88 lines
2.3 KiB
C#
88 lines
2.3 KiB
C#
#region Copyright & License Information
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/*
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* Copyright 2007-2011 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 COPYING.
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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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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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var terrainPalette = wr.Palette("terrain").Index;
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var vertices = new Vertex[4 * map.Bounds.Height * map.Bounds.Width];
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int nv = 0;
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for (var j = map.Bounds.Top; j < map.Bounds.Bottom; j++)
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for (var i = map.Bounds.Left; i < map.Bounds.Right; i++)
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{
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var tile = wr.Theater.TileSprite(map.MapTiles.Value[i, j]);
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Util.FastCreateQuad(vertices, Game.CellSize * new float2(i, j), tile, terrainPalette, nv, tile.size);
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nv += 4;
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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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}
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public void Draw(WorldRenderer wr, Viewport viewport)
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{
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int verticesPerRow = 4*map.Bounds.Width;
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int visibleRows = (int)(Game.Renderer.Resolution.Height * 1f / Game.CellSize / viewport.Zoom + 2);
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int firstRow = (int)(viewport.Location.Y * 1f / Game.CellSize - map.Bounds.Top);
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int lastRow = firstRow + visibleRows;
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if (lastRow < 0 || firstRow > map.Bounds.Height)
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return;
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if (world.VisibleBounds.HasValue)
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{
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var r = world.VisibleBounds.Value;
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if (firstRow < r.Top - map.Bounds.Top)
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firstRow = r.Top - map.Bounds.Top;
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if (firstRow > r.Bottom - map.Bounds.Top)
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firstRow = r.Bottom - map.Bounds.Top;
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}
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// Sanity checking
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if (firstRow < 0)
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firstRow = 0;
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if (lastRow > map.Bounds.Height)
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lastRow = map.Bounds.Height;
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if (lastRow < firstRow)
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lastRow = firstRow;
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Game.Renderer.WorldSpriteRenderer.DrawVertexBuffer(
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vertexBuffer, verticesPerRow * firstRow, verticesPerRow * (lastRow - firstRow),
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PrimitiveType.QuadList, wr.Theater.Sheet);
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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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