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game.asm
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game.asm
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[org 0x0100]
jmp start
start_game: db 0
inst: db 'PRESS I TO GO INTO INSTRUCTION BOX'
oldisr: dd 0
colume: dw 0
row: dw 0
incC: db 0
incR: db 0
previous: dw 0
tickcount: db 0
left_edge: dw 3524
right_edge dw 3652
right_: dw 0
left_: dw 0
pre_stack_pos: dw 3580
second: dw 0
minute: db 0
clock: db 0
bonus: dw 0
bricks_start_location: dw 810 , 828 , 846 , 864 , 882 , 900 , 918 , 936 , 1290 , 1308 , 1326 , 1344 , 1362, 1380, 1398 , 1416 , 1770 , 1788 , 1806 , 1824 , 1842 , 1860 , 1878 , 1896
bricks_end_location: dw 822 , 840 , 858 , 876 , 894 , 912 , 930 , 948 , 1302 , 1320 , 1338 , 1356 , 1374 , 1392 , 1414 , 1428 , 1782 , 1800 , 1818 , 1836 ,1854 , 1872 , 1890 , 1908
score: dw 0
total_bricks: dw 24
calculated_location: dw 0
left_limit dw 0
right_limit dw 0
mid dw 0
left_or_right: db 0
preBall:dw 0
live: db 3
end_of_game: dw 0
StayOnStacker: db 0
counter: dw 0
solid: db 0
solid1: db 0
Lose_str: db 'YOU_LOSE'
Score_str: db 'SCORE'
Lives_str: db 'LIVES'
welcome_str: db 'WELCOME TO BRICK BREAKER'
option_str: db 'PLEASE SELECT OPTIONS'
instructions_str: db 'INSTRUCTION'
play_str: db 'PRESS ENTER TO PLAY GAME'
ttl_live_str: db 'YOUR TOTAL LIVES ARE 3'
bonus_note_str: db 'BONUS AWARDED IF BREAK ALL BRICKS IN 2 MINS'
solid_base_str: db 'HITTING RED BRICK WILL SOLIDIFY YOUR BASE'
space_bar: db 'PRESS SPACE BAR TO RELEASE BALL'
total_score_str: db 'YOUR TOTAL SCORES :'
lives_remain_str: db 'LIVES REMAINING'
exit_str: db 'PRESS E TO EXIT'
quit_str: db 'PRESS ENTER+Q TO QUIT GAME'
restart_str: db 'PRESS ENTER+R TO RESTART YOUR GAME'
left_arrow: db 'USE RIGHT & LEFT ARROW TO MOVE BAR'
sound:
push ax
push bx
mov al,182
out 43h,al
mov ax, 4560
out 42h,al
mov al,ah
out 42h,al
in al,61h
or al,00000011
out 61h,al
mov bx,2
pre:
mov cx,65535
pre1:
dec cx
jne pre1
dec bx
jne pre
in al,61h
and AL,11111100b
out 61h,al
pop bx
pop ax
ret
start_menu:
push ax
call clrscr
mov ax , 690 ; row 6 col 25
push ax
mov ax ,welcome_str
push ax
mov ax , 24
push ax
call printstr_B
mov ax , 1010
push ax
mov ax , option_str
push ax
mov ax , 21
push ax
call printstr
mov ax , 1330
push ax
mov ax , play_str
push ax
mov ax , 24
push ax
call printstr
mov ax , 1650
push ax
mov ax , inst
push ax
mov ax , 35
push ax
call printstr
pop ax
ret
printnum:
push bp
mov bp, sp
push es
push ax
push bx
push cx
push dx
push di
mov ax, 0xb800
mov es, ax ; point es to video base
mov ax, [bp+4] ; load number in ax
mov bx, 10 ; use base 10 for division
mov cx, 0 ; initialize count of digits
nextdigit: mov dx, 0 ; zero upper half of dividend
div bx ; divide by 10
add dl, 0x30 ; convert digit into ascii value
push dx ; save ascii value on stack
inc cx ; increment count of values
cmp ax, 0 ; is the quotient zero
jnz nextdigit ; if no divide it again
mov di, [bp+6] ; point di to 70th column
nextpos: pop dx ; remove a digit from the stack
mov dh, 0x07 ; use normal attribute
mov [es:di], dx ; print char on screen
add di, 2 ; move to next screen location
loop nextpos ; repeat for all digits on stack
pop di
pop dx
pop cx
pop bx
