camera zoom in/out & camera panning

scripts/CameraZoom2D.gd

@@ -0,0 +1,40 @@
+# Class handles the camera zoom and movement in the game
+class_name CameraZoom2D
+extends Camera2D
+
+var _zoom_level : float = 1.0 : set = _set_zoom_level
+var is_dragging_camera = false
+var tween
+
+func _set_zoom_level(value: float) -> void:
+	_zoom_level = clamp(value, Globals.CAMERA_MIN_ZOOM_LEVEL, Globals.CAMERA_MAX_ZOOM_LEVEL)		
+	
+	#interpolate frames between zoom levels to make zooming look smoother
+	tween = get_tree().create_tween()
+	tween.tween_property(
+		self,
+		"zoom",		
+		Vector2(_zoom_level, _zoom_level),
+		Globals.CAMERA_ZOOM_DURATION
+	)
+
+func _unhandled_input(event):
+	# camera zooming
+	if event.is_action_pressed("camera_zoom_in"):
+		_set_zoom_level(_zoom_level - Globals.CAMERA_ZOOM_FACTOR)
+	elif event.is_action_pressed("camera_zoom_out"):
+		_set_zoom_level(_zoom_level + Globals.CAMERA_ZOOM_DURATION)
+		
+	# camera dragging		
+	if event is InputEventMouseButton and event.button_index == MOUSE_BUTTON_LEFT:
+		if !is_dragging_camera and event.pressed:
+			is_dragging_camera = true
+		if is_dragging_camera and !event.pressed:
+			is_dragging_camera = false
+
+	if event is InputEventMouseMotion and is_dragging_camera:
+		if self.position != event.position:
+			tween = get_tree().create_tween()
+			tween.tween_property(self, "property", Vector2(self.position, event.position), Globals.CAMERA_ZOOM_DURATION)
+		else:
+			self.position = event.position * Globals.CAMERA_DRAG_MULTI