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Attention | Topic was automatically imported from the old Question2Answer platform. |
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Asked By | turbostack |
Hello, I am creating a turn-based game where cars move in turns. One movement is one turn, and then the next car moves. The relevant tree is as such:
TurnQueue (Node2D)
- Car 1 (Kinematic Body)
- Car 2 (Kinematic Body)
Node2D contains the turn queue script. My turn queue script is as such:
extends Node2D
class_name TurnQueue
var active_character
func initialize():
active_character = get_child(0)
func play_turn():
yield(active_character, "move_completed")
var new_index : int = (active_character.get_index() + 1) % get_child_count()
active_character = get_child(new_index)
However, “active_character” returns a value of null, and therefore the play_turn function cannot execute whatsoever. The yield part of play_turn() is meant to take a signal from the first car after moving, and then have the next car move and loop around to the beginning of the queue. How can I fix this problem?
Below is the script for the car nodes if it is relevant.
extends KinematicBody2D
onready var ray = $RayCast2D
var grid_size = 25
### MOVEMENT VECTORS OF CARS ###
var inputs = {
'ui_up': Vector2.UP + 2*Vector2.RIGHT,
'ui_down': Vector2.DOWN + 2*Vector2.LEFT,
'ui_left': 2*Vector2.LEFT + Vector2.UP,
'ui_right': 2*Vector2.RIGHT + Vector2.DOWN
}
### SIGNALS ###
signal move_completed
### SET VARIABLES FOR SPRITE TEXTURE CHANGES ###
onready var mysprite = get_node("Red Sedan")
var carTestNW = preload("res://Assets/Test Set/carTestNW.png")
var carTestSE = preload("res://Assets/Test Set/carTestSE.png")
var carTestSW = preload("res://Assets/Test Set/carTestSW.png")
var carTest = preload("res://Assets/Test Set/carTest.png")
### SET VARIABLES ###
func _ready():
return
func _unhandled_input(event):
for dir in inputs.keys():
if event.is_action_pressed(dir):
move(dir)
emit_signal("move_completed")
func move(dir):
var vector_pos = inputs[dir] * grid_size
ray.cast_to = vector_pos # update position
ray.force_raycast_update() # raycast looks where we want
if !ray.is_colliding(): # ! = is not, if no collision, move
position += vector_pos
if Input.is_action_pressed("ui_up"):
mysprite.set_texture(carTestSE)
if Input.is_action_pressed("ui_down"):
mysprite.set_texture(carTestSW)
if Input.is_action_pressed("ui_left"):
mysprite.set_texture(carTestNW)
if Input.is_action_pressed("ui_right"):
mysprite.set_texture(carTest)
I am very new to Godot, so I am sorry if anything is not understandable. Thank you for the help!