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fixed gfx_AllocSprite return value bug #659

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fixed gfx_AllocSprite return value bug #659

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10 changes: 6 additions & 4 deletions src/graphx/graphx.asm
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Original file line number Diff line number Diff line change
Expand Up @@ -388,10 +388,12 @@ gfx_AllocSprite:
inc de ; de = width * height + 2
push de
call _indcallHL ; hl = malloc(width * height + 2)
pop de ; de = width * height + 2
add hl, de ; this should never carry
sbc hl, de ; check if malloc failed (hl == 0)
pop de ; e = width, d = height
pop de
pop de ; e = width, d = height, ude = unknown
; check if malloc failed (hl == 0)
add hl, de
or a, a
sbc hl, de
ret z ; abort if malloc failed
ld (hl), de ; store width and height
ret
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