add visualRadius

src/entity.js

@@ -13,11 +13,12 @@ export default class Entity {
   health = null
   height = 40
   maxHealth = 1
-  memory = {} // TODO: WARNING: currently only used for minions (code smell?)
+  memory = {}
   position = null
   radius = 0
   speed = 400
   team = Team.neutral
+  visualRadius = null
 
   #attacking = false
   #dest = null
@@ -39,6 +40,9 @@ export default class Entity {
     if (this.health == null) {
       this.health = this.maxHealth
     }
+    if (this.visualRadius == null) {
+      this.visualRadius = this.radius
+    }
   }
 
   get destination() { return this.#dest }
@@ -90,6 +94,7 @@ export default class Entity {
 
   castAction(slot, cursor, halt = false) {
     const ability = this.abilities[slot]
+    if (ability == null) { return }
 
     if (this.casting != null) {
       const abilityBeingCasted = this.casting.ability