GDevelop/Extensions/Physics2Behavior/physics2runtimebehavior.js

gdjs.Physics2SharedData = function(runtimeScene, sharedData) {
  this.gravityX = sharedData.gravityX;
  this.gravityY = sharedData.gravityY;
  this.scaleX =
    sharedData.scaleX === 0 ? 100 : sharedData.scaleX;
  this.scaleY =
    sharedData.scaleY === 0 ? 100 : sharedData.scaleY;

  this.invScaleX = 1 / this.scaleX;
  this.invScaleY = 1 / this.scaleY;
  this.timeStep = 1 / 60;
  this.frameTime = 0;
  this.stepped = false;
  this.timeScale = 1;
  this.world = new Box2D.b2World(
    new Box2D.b2Vec2(this.gravityX, this.gravityY),
    true
  );
  this.staticBody = this.world.CreateBody(new Box2D.b2BodyDef());

  // Contact listener to keep track of current collisions
  this.contactListener = new Box2D.JSContactListener();
  this.contactListener.BeginContact = function(contactPtr) {
    // Get the contact
    var contact = Box2D.wrapPointer(contactPtr, Box2D.b2Contact);
    // There is no body, return
    if (
      contact.GetFixtureA().GetBody() === null ||
      contact.GetFixtureB().GetBody() === null
    ) {
      return;
    }
    // Get associated behaviors
    var behaviorA = contact.GetFixtureA().GetBody().gdjsAssociatedBehavior;
    var behaviorB = contact.GetFixtureB().GetBody().gdjsAssociatedBehavior;
    // Let each behavior know about the contact against the other
    behaviorA.currentContacts.push(behaviorB);
    behaviorB.currentContacts.push(behaviorA);
  };

  this.contactListener.EndContact = function(contactPtr) {
    // Get the contact
    var contact = Box2D.wrapPointer(contactPtr, Box2D.b2Contact);
    // There is no body, return
    if (
      contact.GetFixtureA().GetBody() === null ||
      contact.GetFixtureB().GetBody() === null
    ) {
      return;
    }
    // Get associated behaviors
    var behaviorA = contact.GetFixtureA().GetBody().gdjsAssociatedBehavior;
    var behaviorB = contact.GetFixtureB().GetBody().gdjsAssociatedBehavior;
    // Remove each other contact
    var i = behaviorA.currentContacts.indexOf(behaviorB);
    if (i !== -1) behaviorA.currentContacts.remove(i);
    i = behaviorB.currentContacts.indexOf(behaviorA);
    if (i !== -1) behaviorB.currentContacts.remove(i);
  };

  this.contactListener.PreSolve = function() {};
  this.contactListener.PostSolve = function() {};

  this.world.SetContactListener(this.contactListener);

  this._nextJointId = 1; // Start with 1 so the user is safe from default variables value (0)
  this.joints = {}; // (string)jointId -> (b2Joint)b2Joint
};

gdjs.Physics2SharedData.getSharedData = function(runtimeScene, behaviorName) {
  // Create one if needed
  if (!runtimeScene.physics2SharedData) {
    var initialData = runtimeScene.getInitialSharedDataForBehavior(
      behaviorName
    );
    runtimeScene.physics2SharedData = new gdjs.Physics2SharedData(
      runtimeScene,
      initialData
    );
  }

  return runtimeScene.physics2SharedData;
};

gdjs.Physics2SharedData.prototype.step = function(deltaTime) {
  this.frameTime += deltaTime;
  if (this.frameTime >= this.timeStep) {
    var numberOfSteps = Math.floor(this.frameTime / this.timeStep);
    this.frameTime -= numberOfSteps * this.timeStep;

    if (numberOfSteps > 5) numberOfSteps = 5;

    for (var i = 0; i < numberOfSteps; i++) {
      this.world.Step(this.timeStep * this.timeScale, 8, 10);
    }
    this.world.ClearForces();
  }

  this.stepped = true;
};

gdjs.Physics2SharedData.gdjsCallbackRuntimeSceneUnloaded = function(
  runtimeScene
) {
  if (
    runtimeScene.physics2SharedData &&
    runtimeScene.physics2SharedData.world
  ) {
    Box2D.destroy(runtimeScene.physics2SharedData.world);
  }
};

gdjs.Physics2SharedData.prototype.clearBodyJoints = function(body) {
  // Iterate through all the joints
  for (var jointId in this.joints) {
    if (this.joints.hasOwnProperty(jointId)) {
      // If the joint is attached to the body, delete it
      if (
        this.joints[jointId].GetBodyA() === body ||
        this.joints[jointId].GetBodyB() === body
      ) {
        this.removeJoint(jointId);
      }
    }
  }
};

gdjs.Physics2SharedData.prototype.addJoint = function(joint) {
  // Add the joint to the list
  this.joints[this._nextJointId.toString(10)] = joint;
  // Return the current joint id and then increase it
  return this._nextJointId++;
};

gdjs.Physics2SharedData.prototype.getJoint = function(jointId) {
  // Cast to string
  jointId = jointId.toString(10);
  // Get the joint
  if (this.joints.hasOwnProperty(jointId)) {
    return this.joints[jointId];
  }
  // Joint not found, return null
  return null;
};

gdjs.Physics2SharedData.prototype.getJointId = function(joint) {
  // Search the joint in the list and return the ID
  for (var jointId in this.joints) {
    if (this.joints.hasOwnProperty(jointId)) {
      if (this.joints[jointId] === joint) {
        return parseInt(jointId, 10);
      }
    }
  }
  // Joint not found, return 0
  return 0;
};

gdjs.Physics2SharedData.prototype.removeJoint = function(jointId) {
  // Cast to string
  jointId = jointId.toString(10);
  // Delete the joint
  if (this.joints.hasOwnProperty(jointId)) {
    var joint = this.joints[jointId];
    // If we delete a joint attached to a gear joint, the gear will crash, so we must delete the gear joint first
    // Search in our joints list gear joints attached to this one we want to remove
    // The joint can be attached to a gear joint if it's revolute or prismatic only
    if (
      joint.GetType() === Box2D.e_revoluteJoint ||
      joint.GetType() === Box2D.e_prismaticJoint
    ) {
      for (var jId in this.joints) {
        if (this.joints.hasOwnProperty(jId)) {
          // Must check pointers becuase gears store non-casted joints (b2Joint)
          if (
            this.joints[jId].GetType() === Box2D.e_gearJoint &&
            (Box2D.getPointer(this.joints[jId].GetJoint1()) ===
              Box2D.getPointer(joint) ||
              Box2D.getPointer(this.joints[jId].GetJoint2()) ===
                Box2D.getPointer(joint))
          ) {
            // We could pass it a string, but lets do it right
            this.removeJoint(parseInt(jId, 10));
          }
        }
      }
    }
    // Remove the joint
    this.world.DestroyJoint(joint);
    delete this.joints[jointId];
  }
};

gdjs.Physics2RuntimeBehavior = function(runtimeScene, behaviorData, owner) {
  gdjs.RuntimeBehavior.call(this, runtimeScene, behaviorData, owner);

  this.bodyType = behaviorData.bodyType;
  this.bullet = behaviorData.bullet;
  this.fixedRotation = behaviorData.fixedRotation;
  this.canSleep = behaviorData.canSleep;
  this.shape = behaviorData.shape;
  this.shapeDimensionA = behaviorData.shapeDimensionA;
  this.shapeDimensionB = behaviorData.shapeDimensionB;
  this.shapeOffsetX = behaviorData.shapeOffsetX;
  this.shapeOffsetY = behaviorData.shapeOffsetY;
  this.polygonOrigin = behaviorData.polygonOrigin;
  this.polygon =
    this.shape === 'Polygon'
      ? gdjs.Physics2RuntimeBehavior.getPolygon(behaviorData.vertices)
      : null;
  this.density = behaviorData.density;
  this.friction = behaviorData.friction;
  this.restitution = behaviorData.restitution;
  this.linearDamping = behaviorData.linearDamping;
  this.angularDamping = behaviorData.angularDamping;
  this.gravityScale = behaviorData.gravityScale;
  this.layers = behaviorData.layers;
  this.masks = behaviorData.masks;
  this.shapeScale = 1;
  this.currentContacts = this.currentContacts || [];
  this.currentContacts.length = 0;

  this._body = null;
  this._sharedData = gdjs.Physics2SharedData.getSharedData(
    runtimeScene,
    behaviorData.name
  );
  this._tempb2Vec2 = new Box2D.b2Vec2(); // Avoid creating new vectors all the time
  this._tempb2Vec2Sec = new Box2D.b2Vec2(); // Sometimes two vectors are needed on the same function call
  this._objectOldX = 0;
  this._objectOldY = 0;
  this._objectOldAngle = 0;
  this._objectOldWidth = 0;
  this._objectOldHeight = 0;
  this._verticesBuffer = 0; // Stores a Box2D pointer of created vertices
};

gdjs.Physics2RuntimeBehavior.prototype = Object.create(
  gdjs.RuntimeBehavior.prototype
);
gdjs.Physics2RuntimeBehavior.thisIsARuntimeBehaviorConstructor =
  'Physics2::Physics2Behavior';

gdjs.Physics2RuntimeBehavior.prototype.b2Vec2 = function(x, y) {
  this._tempb2Vec2.set_x(x);
  this._tempb2Vec2.set_y(y);
  return this._tempb2Vec2;
};

gdjs.Physics2RuntimeBehavior.prototype.b2Vec2Sec = function(x, y) {
  this._tempb2Vec2Sec.set_x(x);
  this._tempb2Vec2Sec.set_y(y);
  return this._tempb2Vec2Sec;
};

gdjs.Physics2RuntimeBehavior.prototype.onDeActivate = function() {
  if (this._body !== null) {
    // When a body is deleted, Box2D removes automatically its joints, leaving an invalid pointer in our joints list
    this._sharedData.clearBodyJoints(this._body);
    // Delete the vertices
    if (this._verticesBuffer) {
      Box2D._free(this._verticesBuffer);
      this._verticesBuffer = 0;
    }
    // Delete the body
    this._sharedData.world.DestroyBody(this._body);
    this._body = null;
  }
};

gdjs.Physics2RuntimeBehavior.prototype.onOwnerRemovedFromScene = function() {
  this.onDeActivate();
};

gdjs.Physics2RuntimeBehavior.getPolygon = function(verticesData) {
  if (!verticesData) return null;

  var polygon = new gdjs.Polygon();
  var maxVertices = 8;
  for (
    var i = 0, len = verticesData.length;
    i < Math.min(len, maxVertices);
    i++
  ) {
    polygon.vertices.push([verticesData[i].x, verticesData[i].y]);
  }
  return polygon;
};

gdjs.Physics2RuntimeBehavior.isPolygonConvex = function(polygon) {
  if (!polygon.isConvex()) return false;

