我正在构建一些演示来比较物理引擎以制作实际的游戏。然而，我被困在 p5.js 上，因为我似乎找不到一个函数来检查一个精灵是否与另一个精灵碰撞，并且只有那个精灵（或精灵组）。有没有这个函数？我似乎无法在 p5play 上找到参考，只有碰撞/重叠功能，但我的不重叠，并且碰撞功能仅检查帧，我认为它不是特定的。
这是我的代码，用于调试目的：
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>weebloo</title>
<script defer src="lib/p5.min.js"></script>
<script defer src="lib/p5.sound.min.js"></script>
<script defer src="lib/p5play.js"></script>
<script defer src="lib/planck.min.js"></script>
<script defer src="lib/p5.input.js"></script>
<style>
html, body {
font-family: "Comic Sans MS", cursive, sans-serif;
padding: 0;
margin: 0;
}
canvas {
display: block;
}
</style>
</head>
<body>
<script src="index.js"></script>
</body>
</html>
let sprite;
let floor, wallLeft, wallRight, ceiling;
let bouncyFloor, slipperyFloor;
let jumpPower;
let agility = 2.5;
let jumps = 2;
function setup() {
createCanvas(window.innerWidth, window.innerHeight);
frameRate(60);
sprite = new Sprite(width / 2, height / 2, 30, 30);
sprite.rotationLock = true;
sprite.bounciness = 0.15;
floor = new Sprite(width * 0.5, height, width, 10, "s");
ceiling = new Sprite(width * 0.5, 0, width, 10, "s");
wallLeft = new Sprite(0, height * 0.5, 10, height, "s");
wallRight = new Sprite(width, height * 0.5, 10, height, "s");
bouncyFloor = new Sprite(width * 0.25, height * 0.75, 100, 10, "s");
bouncyFloor.bounciness = 1;
slipperyFloor = new Sprite(width * 0.75, height * 0.75, 100, 10, "s");
slipperyFloor.friction = 0;
world.gravity.y = 10;
jumpPower = world.gravity.y * 0.5;
}
function draw() {
background(255);
fill("rgba(0,0,0,0.7)");
textSize(16);
textAlign(LEFT);
text(`fps: ${int(getFrameRate())}`, 10, 20);
text(`xvel: ${Math.round(float(sprite.vel.x) * 10) / 10}`, 10, 36);
text(`yvel: ${Math.round(float(sprite.vel.y) * 10) / 10}`, 10, 52);
fill(0);
textAlign(CENTER);
text("bouncy", bouncyFloor.pos.x, height * 0.75 - 10);
text("slippery", slipperyFloor.pos.x, height * 0.75 - 10);
}
function keyPressed() {
if (keyCode === LEFT_ARROW) {
sprite.vel.x = sprite.vel.x - agility;
} else if (keyCode === RIGHT_ARROW) {
sprite.vel.x = sprite.vel.x + agility;
} else if (keyCode === DOWN_ARROW) {
sprite.vel.y = sprite.vel.y + jumpPower;
} else if (keyCode === UP_ARROW) {
if (jumps > 0) {
sprite.vel.y = sprite.vel.y - jumpPower;
jumps = jumps - 1;
} else {
if (sprite.overlap(floor) == true) { //
jumps = 2; //
sprite.vel.y = sprite.vel.y - jumpPower; // This goes through the floor? Why?
jumps = jumps - 1; //
} //
}
}
}
好吧，看来我使用了一些错误的功能。
我使用的代码位于 keyPressed() 事件监听器中。 固定代码位于draw()函数中（每帧运行），如下所示：
// floors is the group of all floor objects that restore jumps.
// jumps is used when the player presses UpArrow.
// maxJumps is the maximum number of jumps possible.
if (sprite.collide(floors)) {
jumps = maxJumps;
}
我建议使用 P5.play 的文档 要检测两个特定精灵是否发生碰撞，您需要做的是：
if (spriteA.colliding(spriteB) {
do things
}