我正在制作一个需要动态动画的应用程序(玩家移动)。我使用Canvas
对象来实现这个功能。我的第一个问题是,“Canvas
是否真的是处理这些动画的最佳方式?”, 第二个问题是,“如何将玩家重新绘制到Canvas
上?”以下是我的代码:
theGame.java:
package birdprograms.freezetag;
import android.app.Activity;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.os.Bundle;
import android.view.View;
public class theGame extends Activity {
players[] arr = {
new player(),
new player(),
new player(),
new player()
};
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(new myView(this));
}
public class myView extends View {
Paint paint = new Paint();
public myView(Context context) {
super(context);
paint.setColor(Color.YELLOW);
}
@Override
public void onDraw(final Canvas canvas) {
arr[0].update(true, true);
arr[0].draw(canvas, paint);
}
}
}
player.java
package birdprograms.freezetag;
import android.graphics.*;
public class player {
int y = 0;
int x = 0;
int vy = 5;
int vx = 5;
int height = y + 15;
int width = x + 15;
public void draw(Canvas canvas, Paint paint){
canvas.drawRect(x,y,width,height,paint);
}
public void update(boolean left, boolean top){
if(left){x += vx; width = x + 15;}
else{x -= vx; width = x + 15;}
if(top){y += vy; height = y + 15;}
else{y -= vy; height = y + 15;}
}
}