class_name OverworldCamera extends Camera3D

enum TargetType {
  FREE,
  FOLLOW_NODE
}

enum FollowType {
  INSTANT,
  SMOOTH
}

@export_category("Follow Target")
@export var targetNode:Node3D = null
@export var targetType:TargetType = TargetType.FOLLOW_NODE
@export var targetPosition:Vector3 = Vector3.ZERO

@export_category("Follow Settings")
@export var targetOffset:Vector3 = Vector3.ZERO
@export var positionOffset:Vector3 = Vector3(3, 10, 0)
@export var pixelPerfect:bool = true

func getTargetLookAt() -> Vector3:
  var targetPos:Vector3
  if TargetType.FREE:
    targetPos = self.targetPosition
  elif TargetType.FOLLOW_NODE:
    if targetNode == null:
      targetPos = self.global_transform.origin + self.global_transform.basis.z
    else:
      targetPos = targetNode.global_transform.origin

  targetPos += targetOffset
  return targetPos

func getTargetPosition() -> Vector3:
  var targetPos = getTargetLookAt()
  targetPos += positionOffset
  return targetPos

func _process(_delta: float) -> void:
  var targetPos = getTargetPosition()
  global_transform.origin = targetPos
  var lookAt = getTargetLookAt()
  look_at(lookAt, Vector3.UP)

func _enter_tree() -> void:
  var targetPos = getTargetPosition()
  global_transform.origin = targetPos
  var lookAt = getTargetLookAt()
  look_at(lookAt, Vector3.UP)