More solid grid to pixel conversion

DepthsBelow/DepthsBelow/Component/GridTransform.cs

@@ -8,8 +8,8 @@ namespace DepthsBelow.Component
 {
 	public class GridTransform : Component
 	{
-		public Vector2 Position;
-		public float X
+		public Point Position;
+		public int X
 		{
 			get
 			{
@@ -20,7 +20,7 @@ namespace DepthsBelow.Component
 				Position.X = value;
 			}
 		}
-		public float Y
+		public int Y
 		{
 			get
 			{
@@ -34,7 +34,12 @@ namespace DepthsBelow.Component
 
 		public GridTransform(Entity parent) : base(parent)
 		{
-			Position = Vector2.Zero;
+			Position = Point.Zero;
+		}
+
+		public Vector2 ToScreen()
+		{
+			return Grid.GridToScreen(Position);
 		}
 	}
 }

DepthsBelow/DepthsBelow/Component/PixelTransform.cs

@@ -41,5 +41,10 @@ namespace DepthsBelow.Component
 			Rotation = 0.0f;
 			Origin = Vector2.Zero;
 		}
+
+		public Point ToGrid()
+		{
+			return Grid.ScreenToGrid(Position);
+		}
 	}
 }

DepthsBelow/DepthsBelow/Grid.cs

@@ -1,4 +1,5 @@
-using Microsoft.Xna.Framework;
+using System;
+using Microsoft.Xna.Framework;
 
 namespace DepthsBelow
 {
@@ -6,13 +7,17 @@ namespace DepthsBelow
     {
         public const int TileSize = 32;
 
-		public static Vector2 GridToScreen(Vector2 gridPos)
+		public static Vector2 GridToScreen(Point gridPos)
 		{
-			return gridPos * TileSize;
+			return new Vector2(gridPos.X * TileSize, gridPos.Y * TileSize);
 		}
-		public static Vector2 ScreenToGrid(Vector2 screenPos)
-		{
-			return screenPos / TileSize;
+
+	    public static Point ScreenToGrid(Vector2 screenPos)
+	    {
+		    return new Point(
+				(int)Math.Floor(screenPos.X / TileSize),	
+				(int)Math.Floor(screenPos.Y / TileSize)	
+			);
 		}
     }
 }

DepthsBelow/DepthsBelow/MouseInput.cs

@@ -16,7 +16,6 @@ namespace DepthsBelow
 		MouseState lastMouseState;
 		Rectangle selectionRectangle;
 		Texture2D selectionTexture;
-
         Rectangle gridRectangle;
         Texture2D gridTexture;
 
@@ -25,6 +24,7 @@ namespace DepthsBelow
 			this.core = core;
 
 			selectionRectangle = Rectangle.Empty;
+			gridRectangle = Rectangle.Empty;
 		}
 
 		public void LoadContent()
@@ -41,6 +41,7 @@ namespace DepthsBelow
 			MouseState ms = Mouse.GetState();
 			KeyboardState ks = Keyboard.GetState();
 
+			// Selection rectangle
 			if (ms.LeftButton == ButtonState.Pressed)
 			{
 				if (selectionRectangle == Rectangle.Empty)
@@ -53,7 +54,6 @@ namespace DepthsBelow
 					selectionRectangle.Height = ms.Y - selectionRectangle.Y + (int)core.camera.Position.Y;
 				}
 			}
-
 			if (ms.LeftButton == ButtonState.Released && selectionRectangle != Rectangle.Empty)
 			{
 				if (!ks.IsKeyDown(Keys.LeftControl))
@@ -67,9 +67,8 @@ namespace DepthsBelow
 				selectionRectangle = Rectangle.Empty;
 			}
 
-			Vector2 currentGrid = Grid.ScreenToGrid(new Vector2(ms.X + core.camera.Position.X - Grid.TileSize / 2, ms.Y + core.camera.Position.Y - Grid.TileSize / 2));
-            currentGrid.X = Convert.ToInt32(currentGrid.X);
-            currentGrid.Y = Convert.ToInt32(currentGrid.Y);
+			// Grid highlighting
+			Point currentGrid = Grid.ScreenToGrid(new Vector2(ms.X + core.camera.Position.X, ms.Y + core.camera.Position.Y));
 			Vector2 currentScreen = Grid.GridToScreen(currentGrid);
 			gridRectangle = new Rectangle((int)currentScreen.X, (int)currentScreen.Y, Grid.TileSize, Grid.TileSize);
 
@@ -78,8 +77,8 @@ namespace DepthsBelow
 
 		public void Draw(SpriteBatch spriteBatch)
 		{
-            spriteBatch.Draw(gridTexture, gridRectangle, Color.Yellow * 0.3f);
 			spriteBatch.Draw(selectionTexture, selectionRectangle, Color.Red * 0.5f);
+			spriteBatch.Draw(gridTexture, gridRectangle, Color.Yellow * 0.3f);
 		}
 	}
 }

DepthsBelow/DepthsBelow/Soldier.cs

@@ -71,13 +71,13 @@ namespace DepthsBelow
 			lastKeyboardState = ks;
 
 			int speed = 2;
-			if (pixelTransform.X < gridTransform.X * 32)
+			if (pixelTransform.X < gridTransform.ToScreen().X)
 				pixelTransform.X += speed;
-			else if (pixelTransform.X > gridTransform.X * 32)
+			else if (pixelTransform.X > gridTransform.ToScreen().X)
 				pixelTransform.X -= speed;
-			else if (pixelTransform.Y < gridTransform.Y * 32)
+			else if (pixelTransform.Y < gridTransform.ToScreen().Y)
 				pixelTransform.Y += speed;
-			else if (pixelTransform.Y > gridTransform.Y * 32)
+			else if (pixelTransform.Y > gridTransform.ToScreen().Y)
 				pixelTransform.Y -= speed;
 		}
 	}