KeyHit Problem

[tipforeveryone]

Hi,

There is something not right with window:KeyHit() function, I did mention this problem in the past but wasn't solved

This is the code

Script.condition = false

function Script:UpdateWorld()
	if self.condition then
		if window:KeyHit(Key.F) then
  			System:Print("F key pressed!!")
		end
	end
	if window:KeyHit(Key.L) then
		self.condition = true
	end
end

Process:

• self.condition = false will make sure that when I press the F key, there is nothing happen
• then If I press the L key to make self.condition = true, the console displays string "F key pressed!".

I suppose the window:KeyHit(Key.F)  is somehow  "saved" and waits until the condition is met to execute code inside it.

This is annoying in some situations indeed. Here is an example:

1. A door can only be opened by pressing F when a electric switch is ON.
2. Player may try to press the F key to open door before he is instructed that the switch must be ON to open the door (at this point the window:KeyHit(Key.F) is "saved" as I said above)
3. After turn on the electric switch, the door will be Opened by that "saved" command from Key.F hit.
4. I don't want that. It should be kept closing until I press F with the turned ON electric switch.

The temporary fix is using window:KeyDown() with a boolean variable like this

Script.keyPressed = false

function Script:UpdateWorld()
	if window:KeyDown(Key.F) then
		if self.keyPressed == false then
			self.condition = true
			--ANOTHER CODE

			self.keyPressed = true
		end
	else
		self.keyPressed = false
	end
end

But this causes another problem, that is: If I replace a function to the "--ANOTHER CODE", will be executed many times because it is in UpdateWorld() function. Therefore I don't want to use this fix

So how can I execute my code only one time when I press my desired key without getting the first problem with window:KeyHit()

[AggrorJorn]

Flush the keys to get the desired effect: https://www.leadwerks.com/learn?page=API-Reference_Object_Window_FlushKeys. Also be aware of Keyhit for the same key being stored in a single frame. That means of 2 frames us KeyHit for the Spacebar, only one script will have the spacebar set to true(pressed).

*edit: just read the topic you were refering to. So this solution might not work for you. https://www.leadwerks.com/community/topic/15185-windowkeyhit-strange-problem/?tab=comments#comment-102329

[tipforeveryone]

Thank you

[Josh]

Shouldn't it look like this?:

Script.condition = false

function Script:UpdateWorld()
	if window:KeyHit(Key.F) then
  		if self.condition then
  			System:Print("F key pressed!!")
		end
	end
	if window:KeyHit(Key.L) then
		self.condition = true
	end
end

 

[tipforeveryone]

Sometime I need something like this

if self.condition then
	if window:KeyHit(Key.A) then
	--Do a bunch of code--
	end
	if window:KeyHit(Key.B) then
	--Do a bunch of code--
	end
	if window:KeyHit(Key.C) then
	--Do a bunch of code--
	end
end

It is much clear and structurable than this I think

if window:KeyHit(Key.A) then
	if self.condition then
	--Do a bunch of code--
	end
end
if window:KeyHit(Key.B) then
	if self.condition then
	--Do a bunch of code--
	end
end
if window:KeyHit(Key.C) then
	if self.condition then
	--Do a bunch of code--
	end
end

 

[Josh]

key_a = window:KeyHit(Key.A)
if self.condition then...