  // Check for repeated vertices or check if all vertices are aligned (would crash Box2D)
  var alignedX = true;
  var alignedY = true;
  for (i = 0; i < polygon.vertices.length - 1; ++i) {
    for (var j = i + 1; j < polygon.vertices.length; ++j) {
      if (
        polygon.vertices[i][0] === polygon.vertices[j][0] &&
        polygon.vertices[i][1] === polygon.vertices[j][1]
      )
        return false;
    }
    if (polygon.vertices[i][0] !== polygon.vertices[i + 1][0]) alignedX = false;
    if (polygon.vertices[i][1] !== polygon.vertices[i + 1][1]) alignedY = false;
  }
  if (alignedX || alignedY) return false;

  return true;
};

gdjs.Physics2RuntimeBehavior.prototype.createShape = function() {
  // Get the scaled offset
  var offsetX = this.shapeOffsetX
    ? this.shapeOffsetX * this.shapeScale * this._sharedData.invScaleX
    : 0;
  var offsetY = this.shapeOffsetY
    ? this.shapeOffsetY * this.shapeScale * this._sharedData.invScaleY
    : 0;
  // Generate the base shape
  var shape;
  if (this.shape === 'Circle') {
    shape = new Box2D.b2CircleShape();
    // Radius determined by the custom dimension
    if (this.shapeDimensionA > 0) {
      shape.set_m_radius(
        this.shapeDimensionA * this.shapeScale * this._sharedData.invScaleX
      );
    }
    // Average radius from width and height
    else {
      var radius =
        (this.owner.getWidth() * this._sharedData.invScaleX +
          this.owner.getHeight() * this._sharedData.invScaleY) /
        4;
      shape.set_m_radius(radius > 0 ? radius : 1);
    }
    // Set the offset
    shape.set_m_p(this.b2Vec2(offsetX, offsetY));
  } else if (this.shape === 'Polygon') {
    shape = new Box2D.b2PolygonShape();
    // Not convex, fall back to a box
    if (
      !this.polygon ||
      !gdjs.Physics2RuntimeBehavior.isPolygonConvex(this.polygon)
    ) {
      var width =
        (this.owner.getWidth() > 0 ? this.owner.getWidth() : 1) *
        this._sharedData.invScaleX;
      var height =
        (this.owner.getHeight() > 0 ? this.owner.getHeight() : 1) *
        this._sharedData.invScaleY;
      // Set the shape box
      shape.SetAsBox(width / 2, height / 2, this.b2Vec2(offsetX, offsetY), 0);
    } else {
      var originOffsetX = 0;
      var originOffsetY = 0;
      if (this.polygonOrigin === 'Origin') {
        originOffsetX =
          (this.owner.getWidth() > 0 ? -this.owner.getWidth() / 2 : 0) +
          (this.owner.getX() - this.owner.getDrawableX());
        originOffsetY =
          (this.owner.getHeight() > 0 ? -this.owner.getHeight() / 2 : 0) +
          (this.owner.getY() - this.owner.getDrawableY());
      } else if (this.polygonOrigin === 'TopLeft') {
        originOffsetX =
          this.owner.getWidth() > 0 ? -this.owner.getWidth() / 2 : 0;
        originOffsetY =
          this.owner.getHeight() > 0 ? -this.owner.getHeight() / 2 : 0;
      }
      // Generate vertices if not done already
      if (!this._verticesBuffer) {
        // Store the vertices using a memory allocation function
        var buffer = Box2D._malloc(
          this.polygon.vertices.length * 8,
          'float',
          Box2D.ALLOC_STACK
        );
        this._verticesBuffer = buffer;
      }
      // Overwrite the vertices stored in the buffer
      var offset = 0;
      for (var i = 0, len = this.polygon.vertices.length; i < len; i++) {
        Box2D.HEAPF32[(this._verticesBuffer + offset) >> 2] =
          (this.polygon.vertices[i][0] * this.shapeScale + originOffsetX) *
            this._sharedData.invScaleX +
          offsetX;
        Box2D.HEAPF32[(this._verticesBuffer + (offset + 4)) >> 2] =
          (this.polygon.vertices[i][1] * this.shapeScale + originOffsetY) *
            this._sharedData.invScaleY +
          offsetY;
        offset += 8;
      }
      // Set the shape vertices
      var b2Vertices = Box2D.wrapPointer(this._verticesBuffer, Box2D.b2Vec2);
      shape.Set(b2Vertices, this.polygon.vertices.length);
    }
  } else if (this.shape === 'Edge') {
    shape = new Box2D.b2EdgeShape();
    // Length from the custom dimension or from the object width
    var length =
      (this.shapeDimensionA > 0
        ? this.shapeDimensionA * this.shapeScale
        : this.owner.getWidth() > 0
        ? this.owner.getWidth()
        : 1) * this._sharedData.invScaleX;
    var height =
      this.owner.getHeight() > 0
        ? this.owner.getHeight() * this._sharedData.invScaleY
        : 0;
    // Angle from custom dimension, otherwise is 0
    var angle = this.shapeDimensionB ? gdjs.toRad(this.shapeDimensionB) : 0;
    // Set the edge vertices from the length, the angle and the offset
    shape.Set(
      this.b2Vec2(
        (-length / 2) * Math.cos(angle) + offsetX,
        height / 2 - (length / 2) * Math.sin(angle) + offsetY
      ),
      this.b2Vec2Sec(
        (length / 2) * Math.cos(angle) + offsetX,
        height / 2 + (length / 2) * Math.sin(angle) + offsetY
      )
    );
  } else {
    // Box
    shape = new Box2D.b2PolygonShape();
    // Width and height from custom dimensions or object size
    var width =
      (this.shapeDimensionA > 0
        ? this.shapeDimensionA * this.shapeScale
        : this.owner.getWidth() > 0
        ? this.owner.getWidth()
        : 1) * this._sharedData.invScaleX;
    var height =
      (this.shapeDimensionB > 0
        ? this.shapeDimensionB * this.shapeScale
        : this.owner.getHeight() > 0
        ? this.owner.getHeight()
        : 1) * this._sharedData.invScaleY;
    // Set the shape box, the offset must be added here too
    shape.SetAsBox(width / 2, height / 2, this.b2Vec2(offsetX, offsetY), 0);
  }

  // Generate filter data
  var filter = new Box2D.b2Filter();
  filter.set_categoryBits(this.layers);
  filter.set_maskBits(this.masks);

  // Generate the fixture definition
  var fixDef = new Box2D.b2FixtureDef();

  // Set fixture settings
  fixDef.set_shape(shape);
  fixDef.set_filter(filter);
  if (this.density < 0) this.density = 0;
  fixDef.set_density(this.density);
  if (this.friction < 0) this.friction = 0;
  fixDef.set_friction(this.friction);
  if (this.restitution < 0) this.restitution = 0;
  fixDef.set_restitution(this.restitution);

  // Return the fixture
  return fixDef;
};

gdjs.Physics2RuntimeBehavior.prototype.recreateShape = function() {
  // If there is no body, set a new one
  if (this._body === null) {
    this.createBody();
    return;
  }
  // Destroy the old shape
  this._body.DestroyFixture(this._body.GetFixtureList());
  this._body.CreateFixture(this.createShape());
  // Update cached size
  this._objectOldWidth = this.owner.getWidth();
  this._objectOldHeight = this.owner.getHeight();
};

gdjs.Physics2RuntimeBehavior.prototype.getShapeScale = function() {
  return this.shapeScale;
};

gdjs.Physics2RuntimeBehavior.prototype.setShapeScale = function(shapeScale) {
  if (shapeScale !== this.shapeScale && shapeScale > 0) {
    this.shapeScale = shapeScale;
    this.recreateShape();
  }
};

gdjs.Physics2RuntimeBehavior.prototype.getBody = function() {
  // If there is no body, set a new one
  if (this._body === null) this.createBody();

  return this._body;
};

gdjs.Physics2RuntimeBehavior.prototype.createBody = function() {
  // Generate the body definition
  var bodyDef = new Box2D.b2BodyDef();

  // Set the initial body transformation from the GD object
  bodyDef.set_position(
    this.b2Vec2(
      (this.owner.getDrawableX() + this.owner.getWidth() / 2) *
        this._sharedData.invScaleX,
      (this.owner.getDrawableY() + this.owner.getHeight() / 2) *
        this._sharedData.invScaleY
    )
  );
  bodyDef.set_angle(gdjs.toRad(this.owner.getAngle()));

  // Set body settings
  bodyDef.set_type(
    this.bodyType === 'Static'
      ? Box2D.b2_staticBody
      : this.bodyType === 'Kinematic'
      ? Box2D.b2_kinematicBody
      : Box2D.b2_dynamicBody
  );
  bodyDef.set_bullet(this.bullet);
  bodyDef.set_fixedRotation(this.fixedRotation);
  bodyDef.set_allowSleep(this.canSleep);
  bodyDef.set_linearDamping(this.linearDamping);
  bodyDef.set_angularDamping(this.angularDamping);
  bodyDef.set_gravityScale(this.gravityScale);

  // Create the body
  this._body = this._sharedData.world.CreateBody(bodyDef);
  this._body.CreateFixture(this.createShape());
  this._body.gdjsAssociatedBehavior = this;

  // Update cached size
  this._objectOldWidth = this.owner.getWidth();
  this._objectOldHeight = this.owner.getHeight();
};

gdjs.Physics2RuntimeBehavior.prototype.doStepPreEvents = function(
  runtimeScene
) {
  // Create a body if there is not one
  if (this._body === null) {
    this.createBody();
  }

  // Step the world if not done this frame yet
  if (!this._sharedData.stepped) {
    this._sharedData.step(
      runtimeScene.getTimeManager().getElapsedTime() / 1000.0
    );
  }

  // Copy transform from body to the GD object
  this.owner.setX(
    this._body.GetPosition().get_x() * this._sharedData.scaleX -
      this.owner.getWidth() / 2 +
      this.owner.getX() -
      this.owner.getDrawableX()
  );
  this.owner.setY(
    this._body.GetPosition().get_y() * this._sharedData.scaleY -
      this.owner.getHeight() / 2 +
      this.owner.getY() -
      this.owner.getDrawableY()
  );
  this.owner.setAngle(gdjs.toDegrees(this._body.GetAngle()));

  // Update cached transform
  this._objectOldX = this.owner.getX();
  this._objectOldY = this.owner.getY();
  this._objectOldAngle = this.owner.getAngle();
};

gdjs.Physics2RuntimeBehavior.prototype.doStepPostEvents = function(
  runtimeScene
) {
  // If there is no body, set a new one
  if (this._body === null) this.createBody();

  // GD object size has changed, recreate shape
  // The width has changed and there is no custom dimension A (box: width, circle: radius, edge: length) or
  // The height has changed, the shape is not an edge (edges doesn't have height),
  // it isn't a box with custom height or a circle with custom radius
  if (
    (this._objectOldWidth !== this.owner.getWidth() &&
      this.shapeDimensionA <= 0) ||
    (this._objectOldHeight !== this.owner.getHeight() &&
      this.shape !== 'Edge' &&
      !(this.shape === 'Box' && this.shapeDimensionB > 0) &&
      !(this.shape === 'Ciecle' && this.shapeDimensionA > 0))
  ) {
    this.recreateShape();
  }

  // GD object transform has changed, update body transform
  if (
    this._objectOldX !== this.owner.getX() ||
    this._objectOldY !== this.owner.getY() ||
    this._objectOldAngle !== this.owner.getAngle()
  ) {
    var pos = this.b2Vec2(
      (this.owner.getDrawableX() + this.owner.getWidth() / 2) *
        this._sharedData.invScaleX,
      (this.owner.getDrawableY() + this.owner.getHeight() / 2) *
        this._sharedData.invScaleY
    );
    this._body.SetTransform(pos, gdjs.toRad(this.owner.getAngle()));
    this._body.SetAwake(true);
  }

