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using System.Collections;
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using System.Collections.Generic;
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using UnityEngine;
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using UnityEngine.SceneManagement;
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using System;
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using System.Linq;
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#if UNITY_EDITOR
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using UnityEditor;
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#endif
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namespace Gaia
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{
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[ExecuteAlways]
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public class GaiaScenePlayer : MonoBehaviour
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{
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private Camera m_camera;
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private float m_cameraFOV;
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private Vector3 m_FOVCenter;
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private Bounds m_worldSpaceBounds = new Bounds();
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private Plane[] m_planes = new Plane[6];
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private Terrain[] m_allTerrains = new Terrain[0];
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private MeshRenderer[] m_allTerrainMeshRenderers = new MeshRenderer[0];
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private void Start()
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{
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if (!GaiaUtils.CheckIfSceneProfileExists())
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{
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return;
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}
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m_camera = GaiaGlobal.Instance.m_mainCamera;
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m_allTerrains = Terrain.activeTerrains;
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//Collect all Mesh Terrains that are present at startup
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List<MeshRenderer> tempMeshRenderers = new List<MeshRenderer>();
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for (int i = 0; i < SceneManager.sceneCount; i++)
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{
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Scene scene = SceneManager.GetSceneAt(i);
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foreach (GameObject go in scene.GetRootGameObjects())
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{
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AddTerrainMeshRenderer(go, tempMeshRenderers);
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}
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}
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m_allTerrainMeshRenderers = tempMeshRenderers.ToArray();
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if (GaiaGlobal.Instance.SceneProfile.m_terrainCullingEnabled)
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{
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SceneManager.sceneLoaded -= OnSceneLoaded;
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SceneManager.sceneLoaded += OnSceneLoaded;
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SceneManager.sceneUnloaded -= OnSceneUnLoaded;
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SceneManager.sceneUnloaded += OnSceneUnLoaded;
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}
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else
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{
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SceneManager.sceneLoaded -= OnSceneLoaded;
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SceneManager.sceneUnloaded -= OnSceneUnLoaded;
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}
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UpdateCullingDistances();
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}
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private void AddTerrainMeshRenderer(GameObject go, List<MeshRenderer> meshRenderers)
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{
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if (IsSingleMeshTerrain(go))
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{
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MeshRenderer mr = go.GetComponent<MeshRenderer>();
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if (mr != null)
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{
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if (!meshRenderers.Contains(mr) && !m_allTerrainMeshRenderers.Contains(mr))
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{
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meshRenderers.Add(mr);
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}
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}
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return;
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}
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if (IsMeshLODTerrain(go))
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{
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LODGroup lg = go.GetComponent<LODGroup>();
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foreach (LOD lod in lg.GetLODs())
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{
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foreach (Renderer renderer in lod.renderers)
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{
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if (renderer != null && renderer.GetType() == typeof(MeshRenderer))
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{
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MeshRenderer mr = (MeshRenderer)renderer;
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if (!meshRenderers.Contains(mr))
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{
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meshRenderers.Add((MeshRenderer)mr);
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}
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}
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}
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}
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}
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}
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private bool IsSingleMeshTerrain(GameObject go)
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{
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//Two possible things to find here: terrains that have been converted to a single mesh terrain or impostor terrains WITHOUT a LOD Group.
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string searchString = GaiaConstants.MeshTerrainName;
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string searchString2 = GaiaConstants.ImpostorTerrainName;
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if (go.name.StartsWith(searchString) || (go.name.StartsWith(searchString2) && go.GetComponent<LODGroup>() == null))
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{
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return true;
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}
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else
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{
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return false;
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}
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}
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private bool IsMeshLODTerrain(GameObject go)
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{
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//Two possible things to find here: terrains that have been converted to a mesh terrain with a LOD Group, or impostor terrains with a LOD Group.
