extends Node

# ScreenShakeManager - Handles camera shake effects for impact feedback

var camera: Camera3D
var shake_intensity: float = 0.0
var shake_duration: float = 0.0
var shake_timer: float = 0.0
var original_position: Vector3

# Shake presets
const SHAKE_TARGETED: Dictionary = {"intensity": 0.15, "duration": 0.4}
const SHAKE_GOAL_COMPLETE: Dictionary = {"intensity": 0.1, "duration": 0.3}
const SHAKE_LIGHT: Dictionary = {"intensity": 0.05, "duration": 0.2}

func initialize(p_camera: Camera3D):
	"""Initialize with specific camera instance."""
	camera = p_camera
	if camera:
		original_position = camera.position
		print("[ScreenShakeManager] Initialized with camera: ", camera.name)
	else:
		push_warning("[ScreenShakeManager] Initialized with null camera")

func _process(delta):
	if shake_timer > 0:
		shake_timer -= delta
		if camera:
			var shake_offset = Vector3(
				randf_range(-shake_intensity, shake_intensity),
				randf_range(-shake_intensity, shake_intensity),
				randf_range(-shake_intensity * 0.5, shake_intensity * 0.5)
			)
			camera.position = original_position + shake_offset
		
		if shake_timer <= 0:
			_reset_camera()

func _reset_camera():
	if camera:
		camera.position = original_position
	shake_timer = 0.0
	shake_intensity = 0.0

func shake(intensity: float, duration: float):
	"""Trigger camera shake with given intensity and duration."""
	if not camera:
		push_warning("Screen shake requested but no camera assigned!")
		return
	
	if camera:
		# If already shaking, reset camera first to get true original position
		if shake_timer > 0:
			camera.position = original_position
		else:
			original_position = camera.position
		
		shake_intensity = intensity
		shake_duration = duration
		shake_timer = duration

func shake_targeted():
	"""Called when local player is targeted by opponent's powerup."""
	shake(SHAKE_TARGETED.intensity, SHAKE_TARGETED.duration)

func shake_goal_complete():
	"""Called when local player completes a goal."""
	shake(SHAKE_GOAL_COMPLETE.intensity, SHAKE_GOAL_COMPLETE.duration)

func shake_light():
	"""Light shake for minor events."""
	shake(SHAKE_LIGHT.intensity, SHAKE_LIGHT.duration)