105 lines
3.5 KiB
C#
105 lines
3.5 KiB
C#
#region Copyright & License Information
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/*
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* Copyright 2007-2010 The OpenRA Developers (see AUTHORS)
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* This file is part of OpenRA, which is free software. It is made
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* available to you under the terms of the GNU General Public License
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* as published by the Free Software Foundation. For more information,
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* see LICENSE.
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*/
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#endregion
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using System;
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using System.Drawing;
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using OpenRA.FileFormats;
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using OpenRA.FileFormats.Graphics;
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using OpenRA.Traits;
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namespace OpenRA.Graphics
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{
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class TerrainRenderer
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{
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IVertexBuffer<Vertex> vertexBuffer;
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IIndexBuffer indexBuffer;
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Sheet terrainSheet;
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World world;
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Map map;
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public TerrainRenderer(World world, WorldRenderer wr)
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{
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this.world = world;
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this.map = world.Map;
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Size tileSize = new Size( Game.CellSize, Game.CellSize );
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var tileMapping = new Cache<TileReference<ushort,byte>, Sprite>(
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x => Game.modData.SheetBuilder.Add(world.TileSet.GetBytes(x), tileSize));
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Vertex[] vertices = new Vertex[4 * map.Height * map.Width];
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ushort[] indices = new ushort[6 * map.Height * map.Width];
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terrainSheet = tileMapping[map.MapTiles[map.TopLeft.X, map.TopLeft.Y]].sheet;
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int nv = 0;
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int ni = 0;
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for( int j = map.TopLeft.Y ; j < map.BottomRight.Y; j++ )
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for( int i = map.TopLeft.X ; i < map.BottomRight.X; i++ )
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{
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Sprite tile = tileMapping[map.MapTiles[i, j]];
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// TODO: The zero below should explicitly refer to the terrain palette, but this code is called
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// before the palettes are created. Therefore assumes that "terrain" is the first palette to be defined
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Util.FastCreateQuad(vertices, indices, Game.CellSize * new float2(i, j), tile, 0, nv, ni, tile.size);
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nv += 4;
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ni += 6;
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if (tileMapping[map.MapTiles[i, j]].sheet != terrainSheet)
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throw new InvalidOperationException("Terrain sprites span multiple sheets");
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}
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vertexBuffer = Game.Renderer.Device.CreateVertexBuffer( vertices.Length );
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vertexBuffer.SetData( vertices, nv );
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indexBuffer = Game.Renderer.Device.CreateIndexBuffer( indices.Length );
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indexBuffer.SetData( indices, ni );
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}
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public void Draw( WorldRenderer wr, Viewport viewport )
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{
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int indicesPerRow = map.Width * 6;
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int verticesPerRow = map.Width * 4;
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int visibleRows = (int)(viewport.Height * 1f / Game.CellSize + 2);
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int firstRow = (int)(viewport.Location.Y * 1f / Game.CellSize - map.YOffset);
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int lastRow = firstRow + visibleRows;
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if (lastRow < 0 || firstRow > map.Height)
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return;
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if (firstRow < 0) firstRow = 0;
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if (lastRow > map.Height) lastRow = map.Height;
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if (world.LocalPlayer != null && !world.LocalPlayer.Shroud.Disabled && world.LocalPlayer.Shroud.Bounds.HasValue)
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{
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var r = world.LocalPlayer.Shroud.Bounds.Value;
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if (firstRow < r.Top - map.YOffset)
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firstRow = r.Top - map.YOffset;
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if (firstRow > r.Bottom - map.YOffset)
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firstRow = r.Bottom - map.YOffset;
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}
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if( lastRow < firstRow ) lastRow = firstRow;
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Game.Renderer.SpriteShader.SetValue( "DiffuseTexture", terrainSheet.Texture );
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Game.Renderer.SpriteShader.Render(() =>
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Game.Renderer.DrawBatch(vertexBuffer, indexBuffer,
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new Range<int>(verticesPerRow * firstRow, verticesPerRow * lastRow),
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new Range<int>(indicesPerRow * firstRow, indicesPerRow * lastRow),
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PrimitiveType.TriangleList, Game.Renderer.SpriteShader));
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foreach (var r in world.WorldActor.TraitsImplementing<IRenderOverlay>())
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r.Render( wr );
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}
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}
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}
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