examples/plateform: add basic sprite functions

examples/gameplay/plateform/actors/player.lua

@@ -3,7 +3,7 @@ local Player = Base:extend()
 
 function Player:new(world, x, y, id)
   Player.super.new(self, world, "player", x, y, 16, 24, true)
-  self.playerid = id
+  self:setSprite("player", 8, 12)
 end
 
 function Player:update(dt)
@@ -22,7 +22,17 @@ function Player:update(dt)
     self.xsp =  120
   end
 
+  self:setDirection(self.xsp)
+
   Player.super.update(self, dt)
 end
 
+function Player:setDirection(direction)
+  direction = direction or 0
+  if direction ~= 0 then
+    direction = utils.math.sign(direction)
+    self:setSpriteScallingX(direction)
+  end
+end
+
 return Player