chore: initialize the hitbox with the physics

birb/modules/world/actors/actor2D.lua

@@ -43,7 +43,6 @@ local Hitbox  = require("birb.modules.world.actors.utils.hitbox2D")
 function Actor2D:new(world, type, x, y, w, h, isSolid)
   self:init(world, type)
   self:initPhysics(x, y, 0, w, h, 0, isSolid)
-  self:initHitboxes()
   self:initTimers()
   self:initSprite()
   self:initKeys()

birb/modules/world/actors/actor3D.lua

@@ -45,7 +45,6 @@ local Boxes   = require(cwd .. "utils.boxes")
 function Actor3D:new(world, type, x, y, z, w, h, d, isSolid)
   self:init(world, type)
   self:initPhysics(x, y, z, w, h, d, isSolid)
-  self:initHitboxes()
   self:initTimers()
   self:initSprite()
   self.world:registerShape(self)

birb/modules/world/actors/mixins/physics.lua

@@ -21,6 +21,7 @@ function PhysicalActor:initPhysics(x, y, z, w, h, d, isSolid)
     self.zfrc = 0
 
     self:initGravity()
+    self:initHitboxes()
 
     self:setBounceFactor()
     self:setFilter()