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string searchString1 = GaiaConstants.MeshTerrainLODGroupPrefix;
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string searchString2 = GaiaConstants.ImpostorTerrainName;
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if (go.name.StartsWith(searchString1) || (go.name.StartsWith(searchString2) && go.GetComponent<LODGroup>()!=null))
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{
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return true;
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}
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else
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{
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return false;
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}
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}
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private void Update()
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{
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if (!Application.isPlaying)
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{
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return;
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}
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if (!GaiaUtils.CheckIfSceneProfileExists())
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{
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return;
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}
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if (!GaiaGlobal.Instance.SceneProfile.m_terrainCullingEnabled || m_camera == null)
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{
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return;
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}
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Vector3 cameraForward = m_camera.transform.forward;
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float cameraViewDistance = m_camera.farClipPlane;
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m_cameraFOV = m_camera.fieldOfView;
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m_FOVCenter = new Vector3(cameraForward.x, cameraForward.z).normalized * cameraViewDistance;
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GeometryUtility.CalculateFrustumPlanes(m_camera, m_planes);
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if (GaiaGlobal.Instance.SceneProfile.m_terrainCullingEnabled)
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{
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for (int i = 0; i < m_allTerrains.Length; i++)
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{
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Terrain terrain = m_allTerrains[i];
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if (terrain == null)
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{
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continue;
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}
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//Check needs to performed in world space, terrain bounds are in local space of the terrain
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m_worldSpaceBounds = terrain.terrainData.bounds;
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m_worldSpaceBounds.center = new Vector3(m_worldSpaceBounds.center.x + terrain.transform.position.x, m_worldSpaceBounds.center.y + terrain.transform.position.y, m_worldSpaceBounds.center.z + terrain.transform.position.z);
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if (GeometryUtility.TestPlanesAABB(m_planes, m_worldSpaceBounds))
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{
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terrain.drawHeightmap = true;
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terrain.drawTreesAndFoliage = true;
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//Deactivate terrain GO entirely
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//terrain.gameObject.SetActive(true);
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//Activate object spawns
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//Transform spawnsTransform = terrain.gameObject.transform.Find(GaiaConstants.defaultGOSpawnTarget);
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//spawnsTransform.gameObject.SetActive(true);
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}
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else
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{
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terrain.drawHeightmap = false;
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terrain.drawTreesAndFoliage = false;
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//Deactivate terrain GO entirely
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//terrain.gameObject.SetActive(false);
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//Deactivate object spawns
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//Transform spawnsTransform = terrain.gameObject.transform.Find(GaiaConstants.defaultGOSpawnTarget);
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//spawnsTransform.gameObject.SetActive(false);
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}
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}
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}
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if (GaiaGlobal.Instance.SceneProfile.m_terrainCullingEnabled)
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{
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for (int i = 0; i < m_allTerrainMeshRenderers.Length; i++)
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{
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MeshRenderer mr = m_allTerrainMeshRenderers[i];
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if (mr != null)
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{
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if (GeometryUtility.TestPlanesAABB(m_planes, mr.bounds))
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{
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mr.enabled = true;
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}
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else
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{
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mr.enabled = false;
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}
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}
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}
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}
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}
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private void OnDestroy()
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{
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SceneManager.sceneLoaded -= OnSceneLoaded;
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SceneManager.sceneUnloaded -= OnSceneUnLoaded;
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}
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private void OnEnable()
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{
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if (!GaiaUtils.CheckIfSceneProfileExists())
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{
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return;
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}
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if (Application.isPlaying)
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{
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UpdateCullingDistances();
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}
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else
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{
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if (GaiaGlobal.Instance.SceneProfile.CullingProfile != null)
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{
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ApplySceneSetup(GaiaGlobal.Instance.SceneProfile.CullingProfile.m_applyToEditorCamera);
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}
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}
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}
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//Terrain Culling
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private void OnSceneUnLoaded(Scene scene)
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{
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Invoke("UpdateTerrains", 0.5f);
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m_allTerrainMeshRenderers = m_allTerrainMeshRenderers.Where(x => x != null).ToArray();
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}
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private void OnSceneLoaded(Scene scene, LoadSceneMode arg1)
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{
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Invoke("UpdateTerrains", 0.5f);
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List<MeshRenderer> tempMeshRenderers = new List<MeshRenderer>();
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foreach (GameObject go in scene.GetRootGameObjects())
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{
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AddTerrainMeshRenderer(go, tempMeshRenderers);
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}
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m_allTerrainMeshRenderers = m_allTerrainMeshRenderers.Concat(tempMeshRenderers).ToArray();
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}
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private void UpdateTerrains()
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{
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m_allTerrains = Terrain.activeTerrains;
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}
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//Camera Culling
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public static void UpdateCullingDistances()
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{
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if (!GaiaUtils.CheckIfSceneProfileExists())
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{
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return;
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}
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if (GaiaGlobal.Instance.SceneProfile.CullingProfile == null)
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{
