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我正在嘗試更改矩形的y位置,但是,每當我嘗試時,它將展開/ 垂直地取大於。形狀增大而不是移動 - Java(GUI小程序)
public class PlayerPaddle implements Paddle {
double yVelocity;
final double GRAVITY = 0.94;
//move up/down faster (if not accelerating = slow down)
boolean upAccel, downAccel;
//determines if player 1 or player 2 (on left or on right)
int player;
//position of actual paddle
int x;
double y;
Rectangle panel;
public PlayerPaddle(int player) {
upAccel = false;
downAccel = false;
y = 210; //not moving initially
yVelocity = 0;
if (player == 1) {
//left side
x = 20;
} else {
//right side
x = 660;
}
}
@Override
public void draw(Graphics g) {
//draw paddle
g.setColor(Color.WHITE);
g.fillRect(x, (int) y, 20, 80);
}
@Override
public void move() {
if (upAccel) {
yVelocity -= 2;
} else if (downAccel) {
yVelocity += 2;
} else if ((!upAccel) && (!downAccel)) {
yVelocity *= GRAVITY;
}
y += yVelocity; //changes y position of paddle
}
public void setUpAccel(boolean input) {
upAccel = input;
}
public void setDownAccel(boolean input) {
downAccel = input;
}
@Override
public int getY() {
return (int) y;
}
}
我想知道如何使矩形上下垂直移動。一個類似的問題只有一個答案,表示以前畫的矩形沒有被清除,結果正在擴大。但即使當我說g.clearRect(...)它仍然擴大,不動。
我是Swing和Awt的新手,但我真的很想學習。 感謝您的幫助。
感謝您的幫助:) – badProgrammer
哦,我的壞,只是做 – badProgrammer