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BLUE.ASM
319 lines (260 loc) · 7.97 KB
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BLUE.ASM
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; Allocate memory for sinetable
; mov eax,m1
; call getmem ; Alloc mem
; jc quitnow
; mov sintab,eax
; add eax,sinetab_length
; mov costab,eax
; call generate_taylor_sinetab
; call WobblePicPart
; call FlagPart
; cmp DebugFlag,0
; jnz quitnow
;keywt: in al,60h
; cmp al,1
; jnz keywt
;-------------------------------------------------------------------------------
;.oO0Oo.oO0Oo.oO0Oo.oO0Oo.oO0Oo.oO0Oo.oO0Oo.oO0Oo.oO0Oo.oO0Oo.oO0Oo.oO0Oo.oO0Oo.
; -+*+- Wobble Pic Part -+*+-
;.oO0Oo.oO0Oo.oO0Oo.oO0Oo.oO0Oo.oO0Oo.oO0Oo.oO0Oo.oO0Oo.oO0Oo.oO0Oo.oO0Oo.oO0Oo.
;-------------------------------------------------------------------------------
WobblePicPart proc near
pushad
mov ecx,32
PaletteLoop2_2:
push ecx
lea edi,logo5+224*3
lea esi,TmpPal
mov ecx,32*3
DecLoop_2:
mov al,byte ptr [esi]
cmp al,byte ptr [edi]
jae NoZero_2
inc byte ptr [esi]
NoZero_2:
inc esi
inc edi
loop DecLoop_2
lea esi,TmpPal
mov dx,3c8h
mov al,224
out dx,al
inc dx
mov ecx,32*3
paletteloop3_2:
nop
nop
outsb
loop paletteloop3_2
call sync
pop ecx
loop PaletteLoop2_2
; Alloc mem for sin+costable
mov eax,sinetab_length2*5
call GetMem
jc AMS_Errorhandler
mov SinTab2,eax
call generate_taylor_sinetab2
; And alloc memory for TempScr
mov eax,m2
call getmem
jc ams_errorhandler
add eax,160 ; One empty line at top
mov TempScr,eax
; Alloc TempScr3
mov eax,m4
call getmem
jc ams_errorhandler
add eax,160 ; One empty line at top
mov TempScr3,eax
; Just wobble it!
@@wobble:
call WobblePic
inc WobbleCounter
cmp WobbleCounter,200
jnz @@not150
add YwobbleSpeed1,1*4
@@not150:
cmp WobbleCounter,210
jnz @@not160
add YwobbleSpeed1,2*4
@@not160:
cmp WobbleCounter,220
jnz @@not170
add YwobbleSpeed1,2*4
@@not170:
cmp WobbleCounter,230
jnz @@not180
add YwobbleSpeed1,2*4
@@not180:
@@noupdate:
cmp DebugFlag,0
jnz @@ut
cmp WobbleCounter,1940
jz @@ut
in al,60h
cmp al,1
jnz @@wobble
@@ut:
popad
ret
endp
WobbleCounter dd 0
;-------------------------------------------------------------------------------
; -+*+- Wobble Picture -+*+-
;-------------------------------------------------------------------------------
; Wobble in Screen X and Screen Y
Xwobbleptr dd 0
Ywobbleptr dd 0
; Wobble in Z for both different X and Y positions
ZXwobbleptr dd 0
ZYwobbleptr dd 0
; Speeds
ZXwobbleSpeed1 dd 9*4 ; 9*4
ZXwobbleSpeed2 dd 7*4 ;11*4
YwobbleSpeed1 dd 0*4 ;15*4
YwobbleSpeed2 dd 19*4 ;21*4
ZYwobbleSpeed1 dd 2*4 ;15*4
ZYwobbleSpeed2 dd 1*4 ;17*4
WobblePic proc near
pushad
mov esi,ScreenPic ; Get pointer to picture
mov edi,TempScr
