duvidas com atalho de tecla

#-------------------------------------------------------------------------
class Scene_Map
#-------------------------------------------------------------------------
alias scene_map_added_rewrite_system_update_systems update_systems
#--------------------------------------------------------------------------
# * Update Systems
#--------------------------------------------------------------------------
# GM=HaLT: esse Script chama as seguintes funções quando a tecla for presionada
# mas lembre-se para funcionar você tem que apertar "F5" para ocultar a tela de chat para depois apertar o botão!

def update_systems

if Input.trigger?(Input::Letters["G"])# Exemplo Quando você apertar "G" Vai Chamar a tela de GUILD
if @box.active == false
if $painel_adm.active == false
open_guild
end
end
end

if Input.trigger?(Input::Letters["I"])# inventario
if @box.active == false
if $painel_adm.active == false
$equip_w.refresh;
if $equip_w.active == true;
$equip_w.refresh; $equip_w.visible = false; $equip_w.active = false;
$item_w.visible = false; $item_w.active = false; $item_w.refresh;
@janela_gold_w.visible = false; $janela_gold_w.refresh
else
if $equip_w.active == false;
$equip_w.refresh; $equip_w.visible = true; $equip_w.active = true;
$item_w.visible = true; $item_w.active = true; $item_w.refresh;
@janela_gold_w.visible = true; $janela_gold_w.refresh
end
end
end
end
end

if Input.trigger?(Input::Letters["S"])# status
if @box.active == false
if $painel_adm.active == false
if $status.active == true;
@status.refresh;@status.visible = false; @status.active = false
else
if $status.active == false;
@status.refresh;@status.visible = true; @status.active = true
end
end
end
end
end

if Input.trigger?(Input::Letters["H"])#Habiliade
if $painel_adm.active == false
if @box.active == false
if $skill.active == true;
$skill.refresh; $skill.visible = false; $skill.active = false
else
if $skill.active == false;
$skill.refresh; $skill.visible = true; $skill.active = true
end
end
end
end
end
if Input.trigger?(Input::Letters["Q"])# Quest
if $painel_adm.active == false
if @box.active == false
if @quest_list.active == true;
@quest_list.refresh; @quest_list.visible = false; @quest_list.active = false
else
if @quest_list.active == false;
@quest_list.refresh; @quest_list.visible = true; @quest_list.active = true
end
end
end
end
end

scene_map_added_rewrite_system_update_systems

end
end