IEnumerator AddTerrainCoroutine(int col, int row)
{
mTerrainNum++;
GetTerrainName(col, row);
#if LOAD_ADDITIVE_ASYNC
TerrainIndex tr = new TerrainIndex();
tr.col = col;
tr.row = row;
sTerrainRecords.Add(tr);
TerrainAttachment ta = new TerrainAttachment();
ta.attachments = new List <GameObject>(4);
mTerrainAttachments.Add(ta);
lock ( sTerrainTasks )
{
TerrainTask tt = new TerrainTask();
tt.col = col;
tt.row = row;
tt.terrainName = terrainName.ToString();
sTerrainTasks.Add(tt);
}
AsyncOperation async = Application.LoadLevelAdditiveAsync(sceneName.ToString());
yield return(async);
#else
float z = (col > 0 ? col - 1 : col) * TILE_SIZE;
float x = -(row < 0 ? row + 1 : row) * TILE_SIZE;
// for memory limitation, don't cache anything.
Object t = Resources.Load(terrainName.ToString()); // the prefab has been deleted from project by me, so it won't work here.
TerrainRecord tr = new TerrainRecord();
tr.col = col;
tr.row = row;
sTerrainRecords.Add(tr);
TerrainAttachment ta = new TerrainAttachment();
yield return(ta.terrain = Instantiate(t, new Vector3(x, 0, z), Quaternion.identity));
ta.attachments = new List <GameObject>(4);
t = null;
mTerrainAttachments.Add(ta);
#endif
}
// Use this for initialization
void Start()
{
Camera camera = Camera.main;
mHalfFOV = camera.fieldOfView * 0.5f; // half
mHalfHorizontalFOV = mHalfFOV * camera.aspect;
mHalfHorizontalFOV = Mathf.Deg2Rad * mHalfHorizontalFOV;
mCameraMinForward = Vector3.Angle(camera.transform.forward, -Vector3.up);
mCameraMinForward -= mHalfFOV;
mCameraMinForward = Mathf.Deg2Rad * mCameraMinForward;
mCameraMaxForward = mCameraMinForward + Mathf.Deg2Rad * camera.fieldOfView;
sTerrainRecords = ArrayList.Synchronized(new ArrayList());
UpdateCameraTile();
sTerrainRecords.Add(new TerrainIndex(mCameraCol, mCameraRow));
mTerrainAttachments = new List <TerrainAttachment>();
TerrainAttachment ta = new TerrainAttachment();
ta.terrain = UnityEngine.GameObject.Find("Terrain_original");
ta.attachments = new List <UnityEngine.GameObject>();
mTerrainAttachments.Add(ta);
}
// Update is called once per frame
void Update()
{
UpdateCameraTile();
Vector3 cameraPosition = GetComponent <Camera>().transform.position;
float viewHeight1 = cameraPosition.y * Mathf.Tan(mCameraMinForward); // the top edge
float viewHeight2 = cameraPosition.y * Mathf.Tan(mCameraMaxForward); // the bottom edge
float viewWidth = cameraPosition.y / Mathf.Cos(mCameraMaxForward) * Mathf.Tan(mHalfHorizontalFOV);
float viewHeightCompensator1 = 512.0f; // the compensator for the top edge
float viewHeightCompensator2 = 512.0f; // the compensator for the bottom edge
float viewWidthCompensator = 512.0f; // the compensator for width
sTopSide = cameraPosition.x - viewHeight2 - viewHeightCompensator2 - TILE_SIZE;
sBottomSide = cameraPosition.x - viewHeight1 + viewHeightCompensator1 + TILE_SIZE;
sLeftSide = cameraPosition.z - viewWidth - viewWidthCompensator - TILE_SIZE;
sRightSide = cameraPosition.z + viewWidth + viewWidthCompensator + TILE_SIZE;
/*//(column, row)//
*
* -1, 1 | 1, 1
|
| -----------------
|
| -1, -1 | 1, -1
|
| //////////////////*/
TerrainIndex leftTopTile = GetTileInfo(cameraPosition.x - viewHeight2 - viewHeightCompensator2, cameraPosition.z - viewWidth - viewWidthCompensator);
TerrainIndex rightTopTile = GetTileInfo(cameraPosition.x - viewHeight2 - viewHeightCompensator2, cameraPosition.z + viewWidth + viewWidthCompensator);
TerrainIndex leftBottomTile = GetTileInfo(cameraPosition.x - viewHeight1 + viewHeightCompensator1, cameraPosition.z - viewWidth - viewWidthCompensator);
for (int row = leftTopTile.row; row >= leftBottomTile.row; row--)
{
if (row == 0)
{
continue;
}
bool isBreak = false;
for (int col = leftTopTile.col; col <= rightTopTile.col; col++)
{
if (col == 0)
{
continue;
}
if (!IsExistInScene(col, row))
{
mTerrainNum++;
GetTerrainName(col, row);
float z = (col > 0 ? col - 1 : col) * TILE_SIZE;
float x = -(row < 0 ? row + 1 : row) * TILE_SIZE;
// for memory limitation, don't cache anything.
UnityEngine.Object t = Resources.Load("Prefabs/Maps/Simple/" + terrainName.ToString());
TerrainIndex tr = new TerrainIndex();
tr.col = col;
tr.row = row;
sTerrainRecords.Add(tr);
TerrainAttachment ta = new TerrainAttachment();
ta.attachments = new List <UnityEngine.GameObject>(4);
ta.terrain = t as UnityEngine.GameObject;
UnityEngine.GameObject s = (UnityEngine.GameObject)Instantiate(t, new Vector3(x, 0, z), Quaternion.identity);
t = null;
isBreak = true;
}
}
if (isBreak)
{
// add more tiles next frame
break;
}
}
}