pop ax
pop es
pop bp
ret 4
; youLose:
; push ax
; ;call clrscr
; mov ax , 1990
; push ax
; mov ax , Lose_str
; push ax
; mov ax , 8
; push ax
; call printstr
; ;jmp endgame
; pop ax
; ret
callmee
mov ax , 1990
push ax
mov ax , Lose_str
push ax
mov ax , 8
push ax
call printstr
jmp callmee
pop ax
ret
printstr:
push bp
mov bp, sp
push es
push ax
push cx
push si
push di
mov ax, 0xb800
mov es, ax ; point es to video base
mov di, [bp+8] ; point di to top left column
mov si, [bp+6] ; point si to string
mov cx, [bp+4] ; load length of string in cx
mov ah, 0x07 ; normal attribute fixed in al
nextchar:
mov al, [si] ; load next char of string
mov [es:di], ax ; show this char on screen
add di, 2 ; move to next screen location
add si, 1 ; move to next char in string
loop nextchar ; repeat the operation cx times
pop di
pop si
pop cx
pop ax
pop es
pop bp
ret 6
printstr_B:
push bp
mov bp, sp
push es
push ax
push cx
push si
push di
mov ax, 0xb800
mov es, ax ; point es to video base
mov di, [bp+8] ; point di to top left column
mov si, [bp+6] ; point si to string
mov cx, [bp+4] ; load length of string in cx
mov ah, 0x8e ; normal attribute fixed in al
nextchar1:
mov al, [si] ; load next char of string
mov [es:di], ax ; show this char on screen
add di, 2 ; move to next screen location
add si, 1 ; move to next char in string
loop nextchar1 ; repeat the operation cx times
pop di
pop si
pop cx
pop ax
pop es
pop bp
ret 6
time_str: db 'TIME '
printStrings:
push ax
mov ax , 280
push ax
mov ax , Lives_str
push ax
mov ax , 5
push ax
call printstr_B
mov ax , 162
push ax
mov ax , Score_str
push ax
mov ax , 5
push ax
call printstr_B
mov ax , 390
push ax
mov ax , time_str
push ax
mov ax , 5
push ax
call printstr_B
pop ax
ret
clrscr:
push es
push ax
push cx
push di
mov ax, 0xb800
mov es, ax ; point es to video base
xor di, di ; point di to top left column
mov ax, 0x0720 ; space char in normal attribute
mov cx, 2000 ; number of screen locations
cld ; auto increment mode
rep stosw ; clear the whole screen
pop di
pop cx
pop ax
pop es
ret
boader:
push ax
push es
push di
mov ax,0xb800
mov es,ax
mov ah,0x60
mov al,0x20
mov di,482
l1:
mov word[es:di],ax
add di,2
cmp di,636
jne l1
cmp byte[cs:solid],1
jne nnp
mov ah,0x40
jmp npp
nnp:
mov ah,0x60
npp:
mov di,3682
l2:
mov word[es:di],ax
add di,2
cmp di,3836
jne l2
mov ah,0x60
mov al,0x20
mov di,482
l3:
mov word[es:di],ax
add di,160
cmp di,3842
jne l3
mov di,636
l4:
mov word[es:di],ax
add di,160
cmp di,3996
jne l4
pop di
pop es
pop ax
ret
brick_remove:
push es
push ax
push dx
push cx
push si
push bx
mov ax,0xb800
mov es,ax
mov cx , 24
mov si , 0
mov dx , [cs:calculated_location]
check:
mov ax , word[cs:bricks_start_location + si]
mov bx , word[cs:bricks_end_location + si]
add si , 2
cmp dx , ax
jae checknext
loop check
jmp end_ofFunc
checknext:
cmp dx , bx
jbe remove
loop check
jmp end_ofFunc
remove:
cmp ax,846
jne np
mov byte[cs:solid],1
np:
sub si , 2
mov di , word[cs:bricks_start_location + si]
mov cx , 6
mov ax , 0x0720
rep stosw
call sound
add word[cs:score] , 5
dec word[cs:total_bricks]
mov ax , 174
push ax
push word[cs:score]
call printnum
end_ofFunc:
pop bx
pop si
pop cx
pop dx
pop ax
pop es
ret
bricks:
push es
push cx
