78 lines
2.4 KiB
GDScript
78 lines
2.4 KiB
GDScript
extends Camera2D
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@export var smoothing_enabled_custom: bool = true
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@export var margin: Vector2 = Vector2(0, 0)
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@export var min_zoom: float = 0.1
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@export var max_zoom: float = 5.0
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@export var transition_duration: float = 0.8
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var _tween: Tween
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func transition_to_bounds(bounds: Rect2) -> void:
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# 1. 计算目标数据
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var target_zoom_val = _calculate_zoom_for_bounds(bounds)
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var target_zoom = Vector2(target_zoom_val, target_zoom_val)
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var target_position = bounds.get_center()
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print("[Camera2D] Transition start -> Pos: ", target_position, " Zoom: ", target_zoom)
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# 2. 准备过渡
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if _tween: _tween.kill()
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_tween = create_tween()
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_tween.set_parallel(true)
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_tween.set_trans(Tween.TRANS_CUBIC).set_ease(Tween.EASE_IN_OUT)
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# 暂时禁用内置平滑和限制，避免冲突
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var prev_smoothing = position_smoothing_enabled
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position_smoothing_enabled = false
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_clear_limits()
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# 3. 执行过渡
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_tween.tween_property(self, "zoom", target_zoom, transition_duration)
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_tween.tween_property(self, "global_position", target_position, transition_duration)
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# 4. 过渡完成回调
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_tween.chain().tween_callback(func():
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print("[Camera2D] Transition done.")
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set_bounds_limit(bounds)
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# 恢复平滑设置 (如果之前开启了)
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if prev_smoothing:
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position_smoothing_enabled = true
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# 也可以强制启用，看你需求
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# position_smoothing_enabled = smoothing_enabled_custom
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)
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func _calculate_zoom_for_bounds(bounds: Rect2) -> float:
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var viewport_rect = get_viewport_rect()
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var viewport_size = viewport_rect.size
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var target_size = bounds.size + margin * 2
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if target_size.x <= 0 or target_size.y <= 0:
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return zoom.x
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var scale_x = viewport_size.x / target_size.x
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var scale_y = viewport_size.y / target_size.y
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var new_zoom = min(scale_x, scale_y)
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return clamp(new_zoom, min_zoom, max_zoom)
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# 立即设置（非过渡）
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func fit_to_bounds(bounds: Rect2) -> void:
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var new_zoom_val = _calculate_zoom_for_bounds(bounds)
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zoom = Vector2(new_zoom_val, new_zoom_val)
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func center_on_bounds(bounds: Rect2) -> void:
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global_position = bounds.get_center()
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func set_bounds_limit(bounds: Rect2) -> void:
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limit_left = int(bounds.position.x)
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limit_right = int(bounds.end.x)
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limit_top = int(bounds.position.y)
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limit_bottom = int(bounds.end.y)
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func _clear_limits() -> void:
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limit_left = -10000000
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limit_right = 10000000
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limit_top = -10000000
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limit_bottom = 10000000
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