ATCS/src/com/gpl/rpg/atcontentstudio/model/tools/resoptimizer/SpritesheetId.java

package com.gpl.rpg.atcontentstudio.model.tools.resoptimizer;

import java.util.LinkedHashMap;
import java.util.Map;

public class SpritesheetId {
	static Map<String, SpritesheetId> instancesCache = new LinkedHashMap<String, SpritesheetId>(); 

	String tileset;
	int offset;

	static SpritesheetId getInstance(String id) {
		String[] values = id.split(":");
		return getInstance(values[0], Integer.parseInt(values[1]));
	}

	static SpritesheetId getInstance(String tilesetId, int offset) {
		if (!instancesCache.containsKey(toStringID(tilesetId, offset))) {
			SpritesheetId instance = new SpritesheetId(tilesetId, offset);
			instancesCache.put(instance.toStringID(), instance);
		}
		return instancesCache.get(toStringID(tilesetId, offset));
	}

	private SpritesheetId(String tileset, int offset) {
		this.tileset = tileset;
		this.offset = offset;
	}

	public String toStringID() {
		return toStringID(tileset, offset);
	}

	static String toStringID(String tileset, int offset) {
		return tileset+":"+Integer.toString(offset);
	}

}