Unity3D研究之第一人称第三人称角色控制组件修改-淘宝店铺头像图片免费-程序博客网 (2024)

[代码]c#/cpp/oc代码：

using UnityEngine;using System.Collections;/** * @Author : www.xuanyusong.com */[RequireComponent(typeof(CharacterController))][AddComponentMenu("Character/Character Motor")]public class CharacterMotor : MonoBehaviour {// Does this script currently respond to input?public bool canControl = true;public bool useFixedUpdate = true;// For the next variables, @System.NonSerialized tells Unity to not serialize the variable or show it in the inspector view.// Very handy for organization!// The current global direction we want the character to move in.[System.NonSerialized]public Vector3 inputMoveDirection = Vector3.zero;// Is the jump button held down? We use this interface instead of checking// for the jump button directly so this script can also be used by AIs.[System.NonSerialized]public bool inputJump = false;[System.Serializable]public class CharacterMotorMovement{// The maximum horizontal speed when movingpublic float maxForwardSpeed = 10.0f;public float maxSidewaysSpeed = 10.0f;public float maxBackwardsSpeed = 10.0f;// Curve for multiplying speed based on slope (negative = downwards)public AnimationCurve slopeSpeedMultiplier = new AnimationCurve(new Keyframe(-90, 1), new Keyframe(0, 1), new Keyframe(90, 0));// How fast does the character change speeds? Higher is faster.public float maxGroundAcceleration = 30.0f;public float maxAirAcceleration = 20.0f;// The gravity for the characterpublic float gravity = 10.0f;public float maxFallSpeed = 20.0f;// For the next variables, @System.NonSerialized tells Unity to not serialize the variable or show it in the inspector view.// Very handy for organization!// The last collision flags returned from controller.Move[System.NonSerialized]public CollisionFlags collisionFlags; // We will keep track of the character's current velocity,[System.NonSerialized]public Vector3 velocity;// This keeps track of our current velocity while we're not grounded[System.NonSerialized]public Vector3 frameVelocity = Vector3.zero;[System.NonSerialized]public Vector3 hitPoint = Vector3.zero;[System.NonSerialized]public Vector3 lastHitPoint = new Vector3(Mathf.Infinity, 0, 0);}public CharacterMotorMovement movement = new CharacterMotorMovement();public enum MovementTransferOnJump {None, // The jump is not affected by velocity of floor at all.InitTransfer, // Jump gets its initial velocity from the floor, then gradualy comes to a stop.PermaTransfer, // Jump gets its initial velocity from the floor, and keeps that velocity until landing.PermaLocked // Jump is relative to the movement of the last touched floor and will move together with that floor.}// We will contain all the jumping related variables in one helper class for clarity.[System.Serializable]public class CharacterMotorJumping {// Can the character jump?public bool enabled = true;// How high do we jump when pressing jump and letting go immediatelypublic float baseHeight = 1.0f;// We add extraHeight units (meters) on top when holding the button down longer while jumpingpublic float extraHeight = 4.1f;// How much does the character jump out perpendicular to the surface on walkable surfaces?// 0 means a fully vertical jump and 1 means fully perpendicular.public float perpAmount = 0.0f;// How much does the character jump out perpendicular to the surface on too steep surfaces?// 0 means a fully vertical jump and 1 means fully perpendicular.public float steepPerpAmount = 0.5f;// For the next variables, @System.NonSerialized tells Unity to not serialize the variable or show it in the inspector view.// Very handy for organization!// Are we jumping? (Initiated with jump button and not grounded yet)// To see if we are just in the air (initiated by jumping OR falling) see the grounded variable.[System.NonSerialized]public bool jumping = false;[System.NonSerialized]public bool holdingJumpButton = false;// the time we jumped at (Used to determine for how long to apply extra jump power after jumping.)[System.NonSerialized]public float lastStartTime = 0.0f;[System.NonSerialized]public float lastButtonDownTime = -100f;[System.NonSerialized]public Vector3 jumpDir = Vector3.up;}public CharacterMotorJumping jumping = new CharacterMotorJumping();[System.Serializable]public class CharacterMotorMovingPlatform {public bool enabled = true;public MovementTransferOnJump movementTransfer = MovementTransferOnJump.PermaTransfer;[System.NonSerialized]public Transform hitPlatform;[System.NonSerialized]public Transform activePlatform;[System.NonSerialized]public Vector3 activeLocalPoint;[System.NonSerialized]public Vector3 activeGlobalPoint;[System.NonSerialized]public Quaternion activeLocalRotation;[System.NonSerialized]public Quaternion activeGlobalRotation;[System.NonSerialized]public Matrix4x4 lastMatrix;[System.NonSerialized]public Vector3 platformVelocity;[System.NonSerialized]public bool newPlatform;}public CharacterMotorMovingPlatform movingPlatform = new CharacterMotorMovingPlatform();[System.Serializable]public class CharacterMotorSliding {// Does the character slide on too steep surfaces?public bool enabled = true;// How fast does the character slide on steep surfaces?public float slidingSpeed = 15f;// How much can the player control the sliding direction?