Add chunking

1 files changed, 22 insertions, 4 deletions

diff --git a/include/worldgen.h b/include/worldgen.h
index 4cac9bf..9095906 100644
--- a/include/worldgen.h
+++ b/include/worldgen.h
@@ -6,16 +6,34 @@ extern "C" {
 
 #include <daw/types.h>
 
-// first 4 bits for material type
+// amounts to 32768 blocks per chunk
+#define CHUNK_WIDTH  16
+#define CHUNK_LENGTH 16
+#define CHUNK_HEIGHT 128
+#define CHUNK_SIZE   (CHUNK_WIDTH * CHUNK_LENGTH * CHUNK_HEIGHT)
+
+
+
+// World size is defined in terms of number of chunks. Chunks are not stacked
+// vertically
+#define WORLD_WIDTH  4
+#define WORLD_LENGTH 4
+#define WORLD_SIZE   (WORLD_LENGTH * WORLD_WIDTH)
+
+
+// first 4 bits for material type, 16 types in total
 #define BLOCK_none    0
 #define BLOCK_grass   1
 #define BLOCK_rock    2
 
 // next 4 bits for shape type
-#define SHAPE_filled (1 << 4)
-#define SHAPE_slope  (2 << 4)
+#define SHAPE_none        (0 << 4)
+#define SHAPE_slope_north (1 << 4)
+#define SHAPE_slope_east  (2 << 4)
+#define SHAPE_slope_south (3 << 4)
+#define SHAPE_slope_west  (4 << 4)
 
-void gen_terrain(u8 *world, usize height, usize length, usize width);
+void gen_terrain(u8 *world);
 
 
 #ifdef __cplusplus