Need a bit of help

Help
,
1

Godot Version

4.2

Question

how would i define a specific point for an object to move to and back

2

Explain what you want

3

i want the one i circled to run up to whichever one it chooses (i prob wont need help with rng) and attack, and then run back

image
image1069×593 39 KB

4

mario and luigi style lol

5

You’ll need to define a position by each enemy, then use a tween to put the player at that location. Adding a Marker2D child for instance

func move_to_enemy(enemy: Node2D) -> void:
    var end_point: Vector2 = enemy.get_node("Marker2D").global_position
    var tween := create_tween().set_trans(Tween.TRANS_QUAD)
    tween.tween_property(self, "global_position", end_point)

moving them back will be a similar function, using a variable to keep track of their original position instead of end_point

6

i tried making a script and adding this code but it says the last line needs four arguments

1 Like
7

Sorry, the last argument it wants is duration in seconds, how long it takes to complete the tween.

8

ah mb, lemme test it

9

when i call the move to enemy function what would i put as the argument it needs?

10

The enemy to move towards. This enemy will have to have a Marker2D child for positioning in the example, did you change that line or are you prepared for that?

11

im not sure, here’s what i did with your code

image
image1723×993 174 KB

12

It would move to the random target, if it can find them. Maybe you need to add your player’s to a group so it can select via

var player_target = get_tree().get_nodes_in_group("Players").pick_random()
move_to_enemy(player_target)

Then your players need the same Marker2D name

13

okey lemme try it

14

its saying “cannot call method ‘get_nodes_in_group’ on a null value”

image
image1469×778 121 KB

15

Everything is wrong there. move_to_enemy must be handled every frame. it has to be alive. for that it must be in the process(delta). get_node must be “SpotPH/spotter”. it must start from the top of the tree to the targeted node. and “global_position” will not be found in the code. you must write a separate code to fix this position to. like a coordinate or another marker.

you can also find a way to record the current position of the sprite and use it later.

16

Can’t use get_tree() before a node is ready. My example was for the ready function. Make sure your players are in a group named “targets”

func _ready() -> void:
    var player_target = get_tree().get_nodes_in_group("Players").pick_random()
    move_to_enemy(player_target)
17
  1. Tweens do not, and should not be created every frame
  2. the supplied enemy: Node2D will be “SpotPH” or “KyranPH” so searching it’s children for “spotter” (or now “targets”) is correct
  3. global_position is a valid Node2D property
  4. The child Marker2D is to be used as a coordinate reference, or a marker as you describe.
18

image
image1831×710 143 KB

1 Like
19

oh wait shit the error is “invalid get index ‘global_position’ (on base : ‘null instance’)”

1 Like
20

Cool, you put the group on the markers themselves. This isn’t a bad idea, in fact probably better than what I recommended. The problem now is it’s trying to get a child that neither have (hence “null instance”). You can remove the get_node("Marker2D") for a shorter enemy.global_position

1 Like