Snake.java

public class Snake {

    public int length = 2;
    public int direction =0;

    public int sX[] = new int[SnakeGameMain.WIDTH*SnakeGameMain.SCALE-1];
    public int sY[] = new int[SnakeGameMain.HEIGHT*SnakeGameMain.SCALE-1];

    public Snake(int x1, int y1, int x2, int y2){
        sX[0]=x1;
        sX[1]=x2;
        sY[0]=y1;
        sY[1]=y2;
    }

    public void move(){

        for(int l=length;l>0;l--){

            sX[l] = sX[l-1];
            sY[l] = sY[l-1];
        }

        //up
        if(direction == 0) sY[0]--;
        //down
        if(direction == 2) sY[0]++;
        //right
        if(direction == 1) sX[0]++;
        //left
        if(direction == 3) sX[0]--;

        if(sY[0]> SnakeGameMain.HEIGHT) sY[0]=0;
        if(sY[0]< 0) sY[0]=SnakeGameMain.HEIGHT-1;
        if(sX[0]> SnakeGameMain.WIDTH) sX[0]=0;
        if(sX[0]< 0) sX[0]=SnakeGameMain.WIDTH-1;

    }
}