From 9b75d41bea6ff789a87eb13ebe3f225a0a3eaecc Mon Sep 17 00:00:00 2001
From: Schluffe <schluffe@cachyos>
Date: Tue, 14 Apr 2026 21:39:59 +0200
Subject: [PATCH] WIP

---
 engine/system/physics.ts           | 10 +++++-----
 game/entities/portal/entity.ts     |  6 +++---
 game/entities/testEntity/entity.ts | 26 +++++++++++++++++++-------
 3 files changed, 27 insertions(+), 15 deletions(-)

diff --git a/engine/system/physics.ts b/engine/system/physics.ts
index 4dc41eb..1042d68 100644
--- a/engine/system/physics.ts
+++ b/engine/system/physics.ts
@@ -6,6 +6,7 @@ import {
 	createVector,
 	getDotProduct,
 	invScale,
+	scale,
 	type Vector,
 } from "#/engine/Vector.ts";
 
@@ -527,9 +528,9 @@ export function moveAndSlide(
 			break;
 		}
 
-		const scale = Math.max(0, time - 0.001);
-		position.x += velocity.x * delta * timeLeft * scale;
-		position.y += velocity.y * delta * timeLeft * scale;
+		const scalar = Math.max(0, time - 0.001) * delta * timeLeft;
+		position.x += velocity.x * scalar;
+		position.y += velocity.y * scalar;
 
 		const dot = getDotProduct(velocity, closest.normal);
 		velocity.x -= closest.normal.x * dot;
@@ -538,6 +539,5 @@ export function moveAndSlide(
 		timeLeft *= 1 - time;
 	}
 
-	velocity.x *= timeLeft;
-	velocity.y *= timeLeft;
+	scale(velocity, timeLeft);
 }
diff --git a/game/entities/portal/entity.ts b/game/entities/portal/entity.ts
index f526f6b..9126d74 100644
--- a/game/entities/portal/entity.ts
+++ b/game/entities/portal/entity.ts
@@ -10,11 +10,11 @@ import { createVector } from "#/engine/Vector.ts";
 import portal from "#/game/assets/portal.png";
 
 const portalSrc = await defineSpriteSheet(portal, 3, 1);
-const position = createVector();
 
 defineEntity("portal", {
-	position,
+	position: createVector(),
+	velocity: createVector(),
+	collider: createCollider(Shape.Circle, createCircle(8)),
 	sprite: createSprite(portalSrc, createVector(-8, -8)),
 	animation: createSpriteAnimation(400, 0),
-	collider: createCollider(Shape.Circle, createCircle(8)),
 });
diff --git a/game/entities/testEntity/entity.ts b/game/entities/testEntity/entity.ts
index b701ce5..737cf47 100644
--- a/game/entities/testEntity/entity.ts
+++ b/game/entities/testEntity/entity.ts
@@ -1,4 +1,5 @@
 import { defineEntity } from "#/engine/Entity.ts";
+import { createRect } from "#/engine/Rect.ts";
 import $ from "#/engine/Scene.ts";
 import {
 	createSpriteAnimation,
@@ -6,6 +7,11 @@ import {
 	type Sprite,
 	type SpriteAnimation,
 } from "#/engine/Sprite.ts";
+import {
+	type Collider,
+	createCollider,
+	Shape,
+} from "#/engine/system/physics.ts";
 import { createVector, type Vector } from "#/engine/Vector.ts";
 import { viewport } from "#/engine/Viewport.ts";
 import charIdle from "#/game/assets/char-idle.png";
@@ -40,10 +46,10 @@ const animations = {
 	walk: createSpriteAnimation(250, 2),
 };
 
-const position = createVector();
-
 const process = defineEntity<{
 	position: Vector;
+	velocity: Vector;
+	collider: Collider;
 	animation: SpriteAnimation;
 	animations: {
 		idle: SpriteAnimation;
@@ -56,7 +62,9 @@ const process = defineEntity<{
 	};
 	stuff: number;
 }>("testEntity", {
-	position,
+	position: createVector(),
+	velocity: createVector(),
+	collider: createCollider(Shape.Rect, createRect(16, 16)),
 	animation: animations.idle,
 	animations: animations,
 	sprite: sprites.idle,
@@ -65,17 +73,21 @@ const process = defineEntity<{
 });
 
 process((id, _delta) => {
-	const position = $<Vector>("position").get(id)!;
+	const position = $<Vector>("position").get(id)!.value;
+	const velocity = $<Vector>("velocity").get(id)!.value;
+	const collider = $<Collider>("collider").get(id)!.value;
 	const stuff = $<number>("stuff").get(id)!;
 	const sprite = $<Sprite>("sprite").get(id)!;
 	const animation = $<SpriteAnimation>("animation").get(id)!;
 
-	position.value.x += stuff.value * 0.5;
-	if (position.value.x > viewport.canvas.width - 16) {
+	velocity.x = stuff.value * 0.5;
+	position.x += velocity.x;
+
+	if (position.x + collider.offset.x > viewport.canvas.width - 16) {
 		stuff.value = -1;
 		animation.value = animations.walk;
 		sprite.value = sprites.walk;
-	} else if (position.value.x < 0) {
+	} else if (position.x + collider.offset.x < 0) {
 		stuff.value = 1;
 		animation.value = animations.idle;
 		sprite.value = sprites.idle;