Find Barrel Blocks by BoundingBox

src/com/dre/brewery/utility/BoundingBox.java

@@ -0,0 +1,64 @@
+package com.dre.brewery.utility;
+
+import org.bukkit.Location;
+import org.bukkit.block.Block;
+
+public class BoundingBox {
+
+	private final int x1;
+	private final int y1;
+	private final int z1;
+	private final int x2;
+	private final int y2;
+	private final int z2;
+
+	public BoundingBox(int x1, int y1, int z1, int x2, int y2, int z2) {
+		this.x1 = Math.min(x1, x2);
+		this.y1 = Math.min(y1, y2);
+		this.z1 = Math.min(z1, z2);
+		this.x2 = Math.max(x2, x1);
+		this.y2 = Math.max(y2, y1);
+		this.z2 = Math.max(z2, z1);
+	}
+
+	public boolean contains(int x, int y, int z) {
+		return (x >= x1 && x <= x2) && (y >= y1 && y <= y2) && (z >= z1 && z <= z2);
+	}
+
+	public boolean contains(Location loc) {
+		return contains(loc.getBlockX(), loc.getBlockY(), loc.getBlockZ());
+	}
+
+	public boolean contains(Block block) {
+		return contains(block.getX(), block.getY(), block.getZ());
+	}
+
+	public int area() {
+		return (x2 - x1 + 1) * (y2 - y1 + 1) * (z2 - z1 + 1);
+	}
+
+	public String serialize() {
+		return x1 + "," + y1 + "," + z1 + "," + x2 + "," + y2 + "," + z2;
+	}
+
+	public static BoundingBox fromPoints(int[] locations) {
+		if (locations.length % 3 != 0) throw new IllegalArgumentException("Locations has to be pairs of three");
+
+		int length = locations.length / 3;
+		int minx = Integer.MAX_VALUE,
+			miny = Integer.MAX_VALUE,
+			minz = Integer.MAX_VALUE,
+			maxx = Integer.MIN_VALUE,
+			maxy = Integer.MIN_VALUE,
+			maxz = Integer.MIN_VALUE;
+		for (int i = 0; i < length; i++) {
+			minx = Math.min(locations[i], minx);
+			miny = Math.min(locations[i + 1], miny);
+			minz = Math.min(locations[i + 2], minz);
+			maxx = Math.max(locations[i], maxx);
+			maxy = Math.max(locations[i + 1], maxy);
+			maxz = Math.max(locations[i + 2], maxz);
+		}
+		return new BoundingBox(minx, miny, minz, maxx, maxy, maxz);
+	}
+}