Java Graphics2D仅在旋转0/360度时绘制
我试图制造一个旋转的敌人,只是向前移动。玩家表现得非常完美,但由于某种原因,只有当我将旋转设置为360或0时,敌人才会表现出来,即使x和y位置按照他们应该的方式移动Java Graphics2D仅在旋转0/360度时绘制,java,graphics2d,Java,Graphics2d,我试图制造一个旋转的敌人,只是向前移动。玩家表现得非常完美,但由于某种原因,只有当我将旋转设置为360或0时,敌人才会表现出来,即使x和y位置按照他们应该的方式移动 package Game; import java.awt.Color; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.Rectangle; public class Enemy extends Rectangle implements
package Game;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Rectangle;
public class Enemy extends Rectangle implements GameObject {
private int speed;
private double angle;
public Enemy(int x, int y, int w, int h, int speed, int angle) {
this.x = x;
this.y = y;
this.width = w;
this.height = h;
this.speed = speed;
this.angle = Math.toRadians(angle);
}
@Override
public void update(Engine g) {
this.x += (speed * (float) Math.cos(angle));
this.y += (speed * (float) Math.sin(angle));
System.out.println(this.x + " " + this.y);
}
@Override
public void render(Graphics g) {
Graphics2D g2d = (Graphics2D) g;
g2d.setColor(Color.red);
g2d.rotate(angle);
g2d.fill(this);
}
}
将渲染组件更改为
@Override
public void render(Graphics g) {
Graphics2D g2d = (Graphics2D) g;
g2d.setColor(Color.red);
g2d.rotate(this.angle);
g2d.fill(this);
g2d.draw(this);
this.render(g);
}
这是对
render
方法的递归调用-如果我没有忽略某些内容,那么这将导致StackOverflowError
(或者至少是其他奇怪的行为)。