Topic was automatically imported from the old Question2Answer platform.
Asked By
JymWythawhy
Old Version
Published before Godot 3 was released.
I have the following code, but it isn’t working like I would expect.
func _on_Tile_mouse_enter():
if Input.is_mouse_button_pressed(BUTTON_LEFT):
print("Left mouse dragged over Tile: ", gridPosition)
elif Input.is_mouse_button_pressed(BUTTON_RIGHT):
print("Right mouse dragged over Tile: ", gridPosition)
This is on a Control node with a sprite child node. I would like the tile to do some action if I drag a clicked mouse over the control node, but the above code is not working. If I put a print command outside of the checks for mouse buttons being pressed, that fires every time the mouse enters the tiles, but these ones inside don’t fire, usually. If I attempt to click and drag many times in a row, occasionally one of my attempts will work, and every tile I mouse over will fire the message. I can’t figure out why it works sometimes but not others.
I have different code that fires on an actual mouse click on the tile, and that works everytime. It’s just this code that isn’t working.
One method is keeping track of the state with a flag, and using the input events. Something like this inside a control with a a mouse enter signal (The extra branching is just for making it easier to read, you can just put event.pressed right into the flag):
func _ready():
set_process_input(true)
var dragging = false
func _input(event):
if (event.type == InputEvent.MOUSE_BUTTON):
if (event.button_index == BUTTON_LEFT and event.pressed): dragging = true
elif(event.button_index == BUTTON_LEFT and not event.pressed): dragging = false
func _on_Control_mouse_enter():
if(dragging): print("entered while mouse down")
Another version if you want to deal with either right or left dragging might look like this:
func _ready():
set_process_input(true)
var left_dragging = false
var right_dragging = false
func _input(event):
if(event.type == InputEvent.MOUSE_BUTTON):
if(event.button_index == BUTTON_LEFT):
left_dragging = event.pressed
if(event.button_index == BUTTON_RIGHT):
right_dragging = event.pressed
func _on_Control_mouse_enter():
if(left_dragging): print("entered while left mouse button down")
if(right_dragging): print("entered while right mouse button down.")
That makes sense, and is what I am trying to do- I just thought Godot already had a way to check if the mouse was pressed without my having to cache that info somewhere. I will just handle it myself, like you suggest. Thanks!
JymWythawhy | 2016-11-18 14:04
You’re welcome.
I don’t think Godot has built-in events for things like dragging or the timing of input events.
It looks like Input.is_mouse_button_pressed(button ID) works for what I was looking for. The problem was coming from some other issue, but Godot apparently does have a method to check the pressed condition of mouse buttons. Neat!
