gamerender.java

来自「学习j2me写的,虽然在碰撞上处理的不好!但其中的技巧还是可以学习的1」· Java 代码 · 共 209 行

package Snowball;

import javax.microedition.lcdui.*;
import javax.microedition.lcdui.game.*;
import Creature.Creature;


public class GameRender
{
    private final static int GameWidth = 176; //游戏屏幕宽度
    private final static int GameHeight = 208; //游戏屏幕高度
    private int Width; //屏幕宽度
    private int Height; //屏幕高度
    private Graphics g; //图形对象
    private GameStatus gs; //游戏状态数据
    private GameCanvas gc; //游戏画板
    private GameImage gi; //游戏图片资源
    private ObjectManage om; //游戏对象管理器
        
    /** Creates a new instance of GameRender */
    public GameRender(Graphics g, GameCanvas gc, GameStatus gs, GameImage gi, ObjectManage om)
    {
        this.g = g;
        this.gc = gc;
        this.gs = gs;
        this.gi = gi;
        this.om = om;        
    }
   
     /**==============================**	
     **         整体绘画更新：Process()	 
     **==============================**/
    public void Process()
    {       
        if(gs.drawState==gs.LOGO)      //LOGO            
            logoPage(g);
        if(gs.drawState==gs.INDEX)      //首页
            indexPage(g); 
        if(gs.drawState == gs.GAME)       //游戏          
             drawGame();
        if(gs.drawState == gs.NEW_LEVEL){  //关卡                 
            levelPage(g);
            gs.Wait(1500);
        }
        if(gs.drawState == gs.HELP)       //帮助         
             helpPage(g);
        if(gs.drawState == gs.ABOUT)       //关于         
             aboutPage(g); 
        if(gs.drawState==gs.GAME_OVER) {   //GameOver
             GameOver(g);
             gs.Wait(1500);
        }
    }
    
     /**==============================**	
     **         绘画开始LOGO画面	 
     **==============================**/	
    private void logoPage(Graphics g) { 
        if(gs.logoState>=0 && gs.logoState < 16){        
            if(gi.yblogoImg!=null && gi.ybgameImg!=null){
                g.setColor(255, 255, 255);
                g.fillRect(0, 0, Width, Height);
                g.drawImage(gi.yblogoImg,60,48, Graphics.TOP | Graphics.LEFT);
                g.setClip(0, 152, 176/10*gs.logoState+5, 56);
                g.drawImage(gi.ybgameImg, 0, 152, Graphics.TOP | Graphics.LEFT);
                g.setClip(0,0, 176,208);
            }  
            gs.logoState++;
        }
        gc.flushGraphics();     
    }
    
    
    
    /**==============================**	
     **       绘制首页：indexPage	 
     **==============================**/	
    private void indexPage(Graphics g)
    {
       g.setFont(Font.getFont(Font.FACE_SYSTEM, Font.STYLE_BOLD  , Font.SIZE_LARGE));
       g.setColor(30,153,189);
       g.fillRect(0,0,Width,Height);
       g.drawImage(gi.IndexImg, 0, 0, Graphics.TOP | Graphics.LEFT);
       g.drawString(gs.menuStr1[gs.idxTmp],
               103,
               168,
            Graphics.HCENTER |  Graphics.TOP );
   
       gc.flushGraphics();   
    }
    
     /**==============================**	
     **       绘制首页：levelPage	 
     **==============================**/	
    private void levelPage(Graphics g)
    {
       g.setFont(Font.getFont(Font.FACE_SYSTEM, Font.STYLE_BOLD | Font.STYLE_ITALIC , Font.SIZE_LARGE));
       g.setColor(30,153,189);
       g.fillRect(0,0,Width,Height);    
       g.drawImage(gi.LevelImg, 0, 0, Graphics.TOP | Graphics.LEFT);   
       g.drawString(""+gs.gl.getGreatLevel(),73,84,Graphics.HCENTER |  Graphics.TOP );
       g.drawString(""+gs.gl.getShareLevel(),73,125,Graphics.HCENTER |  Graphics.TOP );
       gc.flushGraphics();   
    }
    
