math/line: use center point for behind-wall check

Fixes collision in case of rounding errors.

1 files changed, 3 insertions, 3 deletions

diff --git a/src/math/line.ts b/src/math/line.ts
index d29bc76..28a636e 100644
--- a/src/math/line.ts
+++ b/src/math/line.ts
@@ -108,6 +108,9 @@ export class LineSegment extends Line implements Collidable {
 	}
 
 	public collide(out: vec2, move: Movement, r: number): boolean {
+		if (this.distancePoint(move.p1) < 0)
+			return false;
+
 		const t = this.getNormal(vec2.create());
 		vec2.scale(t, t, -r);
 
@@ -121,9 +124,6 @@ export class LineSegment extends Line implements Collidable {
 	}
 
 	private collideRef(out: vec2, move: Movement): boolean {
-		if (this.distancePoint(move.p1) < 0)
-			return false;
-
 		if (this.distancePoint(move.p2) >= 0)
 			return false;