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World.gd
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World.gd
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extends Spatial
export var number_of_birds = 10
export var spawn_range = 10
export var gravity = 9.81
# Declare member variables here. Examples:
var birds: Array
var bird = preload("res://Bird.tscn")
var rng = RandomNumberGenerator.new()
var distance_matrix: Array
# Called when the node enters the scene tree for the first time.
func _ready():
#Setup the ui elements
var disposable_bird = bird.instance()
$SidePanel/Grid/cohesion_slider.value = disposable_bird.cohesion_force
$SidePanel/Grid/cohesion_label.text = str(disposable_bird.cohesion_force)
$SidePanel/Grid/cohesion_distance_slider.value = disposable_bird.cohesion_distance
$SidePanel/Grid/cohesion_distance_label.text = str(disposable_bird.cohesion_distance)
$SidePanel/Grid/seperation_slider.value = disposable_bird.seperation_force
$SidePanel/Grid/seperation_label.text = str(disposable_bird.seperation_force)
$SidePanel/Grid/align_slider.value = disposable_bird.alignment_force
$SidePanel/Grid/align_label.text = str(disposable_bird.alignment_force)
$SidePanel/Grid/origin_slider.value = disposable_bird.origin_force
$SidePanel/Grid/origin_label.text = str(disposable_bird.origin_force)
rng.randomize()
for i in number_of_birds:
var b = bird.instance()
var x = rng.randf_range(-spawn_range, spawn_range)
var z = rng.randf_range(-spawn_range, spawn_range)
var y = rng.randf_range(-spawn_range, spawn_range)
b.translation = Vector3(x,y,z)
birds.append(b)
b.distance_key = i
add_child(b)
init_distance_matrix()
compute_distance_matrix()
for b in birds:
b.alive = true
b.fellow_birds = birds
b.distance_matrix = distance_matrix
# Called every frame. 'delta' is the elapsed time since the previous frame.
func _process(delta):
compute_distance_matrix()
func make_bird(debug_me):
var b = bird.instance()
var x = rng.randf_range(-spawn_range, spawn_range)
var z = rng.randf_range(-spawn_range, spawn_range)
var y = rng.randf_range(-spawn_range, spawn_range)
b.debug_me = debug_me
b.distance_key = len(birds)
birds.append(b)
b.translation = Vector3(x,y,z)
b.fellow_birds = birds
b.distance_matrix = distance_matrix
compute_distance_matrix()
add_child(b)
func init_distance_matrix():
#First make sure the array is the right size
distance_matrix = []
for i in number_of_birds:
var row = []
for j in number_of_birds:
row.append(0)
distance_matrix.append(row)
func compute_distance_matrix():
if len(distance_matrix) < len(birds):
expand_distance_matrix()
if len(distance_matrix) > len(birds):
reduce_distance_matrix()
for i in len(birds):
for j in range(i, len(birds)):
#Compute the distance between this bird j and bird i
if birds[i] == birds[j]:
continue
var d = birds[i].global_transform.origin.distance_to(birds[j].global_transform.origin)
#store in the distance matrix
distance_matrix[i][j] = d
distance_matrix[j][i] = d
func expand_distance_matrix():
for row in distance_matrix:
row.append(0)
var new_len = len(distance_matrix) + 1
var row = [0]
row.resize(new_len)
distance_matrix.append(row)
func reduce_distance_matrix():
for row in distance_matrix:
row = row.slice(0,-2)
distance_matrix = distance_matrix.slice(0,-2)
func _on_cohesion_slider_value_changed(value):
for b in birds:
b.cohesion_force = value
$SidePanel/Grid/cohesion_label.text = str(value)
func _on_seperation_slider_value_changed(value):
for b in birds:
b.seperation_force = value
$SidePanel/Grid/seperation_label.text = str(value)
func _on_align_slider_value_changed(value):
for b in birds:
b.alignment_force = value
$SidePanel/Grid/align_label.text = str(value)
func _on_origin_slider_value_changed(value):
for b in birds:
b.origin_force = value
$SidePanel/Grid/origin_label.text = str(value)
func _on_cohesion_distance_slider_value_changed(value):
for b in birds:
b.cohesion_distance = value
$SidePanel/Grid/cohesion_distance_label.text = str(value)
func _on_add_button_pressed():
make_bird(true)
func _on_remove_button_pressed():
if len(birds) <= 0:
return
birds[-1].queue_free()
birds = birds.slice(0,-2)
reduce_distance_matrix()
func _on_reset_button_pressed():
for b in birds:
var x = rng.randf_range(-spawn_range, spawn_range)
var z = rng.randf_range(-spawn_range, spawn_range)
var y = rng.randf_range(-spawn_range, spawn_range)
b.translation = Vector3(x,y,z)