public void EnableMultithreading () {
#if !UNITY_WEBGL
if (graphUpdateThread == null || !graphUpdateThread.IsAlive) {
graphUpdateThread = new Thread (ProcessGraphUpdatesAsync);
graphUpdateThread.IsBackground = true;
// Set the thread priority for graph updates
// Unless compiling for windows store or windows phone which does not support it
#if !UNITY_WINRT
graphUpdateThread.Priority = System.Threading.ThreadPriority.Lowest;
#endif
graphUpdateThread.Start (this);
}
#endif
}
public PathProcessor (AstarPath astar, PathReturnQueue returnQueue, int processors, bool multithreaded) {
this.astar = astar;
this.returnQueue = returnQueue;
if (processors < 0) {
throw new System.ArgumentOutOfRangeException("processors");
}
if (!multithreaded && processors != 1) {
throw new System.Exception("Only a single non-multithreaded processor is allowed");
}
// Set up path queue with the specified number of receivers
queue = new ThreadControlQueue(processors);
threadInfos = new PathThreadInfo[processors];
for (int i = 0; i < processors; i++) {
threadInfos[i] = new PathThreadInfo(i, astar, new PathHandler(i, processors));
}
if (multithreaded) {
threads = new Thread[processors];
// Start lots of threads
for (int i = 0; i < processors; i++) {
var threadIndex = i;
var thread = new Thread (() => CalculatePathsThreaded(threadInfos[threadIndex]));
thread.Name = "Pathfinding Thread " + i;
thread.IsBackground = true;
threads[i] = thread;
thread.Start();
}
} else {
// Start coroutine if not using multithreading
threadCoroutine = CalculatePaths(threadInfos[0]);
}
}