public int syncNode(int availableNodeSyncs, GameObject voxelTerrainGameObject)
{
int nodeSyncsPerformed = 0;
if (availableNodeSyncs <= 0)
{
return(nodeSyncsPerformed);
}
uint meshLastUpdated = CubiquityDLL.GetMeshLastUpdated(nodeHandle);
if (meshLastSyncronised < meshLastUpdated)
{
if (CubiquityDLL.NodeHasMesh(nodeHandle) == 1)
{
// Set up the rendering mesh
VolumeRenderer volumeRenderer = voxelTerrainGameObject.GetComponent <VolumeRenderer>();
if (volumeRenderer != null)
{
//Mesh renderingMesh = volumeRenderer.BuildMeshFromNodeHandle(nodeHandle);
Mesh renderingMesh = null;
if (voxelTerrainGameObject.GetComponent <Volume>().GetType() == typeof(TerrainVolume))
{
renderingMesh = BuildMeshFromNodeHandleForTerrainVolume(nodeHandle);
}
else if (voxelTerrainGameObject.GetComponent <Volume>().GetType() == typeof(ColoredCubesVolume))
{
renderingMesh = BuildMeshFromNodeHandleForColoredCubesVolume(nodeHandle);
}
MeshFilter meshFilter = gameObject.GetOrAddComponent <MeshFilter>() as MeshFilter;
MeshRenderer meshRenderer = gameObject.GetOrAddComponent <MeshRenderer>() as MeshRenderer;
if (meshFilter.sharedMesh != null)
{
DestroyImmediate(meshFilter.sharedMesh);
}
meshFilter.sharedMesh = renderingMesh;
meshRenderer.sharedMaterial = volumeRenderer.material;
#if UNITY_EDITOR
EditorUtility.SetSelectedWireframeHidden(meshRenderer, true);
#endif
}
// Set up the collision mesh
VolumeCollider volumeCollider = voxelTerrainGameObject.GetComponent <VolumeCollider>();
if ((volumeCollider != null) && (Application.isPlaying))
{
Mesh collisionMesh = volumeCollider.BuildMeshFromNodeHandle(nodeHandle);
MeshCollider meshCollider = gameObject.GetOrAddComponent <MeshCollider>() as MeshCollider;
meshCollider.sharedMesh = collisionMesh;
}
}
// If there is no mesh in Cubiquity then we make sure there isn't on in Unity.
else
{
MeshCollider meshCollider = gameObject.GetComponent <MeshCollider>() as MeshCollider;
if (meshCollider)
{
DestroyImmediate(meshCollider);
}
MeshRenderer meshRenderer = gameObject.GetComponent <MeshRenderer>() as MeshRenderer;
if (meshRenderer)
{
DestroyImmediate(meshRenderer);
}
MeshFilter meshFilter = gameObject.GetComponent <MeshFilter>() as MeshFilter;
if (meshFilter)
{
DestroyImmediate(meshFilter);
}
}
meshLastSyncronised = CubiquityDLL.GetCurrentTime();
availableNodeSyncs--;
nodeSyncsPerformed++;
}
VolumeRenderer vr = voxelTerrainGameObject.GetComponent <VolumeRenderer>();
MeshRenderer mr = gameObject.GetComponent <MeshRenderer>();
if (vr != null && mr != null)
{
if (mr.enabled != vr.enabled) // Not sure we really need this check?
{
mr.enabled = vr.enabled;
}
if (lastSyncronisedWithVolumeRenderer < vr.lastModified)
{
mr.receiveShadows = vr.receiveShadows;
mr.castShadows = vr.castShadows;
lastSyncronisedWithVolumeRenderer = Clock.timestamp;
}
}
VolumeCollider vc = voxelTerrainGameObject.GetComponent <VolumeCollider>();
MeshCollider mc = gameObject.GetComponent <MeshCollider>();
if (vc != null && mc != null)
{
if (mc.enabled != vc.enabled) // Not sure we really need this check?
