private void respawn()
{
if (Random.value < p)
{
int index = Random.Range(0, n - 1);
zombies[index].active = false;
Corners.CornerIndex ci = cn.randomCorner();
zombies[index].transform.localEulerAngles = new Vector3(0, 90 * ((ci.j - 2) % 4), 0);
zombies[index].initialize(randomType(), ci, cn.getCorner(ci.i, (4 + ci.j - 1) % 4));
}
}
// initialize the type and states of the zombie
public void initialize(ZombieBehavior.ZombieType t, Corners.CornerIndex ci, Vector2 pos)
{
transform.Find("character").renderer.material = zb.getColor(t);
direction = 1;
active = true;
moving = true;
type = t;
speed = zb.getSpeed(t);
nextCorner = new Corners.CornerIndex(ci.i, ci.j);
position = pos;
nextPos = Vector2.zero;
distanceLeft = cn.distanceLeft(nextCorner, position, direction == 1);
unitVelocity = cn.getCorner(ci) - position;
unitVelocity.Normalize();
transform.localPosition = new Vector3(pos.x, 0, pos.y);
}
void Start()
{
// compute the probability density for a uniform initialization of the zombie position
// at the start of the game
zombies = new Zombie[n];
float sum = 0;
Vector2[,] diff = new Vector2[3, 3];
for (int i = 0; i < 3; i++)
{
for (int j = 1; j < 4; j++)
{
diff[i, j - 1] = cn.getCorner(i, j - 1) - cn.getCorner(i, j);
sum += Vector2.SqrMagnitude(diff[i, j - 1]);
}
}
Dictionary <float, Corners.CornerIndex> cdf = new Dictionary <float, Corners.CornerIndex> ();
float cumu = 0;
for (int i = 0; i < 3; i++)
{
for (int j = 1; j < 4; j++)
{
cumu += Vector2.SqrMagnitude(diff[i, j - 1]) / sum;
cdf.Add(cumu, new Corners.CornerIndex(i, j));
}
}
for (int i = 0; i < n; i++)
{
float rnd = Random.value;
foreach (float f in cdf.Keys)
{
if (rnd < f)
{
// create a zombie here
zombies[i] = (Zombie)Instantiate(zombie);
zombies[i].name = i.ToString();
Corners.CornerIndex idx = cdf[f];
zombies[i].transform.parent = transform;
zombies[i].transform.localEulerAngles = new Vector3(0, 90 * ((idx.j - 2) % 4), 0);
zombies[i].initialize(randomType(), idx, diff[idx.i, idx.j - 1] * Random.value + cn.getCorner(idx));
break;
}
}
}
}
