public List <ObjectPlacementData> Calculate()
{
if (_block == null || _block.NumberOfSegments == 0 || !ObjectPlacementGuide.ExistsInScene)
{
return(new List <ObjectPlacementData>());
}
Prefab placementGuidePrefab = ObjectPlacementGuide.Instance.SourcePrefab;
Vector3 placementGuideWorldScale = ObjectPlacementGuide.Instance.WorldScale;
Quaternion placementGuideWorldRotation = ObjectPlacementGuide.Instance.WorldRotation;
float objectMissChance = _block.Settings.ManualConstructionSettings.ObjectMissChance;
ObjectRotationRandomizationSettings blockObjectRotationRandomizationSettings = _block.Settings.ManualConstructionSettings.ObjectRotationRandomizationSettings;
bool randomizeRotations = blockObjectRotationRandomizationSettings.RandomizeRotation;
Vector3 objectOffsetAlongExtensionPlaneNormal = _block.Settings.ManualConstructionSettings.OffsetAlongGrowDirection * _block.ExtensionPlane.normal;
bool allowObjectIntersection = ObjectPlacementSettings.Get().ObjectIntersectionSettings.AllowIntersectionForBlockPlacement;
bool randomizePrefabs = _block.Settings.ManualConstructionSettings.RandomizePrefabs;
PrefabCategory activePrefabCategory = PrefabCategoryDatabase.Get().ActivePrefabCategory;
ObjectPlacementBlockProjectionSettings projectionSettings = _block.Settings.BlockProjectionSettings;
bool canProject = projectionSettings.ProjectOnSurface &&
(projectionSettings.CanProjectOnMesh || projectionSettings.CanProjectOnTerrain);
var objectPlacementDataInstances = new List <ObjectPlacementData>(_block.NumberOfSegments * 10);
for (int segmentIndex = 0; segmentIndex < _block.NumberOfSegments; ++segmentIndex)
{
ObjectPlacementBoxStackSegment segment = _block.GetSegmentByIndex(segmentIndex);
for (int stackIndex = 0; stackIndex < segment.NumberOfStacks; ++stackIndex)
{
ObjectPlacementBoxStack stack = segment.GetStackByIndex(stackIndex);
if (stack.IsOverlappedByAnotherStack || stack.NumberOfBoxes == 0)
{
continue;
}
Vector3 projectionOffset = Vector3.zero;
Vector3 projectionDirection = Vector3.zero;
Quaternion prjAlignRotation = Quaternion.identity;
GameObjectRayHit projectionSurfaceHit = null;
if (canProject)
{
Vector3 rayOrigin = stack.GetBoxByIndex(0).Center;
Vector3 rayDir = Vector3.zero;
if (projectionSettings.ProjectionDirection == ObjectBlockProjectionDir.BlockUp)
{
rayDir = _block.ExtensionPlane.normal;
}
else
{
rayDir = -_block.ExtensionPlane.normal;
}
projectionDirection = rayDir;
Ray ray = new Ray(rayOrigin, rayDir);
GameObjectRayHit closestMeshHit = null;
GameObjectRayHit closestTerrainHit = null;
if (projectionSettings.CanProjectOnMesh)
{
closestMeshHit = Octave3DScene.Get().RaycastAllMeshClosest(ray);
}
if (projectionSettings.CanProjectOnTerrain)
{
closestTerrainHit = Octave3DScene.Get().RaycastAllTerainsClosest(ray);
}
// Ignore stack if no surface was found and non-projectables must be rejected
if (closestMeshHit == null && closestTerrainHit == null)
{
if (projectionSettings.RejectNonProjectables)
{
continue;
}
}
else
{
projectionSurfaceHit = closestMeshHit;
if (closestMeshHit == null || (closestTerrainHit != null && closestMeshHit.HitEnter > closestTerrainHit.HitEnter))
{
