42 lines
1.1 KiB
GDScript3
42 lines
1.1 KiB
GDScript3
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extends Camera2D
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@export var MIN_ZOOM: float = 0.5
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@export var MAX_ZOOM: float = 3.0
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@export var ZOOM_RATE: float = 8.0
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@export var ZOOM_INCREMENT: float = 0.1
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var target_zoom: float = 1.0
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var reset_pos: Vector2 = Vector2(0.0, 0.0)
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func _physics_process(delta: float) -> void:
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zoom = lerp(zoom, target_zoom * Vector2.ONE, ZOOM_RATE * delta)
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set_physics_process(not is_equal_approx(zoom.x, target_zoom))
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func _unhandled_input(event: InputEvent) -> void:
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if event is InputEventMouseButton:
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if event.is_pressed():
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if event.button_index == MOUSE_BUTTON_WHEEL_UP:
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zoom_in()
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if event.button_index == MOUSE_BUTTON_WHEEL_DOWN:
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zoom_out()
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if event is InputEventMouseMotion:
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if event.button_mask == MOUSE_BUTTON_MASK_LEFT:
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position -= event.relative / zoom
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if event is InputEventKey:
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if event.keycode == KEY_SPACE:
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target_zoom = 1.0
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zoom = Vector2(1.0, 1.0)
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position = reset_pos
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func zoom_in() -> void:
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target_zoom = max(target_zoom - ZOOM_INCREMENT, MIN_ZOOM)
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set_physics_process(true)
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func zoom_out() -> void:
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target_zoom = min(target_zoom + ZOOM_INCREMENT, MAX_ZOOM)
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set_physics_process(true)
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