bubbles / files / src / physics / Vector2.ts

Vector2.ts

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`dcc4757f` 2026-04-09 Pavel Safronov	1	export class Vector2 {
	2	constructor(public x: number, public y: number) { }
	3
	4	static zero(): Vector2 {
	5	return new Vector2(0, 0);
	6	}
	7
	8	static from(x: number, y: number): Vector2 {
	9	return new Vector2(x, y);
	10	}
	11
	12	add(v: Vector2): Vector2 {
	13	return new Vector2(this.x + v.x, this.y + v.y);
	14	}
	15
	16	sub(v: Vector2): Vector2 {
	17	return new Vector2(this.x - v.x, this.y - v.y);
	18	}
	19
	20	scale(s: number): Vector2 {
	21	return new Vector2(this.x * s, this.y * s);
	22	}
	23
	24	dot(v: Vector2): number {
	25	return this.x * v.x + this.y * v.y;
	26	}
	27
	28	magnitude(): number {
	29	return Math.sqrt(this.x * this.x + this.y * this.y);
	30	}
	31
	32	normalize(): Vector2 {
	33	const m = this.magnitude();
	34	if (m === 0) return Vector2.zero();
	35	return this.scale(1 / m);
	36	}
	37
	38	clone(): Vector2 {
	39	return new Vector2(this.x, this.y);
	40	}
	41
	42	addMut(v: Vector2): this {
	43	this.x += v.x;
	44	this.y += v.y;
	45	return this;
	46	}
	47
	48	scaleMut(s: number): this {
	49	this.x *= s;
	50	this.y *= s;
	51	return this;
	52	}
	53	}