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0 votes

how to make player node(kinematicbody2d) stop from go outside viewport/screen?

func _input(event: InputEvent) -> void:
    global_position = lerp((get_viewport().get_mouse_position()),global_position,0.6)
    if global_position >= get_viewport_rect().size:

and why when outside viewport/screen i get this error picture link
enter image description here

this full player codepicture link
enter image description here

enemy code
enter image description here

in Engine by (429 points)
edited by

2 Answers

+1 vote
Best answer
func _input(event: InputEvent) -> void:
    var pos = lerp((get_viewport().get_mouse_position()), global_position, 0.6)
    pos.x = clamp(pos.x, 0, get_viewport_rect().size.x)
    pos.y = clamp(pos.y, 0, get_viewport_rect().size.y)
    global_position = pos
by (10,634 points)
selected by

thanks you, can i know why i still get error? i put video in youtube

First of all, judging from both the video and the screenshots you provided (after I wrote my answer), you didn't apply my code but instead did this:

func _input(event: InputEvent) -> void:
    global_position = lerp((get_viewport().get_mouse_position()),global_position,0.6)
    move_and_slide(global_position, Vector2(0, 0))

So this error has nothing to do with my answer. Nor does it have anything to do with leaving the viewport. The error complains about collider being a null instance, so my guess would be you freed the colliding instance somewhere else in your code.

By the way: the code you're using in your _input-function moves the player twice. First by setting it's global_position-property, then by using the move_and_slide function (which expects a velocity vector, not a position vector).

thank you, yes your code has nothing to do with my error, at first i thought leaving viewport the problem. but i still get the problem even i did't leave viewport.
so i stop use mouse for movement and use this input

var right = Input.is_action_pressed("ui_right")
var left = Input.is_action_pressed("ui_left")
var up = Input.is_action_pressed("ui_up")
var down = Input.is_action_pressed("ui_down")

movement.x = int(right) - int(left)
movement.y = int(down) - int(up)

var motion = movement.normalized()*move_speed  #need * delta for move_and_collide

i did't get the problem anymore .

0 votes

Camera contains the above functions,
you should take a good look at the API

(top left right bottom)

No need to write in code to achieve this

by (29 points)
reshown by
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