[NEW] Implementada pausa

[FIX] Corregit un segon arranc de partida
[NEW] Afegida controller:keypressed

data/game.lua

@@ -122,6 +122,8 @@ function game_exit()
 end
 
 function game_init(menu)
+    stage= 1
+    stage_loaded = 0
 -- print("GAME INIT")
     actors={}
     
@@ -282,6 +284,10 @@ function update_game()
     
     score.draw()
     
+    if controller:check("ESC") then
+        states:executar("pause", true)
+    end
+    
     if DEBUG then
         special_keys()
         debug_info()