// If the value is 0.5 the player can slide sideways with half the speed of the downwards sliding speed.public float sidewaysControl = 1.0f;// How much can the player influence the sliding speed?// If the value is 0.5 the player can speed the sliding up to 150% or slow it down to 50%.public float speedControl = 0.4f;}public CharacterMotorSliding sliding = new CharacterMotorSliding();[System.NonSerialized]public bool grounded = true;[System.NonSerialized]public Vector3 groundNormal = Vector3.zero;private Vector3 lastGroundNormal = Vector3.zero;private Transform tr;private CharacterController controller ;void Awake () {controller = GetComponent (); tr = transform; } private void UpdateFunction () { // We copy the actual velocity into a temporary variable that we can manipulate. Vector3 velocity = movement.velocity; // Update velocity based on input velocity = ApplyInputVelocityChange(velocity); // Apply gravity and jumping force velocity = ApplyGravityAndJumping (velocity); // Moving platform support Vector3 moveDistance = Vector3.zero; if (MoveWithPlatform()) { Vector3 newGlobalPoint = movingPlatform.activePlatform.TransformPoint(movingPlatform.activeLocalPoint); moveDistance = (newGlobalPoint - movingPlatform.activeGlobalPoint); if (moveDistance != Vector3.zero) controller.Move(moveDistance); // Support moving platform rotation as well: Quaternion newGlobalRotation = movingPlatform.activePlatform.rotation * movingPlatform.activeLocalRotation; Quaternion rotationDiff = newGlobalRotation * Quaternion.Inverse(movingPlatform.activeGlobalRotation); var yRotation = rotationDiff.eulerAngles.y; if (yRotation != 0) { // Prevent rotation of the local up vector tr.Rotate(0, yRotation, 0); } } // Save lastPosition for velocity calculation. Vector3 lastPosition = tr.position; // We always want the movement to be framerate independent. Multiplying by Time.deltaTime does this. Vector3 currentMovementOffset = velocity * Time.deltaTime; // Find out how much we need to push towards the ground to avoid loosing grouning // when walking down a step or over a sharp change in slope. float pushDownOffset = Mathf.Max(controller.stepOffset, new Vector3(currentMovementOffset.x, 0, currentMovementOffset.z).magnitude); if (grounded) currentMovementOffset -= pushDownOffset * Vector3.up; // Reset variables that will be set by collision function movingPlatform.hitPlatform = null; groundNormal = Vector3.zero; // Move our character! movement.collisionFlags = controller.Move (currentMovementOffset); movement.lastHitPoint = movement.hitPoint; lastGroundNormal = groundNormal; if (movingPlatform.enabled && movingPlatform.activePlatform != movingPlatform.hitPlatform) { if (movingPlatform.hitPlatform != null) { movingPlatform.activePlatform = movingPlatform.hitPlatform; movingPlatform.lastMatrix = movingPlatform.hitPlatform.localToWorldMatrix; movingPlatform.newPlatform = true; } } // Calculate the velocity based on the current and previous position. // This means our velocity will only be the amount the character actually moved as a result of collisions. Vector3 oldHVelocity = new Vector3(velocity.x, 0, velocity.z); movement.velocity = (tr.position - lastPosition) / Time.deltaTime; Vector3 newHVelocity = new Vector3(movement.velocity.x, 0, movement.velocity.z); // The CharacterController can be moved in unwanted directions when colliding with things. // We want to prevent this from influencing the recorded velocity. if (oldHVelocity == Vector3.zero) { movement.velocity = new Vector3(0, movement.velocity.y, 0); } else { float projectedNewVelocity = Vector3.Dot(newHVelocity, oldHVelocity) / oldHVelocity.sqrMagnitude; movement.velocity = oldHVelocity * Mathf.Clamp01(projectedNewVelocity) + movement.velocity.y * Vector3.up; } if (movement.velocity.y < velocity.y - 0.001) { if (movement.velocity.y < 0) { // Something is forcing the CharacterController down faster than it should. // Ignore this movement.velocity.y = velocity.y; } else { // The upwards movement of the CharacterController has been blocked. // This is treated like a ceiling collision - stop further jumping here. jumping.holdingJumpButton = false; } } // We were grounded but just loosed grounding if (grounded && !IsGroundedTest()) { grounded = false; // Apply inertia from platform if (movingPlatform.enabled && (movingPlatform.movementTransfer == MovementTransferOnJump.InitTransfer || movingPlatform.movementTransfer == MovementTransferOnJump.PermaTransfer) ) { movement.frameVelocity = movingPlatform.platformVelocity; movement.velocity += movingPlatform.platformVelocity; } SendMessage("OnFall", SendMessageOptions.DontRequireReceiver); // We pushed the character down to ensure it would stay on the ground if there was any. // But there wasn't so now we cancel the downwards offset to make the fall smoother. tr.position += pushDownOffset * Vector3.up; } // We were not grounded but just landed on something else if (!grounded && IsGroundedTest()) { grounded = true; jumping.jumping = false; SubtractNewPlatformVelocity(); SendMessage("OnLand", SendMessageOptions.DontRequireReceiver); } // Moving platforms support if (MoveWithPlatform()) { // Use the center of the lower half sphere of the capsule as reference point. // This works best when the character is standing