feat: reorganized logic + camera

langtons-ant/camera.gd

@@ -0,0 +1,41 @@
+extends Camera2D
+
+@export var minZoom := 0.1
+@export var maxZoom := 2.0
+@export var zoomFactor := 0.1
+@export var zoomDuration := 0.2
+var zoomLevel: float = 1
+var dragging: bool = false
+
+func _ready():
+	pass
+
+func _input(event):
+	if event.is_action_pressed("zoomIn"):
+		setZoomLevel(zoomLevel + zoomFactor)
+	elif event.is_action_pressed("zoomOut"):
+		setZoomLevel(zoomLevel - zoomFactor)
+	elif event.is_action_pressed("resetCamera"):
+		reset()
+
+func _unhandled_input(event):
+	if event is InputEventMouseButton:
+		if event.get_button_index() == 1:
+			dragging = event.is_pressed()
+	elif event is InputEventMouseMotion:
+		if dragging:
+			self.global_position -= event.get_relative() * 1/zoomLevel
+	
+
+func setZoomLevel(level: float, mouse_world_position = self.get_global_mouse_position()):
+	var old_zoomLevel = zoomLevel
+	zoomLevel = clampf(level, minZoom, maxZoom)
+	
+	var direction = (mouse_world_position - global_position)
+	var new_position = self.global_position + direction - ((direction) / (zoomLevel/old_zoomLevel))
+	
+	zoom = Vector2(zoomLevel, zoomLevel)
+	self.global_position = new_position
+
+func reset():
+	self.global_position = Vector2(0, 0)