--- /dev/null
+#ifndef INCLUDE_CAVE_PARSE_H
+#define INCLUDE_CAVE_PARSE_H
+
+typedef struct
+{
+ unsigned char block;
+ unsigned char data;
+ unsigned char light:4;
+ unsigned char skylight:4;
+} raw_block;
+
+// this is the old fully-decoded chunk
+typedef struct
+{
+ int xpos, zpos, max_y;
+ int height[16][16];
+ raw_block rb[16][16][256]; // [z][x][y] which becomes [y][x][z] in stb
+} chunk;
+
+chunk *get_decoded_chunk(int chunk_x, int chunk_z);
+
+#define NUM_SEGMENTS 16
+typedef struct
+{
+ int max_y, xpos, zpos;
+
+ unsigned char *blockdata[NUM_SEGMENTS];
+ unsigned char *data[NUM_SEGMENTS];
+ unsigned char *skylight[NUM_SEGMENTS];
+ unsigned char *light[NUM_SEGMENTS];
+
+ void *pointer_to_free;
+
+ int refcount; // this allows multi-threaded building without wrapping in ANOTHER struct
+} fast_chunk;
+
+fast_chunk *get_decoded_fastchunk(int chunk_x, int chunk_z); // cache, never call free()
+
+fast_chunk *get_decoded_fastchunk_uncached(int chunk_x, int chunk_z);
+
+#endif