public bool Build(ShapeCollection staticGeometries, ref int numGeometryVertices, ref int numGeometryTriangles)
{
if (!HasEngineInstance())
{
return(false);
}
EngineNavMesh.ClearNavMesh();
EngineNavMesh.ClearGeometry();
EngineNavMesh.ClearCarvers();
EngineNavMesh.ClearSeedPoints();
EngineNavMesh.ClearLocalSettings();
EngineNavMesh.ClearDecorationCapsules();
SetEngineInstanceBaseProperties();
HavokNavMeshGlobalSettings globalSettings = GetGlobalSettings();
if (globalSettings == null)
{
return(false);
}
BoundingBox parentZoneBbox = new BoundingBox();
if (globalSettings.RestrictToInputGeometryFromSameZone && ParentZone != null)
{
parentZoneBbox = ParentZone.CalculateBoundingBox();
}
// check if there's a parent zone
foreach (ShapeBase shape in staticGeometries)
{
// treat as cutter if flag is set and if in different zone
bool potentiallyTreatAsCutter = globalSettings.RestrictToInputGeometryFromSameZone && (shape.ParentZone != ParentZone);
if (shape is EntityShape)
{
EntityShape entity = shape as EntityShape;
eNavMeshUsage usage = entity.GetNavMeshUsage();
// exclude entities that have a vHavokRigidBody component with "Motion Type" != "Fixed"
ShapeComponentType compType = (ShapeComponentType)EditorManager.EngineManager.ComponentClassManager.GetCollectionType("vHavokRigidBody");
if (compType != null && entity.Components != null)
{
ShapeComponent comp = entity.Components.GetComponentByType(compType);
if (comp != null)
{
string propValue = comp.GetPropertyValue("Motion Type") as string;
if (string.Compare(propValue, "Fixed") != 0)
{
usage = eNavMeshUsage.ExcludeFromNavMesh;
}
}
}
// potentially override usage
if (potentiallyTreatAsCutter && (usage == eNavMeshUsage.IncludeInNavMesh))
{
usage = eNavMeshUsage.CutterOnly;
}
if (usage != eNavMeshUsage.ExcludeFromNavMesh)
{
EngineNavMesh.AddEntityGeometry(entity.EngineEntity.GetNativeObject(), (int)usage, parentZoneBbox);
}
}
else if (shape is StaticMeshShape)
{
StaticMeshShape staticMesh = shape as StaticMeshShape;
eNavMeshUsage usage = staticMesh.GetNavMeshUsage();
// potentially override usage
if (potentiallyTreatAsCutter && (usage == eNavMeshUsage.IncludeInNavMesh))
{
usage = eNavMeshUsage.CutterOnly;
}
if (usage != eNavMeshUsage.ExcludeFromNavMesh)
{
EngineNavMesh.AddStaticMeshGeometry(staticMesh.EngineMesh.GetNativeObject(), (int)usage, parentZoneBbox);
}
}
else if (shape is TerrainShape)
{
TerrainShape terrain = shape as TerrainShape;
eNavMeshUsage usage = terrain.GetNavMeshUsage();
// potentially override usage
if (potentiallyTreatAsCutter && (usage == eNavMeshUsage.IncludeInNavMesh))
{
usage = eNavMeshUsage.CutterOnly;
}
if (usage != eNavMeshUsage.ExcludeFromNavMesh)
{
EngineNavMesh.AddTerrainGeometry(terrain.EngineTerrain.GetNativeObject(), (int)usage, parentZoneBbox);
}
}
#if !HK_ANARCHY
else if (shape is DecorationGroupShape)
{
DecorationGroupShape decorationGroup = shape as DecorationGroupShape;
// Please note that currently the native HavokAiEnginePlugin only supports decoration capsules as cutters.