  // Reset world step to update next frame
  this._sharedData.stepped = false;
};

gdjs.Physics2RuntimeBehavior.prototype.getGravityX = function() {
  return this._sharedData.gravityX;
};

gdjs.Physics2RuntimeBehavior.prototype.getGravityY = function() {
  return this._sharedData.gravityY;
};

gdjs.Physics2RuntimeBehavior.prototype.setGravity = function(x, y) {
  // Check if there is no modification
  if (this._sharedData.gravityX === x && this._sharedData.gravityY === y)
    return;
  // Change the gravity
  this._sharedData.gravityX = x;
  this._sharedData.gravityY = y;
  this._sharedData.world.SetGravity(
    this.b2Vec2(this._sharedData.gravityX, this._sharedData.gravityY)
  );
};

gdjs.Physics2RuntimeBehavior.prototype.getTimeScale = function() {
  // Get the time scale
  return this._sharedData.timeScale;
};

gdjs.Physics2RuntimeBehavior.prototype.setTimeScale = function(timeScale) {
  // Invalid value
  if (timeScale < 0) return;
  // Set the time scale
  this._sharedData.timeScale = timeScale;
};

gdjs.Physics2RuntimeBehavior.setTimeScaleFromObject = function(
  object,
  behaviorName,
  timeScale
) {
  // Check if the object exist and has the behavior
  if (object === null || !object.hasBehavior(behaviorName)) return;
  // Set the time scale
  object.getBehavior(behaviorName).setTimeScale(timeScale);
};

gdjs.Physics2RuntimeBehavior.prototype.isDynamic = function() {
  return this.bodyType === 'Dynamic';
};

gdjs.Physics2RuntimeBehavior.prototype.setDynamic = function() {
  // Check if there is no modification
  if (this.bodyType === 'Dynamic') return;
  // Change body type
  this.bodyType = 'Dynamic';
  // If there is no body, set a new one
  if (this._body === null) {
    this.createBody();
    return;
  }
  // Update body type
  this._body.SetType(Box2D.b2_dynamicBody);
  this._body.SetAwake(true);
};

gdjs.Physics2RuntimeBehavior.prototype.isStatic = function() {
  return this.bodyType === 'Static';
};

gdjs.Physics2RuntimeBehavior.prototype.setStatic = function() {
  // Check if there is no modification
  if (this.bodyType === 'Static') return;
  // Change body type
  this.bodyType = 'Static';
  // If there is no body, set a new one
  if (this._body === null) {
    this.createBody();
    return;
  }
  // Update body type
  this._body.SetType(Box2D.b2_staticBody);
  this._body.SetAwake(true);
};

gdjs.Physics2RuntimeBehavior.prototype.isKinematic = function() {
  return this.bodyType === 'Kinematic';
};

gdjs.Physics2RuntimeBehavior.prototype.setKinematic = function() {
  // Check if there is no modification
  if (this.bodyType === 'Kinematic') return;
  // Change body type
  this.bodyType = 'Kinematic';
  // If there is no body, set a new one
  if (this._body === null) {
    this.createBody();
    return;
  }
  // Update body type
  this._body.SetType(Box2D.b2_kinematicBody);
  this._body.SetAwake(true);
};

gdjs.Physics2RuntimeBehavior.prototype.isBullet = function() {
  return this.bullet;
};

gdjs.Physics2RuntimeBehavior.prototype.setBullet = function(enable) {
  // Check if there is no modification
  if (this.bullet === enable) return;
  // Change bullet flag
  this.bullet = enable;
  // If there is no body, set a new one
  if (this._body === null) {
    this.createBody();
    return;
  }
  // Update body bullet flag
  this._body.SetBullet(this.bullet);
};

gdjs.Physics2RuntimeBehavior.prototype.hasFixedRotation = function() {
  return this.fixedRotation;
};

gdjs.Physics2RuntimeBehavior.prototype.setFixedRotation = function(enable) {
  this.fixedRotation = enable;

  if (this._body === null) {
    this.createBody();
    return;
  }
  this._body.SetFixedRotation(this.fixedRotation);
};

gdjs.Physics2RuntimeBehavior.prototype.isSleepingAllowed = function() {
  return this.canSleep;
};

gdjs.Physics2RuntimeBehavior.prototype.setSleepingAllowed = function(enable) {
  this.canSleep = enable;

  if (this._body === null) {
    this.createBody();
    return;
  }
  this._body.SetSleepingAllowed(this.canSleep);
};

gdjs.Physics2RuntimeBehavior.prototype.isSleeping = function() {
  // If there is no body, set a new one
  if (this._body === null) {
    this.createBody();
  }
  // Get the body sleeping state
  return !this._body.IsAwake();
};

gdjs.Physics2RuntimeBehavior.prototype.getDensity = function() {
  return this.density;
};

gdjs.Physics2RuntimeBehavior.prototype.setDensity = function(density) {
  // Non-negative values only
  if (density < 0) density = 0;
  // Check if there is no modification
  if (this.density === density) return;
  // Change density
  this.density = density;
  // If there is no body, set a new one
  if (this._body === null) {
    this.createBody();
    return;
  }
  // Update the body density
  this._body.GetFixtureList().SetDensity(this.density);
  this._body.ResetMassData();
};

gdjs.Physics2RuntimeBehavior.prototype.getFriction = function() {
  return this.friction;
};

gdjs.Physics2RuntimeBehavior.prototype.setFriction = function(friction) {
  // Non-negative values only
  if (friction < 0) friction = 0;
  // Check if there is no modification
  if (this.friction === friction) return;
  // Change friction
  this.friction = friction;
  // If there is no body, set a new one
  if (this._body === null) {
    this.createBody();
    return;
  }
  // Update the body friction
  this._body.GetFixtureList().SetFriction(this.friction);
  // Update contacts
  var contact = this._body.GetContactList();
  while (Box2D.getPointer(contact)) {
    contact.get_contact().ResetFriction();
    contact = contact.get_next();
  }
};

gdjs.Physics2RuntimeBehavior.prototype.getRestitution = function() {
  return this.restitution;
};

gdjs.Physics2RuntimeBehavior.prototype.setRestitution = function(restitution) {
  // Non-negative values only
  if (restitution < 0) restitution = 0;
  // Check if there is no modification
  if (this.restitution === restitution) return;
  // Change restitution
  this.restitution = restitution;
  // If there is no body, set a new one
  if (this._body === null) {
    this.createBody();
    return;
  }
  // Update the body restitution
  this._body.GetFixtureList().SetRestitution(this.restitution);
  // Update contacts
  var contact = this._body.GetContactList();
  while (Box2D.getPointer(contact)) {
    contact.get_contact().ResetRestitution();
    contact = contact.get_next();
  }
};

gdjs.Physics2RuntimeBehavior.prototype.getLinearDamping = function() {
  return this.linearDamping;
};

gdjs.Physics2RuntimeBehavior.prototype.setLinearDamping = function(
  linearDamping
) {
  // Check if there is no modification
  if (this.linearDamping === linearDamping) return;
  // Change linearDamping
  this.linearDamping = linearDamping;
  // If there is no body, set a new one
  if (this._body === null) {
    this.createBody();
    return;
  }
  // Update the body linear damping
  this._body.SetLinearDamping(this.linearDamping);
};

gdjs.Physics2RuntimeBehavior.prototype.getAngularDamping = function() {
  return this.angularDamping;
};

gdjs.Physics2RuntimeBehavior.prototype.setAngularDamping = function(
  angularDamping
) {
  // Check if there is no modification
  if (this.angularDamping === angularDamping) return;
  // Change angularDamping
  this.angularDamping = angularDamping;
  // If there is no body, set a new one
  if (this._body === null) {
    this.createBody();
    return;
  }
  // Update the body angular damping
  this._body.SetAngularDamping(this.angularDamping);
};

gdjs.Physics2RuntimeBehavior.prototype.getGravityScale = function() {
  return this.gravityScale;
};

gdjs.Physics2RuntimeBehavior.prototype.setGravityScale = function(
  gravityScale
) {
  // Check if there is no modification
  if (this.gravityScale === gravityScale) return;
  // Change the gravity scale
  this.gravityScale = gravityScale;
  // If there is no body, set a new one
  if (this._body === null) {
    this.createBody();
    return;
  }
  // Update the body gravity scale
  this._body.SetGravityScale(this.gravityScale);
};

gdjs.Physics2RuntimeBehavior.prototype.layerEnabled = function(layer) {
  // Layer must be an integer
  layer = Math.floor(layer);
  // Layer must be in range [1, 16]
  if (layer < 1 || layer > 16) return false;

  return !!(this.layers & (1 << (layer - 1)));
};

gdjs.Physics2RuntimeBehavior.prototype.enableLayer = function(layer, enable) {
  // Layer must be an integer
  layer = Math.floor(layer);
  // Layer must be in range [1, 16]
  if (layer < 1 || layer > 16) return;
  // Change the layers
  if (enable) {
    this.layers |= 1 << (layer - 1);
  } else {
    this.layers &= ~(1 << (layer - 1));
  }
  // If there is no body, set a new one
  if (this._body === null) {
    this.createBody();
    return;
  }
  // Update the body layers
  var filter = this._body.GetFixtureList().GetFilterData();
  filter.set_categoryBits(this.layers);
  this._body.GetFixtureList().SetFilterData(filter);
};

gdjs.Physics2RuntimeBehavior.prototype.maskEnabled = function(mask) {
  // Mask must be an integer
  mask = Math.floor(mask);
  // Mask must be in range [1, 16]
  if (mask < 1 || mask > 16) return false;

  return !!(this.masks & (1 << (mask - 1)));
};

gdjs.Physics2RuntimeBehavior.prototype.enableMask = function(mask, enable) {
  // Mask must be an integer
  mask = Math.floor(mask);
  // Mask must be in range [1, 16]
  if (mask < 1 || mask > 16) return;
  // Change the masks
  if (enable) {
    this.masks |= 1 << (mask - 1);
  } else {
    this.masks &= ~(1 << (mask - 1));
  }
  // If there is no body, set a new one
  if (this._body === null) {
    this.createBody();
    return;
  }
  // Update the body masks
  var filter = this._body.GetFixtureList().GetFilterData();
  filter.set_maskBits(this.masks);
  this._body.GetFixtureList().SetFilterData(filter);
};

gdjs.Physics2RuntimeBehavior.prototype.getLinearVelocityX = function() {
  // If there is no body, set a new one
  if (this._body === null) {
    this.createBody();
    return 0;
  }
  // Get the linear velocity on X
  return this._body.GetLinearVelocity().get_x() * this._sharedData.scaleX;
};

gdjs.Physics2RuntimeBehavior.prototype.setLinearVelocityX = function(
  linearVelocityX
) {
  // If there is no body, set a new one
  if (this._body === null) this.createBody();
  // Set the linear velocity on X
  this._body.SetLinearVelocity(
    this.b2Vec2(
      linearVelocityX * this._sharedData.invScaleX,
      this._body.GetLinearVelocity().get_y()
    )
  );
};

gdjs.Physics2RuntimeBehavior.prototype.getLinearVelocityY = function() {
  // If there is no body, set a new one
  if (this._body === null) {
    this.createBody();
    return 0;
  }
  // Get the linear velocity on Y
  return this._body.GetLinearVelocity().get_y() * this._sharedData.scaleY;
};

gdjs.Physics2RuntimeBehavior.prototype.setLinearVelocityY = function(
  linearVelocityY
) {
  // If there is no body, set a new one
  if (this._body === null) this.createBody();
  // Set the linear velocity on Y
  this._body.SetLinearVelocity(
    this.b2Vec2(
      this._body.GetLinearVelocity().get_x(),
      linearVelocityY * this._sharedData.invScaleY
    )
  );
};

