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authorRangi <remy.oukaour+rangi42@gmail.com>2020-10-26 22:24:38 -0400
committerRangi <remy.oukaour+rangi42@gmail.com>2020-10-26 22:24:38 -0400
commitc85ba78b778a0e35c2fe7f97ed4e8fee1b3c7036 (patch)
treef3d25ab52cbb2d1e92c89e1ad976dcb929c05768 /macros/gfx.asm
parent9dcdad5e60fbc10ba81ae127743c78a6b00d3dd5 (diff)
Use more assertions to ensure correct code and data
Diffstat (limited to 'macros/gfx.asm')
-rw-r--r--macros/gfx.asm8
1 files changed, 8 insertions, 0 deletions
diff --git a/macros/gfx.asm b/macros/gfx.asm
index 2c67cfc8a..b42b1440b 100644
--- a/macros/gfx.asm
+++ b/macros/gfx.asm
@@ -1,5 +1,13 @@
+assert_valid_rgb: MACRO
+rept _NARG
+ assert 0 <= (\1) && (\1) <= 31, "RGB channel must be 0-31"
+ shift
+endr
+ENDM
+
RGB: MACRO
rept _NARG / 3
+ assert_valid_rgb \1, \2, \3
dw palred (\1) + palgreen (\2) + palblue (\3)
shift 3
endr