简单贪吃蛇

来源：互联网发布：我国外汇储备数据编辑：程序博客网时间：2024/04/30 00:49

public void showsnake(graphics g){//globeinfo.snake为vector类型
        int num=globeinfo.snake.size();

        int left=(w-grid*globeinfo.gridxnum)/2;
        int top=h-grid*globeinfo.gridynum-space*2;
        g.setcolor(0,0,255);
        for(int i=0;i<num;i++){
            point point=(point)globeinfo.snake.elementat(i);
            if(point.x>=0&&point.y>=0){
                int l=left+point.x*grid;
                int t=top+point.y*grid;
                g.fillrect(l, t, grid, grid);
            }
        }
    }
    public void movesnake(){//point 为一个格式点的数据结构(x,y)
        point pointtail=(point)globeinfo.snake.elementat(0);
        point pointhead=(point)globeinfo.snake.elementat(globeinfo.snake.size()-1);
        point point=new point(-1, -1);
        if(direct.right){
            point.x=pointhead.x+1;
            point.y=pointhead.y;
            if(point.x>=globeinfo.gridxnum)
                end=true;
        } else if(direct.left){
            point.x=pointhead.x-1;
            point.y=pointhead.y;
            if(point.x<0)
                end=true;
        } else if(direct.up){
            point.x=pointhead.x;
            point.y=pointhead.y-1;
            if(point.y<0)
                end=true;
        } else if(direct.down){
            point.x=pointhead.x;
            point.y=pointhead.y+1;
            if(point.y>=globeinfo.gridynum)
                end=true;
        }

        for(int i=0;i<globeinfo.snake.size();i++){
            point pointother=(point)globeinfo.snake.elementat(i);
            if(pointother.x==point.x&&pointother.y==point.y){
                end=true;
                break;
            }
        }

        if(end==false&&globeinfo.snake.size()>0){
            if(point.x==eatx && point.y==eaty){
                eat=false;
                show=true;
                globeinfo.snake.addelement(point);
                globeinfo.money+=100;
                num++;
                if(num>=globeinfo.levelnum)
                    end=true;
            } else{
                globeinfo.snake.removeelementat(0);
                globeinfo.snake.addelement(point);
            }
        } else{
            timer.cancel();
        }
        servicerepaints();
    }
    public void randomeat(){
        if(eat==false){
            random rand=new random();
            boolean product=false;
            while(product==false){
                int x=rand.nextint(globeinfo.gridxnum);
                int y=rand.nextint(globeinfo.gridynum);
                int i;
                for(i=0;i<globeinfo.snake.size();i++){
                    point point=(point)globeinfo.snake.elementat(i);
                    if(point.x==x&&point.y==y)
                        break;
                }
                if(i==globeinfo.snake.size()){
                    eatx=x;
                    eaty=y;
                    eat=true;
                    product=true;
                }
            }
        }
    }