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Assets/RealisticCarControllerV3/Scripts/RCC_TruckTrailer.cs
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320
Assets/RealisticCarControllerV3/Scripts/RCC_TruckTrailer.cs
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//----------------------------------------------
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// Realistic Car Controller
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//
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// Copyright © 2014 - 2023 BoneCracker Games
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// https://www.bonecrackergames.com
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// Buğra Özdoğanlar
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//
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//----------------------------------------------
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using UnityEngine;
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using System.Collections;
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using System.Collections.Generic;
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/// <summary>
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/// Truck trailer has additional wheelcolliders. This script handles center of mass of the trailer, wheelcolliders, ligths, etc...
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/// </summary>
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[AddComponentMenu("BoneCracker Games/Realistic Car Controller/Misc/RCC Truck Trailer")]
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[RequireComponent(typeof(Rigidbody))]
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[RequireComponent(typeof(ConfigurableJoint))]
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public class RCC_TruckTrailer : MonoBehaviour {
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private RCC_CarControllerV3 carController; // Car controller of this trailer.
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private Rigidbody rigid; // Rigidbody.
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private ConfigurableJoint joint; // Configurable joint of this trailer.
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/// <summary>
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/// Wheel colliders and models.
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/// </summary>
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[System.Serializable]
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public class TrailerWheel {
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public WheelCollider wheelCollider;
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public Transform wheelModel;
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public void Torque(float torque) {
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wheelCollider.motorTorque = torque;
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}
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public void Brake(float torque) {
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wheelCollider.brakeTorque = torque;
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}
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}
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public TrailerWheel[] trailerWheels; // All trailer wheels.
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public Transform COM; // Center of mass.
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public GameObject legs; // Legs will be enabled when trailer is detached.
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private bool isSleeping = false; // Is rigidbody of the trailer is sleeping?
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private float timer = 0f; // Timer for attach / detach process.
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public bool attached = false; // Is this trailer attached now?
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public bool brakeWhenDetached = false;
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public float brakeForce = 5000f;
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/// <summary>
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/// Joint restrictions of the trailer.
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/// </summary>
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private class JointRestrictions {
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public ConfigurableJointMotion motionX;
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public ConfigurableJointMotion motionY;
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public ConfigurableJointMotion motionZ;
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public ConfigurableJointMotion angularMotionX;
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public ConfigurableJointMotion angularMotionY;
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public ConfigurableJointMotion angularMotionZ;
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public void Get(ConfigurableJoint configurableJoint) {
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motionX = configurableJoint.xMotion;
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motionY = configurableJoint.yMotion;
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motionZ = configurableJoint.zMotion;
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angularMotionX = configurableJoint.angularXMotion;
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angularMotionY = configurableJoint.angularYMotion;
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angularMotionZ = configurableJoint.angularZMotion;
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}
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public void Set(ConfigurableJoint configurableJoint) {
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configurableJoint.xMotion = motionX;
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configurableJoint.yMotion = motionY;
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configurableJoint.zMotion = motionZ;
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configurableJoint.angularXMotion = angularMotionX;
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configurableJoint.angularYMotion = angularMotionY;
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configurableJoint.angularZMotion = angularMotionZ;
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}
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public void Reset(ConfigurableJoint configurableJoint) {
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configurableJoint.xMotion = ConfigurableJointMotion.Free;
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configurableJoint.yMotion = ConfigurableJointMotion.Free;
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configurableJoint.zMotion = ConfigurableJointMotion.Free;
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configurableJoint.angularXMotion = ConfigurableJointMotion.Free;
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configurableJoint.angularYMotion = ConfigurableJointMotion.Free;
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configurableJoint.angularZMotion = ConfigurableJointMotion.Free;
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}
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}
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private JointRestrictions jointRestrictions = new JointRestrictions();
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private RCC_Light[] lights;
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private void Start() {
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rigid = GetComponent<Rigidbody>(); // Getting rigidbody.
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joint = GetComponentInParent<ConfigurableJoint>(); // Getting configurable joint.
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jointRestrictions.Get(joint); // Getting current limitations of the joint.
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// Fixing stutering bug of the rigid.
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rigid.interpolation = RigidbodyInterpolation.None;
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rigid.interpolation = RigidbodyInterpolation.Interpolate;
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joint.configuredInWorldSpace = true;
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// If joint is connected as default, attach the trailer. Otherwise detach.
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if (joint.connectedBody) {
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AttachTrailer(joint.connectedBody.gameObject.GetComponent<RCC_CarControllerV3>());
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} else {
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carController = null;
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joint.connectedBody = null;
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jointRestrictions.Reset(joint);
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}
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}
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private void FixedUpdate() {
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attached = joint.connectedBody; // Is trailer attached now?
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rigid.centerOfMass = transform.InverseTransformPoint(COM.transform.position); // Setting center of mass.
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// Applying torque to the wheels.