{
mc.enabled = vc.enabled;
}
if (lastSyncronisedWithVolumeCollider < vc.lastModified)
{
// Actual syncronization to be filled in in the future when we have something to syncronize.
lastSyncronisedWithVolumeCollider = Clock.timestamp;
}
}
//Now syncronise any children
for (uint z = 0; z < 2; z++)
{
for (uint y = 0; y < 2; y++)
{
for (uint x = 0; x < 2; x++)
{
if (CubiquityDLL.HasChildNode(nodeHandle, x, y, z) == 1)
{
uint childNodeHandle = CubiquityDLL.GetChildNode(nodeHandle, x, y, z);
GameObject childGameObject = GetChild(x, y, z);
if (childGameObject == null)
{
childGameObject = OctreeNode.CreateOctreeNode(childNodeHandle, gameObject);
SetChild(x, y, z, childGameObject);
}
//syncNode(childNodeHandle, childGameObject);
OctreeNode childOctreeNode = childGameObject.GetComponent <OctreeNode>();
int syncs = childOctreeNode.syncNode(availableNodeSyncs, voxelTerrainGameObject);
availableNodeSyncs -= syncs;
nodeSyncsPerformed += syncs;
}
}
}
}
return(nodeSyncsPerformed);
}
//The purpose of availableNodeSyncs is because: This function is recursive. availableNodeSyncs tells it how deep to plumb
/// <summary>
/// A recursive function responsible for synchronizing Unity data with the CubiquityDLL data.
/// </summary>
/// <returns>The amount of synchronization steps left unexpended.</returns>
/// <param name="availableNodeSyncs">a parameter to track how much synchronization can and will be done from recrusive layer to recursive layer.</param>
public int SyncNode(int availableNodeSyncs)
{
//terminator of the all-powerful recursion
if (availableNodeSyncs <= 0)
{
return(0);
}
//-------------------------------------------
// PHASE ONE: Building Meshes!
//-------------------------------------------
//is a synchronization even called for?
uint meshLastUpdated = CubiquityDLL.GetMeshLastUpdated(nodeHandle);
//we don't have to synchronize this node if it wasn't updated.
if (meshLastSyncronised < meshLastUpdated)
{
//I like major control branches that are concise to read!
if (CubiquityDLL.NodeHasMesh(nodeHandle) == 1)
{
NodeMeshUp();
}
else
{
NodeMeshDown();
}
//absolutely do not decrement availableNodesyncs if no meshSyncing occured, or we'll never
//explore the whole tree @.@
meshLastSyncronised = CubiquityDLL.GetCurrentTime();
availableNodeSyncs--;
}
//-------------------------------------------
// PHASE TWO: RECURSE!
//-------------------------------------------
//we needs to know if any children were ever used in the making of this node. (that way we can children == null) at the end if necessary.
bool usedChildren = false;
//normally we would have to iterate across the two x children, the two y children, and the two z children using 3 nested
//for-loops. Typically speaking, nesting for loops in a recursive function causes nausea, dry mouth, dizzinss and vomiting.
//Let's flatten the array!
for (uint x = 0, y = 0, z = 0, i = 0;; x++, i++)
{
//iteration code!
if (x > 1)
{
y++; x = 0;
}
if (y > 1)
{
z++; y = 0;
}
if (z > 1)
{
break;
}
//At this point we know i is an element of [0,8)
//And we know children exists. So we can directly getChild by using children[i];
//Steps:
// 1) Ascertain whether we SHOULD have a unity node
// 2) Ascertain whether we have a children array to store the unity node in.
// 3) Ascertain whether we DO have a unity node
// 4) See if the unity node is right, and then Synchronize it.
//Test whether we have a child node and, if not, clean up leaves and bare branches
if (CubiquityDLL.HasChildNode(nodeHandle, x, y, z) != 1)
{
//check to make sure we aren't about to dispose and a nonexistant child/array.
//Use continue to check the next child
if (children == null)
{
continue;
}
if (children[i] == null)
{
continue;
}
//Testing will need to be done, but TECHNICALLY this should destroy not only the octree node, but all octree nodes that come afterward (because it is
//done on the game object, and the game object is the parent of the other octreenodes game objects)
Destroy(children[i].gameObject);
children[i] = null;
continue;
}
//if we need a child Node and haven't even a child array, we need to init the array.
else if (children == null)
{
children = new OctreeNodeAlt[8] {
null, null, null, null, null, null, null, null
};
}
//nab the child Node Handle
uint childNodeHandle = CubiquityDLL.GetChildNode(nodeHandle, x, y, z);
//and create the Unity-side child, if necessary
SetChild(i, childNodeHandle);
//and synchronize the child if syncs are available.
availableNodeSyncs = children[i].SyncNode(availableNodeSyncs);
//if even one spot in the childArray is used, we set this to true
usedChildren = true;
}
//delete children array to save space.
if (usedChildren == false)
{
children = null;
}
//return any Syncs we have left!
return(availableNodeSyncs);
}
public static void syncNode(ref uint availableSyncOperations, GameObject nodeGameObject, uint nodeHandle, GameObject voxelTerrainGameObject)
{
OctreeNode octreeNode = nodeGameObject.GetComponent <OctreeNode>();
CuOctreeNode cuOctreeNode = CubiquityDLL.GetOctreeNode(nodeHandle);
////////////////////////////////////////////////////////////////////////////////
// Has anything in this node or its children changed? If so, we may need to syncronise the node's properties, mesh and
// structure. Each of these can be tested against a timestamp. We may also need to do this recursively on child nodes.
