public void DoUpdate(float deltaTime)
{
timer += deltaTime;
if (timer < updateInterval)
{
return;
}
if (owner == null)
{
return;
}
timer = 0;
Vector2Int dir = Vector2Int.zero;
var isReachTheEnd = CollisionHelper.HasColliderWithBorder(owner.dir, owner.GetHeadPos());
if (isReachTheEnd)
{
List <int> allWalkableDir = new List <int>();
for (int i = 0; i < (int)(EDir.EnumCount); i++)
{
var vec = (Vector2)CollisionHelper.GetDirVec((EDir)i) * Walker.TANK_HALF_LEN;
var pos = owner.pos + vec;
if (!CollisionHelper.HasCollider(pos))
{
allWalkableDir.Add(i);
}
}
var count = allWalkableDir.Count;
if (count > 0)
{
owner.dir = (EDir)(allWalkableDir[Random.Range(0, count)]);
}
return;
}
var iPos = owner.pos.Floor();
if ((owner.pos - (iPos + Global.UnitSizeVec)).sqrMagnitude < sqrtTargetDist)
{
if (Random.value > turnRate)
{
return;
}
//random change dir if it can
var borderDir = CollisionHelper.GetDirVec((EDir)((int)(owner.dir + 1) % (int)EDir.EnumCount));
var iBorder1 = iPos + borderDir;
var iBorder2 = iPos - borderDir;
if (!CollisionHelper.HasCollider(iBorder1))
{
owner.dir = CollisionHelper.GetEDirFromVec(borderDir);
}
else if (!CollisionHelper.HasCollider(iBorder2))
{
owner.dir = CollisionHelper.GetEDirFromVec(Vector2Int.zero - borderDir);
}
}
}