push bx
push si
push di
mov ax, 0xb800
mov es, ax ; point es to video base
mov di, 810 ; point di to top left column
mov si , 0
mov bx , 0
cld
brickline1:
cmp di , 936
ja brickline2
mov ah , 0x90
mov al , 0x20
mov cx , 6
rep stosw
mov cx , 3
mov ax, 0x0720
rep stosw
add si , 2
jmp brickline1
brickline2:
mov di , 1290
brickline2_print:
cmp di, 1416
ja brickline3
mov ah , 0xe0
mov al , 0x20
mov cx , 6
rep stosw
mov cx , 3
mov ax, 0x0720
rep stosw
add si , 2
jmp brickline2_print
brickline3:
mov di, 1770
brickline2_print3:
cmp di, 1896
ja endn
mov ah , 0x50
mov al , 0x20
mov cx , 6
rep stosw
mov cx , 3
mov ax, 0x0720
rep stosw
add si , 2
jmp brickline2_print3
endn:
mov di,846
mov cx,6
mov al,0x20
mov ah,0x40
rep stosw
pop di
pop si
pop bx
pop cx
pop es
ret
clearStacker:
push bp
mov bp , sp
push es
push ax
push di
push cx
mov ax , 0xb800
mov es , ax
mov ax , 0x0720
mov cx , 13
mov di , [bp+4]
rep stosw
mov di,[cs:preBall]
mov word[es:di],ax
pop cx
pop di
pop ax
pop es
pop bp
ret 2
printStacker:
push bp
mov bp , sp
push es
push ax
push di
push cx
mov ax , 0xb800
mov es , ax
mov al , 0x20
mov ah , 0xb0
mov cx , 13
mov di , [bp+4]
mov word[cs:left_limit] , di
rep stosw
sub di , 2
mov word[cs:right_limit] , di
mov ax , word[cs:right_limit]
sub ax,12
mov word[cs:mid] , ax
sub ax,160
mov di,ax
shr ax,1
sub ax,1680
mov cx,ax
cmp byte[cs:StayOnStacker],1
jne endi
mov al,'O'
mov ah,0x07
mov word[es:di],ax
mov [cs:preBall],di
mov word[cs:row],21
mov word[cs:colume],cx
mov word[cs:previous],di
endi:
pop cx
pop di
pop ax
pop es
pop bp
ret 2
stacker:
push ax
push di
cmp word[cs:right_] , 1
je movRight
cmp word[cs:left_] , 1
je movLeft
movRight:
mov ax, word[cs:pre_stack_pos]
add ax , 8
cmp ax , word[cs:right_edge]
ja exit1
mov di, word[cs:pre_stack_pos]
push di
call clearStacker
push ax
call printStacker
mov word[cs:pre_stack_pos] , ax
jmp exit1
movLeft:
mov ax, word[cs:pre_stack_pos]
sub ax , 8
cmp ax , word[cs:left_edge]
jb exit1
mov di, word[cs:pre_stack_pos]
push di
call clearStacker
push ax
call printStacker
mov word[cs:pre_stack_pos] , ax
jmp exit1
exit1:
pop di
pop ax
ret
calculate_position: ;;;; first push x then push y
push bp
mov bp , sp
push ax
mov al , 80
mul byte[bp+4]
add ax , [bp+6]
shl ax ,1
mov word[cs:calculated_location] , ax
pop ax
pop bp
ret 4
nextposition:
push ax
push bx
push cx
mov al,[cs:incC]
mov ah,[cs:incR]
mov bx,[cs:colume]
mov cx,[cs:row]
cmp word[cs:colume],3
jne nextcond4
mov al,1
jmp rowCheck3
nextcond4:
cmp word[cs:colume],77
jne rowCheck3
mov al,0
rowCheck3:
cmp word[cs:row],4
jne nextcond5
mov ah,1
jmp printingLocation1
nextcond5:
cmp word[cs:row],22
jne printingLocation1
mov ah,0
printingLocation1:
cmp al,1
jne nextcond6
add bx,1
jmp rowCheck4
nextcond6:
sub bx,1
rowCheck4:
cmp ah,1
jne nextcond7
add cx,1
jmp calculatelocation1
nextcond7:
sub cx,1
calculatelocation1:
push bx ;colume
push cx ;row
call calculate_position
pop cx
pop bx
pop ax
ret
left_right:
push ax
mov ax , word[cs:calculated_location]
cmp ax , [cs:mid]
ja check_right
cmp ax , [cs:left_limit]
jb endit
mov byte[cs:left_or_right] , 0
jmp endit
check_right:
cmp ax , [cs:right_limit]
ja endit
mov byte[cs:left_or_right] , 1
jmp endit
endit:
pop ax
ret
