MORE Camera

scenes/main/camera_2d.gd

@@ -0,0 +1,84 @@
+extends Camera2D
+
+@export_group("Zoom")
+@export var _target_zoom: float = 1.0
+
+
+func _ready() -> void:
+	position = Vector2(500, 500)
+
+
+func _unhandled_input(event: InputEvent) -> void:
+	if event is InputEventMouseMotion:
+		if event.button_mask == MOUSE_BUTTON_MASK_MIDDLE:
+			position -= event.relative * zoom
+		
+	if event is InputEventMouseButton:
+		if event.is_pressed():
+			if event.button_index == MOUSE_BUTTON_WHEEL_DOWN:
+				zoom_in()
+			if event.button_index == MOUSE_BUTTON_WHEEL_UP:
+				zoom_out()
+		
+	if event is InputEventAction:
+		print("Action pressed", event.action)
+		if event.is_action_pressed("camera_up"):
+			move_up()
+		elif event.is_action_pressed("camera_down"):
+			move_down()
+		elif event.is_action_pressed("camera_left"):
+			move_left()
+		elif event.is_action_pressed("camera_right"):
+			move_right()
+				
+
+@export_group("Zoom")
+@export var MIN_ZOOM: float = 0.1
+@export var MAX_ZOOM: float = 1.0
+@export var ZOOM_INCREMENT: float = 0.1
+
+func zoom_in():
+	_target_zoom = max(_target_zoom - ZOOM_INCREMENT, MIN_ZOOM)
+	set_physics_process(true)
+
+
+func zoom_out():
+	_target_zoom = min(_target_zoom + ZOOM_INCREMENT, MAX_ZOOM)
+	set_physics_process(true)
+
+const ZOOM_RATE: float = 8.0
+
+@export var camera_speed: float = 10
+var target_position: Vector2
+
+
+func _physics_process(delta: float) -> void:
+	zoom = lerp(
+		zoom,
+		_target_zoom * Vector2.ONE,
+		ZOOM_RATE * delta
+	)
+	
+	position = lerp(
+		position,
+		target_position,
+		camera_speed * delta
+	)	
+
+#	set_physics_process(not is_equal_approx(zoom.x, _target_zoom))
+
+
+func move_up():
+	target_position.y -= camera_speed
+
+
+func move_down():
+	target_position.y += camera_speed
+
+
+func move_right():
+	target_position.x += camera_speed
+
+
+func move_left():
+	target_position.x -= camera_speed