void Update()
{
Vector3 centerPos = Vector3.zero;
bool bPosValid = false;
if (Camera.main)
{
centerPos = Camera.main.transform.position;
bPosValid = true;
}
#if QINSHI
if (CameraManager.Instance.controller.GetFollowTargetObject() != null)
{
centerPos = CameraManager.Instance.controller.GetFollowTargetObject().transform.position;
bPosValid = true;
}
#endif
if (bPosValid)
{
int currentX = GetGridStartIndex(centerPos.x);
int currentY = GetGridStartIndex(centerPos.z);//摄像机当前所处的格子
rollMap.RollTo(currentX, currentY);
if (taskList.Count > 0)
{
int nearestIndex = GetNearestTaskIndex(centerPos, taskList);
TerrainGrassTile tile = taskList[nearestIndex];
taskList.RemoveAt(nearestIndex);
float top = 0;
float bottom = 10000;
tile.gameObject.SetActive(true);
for (int i = 0; i < tile.grassList.Count; i++)
{
TerrainGrass grass = tile.grassList[i];
bool hasMesh = grass.CreateMesh();
if (hasMesh)
{
grass.gameObject.SetActive(true);
top = Mathf.Max(grass.top, top);
bottom = Mathf.Min(grass.bottom, bottom);
}
}
tile.UpdateBox(top, bottom);
//正在生成时，慢慢的修改可视距离，减小跳动
for (int i = 0; i < materials.Length; i++)
{
materials[i].SetFloat("_ViewDistance", (tile.Center - centerPos).magnitude - PatchSize / 2.0f);
}
}
}
Shader.SetGlobalFloat("_GrassTime", Time.time);
#if UNITY_EDITOR
UpdateGrassShaderParams();
#endif
}