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return;
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}
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#if GAIA_PRO_PRESENT
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if (ProceduralWorldsGlobalWeather.Instance != null)
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{
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if (ProceduralWorldsGlobalWeather.Instance.CheckIsNight())
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{
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GaiaGlobal.Instance.SceneProfile.m_sunLight = ProceduralWorldsGlobalWeather.Instance.m_moonLight;
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}
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else
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{
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GaiaGlobal.Instance.SceneProfile.m_sunLight = ProceduralWorldsGlobalWeather.Instance.m_sunLight;
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}
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}
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else
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{
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if (GaiaGlobal.Instance.SceneProfile.m_sunLight == null)
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{
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GaiaGlobal.Instance.SceneProfile.m_sunLight = GaiaUtils.GetMainDirectionalLight();
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}
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}
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#else
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if (GaiaGlobal.Instance.SceneProfile.m_sunLight == null)
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{
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GaiaGlobal.Instance.SceneProfile.m_sunLight = GaiaUtils.GetMainDirectionalLight();
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}
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#endif
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//Make sure we have distances
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if (GaiaGlobal.Instance.SceneProfile.CullingProfile.m_layerDistances == null || GaiaGlobal.Instance.SceneProfile.CullingProfile.m_layerDistances.Length != 32)
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{
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return;
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}
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if (GaiaGlobal.Instance.SceneProfile.m_enableLayerCulling)
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{
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//Apply to main camera
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GaiaGlobal.Instance.m_mainCamera.layerCullDistances = GaiaGlobal.Instance.SceneProfile.CullingProfile.m_layerDistances;
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if (GaiaGlobal.Instance.SceneProfile.m_sunLight != null)
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{
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GaiaGlobal.Instance.SceneProfile.m_sunLight.layerShadowCullDistances = GaiaGlobal.Instance.SceneProfile.CullingProfile.m_shadowLayerDistances;
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}
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}
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else
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{
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float[] layerCulls = new float[32];
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for (int i = 0; i < layerCulls.Length; i++)
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{
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layerCulls[i] = 0f;
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}
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//Apply to main camera
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GaiaGlobal.Instance.m_mainCamera.layerCullDistances = layerCulls;
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if (GaiaGlobal.Instance.SceneProfile.m_sunLight != null)
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{
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GaiaGlobal.Instance.SceneProfile.m_sunLight.layerShadowCullDistances = layerCulls;
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}
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}
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}
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public static void ApplySceneSetup(bool active)
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{
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//Apply to editor camera
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#if UNITY_EDITOR
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if (GaiaGlobal.Instance.SceneProfile.m_enableLayerCulling)
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{
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if (active)
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{
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foreach (var sceneCamera in SceneView.GetAllSceneCameras())
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{
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sceneCamera.layerCullDistances = GaiaGlobal.Instance.SceneProfile.CullingProfile.m_layerDistances;
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}
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if (GaiaGlobal.Instance.SceneProfile.m_sunLight != null)
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{
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GaiaGlobal.Instance.SceneProfile.m_sunLight.layerShadowCullDistances = GaiaGlobal.Instance.SceneProfile.CullingProfile.m_shadowLayerDistances;
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}
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}
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else
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{
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foreach (var sceneCamera in SceneView.GetAllSceneCameras())
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{
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float[] layers = new float[32];
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for (int i = 0; i < layers.Length; i++)
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{
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layers[i] = 0f;
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}
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sceneCamera.layerCullDistances = layers;
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}
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if (GaiaGlobal.Instance.SceneProfile.m_sunLight != null)
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{
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float[] layers = new float[32];
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for (int i = 0; i < layers.Length; i++)
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{
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layers[i] = 0f;
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}
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GaiaGlobal.Instance.SceneProfile.m_sunLight.layerShadowCullDistances = layers;
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}
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}
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}
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else
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{
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foreach (var sceneCamera in SceneView.GetAllSceneCameras())
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{
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float[] layers = new float[32];
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for (int i = 0; i < layers.Length; i++)
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{
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layers[i] = 0f;
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}
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sceneCamera.layerCullDistances = layers;
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}
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if (GaiaGlobal.Instance.SceneProfile.m_sunLight != null)
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{
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float[] layers = new float[32];
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for (int i = 0; i < layers.Length; i++)
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{
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layers[i] = 0f;
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}
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GaiaGlobal.Instance.SceneProfile.m_sunLight.layerShadowCullDistances = layers;
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}
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}
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#endif
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}
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//Controller Setup
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/// <summary>
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/// Sets the current controller type
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/// </summary>
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/// <param name="type"></param>
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public static void SetCurrentControllerType(GaiaConstants.EnvironmentControllerType type)
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{
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LocationSystem system = FindObjectOfType<LocationSystem>();
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if (system != null)
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{
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if (system.m_locationProfile != null)
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{
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system.m_locationProfile.m_currentControllerType = type;
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}
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}
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}
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}
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}
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