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30 lines
1.7 KiB
C#
30 lines
1.7 KiB
C#
using Microsoft.Xna.Framework;
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using Microsoft.Xna.Framework.Graphics;
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namespace MLEM.Misc {
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public class AutoTiling {
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public static void DrawAutoTile(SpriteBatch batch, Vector2 pos, Texture2D texture, Rectangle textureRegion, ConnectsTo connectsTo, Color color) {
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var up = connectsTo(0, -1);
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var down = connectsTo(0, 1);
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var left = connectsTo(-1, 0);
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var right = connectsTo(1, 0);
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var xUl = up && left ? connectsTo(-1, -1) ? 0 : 4 : left ? 1 : up ? 3 : 2;
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var xUr = up && right ? connectsTo(1, -1) ? 0 : 4 : right ? 1 : up ? 3 : 2;
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var xDl = down && left ? connectsTo(-1, 1) ? 0 : 4 : left ? 1 : down ? 3 : 2;
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var xDr = down && right ? connectsTo(1, 1) ? 0 : 4 : right ? 1 : down ? 3 : 2;
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var (x, y) = pos;
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var (sizeX, sizeY) = textureRegion.Size;
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var (halfSizeX, halfSizeY) = new Point(sizeX / 2, sizeY / 2);
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batch.Draw(texture, new Vector2(x, y), new Rectangle(textureRegion.X + 0 + xUl * sizeX, textureRegion.Y + 0, halfSizeX, halfSizeY), color);
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batch.Draw(texture, new Vector2(x + 0.5F * sizeX, y), new Rectangle(textureRegion.X + halfSizeX + xUr * sizeX, textureRegion.Y + 0, halfSizeX, halfSizeY), color);
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batch.Draw(texture, new Vector2(x, y + 0.5F * sizeY), new Rectangle(textureRegion.X + xDl * sizeX, textureRegion.Y + halfSizeY, halfSizeX, halfSizeY), color);
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batch.Draw(texture, new Vector2(x + 0.5F * sizeX, y + 0.5F * sizeY), new Rectangle(textureRegion.X + halfSizeX + xDr * sizeX, textureRegion.Y + halfSizeY, halfSizeX, halfSizeY), color);
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}
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public delegate bool ConnectsTo(int xOff, int yOff);
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}
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} |