using UnityEngine;
namespace Invector
{
    public class vSpike : MonoBehaviour
    {
        HingeJoint joint;
        [HideInInspector]
        public vSpikeControl control;

        void Start()
        {
            joint = GetComponent<HingeJoint>();
        }
        bool inConnect;
        Transform impaled;

        void OnCollisionEnter(Collision collision)
        {
            if (collision.rigidbody != null && collision.collider.GetComponent<vCharacterController.vDamageReceiver>() != null && !inConnect)
            {
                bool condition = control == null ? true : !control.attachColliders.Contains(collision.collider.transform);
                if (control) control.attachColliders.Add(collision.collider.transform);
                if (condition)
                {
                    inConnect = true;
                    if (joint && collision.rigidbody)
                        joint.connectedBody = collision.rigidbody;

                    impaled = collision.transform;
                    foreach (Rigidbody body in collision.transform.root.GetComponentsInChildren<Rigidbody>())
                    {
                        if (!body.isKinematic)
                        {
                            body.linearVelocity = Vector3.zero;
                        }
                    }
                    var damageReceiver = collision.collider.GetComponent<vCharacterController.vDamageReceiver>();
                    if (damageReceiver && damageReceiver.ragdoll && damageReceiver.ragdoll.iChar != null)
                    {
                        var iChar = damageReceiver.ragdoll.iChar;
                        // Route the kill through TakeDamage instead of writing health directly: the
                        // ragdoll is only ever raised by the onActiveRagdoll event, which TakeDamage
                        // fires and ChangeHealth does not, so an impaled character used to just die
                        // standing up. Sent to the character rather than the receiver so the spike
                        // stays lethal regardless of that collider's damage multiplier.
                        var damage = new vDamage((int)iChar.currentHealth, true)
                        {
                            activeRagdoll = true,
                            ignoreDefense = true,
                            sender = transform,
                            receiver = iChar.transform,
                            hitPosition = collision.GetContact(0).point,
                        };
                        iChar.TakeDamage(damage);
                    }
                }
            }
        }

        void OnTriggerExit(Collider other)
        {
            if (other.transform != null && impaled != null && other.transform == impaled)
            {
                if (joint)
                    joint.connectedBody = null;
                impaled = null;
                if (control != null && control.attachColliders.Contains(impaled))
                    control.attachColliders.Remove(impaled);
                inConnect = false;
            }
        }
    }
}