if (decorationGroup.GetNavMeshLimitedUsage() == DecorationGroupShape.eNavMeshLimitedUsage.CutterOnly)
{
EngineNavMesh.AddDecorationGroupCapsules(decorationGroup.EngineGroup.GetGroupsObject());
}
}
#endif
#if USE_SPEEDTREE
else if (shape is Speedtree6GroupShape)
{
Speedtree6GroupShape trees = shape as Speedtree6GroupShape;
if (trees.EnableCollisions)
{
EngineNavMesh.AddSpeedTree6Capsules(trees.EngineGroup.GetGroupsObject());
}
}
#endif
}
numGeometryVertices = EngineNavMesh.GetNumGeometryVertices();
numGeometryTriangles = EngineNavMesh.GetNumGeometryTriangles();
// Add carvers
ShapeCollection carvers = EditorManager.Scene.AllShapesOfType(typeof(HavokNavMeshCarverShape));
foreach (ShapeBase shape in carvers)
{
HavokNavMeshCarverShape carver = shape as HavokNavMeshCarverShape;
BoundingBox localBbox = null;
carver.GetLocalBoundingBox(ref localBbox);
localBbox.vMin.X *= carver.ScaleX;
localBbox.vMin.Y *= carver.ScaleY;
localBbox.vMin.Z *= carver.ScaleZ;
localBbox.vMax.X *= carver.ScaleX;
localBbox.vMax.Y *= carver.ScaleY;
localBbox.vMax.Z *= carver.ScaleZ;
EngineNavMesh.AddBoxCarver(localBbox.vMin, localBbox.vMax, carver.Position, carver.RotationMatrix, carver.IsInverted());
}
// Add seed points
ShapeCollection seedPoints = EditorManager.Scene.AllShapesOfType(typeof(HavokNavMeshSeedPointShape));
foreach (ShapeBase shape in seedPoints)
{
HavokNavMeshSeedPointShape seedPoint = shape as HavokNavMeshSeedPointShape;
EngineNavMesh.AddSeedPoint(seedPoint.Position);
}
// Add local settings
ShapeCollection localSettings = EditorManager.Scene.AllShapesOfType(typeof(HavokNavMeshLocalSettingsShape));
foreach (ShapeBase shape in localSettings)
{
HavokNavMeshLocalSettingsShape ls = shape as HavokNavMeshLocalSettingsShape;
BoundingBox bbox = null;
ls.GetLocalBoundingBox(ref bbox);
bbox.vMin.X *= ls.ScaleX;
bbox.vMin.Y *= ls.ScaleY;
bbox.vMin.Z *= ls.ScaleZ;
bbox.vMax.X *= ls.ScaleX;
bbox.vMax.Y *= ls.ScaleY;
bbox.vMax.Z *= ls.ScaleZ;
// Nav Mesh Generation Settings
EngineNavMesh.m_maxWalkableSlope = ls.MaxWalkableSlope / 180.0f * 3.14159f;
// Nav Mesh Edge Matching Settings
EngineNavMesh.m_maxStepHeight = ls.MaxStepHeight;
EngineNavMesh.m_maxSeparation = ls.MaxSeparation;
EngineNavMesh.m_maxOverhang = ls.MaxOverhang;
EngineNavMesh.m_cosPlanarAlignmentAngle = (float)Math.Cos(ls.PlanarAlignmentAngle / 180.0f * 3.14159f);
EngineNavMesh.m_cosVerticalAlignmentAngle = (float)Math.Cos(ls.VerticalAlignmentAngle / 180.0f * 3.14159f);
EngineNavMesh.m_minEdgeOverlap = ls.MinEdgeOverlap;
// Nav Mesh Simplification Settings
EngineNavMesh.m_maxBorderSimplifyArea = ls.MaxBorderSimplifyArea;
EngineNavMesh.m_maxConcaveBorderSimplifyArea = ls.MaxConcaveBorderSimplifyArea;
EngineNavMesh.m_useHeightPartitioning = ls.UseHeightPartitioning;
EngineNavMesh.m_maxPartitionHeightError = ls.MaxPartitionHeightError;
// Nav Mesh Simplification Settings (Advanced)
EngineNavMesh.m_minCorridorWidth = ls.MinCorridorWidth;
EngineNavMesh.m_maxCorridorWidth = ls.MaxCorridorWidth;
EngineNavMesh.m_holeReplacementArea = ls.HoleReplacementArea;
EngineNavMesh.m_maxLoopShrinkFraction = ls.MaxLoopShrinkFraction;
EngineNavMesh.m_maxBorderHeightError = ls.MaxBorderHeightError;
EngineNavMesh.m_maxBorderDistanceError = ls.MaxBorderDistanceError;
EngineNavMesh.m_maxPartitionSize = ls.MaxPartitionSize;
EngineNavMesh.m_useConservativeHeightPartitioning = ls.UseConservativeHeightPartitioning;
EngineNavMesh.m_hertelMehlhornHeightError = ls.HertelMehlhornHeightError;
EngineNavMesh.m_cosPlanarityThreshold = (float)Math.Cos(ls.PlanarityThreshold / 180 * 3.14159f);
EngineNavMesh.m_nonconvexityThreshold = ls.NonconvexityThreshold;
EngineNavMesh.m_boundaryEdgeFilterThreshold = ls.BoundaryEdgeFilterThreshold;
EngineNavMesh.m_maxSharedVertexHorizontalError = ls.MaxSharedVertexHorizontalError;
EngineNavMesh.m_maxSharedVertexVerticalError = ls.MaxSharedVertexVerticalError;
EngineNavMesh.m_maxBoundaryVertexHorizontalError = ls.MaxBoundaryVertexHorizontalError;
EngineNavMesh.m_maxBoundaryVertexVerticalError = ls.MaxBoundaryVertexVerticalError;
EngineNavMesh.m_mergeLongestEdgesFirst = ls.MergeLongestEdgesFirst;
EngineNavMesh.AddLocalSettings(bbox.vMin, bbox.vMax, ls.Position, ls.RotationMatrix);
}
// todo: figure out how to pass class instances between here and EngineNavMesh.
// basically the settings members of EngineNavMesh are reused for transferring the local settings to
// EngineNavMesh. this should be harmless due to the following call which will revert any changes.
SetEngineInstanceBaseProperties();
string fullSnapshotPath = Path.Combine(CSharpFramework.EditorManager.Scene.Project.ProjectDir, m_snapshotFilename);
bool ret = EngineNavMesh.BuildNavMeshFromGeometry(m_saveInputSnapshot, fullSnapshotPath);
EngineNavMesh.ClearGeometry();
EngineNavMesh.ClearCarvers();
EngineNavMesh.ClearSeedPoints();
EngineNavMesh.ClearLocalSettings();
EngineNavMesh.ClearDecorationCapsules();
return(ret);
}