    
    
    /**==============================**	
     **       绘制首页：helpPage	 
     **==============================**/	
    private void helpPage(Graphics g)
    {
       g.setColor(0,0,255);
       g.fillRect(0,0,Width,Height);
       g.drawImage(gi.HelpImg,gs.HelpX, gs.HelpY, Graphics.TOP | Graphics.LEFT);  
       gc.flushGraphics();        
    }
    
     /**==============================**	
     **       绘制首页：helpPage	 
     **==============================**/	
    private void aboutPage(Graphics g)
    {
       g.setColor(0,0,255);
       g.fillRect(0,0,Width,Height);
       g.drawImage(gi.AboutImg, 0, 0, Graphics.TOP | Graphics.LEFT);  
       gc.flushGraphics();   
    }
    
    /**==============================**
     **        绘画游戏:drawGoods()
     **==============================**/
    private void drawGoods(Graphics g)
    {
        if(1 == gs.gp.GoodsType || 2 == gs.gp.GoodsType || 3 == gs.gp.GoodsType){
             g.drawImage(gi.GoodsImg[gs.gp.GoodsType - 1], gs.gp.GoodsX , gs.gp.GoodsY  , Graphics.TOP | Graphics.LEFT);  
        } 
        gc.flushGraphics();   
    }
    
    /**==============================**
     **        绘画游戏:GameOver()
     **==============================**/
    private void GameOver(Graphics g){
        g.drawImage(gi.GameOverImg, 0, 0, Graphics.TOP | Graphics.LEFT);  
        g.setColor(0xdd1100);               
        g.drawString("您的得分: "+gs.gp.Scores,48,180,Graphics.TOP | Graphics.LEFT);
        gc.flushGraphics();   
    }
    
    /**==============================**
     **        绘画游戏:drawGame
     **==============================**/
    private void drawGame()
    {
        Creature co = null;
        
        //清空屏幕
        g.setColor(0, 0, 255);
        g.fillRect(0, 0, Width, Height);
        
        //绘制背景
        g.drawImage(gi.Backgroud[gs.gl.getGreatLevel() - 1][gs.gl.getShareLevel() - 1], 0, 0, Graphics.TOP | Graphics.LEFT);
        
        //显示桢数
        g.setColor(255, 0, 0);
       // g.drawString(String.valueOf(gs.TickCount), 0, 0, Graphics.LEFT | Graphics.TOP);  
        g.drawString(String.valueOf(gs.gp.Scores), 0, 0, Graphics.LEFT | Graphics.TOP);  
        
        //生命显示
        g.drawImage(gi.LifeImg, 160, 2, Graphics.TOP | Graphics.RIGHT);
        g.drawString(String.valueOf(gs.gp.LifeNum), 168,2, Graphics.RIGHT | Graphics.TOP); 
             
        //绘制对象管理器里的对象
        co = (Creature)om.Search(co);            
        while(co != null)
        {   
            //判断方向
            if(co.DrawState){
                switch(co.WalkDir)
                {
                    case 0:
                        co.ImageL.setPosition(co.x, co.y - co.ImageL.getHeight());
                        co.ImageL.setFrame(co.Action);
                        co.ImageL.paint(g);                
                        break;
                    case 1:
                        co.ImageR.setPosition(co.x, co.y - co.ImageR.getHeight());
                        co.ImageR.setFrame(co.Action);
                        co.ImageR.paint(g);                                     
                        break;               
                }    
            }
            //检索下一个对象
            co = (Creature)om.Search(co);           
        }  
        
        //物品显示
        if(gs.gp.GoodsState){
             drawGoods(g);
        }
       
        
        //测试
        //g.drawString(String.valueOf(gs.gp.Action), gs.gp.x, gs.gp.y, Graphics.LEFT | Graphics.TOP);      
        gc.flushGraphics();
    }    
}