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79 lines
1.5 KiB
79 lines
1.5 KiB
package mightypork.rogue.world.map;
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import mightypork.rogue.world.tile.Tile;
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import mightypork.util.constraints.rect.Rect;
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import mightypork.util.constraints.rect.builders.TiledRect;
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import mightypork.util.constraints.rect.proxy.RectBound;
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import mightypork.util.math.noise.NoiseGen;
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/**
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* Context for tile rendering. Provides tile rect, surrounding tiles, rendered
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* tile and random noise values for position-static tile variation.
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*
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* @author MightyPork
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*/
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public final class TileRenderContext implements RectBound {
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private final MapAccess map;
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private final TiledRect tiler;
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private final NoiseGen noise;
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public int x, y;
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public TileRenderContext(MapAccess map, Rect drawArea)
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{
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this.map = map;
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this.tiler = drawArea.tiles(map.getWidth(), map.getHeight());
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this.noise = map.getNoiseGen();
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}
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/**
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* @return the rendered tile.
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*/
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public Tile getTile()
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{
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return map.getTile(x, y);
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}
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/**
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* Get a neighbor tile
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*
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* @param offsetX x offset (left-right)
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* @param offsetY y offset (up-down)
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* @return the tile at that position
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*/
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public Tile getAdjacentTile(int offsetX, int offsetY)
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{
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return map.getTile(x + offsetX, y + offsetY);
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}
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/**
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* Rect of the current tile to draw
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*/
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@Override
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public Rect getRect()
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{
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return tiler.tile(x, y).grow(0.01); // important to avoid gaps b/w tiles when scaled.
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}
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/**
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* @return per-coord noise value 0..1
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*/
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public double getTileNoise()
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{
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return noise.valueAt(x, y);
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}
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public void render()
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{
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map.getTile(x, y).render(this);
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}
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}
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