add vision

src/projectile.js

@@ -1,7 +1,7 @@
 import { Vector2 } from 'three'
+import Entity from './entity.js'
 import SAT from 'sat'
 import SATX from './satx.js'
-import Entity from './entity.js'
 
 export default class Projectile {
   id = `projectile-${Projectile.nextId()}`
@@ -13,8 +13,11 @@ export default class Projectile {
   memory = {}
   owner = null
   position = new Vector2()
-  radius = 5
+  radius = 0
   speed = 1000
+  team = null
+  visibleThroughTerrain = true
+  visionRange = 0
   visualRadius = null
 
   #after = null
@@ -56,6 +59,15 @@ export default class Projectile {
     this.game?.despawn(this)
   }
 
+  entitiesInVision() {
+    const entities = this.game?.entities
+    if (entities == null) { return }
+
+    const entitiesInVisionRange = entities.filter((it) => it.id != this.id && it.distanceTo(this.position) <= this.visionRange + it.radius)
+
+    return entitiesInVisionRange.concat([this]).map((it) => it.id)
+  }
+
   setPosition(vector) {
     this.position.copy(vector)
     this.#calculateBbox()
@@ -66,10 +78,19 @@ export default class Projectile {
     this.#checkStationaryCollisions()
     this.#checkIfArrived()
     if (this.#logic != null) {
-      this.#logic()
+      this.#logic(this)
     }
   }
 
+  projectilesInVision() {
+    const projectiles = this.game?.projectiles
+    if (projectiles == null) { return }
+
+    const projectilesInVisionRange = projectiles.filter((it) => this.position.distanceTo(it.position) <= this.visionRange + it.radius)
+
+    return projectilesInVisionRange.map((it) => it.id)
+  }
+
   #calculateBbox() {
     this.bbox[0] = this.position.y + this.radius
     this.bbox[1] = this.position.x + this.radius