feat(world): add a 3D gfx object

gamecore/modules/world/actors/gfx3D.lua

@@ -0,0 +1,46 @@
+-- gfx.lua :: a basic 2D GFX.
+
+--[[
+  Copyright © 2019 Kazhnuz
+
+  Permission is hereby granted, free of charge, to any person obtaining a copy of
+  this software and associated documentation files (the "Software"), to deal in
+  the Software without restriction, including without limitation the rights to
+  use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+  the Software, and to permit persons to whom the Software is furnished to do so,
+  subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in all
+  copies or substantial portions of the Software.
+
+  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+  FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+  COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+  IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+]]
+
+local cwd   = (...):gsub('%.gfx3D$', '') .. "."
+local Actor3D = require(cwd .. "actor3D")
+local GFX     = Actor3D:extend()
+
+function GFX:new(world, x, y, z, spritename)
+  local width, height = world.scene.assets.sprites[spritename]:getDimensions()
+
+  GFX.super.new(self, world, "gfx", x - (width/2), y - (width/2), z - (height/2), width, width, height)
+  self:setSprite(spritename)
+  self:cloneSprite()
+
+  local duration = self.sprite.clone:getAnimationDuration()
+  self:addTimer("destroy", duration)
+  self.depth    = -100
+end
+
+function GFX:timerResponse(name)
+  if (name == "destroy") then
+    self:destroy()
+  end
+end
+
+return GFX