on moving tilting platforms. movingPlatform.activeGlobalPoint = tr.position + Vector3.up * (controller.center.y - controller.height*0.5f + controller.radius); movingPlatform.activeLocalPoint = movingPlatform.activePlatform.InverseTransformPoint(movingPlatform.activeGlobalPoint); // Support moving platform rotation as well: movingPlatform.activeGlobalRotation = tr.rotation; movingPlatform.activeLocalRotation = Quaternion.Inverse(movingPlatform.activePlatform.rotation) * movingPlatform.activeGlobalRotation; } } void FixedUpdate () { if (movingPlatform.enabled) { if (movingPlatform.activePlatform != null) { if (!movingPlatform.newPlatform) { Vector3 lastVelocity = movingPlatform.platformVelocity; movingPlatform.platformVelocity = ( movingPlatform.activePlatform.localToWorldMatrix.MultiplyPoint3x4(movingPlatform.activeLocalPoint) - movingPlatform.lastMatrix.MultiplyPoint3x4(movingPlatform.activeLocalPoint) ) / Time.deltaTime; } movingPlatform.lastMatrix = movingPlatform.activePlatform.localToWorldMatrix; movingPlatform.newPlatform = false; } else { movingPlatform.platformVelocity = Vector3.zero; } } if (useFixedUpdate) UpdateFunction(); } void Update () { if (!useFixedUpdate) UpdateFunction(); } private Vector3 ApplyInputVelocityChange (Vector3 velocity) { if (!canControl) inputMoveDirection = Vector3.zero; // Find desired velocity Vector3 desiredVelocity; if (grounded && TooSteep()) { // The direction we're sliding in desiredVelocity = new Vector3(groundNormal.x, 0, groundNormal.z).normalized; // Find the input movement direction projected onto the sliding direction var projectedMoveDir = Vector3.Project(inputMoveDirection, desiredVelocity); // Add the sliding direction, the spped control, and the sideways control vectors desiredVelocity = desiredVelocity + projectedMoveDir * sliding.speedControl + (inputMoveDirection - projectedMoveDir) * sliding.sidewaysControl; // Multiply with the sliding speed desiredVelocity *= sliding.slidingSpeed; } else desiredVelocity = GetDesiredHorizontalVelocity(); if (movingPlatform.enabled && movingPlatform.movementTransfer == MovementTransferOnJump.PermaTransfer) { desiredVelocity += movement.frameVelocity; desiredVelocity.y = 0; } if (grounded) desiredVelocity = AdjustGroundVelocityToNormal(desiredVelocity, groundNormal); else velocity.y = 0; // Enforce max velocity change float maxVelocityChange = GetMaxAcceleration(grounded) * Time.deltaTime; Vector3 velocityChangeVector = (desiredVelocity - velocity); if (velocityChangeVector.sqrMagnitude > maxVelocityChange * maxVelocityChange) { velocityChangeVector = velocityChangeVector.normalized * maxVelocityChange; } // If we're in the air and don't have control, don't apply any velocity change at all. // If we're on the ground and don't have control we do apply it - it will correspond to friction. if (grounded || canControl) velocity += velocityChangeVector; if (grounded) { // When going uphill, the CharacterController will automatically move up by the needed amount. // Not moving it upwards manually prevent risk of lifting off from the ground. // When going downhill, DO move down manually, as gravity is not enough on steep hills. velocity.y = Mathf.Min(velocity.y, 0); } return velocity; } private Vector3 ApplyGravityAndJumping (Vector3 velocity) { if (!inputJump || !canControl) { jumping.holdingJumpButton = false; jumping.lastButtonDownTime = -100; } if (inputJump && jumping.lastButtonDownTime < 0 && canControl) jumping.lastButtonDownTime = Time.time; if (grounded) velocity.y = Mathf.Min(0, velocity.y) - movement.gravity * Time.deltaTime; else { velocity.y = movement.velocity.y - movement.gravity * Time.deltaTime; // When jumping up we don't apply gravity for some time when the user is holding the jump button. // This gives more control over jump height by pressing the button longer. if (jumping.jumping && jumping.holdingJumpButton) { // Calculate the duration that the extra jump force should have effect. // If we're still less than that duration after the jumping time, apply the force. if (Time.time < jumping.lastStartTime + jumping.extraHeight / CalculateJumpVerticalSpeed(jumping.baseHeight)) { // Negate the gravity we just applied, except we push in jumpDir rather than jump upwards. velocity += jumping.jumpDir * movement.gravity * Time.deltaTime; } } // Make sure we don't fall any faster than maxFallSpeed. This gives our character a terminal velocity. velocity.y = Mathf.Max (velocity.y, -movement.maxFallSpeed); } if (grounded) { // Jump only if the jump button was pressed down in the last 0.2 seconds. // We use this check instead of checking if it's pressed down right now // because players will often try to jump in the exact moment when hitting the ground after a jump // and if they hit the button a fraction of a second too soon and no new jump happens as a consequence, // it's confusing and it feels like the game is buggy. if (jumping.enabled && canControl && (Time.time - jumping.lastButtonDownTime < 0.2)) { grounded = false; jumping.jumping = true; jumping.lastStartTime = Time.time; jumping.lastButtonDownTime = -100; jumping.holdingJumpButton = true; // Calculate the jumping direction if (TooSteep()) jumping.jumpDir = Vector3.Slerp(Vector3.up, groundNormal, jumping.steepPerpAmount); else