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Asked By | dewcked |
I set a mouse cursor and object following the cursor. The problem is, objects that follow the cursor is slow.
Codes I used is bellow
Input.set_custom_mouse_cursor("preloaded image blabla", 0, cursor_position)
and
func _process(delta: float) -> void:
$Follower.position = get_global_mouse_position()
I know using _process is slower than Input
how to make objects directly stick to the mouse? Do I need to code in GDNative for more speed? Or make object accelerate on mouse movement?
++ changed hosting website… cus of lag
gif for detail
Your code looks fine, e.g. here’s one from a crafting game I have:
public override void _Process(float delta)
{
base._Process(delta);
Position = GetViewport().GetMousePosition();
}
The gif looks interesting and displays some ‘lag’. So what else is going on in the scene to cause slow-down? Have you profiled the game?
spaceyjase | 2021-11-17 09:37
It just follows the mouse position frame-by-frame. Ignore that lag word pls. It was about img hosting server lag.
dewcked | 2021-11-17 10:31
Now I’, trying to interpolate the object location with Derivative
# variable for saving location, speed, acceleration and result
# past and current location of mouse
var PastMouseLocation: Vector2
var CurrentMouseLocation: Vector2
# Derivated beforePast~Past and Past~Current location
var DerivatedPastMouseSpeed: Vector2
var DerivatedCurrentMouseSpeed: Vector2
# Derivated beforePast~Past speed
var DerivatedMouseAcceleration: Vector2
# result
var InterpolatedMouseLocation: Vector2
and I set initial value in _ready function
func _ready() -> void:
PastMouseLocation = get_global_mouse_position()
CurrentMouseLocation = get_global_mouse_position()
DerivatedPastMouseSpeed = Vector2(0, 0)
DerivatedCurrentMouseSpeed = Vector2(0, 0)
DerivatedMouseAcceleration = Vector2(0, 0)
At last, _process
func _process(_delta: float) -> void:
# calculate position
PastMouseLocation = CurrentMouseLocation
CurrentMouseLocation = get_global_mouse_position()
# calculate speed
DerivatedPastMouseSpeed = DerivatedCurrentMouseSpeed
DerivatedCurrentMouseSpeed = CurrentMouseLocation - PastMouseLocation
# calculate acceleration
DerivatedMouseAcceleration = DerivatedCurrentMouseSpeed \
- DerivatedPastMouseSpeed
InterpolatedMouseLocation = ???
# Do something with CurrentMouseLocation,
# DerivatedCurrentMouseSpeed and DerivatedMouseAcceleration
This gives me some headaches. But worth trying.
dewcked | 2021-11-17 11:42
I just tried dragging file in Windows OS folder and it definitely works like the first code I questioned about. Maybe this question is meaningless as Windows OS filesystem itself doesn’t handle about it. The more I try to interpolate, the more the object attatched to mouse pointer trembles.
dewcked | 2021-11-17 12:32
I think a ‘best of’ approach is the correct one, likely the simplest too! Good luck!
spaceyjase | 2021-11-17 13:03