improvement: get shoot map data from its zone file

sonic-bluestreak.love/datas/gamedata/maps/shoot/zones.lua

@@ -1,44 +1,37 @@
 return {
   ["forest"] = {
     name    = "Jade Forest",
-    borders = 0,
     tiles   = 0,
     background = "forest"
   },
   ["city"] ={
     name    = "Diamond Highway",
-    borders = 1,
     tiles   = 1,
     background = "city"
   },
   ["tunnel"] ={
     name    = "Peridot Tunnel",
-    borders = 2,
     tiles   = 2,
     background = "tunnel",
     music = nil
   },
   ["mountain"] ={
     name    = "Pearl Mountain",
-    borders = 3,
     tiles   = 3,
     background = "mountain"
   },
   ["hills"] ={
     name    = "Calcite Hills",
-    borders = 4,
     tiles   = 4,
     background = "hills"
   },
   ["bridge"] ={
     name    = "Carnelian Bridge",
-    borders = 5,
     tiles   = 5,
     background = "bridge"
   },
   ["castle"] ={
     name    = "Ametist Castle",
-    borders = 6,
     tiles   = 6,
     background = "castle",
     music = nil

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

@@ -10,7 +10,9 @@ function ShootMap:new(world, maptype, mapname)
   ShootMap.super.new(self, world)
 
   self:setPadding(0, 0, 0, 0)
-  self:generateTextures(5, mapname)
+  self.textureId = zoneDatas[mapname].tiles
+  self.background = zoneDatas[mapname].background
+  self:generateTextures(self.textureId, self.background)
 end
 
 function ShootMap:loadCollisions()