zbuf.java

java写的2.5D忍者游戏..涉及到深度缓冲技术...可控制玩家攻击,和npc的AI,碰撞等等

import javax.microedition.lcdui.Graphics;

public class ZBuf 
{
	int[][] z;
	public ZBuf()
	{
		z = new int[25][2];
		for (int i = 0; i < z.length ;i++)
		{
			z[i][0] = i;
		}
	}
	public void upData(MC mc)
	{
		for (int i = 0; i <z.length ;i++)
		{
			if (z[i][0] == 0)
			{
				z[i][1] = mc.pl .z ;
			}
			else if (z[i][0] <= 20)
			{
				if (mc.nm .npc [z[i][0]-1] != null)
				{
					z[i][1] = mc.nm .npc [z[i][0]-1].z; 
				}
				else
				{
					z[i][1] = -1;
				}
			}
			else if (z[i][0] == 21)
			{
				z[i][1] = 123; 
			}
			else if (z[i][0] == 22)
			{
				z[i][1] = 110;
			}
			else if (z[i][0] == 23)
			{
				z[i][1] = 103;
			}
		}
		
		
		int t;
		for (int i = 0; i < z.length -1;i++)
		{
			for (int j = i + 1;j <z.length ;j++)
			{
				if (z[i][1] > z[j][1])
				{
					t = z[i][0];
					z[i][0] = z[j][0];
					z[j][0] = t;
					
					t = z[i][1];
					z[i][1] = z[j][1];
					z[j][1] = t;
				}
			}
		}
	}
	public void render(Graphics g,MC mc)
	{
		for (int i = 0;i <z.length ;i++)
		{
			if (z[i][0] == 0)
			{
				g.drawImage( mc.yin ,mc.pl .x -17 - mc.cx,mc.pl .z - 6 - mc.cy,0);
			}
			else if (z[i][0] <= 20)  //NPC的影子
			{
				if (mc.nm .npc [z[i][0]-1] != null)
				{
					g.drawImage( mc.yin ,mc.nm .npc [z[i][0]-1].x - 17 - mc.cx ,mc.nm .npc [z[i][0] - 1].z -6 - mc.cy ,0);
				}
			}
		}
		for (int i = 0;i < z.length ;i ++)
		{
			if (z[i][0] == 0)
			{
				mc.pl.render( g,mc.cx,mc.cy );
			}
			else if (z[i][0] <= 20)
			{
				if (mc.nm .npc [z[i][0] - 1] != null)
				{
					mc.nm .render( z[i][0] - 1,g,mc.cx ,mc.cy );
				}
			}
			else if (z[i][0] == 21)
			{
				mc.bg .render2( g,mc.cx ,mc.cy );
			}
			else if (z[i][0] == 22)
			{
				mc.bg .render3( g,mc.cx ,mc.cy );
			}
			else if (z[i][0] == 23)
			{
				mc.bg .render4( g,mc.cx ,mc.cy );
			}
		}
		
	}
}