1 files changed, 280 insertions, 0 deletions
diff --git a/Runtime/Terrain/TerrainManager.cpp b/Runtime/Terrain/TerrainManager.cpp
new file mode 100644
index 0000000..3f3805f
--- /dev/null
+++ b/Runtime/Terrain/TerrainManager.cpp
@@ -0,0 +1,280 @@
+#include "UnityPrefix.h"
+#if ENABLE_TERRAIN
+#include "TerrainManager.h"
+#include "TerrainData.h"
+#include "TerrainInstance.h"
+#include "DetailRenderer.h"
+#include "TreeRenderer.h"
+#include "TerrainRenderer.h"
+#include "Runtime/BaseClasses/GameObject.h"
+#include "Runtime/Graphics/Transform.h"
+
+#include "Runtime/Camera/LightManager.h"
+using namespace std;
+
+#define LISTFOREACH(TYPE, X, Y) for (UNITY_LIST(kMemRenderer, TYPE)::iterator Y = X.begin(); Y != X.end(); ++Y)
+
+PROFILER_INFORMATION(gTerrainFlushDirty, "TerrainInstance.FlushDirty", kProfilerRender);
+PROFILER_INFORMATION(gTerrainRenderStep1, "Terrain.Heightmap.RenderStep1", kProfilerRender);
+PROFILER_INFORMATION(gTerrainRenderStep2, "Terrain.Heightmap.RenderStep2", kProfilerRender);
+PROFILER_INFORMATION(gTerrainRenderStep3, "Terrain.Heightmap.RenderStep3", kProfilerRender);
+PROFILER_INFORMATION(gTerrainDetailsRender, "Terrain.Details.Render", kProfilerRender);
+PROFILER_INFORMATION(gTerrainTreesRender, "Terrain.Trees.Render", kProfilerRender);
+
+void TerrainManager::InitializeClass ()
+{
+	SetITerrainManager (new TerrainManager());
+}
+
+void TerrainManager::CleanupClass ()
+{
+	TerrainManager* manager = reinterpret_cast<TerrainManager*> (GetITerrainManager());
+	delete manager;
+	SetITerrainManager (NULL);
+}
+
+TerrainManager::TerrainManager()
+: m_ActiveTerrain(NULL)
+{
+}
+
+
+bool TerrainManager::GetInterpolatedHeight (const Object* inTerrainData, const Vector3f& terrainPosition, const Vector3f& position, float& outputHeight)
+{
+	TerrainData* terrainData = dynamic_pptr_cast<TerrainData*> (inTerrainData);
+	if (terrainData == NULL)
+		return false;
+	
+	const Vector3f terrainSize (terrainData->GetHeightmap ().GetSize ());
+	const Vector3f localPosition = Scale (position-terrainPosition, Inverse (terrainSize));
+	
+	// Outside of terrain.. Skip.
+	if (localPosition.x > 1.0f || localPosition.x < 0.0f || localPosition.z > 1.0f || localPosition.z < 0.0f)
+		return false;
+	
+	outputHeight = terrainPosition.y + terrainData->GetHeightmap ().GetInterpolatedHeight (localPosition.x, localPosition.z);
+	return true;
+}
+
+void TerrainManager::CullAllTerrains(int cullingMask)
+{
+	m_TempCulledTerrains.clear();
+
+	// Generate basic terrain data and do basic tessellation
+	LISTFOREACH(TerrainInstance*, m_ActiveTerrains, i)
+	{
+		TerrainInstance* terrain = (*i);
+
+		int terrainLayer = terrain->m_GameObject->GetLayer();
+		if( ((1<<terrainLayer) & cullingMask) == 0 )
+			continue;
+
+		m_TempCulledTerrains.push_back(*i);
+		const Vector3f& currentTerrrainPosition = terrain->GetPosition();
+		if (currentTerrrainPosition != terrain->m_Position)
+		{
+			terrain->m_Position = currentTerrrainPosition;
+			terrain->Flush ();
+		}
+
+		terrain->GarbageCollectRenderers ();
+		PROFILER_BEGIN(gTerrainFlushDirty, NULL)
+		terrain->FlushDirty ();
+		PROFILER_END
+
+		PROFILER_BEGIN(gTerrainRenderStep1, NULL)
+		const TerrainInstance::Renderer* renderer = terrain->GetRenderer ();
+		if (renderer != NULL)
+		{
+		// Draw terrain
+			terrain->m_TerrainData->GetSplatDatabase().RecalculateBasemapIfDirty();
+	
+			if (terrain->NeedRenderTerrainGeometry())
+			{
+				float splatMapDistance = terrain->m_EditorRenderFlags == TerrainInstance::kRenderHeightmap ? FLT_MAX : terrain->m_SplatMapDistance;
+				renderer->terrain->RenderStep1 (renderer->camera, terrain->m_HeightmapMaximumLOD, terrain->m_HeightmapPixelError, splatMapDistance);
