public void updateChild()
{
if (child == null)
{
return;
}
//rotate to face parent
Vector2 point = (Vector2)transform.position;
Quaternion rot = Quaternion.LookRotation(child.transform.position - new Vector3(point.x, point.y, -100f), Vector3.forward);
child.transform.rotation = rot;
child.transform.eulerAngles = new Vector3(0f, 0f, transform.eulerAngles.z);
//lock distance within trail distance
Vector2 dPos = child.transform.position - transform.position;
if (dPos.magnitude > trailDistance)
{
child.transform.position = transform.position + (Vector3)(dPos.normalized * trailDistance);
}
//go down the chain
WormSegment segment = child.GetComponent <WormSegment> ();
if (segment != null)
{
segment.updateChild();
}
}
private void GrowLength()
{
WormSegment current = this.GetComponent <WormHead> ().Behind;
while (current.Behind != null)
{
current = current.Behind;
}
current.ExtendWorm(1, 2);
}
private void GrowWidth()
{
if (this.gameObject.transform.localScale.magnitude < new Vector3(rateOfGrowth, rateOfGrowth, rateOfGrowth).magnitude)
{
this.gameObject.transform.localScale *= widthGrowth;
WormSegment current = this.GetComponent <WormHead> ().Behind;
while (current.Behind != null)
{
current.Behind.gameObject.transform.localScale *= widthGrowth;
current = current.Behind;
}
}
}
public void ExtendWorm(int currentSize, int maxSize)
{
if (currentSize >= maxSize)
{
this.transform.localScale /= 2; // tail will look half the size
return;
}
WormSegment newSegment = Instantiate(wormSegmentPrefab, transform.parent);
newSegment.name = "worm-segment-" + currentSize;
newSegment.SetSegmentAhead(this);
segmentBehind = newSegment;
if (!segmentAhead)
{
newSegment.transform.localPosition = 2 * wormSpread * (transform.position - Vector3.up).normalized;
}
else
{
newSegment.transform.localPosition = wormSpread * (transform.position - segmentAhead.transform.position).normalized;
newSegment.transform.localScale = -segmentAhead.transform.localScale; // each segment is a flip of the previous
}
newSegment.ExtendWorm(currentSize + 1, maxSize);
}
public void Die()
{
Behind = null;
onDeath.Invoke();
Destroy(this.gameObject, 5f);
}
public void SetSegmentAhead(WormSegment segment)
{
segmentAhead = segment;
}