gdjs.Physics2RuntimeBehavior.prototype.getLinearVelocityLength = function() {
  // If there is no body, set a new one
  if (this._body === null) {
    this.createBody();
    return 0;
  }
  // Get the linear velocity length
  return this.b2Vec2(
    this._body.GetLinearVelocity().get_x() * this._sharedData.scaleX,
    this._body.GetLinearVelocity().get_y() * this._sharedData.scaleY
  ).Length();
};

gdjs.Physics2RuntimeBehavior.prototype.getAngularVelocity = function() {
  // If there is no body, set a new one
  if (this._body === null) this.createBody();
  // Get the angular velocity
  return gdjs.toDegrees(this._body.GetAngularVelocity());
};

gdjs.Physics2RuntimeBehavior.prototype.setAngularVelocity = function(
  angularVelocity
) {
  // If there is no body, set a new one
  if (this._body === null) this.createBody();
  // Set the angular velocity
  this._body.SetAngularVelocity(gdjs.toRad(angularVelocity));
};

gdjs.Physics2RuntimeBehavior.prototype.applyForce = function(
  forceX,
  forceY,
  positionX,
  positionY
) {
  // If there is no body, set a new one
  if (this._body === null) this.createBody();
  // Wake up the object
  this._body.SetAwake(true);
  // Apply the force
  this._body.ApplyForce(
    this.b2Vec2(forceX, forceY),
    this.b2Vec2Sec(
      positionX * this._sharedData.invScaleX,
      positionY * this._sharedData.invScaleY
    )
  );
};

gdjs.Physics2RuntimeBehavior.prototype.applyPolarForce = function(
  angle,
  length,
  positionX,
  positionY
) {
  // If there is no body, set a new one
  if (this._body === null) this.createBody();
  // Wake up the object
  this._body.SetAwake(true);
  // Apply the force
  angle = gdjs.toRad(angle);
  this._body.ApplyForce(
    this.b2Vec2(length * Math.cos(angle), length * Math.sin(angle)),
    this.b2Vec2Sec(
      positionX * this._sharedData.invScaleX,
      positionY * this._sharedData.invScaleY
    )
  );
};

gdjs.Physics2RuntimeBehavior.prototype.applyForceTowardPosition = function(
  length,
  towardX,
  towardY,
  positionX,
  positionY
) {
  // If there is no body, set a new one
  if (this._body === null) this.createBody();
  // Wake up the object
  this._body.SetAwake(true);
  // Apply the force
  var angle = Math.atan2(
    towardY * this._sharedData.invScaleY - this._body.GetPosition().get_y(),
    towardX * this._sharedData.invScaleX - this._body.GetPosition().get_x()
  );
  this._body.ApplyForce(
    this.b2Vec2(length * Math.cos(angle), length * Math.sin(angle)),
    this.b2Vec2Sec(
      positionX * this._sharedData.invScaleX,
      positionY * this._sharedData.invScaleY
    )
  );
};

gdjs.Physics2RuntimeBehavior.prototype.applyImpulse = function(
  impulseX,
  impulseY,
  positionX,
  positionY
) {
  // If there is no body, set a new one
  if (this._body === null) this.createBody();
  // Wake up the object
  this._body.SetAwake(true);
  // Apply the impulse
  this._body.ApplyLinearImpulse(
    this.b2Vec2(impulseX, impulseY),
    this.b2Vec2Sec(
      positionX * this._sharedData.invScaleX,
      positionY * this._sharedData.invScaleY
    )
  );
};

gdjs.Physics2RuntimeBehavior.prototype.applyPolarImpulse = function(
  angle,
  length,
  positionX,
  positionY
) {
  // If there is no body, set a new one
  if (this._body === null) his.createBody();
  // Wake up the object
  this._body.SetAwake(true);
  // Apply the impulse
  angle = gdjs.toRad(angle);
  this._body.ApplyLinearImpulse(
    this.b2Vec2(length * Math.cos(angle), length * Math.sin(angle)),
    this.b2Vec2Sec(
      positionX * this._sharedData.invScaleX,
      positionY * this._sharedData.invScaleY
    )
  );
};

gdjs.Physics2RuntimeBehavior.prototype.applyImpulseTowardPosition = function(
  length,
  towardX,
  towardY,
  positionX,
  positionY
) {
  // If there is no body, set a new one
  if (this._body === null) this.createBody();
  // Wake up the object
  this._body.SetAwake(true);
  // Apply the impulse
  var angle = Math.atan2(
    towardY * this._sharedData.invScaleY - this._body.GetPosition().get_y(),
    towardX * this._sharedData.invScaleX - this._body.GetPosition().get_x()
  );
  this._body.ApplyLinearImpulse(
    this.b2Vec2(length * Math.cos(angle), length * Math.sin(angle)),
    this.b2Vec2Sec(
      positionX * this._sharedData.invScaleX,
      positionY * this._sharedData.invScaleY
    )
  );
};

gdjs.Physics2RuntimeBehavior.prototype.applyTorque = function(torque) {
  // If there is no body, set a new one
  if (this._body === null) this.createBody();
  // Wake up the object
  this._body.SetAwake(true);
  // Apply the torque
  this._body.ApplyTorque(torque);
};

gdjs.Physics2RuntimeBehavior.prototype.applyAngularImpulse = function(
  angularImpulse
) {
  // If there is no body, set a new one
  if (this._body === null) this.createBody();
  // Wake up the object
  this._body.SetAwake(true);
  // Apply the angular impulse
  this._body.ApplyAngularImpulse(angularImpulse);
};

gdjs.Physics2RuntimeBehavior.prototype.getMassCenterX = function() {
  // If there is no body, set a new one
  if (this._body === null) {
    this.createBody();
  }
  // Get the mass center on X
  return this._body.GetWorldCenter().get_x() * this._sharedData.scaleX;
};

gdjs.Physics2RuntimeBehavior.prototype.getMassCenterY = function() {
  // If there is no body, set a new one
  if (this._body === null) {
    this.createBody();
  }
  // Get the mass center on Y
  return this._body.GetWorldCenter().get_y() * this._sharedData.scaleY;
};

// Joints
gdjs.Physics2RuntimeBehavior.prototype.isJointFirstObject = function(jointId) {
  // If there is no body, set a new one
  if (this._body === null) {
    this.createBody();
    return false;
  }
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found
  if (joint === null) return false;
  // Check the joint object
  return joint.GetBodyA() === this._body;
};

gdjs.Physics2RuntimeBehavior.prototype.isJointSecondObject = function(jointId) {
  // If there is no body, set a new one
  if (this._body === null) {
    this.createBody();
    return false;
  }
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found
  if (joint === null) return false;
  // Check the joint object
  return joint.GetBodyB() === this._body;
};

gdjs.Physics2RuntimeBehavior.prototype.getJointFirstAnchorX = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found
  if (joint === null) return 0;
  // Get the joint anchor
  return joint
    .GetBodyA()
    .GetWorldPoint(joint.GetLocalAnchorA())
    .get_x();
};

gdjs.Physics2RuntimeBehavior.prototype.getJointFirstAnchorY = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found
  if (joint === null) return 0;
  // Get the joint anchor
  return joint
    .GetBodyA()
    .GetWorldPoint(joint.GetLocalAnchorA())
    .get_y();
};

gdjs.Physics2RuntimeBehavior.prototype.getJointSecondAnchorX = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found
  if (joint === null) return 0;
  // Get the joint anchor
  return joint
    .GetBodyB()
    .GetWorldPoint(joint.GetLocalAnchorB())
    .get_x();
};

gdjs.Physics2RuntimeBehavior.prototype.getJointSecondAnchorY = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found
  if (joint === null) return 0;
  // Get the joint anchor
  return joint
    .GetBodyB()
    .GetWorldPoint(joint.GetLocalAnchorB())
    .get_y();
};

gdjs.Physics2RuntimeBehavior.prototype.getJointReactionForce = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found
  if (joint === null) return 0;
  // Get the reaction force
  return joint.GetReactionForce(1 / this._sharedData.timeStep).Length();
};

gdjs.Physics2RuntimeBehavior.prototype.getJointReactionTorque = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found
  if (joint === null) return 0;
  // Get the reaction torque
  return joint.GetReactionTorque(1 / this._sharedData.timeStep);
};

gdjs.Physics2RuntimeBehavior.prototype.removeJoint = function(jointId) {
  // Just let the sharedData to manage and delete the joint
  this._sharedData.removeJoint(jointId);
};

// Distance joint
gdjs.Physics2RuntimeBehavior.prototype.addDistanceJoint = function(
  x1,
  y1,
  other,
  x2,
  y2,
  length,
  frequency,
  dampingRatio,
  collideConnected,
  variable
) {
  // If there is no body, set a new one
  if (this._body === null) this.createBody();
  // If there is no second object or it doesn't share the behavior, return
  if (other == null || !other.hasBehavior(this.name)) return;
  // Get the second body
  var otherBody = other.getBehavior(this.name).getBody();
  // If the first and second objects/bodies are the same, return
  if (this._body === otherBody) return;
  // Set joint settings
  var jointDef = new Box2D.b2DistanceJointDef();
  jointDef.set_bodyA(this._body);
  jointDef.set_localAnchorA(
    this._body.GetLocalPoint(
      this.b2Vec2(
        x1 * this._sharedData.invScaleX,
        y1 * this._sharedData.invScaleY
      )
    )
  );
  jointDef.set_bodyB(otherBody);
  jointDef.set_localAnchorB(
    otherBody.GetLocalPoint(
      this.b2Vec2(
        x2 * this._sharedData.invScaleX,
        y2 * this._sharedData.invScaleY
      )
    )
  );
  jointDef.set_length(
    length > 0
      ? length * this._sharedData.invScaleX
      : this.b2Vec2(
          (x2 - x1) * this._sharedData.invScaleX,
          (y2 - y1) * this._sharedData.invScaleY
        ).Length()
  );
  jointDef.set_frequencyHz(frequency >= 0 ? frequency : 0);
  jointDef.set_dampingRatio(dampingRatio >= 0 ? dampingRatio : 1);
  jointDef.set_collideConnected(collideConnected);
  // Create the joint and get the id
  var jointId = this._sharedData.addJoint(
    Box2D.castObject(
      this._sharedData.world.CreateJoint(jointDef),
      Box2D.b2DistanceJoint
    )
  );
  // Store the id in the variable
  variable.setNumber(jointId);
};

gdjs.Physics2RuntimeBehavior.prototype.getDistanceJointLength = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_distanceJoint) return 0;
  // Get the joint length
  return joint.GetLength() * this._sharedData.scaleX;
};

gdjs.Physics2RuntimeBehavior.prototype.setDistanceJointLength = function(
  jointId,
  length
) {
  // Invalid value
  if (length <= 0) return;
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_distanceJoint) return;
  // Set the joint length
  joint.SetLength(length * this._sharedData.invScaleX);
  // Awake the bodies
  joint.GetBodyA().SetAwake(true);
  joint.GetBodyB().SetAwake(true);
};

gdjs.Physics2RuntimeBehavior.prototype.getDistanceJointFrequency = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_distanceJoint) return 0;
  // Get the joint frequency
  return joint.GetFrequency();
};

gdjs.Physics2RuntimeBehavior.prototype.setDistanceJointFrequency = function(
  jointId,
  frequency
) {
  // Invalid value
  if (frequency < 0) return;
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_distanceJoint) return;
  // Set the joint frequency
  joint.SetFrequency(frequency);
};

gdjs.Physics2RuntimeBehavior.prototype.getDistanceJointDampingRatio = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_distanceJoint) return 0;
  // Get the joint damping ratio
  return joint.GetDampingRatio();
};

gdjs.Physics2RuntimeBehavior.prototype.setDistanceJointDampingRatio = function(
  jointId,
  dampingRatio
) {
  // Invalid value
  if (dampingRatio < 0) return;
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_distanceJoint);
  // Set the joint damping ratio
  joint.SetDampingRatio(dampingRatio);
};

