protected static int ComparePriorities(TaskNode a, TaskNode b)
{
//return what a is compared to b (-1 is less than, 0 equal, 1 greater)
double priorityA = a.CalcPriority();
double priorityB = b.CalcPriority();
if (priorityA > priorityB)
{
return(1);
}
if (priorityA < priorityB)
{
return(-1);
}
return(0);
}
public override void Execute()
{
//sort children by priority
children.Sort(ComparePriorities);
bool onConcurrent = true;
//assume the highest priority event is concurrent, now execute each child in descending priority order
//until we've executed a non-concurrent one
for (int i = children.Count - 1; onConcurrent == true && i >= 0; i--)
{
TaskNode current = children[i];
onConcurrent = current.Concurrent;
current.Execute();
}
}
//parses a Subtask's block of children and adds the children under Subtask
private bool ParseLevel(Subtask parent, StreamReader sr)
{
if (DebugPrinting)
{
form1.WriteAI("DEBUG: Searching for child tasks in \"" + parent.ToString() + "\"");
}
char[] buffer = new char[1];
String temp;
bool concurrent = false;
//pass through every char until we reach something of interest (namely a child or >)
while (sr.Peek() != -1 && (char)sr.Peek() != '}')
{
sr.Read(buffer, 0, 1);
temp = new String(buffer);
//decide what to do about the char read in
switch (buffer[0])
{
case '#':
String comment = sr.ReadLine();
if (DebugPrinting)
{
form1.WriteAI("DEBUG: Skipping comment \"#" + comment + "\"");
}
if (comment.StartsWith("!"))
{
int t;
if (Int32.TryParse(comment.Substring(1), out t))
{
form1.setAIInterval(t);
}
form1.WriteAI("DEBUG: Setting AI Interval to " + t);
}
break;
case '[':
//makenode will move sr ahead to the next header in this block
if (DebugPrinting)
{
form1.WriteAI("DEBUG: Encountered a child task in \"" + parent.ToString() + "\"");
}
TaskNode child = MakeNode(sr, concurrent);
if (child == null)
{
form1.WriteAI("ERROR: Failed to create child task in \"" + parent.ToString() + "\"");
return(false);
}
parent.children.Add(child);
concurrent = false;
break;
case '*':
concurrent = true;
break;
case '>':
String path = form1.launchPath + "\\ai\\" + sr.ReadLine();
if (DebugPrinting)
{
form1.WriteAI("DEBUG: Including external file \"" + path + "\"");
}
FileStream fs;
try
{
fs = File.Open(path, FileMode.Open);
}
catch (IOException)
{
form1.WriteAI("ERROR: Could not find included file \"" + path + "\"");
return(false);
}
StreamReader tempStream = new StreamReader(fs);
if (!ParseLevel(parent, tempStream))
{
return(false);
}
break;
default:
if (DebugPrinting)
{
form1.WriteAI("DEBUG: Skipping character \"" + temp + "\"");
form1.WriteAI("(" + ((int)(temp.ToCharArray()[0])).ToString() + ")");
}
break;
}
} //for each char between things of interest
//at the block ending char '}'
return(true);
}