1 files changed, 33 insertions, 0 deletions
diff --git a/include/pipe.h b/include/pipe.h
new file mode 100644
index 0000000..2602614
--- /dev/null
+++ b/include/pipe.h
@@ -0,0 +1,33 @@
+#pragma once
+#include <gb/gb.h>
+#include <stdbool.h>
+
+#include "defines.h"
+
+enum SPECIAL_SPRITES {
+  PIPE_TILE_TOP_LEFT,
+  PIPE_TILE_TOP_MIDDLE,
+  PIPE_TILE_TOP_RIGHT,
+  PIPE_TILE_BOTTOM_LEFT,
+  PIPE_TILE_BOTTOM_MIDDLE,
+  PIPE_TILE_BOTTOM_RIGHT,
+};
+
+enum PIPE_TILES {
+  CAP_LEFT,
+  CAP_MIDDLE,
+  MAIN_LEFT,
+  MAIN_MIDDLE,
+};
+
+typedef struct Pipe {
+  UINT8 x;
+  UINT8 height_of_gap;
+  UINT8 gap_skip;
+  UINT8 sprite_ids[36]; // 15 high, minus 3 tile gap, times 3 wide = 36
+} Pipe;
+
+inline void pipe_init(Pipe *pipe);
+inline void pipe_scroll_horizontal(Pipe *pipe, ScreenCoordinate x);
+inline void pipe_move_gap_height(Pipe *pipe, UINT8 gap_height);
+inline void pipe_hide(Pipe *pipe);