61 lines
1.9 KiB
GDScript3
61 lines
1.9 KiB
GDScript3
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extends Camera2D
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class_name DebugCamera2D
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# Lower cap for the `_zoom_level`.
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@export var min_zoom := 0.5
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# Upper cap for the `_zoom_level`.
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@export var max_zoom := 2.0
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# Controls how much we increase or decrease the `_zoom_level` on every turn of the scroll wheel.
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@export var zoom_factor := 0.1
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# Duration of the zoom's tween animation.
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@export var zoom_duration := 0.2
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# The camera's target zoom level.
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var _zoom_level : float = 1.0 :
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set(value):
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var tween = get_tree().create_tween()
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# We limit the value between `min_zoom` and `max_zoom`
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_zoom_level = clamp(value, min_zoom, max_zoom)
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tween.tween_property(self, "zoom", Vector2(_zoom_level, _zoom_level), zoom_duration).set_trans(Tween.TRANS_SINE).set_ease(Tween.EASE_OUT)
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var _previousPosition: Vector2 = Vector2(0, 0)
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var _moveCamera: bool = false
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var main_cam : Camera2D
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func _ready() -> void:
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enabled = false; name = "DebugCamera2D"
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main_cam = get_viewport().get_camera_2d()
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func _unhandled_input(event: InputEvent) -> void:
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# Toggle cameras
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if event.is_action_pressed(&"toggle_debug_camera"):
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var cam := main_cam
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cam.enabled = !cam.enabled
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enabled = !cam.enabled
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self.global_position = cam.global_position
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if enabled: self.make_current()
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else: cam.make_current()
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if not enabled: return
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if event is InputEventMouseButton:
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# zoom out
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if event.pressed && event.button_index == MOUSE_BUTTON_WHEEL_DOWN:
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_zoom_level = _zoom_level - zoom_factor * _zoom_level
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# zoom in
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if event.pressed && event.button_index == MOUSE_BUTTON_WHEEL_UP:
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_zoom_level = _zoom_level + zoom_factor * _zoom_level
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if event is InputEventMouseButton && event.button_index == MOUSE_BUTTON_RIGHT:
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if event.is_pressed():
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_previousPosition = event.position
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_moveCamera = true
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else:
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_moveCamera = false
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elif event is InputEventMouseMotion && _moveCamera:
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global_position += (_previousPosition - event.position) / _zoom_level
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_previousPosition = event.position
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