/// <summary>
/// update player's non-live (time traveling) paths
/// </summary>
public void updatePast(long curTime)
{
if (hasNonLivePaths) {
foreach (Path path in g.paths) {
if (this == path.player) path.updatePast(curTime, true);
}
if (curTime >= g.timeSim && g.timeSim >= timeGoLiveFailedAttempt + g.updateInterval) {
// make player's time traveling paths go live
long timeTravelStart = long.MaxValue;
// find earliest time that player's paths started time traveling
foreach (Path path in g.paths) {
if (this == path.player && path.timeSimPast != long.MaxValue && path.segments[0].timeStart < timeTravelStart) {
timeTravelStart = path.segments[0].timeStart;
}
}
if (timeTravelStart != long.MaxValue) { // skip if player has no time traveling paths
// check if going live would lead to player ever having negative resources or going over population limit
timeGoLiveProblem = checkNegRsc(timeTravelStart, true);
if (timeGoLiveProblem < 0 && populationLimit >= 0) {
timeGoLiveProblem = checkPopulation(timeTravelStart);
}
if (timeGoLiveProblem >= 0) {
// indicate failure to go live, then return
timeGoLiveFailedAttempt = g.timeSim;
return;
}
// safe for paths to become live, so do so
foreach (Path path in g.paths) {
if (this == path.player && path.timeSimPast != long.MaxValue) {
List<SegmentUnit> queue = new List<SegmentUnit>();
SegmentUnit nonLiveChild = new SegmentUnit();
path.timeSimPast = long.MaxValue;
foreach (Segment segment in path.segments) {
queue.AddRange (segment.segmentUnits ());
}
while (queue.Count > 0) {
foreach (SegmentUnit prev in queue[0].prev ()) {
if (prev.segment.path.timeSimPast != long.MaxValue) {
prev.segment.path.timeSimPast = long.MaxValue;
queue.Add (prev);
}
}
foreach (SegmentUnit parent in queue[0].parents ()) {
if (parent.segment.path.timeSimPast != long.MaxValue) {
parent.segment.path.timeSimPast = long.MaxValue;
queue.Add (parent);
}
}
if (nonLiveChild.g == null && queue[0].children().Any ()) nonLiveChild = queue[0];
queue.RemoveAt (0);
}
if (nonLiveChild.g != null) g.deleteOtherPaths (new SegmentUnit[] { nonLiveChild }, true, false);
}
}
}
// indicate success
hasNonLivePaths = false;
timeGoLiveFailedAttempt = long.MinValue;
// try again to stack paths that failed to stack in the past
foreach (var item in goLiveStackPaths) {
g.addStackEvts (item.Value.ToList (), item.Key);
}
goLiveStackPaths = new Dictionary<int, HashSet<Path>>();
}
}
}
private void addAncestors(SegmentUnit segmentUnit, HashSet<SegmentUnit> ancestors, HashSet<SegmentUnit> prev, HashSet<SegmentUnit> liveToNonLivePrev)
{
ancestors.Add (segmentUnit);
foreach (SegmentUnit prevSegment in segmentUnit.prev ()) {
if (segmentUnit.segment.path.timeSimPast != long.MaxValue && prevSegment.segment.path.timeSimPast == long.MaxValue) {
liveToNonLivePrev.Add(prevSegment);
} else {
prev.Add (prevSegment);
}
addAncestors (prevSegment, ancestors, prev, liveToNonLivePrev);
}
foreach (SegmentUnit parent in segmentUnit.parents ()) {
addAncestors (parent, ancestors, prev, liveToNonLivePrev);
}
}
private bool canMakePath(long time, List<Unit> units, out bool costsRsc, bool ignoreSeen = false)
{
costsRsc = false;
if (units.Count == 0) return false;
Segment segment = segmentWhen(time);
if (segment == null) return false;
int newUnitCount = 0;
long[] rscCost = new long[g.rscNames.Length];
foreach (Unit unit in units) {
if (segment.units.Contains (unit)) {
// unit in path already exists
SegmentUnit segmentUnit = new SegmentUnit(segment, unit); // get parent SegmentUnit
if (!segmentUnit.canBeUnambiguousParent (time)) return false;
if (!ignoreSeen && !segmentUnit.unseenAfter (time)) return false;
if (!segmentUnit.hasChildrenAfter ()) return false;
} else if (!(time == segment.timeStart && new SegmentUnit(segment, unit).prev ().Any ())) {
// unit in path would be new unit
if (!canMakeUnitType (time, unit.type)) return false;
if (unit.type.speed > 0) newUnitCount++;
for (int i = 0; i < g.rscNames.Length; i++) {
rscCost[i] += unit.type.rscCost[i];
}
}
}
bool newPathIsLive = (time >= g.timeSim && timeSimPast == long.MaxValue);
if (!newPathIsLive && !Sim.enableNonLivePaths) return false;
if (player.populationLimit >= 0 && player.population (time) + newUnitCount > player.populationLimit) return false;
for (int i = 0; i < g.rscNames.Length; i++) {
if (rscCost[i] > 0 && player.resource(time, i, !newPathIsLive) < rscCost[i]) return false;
}
costsRsc = rscCost.Where (r => r > 0).Any ();
return true;
}
