private bool TryToRenderChunk(Vector2Int _topTile, int _chunkSize, int _chunkIndex)
{
#if UNITY_EDITOR
mFinishTryRenderChunkNum++;
if (mFinishTryRenderChunkNum > mMaxMayRenderChunkNum)
{
UnityEditor.EditorUtility.DisplayProgressBar("Render Layer " + mLayerMeta.layerName,
string.Format("Please wait.... [{1}] {0}", mFinishTryRenderChunkNum, _chunkIndex), 1f);
}
else
{
UnityEditor.EditorUtility.DisplayProgressBar("Render Layer " + mLayerMeta.layerName,
string.Format("Please wait.... [{2}] {0}/{1}", mFinishTryRenderChunkNum, mMaxMayRenderChunkNum, _chunkIndex),
(float)mFinishTryRenderChunkNum / mMaxMayRenderChunkNum);
}
#endif
var renderTileList = new List <ITU_RenderTileData>();
var lineFistTile = _topTile;
var lineTileNum = 1;
for (var i = 0; i < _chunkSize; i++)
{
TryToPushLineRenderTileData(lineFistTile, lineTileNum, renderTileList);
ITU_MathUtils.GetNowTileLeftBottomTileWithStep(lineFistTile.x, lineFistTile.y, 1, mMapMeta.IsIsoStaggered(), out lineFistTile);
lineTileNum++;
}
//For循环最后一次时候向左下移动了一格,所以进入底部渲染时候需要先向右侧移动一格
ITU_MathUtils.GetNowTileRightTileWithStep(lineFistTile.x, lineFistTile.y, 1, mMapMeta.IsIsoStaggered(), out lineFistTile);
lineTileNum = _chunkSize - 1;
for (var i = 0; i < _chunkSize - 1; i++)
{
TryToPushLineRenderTileData(lineFistTile, lineTileNum, renderTileList);
ITU_MathUtils.GetNowTileRightBottomTileWithStep(lineFistTile.x, lineFistTile.y, 1, mMapMeta.IsIsoStaggered(), out lineFistTile);
lineTileNum--;
}
if (renderTileList.Count <= 0)
{
return(false);
}
var chunkGo = new GameObject("Chunk_" + _chunkIndex);
chunkGo.transform.parent = mLayerRootGo.transform;
chunkGo.transform.localPosition = Vector3.zero;
DoRenderChunk(chunkGo, renderTileList);
return(true);
}
private void DoRenderLayer()
{
//以最小点向左上移动两个Chunk大小区域为起点,逐行扫描每个Chunk,直到Chunk的TopTile 大于MaxTile为止
//这样进行Chunk渲染保证了正确的渲染顺序,右压左,下压上.(每个Chunk之内的Tile渲染也需要按此顺序)
var tileWidthInUnit = (float)mMapMeta.tileWidthInPixel / mRenderSetting.pixelsPreUnit;
var tileHeightInUnit = (float)mMapMeta.tileHeightInPixel / mRenderSetting.pixelsPreUnit;
var chunkIndex = 0;
var renderStep = mRenderSetting.renderChunkSize;
var isStaggered = mMapMeta.IsIsoStaggered();
Vector2Int startPos;
ITU_MathUtils.World2Tile(mLeftTopCornerBound.x, mLeftTopCornerBound.y, tileWidthInUnit, tileHeightInUnit, mMapMeta.IsIsoStaggered(), out startPos);
//IsometricMathUtils.GetNowTileLeftTopTileWithStep(startPos.x, startPos.y, renderStep * 2, isStaggered, out startPos);
var isTurnLeft = true;
var lineFistTile = startPos;
var nowPointTile = lineFistTile;
while (true)
{
//渲染一行
while (true)
{
//nowPointTile默认指向的是当前渲染Chunk的TopTile
//此Tile向左下方移动chunkSize大小则为当前Chunk的最左侧Tile
Vector2Int chunkMinLeftTile;
ITU_MathUtils.GetNowTileLeftBottomTileWithStep(nowPointTile.x, nowPointTile.y, renderStep, isStaggered, out chunkMinLeftTile);
Vector2 chunkCheckPos;
ITU_MathUtils.TileTopCorner2World(chunkMinLeftTile.x, chunkMinLeftTile.y, tileWidthInUnit, tileHeightInUnit, isStaggered, out chunkCheckPos);
//应该是上角点减去 tileWidthInUnit/2即可.此处只是为了容错.
if (chunkCheckPos.x - tileWidthInUnit > mRightBottomCornerBound.x)
{
break;
}
var isDrawChunk = TryToRenderChunk(nowPointTile, mRenderSetting.renderChunkSize, chunkIndex);
chunkIndex = isDrawChunk ? chunkIndex + 1 : chunkIndex;
ITU_MathUtils.GetNowTileRightTileWithStep(nowPointTile.x, nowPointTile.y, renderStep, isStaggered, out nowPointTile);
}
//移动到下一行
if (isTurnLeft)
{
ITU_MathUtils.GetNowTileLeftBottomTileWithStep(lineFistTile.x, lineFistTile.y, renderStep, isStaggered, out lineFistTile);
}
else
{
ITU_MathUtils.GetNowTileRightBottomTileWithStep(lineFistTile.x, lineFistTile.y, renderStep, isStaggered, out lineFistTile);
}
nowPointTile = lineFistTile;
isTurnLeft = !isTurnLeft;
Vector2 bottomCheckPos;
ITU_MathUtils.TileTopCorner2World(nowPointTile.x, nowPointTile.y, tileWidthInUnit, tileHeightInUnit, isStaggered, out bottomCheckPos);
//Unity坐标是反向的,所以要反向检测
if (bottomCheckPos.y < mRightBottomCornerBound.y)
{
break;
}
}
}