jumping.jumpDir = Vector3.Slerp(Vector3.up, groundNormal, jumping.perpAmount); // Apply the jumping force to the velocity. Cancel any vertical velocity first. velocity.y = 0; velocity += jumping.jumpDir * CalculateJumpVerticalSpeed (jumping.baseHeight); // Apply inertia from platform if (movingPlatform.enabled && (movingPlatform.movementTransfer == MovementTransferOnJump.InitTransfer || movingPlatform.movementTransfer == MovementTransferOnJump.PermaTransfer) ) { movement.frameVelocity = movingPlatform.platformVelocity; velocity += movingPlatform.platformVelocity; } SendMessage("OnJump", SendMessageOptions.DontRequireReceiver); } else { jumping.holdingJumpButton = false; } } return velocity; } void OnControllerColliderHit (ControllerColliderHit hit) { if (hit.normal.y > 0 && hit.normal.y > groundNormal.y && hit.moveDirection.y < 0) { if ((hit.point - movement.lastHitPoint).sqrMagnitude > 0.001 || lastGroundNormal == Vector3.zero) groundNormal = hit.normal; else groundNormal = lastGroundNormal; movingPlatform.hitPlatform = hit.collider.transform; movement.hitPoint = hit.point; movement.frameVelocity = Vector3.zero; } } private IEnumerator SubtractNewPlatformVelocity () { // When landing, subtract the velocity of the new ground from the character's velocity // since movement in ground is relative to the movement of the ground. if (movingPlatform.enabled && (movingPlatform.movementTransfer == MovementTransferOnJump.InitTransfer || movingPlatform.movementTransfer == MovementTransferOnJump.PermaTransfer) ) { // If we landed on a new platform, we have to wait for two FixedUpdates // before we know the velocity of the platform under the character if (movingPlatform.newPlatform) { Transform platform = movingPlatform.activePlatform; yield return new WaitForFixedUpdate(); yield return new WaitForFixedUpdate(); if (grounded && platform == movingPlatform.activePlatform) yield return 1; } movement.velocity -= movingPlatform.platformVelocity; } } private bool MoveWithPlatform () { return ( movingPlatform.enabled && (grounded || movingPlatform.movementTransfer == MovementTransferOnJump.PermaLocked) && movingPlatform.activePlatform != null ); } private Vector3 GetDesiredHorizontalVelocity () { // Find desired velocity Vector3 desiredLocalDirection = tr.InverseTransformDirection(inputMoveDirection); float maxSpeed = MaxSpeedInDirection(desiredLocalDirection); if (grounded) { // Modify max speed on slopes based on slope speed multiplier curve var movementSlopeAngle = Mathf.Asin(movement.velocity.normalized.y) * Mathf.Rad2Deg; maxSpeed *= movement.slopeSpeedMultiplier.Evaluate(movementSlopeAngle); } return tr.TransformDirection(desiredLocalDirection * maxSpeed); } private Vector3 AdjustGroundVelocityToNormal (Vector3 hVelocity, Vector3 groundNormal) { Vector3 sideways = Vector3.Cross(Vector3.up, hVelocity); return Vector3.Cross(sideways, groundNormal).normalized * hVelocity.magnitude; } private bool IsGroundedTest () { return (groundNormal.y > 0.01); } float GetMaxAcceleration (bool grounded) { // Maximum acceleration on ground and in air if (grounded) return movement.maxGroundAcceleration; else return movement.maxAirAcceleration; } float CalculateJumpVerticalSpeed (float targetJumpHeight) { // From the jump height and gravity we deduce the upwards speed // for the character to reach at the apex. return Mathf.Sqrt (2 * targetJumpHeight * movement.gravity); } bool IsJumping () { return jumping.jumping; } bool IsSliding () { return (grounded && sliding.enabled && TooSteep()); } bool IsTouchingCeiling () { return (movement.collisionFlags & CollisionFlags.CollidedAbove) != 0; } bool IsGrounded () { return grounded; } bool TooSteep () { return (groundNormal.y <= Mathf.Cos(controller.slopeLimit * Mathf.Deg2Rad)); } Vector3 GetDirection () { return inputMoveDirection; } void SetControllable (bool controllable) { canControl = controllable; } // Project a direction onto elliptical quater segments based on forward, sideways, and backwards speed. // The function returns the length of the resulting vector. float MaxSpeedInDirection (Vector3 desiredMovementDirection) { if (desiredMovementDirection == Vector3.zero) return 0; else { float zAxisEllipseMultiplier = (desiredMovementDirection.z > 0 ? movement.maxForwardSpeed : movement.maxBackwardsSpeed) / movement.maxSidewaysSpeed; Vector3 temp = new Vector3(desiredMovementDirection.x, 0, desiredMovementDirection.z / zAxisEllipseMultiplier).normalized; float length = new Vector3(temp.x, 0, temp.z * zAxisEllipseMultiplier).magnitude * movement.maxSidewaysSpeed; return length; } } void SetVelocity (Vector3 velocity) { grounded = false; movement.velocity = velocity; movement.frameVelocity = Vector3.zero; SendMessage("OnExternalVelocity"); } // Require a character controller to be attached to the same game object //@script RequireComponent (CharacterController) //@script AddComponentMenu ("Character/Character Motor") }

[代码]c#/cpp/oc代码：