////////////////////////////////////////////////////////////////////////////////
if (cuOctreeNode.nodeOrChildrenLastChanged > octreeNode.nodeAndChildrenLastSynced)
{
bool resyncedProperties = false; // See comments where this is tested - it's a bit of a hack
////////////////////////////////////////////////////////////////////////////////
// 1st test - Have the properties of the node changed?
////////////////////////////////////////////////////////////////////////////////
if (cuOctreeNode.propertiesLastChanged > octreeNode.propertiesLastSynced)
{
octreeNode.renderThisNode = cuOctreeNode.renderThisNode != 0;
octreeNode.height = cuOctreeNode.height;
octreeNode.propertiesLastSynced = CubiquityDLL.GetCurrentTime();
resyncedProperties = true;
}
////////////////////////////////////////////////////////////////////////////////
// 2nd test - Has the mesh changed and do we have time to syncronise it?
////////////////////////////////////////////////////////////////////////////////
if ((cuOctreeNode.meshLastChanged > octreeNode.meshLastSynced) && (availableSyncOperations > 0))
{
if (cuOctreeNode.hasMesh == 1)
{
// Set up the rendering mesh
VolumeRenderer volumeRenderer = voxelTerrainGameObject.GetComponent <VolumeRenderer>();
if (volumeRenderer != null)
{
MeshFilter meshFilter = nodeGameObject.GetOrAddComponent <MeshFilter>() as MeshFilter;
if (meshFilter.sharedMesh == null)
{
meshFilter.sharedMesh = new Mesh();
}
MeshRenderer meshRenderer = nodeGameObject.GetOrAddComponent <MeshRenderer>() as MeshRenderer;
if (voxelTerrainGameObject.GetComponent <Volume>().GetType() == typeof(TerrainVolume))
{
MeshConversion.BuildMeshFromNodeHandleForTerrainVolume(meshFilter.sharedMesh, nodeHandle, false);
}
else if (voxelTerrainGameObject.GetComponent <Volume>().GetType() == typeof(ColoredCubesVolume))
{
MeshConversion.BuildMeshFromNodeHandleForColoredCubesVolume(meshFilter.sharedMesh, nodeHandle, false);
}
meshRenderer.enabled = volumeRenderer.enabled && octreeNode.renderThisNode;
// For syncing materials, shadow properties, etc.
syncNodeWithVolumeRenderer(nodeGameObject, volumeRenderer, false);
}
// Set up the collision mesh
VolumeCollider volumeCollider = voxelTerrainGameObject.GetComponent <VolumeCollider>();
if (volumeCollider != null)
{
bool useCollider = volumeCollider.useInEditMode || Application.isPlaying;
if (useCollider)
{
// I'm not quite comfortable with this. For some reason we have to create this new mesh, fill it,
// and set it as the collider's shared mesh, whereas I would rather just pass the collider's sharedMesh
// straight to the functon that fills it. For some reason that doesn't work properly, and we see
// issues with objects falling through terrain or not updating when part of the terrain is deleted.
// It's to be investigated further... perhaps we could try deleting and recreating the MeshCollider?
// Still, the approach below seems to work properly.
Mesh collisionMesh = new Mesh();
if (voxelTerrainGameObject.GetComponent <Volume>().GetType() == typeof(TerrainVolume))
{
MeshConversion.BuildMeshFromNodeHandleForTerrainVolume(collisionMesh, nodeHandle, true);
}
else if (voxelTerrainGameObject.GetComponent <Volume>().GetType() == typeof(ColoredCubesVolume))
{
MeshConversion.BuildMeshFromNodeHandleForColoredCubesVolume(collisionMesh, nodeHandle, true);
}
MeshCollider meshCollider = nodeGameObject.GetOrAddComponent <MeshCollider>() as MeshCollider;
meshCollider.sharedMesh = collisionMesh;
}
}
}
// If there is no mesh in Cubiquity then we make sure there isn't one in Unity.
