diff --git a/gamecore/modules/timers/init.lua b/gamecore/modules/timers/init.lua
index fb242d1..17bc9c2 100644
--- a/gamecore/modules/timers/init.lua
+++ b/gamecore/modules/timers/init.lua
@@ -32,15 +32,21 @@ function TimersManager:new(subject)
   self.time    = 0
 
   self.timers   = {}
+  self.switches = {}
 end
 
 -- UPDATE
 -- Update every timers
 
 function TimersManager:update(dt)
+  self.time = self.time + dt
+
   for k, timer in pairs(self.timers) do
     timer:update(dt)
   end
+
+  self:updateSwitches(dt)
+
 end
 
 -- TIMER FUNCTIONS
@@ -58,4 +64,35 @@ function TimersManager:timerResponse(timername)
   self.subject:timerResponse(timername)
 end
 
+-- SWITCH FUNCTIONS
+-- Handle switches
+
+function TimersManager:newSwitch(start, bools)
+  local newSwitch = {}
+  -- we add the data into a switch wrapper
+  newSwitch.bools = bools
+  newSwitch.start = self.time + start -- /!\ START IS RELATIVE TO CURRENT TIME
+  newSwitch.clear = newSwitch.start + 1
+
+  table.insert(self.switches, newSwitch)
+end
+
+function TimersManager:updateSwitches(dt)
+  for i, switch in ipairs(self.switches) do
+    if (self.time > switch.start) then
+      -- We test each boolean in the switch
+      for i, bool in ipairs(switch.bools) do
+        -- if it's nil, we set it to true
+        if self.subject[bool] == nil then
+          self.subject[bool] = true
+        else
+          -- if it's not nil, we reverse the boolean
+          self.subject[bool] = (self.subject[bool] == false)
+        end
+      end
+      table.remove(self.switches, i)
+    end
+  end
+end
+
 return TimersManager