// Adjust position state based on current behaviour
private EntityPositionState EvaluateBehaviour()
{
creep = false;
switch (BehaviouralState)
{
case BehaviourState.Wander:
{
return(EntityPositionState.SteeringWander);
}
case BehaviourState.SlowFlee:
{
creep = true;
return(EntityPositionState.SteeringFlee);
}
case BehaviourState.RangedPursue:
{
if ((Position - Target.Position).Length() < MAX_PROJECTILE_DISTANCE)
{
return(EntityPositionState.RangedAttack);
}
GroundTarget = Target.Position;
return(EntityPositionState.SteeringArrive);
}
case BehaviourState.RangedCreep:
{
if ((Position - Target.Position).Length() < MAX_PROJECTILE_DISTANCE)
{
return(EntityPositionState.RangedAttack);
}
creep = true;
GroundTarget = Target.Position;
return(EntityPositionState.SteeringArrive);
}
case BehaviourState.MeleePursue:
{
// if zombie has reserved a slot, check if close enough to attack, or far enough to release
if (targetslot >= 0)
{
// check if close enough to slot to start attacking
if ((Position - SlotTarget).Length() < ArriveRadius)
{
return(EntityPositionState.Attack);
}
// check if far enough to release slot
if ((Position - Target.Position).Length() > 2 * MAX_PROJECTILE_DISTANCE)
{
Target.releaseSlot(this, targetslot);
targetslot = -1;
}
GroundTarget = SlotTarget;
return(EntityPositionState.SteeringArrive);
}
// zombie has no slot, try to attack or reserve a slot
if ((Position - Target.Position).Length() < MAX_MELEE_DISTANCE)
{
return(EntityPositionState.Attack);
}
// check if close enough to reserve a slot and set slot as target
if ((Position - Target.Position).Length() < MAX_PROJECTILE_DISTANCE)
{
targetslot = Target.reserveSlot(this);
GroundTarget = Target.Position;
return(EntityPositionState.SteeringArrive);
}
GroundTarget = Target.Position;
return(EntityPositionState.SteeringArrive);
}
case BehaviourState.MeleeCreep:
{
// if zombie has reserved a slot, check if close enough to attack, or far enough to release
if (targetslot >= 0)
{
// check if close enough to slot to start attacking
if ((Position - SlotTarget).Length() < ArriveRadius)
{
return(EntityPositionState.Attack);
}
// check if far enough to release slot
if ((Position - Target.Position).Length() > 2 * MAX_PROJECTILE_DISTANCE)
{
Target.releaseSlot(this, targetslot);
targetslot = -1;
}
GroundTarget = SlotTarget;
creep = true;
return(EntityPositionState.SteeringArrive);
}
// zombie has no slot, try to attack or reserve a slot
if ((Position - Target.Position).Length() < MAX_MELEE_DISTANCE)
{
return(EntityPositionState.Attack);
}
// check if close enough to reserve a slot and set slot as target
if ((Position - Target.Position).Length() < MAX_PROJECTILE_DISTANCE)
{
targetslot = Target.reserveSlot(this);
GroundTarget = Target.Position;
return(EntityPositionState.SteeringArrive);
}
creep = true;
GroundTarget = Target.Position;
return(EntityPositionState.SteeringArrive);
}
case BehaviourState.Flee:
{
return(EntityPositionState.SteeringFlee);
}
default:
{
return(EntityPositionState.None);
}
}
}
