added ghost display to renderer

FieldLogic.cs

@@ -246,6 +246,7 @@ protected override void DoUpdate(FrameEventArgs e)
 	      {
 		field[currentTetramino.x + x, currentTetramino.y + y, false].inUse = map[x, y];
 		field[currentTetramino.x + x, currentTetramino.y + y, false].color = currentTetramino.color;
+		field[currentTetramino.x + x, currentTetramino.y + y, false].ghost = false;
 	      }
 	if (deferredLock)
 	{

FieldRenderer.cs

@@ -45,6 +45,7 @@ public class Cell
     {
       public bool inUse = false;
       public TetraminoColor color = TetraminoColor.Cyan;
+      public bool ghost = false;
     }
 
     const string UI_FORMAT = "000000";
@@ -154,6 +155,7 @@ public void CopyCommit()
 	  {
 	    committedCells[x, y].inUse = shownCells[x, y].inUse;
 	    committedCells[x, y].color = shownCells[x, y].color;
+	    committedCells[x, y].ghost = shownCells[x, y].ghost;
 	  }
     }
 
@@ -189,6 +191,8 @@ protected override void DoDraw(FrameEventArgs e)
       DrawTetrion();
       GL.BindTexture(TextureTarget.Texture2D, ResourceCommons.Block);
       DrawBlock();
+      GL.BindTexture(TextureTarget.Texture2D, ResourceCommons.BlockGhost);
+      DrawGhostBlock();
       DrawOther();
     }
 
@@ -221,18 +225,35 @@ internal void DrawBlock()
 	    ResourceCommons.Blocks[committedCells[x, y].color].Draw();
 	    GL.PopMatrix();
 	  }
-          if (shownCells[x, y].inUse)
+          if (shownCells[x, y].inUse && !shownCells[x, y].ghost)
 	  {
-            Vector3 point = Vector3.Add(new Vector3((float)x, (float)y, -1f), position);
+	    Vector3 point = Vector3.Add(new Vector3((float)x, (float)y, -1f), position);
 	    GL.PushMatrix();
-            GL.Translate(point);
+	    GL.Translate(point);
 	    ResourceCommons.Blocks[shownCells[x, y].color].Draw();
 	    GL.PopMatrix();
 	  }
 	}
       GL.PopMatrix();
     }
 
+    internal void DrawGhostBlock()
+    {
+      GL.PushMatrix();
+      GL.Translate(Vector3.Add(position, tetrionBlock));
+      for (int x = 0; x < width; x++)
+        for (int y = 0; y < height; y++)
+          if (shownCells[x, y].inUse && shownCells[x, y].ghost)
+	  {
+	    Vector3 point = Vector3.Add(new Vector3((float)x, (float)y, -1f), position);
+	    GL.PushMatrix();
+	    GL.Translate(point);
+	    ResourceCommons.Blocks[shownCells[x, y].color].Draw();
+	    GL.PopMatrix();
+	  }
+      GL.PopMatrix();
+    }
+
     internal void DrawOther()
     {
       if (IsGameOver)
@@ -242,7 +263,6 @@ internal void DrawOther()
 	GL.Translate(Vector3.Add(position, new Vector3(400f, 250f, 0f)));
 	ResourceCommons.LiberationSans.Print("Game Over", QFontAlignment.Centre);
 	QFont.End();
-	GL.Disable(EnableCap.Blend);
 	GL.PopMatrix();
       }
     }

InterleavedFieldManager.cs

@@ -94,8 +94,11 @@ protected override void DoDraw(FrameEventArgs e)
 	  renderer[i].DrawTetrion();
 	GL.BindTexture(TextureTarget.Texture2D, ResourceCommons.Block);
 	for (int i = 0; i < (int)players; i++)
-	{
 	  renderer[i].DrawBlock();
+	GL.BindTexture(TextureTarget.Texture2D, ResourceCommons.BlockGhost);
+	for (int i = 0; i < (int)players; i++)
+	{
+	  renderer[i].DrawGhostBlock();
 	  renderer[i].DrawOther();
 	}
       }

