git.y1.nz

commit fd44443fc6729001640af08679b86627bfa9a9e3
parent c5c3a451ce49dc4b9f36fba0a28e6ade0d422ddb
Author: Michel Iwaniec <46843052+michel-iwaniec@users.noreply.github.com>
Date:   Sun, 10 May 2026 11:55:18 +0100

GB: Add set_win_attribute_xy function (#885)
Diffstat:
M
gbdk-lib/include/gb/gb.h
16
++++++++++++++++

1 file changed, 16 insertions(+), 0 deletions(-)
diff --git a/gbdk-lib/include/gb/gb.h b/gbdk-lib/include/gb/gb.h
@@ -1708,6 +1708,22 @@ void get_win_tiles(uint8_t x, uint8_t y, uint8_t w, uint8_t h, uint8_t *tiles) O
  */
 uint8_t * set_win_tile_xy(uint8_t x, uint8_t y, uint8_t t);
 
+/** Set single attribute data a on window layer at x,y
+    @param x X-coordinate
+    @param y Y-coordinate
+    @param a tile attributes
+    @return returns the address of tile attribute, so you may use faster set_vram_byte() later
+
+    @note On the Game Boy this is only usable in Game Boy Color mode
+*/
+inline uint8_t * set_win_attribute_xy(uint8_t x, uint8_t y, uint8_t a)
+{
+    uint8_t* addr;
+    VBK_REG = VBK_ATTRIBUTES;
+    addr = set_win_tile_xy(x, y, a);
+    VBK_REG = VBK_TILES;
+    return addr;
+}
 
 /**
  * Get single tile t on window layer at x,y

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