المشاركة الأصلية بواسطة Shiny Arrow
مشاهدة المشاركة
كود:
var speed = 3.0; var rotationSpeed = 5.0; var shootRange = 15.0; var attackRange = 30.0; var shootAngle = 4.0; var dontComeCloserRange = 5.0; var delayShootTime = 0.35; var pickNextWaypointDistance = 2.0; var target : Transform; private var lastShot = -10.0; // Make sure there is always a character controller @script RequireComponent (CharacterController) function Start () { // Auto setup player as target through tags if (target == null && GameObject.FindWithTag("Player")) target = GameObject.FindWithTag("Player").transform; Patrol(); } function Patrol () { var curWayPoint = AutoWayPoint.FindClosest(transform.position); while (true) { var waypointPosition = curWayPoint.transform.position; // Are we close to a waypoint? -> pick the next one! if (Vector3.Distance(waypointPosition, transform.position) < pickNextWaypointDistance) curWayPoint = PickNextWaypoint (curWayPoint); // Attack the player and wait until // - player is killed // - player is out of sight if (CanSeeTarget ()) yield StartCoroutine("AttackPlayer"); // Move towards our target MoveTowards(waypointPosition); yield; } } function CanSeeTarget () : boolean { if (Vector3.Distance(transform.position, target.position) > attackRange) return false; var hit : RaycastHit; if (Physics.Linecast (transform.position, target.position, hit)) return hit.transform == target; return false; } function Shoot () { // Start shoot animation animation.CrossFade("shoot", 0.3); // Wait until half the animation has played yield WaitForSeconds(delayShootTime); // Fire gun BroadcastMessage("Fire"); // Wait for the rest of the animation to finish yield WaitForSeconds(animation["shoot"].length - delayShootTime); } function AttackPlayer () { var lastVisiblePlayerPosition = target.position; while (true) { if (CanSeeTarget ()) { // Target is dead - stop hunting if (target == null) return; // Target is too far away - give up var distance = Vector3.Distance(transform.position, target.position); if (distance > shootRange * 3) return; lastVisiblePlayerPosition = target.position; if (distance > dontComeCloserRange) MoveTowards (lastVisiblePlayerPosition); else RotateTowards(lastVisiblePlayerPosition); var forward = transform.TransformDirection(Vector3.forward); var targetDirection = lastVisiblePlayerPosition - transform.position; targetDirection.y = 0; var angle = Vector3.Angle(targetDirection, forward); // Start shooting if close and play is in sight if (distance < shootRange && angle < shootAngle) yield StartCoroutine("Shoot"); } else { yield StartCoroutine("SearchPlayer", lastVisiblePlayerPosition); // Player not visible anymore - stop attacking if (!CanSeeTarget ()) return; } yield; } } function SearchPlayer (position : Vector3) { // Run towards the player but after 3 seconds timeout and go back to Patroling var timeout = 3.0; while (timeout > 0.0) { MoveTowards(position); // We found the player if (CanSeeTarget ()) return; timeout -= Time.deltaTime; yield; } } function RotateTowards (position : Vector3) { SendMessage("SetSpeed", 0.0); var direction = position - transform.position; direction.y = 0; if (direction.magnitude < 0.1) return; // Rotate towards the target transform.rotation = Quaternion.Slerp (transform.rotation, Quaternion.LookRotation(direction), rotationSpeed * Time.deltaTime); transform.eulerAngles = Vector3(0, transform.eulerAngles.y, 0); } function MoveTowards (position : Vector3) { var direction = position - transform.position; direction.y = 0; if (direction.magnitude < 0.5) { SendMessage("SetSpeed", 0.0); return; } // Rotate towards the target transform.rotation = Quaternion.Slerp (transform.rotation, Quaternion.LookRotation(direction), rotationSpeed * Time.deltaTime); transform.eulerAngles = Vector3(0, transform.eulerAngles.y, 0); // Modify speed so we slow down when we are not facing the target var forward = transform.TransformDirection(Vector3.forward); var speedModifier = Vector3.Dot(forward, direction.normalized); speedModifier = Mathf.Clamp01(speedModifier); // Move the character direction = forward * speed * speedModifier; GetComponent (CharacterController).SimpleMove(direction); SendMessage("SetSpeed", speed * speedModifier, SendMessageOptions.DontRequireReceiver); } function PickNextWaypoint (currentWaypoint : AutoWayPoint) { // We want to find the waypoint where the character has to turn the least // The direction in which we are walking var forward = transform.TransformDirection(Vector3.forward); // The closer two vectors, the larger the dot product will be. var best = currentWaypoint; var bestDot = -10.0; for (var cur : AutoWayPoint in currentWaypoint.connected) { var direction = Vector3.Normalize(cur.transform.position - transform.position); var dot = Vector3.Dot(direction, forward); if (dot > bestDot && cur != currentWaypoint) { bestDot = dot; best = cur; } } return best; }
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