projectionSurfaceHit = closestTerrainHit;
}
}
if (projectionSurfaceHit != null)
{
ObjectPlacementBox projectionBox = stack.GetBoxByIndex(0);
projectionOffset = projectionSurfaceHit.HitPoint - stack.GetBoxByIndex(0).Center;
if (projectionOffset.sqrMagnitude > (projectionSurfaceHit.HitPoint - stack.GetBoxByIndex(stack.NumberOfBoxes - 1).Center).sqrMagnitude)
{
projectionBox = stack.GetBoxByIndex(stack.NumberOfBoxes - 1);
projectionOffset = projectionSurfaceHit.HitPoint - projectionBox.Center;
}
if (!projectionSettings.AlignToSurfaceNormal)
{
var oobb = projectionBox.OrientedBox;
Vector3 oldCenter = oobb.Center;
GameObjectExtensions.EmbedObjectBoxInSurface(oobb, projectionDirection, projectionSurfaceHit.HitObject);
projectionOffset = oobb.Center - oldCenter;
}
}
}
for (int stackBoxIndex = 0; stackBoxIndex < stack.NumberOfBoxes; ++stackBoxIndex)
{
ObjectPlacementBox box = stack.GetBoxByIndex(stackBoxIndex);
if (box.IsHidden)
{
continue;
}
if (ObjectPlacementMissChance.Missed(objectMissChance, ObjectPlacementBlockManualConstructionSettings.MinObjectMissChance,
ObjectPlacementBlockManualConstructionSettings.MaxObjectMissChance))
{
continue;
}
if (!allowObjectIntersection && ObjectQueries.IntersectsAnyObjectsInScene(box.OrientedBox, true))
{
continue;
}
Quaternion worldRotation = placementGuideWorldRotation;
if (randomizeRotations)
{
worldRotation = ObjectRotationRandomization.GenerateRandomRotationQuaternion(blockObjectRotationRandomizationSettings);
}
Vector3 worldScale = placementGuideWorldScale;
Prefab prefab = placementGuidePrefab;
if (randomizePrefabs && activePrefabCategory.NumberOfPrefabs != 0)
{
int randomPrefabIndex = UnityEngine.Random.Range(0, activePrefabCategory.NumberOfPrefabs);
Prefab randomPrefab = activePrefabCategory.GetPrefabByIndex(randomPrefabIndex);
if (randomPrefab != null && randomPrefab.UnityPrefab != null)
{
prefab = activePrefabCategory.GetPrefabByIndex(randomPrefabIndex);
worldScale = prefab.UnityPrefab.transform.lossyScale;
}
}
Vector3 boxCenter = box.Center + objectOffsetAlongExtensionPlaneNormal + projectionOffset;
if (projectionSurfaceHit != null)
{
if (projectionSettings.AlignToSurfaceNormal)
{
worldRotation = AxisAlignment.CalculateRotationQuaternionForAxisAlignment(worldRotation, projectionSettings.AlignmentAxis, projectionSurfaceHit.HitNormal);
OrientedBox prefabWorldOOBB = prefab.UnityPrefab.GetHierarchyWorldOrientedBox();
Vector3 oobbSize = prefabWorldOOBB.ScaledSize;
int axisIndex = (int)((int)(projectionSettings.AlignmentAxis) * 0.5f);
boxCenter = projectionSurfaceHit.HitPoint + projectionSurfaceHit.HitNormal * oobbSize[axisIndex] * 0.5f + (oobbSize[axisIndex] * stackBoxIndex * projectionSurfaceHit.HitNormal);
}
}
var objectPlacementData = new ObjectPlacementData();
objectPlacementData.WorldPosition = ObjectPositionCalculator.CalculateObjectHierarchyPosition(prefab, boxCenter, worldScale, worldRotation);
objectPlacementData.WorldScale = worldScale;
objectPlacementData.WorldRotation = worldRotation;
objectPlacementData.Prefab = prefab;
objectPlacementDataInstances.Add(objectPlacementData);
}
}
}
return(objectPlacementDataInstances);
}