mov ebp,Sintab2 ; Point at sinetable
add esi,(320*40)
;* Do ZX wobble *
mov eax,ZXwobbleptr
mov ebx,ZXwobbleSpeed1
add ZXwobbleptr,ebx
and ZXwobbleptr,16383
xor ebx,ebx ; Picture offset ptr
mov ecx,160 ; Half screen only
@@nxtZX:
push ecx
add ebx,[ebp+eax] ; Add sinus to offsetptr
mov edx,ebx
sar edx,16
push esi
push edi
add esi,edx ; Add X offset
mov ecx,100 ; Height of display field
@@doY: mov dl,[esi] ; Get pixel
mov [edi],dl ; Set pixel
add esi,320
add edi,160
loop @@doY
pop edi
pop esi
; Increase the sinus ptr
add eax,ZXwobbleSpeed2
and eax,16383
inc edi ; Next screen coord
pop ecx
loop @@nxtZX
;* Do ZY wobble *
mov edi,TempScr3
add edi,160
mov esi,TempScr
mov eax,ZYwobbleptr
mov ebx,ZYwobbleSpeed1
add ZYwobbleptr,ebx
and ZYwobbleptr,16383
xor ebx,ebx ; Picture offset ptr
mov ecx,100 ; Half screen only
@@nxtZY:
push ecx
add ebx,[ebp+eax] ; Add sinus to offsetptr
mov ecx,ebx
sar ecx,16
and ecx,127
; imul ecx,160 ; *** Optimize later! ***
shl ecx,6
lea ecx,[ecx+ecx*4]
sar ecx,1
push esi
add esi,ecx ; Add X offset
mov ecx,160/4 ; Width of display field
@@doX:
rep movsd
pop esi
; Increase the sinus ptr
add eax,ZYwobbleSpeed2
and eax,16383
pop ecx
loop @@nxtZY
;* Do X wobble *
mov edi,TempScr
mov esi,TempScr3
mov eax,Ywobbleptr
mov ebx,YwobbleSpeed1
add Ywobbleptr,ebx
and Ywobbleptr,16383
xor ebx,ebx ; Picture offset ptr
xor edx,edx
mov ecx,100 ; Half screen only
@@nxtY:
push ecx
add ebx,[ebp+eax] ; Add sinus to offsetptr
mov edx,ebx
sar edx,16
jns @@ok
neg edx
@@ok:
push esi
add esi,edx ; Add X offset
mov ecx,160/4 ; Width of display field
rep movsd
pop esi
; Increase the sinus ptr
add eax,YwobbleSpeed2
and eax,16383
add esi,160
pop ecx
loop @@nxtY
;* Make four spiffy copies of the tempscr on the real screen *
mov esi,TempScr
move edi,0a0000h
mov ebp,(199*320)+319
mov edx,199*320 ; Lower offset
mov ecx,WobbleHeight
@@nxtrow:
push ecx
mov ebx,319 ; Right offset
mov ecx,160
@@copypixel:
mov al,[esi] ; Get pixel
mov [edi],al ; Set upper left
mov [edi+ebx],al ; Set upper right
mov [edi+edx],al
mov [edi+ebp],al
inc esi
inc edi
sub ebx,2
sub ebp,2
loop @@copypixel
sub ebp,160*2
add edi,160 ; Step to next row
sub edx,2*320
pop ecx
loop @@nxtrow
cmp wobbleheight,100
jz @@noadd
inc WobbleHeight
@@noadd:
popad
ret
endp
WobbleHeight dd 1
;-------------------------------------------------------------------------------
; -+*+- Variables and such shit -+*+-
;-------------------------------------------------------------------------------
; Allocations
M1=sinetab_length*5 ; For sine tables
M2=160*102 ; For Tempscr (2 additional empty lines at top+bottom)
M3=320*200 ; For Tempscr 2
M4=160*102 ; For TempScr3
TempScr dd 0
TempScr2 dd 0
TempScr3 dd 0
; Some flags
NoClear db 0