revert "disable collision to fix pathfinding phasing through walls"

This reverts commit f48a6bf9aa.

src/game.js

@@ -1,5 +1,4 @@
 import { EventEmitter } from 'node:events'
-import Pathfind from './pathfind.js'
 
 export default class Game {
   tickRate = 30
@@ -11,23 +10,14 @@ export default class Game {
   #eventEmitter = new EventEmitter()
   #terrains = []
   #tickBudget = Math.floor(1000 / this.tickRate)
-  #waypointGraph = []
 
   get entities() { return this.#entities }
   get eventEmitter() { return this.#eventEmitter }
   get terrains() { return this.#terrains }
   get tickBudget() { return this.#tickBudget }
-  get waypointGraph() { return this.#waypointGraph }
 
   get unadjustedWaypoints() {
-    // const terrainAndEntities = this.entities.concat(this.terrains)
-    const terrainAndEntities = this.terrains
-    return terrainAndEntities.map((e) => e.unadjustedWaypoints).flat()
-  }
-
-  colliders() {
-    const terrainAndEntities = this.entities.concat(this.terrains)
-    return terrainAndEntities.map((e) => e.colliders).flat()
+    return this.terrains.map((t) => t.unadjustedWaypoints).concat(this.entities.map((e) => e.unadjustedWaypoints)).flat()
   }
 
   spawn_entity(entity) {
@@ -42,7 +32,6 @@ export default class Game {
 
   add_terrain(terrain) {
     this.#terrains.push(terrain)
-    this.#calculateWaypointGraph()
   }
 
   state() {
@@ -64,8 +53,4 @@ export default class Game {
     this.currentTick++
     this.eventEmitter.emit('tick')
   }
-
-  #calculateWaypointGraph() {
-    this.#waypointGraph = Pathfind.buildGraph(this.unadjustedWaypoints, this.colliders())
-  }
 }