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Zombie Alien Mellee Attack
OK I think I'm finally starting to make some head way with this. I've basically pulled out what I believe are all of the stuff related to weapons fire in the Robot AI script from the FPS tutorial in an attempt to get it to work for my Alien Zombies, which do not have weapons. So what I've got now is 4 animations for my Alien Zombie as follow:
1 - Take01 just his T-pose and not used 2 - idle 3 - Walk 4 - RunAttack (Which is supposed to occure when my FPS player is within attack range) 5 - Attack (which is baically a biting and clawing attack which should happen when he reaches or collides with my FPS player)
Now what I can't figure out is how to implement these animation into my script. Right now it's kinda cute, he follows me around when within range otherwise he wanders off back to his way points and idles lol
Here is my script so far, I would sure apreciate any help some of you more experience at code than I could help me out with or point me in the right direction. Much thanks:
var speed = 3.0; var rotationSpeed = 5.0; var attackRange = 30.0; var dontComeCloserRange = 5.0; 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 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 > attackRange * 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);
}
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;
}
Answer by Owen-Reynolds · Mar 21, 2011 at 06:29 AM
You're pretty much done. You'll have to select Split for your imported model (in Project, not the GameObject) and manually set each animation frames/name.
[edit] After slicing the animation into named clips, go to the actual zombie gameObject, and make sure its animation list has them all (should see a list of just the clip names.)
[edit] A cheap test is to set each one in turn as the animation (with PlayAutomatically checked) and run the game.
The Animation scripting reference (and the introduction linked from there) pretty much spells the rest out.
Two comments: you can safely run "Play" on an animation every frame. If it was already started, it won't rewind (in other words, you don't have to think of a way to play attack only if you just started attacking.)
I'd leave looping walk/idle on layer 0, and put runAttack and attack as PlayOnce on layer 1 (so you don''t need to start walk when attack ends -- it will automatically go back to walk.)
The docs are thorough, explaining layers, code samples... .
[edit] For code, try (in attack):
if (distance > dontComeCloserRange)
MoveTowards (lastVisiblePlayerPosition);
else {
animate.CrossFade("attack"); // -- the new line
RotateTowards(lastVisiblePlayerPosition);
}
Thanks owenpat. I should mention to that I was not sure if my calls to animation should be inside of this script or if they should be in my other script because I did try putting one if statement in here that called an animation to occure and it said something about not finding any animations even though they ARE added corectly. Also because of the way $$anonymous$$AX 8 FBX exported my models, they were rotated incorrectly so the had to be placed inside of an empty game object so my animation call are modelAnimations.CrossFade etcetera. so I'm guesing I might need a workaround? Right now they follow me
I also should mention that "Attack" is like a clawing and biting kind of animation so I was thinking that one should continue to play some how if the Alien Zombie is right in contact with my player and stop if my player gets out of range, and then he would need run after him again in order to get close enough to do his attack animation. I'm also struggling to figure out how to make that "Attack" actually do dameage and remove hit points from my FPS player??
Edited my reply for 1st comment. On the export from $$anonymous$$ax, look for a "flipYZ" button. Or, just grab all the verts and do a 90deg spin so that Y is up and Z is forwards. A common modelling trick (so they tell me.) Once you have animation running, you'll have a better feel for what looks good. For damage, use a timer and hurt the player if you are close enough. Bullet hits and claw hits are otherwise about the same.
$$anonymous$$y Version of $$anonymous$$AX 8 does not have that in the FBS export option, that was why we had to place our alien Zombies inside of an empty game object which was rotated the correct way and access the animation inside of that game object via "modelAnimations.CrossFade...." So I'll test out what you wrote in your edit but I don't think it will work based on how my Zombie aliens are set up.
Nope it didn't, Important to keep in $$anonymous$$d that my Alien Zombies are inside of an empty game object so references to the animation has to look inside of that game object... heck it confuses me too but because of the Stooopid way that $$anonymous$$ax 8 Export models using that version of FBX exporter that was how they needed to be placed otherwise I ended up with "Swim$$anonymous$$g Zombies." And No there is no updated version of FBX exporter they only supported back to $$anonymous$$AX 9, software companies really know how to stick it in and break it off don't they? :(