Program.cs

@@ -89,6 +89,7 @@ protected override void OnRenderFrame(FrameEventArgs e)
       GL.Enable(EnableCap.Texture2D);
       GL.Enable(EnableCap.DepthTest);
       GL.Enable(EnableCap.CullFace);
+      GL.Enable(EnableCap.Blend);
 
       GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
 

ResourceCommons.cs

@@ -52,6 +52,7 @@ static class ResourceCommons
 
     public static Texture TetrionTexture;
     public static Texture Block;
+    public static Texture BlockGhost;
     public static Dictionary<TetraminoColor, MeshRenderer> Blocks = new Dictionary<TetraminoColor, MeshRenderer>();
     public static Dictionary<TetraminoType, Bitmap> BlockOverlays = new Dictionary<TetraminoType, Bitmap>();
     public static MeshRenderer Tetrion;
@@ -76,6 +77,7 @@ public static void Load()
       BlockOverlays.Add(TetraminoType.T, new Bitmap(Path.Combine(Path.Combine(Path.Combine(".", RESOURCE_DIR), TEXTURES_DIR), "T.png")));
       LoadTexture(Path.Combine(Path.Combine(Path.Combine(".", RESOURCE_DIR), TEXTURES_DIR), "tetrion.png"), out TetrionTexture);
       LoadTexture(Path.Combine(Path.Combine(Path.Combine(".", RESOURCE_DIR), TEXTURES_DIR), "block.png"), out Block);
+      LoadTexture(Path.Combine(Path.Combine(Path.Combine(".", RESOURCE_DIR), TEXTURES_DIR), "blockGhost.png"), out BlockGhost);
       PanelBase = new Bitmap(Path.Combine(Path.Combine(Path.Combine(".", RESOURCE_DIR), TEXTURES_DIR), "panel.png"));
       using (Stream tmp = File.Open(Path.Combine(Path.Combine(Path.Combine(".", RESOURCE_DIR), MODELS_DIR), "blockCyan.xml"), FileMode.Open))
 	Blocks.Add(TetraminoColor.Cyan, new MeshRenderer((Mesh)modelSerializer.Deserialize(tmp)));

Tetramino.cs

@@ -48,6 +48,7 @@ struct Tetramino
     public TetraminoRotation rotation;
     public int x;
     public int y;
+    public bool ghost;
   }
 
   class TetraminoIgnoreColorPosition : EqualityComparer<Tetramino>
@@ -91,7 +92,8 @@ class TetraminoManager
 	  color = TetraminoColor.Cyan,
 	  rotation = TetraminoRotation.Left,
 	  x = 3,
-	  y = 18
+	  y = 18,
+	  ghost = false
 	}
       },
       {
@@ -102,7 +104,8 @@ class TetraminoManager
 	  color = TetraminoColor.Yellow,
 	  rotation = TetraminoRotation.Up,
 	  x = 4,
-	  y = 18
+	  y = 18,
+	  ghost = false
 	}
       },
       {
@@ -113,7 +116,8 @@ class TetraminoManager
 	  color = TetraminoColor.Purple,
 	  rotation = TetraminoRotation.Right,
 	  x = 4,
-	  y = 17
+	  y = 17,
+	  ghost = false
 	}
       },
       {
@@ -124,7 +128,8 @@ class TetraminoManager
 	  color = TetraminoColor.Green,
 	  rotation = TetraminoRotation.Right,
 	  x = 4,
-	  y = 17
+	  y = 17,
+	  ghost = false
 	}
       },
       {
@@ -135,7 +140,8 @@ class TetraminoManager
 	  color = TetraminoColor.Red,
 	  rotation = TetraminoRotation.Right,
 	  x = 4,
-	  y = 17
+	  y = 17,
+	  ghost = false
 	}
       },
       {
@@ -146,7 +152,8 @@ class TetraminoManager
 	  color = TetraminoColor.Orange,
 	  rotation = TetraminoRotation.Right,
 	  x = 4,
-	  y = 17
+	  y = 17,
+	  ghost = false
 	}
       },
       {
@@ -157,7 +164,8 @@ class TetraminoManager
 	  color = TetraminoColor.Blue,
 	  rotation = TetraminoRotation.Right,
 	  x = 4,
-	  y = 17
+	  y = 17,
+	  ghost = false
 	}
       }
     };