// Revolute joint
gdjs.Physics2RuntimeBehavior.prototype.addRevoluteJoint = function(
  x,
  y,
  enableLimit,
  referenceAngle,
  lowerAngle,
  upperAngle,
  enableMotor,
  motorSpeed,
  maxMotorTorque,
  variable
) {
  // If there is no body, set a new one
  if (this._body === null) this.createBody();
  // Set joint settings
  var jointDef = new Box2D.b2RevoluteJointDef();
  jointDef.set_bodyA(this._sharedData.staticBody);
  jointDef.set_localAnchorA(
    this._sharedData.staticBody.GetLocalPoint(
      this.b2Vec2(
        x * this._sharedData.invScaleX,
        y * this._sharedData.invScaleY
      )
    )
  );
  jointDef.set_bodyB(this._body);
  jointDef.set_localAnchorB(
    this._body.GetLocalPoint(
      this.b2Vec2(
        x * this._sharedData.invScaleX,
        y * this._sharedData.invScaleY
      )
    )
  );
  jointDef.set_enableLimit(enableLimit);
  jointDef.set_referenceAngle(gdjs.toRad(referenceAngle));
  // Lower angle must be lower than upper angle
  if (upperAngle < lowerAngle) {
    var temp = lowerAngle;
    lowerAngle = upperAngle;
    upperAngle = temp;
  }
  jointDef.set_lowerAngle(gdjs.toRad(lowerAngle));
  jointDef.set_upperAngle(gdjs.toRad(upperAngle));
  jointDef.set_enableMotor(enableMotor);
  jointDef.set_motorSpeed(gdjs.toRad(motorSpeed));
  jointDef.set_maxMotorTorque(maxMotorTorque >= 0 ? maxMotorTorque : 0);
  jointDef.set_collideConnected(false);
  // Create the joint and get the id
  var jointId = this._sharedData.addJoint(
    Box2D.castObject(
      this._sharedData.world.CreateJoint(jointDef),
      Box2D.b2RevoluteJoint
    )
  );
  // Store the id in the variable
  variable.setNumber(jointId);
};

gdjs.Physics2RuntimeBehavior.prototype.addRevoluteJointBetweenTwoBodies = function(
  x1,
  y1,
  other,
  x2,
  y2,
  enableLimit,
  referenceAngle,
  lowerAngle,
  upperAngle,
  enableMotor,
  motorSpeed,
  maxMotorTorque,
  collideConnected,
  variable
) {
  // If there is no body, set a new one
  if (this._body === null) this.createBody();
  // If there is no second object or it doesn't share the behavior, return
  if (other == null || !other.hasBehavior(this.name)) return;
  // Get the second body
  var otherBody = other.getBehavior(this.name).getBody();
  // If the first and second objects/bodies are the same, return
  if (this._body === otherBody) return;
  // Set joint settings
  var jointDef = new Box2D.b2RevoluteJointDef();
  jointDef.set_bodyA(this._body);
  jointDef.set_localAnchorA(
    this._body.GetLocalPoint(
      this.b2Vec2(
        x1 * this._sharedData.invScaleX,
        y1 * this._sharedData.invScaleY
      )
    )
  );
  jointDef.set_bodyB(otherBody);
  jointDef.set_localAnchorB(
    otherBody.GetLocalPoint(
      this.b2Vec2(
        x2 * this._sharedData.invScaleX,
        y2 * this._sharedData.invScaleY
      )
    )
  );
  jointDef.set_enableLimit(enableLimit);
  jointDef.set_referenceAngle(gdjs.toRad(referenceAngle));
  // Lower angle must be lower than upper angle
  if (upperAngle < lowerAngle) {
    var temp = lowerAngle;
    lowerAngle = upperAngle;
    upperAngle = temp;
  }
  jointDef.set_lowerAngle(gdjs.toRad(lowerAngle));
  jointDef.set_upperAngle(gdjs.toRad(upperAngle));
  jointDef.set_enableMotor(enableMotor);
  jointDef.set_motorSpeed(gdjs.toRad(motorSpeed));
  jointDef.set_maxMotorTorque(maxMotorTorque >= 0 ? maxMotorTorque : 0);
  jointDef.set_collideConnected(collideConnected);
  // Create the joint and get the id
  var jointId = this._sharedData.addJoint(
    Box2D.castObject(
      this._sharedData.world.CreateJoint(jointDef),
      Box2D.b2RevoluteJoint
    )
  );
  // Store the id in the variable
  variable.setNumber(jointId);
};

gdjs.Physics2RuntimeBehavior.prototype.getRevoluteJointReferenceAngle = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_revoluteJoint) return 0;
  // Get the joint reference angle
  return gdjs.toDegrees(joint.GetReferenceAngle());
};

gdjs.Physics2RuntimeBehavior.prototype.getRevoluteJointAngle = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_revoluteJoint) return 0;
  // Get the joint current angle
  return gdjs.toDegrees(joint.GetJointAngle());
};

gdjs.Physics2RuntimeBehavior.prototype.getRevoluteJointSpeed = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_revoluteJoint) return 0;
  // Get the joint angular speed
  return gdjs.toDegrees(joint.GetJointSpeed());
};

gdjs.Physics2RuntimeBehavior.prototype.isRevoluteJointLimitsEnabled = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_revoluteJoint) return false;
  // Get the joint limits state
  return joint.IsLimitEnabled();
};

gdjs.Physics2RuntimeBehavior.prototype.enableRevoluteJointLimits = function(
  jointId,
  enable
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_revoluteJoint) return;
  // Set the joint limits state
  joint.EnableLimit(enable);
};

gdjs.Physics2RuntimeBehavior.prototype.getRevoluteJointMinAngle = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_revoluteJoint) return 0;
  // Get the joint lower angle
  return gdjs.toDegrees(joint.GetLowerLimit());
};

gdjs.Physics2RuntimeBehavior.prototype.getRevoluteJointMaxAngle = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_revoluteJoint) return 0;
  // Get the joint upper angle
  return gdjs.toDegrees(joint.GetUpperLimit());
};

gdjs.Physics2RuntimeBehavior.prototype.setRevoluteJointLimits = function(
  jointId,
  lowerAngle,
  upperAngle
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_revoluteJoint) return;
  // Lower angle must be lower than upper angle
  if (upperAngle < lowerAngle) {
    var temp = lowerAngle;
    lowerAngle = upperAngle;
    upperAngle = temp;
  }
  // Set the joint limits
  joint.SetLimits(gdjs.toRad(lowerAngle), gdjs.toRad(upperAngle));
};

gdjs.Physics2RuntimeBehavior.prototype.isRevoluteJointMotorEnabled = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_revoluteJoint) return false;
  // Get the joint motor state
  return joint.IsMotorEnabled();
};

gdjs.Physics2RuntimeBehavior.prototype.enableRevoluteJointMotor = function(
  jointId,
  enable
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_revoluteJoint) return;
  // Set the joint motor state
  joint.EnableMotor(enable);
};

gdjs.Physics2RuntimeBehavior.prototype.getRevoluteJointMotorSpeed = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_revoluteJoint) return 0;
  // Get the joint motor speed
  return gdjs.toDegrees(joint.GetMotorSpeed());
};

gdjs.Physics2RuntimeBehavior.prototype.setRevoluteJointMotorSpeed = function(
  jointId,
  speed
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_revoluteJoint) return;
  // Set the joint motor speed
  joint.SetMotorSpeed(gdjs.toRad(speed));
};

gdjs.Physics2RuntimeBehavior.prototype.getRevoluteJointMaxMotorTorque = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_revoluteJoint) return 0;
  // Get the joint max motor
  return joint.GetMaxMotorTorque();
};

gdjs.Physics2RuntimeBehavior.prototype.setRevoluteJointMaxMotorTorque = function(
  jointId,
  maxTorque
) {
  // Invalid value
  if (maxTorque < 0) return;
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_revoluteJoint) return;
  // Set the joint max motor
  joint.SetMaxMotorTorque(maxTorque);
};

gdjs.Physics2RuntimeBehavior.prototype.getRevoluteJointMotorTorque = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_revoluteJoint) return 0;
  // Get the joint motor torque
  return joint.GetMotorTorque(1 / this._sharedData.timeStep);
};

// Prismatic joint
gdjs.Physics2RuntimeBehavior.prototype.addPrismaticJoint = function(
  x1,
  y1,
  other,
  x2,
  y2,
  axisAngle,
  referenceAngle,
  enableLimit,
  lowerTranslation,
  upperTranslation,
  enableMotor,
  motorSpeed,
  maxMotorForce,
  collideConnected,
  variable
) {
  // If there is no body, set a new one
  if (this._body === null) this.createBody();
  // If there is no second object or it doesn't share the behavior, return
  if (other == null || !other.hasBehavior(this.name)) return;
  // Get the second body
  var otherBody = other.getBehavior(this.name).getBody();
  // If the first and second objects/bodies are the same, return
  if (this._body === otherBody) return;
  // Set joint settings
  var jointDef = new Box2D.b2PrismaticJointDef();
  jointDef.set_bodyA(this._body);
  jointDef.set_localAnchorA(
    this._body.GetLocalPoint(
      this.b2Vec2(
        x1 * this._sharedData.invScaleX,
        y1 * this._sharedData.invScaleY
      )
    )
  );
  jointDef.set_bodyB(otherBody);
  jointDef.set_localAnchorB(
    otherBody.GetLocalPoint(
      this.b2Vec2(
        x2 * this._sharedData.invScaleX,
        y2 * this._sharedData.invScaleY
      )
    )
  );
  axisAngle = gdjs.toRad(axisAngle) - this._body.GetAngle();
  jointDef.set_localAxisA(
    this.b2Vec2(Math.cos(axisAngle), Math.sin(axisAngle))
  );
  jointDef.set_referenceAngle(gdjs.toRad(referenceAngle));
  jointDef.set_enableLimit(enableLimit);
  // Lower translation must be lower than upper translation
  if (upperTranslation < lowerTranslation) {
    var temp = lowerTranslation;
    lowerTranslation = upperTranslation;
    upperTranslation = temp;
  }
  // The translation range must include zero
  jointDef.set_lowerTranslation(
    lowerTranslation < 0 ? lowerTranslation * this._sharedData.invScaleX : 0
  );
  jointDef.set_upperTranslation(
    upperTranslation > 0 ? upperTranslation * this._sharedData.invScaleX : 0
  );
  jointDef.set_enableMotor(enableMotor);
  jointDef.set_motorSpeed(motorSpeed * this._sharedData.invScaleX);
  jointDef.set_maxMotorForce(maxMotorForce);
  jointDef.set_collideConnected(collideConnected);
  // Create the joint and get the id
  var jointId = this._sharedData.addJoint(
    Box2D.castObject(
      this._sharedData.world.CreateJoint(jointDef),
      Box2D.b2PrismaticJoint
    )
  );
  // Store the id in the variable
  variable.setNumber(jointId);
};

