tilegroup.java

来自「monkeymahjongg,一个JME3D游戏的源代码」· Java 代码 · 共 69 行

package jmetest.monkeymahjongg.playground.model;

import java.util.Arrays;
import java.util.Collections;
import java.util.List;


public abstract class TileGroup {

	Tile tiles[] = new Tile[] { null, null, null, null };
	protected int refCount = 0;

	public TileGroup() {
		super();
	}

	protected boolean assignTo(Tile tile) {
		tile.setGroup( this );
		tiles[refCount] = tile;
		refCount++;
		return refCount < 4;
	}

	protected void remove(Tile tile) {
		for( int i=0; i<4; ++i )
		{
			if( tiles[i] == tile )
				tiles[i] = null;
		}
	}

	public Hint getHint() {
		Tile first = null;
		Tile second = null;
		for (int i = 0; i < 4; ++i) {
			if (tiles[i] != null) {
				if (first == null)
					first = tiles[i];
				else {
					second = tiles[i];
					break;
				}
			}
		}
	
		if (first != null && second != null)
		{
			if( !first.isBlocked() && !second.isBlocked() )
				return new Hint(first, second);
		}
			
		return null;
	}

	/* unnecessary, that's already done in Object.equals
        @Override
	public boolean equals(Object obj) {
		if (this == obj)
			return true;
		return false;
	}*/

	 
	public abstract String getTextureResource( Tile tile );

	public List<Tile> getTiles() {
		return Collections.unmodifiableList(Arrays.asList(tiles));
	} 
}