这是我的代码。下一步如何对键盘按键的弹跳球产生影响。
float circleX = 0;
float circleY = 0;
float xSpeed = 2.5;
float ySpeed = 2;
void setup() {
size(500, 500);
}
void draw() {
background(0,200,0);
circleX += xSpeed;
if (circleX < 0 || circleX > width) {
xSpeed *= -1;
}
circleY += ySpeed;
if (circleY < 0 || circleY > height) {
ySpeed *= -1;
}
ellipse(circleX, circleY, 100, 100);
}
fill()
:
float circleX = 0;
float circleY = 0;
float xSpeed = 2.5;
float ySpeed = 2;
void setup() {
size(500, 500);
}
void changeColor() {
fill(random(255), random(255), random(255));
}
void draw() {
background(0,200,0);
circleX += xSpeed;
if (circleX < 0 || circleX > width) {
xSpeed *= -1;
changeColor();
}
circleY += ySpeed;
if (circleY < 0 || circleY > height) {
ySpeed *= -1;
changeColor();
}
ellipse(circleX, circleY, 100, 100);
}
按照您对 void changeColor 所做的操作,但它仍然不起作用,我的球只是显示为白色。