Added drop chance calculator.

osrs-toolbox/Models/DropChanceModel.cs

@@ -0,0 +1,95 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Navigation;
+
+namespace osrs_toolbox
+{
+    public abstract class DropChanceModel : ModelBase
+    {
+        private double _dropRate;
+        private int _currentKC;
+
+        private double _chanceAtCurrent;
+        private int _kcForFifty;
+        private int _kcForNinety;
+
+        private double _chanceCheck;
+
+        private int _kcForChanceCheck;
+
+        public double DropRate
+        {
+            get { return _dropRate; }
+            set 
+            { 
+                SetProperty(ref _dropRate, value, nameof(DropRate)); 
+                OnPropertyChanged(nameof(ChanceAtCurrent)); 
+                OnPropertyChanged(nameof(KCForFifty)); 
+                OnPropertyChanged(nameof(KCForNinety));
+                OnPropertyChanged(nameof(KCForChanceCheck));
+            }
+        }
+        public int CurrentKC
+        {
+            get { return _currentKC; }
+            set
+            {
+                SetProperty(ref _currentKC, value, nameof(CurrentKC));
+                OnPropertyChanged(nameof(ChanceAtCurrent));
+                OnPropertyChanged(nameof(KCForFifty));
+                OnPropertyChanged(nameof(KCForNinety));
+            }
+        }
+
+        public double ChanceAtCurrent
+        {
+            get
+            {
+                double rate = DropRate > 1 ? (1 / DropRate) : DropRate;
+                return 1 - Math.Pow(1 - rate,CurrentKC);
+            }
+        }
+        public int KCForFifty
+        {
+            get
+            {
+                double rate = DropRate > 1 ? (1 / DropRate) : DropRate;
+                double kc = Math.Log(1 / 2) / Math.Log(1 - rate);
+                return (int)Math.Round(kc, MidpointRounding.AwayFromZero);
+            }
+        }
+        public int KCForNinety
+        {
+            get
+            {
+                double rate = DropRate > 1 ? (1 / DropRate) : DropRate;
+                double kc = Math.Log(1 / 10) / Math.Log(1 - rate);
+                return (int)Math.Ceiling(kc);
+            }
+        }
+
+        public double ChanceCheck
+        {
+            get { return _chanceCheck; }
+            set
+            {
+                SetProperty(ref _chanceCheck, value, nameof(ChanceCheck));
+                OnPropertyChanged(nameof(KCForChanceCheck));
+            }
+        }
+
+        public int KCForChanceCheck
+        {
+            get
+            {
+                double rate = DropRate > 1 ? (1 / DropRate) : DropRate;
+                double chance = ChanceCheck > 1 ? (ChanceCheck / 100) : ChanceCheck;
+                double kc = Math.Log(1 - chance) / Math.Log(1 - rate);
+                return (int)Math.Ceiling(kc);
+            }
+        }
+    }
+}

osrs-toolbox/Models/HomePageModel.cs

@@ -12,11 +12,18 @@ namespace osrs_toolbox
     public abstract class HomePageModel : ModelBase
     {
         private ICommand _openCompetitionOverlaySettings;
+        private ICommand _openDropChanceCalculator;
 
         public ICommand OpenCompetitionOverlaySettings
         {
             get { return _openCompetitionOverlaySettings; }
             set { SetProperty(ref _openCompetitionOverlaySettings, value, nameof(OpenCompetitionOverlaySettings)); }
         }
+
+        public ICommand OpenDropChanceCalculator
+        {
+            get { return _openDropChanceCalculator; }
+            set { SetProperty(ref _openDropChanceCalculator, value, nameof(OpenDropChanceCalculator)); }
+        }
     }
 }

osrs-toolbox/ViewModels/DropChanceViewModel.cs

@@ -0,0 +1,29 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace osrs_toolbox
+{
+    public class DropChanceViewModel : DropChanceModel
+    {
+        public DropChanceViewModel() 
+        {
+            InitializeVariables();
+            InitializeCommands();
+        }
+
+        private void InitializeVariables()
+        {
+            DropRate = 1;
+            CurrentKC = 1;
+            ChanceCheck = 1;
+        }
+
+        private void InitializeCommands()
+        {
+
+        }
+    }
+}

osrs-toolbox/ViewModels/HomePageViewModel.cs

@@ -23,6 +23,7 @@ namespace osrs_toolbox
         private void InitializeCommands()
         {
             OpenCompetitionOverlaySettings = new RelayCommand(DoOpenCompetitionOverlaySettings);
+            OpenDropChanceCalculator = new RelayCommand(DoOpenDropChanceCalculator);
         }
 
         private void DoOpenCompetitionOverlaySettings(object obj)
@@ -38,5 +39,19 @@ namespace osrs_toolbox
                 cosv.Show();
             }
         }
+
+        private void DoOpenDropChanceCalculator(object obj)
+        {
+            if (DropChanceView.Current != null)
+            {
+                DropChanceView.Current.Close();
+                DropChanceView.Current = null;
+            }
+            else
+            {
+                DropChanceView dcv = new DropChanceView();
+                dcv.Show();
+            }
+        }
     }
 }

