;
; Spiral demo using Turtle graphics
;
; Written in UASM by 0CorErr
; Translated to FASM by dunkaist
;
use32
org 0
db 'MENUET01'
dd 0x01,start,i_end,e_end,e_end,params,0
include 'proc32.inc'
include 'macros.inc'
struct RGB
Blue db ?
Green db ?
Red db ?
ends
struct HSV
Hue dw ?
Sat db ?
Val db ?
ends
struct Turtle
PosX dd ?
PosY dd ?
Orientation dd ?
PenColor HSV
ends
proc forward _t, _d
locals
.x1 dd ?
.x2 dd ?
.y1 dd ?
.y2 dd ?
endl
mov eax, [_t]
fld [eax+Turtle.PosX]
fistp [.x1]
fld [eax+Turtle.PosY]
fistp [.y1]
fld [eax+Turtle.Orientation]
fcos
fmul [_d]
fadd [eax+Turtle.PosX]
fstp [eax+Turtle.PosX]
fld [eax+Turtle.Orientation]
fsin
fmul [_d]
fadd [eax+Turtle.PosY]
fstp [eax+Turtle.PosY]
fld [eax+Turtle.PosX]
fistp [.x2]
fld [eax+Turtle.PosY]
fistp [.y2]
mov ebx, [.x1]
shl ebx, 16
add ebx, [.x2]
mov ecx, [.y1]
shl ecx, 16
add ecx, [.y2]
mov edx, [color]
mcall 38
ret
endp
proc turn _t, _degrees
mov eax, [_t]
fldpi
fmul [_degrees]
fdiv [float_180]
fadd [eax+Turtle.Orientation]
fstp [eax+Turtle.Orientation]
ret
endp
proc reposition _t, _x, _y
mov eax, [_t]
mov ecx, [_x]
mov [eax+Turtle.PosX], ecx
mov ecx, [_y]
mov [eax+Turtle.PosY], ecx
ret
endp
; H = 0..360, S = 0..255, V = 0..255 --> R = 0..255, G = 0..255, B = 0..255
proc hsv_to_rgb uses ebx, _h, _s, _v, _rgb
locals
.f dd ?
.vs dd ?
endl
mov ebx, [_rgb]
cmp [_s], 0
jnz @f
mov eax, [_v]
mov [ebx+RGB.Red], al
mov [ebx+RGB.Green], al
mov [ebx+RGB.Blue], al
jmp .end
@@:
cmp [_h], 360
jnz @f
mov [_h], 0
@@:
mov eax, [_v]
mul [_s]
mov [.vs], eax
mov eax, [_h]
mov ecx, 60
xor edx, edx
div ecx
mov [.f], edx
test eax, eax
jnz @f
mov eax, [_v]
mov [ebx+RGB.Red], al
mov eax, 60
sub eax, [.f]
mul [.vs]
xor edx, edx
div [dword_255_mul_60]
mov edx, [_v]
sub dl, al
mov [ebx+RGB.Green], dl
mov eax, [.vs]
xor edx, edx
div [dword_255]
mov edx, [_v]
sub dl, al
mov [ebx+RGB.Blue], dl
jmp .end
@@:
cmp eax, 1
jnz @f
mov eax, [.vs]
mul [.f]
xor edx, edx
div [dword_255_mul_60]
mov edx, [_v]
sub dl, al
mov [ebx+RGB.Red], dl
mov eax, [_v]
mov [ebx+RGB.Green], al
mov eax, [.vs]
xor edx, edx
div [dword_255]
mov edx, [_v]
sub dl, al
mov [ebx+RGB.Blue], dl
jmp .end
@@:
cmp eax, 2
jnz @f
mov eax, [.vs]
xor edx, edx
div [dword_255]
mov edx, [_v]
sub dl, al
mov [ebx+RGB.Red], dl
mov eax, [_v]
mov [ebx+RGB.Green], al
mov eax, 60
sub eax, [.f]
mul [.vs]
xor edx, edx
div [dword_255_mul_60]
mov edx, [_v]
sub dl, al
mov [ebx+RGB.Blue], dl
jmp .end
@@:
cmp eax, 3
jnz @f
mov eax, [.vs]
xor edx, edx
div [dword_255]
mov edx, [_v]
sub dl, al
mov [ebx+RGB.Red], dl
mov eax, [.vs]
mul [.f]
xor edx, edx
div [dword_255_mul_60]
mov edx, [_v]
sub dl, al
mov [ebx+RGB.Green], dl
mov eax, [_v]
mov [ebx+RGB.Blue], al
jmp .end
@@:
cmp eax, 4
jnz @f
mov eax, 60
sub eax, [.f]
mul [.vs]
xor edx, edx
div [dword_255_mul_60]
mov edx, [_v]
sub dl, al
mov [ebx+RGB.Red], dl
mov eax, [.vs]
xor edx, edx
div [dword_255]
mov edx, [_v]
sub dl, al
mov [ebx+RGB.Green], dl
mov eax, [_v]
mov [ebx+RGB.Blue], al
jmp .end
@@:
cmp eax, 5
jnz @f
mov eax, [_v]
mov [ebx+RGB.Red], al
mov eax, [.vs]
xor edx, edx
div [dword_255]
mov edx, [_v]
sub dl, al
mov [ebx+RGB.Green], dl
mov eax, [.vs]
mul [.f]
xor edx, edx
div [dword_255_mul_60]
mov edx, [_v]
sub dl, al
mov [ebx+RGB.Blue], dl
@@:
.end:
ret
endp
proc hue_shift _t, _n
mov ecx, [_t]
movzx eax, [ecx+Turtle.PenColor.Hue]
add eax, [_n]
xor edx, edx
div [dword_360]
mov [ecx+Turtle.PenColor.Hue], dx
movzx eax, [ecx+Turtle.PenColor.Hue]
movzx edx, [ecx+Turtle.PenColor.Sat]
movzx ecx, [ecx+Turtle.PenColor.Val]
stdcall hsv_to_rgb, eax, edx, ecx, color
ret
endp
proc query_perf
locals
.diff dd ?
