Move with collision reacts along the contact normal: it travels to the surface, stays flush and slides the rest of the move along it with Coulomb friction (the mean of both colliders, a tile counts as 0.5), a circle now rolls over an edge instead of catching on it, pushed dynamic bodies move off along the normal, Move gains the outputs hit, normal x and normal y, an object without its own collider moves freely, and editor run and play share the same path through Solids; contact point and normal come from our own f64 geometry (contactBetween), because Rapier's castShape lands 3e-6 px inside the wall in f32 (#150)

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

src/runtime/systems/CollisionSystem.ts

@@ -2,7 +2,15 @@ import { isHandleEnabled } from '../../core/graph';
 import { shapesOverlap } from '../../core/properties/collider';
 import type { Entity } from '../Entity';
 import type { World } from '../World';
-import { bodyOf, type CollisionPair, type CollisionSource, isCollisionBody, partsOf, Solids } from './solids';
+import {
+  bodyOf,
+  type CollisionPair,
+  type CollisionSource,
+  isCollisionBody,
+  type MoveResult,
+  partsOf,
+  Solids,
+} from './solids';
 import type { System } from './System';
 
 /**
@@ -67,12 +75,7 @@ export class CollisionSystem implements System, CollisionSource {
     return false;
   }
 
-  moveAndSlide(
-    world: World,
-    entity: Entity,
-    dx: number,
-    dy: number,
-  ): { blockedX: boolean; blockedY: boolean } {
+  moveAndSlide(world: World, entity: Entity, dx: number, dy: number): MoveResult {
     return this.solids.moveAndSlide(world, entity, dx, dy);
   }
 }