102 lines
3.1 KiB
GDScript
102 lines
3.1 KiB
GDScript
class_name SpawnHookComponet extends ComponentBase
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##SpawnHookComponent必须绑定一个相关的RayCast2D，用来控制射线想要检测的位置。
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@export var binded_hook_ray_cast_2d : RayCast2D
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##可以通過在這裏添加一個ComponentOwner默認的字段名來讀取輸入方向，默認是為空的。
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@export var binded_hook_move_input_property_name: StringName
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##用於Grapping Hook的基本Instance
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const GRAPPING_HOOK = preload("uid://wlbuqjf2rg03")
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var _ray_direction: Vector2
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var _ray_reference: RayCast2D
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var _ray_length: float = 100
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##當前的Graphook的實例
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var _current_grap_hook_inst: GrappingHook
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##钩爪伸长达到动画位置
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signal hook_reach_finished
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func _physics_process(delta: float) -> void:
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#更新當前的grap_hook的移動
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update_grap_physics(get_grap_move_input(),delta)
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##用来设置绑定的Ray的方向。
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func set_ray_direction(in_direction: Vector2) -> Vector2:
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if _ray_direction == in_direction:
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return _ray_direction
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_ray_direction = in_direction
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if _ray_reference:
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_ray_reference.target_position = Vector2(
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_ray_direction.x,
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_ray_direction.y
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) * _ray_length
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return _ray_direction
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##生成一个Grap Hook
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func spawn_grap_hook_inst() -> GrappingHook:
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##如果沒有正確的和任何可以抓取的物體發生碰撞，會直接返回
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if not _ray_reference.is_colliding(): return null
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var i = GRAPPING_HOOK.instantiate() as GrappingHook
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i.init(self)
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get_tree().current_scene.add_child(i)
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i.start_hook_with_instigator(_ray_reference.get_collision_point(),component_owner)
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_current_grap_hook_inst = i
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return _current_grap_hook_inst
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func grap_reach_target(duration: float) -> bool:
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if not _ray_reference or not _current_grap_hook_inst:return false
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##重置所有Points的坐标点位置。
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_current_grap_hook_inst.reset_line_points_to_target(component_owner.global_position)
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var start_pos: Vector2 = component_owner.global_position
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var target_pos: Vector2 = _ray_reference.get_collision_point()
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var t := get_tree().create_tween()
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t.set_trans(Tween.TRANS_SINE)
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t.set_ease(Tween.EASE_OUT)
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t.tween_method(
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_current_grap_hook_inst.update_line_anchor_pos,
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start_pos,
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target_pos,
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duration
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)
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##结束时会发送广播
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t.finished.connect(_on_hook_reach_finished)
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return true
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##更新GrapHook的物理
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func update_grap_physics(input: Vector2,delta: float) -> void:
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if input.is_zero_approx(): return
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if not _current_grap_hook_inst: return
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var i = input.normalized()
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_current_grap_hook_inst.move_hook(input,delta)
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##此函數默認為Vector.Zeor,子類可以重寫以得到一個全新的結果，也可以通過綁定的方式獲得一個結果。
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func get_grap_move_input() -> Vector2:
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#如果我們在組件裏綁定了Component上的一個字段，也可以直接獲取。
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if binded_hook_move_input_property_name in component_owner:
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return component_owner.get(binded_hook_move_input_property_name)
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return Vector2.ZERO
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func _on_hook_reach_finished() -> void:
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_current_grap_hook_inst.m_update_rope_with_nodes = true
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hook_reach_finished.emit()
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func _init_component() -> void:
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_ray_reference = binded_hook_ray_cast_2d
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