class_name EffectComponent
extends Node

## The node this component applies effects to.
## If left null, defaults to the first parent CanvasItem.
@export var target_node: Node = null

var active_effects: Array[BaseEffect] = []

func _ready() -> void:
    if target_node == null:
        # Auto-resolve to the parent if nothing is set
        target_node = get_parent()

func _process(delta: float) -> void:
    if target_node == null:
        return

    # Process all active effects backwards so we can safely remove finished ones
    for i in range(active_effects.size() - 1, -1, -1):
        var effect = active_effects[i]
        effect.process(delta, target_node)

        if effect.is_finished():
            remove_effect(effect)

func apply_effect(effect: BaseEffect) -> void:
    var instance = effect.duplicate()
    instance.start(target_node)
    active_effects.append(instance)

func remove_effect(effect: BaseEffect) -> void:
    effect.stop(target_node)
    active_effects.erase(effect)