Problem with turret-like enemy bullet_direction system

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, ,
1

Currently all the enemy does choose between 1, 2, 3 and 4.
and call the group “Bullet” to play one of these functions
(for example it will call Change_direction_up when it chooses the number 1) :

# this is a part of the bullet script.

func Change_direction_up():
	direction = "Up"
	print(direction)
func Change_direction_down():
	direction = "Down"
	print(direction)
func Change_direction_left():
	direction = "Left"
	print(direction)
func Change_direction_right():
	direction = "Right"
	print(direction)

Then, it will spawn a bullet, and the bullet will use _process to move the bullet accordingly to the direction variable


# also a part of the bullet script

func _process(delta):
	if direction == "Up":
		rotation_degrees = 0
		position.y -= speed
	if direction == "Down":
		rotation_degrees = 180
		position.y += speed
	if direction == "Left":
		rotation_degrees = 270
		position.x -= speed
	if direction == "Right":
		rotation_degrees = 90
		position.x += speed

What I want to do, is that when I spawn a turret, the turret will randomly choose which direction it will shoot in, and keep on doing that.
But instead, all the turrets will shoot in the same direction

image
image1123×636 23.6 KB

(blue plunger shaped things are bullets)

Scripts:

extends Node2D

#
#this is the script of the bullet
#

@export var direction = "No_direction" #Set this variable at either "Up", "Down", "Left", or "Right".
var speed = 3

func Change_direction_up():
	direction = "Up"
	print(direction)
func Change_direction_down():
	direction = "Down"
	print(direction)
func Change_direction_left():
	direction = "Left"
	print(direction)
func Change_direction_right():
	direction = "Right"
	print(direction)

func _process(delta):
	if direction == "Up":
		rotation_degrees = 0
		position.y -= speed
	if direction == "Down":
		rotation_degrees = 180
		position.y += speed
	if direction == "Left":
		rotation_degrees = 270
		position.x -= speed
	if direction == "Right":
		rotation_degrees = 90
		position.x += speed

func _on_area_2d_body_entered(body):
	get_tree().call_group("Player", "hit_by_bullet")

…

extends Node2D

#
# this is the script of the enemy/turret-thing
#

var BULLET = load("res://All scenes/bullet.tscn")
var rng = RandomNumberGenerator.new()
var random_number
var pos = position

func _ready():
	choose_direction_of_bullet()
	shoot(pos)

func choose_direction_of_bullet():
	# chooses from numbers 1, 2, 3, and 4
	random_number = rng.randf_range(1, 4)
	if (random_number > 0 && random_number < 1):
		random_number = 1 #up
	if (random_number > 1 && random_number < 2):
		random_number = 2 #down
	if (random_number > 2 && random_number < 3):
		random_number = 3 #left
	if (random_number > 3 && random_number < 4):
		random_number = 4 #right

func shoot(pos):
	var bullet = BULLET.instantiate()
	add_child(bullet)
	if random_number == 1:
		get_tree().call_group("Bullet", "Change_direction_up")
	if random_number == 2:
		get_tree().call_group("Bullet", "Change_direction_down")
	if random_number == 3:
		get_tree().call_group("Bullet", "Change_direction_left")
	if random_number == 4:
		get_tree().call_group("Bullet", "Change_direction_right")
2

As of your code style, you can choose a random dir in this way:

func choose_random_dir():
    call_deferred("Change_direction_" + ["left", "right", "up", "down"].pick_random())

So whenever you call this function, it will call a random function of change direction (it can be up, left, etc). I suggest you to call it in the ready function.

Or if you just want to create a function that will just pick a random direction, then do like this:

func Change_direction_to_random():
    direction = ["Up", "Down", "Left", "Right"].pick_random()
    print(direction)
1 Like
3

Thanks!

1 Like