feat(actors): add a floor collision

sonic-radiance.love/core/modules/world/actors/utils/boxes/parent.lua

@@ -37,7 +37,11 @@ function Box3D:new(owner, w, h, d, isVisible)
   self.shadowSources = {}
   self.needRedraw = false
 
-  self.isVisible  = isVisible or true
+  if (isVisible == nil) then
+    self.isVisible  = true
+  else
+    self.isVisible  = isVisible
+  end
 
   if (self.isVisible) then
     self:setTexture()

sonic-radiance.love/game/modules/world/actors/floor.lua

@@ -0,0 +1,14 @@
+local Base = require "core.modules.world.actors.actor3D"
+local Floor = Base:extend()
+
+function Floor:new(world, x, y, z, w, h, d)
+  Floor.super.new(self, world, "wall", x, y, z, w, h, d, true)
+  self:setDebugColor(0,0,0)
+  self.boxes.Base(self, w, h, d, false)
+end
+
+function Floor:update(dt)
+
+end
+
+return Floor

sonic-radiance.love/game/modules/world/actors/init.lua

@@ -10,5 +10,6 @@ Obj.index["player"]   = Obj.Player
 Obj.collisions = {}
 Obj.collisions["wall"]      = require(cwd .. "wall")
 Obj.collisions["invisible"] = require(cwd .. "invisible")
+Obj.collisions["floor"] = require(cwd .. "floor")
 
 return Obj