private void ProcessStack(Stack <Crate> stack, List <Crate> checkList, List <Crate> updateList, Group newGroup)
{
// INGRESS
// get crate from stack - get nbrs - add nbrs to stack and list
while (stack.Count > 0)
{
Crate nextCrate = stack.Peek(); // get crate from stack - PEEK ONLY
Crate[] nbrs = nextCrate.Neighbours(); // get nbrs
foreach (Crate nbr in nbrs) // get deeper if there are unchecked nbrs
{
if (nbr != null && !checkList.Contains(nbr))
{
stack.Push(nbr);
checkList.Add(nbr);
ProcessStack(stack, checkList, updateList, newGroup);
}
}
// EGRESS
// pull a crate from the stack - reassign group
if (stack.Count > 0)
{
Crate crateToUpdate = stack.Pop();
if (!updateList.Contains(crateToUpdate)) // was the crate already updated?
{
GetGroupByCrate(crateToUpdate).RemoveCrate(crateToUpdate); // remove crate from old group
master.orderMaster.RemoveGroupMatches(GetGroupByCrate(crateToUpdate));
newGroup.AddCrate(crateToUpdate); // add crate to new group
crateToUpdate.SetGroup(newGroup.Index); // update group index in crate
updateList.Add(crateToUpdate); // mark crate as updated
}
}
}
}
public void AssignCrateToNewGroup(Crate crate) // handle group management when a new crate is added
{
// get crate nbrs
Crate[] crateNbrs = crate.Neighbours();
// check number of nbrs
int nbrsCount = 0;
for (int count = 0; count < 4; count++)
{
if (crateNbrs[count] != null)
{
nbrsCount++;
}
}
// CASES
Group newGroup = null;
switch (nbrsCount)
{
case 0: // no nbrs
NewGroupNumber();
crate.SetGroup(lastCreatedGroup);
newGroup = new Group(crate, lastCreatedGroup);
groupList.Add(newGroup);
int newColor = 0;
if (!master.crateMaster.startingColorUsed)
{
newColor = master.crateMaster.randomStartingColorIndex;
master.crateMaster.startingColorUsed = true;
}
else
{
newColor = master.crateMaster.GetNewColor();
}
groupToColorMap.Add(newGroup, newColor);
break;
case 1: // 1 nbr
// find nbr and assign its group to crate
for (int count = 0; count < 4; count++)
{
if (crateNbrs[count] != null)
{
// set new group to crate
crate.SetGroup(crateNbrs[count].Group);
// find group OBJ and add crate to it
newGroup = GetGroupByIndex(crateNbrs[count].Group);
newGroup.AddCrate(crate);
break;
}
}
break;
default: // more than 1 nbr
// if all nbrs are of the same group
if (NbrCount(crateNbrs) == 1)
{
for (int count = 0; count < 4; count++)
{
if (crateNbrs[count] != null)
{
// set up the group for the crate
crate.SetGroup(crateNbrs[count].Group);
// find group OBJ and add crate to it
newGroup = GetGroupByIndex(crateNbrs[count].Group);
newGroup.AddCrate(crate);
break;
}
}
break;
}
else // more than 1 group in the nbrs - find the largest one and assign all relevant crates to it
{
// if there are 2 or more nbrs and they are of more than 1 group
// find the largest adjacent group
int largestGroupIndex = 0;
int largestGroupSize = 0;
List <int> obsoleteGroups = new List <int>();;
for (int count = 0; count < 4; count++)
{
if ((crateNbrs[count] != null)) // if this is a nbr
{
obsoleteGroups.Add(crateNbrs[count].Group); // add nbr.Group to obsolete groups
Group group = GetGroupByCrate(crateNbrs[count]); // find the group of that nbr
if (group.CrateList.Count > largestGroupSize) // if this group is largest so far, note that in the 'largest...' variables
{
largestGroupSize = group.CrateList.Count;
largestGroupIndex = group.Index;
}
}
}
// set up the largest group for the crate
crate.SetGroup(largestGroupIndex);
// find group OBJ and add the crate to it
newGroup = GetGroupByIndex(largestGroupIndex);
newGroup.AddCrate(crate);
// remove obsolete groups
obsoleteGroups.Remove(largestGroupIndex); // make sure the largest group is NOT obsolete
Group largestGroup = newGroup;
foreach (Crate checkCrate in master.crateMaster.crateList) // the new crate is not in the crateList YET!
{
if (obsoleteGroups.Contains(checkCrate.Group)) // if a group is in the obolete list..
{
// remove the crate from the current group
GetGroupByCrate(checkCrate).RemoveCrate(checkCrate);
master.orderMaster.RemoveGroupMatches(GetGroupByCrate(checkCrate));
// .. assign the crate the new group,
checkCrate.SetGroup(largestGroupIndex);
// .. then add it to the group
largestGroup.AddCrate(checkCrate);
}
}
foreach (int obsoleteGroupIndex in obsoleteGroups) // remove each group with an obsolete index (crates already assigned to the largest group)
{
Group obsoleteGroup = GetGroupByIndex(obsoleteGroupIndex);
RemoveGroup(obsoleteGroup);
// groupToColorMap.Remove(obsoleteGroup);
// groupList.Remove(obsoleteGroup);
}
}
break;
}
}