scenes/boost: add level assets

sonic-boost.love/scenes/subgame/sonic-boost/controller/background.lua

@@ -3,8 +3,10 @@ local Background = Object:extend()
 function Background:new(controller, levelname)
   self.controller = controller
   local filename    = self.controller.datas.background or "forest"
-  self.back1 = love.graphics.newImage("assets/levels/backgrounds/" .. filename .. "-back.png")
+  local backfolder  = "assets/levels/backgrounds/sideview/parallax"
-  self.back2 = love.graphics.newImage("assets/levels/backgrounds/" .. filename .. "-fore.png")
+  filename    = backfolder .. filename
+  self.back1  = love.graphics.newImage(filename .. "-back.png")
+  self.back2  = love.graphics.newImage(filename .. "-fore.png")
 end
 
 function Background:destroy()

sonic-boost.love/scenes/subgame/sonic-boost/controller/world.lua

@@ -286,11 +286,12 @@ end
 
 function World:loadAssets()
   self.textures = {}
-  self.textures.tiles   = love.graphics.newImage("assets/levels/normaltile.png")
+  local folder = "assets/backgrounds/sideview/"
-  self.textures.sptiles = love.graphics.newImage("assets/levels/specialtile.png")
+  self.textures.tiles   = love.graphics.newImage(folder .. "normaltile.png")
-  self.textures.borders = love.graphics.newImage("assets/levels/borders.png")
+  self.textures.sptiles = love.graphics.newImage(folder .. "specialtile.png")
+  self.textures.borders = love.graphics.newImage(folder .. "borders.png")
 
-  self.textures.rail    = love.graphics.newImage("assets/levels/rails/basic.png")
+  self.textures.rail    = love.graphics.newImage(folder .. "rails/basic.png")
 
   self.quads = {}
   self.quads.tiles    = {}