mirror of https://github.com/nmlgc/ReC98.git
35 lines
568 B
NASM
35 lines
568 B
NASM
public VECTOR2_AT
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vector2_at proc far
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@@angle = word ptr 6
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@@length = word ptr 8
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@@origin_y = word ptr 0Ah
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@@origin_x = word ptr 0Ch
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@@ret = Point ptr 0Eh
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push bp
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mov bp, sp
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push si
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mov si, word ptr [bp+@@ret]
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mov bx, [bp+@@angle]
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if GAME eq 5
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xor bh, bh
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endif
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add bx, bx
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movsx eax, [bp+@@length]
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movsx edx, _CosTable8[bx]
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imul eax, edx
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sar eax, 8
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add ax, [bp+@@origin_x]
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mov [si], ax
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movsx eax, [bp+@@length]
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movsx edx, _SinTable8[bx]
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imul eax, edx
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sar eax, 8
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add ax, [bp+@@origin_y]
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mov [si+2], ax
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pop si
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pop bp
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retf 0Ah
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vector2_at endp
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