78 lines
1.5 KiB
JavaScript
78 lines
1.5 KiB
JavaScript
const MAX_SPEED = 3;
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const MAX_JUMP = 2;
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const G = 10;
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const MAX_FRAME = 9;
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class Box {
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constructor() {
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this.size = 0.2;
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// Animate can be -1, 0, or 1
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this.animate = 0;
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this.frameNumber = 0;
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this.reset();
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}
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reset() {
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// All these values are in percentage of the screen
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this.x = 0.5;
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this.y = 0;
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this.speedX = 0;
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this.speedY = 0;
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this.jumpCounter = MAX_JUMP;
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}
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update(time = 0.02) {
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if (this.animate !== 0) {
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this.frameNumber += this.animate;
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if (this.frameNumber === MAX_FRAME) {
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this.animate = -1;
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} else if (this.frameNumber === 0) {
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this.animate = 0;
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}
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}
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this.speedX *= 0.95;
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this.speedY -= G * time;
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this.speedY = Math.max(this.speedY, -MAX_SPEED);
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this.x += this.speedX * time;
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this.y += this.speedY * time;
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}
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collide(y) {
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this.y = y;
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this.speedX = 0;
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this.speedY = 0;
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this.jumpCounter = MAX_JUMP;
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}
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jump(_x, _y) {
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// Put x between -1 and 1
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let x = (_x - this.x) * 2;
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let y = _y;
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if (this.jumpCounter == MAX_JUMP) {
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// Trigger animation
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this.animate = 1;
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}
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if (this.jumpCounter > 0) {
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this.jumpCounter--;
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this.speedX = MAX_SPEED * x * 0.8;
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this.speedY = MAX_SPEED;
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}
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}
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}
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Box.texture = new Image();
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Box.texture.src = "img/griezmann.png"
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