From 313167e2a31a40058315a315fc9b813cf3da6a7c Mon Sep 17 00:00:00 2001
From: Niklas Ulf Anders Cullberg <niklas.cullberg@hotmail.com>
Date: Thu, 27 Sep 2012 19:10:10 +0200
Subject: [PATCH] Added Grid, Inserted gridRectangle

---
 DepthsBelow/DepthsBelow/Core.cs            |  3 ++
 DepthsBelow/DepthsBelow/DepthsBelow.csproj |  1 +
 DepthsBelow/DepthsBelow/Grid.cs            | 33 ++++++++++++++++++++++
 DepthsBelow/DepthsBelow/MouseInput.cs      | 12 ++++++++
 4 files changed, 49 insertions(+)
 create mode 100644 DepthsBelow/DepthsBelow/Grid.cs

diff --git a/DepthsBelow/DepthsBelow/Core.cs b/DepthsBelow/DepthsBelow/Core.cs
index 752f8e9..5f538a6 100644
--- a/DepthsBelow/DepthsBelow/Core.cs
+++ b/DepthsBelow/DepthsBelow/Core.cs
@@ -22,6 +22,7 @@ namespace DepthsBelow
 		public Camera camera;
 		MouseInput mouseInput;
 		public Soldier soldier;
+        public Grid GridChecker;
 		private Map map;
 
 		public Core()
@@ -68,6 +69,8 @@ namespace DepthsBelow
 			Soldier.LoadContent(this);
 			soldier = new Soldier(this);
 
+            GridChecker = new Grid();
+
 			mouseInput = new MouseInput(this);
 			mouseInput.LoadContent();
 		}
diff --git a/DepthsBelow/DepthsBelow/DepthsBelow.csproj b/DepthsBelow/DepthsBelow/DepthsBelow.csproj
index 7679bfa..6ba8661 100644
--- a/DepthsBelow/DepthsBelow/DepthsBelow.csproj
+++ b/DepthsBelow/DepthsBelow/DepthsBelow.csproj
@@ -121,6 +121,7 @@
   </ItemGroup>
   <ItemGroup>
     <Compile Include="Camera.cs" />
+    <Compile Include="Grid.cs" />
     <Compile Include="Component\Collision.cs" />
     <Compile Include="Component\Component.cs" />
     <Compile Include="Component\GridTransform.cs" />
diff --git a/DepthsBelow/DepthsBelow/Grid.cs b/DepthsBelow/DepthsBelow/Grid.cs
new file mode 100644
index 0000000..2fc0fce
--- /dev/null
+++ b/DepthsBelow/DepthsBelow/Grid.cs
@@ -0,0 +1,33 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using Microsoft.Xna.Framework;
+
+namespace DepthsBelow
+{
+    public class Grid
+    {
+        public const int TilePixelSize = 32;
+        public int TileSize() { return TilePixelSize; }
+        /*public Vector2 GridToScreen(Vector2 gridPos);
+        public Vector2 ScreenToGrid(Vector2 screenPos);*/
+
+        public Vector2 GridToScreen;
+        public Vector2 ScreenToGrid;
+
+        public Grid()
+        {
+
+        }
+
+        public Vector2 FindScreenPos(Vector2 gridPos) 
+        {
+            return gridPos * TileSize();
+        }
+        public Vector2 FindGridPos(Vector2 screenPos)
+        {
+            return screenPos / TileSize();
+        }
+    }
+}
diff --git a/DepthsBelow/DepthsBelow/MouseInput.cs b/DepthsBelow/DepthsBelow/MouseInput.cs
index 40a3c22..b207ee0 100644
--- a/DepthsBelow/DepthsBelow/MouseInput.cs
+++ b/DepthsBelow/DepthsBelow/MouseInput.cs
@@ -17,6 +17,9 @@ namespace DepthsBelow
 		Rectangle selectionRectangle;
 		Texture2D selectionTexture;
 
+        Rectangle gridRectangle;
+        Texture2D gridTexture;
+
 		public MouseInput(Core core)
 		{
 			this.core = core;
@@ -28,6 +31,9 @@ namespace DepthsBelow
 		{
 			selectionTexture = new Texture2D(core.GraphicsDevice, 1, 1);
 			selectionTexture.SetData(new Color[] { Color.White });
+
+            gridTexture = new Texture2D(core.GraphicsDevice, 1, 1);
+            gridTexture.SetData(new Color[] { Color.White });
 		}
 
 		public void Update(GameTime gameTime)
@@ -60,12 +66,18 @@ namespace DepthsBelow
 				
 				selectionRectangle = Rectangle.Empty;
 			}
+            Vector2 currentGrid = core.GridChecker.FindGridPos(new Vector2(ms.X + core.camera.Position.X - core.GridChecker.TileSize() / 2, ms.Y + core.camera.Position.Y - core.GridChecker.TileSize() / 2));
+            currentGrid.X = Convert.ToInt32(currentGrid.X);
+            currentGrid.Y = Convert.ToInt32(currentGrid.Y);
+            Vector2 currentScreen = core.GridChecker.FindScreenPos(currentGrid);
+            gridRectangle = new Rectangle((int)currentScreen.X, (int)currentScreen.Y, core.GridChecker.TileSize(), core.GridChecker.TileSize());
 
 			lastMouseState = ms;
 		}
 
 		public void Draw(SpriteBatch spriteBatch)
 		{
+            spriteBatch.Draw(gridTexture, gridRectangle, Color.Yellow * 0.3f);
 			spriteBatch.Draw(selectionTexture, selectionRectangle, Color.Red * 0.5f);
 		}
 	}