A brief history of Tamriel Rebuilt
The quadtree is the two-dimensional case of a broader family of space-partitioning data structures. Octrees extend the same idea to three dimensions (splitting cubes into eight children), KD-trees use alternating axis-aligned splits (splitting along x, then y, then x again), and R-trees group nearby objects into bounding rectangles. Each variant makes different tradeoffs between construction time, query speed, and update cost.
,更多细节参见搜狗输入法下载
void *alloc(int classno) {
Decreasing bandwidth usage with GZIP compression