gdjs.Physics2RuntimeBehavior.prototype.getPrismaticJointAxisAngle = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_prismaticJoint) return 0;
  // Get the joint axis angle
  return gdjs.toDegrees(
    Math.atan2(joint.GetLocalAxisA().get_y(), joint.GetLocalAxisA().get_x()) +
      joint.GetBodyA().GetAngle()
  );
};

gdjs.Physics2RuntimeBehavior.prototype.getPrismaticJointReferenceAngle = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_prismaticJoint) return 0;
  // Get the joint reference angle
  return gdjs.toDegrees(joint.GetReferenceAngle());
};

gdjs.Physics2RuntimeBehavior.prototype.getPrismaticJointTranslation = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_prismaticJoint) return 0;
  // Get the joint current translation
  return joint.GetJointTranslation() * this._sharedData.scaleX;
};

gdjs.Physics2RuntimeBehavior.prototype.getPrismaticJointSpeed = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_prismaticJoint) return 0;
  // Get the joint speed
  return joint.GetJointSpeed() * this._sharedData.scaleX;
};

gdjs.Physics2RuntimeBehavior.prototype.isPrismaticJointLimitsEnabled = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_prismaticJoint)
    return false;
  // Get the joint limits state
  return joint.IsLimitEnabled();
};

gdjs.Physics2RuntimeBehavior.prototype.enablePrismaticJointLimits = function(
  jointId,
  enable
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_prismaticJoint) return;
  // Set the joint limits state
  joint.EnableLimit(enable);
};

gdjs.Physics2RuntimeBehavior.prototype.getPrismaticJointMinTranslation = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_prismaticJoint) return 0;
  // Get the joint lower limit
  return joint.GetLowerLimit() * this._sharedData.scaleX;
};

gdjs.Physics2RuntimeBehavior.prototype.getPrismaticJointMaxTranslation = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_prismaticJoint) return 0;
  // Get the joint upper angle
  return joint.GetUpperLimit() * this._sharedData.scaleX;
};

gdjs.Physics2RuntimeBehavior.prototype.setPrismaticJointLimits = function(
  jointId,
  lowerTranslation,
  upperTranslation
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_prismaticJoint) return;
  // Lower translation must be lower than upper translation
  if (upperTranslation < lowerTranslation) {
    var temp = lowerTranslation;
    lowerTranslation = upperTranslation;
    upperTranslation = temp;
  }
  // The translation range must include zero
  lowerTranslation = lowerTranslation < 0 ? lowerTranslation : 0;
  upperTranslation = upperTranslation > 0 ? upperTranslation : 0;
  // Set the joint limits
  joint.SetLimits(
    lowerTranslation * this._sharedData.invScaleX,
    upperTranslation * this._sharedData.invScaleX
  );
};

gdjs.Physics2RuntimeBehavior.prototype.isPrismaticJointMotorEnabled = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_prismaticJoint)
    return false;
  // Get the joint motor state
  return joint.IsMotorEnabled();
};

gdjs.Physics2RuntimeBehavior.prototype.enablePrismaticJointMotor = function(
  jointId,
  enable
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_prismaticJoint) return;
  // Set the joint motor state
  joint.EnableMotor(enable);
};

gdjs.Physics2RuntimeBehavior.prototype.getPrismaticJointMotorSpeed = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_prismaticJoint) return 0;
  // Get the joint motor speed
  return joint.GetMotorSpeed() * this._sharedData.scaleX;
};

gdjs.Physics2RuntimeBehavior.prototype.setPrismaticJointMotorSpeed = function(
  jointId,
  speed
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_prismaticJoint) return;
  // Set the joint motor speed
  joint.SetMotorSpeed(speed * this._sharedData.invScaleX);
};

gdjs.Physics2RuntimeBehavior.prototype.getPrismaticJointMaxMotorForce = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_prismaticJoint) return 0;
  // Get the joint max motor force
  return joint.GetMaxMotorForce();
};

gdjs.Physics2RuntimeBehavior.prototype.setPrismaticJointMaxMotorForce = function(
  jointId,
  maxForce
) {
  // Invalid value
  if (maxForce < 0) return;
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_prismaticJoint) return;
  // Set the joint max motor force
  joint.SetMaxMotorForce(maxForce);
};

gdjs.Physics2RuntimeBehavior.prototype.getPrismaticJointMotorForce = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_prismaticJoint) return 0;
  // Get the joint motor torque
  return joint.GetMotorForce(1 / this._sharedData.timeStep);
};

// Pulley joint
gdjs.Physics2RuntimeBehavior.prototype.addPulleyJoint = function(
  x1,
  y1,
  other,
  x2,
  y2,
  groundX1,
  groundY1,
  groundX2,
  groundY2,
  lengthA,
  lengthB,
  ratio,
  collideConnected,
  variable
) {
  // If there is no body, set a new one
  if (this._body === null) this.createBody();
  // If there is no second object or it doesn't share the behavior, return
  if (other == null || !other.hasBehavior(this.name)) return;
  // Get the second body
  var otherBody = other.getBehavior(this.name).getBody();
  // If the first and second objects/bodies are the same, return
  if (this._body === otherBody) return;
  // Set joint settings
  var jointDef = new Box2D.b2PulleyJointDef();
  jointDef.set_bodyA(this._body);
  jointDef.set_localAnchorA(
    this._body.GetLocalPoint(
      this.b2Vec2(
        x1 * this._sharedData.invScaleX,
        y1 * this._sharedData.invScaleY
      )
    )
  );
  jointDef.set_bodyB(otherBody);
  jointDef.set_localAnchorB(
    otherBody.GetLocalPoint(
      this.b2Vec2(
        x2 * this._sharedData.invScaleX,
        y2 * this._sharedData.invScaleY
      )
    )
  );
  jointDef.set_groundAnchorA(
    this.b2Vec2(
      groundX1 * this._sharedData.invScaleX,
      groundY1 * this._sharedData.invScaleY
    )
  );
  jointDef.set_groundAnchorB(
    this.b2Vec2(
      groundX2 * this._sharedData.invScaleX,
      groundY2 * this._sharedData.invScaleY
    )
  );
  jointDef.set_lengthA(
    lengthA > 0
      ? lengthA * this._sharedData.invScaleX
      : this.b2Vec2(
          (groundX1 - x1) * this._sharedData.invScaleX,
          (groundY1 - y1) * this._sharedData.invScaleY
        ).Length()
  );
  jointDef.set_lengthB(
    lengthB > 0
      ? lengthB * this._sharedData.invScaleX
      : this.b2Vec2(
          (groundX2 - x2) * this._sharedData.invScaleX,
          (groundY2 - y2) * this._sharedData.invScaleY
        ).Length()
  );
  jointDef.set_ratio(ratio > 0 ? ratio : 1);
  jointDef.set_collideConnected(collideConnected);
  // Create the joint and get the id
  var jointId = this._sharedData.addJoint(
    Box2D.castObject(
      this._sharedData.world.CreateJoint(jointDef),
      Box2D.b2PulleyJoint
    )
  );
  // Store the id in the variable
  variable.setNumber(jointId);
};

gdjs.Physics2RuntimeBehavior.prototype.getPulleyJointFirstGroundAnchorX = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_pulleyJoint) return 0;
  // Get the joint ground anchor
  return joint.GetGroundAnchorA().get_x() * this._sharedData.scaleX;
};

gdjs.Physics2RuntimeBehavior.prototype.getPulleyJointFirstGroundAnchorY = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_pulleyJoint) return 0;
  // Get the joint ground anchor
  return joint.GetGroundAnchorA().get_y() * this._sharedData.scaleY;
};

gdjs.Physics2RuntimeBehavior.prototype.getPulleyJointSecondGroundAnchorX = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_pulleyJoint) return 0;
  // Get the joint ground anchor
  return joint.GetGroundAnchorB().get_x() * this._sharedData.scaleX;
};

gdjs.Physics2RuntimeBehavior.prototype.getPulleyJointSecondGroundAnchorY = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_pulleyJoint) return 0;
  // Get the joint ground anchor
  return joint.GetGroundAnchorB().get_y() * this._sharedData.scaleY;
};

gdjs.Physics2RuntimeBehavior.prototype.getPulleyJointFirstLength = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_pulleyJoint) return 0;
  // Get the joint length
  return joint.GetCurrentLengthA() * this._sharedData.scaleX;
};

gdjs.Physics2RuntimeBehavior.prototype.getPulleyJointSecondLength = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_pulleyJoint) return 0;
  // Get the joint length
  return joint.GetCurrentLengthB() * this._sharedData.scaleX;
};

gdjs.Physics2RuntimeBehavior.prototype.getPulleyJointRatio = function(jointId) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_pulleyJoint) return 0;
  // Get the joint ratio
  return joint.GetRatio();
};

// Gear joint
gdjs.Physics2RuntimeBehavior.prototype.addGearJoint = function(
  jointId1,
  jointId2,
  ratio,
  collideConnected,
  variable
) {
  // If there is no body, set a new one
  if (this._body === null) this.createBody();
  // Get the first joint
  var joint1 = this._sharedData.getJoint(jointId1);
  // Joint not found or has wrong type
  if (
    joint1 === null ||
    (joint1.GetType() !== Box2D.e_revoluteJoint &&
      joint1.GetType() !== Box2D.e_prismaticJoint)
  )
    return;
  // Get the second joint
  var joint2 = this._sharedData.getJoint(jointId2);
  if (
    joint2 === null ||
    (joint2.GetType() !== Box2D.e_revoluteJoint &&
      joint2.GetType() !== Box2D.e_prismaticJoint)
  )
    return;
  // The joints are the same
  if (joint1 === joint2) return;
  // Set joint settings
  var jointDef = new Box2D.b2GearJointDef();
  // Set gear joint bodies is not necessary at first, as the gear get the bodies from the two child joints
  // But we must pass two different bodies to bypass a test inherited from b2Joint
  jointDef.set_bodyA(this._sharedData.staticBody);
  jointDef.set_bodyB(this._body);
  jointDef.set_joint1(joint1);
  jointDef.set_joint2(joint2);
  jointDef.set_ratio(ratio);
  jointDef.set_collideConnected(collideConnected);
  // Create the joint and get the id
  var jointId = this._sharedData.addJoint(
    Box2D.castObject(
      this._sharedData.world.CreateJoint(jointDef),
      Box2D.b2GearJoint
    )
  );
  // Store the id in the variable
  variable.setNumber(jointId);
};

gdjs.Physics2RuntimeBehavior.prototype.getGearJointFirstJoint = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_gearJoint) return 0;
  // Get the joint first joint
  return this._sharedData.getJointId(joint.GetJoint1());
};

gdjs.Physics2RuntimeBehavior.prototype.getGearJointSecondJoint = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_gearJoint) return 0;
  // Get the joint second joint
  return this._sharedData.getJointId(joint.GetJoint2());
};

gdjs.Physics2RuntimeBehavior.prototype.getGearJointRatio = function(jointId) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_gearJoint) return 0;
  // Get the joint ratio
  return joint.GetRatio();
};

gdjs.Physics2RuntimeBehavior.prototype.setGearJointRatio = function(
  jointId,
  ratio
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_gearJoint) return;
  // Set the joint ratio
  joint.SetRatio(ratio);
  // Awake the bodies, the gear joint picks the dynamic bodies as first and second body (second bodies from the child joints)
  joint.GetBodyA().SetAwake(true);
  joint.GetBodyB().SetAwake(true);
};