using UnityEngine;using System.Collections;/** * @Author : www.xuanyusong.com */[RequireComponent(typeof(CharacterMotor))][AddComponentMenu("Character/FPS Input Controller")]public class FPSInputController : MonoBehaviour {private CharacterMotor motor ;// Use this for initializationvoid Awake () {motor = GetComponent(); } // Update is called once per frame void Update () { // Get the input vector from kayboard or analog stick Vector3 directionVector = new Vector3(Input.GetAxis("Horizontal"), 0, Input.GetAxis("Vertical")); if (directionVector != Vector3.zero) { // Get the length of the directon vector and then normalize it // Dividing by the length is cheaper than normalizing when we already have the length anyway var directionLength = directionVector.magnitude; directionVector = directionVector / directionLength; // Make sure the length is no bigger than 1 directionLength = Mathf.Min(1, directionLength); // Make the input vector more sensitive towards the extremes and less sensitive in the middle // This makes it easier to control slow speeds when using analog sticks directionLength = directionLength * directionLength; // Multiply the normalized direction vector by the modified length directionVector = directionVector * directionLength; } // Apply the direction to the CharacterMotor motor.inputMoveDirection = transform.rotation * directionVector; motor.inputJump = Input.GetButton("Jump"); } }

[代码]c#/cpp/oc代码：

using UnityEngine;using System.Collections;/** * @Author : www.xuanyusong.com */[RequireComponent(typeof(CharacterController))][AddComponentMenu("Character/Platform Input Controller")]public class PlatformInputController : MonoBehaviour {public bool autoRotate = true;public float maxRotationSpeed = 360;private CharacterMotor motor ;// Use this for initializationvoid Awake () {motor = GetComponent(); } // Update is called once per frame void Update () { // Get the input vector from kayboard or analog stick Vector3 directionVector = new Vector3(Input.GetAxis("Horizontal"), Input.GetAxis("Vertical"), 0); if (directionVector != Vector3.zero) { // Get the length of the directon vector and then normalize it // Dividing by the length is cheaper than normalizing when we already have the length anyway var directionLength = directionVector.magnitude; directionVector = directionVector / directionLength; // Make sure the length is no bigger than 1 directionLength = Mathf.Min(1, directionLength); // Make the input vector more sensitive towards the extremes and less sensitive in the middle // This makes it easier to control slow speeds when using analog sticks directionLength = directionLength * directionLength; // Multiply the normalized direction vector by the modified length directionVector = directionVector * directionLength; } // Rotate the input vector into camera space so up is camera's up and right is camera's right directionVector = Camera.main.transform.rotation * directionVector; // Rotate input vector to be perpendicular to character's up vector var camToCharacterSpace = Quaternion.FromToRotation(-Camera.main.transform.forward, transform.up); directionVector = (camToCharacterSpace * directionVector); // Apply the direction to the CharacterMotor motor.inputMoveDirection = directionVector; motor.inputJump = Input.GetButton("Jump"); // Set rotation to the move direction if (autoRotate && directionVector.sqrMagnitude > 0.01) { Vector3 newForward = ConstantSlerp( transform.forward, directionVector, maxRotationSpeed * Time.deltaTime ); newForward = ProjectOntoPlane(newForward, transform.up); transform.rotation = Quaternion.LookRotation(newForward, transform.up); } } Vector3 ProjectOntoPlane (Vector3 v, Vector3 normal) { return v - Vector3.Project(v, normal); } Vector3 ConstantSlerp (Vector3 from, Vector3 to, float angle) { float value = Mathf.Min(1, angle / Vector3.Angle(from, to)); return Vector3.Slerp(from, to, value); } }

[代码]c#/cpp/oc代码：

using UnityEngine;using System.Collections;/** * @Author : www.xuanyusong.com */public class ThirdPersonCamera : MonoBehaviour {public Transform cameraTransform;private Transform _target;public float distance = 7.0f;public float height = 3.0f;public float angularSmoothLag = 0.3f;public float angularMaxSpeed = 15.0f;public float heightSmoothLag = 0.3f;public float snapSmoothLag = 0.2f;public float snapMaxSpeed = 720.0f;public float clampHeadPositionScreenSpace = 0.75f;public float lockCameraTimeout = 0.2f;private Vector3 headOffset = Vector3.zero;private Vector3 centerOffset = Vector3.zero;private float heightVelocity = 0.0f;private float angleVelocity = 0.0f;private bool snap = false;private ThirdPersonController controller;private float targetHeight = 100000.0f; void Awake (){if(!cameraTransform && Camera.main)cameraTransform = Camera.main.transform;if(!cameraTransform) {Debug.Log("Please assign a camera to the ThirdPersonCamera script.");enabled = false;}_target = transform;if (_target){controller = _target.GetComponent(); } if (controller) { CharacterController characterController = (CharacterController)_target.collider; centerOffset = characterController.bounds.center - _target.position; headOffset = centerOffset; headOffset.y = characterController.bounds.max.y - _target.position.y; } else Debug.Log("Please assign a target to the camera that has a ThirdPersonController script attached."); Cut(_target, centerOffset); } void DebugDrawStuff () { Debug.DrawLine(_target.position, _target.position + headOffset); } float AngleDistance (float a , float b ) { a = Mathf.Repeat(a, 360); b = Mathf.Repeat(b, 360); return Mathf.Abs(b - a); } void Apply (Transform