else
{
MeshCollider meshCollider = nodeGameObject.GetComponent <MeshCollider>() as MeshCollider;
if (meshCollider)
{
Utility.DestroyOrDestroyImmediate(meshCollider);
}
MeshRenderer meshRenderer = nodeGameObject.GetComponent <MeshRenderer>() as MeshRenderer;
if (meshRenderer)
{
Utility.DestroyOrDestroyImmediate(meshRenderer);
}
MeshFilter meshFilter = nodeGameObject.GetComponent <MeshFilter>() as MeshFilter;
if (meshFilter)
{
Utility.DestroyOrDestroyImmediate(meshFilter);
}
}
octreeNode.meshLastSynced = CubiquityDLL.GetCurrentTime();
availableSyncOperations--;
}
// We want to syncronize the properties before the mesh, so that the enabled flag can be set correctly when the mesh
// is created. But we also want to syncronize properties after the mesh, so we can apply the correct enabled flag to
// existing meshes when the node's 'renderThisNode' flag has changed. Therefore we set the 'resyncedProperties' flag
// previously to let ourseves know that we should come back an finish the propertiy syncing here. It's a bit of a hack.
if (resyncedProperties)
{
VolumeRenderer volumeRenderer = voxelTerrainGameObject.GetComponent <VolumeRenderer>();
if (volumeRenderer != null)
{
syncNodeWithVolumeRenderer(nodeGameObject, volumeRenderer, false);
}
VolumeCollider volumeCollider = voxelTerrainGameObject.GetComponent <VolumeCollider>();
if (volumeCollider != null)
{
syncNodeWithVolumeCollider(nodeGameObject, volumeCollider, false);
}
}
uint[, ,] childHandleArray = new uint[2, 2, 2];
childHandleArray[0, 0, 0] = cuOctreeNode.childHandle000;
childHandleArray[0, 0, 1] = cuOctreeNode.childHandle001;
childHandleArray[0, 1, 0] = cuOctreeNode.childHandle010;
childHandleArray[0, 1, 1] = cuOctreeNode.childHandle011;
childHandleArray[1, 0, 0] = cuOctreeNode.childHandle100;
childHandleArray[1, 0, 1] = cuOctreeNode.childHandle101;
childHandleArray[1, 1, 0] = cuOctreeNode.childHandle110;
childHandleArray[1, 1, 1] = cuOctreeNode.childHandle111;
////////////////////////////////////////////////////////////////////////////////
// 3rd test - Has the structure of the octree node changed (gained or lost children)?
////////////////////////////////////////////////////////////////////////////////
if (cuOctreeNode.structureLastChanged > octreeNode.structureLastSynced)
{
//Now syncronise any children
for (uint z = 0; z < 2; z++)
{
for (uint y = 0; y < 2; y++)
{
for (uint x = 0; x < 2; x++)
{
if (childHandleArray[x, y, z] != 0xFFFFFFFF)
{
uint childNodeHandle = childHandleArray[x, y, z];
if (octreeNode.GetChild(x, y, z) == null)
{
octreeNode.SetChild(x, y, z, OctreeNode.CreateOctreeNode(childNodeHandle, nodeGameObject));
}
}
else
{
if (octreeNode.GetChild(x, y, z))
{
Utility.DestroyOrDestroyImmediate(octreeNode.GetChild(x, y, z));
octreeNode.SetChild(x, y, z, null);
}
}
}
}
}
octreeNode.structureLastSynced = CubiquityDLL.GetCurrentTime();
}
////////////////////////////////////////////////////////////////////////////////
// The last step of syncronization is to apply it recursively to our children.
////////////////////////////////////////////////////////////////////////////////
for (uint z = 0; z < 2; z++)
{
for (uint y = 0; y < 2; y++)
{
for (uint x = 0; x < 2; x++)
{
if (octreeNode.GetChild(x, y, z) != null && availableSyncOperations > 0)
{
OctreeNode.syncNode(ref availableSyncOperations, octreeNode.GetChild(x, y, z), childHandleArray[x, y, z], voxelTerrainGameObject);
}
}
}
}
// We've reached the end of our syncronization process. If there are still sync operations available then
// we did less work then we could have, which implies we finished. Therefore mark the whole tree as synced.
if (availableSyncOperations > 0)
{
octreeNode.nodeAndChildrenLastSynced = CubiquityDLL.GetCurrentTime();
}
}
}