fix: simplify shadows handling

sonic-bluestreak.love/game/modules/world/actors/collisions/fakefloor.lua

@@ -0,0 +1,29 @@
+local Base = require "core.modules.world.actors.actor3D"
+local FakeFloor = Base:extend()
+
+function FakeFloor:new(world, x, y, z, w, h, d)
+  FakeFloor.super.new(self, world, "fakefloor", x, y, z, w, h, d, false)
+  self:setDebugColor(0,0,0)
+  self.boxes.Base(self, w, h, d, false)
+end
+
+function FakeFloor:update(dt)
+
+end
+
+function FakeFloor:draw()
+  local drawx, drawy, drawz = self.x, self.y, self.z
+  if (self.world.maptype == "shoot") then
+    drawx = drawx + math.floor(drawy/2)
+  end
+  self:drawStart()
+  if (self.box ~= nil) then
+    self.box:draw(drawx, drawy, drawz)
+  else
+    local x, y = math.floor(drawx), math.floor(drawy - drawz - self.d + (self.h/2))
+    self:drawSprite(x, y)
+  end
+  self:drawEnd()
+end
+
+return FakeFloor

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

@@ -13,6 +13,7 @@ Obj.collisions["wall"]      = require(cwd .. "collisions.wall")
 Obj.collisions["invisible"] = require(cwd .. "collisions.invisible")
 Obj.collisions["floor"]     = require(cwd .. "collisions.floor")
 Obj.collisions["textured"]  = require(cwd .. "collisions.textured")
+Obj.collisions["fakefloor"]  = require(cwd .. "collisions.fakefloor")
 
 Obj.index     = {}
 Obj.index[01] = Obj.Ring

sonic-bluestreak.love/game/modules/world/maps/shoot.lua

@@ -56,6 +56,9 @@ function ShootMap:loadCollisions()
     self.chunklist[chunkname]:spawnGrounds((i-1)*31*8)
     self.chunklist[chunkname]:spawnObjects((i-1)*31*8)
   end
+
+  local CHUNKSIZE = TILESIZE*8
+  self.world:newCollision("fakefloor", -CHUNKSIZE, 0, -48, self.width+CHUNKSIZE*2, 200, 48)
 end
 
 function ShootMap:loadLayout()

sonic-bluestreak.love/game/modules/world/maps/tools/chunk.lua

@@ -46,7 +46,7 @@ function Chunk:generateGround(basex)
   for i, ground in ipairs(self.grounds) do
     local x, y = ground.x, ground.y
     local w, h = ground.w, ground.h
-    self.map.world:newCollision("floor", basex+(x-1)*31, (y-1)*20, -48, 31*w, 20*h, 48)
+    self.map.world:newCollision("invisible", basex+(x-1)*31, (y-1)*20, -48, 31*w, 20*h, 48)
   end
 end