dummyTarget, Vector3 dummyCenter) { // Early out if we don't have a target if (!controller) return; Vector3 targetCenter = _target.position + centerOffset; Vector3 targetHead = _target.position + headOffset; //DebugDrawStuff(); // Calculate the current & target rotation angles float originalTargetAngle = _target.eulerAngles.y; float currentAngle = cameraTransform.eulerAngles.y; // Adjust real target angle when camera is locked float targetAngle = originalTargetAngle; // When pressing Fire2 (alt) the camera will snap to the target direction real quick. // It will stop snapping when it reaches the target if (Input.GetButton("Fire2")) snap = true; if (snap) { // We are close to the target, so we can stop snapping now! if (AngleDistance (currentAngle, originalTargetAngle) < 3.0) snap = false; currentAngle = Mathf.SmoothDampAngle(currentAngle, targetAngle, ref angleVelocity, snapSmoothLag, snapMaxSpeed); } // Normal camera motion else { if (controller.GetLockCameraTimer () < lockCameraTimeout) { targetAngle = currentAngle; } // Lock the camera when moving backwards! // * It is really confusing to do 180 degree spins when turning around. if (AngleDistance (currentAngle, targetAngle) > 160 && controller.IsMovingBackwards ()) targetAngle += 180; currentAngle = Mathf.SmoothDampAngle(currentAngle, targetAngle, ref angleVelocity, angularSmoothLag, angularMaxSpeed); } // When jumping don't move camera upwards but only down! if (controller.IsJumping ()) { // We'd be moving the camera upwards, do that only if it's really high float newTargetHeight = targetCenter.y + height; if (newTargetHeight < targetHeight || newTargetHeight - targetHeight > 5) targetHeight = targetCenter.y + height; } // When walking always update the target height else { targetHeight = targetCenter.y + height; } // Damp the height float currentHeight = cameraTransform.position.y; currentHeight = Mathf.SmoothDamp (currentHeight, targetHeight, ref heightVelocity, heightSmoothLag); // Convert the angle into a rotation, by which we then reposition the camera Quaternion currentRotation = Quaternion.Euler (0, currentAngle, 0); // Set the position of the camera on the x-z plane to: // distance meters behind the target cameraTransform.position = targetCenter; cameraTransform.position += currentRotation * Vector3.back * distance; // Set the height of the camera cameraTransform.position = new Vector3(cameraTransform.position.x,currentHeight,cameraTransform.position.z); // Always look at the target SetUpRotation(targetCenter, targetHead); } void LateUpdate () { Apply (transform, Vector3.zero); } void Cut (Transform dummyTarget , Vector3 dummyCenter) { float oldHeightSmooth = heightSmoothLag; float oldSnapMaxSpeed = snapMaxSpeed; float oldSnapSmooth = snapSmoothLag; snapMaxSpeed = 10000; snapSmoothLag = 0.001f; heightSmoothLag = 0.001f; snap = true; Apply (transform, Vector3.zero); heightSmoothLag = oldHeightSmooth; snapMaxSpeed = oldSnapMaxSpeed; snapSmoothLag = oldSnapSmooth; } void SetUpRotation (Vector3 centerPos,Vector3 headPos) { // Now it's getting hairy. The devil is in the details here, the big issue is jumping of course. // * When jumping up and down we don't want to center the guy in screen space. // This is important to give a feel for how high you jump and avoiding large camera movements. // // * At the same time we dont want him to ever go out of screen and we want all rotations to be totally smooth. // // So here is what we will do: // // 1. We first find the rotation around the y axis. Thus he is always centered on the y-axis // 2. When grounded we make him be centered // 3. When jumping we keep the camera rotation but rotate the camera to get him back into view if his head is above some threshold // 4. When landing we smoothly interpolate towards centering him on screen Vector3 cameraPos = cameraTransform.position; Vector3 offsetToCenter = centerPos - cameraPos; // Generate base rotation only around y-axis Quaternion yRotation = Quaternion.LookRotation(new Vector3(offsetToCenter.x, 0, offsetToCenter.z)); Vector3 relativeOffset = Vector3.forward * distance + Vector3.down * height; cameraTransform.rotation = yRotation * Quaternion.LookRotation(relativeOffset); // Calculate the projected center position and top position in world space Ray centerRay = cameraTransform.camera.ViewportPointToRay(new Vector3(0.5f, 0.5f, 1f)); Ray topRay = cameraTransform.camera.ViewportPointToRay(new Vector3(0.5f, clampHeadPositionScreenSpace, 1f)); Vector3 centerRayPos = centerRay.GetPoint(distance); Vector3 topRayPos = topRay.GetPoint(distance); float centerToTopAngle = Vector3.Angle(centerRay.direction, topRay.direction); float heightToAngle = centerToTopAngle / (centerRayPos.y - topRayPos.y); float extraLookAngle = heightToAngle * (centerRayPos.y - centerPos.y); if (extraLookAngle < centerToTopAngle) { extraLookAngle = 0; } else { extraLookAngle = extraLookAngle - centerToTopAngle; cameraTransform.rotation *= Quaternion.Euler(-extraLookAngle, 0, 0); } } Vector3 GetCenterOffset () { return centerOffset; } }

[代码]c#/cpp/oc代码：

