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