git-svn-id: svn://svn.ijw.co.nz/svn/OpenRa@1199 993157c7-ee19-0410-b2c4-bb4e9862e678

2007-07-13 13:06:41 +00:00
parent 0293544f89
commit 37b0d0cb57
11 changed files with 165 additions and 248 deletions
--- a/OpenRa.Game/TerrainRenderer.cs
+++ b/OpenRa.Game/TerrainRenderer.cs
@@ -0,0 +1,82 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using OpenRa.FileFormats;
+using BluntDirectX.Direct3D;
+using System.Drawing;
+using System.IO;
+
+namespace OpenRa.Game
+{
+	class TerrainRenderer
+	{
+		FvfVertexBuffer<Vertex> vertexBuffer;
+		IndexBuffer indexBuffer;
+		Sheet terrainSheet;
+		TileSet tileSet;
+
+		Renderer renderer;
+		Map map;
+
+		public TerrainRenderer(Renderer renderer, Map map, Package tilePackage)
+		{
+			this.renderer = renderer;
+			this.map = map;
+
+			tileSet = new TileSet(tilePackage, map.TileSuffix);
+
+			Dictionary<TileReference, SheetRectangle<Sheet>> tileMapping =
+				new Dictionary<TileReference, SheetRectangle<Sheet>>();
+
+			Size tileSize = new Size(24, 24);
+
+			List<Vertex> vertices = new List<Vertex>();
+			List<ushort> indices = new List<ushort>();
+
+			for (int j = 0; j < map.Height; j++)
+				for (int i = 0; i < map.Width; i++)
+				{
+					TileReference tileRef = map.MapTiles[i + map.XOffset, j + map.YOffset];
+					SheetRectangle<Sheet> tile;
+
+					if (!tileMapping.TryGetValue(tileRef, out tile))
+						tileMapping.Add(tileRef, tile = CoreSheetBuilder.Add(tileSet.GetBytes(tileRef), tileSize));
+
+					terrainSheet = tile.sheet;
+
+					Util.CreateQuad(vertices, indices, new PointF(24 * i, 24 * j), tile, 0);
+				}
+
+			vertexBuffer = new FvfVertexBuffer<Vertex>(renderer.Device, vertices.Count, Vertex.Format);
+			vertexBuffer.SetData(vertices.ToArray());
+
+			indexBuffer = new IndexBuffer(renderer.Device, indices.Count);
+			indexBuffer.SetData(indices.ToArray());
+		}
+
+		public void Draw( Size screenSize, PointF scrollPos )
+		{
+			int indicesPerRow = map.Width * 6;
+			int verticesPerRow = map.Width * 4;
+
+			int visibleRows = (int)(screenSize.Height / 24.0f + 2);
+
+			int firstRow = (int)(scrollPos.Y / 24.0f);
+			int lastRow = firstRow + visibleRows;
+
+			if (lastRow < 0 || firstRow > map.Height)
+				return;
+
+			if (firstRow < 0) firstRow = 0;
+			if (lastRow > map.Height) lastRow = map.Height;
+
+			renderer.DrawWithShader(ShaderQuality.Low, delegate
+			{
+				renderer.DrawBatch(vertexBuffer, indexBuffer, 
+					new Range<int>(verticesPerRow * firstRow, verticesPerRow * lastRow), 
+					new Range<int>(indicesPerRow * firstRow, indicesPerRow * lastRow), 
+					terrainSheet.Texture);
+			});
+		}
+	}
+}