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for (int i = 0; i < trailerWheels.Length; i++) {
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if (carController) {
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trailerWheels[i].Torque(carController.throttleInput * (attached ? 1f : 0f));
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trailerWheels[i].Brake((attached ? 0f : 5000f));
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} else {
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trailerWheels[i].Torque(0f);
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trailerWheels[i].Brake((brakeWhenDetached ? brakeForce : 0f));
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}
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}
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}
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private void Update() {
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// If trailer is not moving, enable sleeping mode.
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if (rigid.velocity.magnitude < .01f && Mathf.Abs(rigid.angularVelocity.magnitude) < .01f)
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isSleeping = true;
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else
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isSleeping = false;
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// Timer was used for attach/detach delay.
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if (timer > 0f)
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timer -= Time.deltaTime;
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timer = Mathf.Clamp01(timer); // Clamping timer between 0f - 1f.
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WheelAlign(); // Aligning wheel model position and rotation.
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}
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/// <summary>
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/// Aligning wheel model position and rotation.
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/// </summary>
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private void WheelAlign() {
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// If trailer is sleeping, return.
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if (isSleeping)
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return;
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for (int i = 0; i < trailerWheels.Length; i++) {
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// Return if no wheel model selected.
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if (!trailerWheels[i].wheelModel) {
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Debug.LogError(transform.name + " wheel of the " + transform.name + " is missing wheel model. This wheel is disabled");
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enabled = false;
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return;
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}
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// Locating correct position and rotation for the wheel.
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Vector3 wheelPosition;
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Quaternion wheelRotation;
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trailerWheels[i].wheelCollider.GetWorldPose(out wheelPosition, out wheelRotation);
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// Assigning position and rotation to the wheel model.
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trailerWheels[i].wheelModel.transform.SetPositionAndRotation(wheelPosition, wheelRotation);
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}
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}
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/// <summary>
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/// Detach the trailer.
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/// </summary>
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public void DetachTrailer() {
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foreach (RCC_Light item in lights) {
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item.CarController = null;
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}
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// Resetting attachedTrailer of car controller.
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carController.attachedTrailer = null;
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carController = null;
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lights = null;
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timer = 1f;
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joint.connectedBody = null;
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jointRestrictions.Reset(joint);
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if (legs)
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legs.SetActive(true);
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if (RCC_SceneManager.Instance.activePlayerCamera && RCC_SceneManager.Instance.activePlayerCamera.TPSAutoFocus)
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StartCoroutine(RCC_SceneManager.Instance.activePlayerCamera.AutoFocus());
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}
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/// <summary>
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/// Attach the trailer.
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/// </summary>
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/// <param name="vehicle"></param>
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public void AttachTrailer(RCC_CarControllerV3 vehicle) {
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// If delay is short, return.
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if (timer > 0)
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return;
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carController = vehicle; // Assigning car controller.
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lights = GetComponentsInChildren<RCC_Light>(); // Getting car controller lights.
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timer = 1f; // Setting timer.
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joint.connectedBody = vehicle.Rigid; // Connecting joint.
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//joint.autoConfigureConnectedAnchor = false; // Setting auto configuration off of the joint.
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//Vector3 jointVector = joint.connectedAnchor; // Resetting X axis of the connected anchor on attachment.
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//jointVector.x = 0f;
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//joint.connectedAnchor = jointVector;
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jointRestrictions.Set(joint); // Enabling limitations of the joint.
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// If trailer has legs, disable on attach.
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if (legs)
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legs.SetActive(false);
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// Initializing lights of the trailer. Parent car controller will take control of them.
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foreach (RCC_Light item in lights) {
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item.CarController = carController;
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}
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// Assigning attachedTrailer of car controller.
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vehicle.attachedTrailer = this;
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rigid.isKinematic = false;
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// If autofocus is enabled on RCC Camera, run it.
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if (RCC_SceneManager.Instance.activePlayerCamera && RCC_SceneManager.Instance.activePlayerCamera.TPSAutoFocus)
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StartCoroutine(RCC_SceneManager.Instance.activePlayerCamera.AutoFocus(transform, carController.transform));
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}
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private void Reset() {
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if (COM == null) {
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GameObject com = new GameObject("COM");
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com.transform.SetParent(transform, false);
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com.transform.localPosition = Vector3.zero;
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com.transform.localRotation = Quaternion.identity;
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com.transform.localScale = Vector3.one;
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COM = com.transform;
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}
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if (transform.Find("Wheel Models") == null) {
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GameObject com = new GameObject("Wheel Models");
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com.transform.SetParent(transform, false);
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com.transform.localPosition = Vector3.zero;
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com.transform.localRotation = Quaternion.identity;
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com.transform.localScale = Vector3.one;
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}
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if (transform.Find("Wheel Colliders") == null) {
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GameObject com = new GameObject("Wheel Colliders");
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com.transform.SetParent(transform, false);
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com.transform.localPosition = Vector3.zero;
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com.transform.localRotation = Quaternion.identity;
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com.transform.localScale = Vector3.one;
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}
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GetComponent<Rigidbody>().mass = 5000;
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}
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}
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