2D physics interpolation ghosted sprite2d

[CodeLazier]

Tested versions

4.3 official

System information

win10

Issue description

Enable physical interpolation

Turn off physical interpolation

note:put the input response code into the _input and the ghost disappears.

Steps to reproduce

See example project

Minimal reproduction project (MRP)

t.zip

[kleonc]

That's expected behavior, you'd either need to to turn off physics interpolation specifically for that AnimatedSprite2D: Or reset in manually in code after the "teleportation":

func _test()->void:
    if Input.is_action_just_pressed(&"ui_accept") && !animated_sprite_2d.visible:
        if _vel.x > 0:
            animated_sprite_2d.position.x = 30
        elif _vel.x < 0:
            animated_sprite_2d.position.x = -30

        animated_sprite_2d.show()
        animated_sprite_2d.reset_physics_interpolation() # <-- Currently must be after `show()` see comments below.
        animated_sprite_2d.play()
        await animated_sprite_2d.animation_finished
        animated_sprite_2d.hide()

Otherwise it interpolates with whatever its previous position was, meaning it possibly interpolates between (30, 0) and (-30, 0), right after you're showing it.

Better visible with lower physics/common/physics_ticks_per_second project setting:

---

Seems like documentation issue, should be solved by https://github.com/godotengine/godot-docs/pull/9738.

[CodeLazier]

yes, turn off physics interpolation specifically for that AnimatedSprite2D, it's worked. but, animated_sprite_2d.reset_physics_interpolation(),the problem still exists

[kleonc]

but, animated_sprite_2d.reset_physics_interpolation(),the problem still exists

Oh, indeed. Currently animated_sprite_2d.reset_physics_interpolation() would need to be after animated_sprite_2d.show() to take effect, see: https://github.com/godotengine/godot/issues/94736#issuecomment-2251369114. I've edited my comment.

(I've tested it before and it worked, so I must have moved the animated_sprite_2d.reset_physics_interpolation() line closer to the "teleporation" code after pasting it in here.)

---

@lawnjelly @rburing Shouldn't is_visible_in_tree() be changed to is_inside_tree() in this check? :thinking: https://github.com/godotengine/godot/blob/568589c9d8c763bfb3a4348174d53b42d7c59f21/scene/main/canvas_item.cpp#L377-L381