+			}
+		}
+		PROFILER_END
+	}
+
+	// Setup neighbors
+	LISTFOREACH(TerrainInstance*, m_TempCulledTerrains, i)
+	{
+		TerrainInstance* terrain = (*i);
+		TerrainRenderer* renderer = terrain->GetTerrainRendererDontCreate ();
+		if (renderer != NULL && terrain->NeedRenderTerrainGeometry())
+		{
+			// Find neighbor Terrains and update TerrainRenderer
+			TerrainRenderer* left = NULL, * right = NULL, * top = NULL, * bottom = NULL;
+			if (terrain->m_LeftNeighbor != NULL)
+				left = terrain->m_LeftNeighbor->GetTerrainRendererDontCreate ();
+			if (terrain->m_RightNeighbor != NULL)
+				right = terrain->m_RightNeighbor->GetTerrainRendererDontCreate ();
+			if (terrain->m_TopNeighbor != NULL)
+				top = terrain->m_TopNeighbor->GetTerrainRendererDontCreate ();
+			if (terrain->m_BottomNeighbor != NULL)
+				bottom = terrain->m_BottomNeighbor->GetTerrainRendererDontCreate ();
+			renderer->SetNeighbors(left, top, right, bottom);
+		}
+	}
+
+	// Apply force splitting on boundaries
+	LISTFOREACH(TerrainInstance*, m_TempCulledTerrains, i)
+	{
+		TerrainInstance* terrain = (*i);
+		TerrainRenderer* renderer = terrain->GetTerrainRendererDontCreate ();
+		if (renderer != NULL && terrain->NeedRenderTerrainGeometry())
+		{
+			PROFILER_BEGIN(gTerrainRenderStep2, NULL)
+			renderer->RenderStep2 ();
+			PROFILER_END
+		}
+	}
+
+	// Do the actual rendering
+	LISTFOREACH(TerrainInstance*, m_TempCulledTerrains, i)
+	{
+		TerrainInstance* terrain = (*i);
+		const TerrainInstance::Renderer* renderer = terrain->GetRenderer ();
+		if (renderer != NULL)
+		{
+			int terrainLayer = terrain->m_GameObject->GetLayer();
+
+			UNITY_VECTOR(kMemRenderer, Light*) lights = GetLightManager().GetLights(kLightDirectional, terrainLayer);
+
+			PROFILER_BEGIN(gTerrainRenderStep3, NULL)
+			if (terrain->NeedRenderTerrainGeometry())
+			{
+				renderer->terrain->RenderStep3 (renderer->camera, terrainLayer, terrain->m_CastShadows, terrain->m_MaterialTemplate);
+			}
+			PROFILER_END
+
+			PROFILER_BEGIN(gTerrainDetailsRender, NULL)
+			if (terrain->NeedRenderDetails())
+			{
+				renderer->details->Render (renderer->camera, terrain->m_DetailObjectDistance, terrainLayer, terrain->m_DetailObjectDensity);
+			}
+			PROFILER_END
+
+			PROFILER_BEGIN(gTerrainTreesRender, NULL)
+			if (terrain->NeedRenderTrees())
+			{
+				renderer->trees->Render (*renderer->camera, lights, terrain->m_TreeBillboardDistance, terrain->m_TreeDistance, terrain->m_TreeCrossFadeLength, terrain->m_TreeMaximumFullLODCount, terrainLayer);
+			}
+			PROFILER_END
+			//				terrain.m_DebugTreeRenderTex = renderer.trees.GetImposterRenderTexture();
+		}
+	}
+}
+
+void TerrainManager::SetLightmapIndexOnAllTerrains (int lightmapIndex)
+{
+	LISTFOREACH(TerrainInstance*, m_ActiveTerrains, terrain)
+	{
+		(*terrain)->SetLightmapIndex(lightmapIndex);
+	}
+}
+
+/// Creates a Terrain including collider from [[TerrainData]]
+PPtr<GameObject> TerrainManager::CreateTerrainGameObject (const TerrainData& assignTerrain)
+{
+/*	// Also create the renderer game object
+#if ENABLE_PHYSICS
+	GameObject* go = &CreateGameObjectWithHideFlags ("Terrain", true, 0, "Terrain", NULL, NULL); 
+#else
+	GameObject* go = &CreateGameObjectWithHideFlags ("Terrain", true, 0, "Terrain", NULL, NULL); 
+#endif
+	go->SetIsStatic (true);
+	TerrainInstance* terrain = go.GetComponent(typeof(Terrain)) as Terrain;
+#if ENABLE_PHYSICS
+	TerrainCollider collider = go.GetComponent(typeof(TerrainCollider)) as TerrainCollider;
+	collider.terrainData = assignTerrain;
+	terrain.terrainData = assignTerrain;
+#endif
+	// The terrain already got an OnEnable, but the terrain data had not been set up correctly.
