mirror of https://github.com/nmlgc/ReC98.git
23 lines
457 B
NASM
23 lines
457 B
NASM
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public BULLET_PATNUM_FOR_ANGLE
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bullet_patnum_for_angle proc near
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@@angle = byte ptr 2
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@@patnum_base = word ptr 4
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mov bx, sp
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mov al, ss:[bx+@@angle]
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mov bx, ss:[bx+@@patnum_base]
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add al, 3
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; Yes, this is intended to also cover Yumeko's knife bullets, which start
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; at patnum 193.
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cmp bx, PAT_BULLET16_V
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jnb short @@is_vector_bullet
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and al, 7Fh
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@@is_vector_bullet:
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xor ah, ah
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shr al, 3
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add ax, bx
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retn 4
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bullet_patnum_for_angle endp
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nop
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