implement TreeLayer

common/addons/config-tree/src/main/java/com/dfsek/terra/addons/tree/tree/TreeLayer.java

@@ -0,0 +1,55 @@
+package com.dfsek.terra.addons.tree.tree;
+
+import com.dfsek.terra.api.block.state.BlockState;
+import com.dfsek.terra.api.noise.NoiseSampler;
+import com.dfsek.terra.api.util.PopulationUtil;
+import com.dfsek.terra.api.util.Range;
+import com.dfsek.terra.api.util.collection.ProbabilityCollection;
+import com.dfsek.terra.api.vector.Vector2;
+import com.dfsek.terra.api.vector.Vector3;
+import com.dfsek.terra.api.world.Chunk;
+import com.dfsek.terra.api.world.Flora;
+import com.dfsek.terra.api.world.Tree;
+
+public class TreeLayer {
+    protected final double density;
+    protected final Range level;
+    protected final ProbabilityCollection<Tree> layer;
+    protected final NoiseSampler noise;
+
+    public TreeLayer(double density, Range level, ProbabilityCollection<Tree> layer, NoiseSampler noise) {
+        this.density = density;
+        this.level = level;
+        this.layer = layer;
+        this.noise = noise;
+    }
+
+    public NoiseSampler getNoise() {
+        return noise;
+    }
+
+    public double getDensity() {
+        return density;
+    }
+
+    public Range getLevel() {
+        return level;
+    }
+
+    public ProbabilityCollection<Tree> getLayer() {
+        return layer;
+    }
+
+    public void place(Chunk chunk, Vector2 coords) {
+        Tree item = layer.get(noise, coords.getX(), coords.getZ());
+        BlockState current;
+        int i = 0;
+        for(int ignored : level) {
+            current = chunk.getBlock((int) coords.getX(), level.getMax()-i, (int) coords.getZ());
+            if(item.getSpawnable().contains(current.getBlockType())) {
+                item.plant(new Vector3((int) coords.getX(), level.getMax()-i, (int) coords.getZ()), chunk.getWorld(), PopulationUtil.getRandom(chunk, coords.hashCode()));
+            }
+            i--;
+        }
+    }
+}