using UnityEngine;using System.Collections;/** * @Author : www.xuanyusong.com */[RequireComponent(typeof(CharacterController))]public class ThirdPersonController : MonoBehaviour {public AnimationClip idleAnimation ;public AnimationClip walkAnimation ;public AnimationClip runAnimation ;public AnimationClip jumpPoseAnimation;public float walkMaxAnimationSpeed = 0.75f;public float trotMaxAnimationSpeed = 1.0f;public float runMaxAnimationSpeed = 1.0f;public float jumpAnimationSpeed = 1.15f;public float landAnimationSpeed = 1.0f;private Animation _animation;enum CharacterState{Idle = 0,Walking = 1,Trotting = 2,Running = 3,Jumping = 4,}private CharacterState _characterState;// The speed when walkingfloat walkSpeed = 2.0f;// after trotAfterSeconds of walking we trot with trotSpeedfloat trotSpeed = 4.0f;// when pressing "Fire3" button (cmd) we start runningfloat runSpeed = 6.0f;float inAirControlAcceleration = 3.0f;// How high do we jump when pressing jump and letting go immediatelyfloat jumpHeight = 0.5f;// The gravity for the characterfloat gravity = 20.0f;// The gravity in controlled descent modefloat speedSmoothing = 10.0f;float rotateSpeed = 500.0f;float trotAfterSeconds = 3.0f;bool canJump = true;private float jumpRepeatTime = 0.05f;private float jumpTimeout = 0.15f;private float groundedTimeout = 0.25f;// The camera doesnt start following the target immediately but waits for a split second to avoid too much waving around.private float lockCameraTimer = 0.0f;// The current move direction in x-zprivate Vector3 moveDirection = Vector3.zero;// The current vertical speedprivate float verticalSpeed = 0.0f;// The current x-z move speedprivate float moveSpeed = 0.0f;// The last collision flags returned from controller.Moveprivate CollisionFlags collisionFlags; // Are we jumping? (Initiated with jump button and not grounded yet)private bool jumping = false;private bool jumpingReachedApex = false;// Are we moving backwards (This locks the camera to not do a 180 degree spin)private bool movingBack = false;// Is the user pressing any keys?private bool isMoving = false;// When did the user start walking (Used for going into trot after a while)private float walkTimeStart = 0.0f;// Last time the jump button was clicked downprivate float lastJumpButtonTime = -10.0f;// Last time we performed a jumpprivate float lastJumpTime = -1.0f;// the height we jumped from (Used to determine for how long to apply extra jump power after jumping.)private float lastJumpStartHeight = 0.0f;private Vector3 inAirVelocity = Vector3.zero;private float lastGroundedTime = 0.0f;private bool isControllable = true;void Awake (){moveDirection = transform.TransformDirection(Vector3.forward);_animation = GetComponent(); if(!_animation) Debug.Log("The character you would like to control doesn't have animations. Moving her might look weird."); /* public var idleAnimation : AnimationClip; public var walkAnimation : AnimationClip; public var runAnimation : AnimationClip; public var jumpPoseAnimation : AnimationClip; */ if(!idleAnimation) { _animation = null; Debug.Log("No idle animation found. Turning off animations."); } if(!walkAnimation) { _animation = null; Debug.Log("No walk animation found. Turning off animations."); } if(!runAnimation) { _animation = null; Debug.Log("No run animation found. Turning off animations."); } if(!jumpPoseAnimation && canJump) { _animation = null; Debug.Log("No jump animation found and the character has canJump enabled. Turning off animations."); } } void UpdateSmoothedMovementDirection () { Transform cameraTransform = Camera.main.transform; bool grounded = IsGrounded(); // Forward vector relative to the camera along the x-z plane Vector3 forward = cameraTransform.TransformDirection(Vector3.forward); forward.y = 0; forward = forward.normalized; // Right vector relative to the camera // Always orthogonal to the forward vector Vector3 right = new Vector3(forward.z, 0, -forward.x); float v = Input.GetAxisRaw("Vertical"); float h = Input.GetAxisRaw("Horizontal"); // Are we moving backwards or looking backwards if (v < -0.2f) movingBack = true; else movingBack = false; bool wasMoving = isMoving; isMoving = Mathf.Abs (h) > 0.1f || Mathf.Abs (v) > 0.1f; // Target direction relative to the camera Vector3 targetDirection = h * right + v * forward; // Grounded controls if (grounded) { // Lock camera for short period when transitioning moving & standing still lockCameraTimer += Time.deltaTime; if (isMoving != wasMoving) lockCameraTimer = 0.0f; // We store speed and direction seperately, // so that when the character stands still we still have a valid forward direction // moveDirection is always normalized, and we only update it if there is user input. if (targetDirection != Vector3.zero) { // If we are really slow, just snap to the target direction if (moveSpeed < walkSpeed * 0.9f && grounded) { moveDirection = targetDirection.normalized; } // Otherwise smoothly turn towards it else { moveDirection = Vector3.RotateTowards(moveDirection, targetDirection, rotateSpeed * Mathf.Deg2Rad * Time.deltaTime, 1000); moveDirection = moveDirection.normalized; } } // Smooth the speed based on the current target direction float curSmooth = speedSmoothing * Time.deltaTime; // Choose target speed //* We want to support analog input but make sure you cant walk faster diagonally than just forward or sideways float targetSpeed = Mathf.Min(targetDirection.magnitude, 1.0f); _characterState = CharacterState.Idle; // Pick speed modifier