void Start()
{
Health unitHealth = GetComponent <Health> ();
unitHealth.OnDeath += OnUnitDeath;
shootingTarget = transform.Find("Shooting Target");
if (shootingTarget == null)
{
Debug.LogError(gameObject.name + " :: Start - Shooting Target not found.");
}
// Subscribe to onFinish event.
walkToTarget = GetComponent <WalkToTarget>();
if (walkToTarget != null)
{
walkToTarget.onFinish += OnFinish;
}
animator = GetComponent <Animator> ();
Random.InitState((int)System.DateTime.Now.Ticks);
hasTorch = Random.value >= 0.5;
hasFork = Random.value >= 0.7;
CreateItems(unitHealth);
}
void OnUnitSpawn(GameObject spawnedUnitGO)
{
Health spawnedUnitHealth = spawnedUnitGO.GetComponent <Health> ();
WalkToTarget walkToTarget = spawnedUnitGO.GetComponent <WalkToTarget> ();
// Every unit must have Health script attached
if (spawnedUnitHealth != null && walkToTarget != null)
{
unitsList.Add(spawnedUnitGO);
spawnedUnitHealth.OnDeath += RemoveUnitFromList;
walkToTarget.onFinish += RemoveUnitFromList;
}
else if (spawnedUnitHealth == null)
{
Debug.LogError("Spawned unit " + spawnedUnitGO.name + " does not have Heath script attached!");
}
else if (walkToTarget == null)
{
Debug.LogError("Spawned unit " + spawnedUnitGO.name + " does not have WalkToTarget script attached!");
}
}
private IBehaviour CreateBunnyAI()
{
Selector mainSelector = new Selector("Main Selector")
.Add(
idleDesire
);
//mainSelector.children.AddRange(new IBehaviour[] { idleDesire, eatFoodDesire, avoidDangerDesire, attackHatedDecider });
// Idle subtree.
Selector idleSelector = new Selector("Idle Selector");
// Idle -> Wander tree
TreeInternalNode wanderSequencer = new Sequencer("Wander Behaviour");
IBehaviour findWanderTarget = new WanderBehaviour("Find Wander Target");
IBehaviour moveToPosition = new WalkToBehaviour("Walk to target");
wanderSequencer.children.Add(findWanderTarget);
wanderSequencer.children.Add(moveToPosition);
Repeater wanderRepeater = new Repeater();
wanderRepeater.child = wanderSequencer;
AnonUtilityWrapper wanderDesire = new AnonUtilityWrapper();
wanderDesire.child = wanderSequencer;
wanderDesire.utilityFunction = (x) => { return(0.5f); };
// Idle -> Breed Tree.
IBehaviour findMateBehaviour = new PickSameSpecies("Find a mate");
IBehaviour walkToMateBehaviour = new WalkToTarget("Walk to the mate");
IBehaviour breedBehaviour = new Breed("");
Sequencer breedSequencer = new Sequencer("Breeding");
breedSequencer.children.AddRange(new IBehaviour[] { findMateBehaviour, walkToMateBehaviour, breedBehaviour });
AnonUtilityWrapper breedDesire = new AnonUtilityWrapper();
breedDesire.child = breedSequencer;
breedDesire.utilityFunction = (x) =>
{
return(x.target.BreedDesire());
};
idleSelector.children.AddRange(new IBehaviour[] { wanderDesire, breedDesire });
AnonUtilityWrapper idleDesire = new AnonUtilityWrapper();
idleDesire.child = idleSelector;
idleDesire.utilityFunction = (x) => { return(0.5f); };
// Find and eat food subtree.
TreeInternalNode findFoodSubtree = new Sequencer("Find Food Subtree");
IBehaviour findFood = new FindFood("Find Food");
IBehaviour walkToFood = new WalkToTarget("Walk To Food");
IBehaviour eat = new Eat("Eat Food");
findFoodSubtree.children.AddRange(new IBehaviour[] { findFood, walkToFood, eat });
AnonUtilityWrapper eatFoodDesire = new AnonUtilityWrapper("Desire for food.");
eatFoodDesire.child = findFoodSubtree;
eatFoodDesire.utilityFunction = (x) =>
{
if (x == null || x.target == null)
{
return(0f);
}
if (x.target.eating)
{
return(1f);
}
else
{
return((x.target.hunger - 15f) / 15f);
}
};
// Flee Danger Subtree
Repeater avoidTreeRepeater = new Repeater();
Sequencer avoidDangerTree = new Sequencer("Running Away Subtree");
avoidTreeRepeater.child = avoidDangerTree;
IBehaviour avoidDanger = new AvoidDanger("Work out where to run");
IBehaviour walkAway = new WalkToBehaviour("Do the running away");
avoidDangerTree.children.AddRange(new IBehaviour[] { avoidDanger, walkAway });
AnonUtilityWrapper avoidDangerDesire = new AnonUtilityWrapper("Current danger estimate");
avoidDangerDesire.SetChild(avoidTreeRepeater);
avoidDangerDesire.utilityFunction = (x) =>
{
if (x.target.predator)
{
return(0f);
}
if (x.target.hunter == null)
{
return(0f);
}
else
{
float distance = (x.target.hunter.transform.position - x.target.transform.position).magnitude;
if (distance < 8f)
{
return((8f - distance) / 3f);
}
else
{
return(0f);
}
}
};
// Attack Hated behaviours.
FindHatedTarget findTarget = new FindHatedTarget("");
WalkToTarget moveToTarget = new WalkToTarget("Approach victim");
Attack attackTarget = new Attack();
Sequencer attackHatedSequencer = new Sequencer("Attack Hated Creatures");
attackHatedSequencer.children.AddRange(new IBehaviour[] { findTarget, moveToTarget, attackTarget });
AnonUtilityWrapper attackHatedDecider = new AnonUtilityWrapper("Impact of nearby hated units");
attackHatedDecider.SetChild(attackHatedSequencer);
attackHatedDecider.utilityFunction = (x) => { return(findTarget.GetUtility()); };
mainSelector.children.AddRange(new IBehaviour[] { idleDesire, eatFoodDesire, avoidDangerDesire, attackHatedDecider });
Repeater repeatAll = new Repeater();
repeatAll.SetChild(mainSelector);
return(repeatAll);
}