endl
mcall 26, 9
sub eax, [frame_start]
mov [.diff], eax
fild [.diff]
fild [freq]
fdivrp
fstp [instant]
mcall 26, 9
mov [frame_start], eax
ret
endp
proc waiting
fld [max_frame_rate]
fld [instant]
fcompp
fstsw ax
sahf
jc @f
inc [sleep_time]
jmp .end
@@:
fld [min_frame_rate]
fld [instant]
fcompp
fstsw ax
sahf
jnc .end
cmp [sleep_time], 0
jz .end
dec [sleep_time]
.end:
mcall 5, [sleep_time]
ret
endp
proc drawing
locals
.i dd ?
.n dd ?
.posx dd ?
.posy dd ?
endl
mov [turtle.Orientation], 0
mov eax, [window_width]
mov ecx, [window_height]
shr eax, 1
shr ecx, 1
mov [.posx], eax
mov [.posy], ecx
fild [.posx]
fstp [.posx]
fild [.posy]
fstp [.posy]
stdcall reposition, turtle, [.posx], [.posy]
mov [.n], 5.0
mov eax, [window_height]
imul eax, 15
shr eax, 4
mov ecx, eax
xor edx, edx
div [dword_360]
neg edx
add edx, ecx
sub edx, 10
mov [.i], edx
@@:
stdcall hue_shift, turtle, 1
stdcall forward, turtle, [.n]
stdcall turn, turtle, 72.5
fld [.n]
fadd [ndelta]
fstp [.n]
dec [.i]
jnz @b
ret
endp
start:
cmp dword[params], '@ss'
setz [screensaver]
mov ebx, EVM_REDRAW + EVM_KEY
cmovz ebx, EVM_REDRAW + EVM_KEY + EVM_MOUSE
mcall 40
mov edi, transparent_cursor
xor eax, eax
mov ecx, 32*32
rep stosd
mcall 37, 4, transparent_cursor, 2
mov ecx, eax
mcall 37, 5
mcall 14
add eax, 0x00010001
movzx ecx, ax
shr eax, 16
mov [window_width], eax
mov [window_height], ecx
mcall 26, 9
mov [frame_start], eax
.still:
mcall 11
dec eax
js .draw_spiral ; no event
jnz .quit
mcall 12, 1
mcall 0, [window_width], [window_height], 0, 0x01000000
mcall 12, 2
.draw_spiral:
cmp [screensaver], 0
jz @f
mcall 9, proc_info, -1
cmp [proc_info.window_stack_position], ax
jnz .quit
@@:
stdcall query_perf
stdcall drawing
stdcall waiting
jmp .still
.quit:
cmp [screensaver], 0
jz @f
mcall 70, f70
@@:
mcall -1
align 4
dword_255_mul_60 dd 255 * 60
dword_255 dd 255
dword_360 dd 360
float_180 dd 180.0
ndelta dd 0.6 ; used in drawing Proc: n = n + ndelta
max_frame_rate dd 15.0 ; to keep the FrameRate
min_frame_rate dd 8.0 ; around min_frame_rate..max_frame_rate FPS
freq dd 100 ; GetTickCount return count of 1/100s of second
instant dd 0.0
sleep_time dd 0
turtle Turtle 0.0, 0.0, 0.0, <180, 255, 255>
f70: ; run
dd 7, 0, 0, 0, 0
db '/sys/@ss',0
i_end:
align 4
window_width dd ?
window_height dd ?
frame_start dd ?
color dd ?
proc_info process_information
params rb 0x400
transparent_cursor rd 32*32
screensaver db ?
align 4
rb 0x200
e_end: