core/input: add a way to flush active keys

sonic-boost.love/core/input.lua

@@ -78,6 +78,17 @@ function InputManager:getKey(padkey)
   return key
 end
 
+function InputManager:flushKeys()
+  self.keys = {}
+  for k,v in pairs(self.data.keys) do
+    self.keys[k]  = {}
+    self.keys[k].isDown     = false
+    self.keys[k].isPressed  = false
+    self.keys[k].isReleased = false
+    self.keys[k].test = "ok"
+  end
+end
+
 function InputManager:update(dt)
   for k,v in pairs(self.keys) do
     local isDown = self:isDown(k)

sonic-boost.love/core/modules/scenes.lua

@@ -58,4 +58,9 @@ function Scene:clear()
 
 end
 
+function Scene:flushKeys()
+  core.input:flushKeys()
+  self.keys = core.input.keys
+end
+
 return Scene