feat: create and destroy dragons

dragon.tscn

@@ -1,7 +1,8 @@
-[gd_scene load_steps=3 format=3 uid="uid://c7nfcgjxqeg7l"]
+[gd_scene load_steps=4 format=3 uid="uid://c7nfcgjxqeg7l"]
 
 [ext_resource type="Texture2D" uid="uid://fdqnc2qrrvn1" path="res://icon.svg" id="1_ixu8j"]
-[ext_resource type="Script" uid="uid://bmlkcni4km614" path="res://scripts/dragon.gd" id="1_n6spy"]
+[ext_resource type="Script" uid="uid://bmlkcni4km614" path="res://scripts/dragon/dragon.gd" id="1_n6spy"]
+[ext_resource type="Script" uid="uid://ch7d3wo8ucskb" path="res://scripts/dragon/draggable.gd" id="2_qxdfn"]
 
 [node name="Dragon" type="Window"]
 disable_3d = true
@@ -11,13 +12,14 @@ size = Vector2i(128, 128)
 unresizable = true
 borderless = true
 transparent = true
+script = ExtResource("1_n6spy")
 
 [node name="DragDropDetector" type="Control" parent="."]
 layout_mode = 3
 anchors_preset = 0
 offset_right = 40.0
 offset_bottom = 40.0
-script = ExtResource("1_n6spy")
+script = ExtResource("2_qxdfn")
 
 [node name="Icon" type="Sprite2D" parent="."]
 position = Vector2(64, 65)

scripts/dragon.gd

@@ -1,29 +0,0 @@
-extends Control
-
-
-var dragging = false
-var dragging_start_position = Vector2i()
-
-@onready var window: Window = $".."
-
-
-func _ready():
-	set_process_input(true)
-
-
-func _input(event):
-	if event is not InputEventMouseButton:
-		return
-	if event.button_index != MOUSE_BUTTON_LEFT:
-		return
-		
-	if event.pressed:
-		dragging = true
-		dragging_start_position = Vector2i(get_global_mouse_position())
-	else:
-		dragging = false
-
-
-func _process(_delta):
-	if dragging:
-		window.position = window.position + Vector2i(get_global_mouse_position()) - dragging_start_position

scripts/dragon/draggable.gd

@@ -0,0 +1,44 @@
+extends Control
+
+
+var dragging: bool = false
+var dragging_start_position: Vector2i = Vector2i()
+
+@onready var dragon: Dragon = $".."
+
+
+func _ready() -> void:
+	set_process_input(true)
+
+
+func _input(event) -> void:
+	if event is not InputEventMouseButton:
+		return
+	if event.button_index != MOUSE_BUTTON_LEFT:
+		return
+		
+	if event.pressed:
+		dragging = true
+		dragging_start_position = Vector2i(get_global_mouse_position())
+	else:
+		dragging = false
+		if _is_inside_main_window():
+			_destroy_dragon()
+
+
+func _process(_delta) -> void:
+	if dragging:
+		dragon.position = dragon.position + Vector2i(get_global_mouse_position()) - dragging_start_position
+
+
+func _is_inside_main_window() -> bool:
+	var id: int = get_window().get_window_id()
+	var window_position: Vector2i = DisplayServer.window_get_position(id)
+	var window_size: Vector2i = DisplayServer.window_get_size(id)
+	var rect: Rect2i = Rect2i(window_position, window_size)
+	
+	return rect.intersects(dragon.main_window_rect)
+
+
+func _destroy_dragon() -> void:
+	dragon.queue_free()

scripts/dragon/draggable.gd.uid

@@ -0,0 +1 @@
+uid://ch7d3wo8ucskb

scripts/dragon/dragon.gd

@@ -0,0 +1,5 @@
+extends Window
+class_name Dragon
+
+
+var main_window_rect: Rect2i

scripts/window.gd

@@ -32,5 +32,7 @@ func _instantiate_dragon(relative_position: Vector2i) -> void:
 	add_child(dragon)
 	if dragon is Window:
 		var window_position: Vector2i = DisplayServer.window_get_position()
+		var window_size: Vector2i = DisplayServer.window_get_size()
 		dragon.position = window_position + relative_position
+		dragon.main_window_rect = Rect2i(window_position, window_size)
 		dragon.show()