115 lines
2.6 KiB
C#
115 lines
2.6 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using IjwFramework.Types;
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using OpenRa.Game.Graphics;
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namespace OpenRa.Game
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{
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class Shroud
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{
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bool[,] explored = new bool[128, 128];
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Sprite[] shadowBits = SpriteSheetBuilder.LoadAllSprites("shadow");
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Sprite[,] sprites = new Sprite[128, 128];
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bool dirty;
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public bool IsExplored(int2 xy)
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{
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return explored[ xy.X, xy.Y ];
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}
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public void Explore(Actor a)
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{
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foreach (var t in Game.FindTilesInCircle((1f / Game.CellSize * a.CenterLocation).ToInt2(), a.Info.Sight))
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explored[t.X, t.Y] = true;
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dirty = true;
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}
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static readonly byte[] ShroudTiles =
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{
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0xf,0xf,0xf,0xf,
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0xf,0xf,0xf,0xf,
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0xf,0xf,0xf,0xf,
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0xf,0xf,0xf,0xf,
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0,7,13,0,
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14,6,12,4,
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11,3,9,1,
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0,2,8,0,
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};
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static readonly byte[] ExtraShroudTiles =
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{
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46, 41, 42, 38,
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43, 45, 39, 35,
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40, 37, 44, 34,
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36, 33, 32, 47,
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};
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Sprite ChooseShroud(int i, int j)
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{
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// bits are for exploredness: left, right, up, down, self
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var v = 0;
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if (explored[i - 1, j]) v |= 1;
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if (explored[i + 1, j]) v |= 2;
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if (explored[i, j - 1]) v |= 4;
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if (explored[i, j + 1]) v |= 8;
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if (explored[i, j]) v |= 16;
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var x = ShroudTiles[v];
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if (x != 0)
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return shadowBits[x];
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// bits are for exploredness: TL, TR, BR, BL
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var u = 0;
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if (explored[i - 1, j - 1]) u |= 1;
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if (explored[i + 1, j - 1]) u |= 2;
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if (explored[i + 1, j + 1]) u |= 4;
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if (explored[i - 1, j + 1]) u |= 8;
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return shadowBits[ExtraShroudTiles[u]];
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}
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public void Draw(SpriteRenderer r)
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{
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if (dirty)
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{
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dirty = false;
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for (int j = 1; j < 127; j++)
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for (int i = 1; i < 127; i++)
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sprites[i, j] = ChooseShroud(i, j);
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}
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for (var j = 1; j < 127; j++)
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{
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var starti = 1;
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for (var i = 1; i < 127; i++)
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{
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if (sprites[i, j] == shadowBits[0x0f])
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continue;
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if (starti != i)
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{
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r.DrawSprite(sprites[starti,j],
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Game.CellSize * new float2(starti, j),
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PaletteType.Shroud,
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new float2(Game.CellSize * (i - starti), Game.CellSize));
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starti = i+1;
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}
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r.DrawSprite(sprites[i, j],
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Game.CellSize * new float2(i, j),
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PaletteType.Shroud);
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starti = i+1;
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}
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if (starti < 127)
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r.DrawSprite(sprites[starti, j],
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Game.CellSize * new float2(starti, j),
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PaletteType.Shroud,
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new float2(Game.CellSize * (127 - starti), Game.CellSize));
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}
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}
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}
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}
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