// Mouse joint
gdjs.Physics2RuntimeBehavior.prototype.addMouseJoint = function(
  targetX,
  targetY,
  maxForce,
  frequency,
  dampingRatio,
  variable
) {
  // If there is no body, set a new one
  if (this._body === null) this.createBody();
  // Set joint settings
  var jointDef = new Box2D.b2MouseJointDef();
  jointDef.set_bodyA(this._sharedData.staticBody);
  jointDef.set_bodyB(this._body);
  jointDef.set_target(
    this.b2Vec2(
      targetX * this._sharedData.invScaleX,
      targetY * this._sharedData.invScaleY
    )
  );
  jointDef.set_maxForce(maxForce >= 0 ? maxForce : 0);
  jointDef.set_frequencyHz(frequency > 0 ? frequency : 1);
  jointDef.set_dampingRatio(dampingRatio >= 0 ? dampingRatio : 0);
  // Create the joint and get the id
  var jointId = this._sharedData.addJoint(
    Box2D.castObject(
      this._sharedData.world.CreateJoint(jointDef),
      Box2D.b2MouseJoint
    )
  );
  // Store the id in the variable
  variable.setNumber(jointId);
};

gdjs.Physics2RuntimeBehavior.prototype.getMouseJointTargetX = function(
  jointId
) {
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_mouseJoint) return 0;
  // Get the joint target X
  return joint.GetTarget().get_x() * this._sharedData.scaleX;
};

gdjs.Physics2RuntimeBehavior.prototype.getMouseJointTargetY = function(
  jointId
) {
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_mouseJoint) return 0;
  // Get the joint target Y
  return joint.GetTarget().get_y() * this._sharedData.scaleY;
};

gdjs.Physics2RuntimeBehavior.prototype.setMouseJointTarget = function(
  jointId,
  targetX,
  targetY
) {
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_mouseJoint) return;
  // Set the joint target
  joint.SetTarget(
    this.b2Vec2(
      targetX * this._sharedData.invScaleX,
      targetY * this._sharedData.invScaleY
    )
  );
  // Awake the body
  joint.GetBodyB().SetAwake(true);
};

gdjs.Physics2RuntimeBehavior.prototype.getMouseJointMaxForce = function(
  jointId
) {
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_mouseJoint) return 0;
  // Get the joint max force
  return joint.GetMaxForce();
};

gdjs.Physics2RuntimeBehavior.prototype.setMouseJointMaxForce = function(
  jointId,
  maxForce
) {
  // Invalid value
  if (maxForce < 0) return;
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_mouseJoint) return;
  // Set the joint max force
  joint.SetMaxForce(maxForce);
};

gdjs.Physics2RuntimeBehavior.prototype.getMouseJointFrequency = function(
  jointId
) {
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_mouseJoint) return 0;
  // Get the joint frequency
  return joint.GetFrequency();
};

gdjs.Physics2RuntimeBehavior.prototype.setMouseJointFrequency = function(
  jointId,
  frequency
) {
  // Invalid value
  if (frequency <= 0) return;
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_mouseJoint) return;
  // Set the joint frequency
  joint.SetFrequency(frequency);
};

gdjs.Physics2RuntimeBehavior.prototype.getMouseJointDampingRatio = function(
  jointId
) {
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_mouseJoint) return 0;
  // Get the joint damping ratio
  return joint.GetDampingRatio();
};

gdjs.Physics2RuntimeBehavior.prototype.setMouseJointDampingRatio = function(
  jointId,
  dampingRatio
) {
  // Invalid value
  if (dampingRatio < 0) return;
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_mouseJoint) return;
  // Set the joint damping ratio
  joint.SetDampingRatio(dampingRatio);
};

// Wheel joint
gdjs.Physics2RuntimeBehavior.prototype.addWheelJoint = function(
  x1,
  y1,
  other,
  x2,
  y2,
  axisAngle,
  frequency,
  dampingRatio,
  enableMotor,
  motorSpeed,
  maxMotorTorque,
  collideConnected,
  variable
) {
  // If there is no body, set a new one
  if (this._body === null) this.createBody();
  // If there is no second object or it doesn't share the behavior, return
  if (other == null || !other.hasBehavior(this.name)) return;
  // Get the second body
  var otherBody = other.getBehavior(this.name).getBody();
  // If the first and second objects/bodies are the same, return
  if (this._body === otherBody) return;
  // Set joint settings
  var jointDef = new Box2D.b2WheelJointDef();
  jointDef.set_bodyA(this._body);
  jointDef.set_localAnchorA(
    this._body.GetLocalPoint(
      this.b2Vec2(
        x1 * this._sharedData.invScaleX,
        y1 * this._sharedData.invScaleY
      )
    )
  );
  jointDef.set_bodyB(otherBody);
  jointDef.set_localAnchorB(
    otherBody.GetLocalPoint(
      this.b2Vec2(
        x2 * this._sharedData.invScaleX,
        y2 * this._sharedData.invScaleY
      )
    )
  );
  axisAngle = gdjs.toRad(axisAngle) - this._body.GetAngle();
  jointDef.set_localAxisA(
    this.b2Vec2(Math.cos(axisAngle), Math.sin(axisAngle))
  );
  jointDef.set_frequencyHz(frequency > 0 ? frequency : 1);
  jointDef.set_dampingRatio(dampingRatio >= 0 ? dampingRatio : 0);
  jointDef.set_enableMotor(enableMotor);
  jointDef.set_motorSpeed(gdjs.toRad(motorSpeed));
  jointDef.set_maxMotorTorque(maxMotorTorque);
  jointDef.set_collideConnected(collideConnected);
  // Create the joint and get the id
  var jointId = this._sharedData.addJoint(
    Box2D.castObject(
      this._sharedData.world.CreateJoint(jointDef),
      Box2D.b2WheelJoint
    )
  );
  // Store the id in the variable
  variable.setNumber(jointId);
};

gdjs.Physics2RuntimeBehavior.prototype.getWheelJointAxisAngle = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_wheelJoint) return 0;
  // Get the joint axis angle
  return gdjs.toDegrees(
    Math.atan2(joint.GetLocalAxisA().get_y(), joint.GetLocalAxisA().get_x()) +
      joint.GetBodyA().GetAngle()
  );
};

gdjs.Physics2RuntimeBehavior.prototype.getWheelJointTranslation = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_wheelJoint) return 0;
  // Get the joint current translation
  return joint.GetJointTranslation() * this._sharedData.scaleX;
};

gdjs.Physics2RuntimeBehavior.prototype.getWheelJointSpeed = function(jointId) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_wheelJoint) return 0;
  // Get the joint speed
  return gdjs.toDegrees(joint.GetJointSpeed());
};

gdjs.Physics2RuntimeBehavior.prototype.isWheelJointMotorEnabled = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_wheelJoint) return false;
  // Get the joint motor state
  return joint.IsMotorEnabled();
};

gdjs.Physics2RuntimeBehavior.prototype.enableWheelJointMotor = function(
  jointId,
  enable
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_wheelJoint) return;
  // Set the joint motor state
  joint.EnableMotor(enable);
};

gdjs.Physics2RuntimeBehavior.prototype.getWheelJointMotorSpeed = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_wheelJoint) return 0;
  // Get the joint motor speed
  return gdjs.toDegrees(joint.GetMotorSpeed());
};

gdjs.Physics2RuntimeBehavior.prototype.setWheelJointMotorSpeed = function(
  jointId,
  speed
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_wheelJoint) return;
  // Set the joint motor speed
  joint.SetMotorSpeed(gdjs.toRad(speed));
};

gdjs.Physics2RuntimeBehavior.prototype.getWheelJointMaxMotorTorque = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_wheelJoint) return 0;
  // Get the joint max motor torque
  return joint.GetMaxMotorTorque();
};

gdjs.Physics2RuntimeBehavior.prototype.setWheelJointMaxMotorTorque = function(
  jointId,
  maxTorque
) {
  // Invalid value
  if (maxTorque < 0) return;
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_wheelJoint) return;
  // Set the joint max motor torque
  joint.SetMaxMotorTorque(maxTorque);
};

gdjs.Physics2RuntimeBehavior.prototype.getWheelJointMotorTorque = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_wheelJoint) return 0;
  // Get the joint motor torque
  return joint.GetMotorTorque(1 / this._sharedData.timeStep);
};

gdjs.Physics2RuntimeBehavior.prototype.getWheelJointFrequency = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_wheelJoint) return 0;
  // Get the joint frequency
  return joint.GetSpringFrequencyHz();
};

gdjs.Physics2RuntimeBehavior.prototype.setWheelJointFrequency = function(
  jointId,
  frequency
) {
  // Invalid value
  if (frequency < 0) return;
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_wheelJoint) return;
  // Set the joint frequency
  joint.SetSpringFrequencyHz(frequency);
};

gdjs.Physics2RuntimeBehavior.prototype.getWheelJointDampingRatio = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_wheelJoint) return 0;
  // Get the joint damping ratio
  return joint.GetSpringDampingRatio();
};

gdjs.Physics2RuntimeBehavior.prototype.setWheelJointDampingRatio = function(
  jointId,
  dampingRatio
) {
  // Invalid value
  if (dampingRatio < 0) return;
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_wheelJoint) return;
  // Set the joint damping ratio
  joint.SetSpringDampingRatio(dampingRatio);
};

// Weld joint
gdjs.Physics2RuntimeBehavior.prototype.addWeldJoint = function(
  x1,
  y1,
  other,
  x2,
  y2,
  referenceAngle,
  frequency,
  dampingRatio,
  collideConnected,
  variable
) {
  // If there is no body, set a new one
  if (this._body === null) this.createBody();
  // If there is no second object or it doesn't share the behavior, return
  if (other == null || !other.hasBehavior(this.name)) return;
  // Get the second body
  var otherBody = other.getBehavior(this.name).getBody();
  // If the first and second objects/bodies are the same, return
  if (this._body === otherBody) return;
  // Set joint settings
  var jointDef = new Box2D.b2WeldJointDef();
  jointDef.set_bodyA(this._body);
  jointDef.set_localAnchorA(
    this._body.GetLocalPoint(
      this.b2Vec2(
        x1 * this._sharedData.invScaleX,
        y1 * this._sharedData.invScaleY
      )
    )
  );
  jointDef.set_bodyB(otherBody);
  jointDef.set_localAnchorB(
    otherBody.GetLocalPoint(
      this.b2Vec2(
        x2 * this._sharedData.invScaleX,
        y2 * this._sharedData.invScaleY
      )
    )
  );
  jointDef.set_referenceAngle(gdjs.toRad(referenceAngle));
  jointDef.set_frequencyHz(frequency > 0 ? frequency : 1);
  jointDef.set_dampingRatio(dampingRatio >= 0 ? dampingRatio : 0);
  jointDef.set_collideConnected(collideConnected);
  // Create the joint
  var joint = Box2D.castObject(
    this._sharedData.world.CreateJoint(jointDef),
    Box2D.b2WeldJoint
  );
  // b2WeldJoint.GetReferenceAngle() is not binded, store it manually
  joint.referenceAngle = jointDef.get_referenceAngle();
  // Store the id in the variable
  variable.setNumber(this._sharedData.addJoint(joint));
};

gdjs.Physics2RuntimeBehavior.prototype.getWeldJointReferenceAngle = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_weldJoint) return 0;
  // b2WeldJoint.GetReferenceAngle() is not binded
  // return gdjs.toDegrees(joint.GetReferenceAngle());
  return gdjs.toDegrees(joint.referenceAngle);
};

gdjs.Physics2RuntimeBehavior.prototype.getWeldJointFrequency = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_weldJoint) return 0;
  // Get the joint frequency
  return joint.GetFrequency();
};

gdjs.Physics2RuntimeBehavior.prototype.setWeldJointFrequency = function(
  jointId,
  frequency
) {
  // Invalid value
  if (frequency < 0) return;
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_weldJoint) return;
  // Set the joint frequency
  joint.SetFrequency(frequency);
};

gdjs.Physics2RuntimeBehavior.prototype.getWeldJointDampingRatio = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_weldJoint) return 0;
  // Get the joint damping ratio
  return joint.GetDampingRatio();
};

gdjs.Physics2RuntimeBehavior.prototype.setWeldJointDampingRatio = function(
  jointId,
  dampingRatio
) {
  // Invalid value
  if (dampingRatio < 0) return;
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_weldJoint) return;
  // Set the joint damping ratio
  joint.SetDampingRatio(dampingRatio);
};