+	terrain->OnEnable ();
+
+	return go;*/
+	return NULL;
+}
+
+void TerrainManager::AddTerrainAndSetActive(TerrainInstance* terrain)
+{
+	if (std::find(m_ActiveTerrains.begin(), m_ActiveTerrains.end(), terrain) == m_ActiveTerrains.end())
+		m_ActiveTerrains.push_back(terrain);
+
+	m_ActiveTerrain = terrain;
+}
+
+void TerrainManager::RemoveTerrain(TerrainInstance* terrain)
+{
+	TerrainList::iterator i = std::find(m_ActiveTerrains.begin(), m_ActiveTerrains.end(), terrain);
+	if (i != m_ActiveTerrains.end())
+		m_ActiveTerrains.erase(i);
+
+	if (m_ActiveTerrain == terrain)
+		m_ActiveTerrain = NULL;
+}
+
+void TerrainManager::UnloadTerrainsFromGfxDevice()
+{
+	LISTFOREACH(TerrainInstance*, m_ActiveTerrains, terrain)
+	{
+		dynamic_array<TerrainInstance::Renderer> renderers = (*terrain)->m_Renderers;
+		for (int i = 0; i < renderers.size(); ++i)
+		{
+			renderers[i].terrain->UnloadVBOFromGfxDevice();
+		}
+	}
+}
+
+void TerrainManager::ReloadTerrainsToGfxDevice()
+{
+	LISTFOREACH(TerrainInstance*, m_ActiveTerrains, terrain)
+	{
+		dynamic_array<TerrainInstance::Renderer> renderers = (*terrain)->m_Renderers;
+		for (int i = 0; i < renderers.size(); ++i)
+		{
+			renderers[i].terrain->ReloadVBOToGfxDevice();
+		}
+	}
+}
+
+#if ENABLE_PHYSICS
+NxHeightField* TerrainManager::Heightmap_GetNxHeightField(Heightmap& heightmap)
+{
+	return heightmap.GetNxHeightField();
+}
+#endif
+
+int TerrainManager::Heightmap_GetMaterialIndex(Heightmap& heightmap)
+{
+	return heightmap.GetMaterialIndex();
+}
+
+Vector3f TerrainManager::Heightmap_GetSize(Heightmap& heightmap)
+{
+	return heightmap.GetSize();
+}
+
+void TerrainManager::CollectTreeRenderers(dynamic_array<SceneNode>& sceneNodes, dynamic_array<AABB>& boundingBoxes) const
+{
+	for (TerrainList::const_iterator it = m_ActiveTerrains.begin(); it != m_ActiveTerrains.end(); ++it)
+	{
+		if (!(*it)->NeedRenderTrees())
+		{
+			continue;
+		}
+
+		const TerrainInstance::Renderer* renderer = (*it)->GetRenderer();
+		if (renderer != NULL && renderer->trees != NULL)
+		{
+			renderer->trees->CollectTreeRenderers(sceneNodes, boundingBoxes);
+		}
+	}
+}
+
+#undef  LISTFOREACH
+
+#endif