if (Input.GetKey (KeyCode.LeftShift) | Input.GetKey (KeyCode.RightShift)) { targetSpeed *= runSpeed; _characterState = CharacterState.Running; } else if (Time.time - trotAfterSeconds > walkTimeStart) { targetSpeed *= trotSpeed; _characterState = CharacterState.Trotting; } else { targetSpeed *= walkSpeed; _characterState = CharacterState.Walking; } moveSpeed = Mathf.Lerp(moveSpeed, targetSpeed, curSmooth); // Reset walk time start when we slow down if (moveSpeed < walkSpeed * 0.3f) walkTimeStart = Time.time; } // In air controls else { // Lock camera while in air if (jumping) lockCameraTimer = 0.0f; if (isMoving) inAirVelocity += targetDirection.normalized * Time.deltaTime * inAirControlAcceleration; } } void ApplyJumping () { // Prevent jumping too fast after each other if (lastJumpTime + jumpRepeatTime > Time.time) return; if (IsGrounded()) { // Jump // - Only when pressing the button down // - With a timeout so you can press the button slightly before landing if (canJump && Time.time < lastJumpButtonTime + jumpTimeout) { verticalSpeed = CalculateJumpVerticalSpeed (jumpHeight); SendMessage("DidJump", SendMessageOptions.DontRequireReceiver); } } } void ApplyGravity () { if (isControllable)// don't move player at all if not controllable. { // Apply gravity bool jumpButton = Input.GetButton("Jump"); // When we reach the apex of the jump we send out a message if (jumping && !jumpingReachedApex && verticalSpeed <= 0.0f) { jumpingReachedApex = true; SendMessage("DidJumpReachApex", SendMessageOptions.DontRequireReceiver); } if (IsGrounded ()) verticalSpeed = 0.0f; else verticalSpeed -= gravity * Time.deltaTime; } } float CalculateJumpVerticalSpeed (float targetJumpHeight) { // From the jump height and gravity we deduce the upwards speed // for the character to reach at the apex. return Mathf.Sqrt(2 * targetJumpHeight * gravity); } void DidJump () { jumping = true; jumpingReachedApex = false; lastJumpTime = Time.time; lastJumpStartHeight = transform.position.y; lastJumpButtonTime = -10; _characterState = CharacterState.Jumping; } void Update() { if (!isControllable) { // kill all inputs if not controllable. Input.ResetInputAxes(); } if (Input.GetButtonDown ("Jump")) { lastJumpButtonTime = Time.time; } UpdateSmoothedMovementDirection(); // Apply gravity // - extra power jump modifies gravity // - controlledDescent mode modifies gravity ApplyGravity (); // Apply jumping logic ApplyJumping (); // Calculate actual motion Vector3 movement = moveDirection * moveSpeed + new Vector3 (0, verticalSpeed, 0) + inAirVelocity; movement *= Time.deltaTime; // Move the controller CharacterController controller = GetComponent(); collisionFlags = controller.Move(movement); // ANIMATION sector if(_animation) { if(_characterState == CharacterState.Jumping) { if(!jumpingReachedApex) { _animation[jumpPoseAnimation.name].speed = jumpAnimationSpeed; _animation[jumpPoseAnimation.name].wrapMode = WrapMode.ClampForever; _animation.CrossFade(jumpPoseAnimation.name); } else { _animation[jumpPoseAnimation.name].speed = -landAnimationSpeed; _animation[jumpPoseAnimation.name].wrapMode = WrapMode.ClampForever; _animation.CrossFade(jumpPoseAnimation.name); } } else { if(controller.velocity.sqrMagnitude < 0.1f) { _animation.CrossFade(idleAnimation.name); } else { if(_characterState == CharacterState.Running) { _animation[runAnimation.name].speed = Mathf.Clamp(controller.velocity.magnitude, 0.0f, runMaxAnimationSpeed); _animation.CrossFade(runAnimation.name); } else if(_characterState == CharacterState.Trotting) { _animation[walkAnimation.name].speed = Mathf.Clamp(controller.velocity.magnitude, 0.0f, trotMaxAnimationSpeed); _animation.CrossFade(walkAnimation.name); } else if(_characterState == CharacterState.Walking) { _animation[walkAnimation.name].speed = Mathf.Clamp(controller.velocity.magnitude, 0.0f, walkMaxAnimationSpeed); _animation.CrossFade(walkAnimation.name); } } } } // ANIMATION sector // Set rotation to the move direction if (IsGrounded()) { transform.rotation = Quaternion.LookRotation(moveDirection); } else { Vector3 xzMove = movement; xzMove.y = 0; if (xzMove.sqrMagnitude > 0.001f) { transform.rotation = Quaternion.LookRotation(xzMove); } } // We are in jump mode but just became grounded if (IsGrounded()) { lastGroundedTime = Time.time; inAirVelocity = Vector3.zero; if (jumping) { jumping = false; SendMessage("DidLand", SendMessageOptions.DontRequireReceiver); } } } void OnControllerColliderHit (ControllerColliderHit hit ) { //Debug.DrawRay(hit.point, hit.normal); if (hit.moveDirection.y > 0.01f) return; } float GetSpeed () { return moveSpeed; } public bool IsJumping () { return jumping; } bool IsGrounded () { return (collisionFlags & CollisionFlags.CollidedBelow) != 0; } Vector3 GetDirection () { return moveDirection; } public bool IsMovingBackwards () { return movingBack; } public float GetLockCameraTimer () { return lockCameraTimer; } bool IsMoving () { return Mathf.Abs(Input.GetAxisRaw("Vertical")) + Mathf.Abs(Input.GetAxisRaw("Horizontal")) > 0.5f; } bool HasJumpReachedApex () { return jumpingReachedApex; } bool IsGroundedWithTimeout () { return lastGroundedTime + groundedTimeout > Time.time; } void Reset () { gameObject.tag = "Player"; } }

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