public MeshSourceMap(NavMeshBuildSettings buildSettings)
{
BuildSettings = buildSettings;
TileSources = new NativeMultiHashMap <int2, int>(256, Allocator.Persistent);
IdIndex = new NativeHashMap <int, MeshSource>(256, Allocator.Persistent);
CustomIdToIdIndex = new NativeHashMap <int, int>(256, Allocator.Persistent);
}
public unsafe void TestSourceMap()
{
GameObject gameObject = GameObject.CreatePrimitive(PrimitiveType.Cube);
Mesh mesh = gameObject.GetComponent <MeshFilter>().sharedMesh;
Object.DestroyImmediate(gameObject);
var sharedData = MeshSourceData.Create(mesh);
MeshSourceMap map = new MeshSourceMap(NavMeshBuildSettings.Default());
float4x4 localToWorld = float4x4.TRS(default, default, new float3(40f, 40f, 40f));
/// <summary>
/// Calculates X-Z span for a navigation mesh tile. The Y-axis will span from <see cref="float.MinValue"/> to <see cref="float.MaxValue"/>
/// </summary>
public static DtBoundingBox CalculateTileBoundingBox(NavMeshBuildSettings settings, int2 tileCoord)
{
float tcs = settings.TileSize * settings.CellSize;
float2 tileMin = new float2(tileCoord.x * tcs, tileCoord.y * tcs);
float2 tileMax = tileMin + new float2(tcs);
DtBoundingBox boundingBox = default;
boundingBox.min.x = tileMin.x;
boundingBox.min.z = tileMin.y;
boundingBox.max.x = tileMax.x;
boundingBox.max.z = tileMax.y;
boundingBox.min.y = float.MinValue;
boundingBox.max.y = float.MaxValue;
return(boundingBox);
}
public static NativeList <int2> GetOverlappingTiles(NavMeshBuildSettings settings, DtBoundingBox boundingBox)
{
NativeList <int2> ret = new NativeList <int2>(Allocator.Temp);
float tcs = settings.TileSize * settings.CellSize;
float2 start = boundingBox.min.xz / tcs;
float2 end = boundingBox.max.xz / tcs;
int2 startTile = new int2(
(int)Math.Floor(start.x),
(int)Math.Floor(start.y));
int2 endTile = new int2(
(int)Math.Ceiling(end.x),
(int)Math.Ceiling(end.y));
for (int y = startTile.y; y < endTile.y; y++)
{
for (int x = startTile.x; x < endTile.x; x++)
{
ret.Add(new int2(x, y));
}
}
return(ret);
}
public void SetDefaultSettings()
{
BuildSettings = NavMeshBuildSettings.Default();
AgentSettings = NavAgentSettings.Default();
}
public NavMeshBuilder(NavMeshBuildSettings buildSettings, NavAgentSettings agentSettings)
{
BuildSettings = buildSettings;
AgentSettings = agentSettings;
}
private unsafe int BuildTile(int2 tileCoordinate, NavMeshBuildSettings buildSettings, NavAgentSettings agentSettings,
NavMeshBuildInput buildInput, long buildTimeStamp, out NavMeshTile meshTile)
{
meshTile = null;
if (buildInput.AreasLength != buildInput.IndicesLength / 3)
{
return(-1001);
}
if (buildInput.VerticesLength <= 0 || buildInput.IndicesLength <= 0)
{
return(-1000);
}
DtBoundingBox tileBoundingBox = NavMeshBuildUtils.CalculateTileBoundingBox(buildSettings, tileCoordinate);
NavMeshBuildUtils.SnapBoundingBoxToCellHeight(buildSettings, ref tileBoundingBox);
tileBoundingBox.min.y = HeightBounds.min.y;
tileBoundingBox.max.y = HeightBounds.max.y;
IntPtr builder = Navigation.NavMesh.CreateBuilder();
DtBuildSettings internalBuildSettings = new DtBuildSettings
{
// Tile settings
BoundingBox = tileBoundingBox,
TilePosition = tileCoordinate,
TileSize = buildSettings.TileSize,
// General build settings
CellHeight = buildSettings.CellHeight,
CellSize = buildSettings.CellSize,
RegionMinArea = buildSettings.MinRegionArea,
RegionMergeArea = buildSettings.RegionMergeArea,
EdgeMaxLen = buildSettings.MaxEdgeLen,
EdgeMaxError = buildSettings.MaxEdgeError,
DetailSampleDist = buildSettings.DetailSamplingDistance,
DetailSampleMaxError = buildSettings.MaxDetailSamplingError,
// Agent settings
AgentHeight = agentSettings.Height,
AgentRadius = agentSettings.Radius,
AgentMaxClimb = agentSettings.MaxClimb,
AgentMaxSlope = agentSettings.MaxSlope
};
Navigation.NavMesh.SetSettings(builder, new IntPtr(&internalBuildSettings));
IntPtr buildResultPtr = Navigation.NavMesh.Build2(builder, buildInput.Vertices, buildInput.VerticesLength, buildInput.Indices, buildInput.IndicesLength, buildInput.Areas);
DtGeneratedData *generatedDataPtr = (DtGeneratedData *)buildResultPtr;
if (generatedDataPtr->Success && generatedDataPtr->NavmeshDataLength > 0)
{
meshTile = new NavMeshTile();
// Copy the generated navigationMesh data
meshTile.Data = new byte[generatedDataPtr->NavmeshDataLength + sizeof(long)];
Marshal.Copy(generatedDataPtr->NavmeshData, meshTile.Data, 0, generatedDataPtr->NavmeshDataLength);
// Append time stamp
byte[] timeStamp = BitConverter.GetBytes(buildTimeStamp);
for (int i = 0; i < timeStamp.Length; i++)
{
meshTile.Data[meshTile.Data.Length - sizeof(long) + i] = timeStamp[i];
}
}
int error = generatedDataPtr->Error;
Navigation.NavMesh.DestroyBuilder(builder);
return(error);
}
/// <summary>
/// Snaps a <see cref="DtBoundingBox"/>'s height according to the given <see cref="NavMeshBuildSettings"/>
/// </summary>
/// <param name="settings">The build settings</param>
/// <param name="boundingBox">Reference to the bounding box to snap</param>
public static void SnapBoundingBoxToCellHeight(NavMeshBuildSettings settings, ref DtBoundingBox boundingBox)
{
// Snap Y to tile height to avoid height differences between tiles
boundingBox.min.y = (float)Math.Floor(boundingBox.min.y / settings.CellHeight) * settings.CellHeight;
boundingBox.max.y = (float)Math.Ceiling(boundingBox.max.y / settings.CellHeight) * settings.CellHeight;
}
public NavMeshBuilderSettings(int id, NavMeshBuildSettings buildSettings, NavAgentSettings agentSettings)
{
Id = id;
BuildSettings = buildSettings;
AgentSettings = agentSettings;
}