diff --git a/engine/system/physics.ts b/engine/system/physics.ts
index ce42069..41d13ba 100644
--- a/engine/system/physics.ts
+++ b/engine/system/physics.ts
@@ -74,6 +74,7 @@ export function createCollider(
 			break;
 		}
 		case POLYGON: {
+			// TODO
 			break;
 		}
 	}
@@ -144,6 +145,7 @@ function collideWithCirle(
 	other: Collider,
 ) {
 	collision.cid = cid;
+	// TODO
 }
 
 function collideWithRect(
@@ -173,6 +175,7 @@ function collideWithPolygon(
 	other: Collider,
 ) {
 	collision.cid = cid;
+	// TODO
 }
 
 const circleCollide: Array<Collide> = [
@@ -288,13 +291,14 @@ export function moveAndSlide(
 		if (time === -Infinity) {
 			continue; // TODO
 		}
-		const dot = getDotProduct(velocity, collision.normal);
-		const ts = Math.min(0, time - 0.001);
-		const tsx = velocity.x * ts;
-		const tsy = velocity.y * ts;
-		const rt = 1 - time;
 
-		velocity.x -= collision.normal.x * dot * rt + tsx;
-		velocity.y -= collision.normal.y * dot * rt + tsy;
+		const ts = Math.min(0, time - 0.001);
+		velocity.x += velocity.x * ts;
+		velocity.y += velocity.y * ts;
+
+		const dot = getDotProduct(velocity, collision.normal);
+		const rt = 1 - time + 0.001;
+		velocity.x -= collision.normal.x * dot * rt;
+		velocity.y -= collision.normal.y * dot * rt;
 	}
 }
diff --git a/game/entities/hero/entity.ts b/game/entities/hero/entity.ts
index de1ae9a..c90c524 100644
--- a/game/entities/hero/entity.ts
+++ b/game/entities/hero/entity.ts
@@ -23,7 +23,7 @@ import {
 import { viewport } from "#/engine/Viewport.ts";
 import charIdle from "#/game/assets/char-idle.png";
 
-const speed = 0.05;
+const speed = 0.1;
 const idleSrc = await defineSpriteSheet(charIdle, 2, 4);
 
 const process = defineEntity("hero", {
diff --git a/game/scenes/testScene/data.json b/game/scenes/testScene/data.json
index 8396e84..764bc27 100644
--- a/game/scenes/testScene/data.json
+++ b/game/scenes/testScene/data.json
@@ -17,7 +17,7 @@
 			"init": {
 				"position": {
 					"x": 24,
-					"y": 41
+					"y": 40
 				}
 			}
 		},