4 files changed, 0 insertions, 203 deletions
diff --git a/src/math/circle.ts b/src/math/circle.ts
deleted file mode 100644
index f4e855a..0000000
--- a/src/math/circle.ts
+++ /dev/null
@@ -1,15 +0,0 @@
-import { Collidable } from './collision';
-import { Movement } from './line';
-import { Point } from './point';
-
-import { vec2 } from 'gl-matrix';
-
-export class Circle implements Collidable, Point {
-	private pointCollide = Point.prototype.collide;
-
-	constructor(public readonly p: vec2, public readonly r: number) {}
-
-	public collide(out: vec2, move: Movement, r: number): boolean {
-		return this.pointCollide(out, move, r + this.r);
-	}
-}
diff --git a/src/math/collision.ts b/src/math/collision.ts
deleted file mode 100644
index 3df811a..0000000
--- a/src/math/collision.ts
+++ /dev/null
@@ -1,7 +0,0 @@
-import { Movement } from './line';
-
-import { vec2 } from 'gl-matrix';
-
-export interface Collidable {
-	collide(out: vec2, move: Movement, r: number): boolean;
-}
diff --git a/src/math/line.ts b/src/math/line.ts
deleted file mode 100644
index db99035..0000000
--- a/src/math/line.ts
+++ /dev/null
@@ -1,141 +0,0 @@
-import { mat2, vec2 } from 'gl-matrix';
-import { Collidable } from './collision';
-
-const rot90 = mat2.fromValues(
-	0, 1,
-	-1, 0,
-);
-
-export function normal(out: vec2, a: vec2): vec2 {
-	return vec2.transformMat2(out, a, rot90);
-}
-
-export function crossz(a: vec2, b: vec2): number {
-	return a[0] * b[1] - a[1] * b[0];
-}
-
-export class Line {
-	constructor(
-		public readonly p: vec2,
-		public readonly v: vec2,
-	) {}
-
-	public getNormal(out: vec2): vec2 {
-		return normal(out, this.v);
-	}
-
-	public projectPointDistance(p2: vec2): number {
-		const v2 = vec2.sub(vec2.create(), p2, this.p);
-		return vec2.dot(this.v, v2);
-	}
-
-	public projectPoint(out: vec2, p2: vec2): vec2 {
-		const d = this.projectPointDistance(p2);
-		return vec2.scaleAndAdd(out, this.p, this.v, d);
-	}
-
-	public distancePoint(p2: vec2): number {
-		const v2 = vec2.sub(vec2.create(), p2, this.p);
-		return crossz(this.v, v2);
-	}
-
-	public intersectLine(out: vec2, l2: Line): vec2 {
-		const vp = vec2.sub(vec2.create(), l2.p, this.p);
-		const d = crossz(vp, this.v);
-		const d2 = d / crossz(this.v, l2.v);
-		return vec2.scaleAndAdd(out, l2.p, l2.v, d2);
-	}
-}
-
-export class Movement {
-	public readonly v: vec2;
-
-	constructor(
-		public readonly src: vec2,
-		public readonly dest: vec2,
-	) {
-		this.v = vec2.sub(vec2.create(), dest, src);
-	}
-
-	public intersectLine(out: vec2, l: Line): vec2 {
-		const vp = vec2.sub(vec2.create(), l.p, this.src);
-		const d = crossz(vp, this.v);
-		const d2 = d / crossz(this.v, l.v);
-		return vec2.scaleAndAdd(out, l.p, l.v, d2);
-	}
-
-	public passes(p: vec2): boolean {
-		const vp = vec2.sub(vec2.create(), p, this.src);
-		const d = vec2.dot(this.v, vp);
-		return d >= 0 && d <= vec2.sqrLen(this.v);
-	}
-
-	public toLineSegment(): LineSegment {
-		return LineSegment.fromPoints(this.src, this.dest);
-	}
-
-	public translate(t: vec2): Movement {
-		const src = vec2.add(vec2.create(), this.src, t);
-		const dest = vec2.add(vec2.create(), this.dest, t);
-		return new Movement(src, dest);
-	}
-}
-
-export class LineSegment extends Line implements Collidable {
-	public static fromPoints(p1: vec2, p2: vec2): LineSegment {
-		const d = vec2.dist(p1, p2);
-		const v = vec2.sub(vec2.create(), p2, p1);
-		vec2.scale(v, v, 1 / d);
-
-		return new LineSegment(p1, v, d);
-	}
-
-	constructor(
-		p: vec2,
-		v: vec2,
-		public readonly l: number,
-	) {
-		super(p, v);
-	}
-
-	public getP2(out: vec2): vec2 {
-		return vec2.scaleAndAdd(out, this.p, this.v, this.l);
-	}
-
-	public containsPoint(p2: vec2): boolean {
-		const d = this.projectPointDistance(p2);
-		return (d >= 0 && d <= this.l);
-	}
-
-	public collide(out: vec2, move: Movement, r: number): boolean {
-		if (this.distancePoint(move.src) < 0)
-			return false;
-
-		if (crossz(move.v, this.v) < 0)
-			return false;
-
-		const t = this.getNormal(vec2.create());
-		vec2.scale(t, t, -r);
-
-		const refMove = move.translate(t);
-
-		if (!this.collideRef(out, refMove))
-			return false;
-
-		vec2.sub(out, out, t);
-		return true;
-	}
-
-	private collideRef(out: vec2, move: Movement): boolean {
-		if (this.distancePoint(move.dest) >= 0)
-			return false;
-
-		const x = move.intersectLine(vec2.create(), this);
-		if (!this.containsPoint(x))
-			return false;
-
-		this.projectPoint(out, move.dest);
-
-		return true;
-	}
-}
diff --git a/src/math/point.ts b/src/math/point.ts
deleted file mode 100644
index 0865b8f..0000000
--- a/src/math/point.ts
+++ /dev/null
@@ -1,40 +0,0 @@
-import { Collidable } from './collision';
-import { Line, Movement, normal } from './line';
-
-import { vec2 } from 'gl-matrix';
-
-export class Point implements Collidable {
-	constructor(public readonly p: vec2) {}
-
-	public collide(out: vec2, move: Movement, r: number): boolean {
-		const moveLine = move.toLineSegment();
-
-		if (moveLine.projectPointDistance(this.p) < 0)
-			return false;
-
-		const d = moveLine.distancePoint(this.p) / r;
-		if (Math.abs(d) >= 1)
-			return false;
-
-		const e = Math.sqrt(1 - d * d);
-
-		const t = moveLine.getNormal(vec2.create());
-		vec2.scale(t, t, d);
-		vec2.scaleAndAdd(t, t, moveLine.v, e);
-
-		const tr = vec2.scale(vec2.create(), t, r);
-
-		const refMove = move.translate(tr);
-
-		if (vec2.sqrDist(this.p, move.src) > r * r && !refMove.passes(this.p))
-			return false;
-
-		normal(t, t);
-
-		const tang = new Line(this.p, t);
-		tang.projectPoint(out, refMove.dest);
-		vec2.sub(out, out, tr);
-
-		return true;
-	}
-}