public InclineMeshData BuildMeshData(MapMetaData mapMetaData)
{
DateTime startTime = System.DateTime.Now;
Debug.Log("started making incline mesh at " + startTime);
int numInclineNodesX = Mathf.CeilToInt(mapMetaData.mapTerrainDataCells.GetLength(0) / (float)downsampleFactor);
int numInclineNodesZ = Mathf.CeilToInt(mapMetaData.mapTerrainDataCells.GetLength(1) / (float)downsampleFactor);
InclineMeshData meshData = new InclineMeshData(numInclineNodesX, numInclineNodesZ);
meshData.downsampleFactor = downsampleFactor;
meshData.mapMetaData = mapMetaData;
for (int x = 0; x < numInclineNodesX; ++x)
{
for (int z = 0; z < numInclineNodesZ; ++z)
{
InclineIndexPoint inclinePoint = new InclineIndexPoint(x, z);
processNode(meshData, mapMetaData, inclinePoint);
}
}
DateTime endTime = System.DateTime.Now;
TimeSpan elapsed = endTime - startTime;
Debug.Log("finished making incline mesh at " + endTime);
Debug.Log("Elapsed Time: " + elapsed);
return(meshData);
}
float getDistanceBetweenTwoInclinePoints(InclineMeshData meshData, MapMetaData mapMetaData)
{
InclineIndexPoint inclinePoint1 = new InclineIndexPoint(1, 1);
InclineIndexPoint inclinePoint2 = new InclineIndexPoint(1, 2);
Point mapPoint1 = meshData.InclineIndicesToMapIndices(inclinePoint1);
Point mapPoint2 = meshData.InclineIndicesToMapIndices(inclinePoint2);
Vector3 worldVec1 = mapMetaData.getWorldPos(mapPoint1);
Vector3 worldVec2 = mapMetaData.getWorldPos(mapPoint2);
return((worldVec2 - worldVec1).magnitude);
}
public InclineMeshHelper(InclineMeshData meshData)
{
this.meshData = meshData;
}
void processNode(InclineMeshData meshData, MapMetaData mapMetaData, InclineIndexPoint inclinePoint)
{
Point startPointMapIndices = meshData.InclineIndicesToMapIndices(inclinePoint);
if (!mapMetaData.IsWithinBounds(startPointMapIndices))
{
return;
}
Dictionary <Point, List <InclineLinkData> > bestPaths = new Dictionary <Point, List <InclineLinkData> >();
List <InclineLinkData> starterList = new List <InclineLinkData>();
starterList.Add(new InclineLinkData());
bestPaths[startPointMapIndices] = starterList;
List <Point> openPoints = new List <Point>();
openPoints.Add(startPointMapIndices);
float maximumPathDistance = overshootMultiplier * getDistanceBetweenTwoInclinePoints(meshData, mapMetaData);
while (openPoints.Count > 0)
{
Point p = openPoints[0];
openPoints.RemoveAt(0);
//Debug.LogFormat("dequeueing {0} {1}", p.X, p.Z);
for (int d = 0; d < 4; ++d)
{
int dx = 0;
int dz = 0;
switch (d)
{
case 0: dx = 1; dz = 0; break;
case 1: dx = 0; dz = 1; break;
case 2: dx = -1; dz = 0; break;
case 3: dx = 0; dz = -1; break;
default: Debug.LogError("invalid direction: " + d); continue;
}
Point newPoint = new Point(p.X + dx, p.Z + dz);
if ((!mapMetaData.IsWithinBounds(newPoint)) ||
(!mapMetaData.IsWithinBounds(p)))
{
continue;
}
float incline, decline, distance;
getIncrementalInclines(mapMetaData, p, newPoint, out incline, out decline, out distance);
bool pointIsDirty = false;
for (int pathIndex = 0; pathIndex < bestPaths[p].Count; pathIndex++)
{
InclineLinkData pathSoFar = bestPaths[p][pathIndex];
float oldFloatIncline = pathSoFar.inclineAsFloat();
float oldFloatDecline = pathSoFar.declineAsFloat();
float oldFloatDistance = pathSoFar.distanceAsFloat();
float newFloatIncline = Mathf.Max(incline, oldFloatIncline);
float newFloatDecline = Mathf.Max(decline, oldFloatDecline);
float newFloatDistance = oldFloatDistance + distance;
// if the distance is too far, also stop recursing.
if (newFloatDistance > maximumPathDistance)
{
continue;
}
InclineLinkData newPathLinkData = new InclineLinkData(newFloatIncline, newFloatDecline, newFloatDistance);
bool foundAnyBetter = false;
int iAmBetterThanThisIndex = -1;
if (bestPaths.ContainsKey(newPoint))
{
for (int existingPathIndex = 0; existingPathIndex < bestPaths[newPoint].Count; ++existingPathIndex)
{
InclineLinkData existingPath = bestPaths[newPoint][existingPathIndex];
// If an existing path is as good or better than us, then stop recursing.
if (existingPath.Equals(newPathLinkData) ||
existingPath.Dominates(newPathLinkData))
{
foundAnyBetter = true;
break;
}
if (newPathLinkData.Dominates(existingPath))
{
iAmBetterThanThisIndex = existingPathIndex;
break;
}
}
}
else
{
bestPaths[newPoint] = new List <InclineLinkData>();
}
if (iAmBetterThanThisIndex >= 0)
{
// found a better path than an existing one, remove the old one and recompute.
bestPaths[newPoint][iAmBetterThanThisIndex] = newPathLinkData;
pointIsDirty = true;
}
else if (!foundAnyBetter)
{
// Otherwise, add this path to the list of paths, and recurse.
bestPaths[newPoint].Add(newPathLinkData);
pointIsDirty = true;
}
}
if (pointIsDirty)
{
openPoints.Add(newPoint);
}
}
}
meshData.nodes[inclinePoint.X, inclinePoint.Z] = new InclineMeshNode();
// now, grab the links from our neighbors
for (int d = 0; d < 4; ++d)
{
int dx = 0;
int dz = 0;
switch (d)
{
case 0: dx = 1; dz = 0; break;
case 1: dx = 0; dz = 1; break;
case 2: dx = -1; dz = 0; break;
case 3: dx = 0; dz = -1; break;
default: Debug.LogError("invalid direction: " + d); continue;
}
InclineIndexPoint neighborInclinePoint = new InclineIndexPoint(inclinePoint.X + dx, inclinePoint.Z + dz);
Point neighborMapIndices = meshData.InclineIndicesToMapIndices(neighborInclinePoint);
if (!mapMetaData.IsWithinBounds(neighborMapIndices))
{
continue;
}
if (bestPaths.ContainsKey(neighborMapIndices))
{
/*
* foreach (InclineLinkData ild in bestPaths[neighborWorldPoint])
* {
* //Debug.LogFormat("from {0} {1} in dir {2}: {3}/{4}/{5}", inclinePoint.X, inclinePoint.Z, d, ild.incline, ild.decline, ild.distance);
* }
*/
meshData.nodes[inclinePoint.X, inclinePoint.Z].NeighborLinks[d] = bestPaths[neighborMapIndices];
// draw debug
//Debug.DrawLine(meshData.InclineIndicesToWorldPoint(inclinePoint), meshData.mapMetaData.getWorldPos(neighborMapIndices), Color.white, 25.0f);
}
}
}