// Rope joint
gdjs.Physics2RuntimeBehavior.prototype.addRopeJoint = function(
  x1,
  y1,
  other,
  x2,
  y2,
  maxLength,
  collideConnected,
  variable
) {
  // If there is no body, set a new one
  if (this._body === null) this.createBody();
  // If there is no second object or it doesn't share the behavior, return
  if (other == null || !other.hasBehavior(this.name)) return;
  // Get the second body
  var otherBody = other.getBehavior(this.name).getBody();
  // If the first and second objects/bodies are the same, return
  if (this._body === otherBody) return;
  // Set joint settings
  var jointDef = new Box2D.b2RopeJointDef();
  jointDef.set_bodyA(this._body);
  jointDef.set_localAnchorA(
    this._body.GetLocalPoint(
      this.b2Vec2(
        x1 * this._sharedData.invScaleX,
        y1 * this._sharedData.invScaleY
      )
    )
  );
  jointDef.set_bodyB(otherBody);
  jointDef.set_localAnchorB(
    otherBody.GetLocalPoint(
      this.b2Vec2(
        x2 * this._sharedData.invScaleX,
        y2 * this._sharedData.invScaleY
      )
    )
  );
  jointDef.set_maxLength(
    maxLength > 0
      ? maxLength * this._sharedData.invScaleX
      : this.b2Vec2(
          (x2 - x1) * this._sharedData.invScaleX,
          (y2 - y1) * this._sharedData.invScaleY
        ).Length()
  );
  jointDef.set_collideConnected(collideConnected);
  // Create the joint and get the id
  var jointId = this._sharedData.addJoint(
    Box2D.castObject(
      this._sharedData.world.CreateJoint(jointDef),
      Box2D.b2RopeJoint
    )
  );
  // Store the id in the variable
  variable.setNumber(jointId);
};

gdjs.Physics2RuntimeBehavior.prototype.getRopeJointMaxLength = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_ropeJoint) return 0;
  // Get the joint maximum length
  return joint.GetMaxLength() * this._sharedData.scaleX;
};

gdjs.Physics2RuntimeBehavior.prototype.setRopeJointMaxLength = function(
  jointId,
  maxLength
) {
  // Invalid value
  if (maxLength < 0) return;
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_ropeJoint) return;
  // Set the joint maximum length
  joint.SetMaxLength(maxLength * this._sharedData.invScaleX);
  // Awake the bodies
  joint.GetBodyA().SetAwake(true);
  joint.GetBodyB().SetAwake(true);
};

// Friction joint
gdjs.Physics2RuntimeBehavior.prototype.addFrictionJoint = function(
  x1,
  y1,
  other,
  x2,
  y2,
  maxForce,
  maxTorque,
  collideConnected,
  variable
) {
  // If there is no body, set a new one
  if (this._body === null) this.createBody();
  // If there is no second object or it doesn't share the behavior, return
  if (other == null || !other.hasBehavior(this.name)) return;
  // Get the second body
  var otherBody = other.getBehavior(this.name).getBody();
  // If the first and second objects/bodies are the same, return
  if (this._body === otherBody) return;
  // Set joint settings
  var jointDef = new Box2D.b2FrictionJointDef();
  jointDef.set_bodyA(this._body);
  jointDef.set_localAnchorA(
    this._body.GetLocalPoint(
      this.b2Vec2(
        x1 * this._sharedData.invScaleX,
        y1 * this._sharedData.invScaleY
      )
    )
  );
  jointDef.set_bodyB(otherBody);
  jointDef.set_localAnchorB(
    otherBody.GetLocalPoint(
      this.b2Vec2(
        x2 * this._sharedData.invScaleX,
        y2 * this._sharedData.invScaleY
      )
    )
  );
  jointDef.set_maxForce(maxForce >= 0 ? maxForce : 0);
  jointDef.set_maxTorque(maxTorque >= 0 ? maxTorque : 0);
  jointDef.set_collideConnected(collideConnected);
  // Create the joint and get the id
  var jointId = this._sharedData.addJoint(
    Box2D.castObject(
      this._sharedData.world.CreateJoint(jointDef),
      Box2D.b2FrictionJoint
    )
  );
  // Store the id in the variable
  variable.setNumber(jointId);
};

gdjs.Physics2RuntimeBehavior.prototype.getFrictionJointMaxForce = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_frictionJoint) return 0;
  // Get the joint maximum force
  return joint.GetMaxForce();
};

gdjs.Physics2RuntimeBehavior.prototype.setFrictionJointMaxForce = function(
  jointId,
  maxForce
) {
  // Invalid value
  if (maxForce < 0) return;
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_frictionJoint) return;
  // Set the joint maximum force
  joint.SetMaxForce(maxForce);
};

gdjs.Physics2RuntimeBehavior.prototype.getFrictionJointMaxTorque = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_frictionJoint) return 0;
  // Get the joint maximum torque
  return joint.GetMaxTorque();
};

gdjs.Physics2RuntimeBehavior.prototype.setFrictionJointMaxTorque = function(
  jointId,
  maxTorque
) {
  // Invalid value
  if (maxTorque < 0) return;
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_frictionJoint) return;
  // Set the joint maximum torque
  joint.SetMaxTorque(maxTorque);
};

// Motor joint
gdjs.Physics2RuntimeBehavior.prototype.addMotorJoint = function(
  other,
  offsetX,
  offsetY,
  offsetAngle,
  maxForce,
  maxTorque,
  correctionFactor,
  collideConnected,
  variable
) {
  // If there is no body, set a new one
  if (this._body === null) this.createBody();
  // If there is no second object or it doesn't share the behavior, return
  if (other == null || !other.hasBehavior(this.name)) return;
  // Get the second body
  var otherBody = other.getBehavior(this.name).getBody();
  // If the first and second objects/bodies are the same, return
  if (this._body === otherBody) return;
  // Set joint settings
  var jointDef = new Box2D.b2MotorJointDef();
  jointDef.set_bodyA(this._body);
  jointDef.set_bodyB(otherBody);
  jointDef.set_linearOffset(
    this.b2Vec2(
      offsetX * this._sharedData.invScaleX,
      offsetY * this._sharedData.invScaleY
    )
  );
  jointDef.set_angularOffset(gdjs.toRad(offsetAngle));
  jointDef.set_maxForce(maxForce >= 0 ? maxForce : 0);
  jointDef.set_maxTorque(maxTorque >= 0 ? maxTorque : 0);
  jointDef.set_correctionFactor(
    correctionFactor < 0 ? 0 : correctionFactor > 1 ? 1 : correctionFactor
  );
  jointDef.set_collideConnected(collideConnected);
  // Create the joint and get the id
  var jointId = this._sharedData.addJoint(
    Box2D.castObject(
      this._sharedData.world.CreateJoint(jointDef),
      Box2D.b2MotorJoint
    )
  );
  // Store the id in the variable
  variable.setNumber(jointId);
};

gdjs.Physics2RuntimeBehavior.prototype.getMotorJointOffsetX = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_motorJoint) return 0;
  // Get the joint offset
  return joint.GetLinearOffset().get_x() * this._sharedData.scaleX;
};

gdjs.Physics2RuntimeBehavior.prototype.getMotorJointOffsetY = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_motorJoint) return 0;
  // Get the joint offset
  return joint.GetLinearOffset().get_y() * this._sharedData.scaleY;
};

gdjs.Physics2RuntimeBehavior.prototype.setMotorJointOffset = function(
  jointId,
  offsetX,
  offsetY
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_motorJoint) return;
  // Set the joint offset
  joint.SetLinearOffset(
    this.b2Vec2(
      offsetX * this._sharedData.invScaleX,
      offsetY * this._sharedData.invScaleY
    )
  );
};

gdjs.Physics2RuntimeBehavior.prototype.getMotorJointAngularOffset = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_motorJoint) return 0;
  // Get the joint angular offset
  return gdjs.toDegrees(joint.GetAngularOffset());
};

gdjs.Physics2RuntimeBehavior.prototype.setMotorJointAngularOffset = function(
  jointId,
  offsetAngle
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_motorJoint) return;
  // Set the joint angular offset
  joint.SetAngularOffset(gdjs.toRad(offsetAngle));
};

gdjs.Physics2RuntimeBehavior.prototype.getMotorJointMaxForce = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_motorJoint) return 0;
  // Get the joint maximum force
  return joint.GetMaxForce();
};

gdjs.Physics2RuntimeBehavior.prototype.setMotorJointMaxForce = function(
  jointId,
  maxForce
) {
  // Invalid value
  if (maxForce < 0) return;
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_motorJoint) return;
  // Set the joint maximum force
  joint.SetMaxForce(maxForce);
};

gdjs.Physics2RuntimeBehavior.prototype.getMotorJointMaxTorque = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_motorJoint) return 0;
  // Get the joint maximum torque
  return joint.GetMaxTorque();
};

gdjs.Physics2RuntimeBehavior.prototype.setMotorJointMaxTorque = function(
  jointId,
  maxTorque
) {
  // Invalid value
  if (maxTorque < 0) return;
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_motorJoint) return;
  // Set the joint maximum torque
  joint.SetMaxTorque(maxTorque);
  // Awake the bodies
  joint.GetBodyA().SetAwake(true);
  joint.GetBodyB().SetAwake(true);
};

gdjs.Physics2RuntimeBehavior.prototype.getMotorJointCorrectionFactor = function(
  jointId
) {
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_motorJoint) return 0;
  // Get the joint correction factor
  return joint.GetCorrectionFactor();
};

gdjs.Physics2RuntimeBehavior.prototype.setMotorJointCorrectionFactor = function(
  jointId,
  correctionFactor
) {
  // Invalid value
  if (correctionFactor < 0 || correctionFactor > 1) return;
  // Get the joint
  var joint = this._sharedData.getJoint(jointId);
  // Joint not found or has wrong type
  if (joint === null || joint.GetType() !== Box2D.e_motorJoint) return;
  // Set the joint correction factor
  joint.SetCorrectionFactor(correctionFactor);
  // Awake the bodies
  joint.GetBodyA().SetAwake(true);
  joint.GetBodyB().SetAwake(true);
};

// Collision
gdjs.Physics2RuntimeBehavior.collisionTest = function(
  object1,
  object2,
  behaviorName
) {
  // Check if the objects exist and share the behavior
  if (object1 === null || !object1.hasBehavior(behaviorName)) return false;
  if (object2 === null || !object2.hasBehavior(behaviorName)) return false;
  // Test if the second object is in the list of contacts of the first one
  var behavior1 = object1.getBehavior(behaviorName);
  for (var i = 0, len = behavior1.currentContacts.length; i < len; ++i) {
    if (behavior1.currentContacts[i].owner === object2) {
      return true;
    }
  }
  // No contact found
  return false;
};