osrs-toolbox/Views/DropChanceView.xaml

@@ -0,0 +1,41 @@
+<Window x:Class="osrs_toolbox.DropChanceView"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        xmlns:local="clr-namespace:osrs_toolbox"
+        mc:Ignorable="d"
+        Title="Drop Chance Calculator" Height="450" Width="800" SizeToContent="WidthAndHeight">
+    <Window.DataContext>
+        <local:DropChanceViewModel/>
+    </Window.DataContext>
+    <Grid>
+        <Grid.RowDefinitions>
+            <RowDefinition Height="Auto"/>
+            <RowDefinition Height="Auto"/>
+            <RowDefinition Height="Auto"/>
+            <RowDefinition Height="Auto"/>
+            <RowDefinition Height="Auto"/>
+            <RowDefinition Height="Auto"/>
+            <RowDefinition Height="Auto"/>
+        </Grid.RowDefinitions>
+        <Grid.ColumnDefinitions>
+            <ColumnDefinition Width="*"/>
+            <ColumnDefinition Width="2*"/>
+        </Grid.ColumnDefinitions>
+        <TextBlock Text="Drop Rate:" Grid.Row="0" Grid.Column="0" VerticalAlignment="Center" HorizontalAlignment="Left" Margin="3"/>
+        <TextBlock Text="Current KC:" Grid.Row="1" Grid.Column="0" VerticalAlignment="Center" HorizontalAlignment="Left" Margin="3"/>
+        <TextBlock Text="Chance at Current KC:" Grid.Row="2" Grid.Column="0" VerticalAlignment="Center" HorizontalAlignment="Left" Margin="3"/>
+        <!--TextBlock Text="KC for 50% Chance:" Grid.Row="3" Grid.Column="0" VerticalAlignment="Center" HorizontalAlignment="Left" Margin="3"/-->
+        <!--TextBlock Text="KC for 90% Chance:" Grid.Row="4" Grid.Column="0" VerticalAlignment="Center" HorizontalAlignment="Left" Margin="3"/-->
+        <TextBlock Text="X% Chance:" Grid.Row="5" Grid.Column="0" VerticalAlignment="Center" HorizontalAlignment="Left" Margin="3"/>
+        <TextBlock Text="KC for X% Chance:" Grid.Row="6" Grid.Column="0" VerticalAlignment="Center" HorizontalAlignment="Left" Margin="3"/>
+        <TextBox Text="{Binding DropRate, UpdateSourceTrigger=PropertyChanged}" Grid.Row="0" Grid.Column="1" VerticalAlignment="Center" HorizontalAlignment="Stretch" Margin="3"/>
+        <TextBox Text="{Binding CurrentKC, UpdateSourceTrigger=PropertyChanged}" Grid.Row="1" Grid.Column="1" VerticalAlignment="Center" HorizontalAlignment="Stretch" Margin="3"/>
+        <TextBlock Text="{Binding ChanceAtCurrent, UpdateSourceTrigger=PropertyChanged}" Grid.Row="2" Grid.Column="1" VerticalAlignment="Center" HorizontalAlignment="Left" Margin="3"/>
+        <!--TextBlock Text="{Binding KCForFifty, UpdateSourceTrigger=PropertyChanged}" Grid.Row="3" Grid.Column="1" VerticalAlignment="Center" HorizontalAlignment="Left" Margin="3"/-->
+        <!--TextBlock Text="{Binding KCForNinety, UpdateSourceTrigger=PropertyChanged}" Grid.Row="4" Grid.Column="1" VerticalAlignment="Center" HorizontalAlignment="Left" Margin="3"/-->
+        <TextBox Text="{Binding ChanceCheck, UpdateSourceTrigger=PropertyChanged}" Grid.Row="5" Grid.Column="1" VerticalAlignment="Center" HorizontalAlignment="Stretch" Margin="3"/>
+        <TextBlock Text="{Binding KCForChanceCheck, UpdateSourceTrigger=PropertyChanged}" Grid.Row="6" Grid.Column="1" VerticalAlignment="Center" HorizontalAlignment="Left" Margin="3"/>
+    </Grid>
+</Window>

osrs-toolbox/Views/DropChanceView.xaml.cs

@@ -0,0 +1,29 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Data;
+using System.Windows.Documents;
+using System.Windows.Input;
+using System.Windows.Media;
+using System.Windows.Media.Imaging;
+using System.Windows.Shapes;
+
+namespace osrs_toolbox
+{
+    /// <summary>
+    /// Interaction logic for DropChanceView.xaml
+    /// </summary>
+    public partial class DropChanceView : Window
+    {
+        public static DropChanceView Current;
+        public DropChanceView()
+        {
+            InitializeComponent();
+            Current = this;
+        }
+    }
+}

osrs-toolbox/Views/HomePageView.xaml

@@ -9,7 +9,8 @@
     <Window.DataContext>
         <local:HomePageViewModel/>
     </Window.DataContext>
-    <Grid>
+    <StackPanel>
         <Button Command="{Binding OpenCompetitionOverlaySettings, UpdateSourceTrigger=PropertyChanged}" Content="Open Competition Overlay Settings" Margin="3" Padding="3" VerticalAlignment="Center" HorizontalAlignment="Center"/>
-    </Grid>
+        <Button Command="{Binding OpenDropChanceCalculator, UpdateSourceTrigger=PropertyChanged}" Content="Open Drop Chance Calculator" Margin="3" Padding="3" VerticalAlignment="Center" HorizontalAlignment="Center"/>
+    </StackPanel>
 </Window>