ball:
push es
push ax
push bx
push cx
push di
mov ax,0xb800
mov es,ax
mov di,[cs:previous]
mov word[es:di],0x0720
call nextposition
mov di,[cs:calculated_location]
mov ax,word[es:di]
cmp ah,0x07
je R
cmp ah,0xb0
je n
call brick_remove
jmp n1
n:
call left_right
cmp byte[cs:left_or_right],1
jne n3
mov byte[cs:incC],1
jmp n1
n3:
mov byte[cs:incC],0
n1:
cmp byte[cs:incR],1
jne r1
mov byte[cs:incR],0
jmp R
r1:
cmp byte[cs:incR],0
jne R
mov byte[cs:incR],1
R:
cmp word[cs:colume],3
jne nextcond
mov byte[cs:incC],1
jmp rowCheck
nextcond:
cmp word[cs:colume],77
jne rowCheck
mov byte[cs:incC],0
rowCheck:
cmp word[cs:row],4
jne nextcond1
mov byte[cs:incR],1
jmp printingLocation
nextcond1:
cmp byte[cs:solid],0
jne solid12
cmp word[cs:row],22
jne printingLocation
mov byte[cs:StayOnStacker],1
mov ax,word[cs:mid]
sub ax,160
mov di,ax
shr ax,1
sub ax,1680
mov cx,ax
mov al,'O'
mov ah,0x07
mov word[es:di],ax
mov [cs:preBall],di
mov word[cs:row],21
mov word[cs:colume],cx
mov word[cs:previous],di
sub byte[cs:live],1
cmp byte[cs:live],0
;call print_lives
jne endii
;push cs
;jmp far endgame;;;;;;;;;;;;;;;;;;;
jmp endii
solid12:
cmp word[cs:row],23
jne printingLocation
mov byte[incR],0
printingLocation:
cmp byte[cs:incC],1
jne nextcond2
add word[cs:colume],1
jmp rowCheck1
nextcond2:
sub word[cs:colume],1
rowCheck1:
cmp byte[cs:incR],1
jne nextcond3
add word[cs:row],1
jmp calculatelocation
nextcond3:
sub word[cs:row],1
calculatelocation:
mov ax,word[cs:row]
mov bx,80
mul bx
add ax,word[cs:colume]
shl ax,1
mov di,ax
mov word[cs:previous],ax
mov ah,0x07
mov al,'O'
mov word[es:di],ax
endii:
pop di
pop cx
pop bx
pop ax
pop es
ret
call_instruction_menu: db 0
instruction_menu:
push ax
call clrscr
mov ax , 370 ; row 6 col 25
push ax
mov ax ,instructions_str
push ax
mov ax , 11
push ax
call printstr_B
mov ax , 690 ; row 6 col 25
push ax
mov ax , ttl_live_str
push ax
mov ax , 22
push ax
call printstr
mov ax , 1010
push ax
mov ax , play_str
push ax
mov ax , 24
push ax
call printstr
mov ax , 1330
push ax
mov ax , solid_base_str
push ax
mov ax , 41
push ax
call printstr
mov ax , 1650
push ax
mov ax , bonus_note_str
push ax
mov ax , 43
push ax
call printstr
mov ax , 1970
push ax
mov ax , space_bar
push ax
mov ax , 31
push ax
call printstr
mov ax , 2290
push ax
mov ax , left_arrow
push ax
mov ax , 34
push ax
call printstr
mov ax , 2610
push ax
mov ax , exit_str
push ax
mov ax , 15
push ax
call printstr
pop ax
ret
kbisr:
push ax
push es
mov word[cs:right_] , 0
mov word[cs:left_] , 0
mov ax, 0xb800
mov es, ax
in al, 0x60 ; read a char from keyboard port
cmp byte[start_game] , 0
jne main_game
cmp al , 0x1c
jne cmp_instruction
mov byte[start_game] , 1
jmp exit
cmp_instruction:
cmp al , 0x17
jne exit
mov byte[call_instruction_menu] , 1
cmp byte[start_game] , 1
jne exit
main_game:
cmp al, 0x4b ; left arrow
jne nextcmp ; no, try next comparison
mov word[cs:left_] , 1
call stacker ;
jmp exit ; leave interrupt routine
nextcmp:
cmp al, 0x4d ; right arrow
jne nextcmp2 ; no, leave interrupt routine
mov word[cs:right_] , 1
call stacker
jmp exit
nextcmp2:
cmp al, 0xad ; has the A key released
jne nextcmp3 ; no, try next comparison
;leave interrupt routine
jmp exit
nextcmp3:
cmp al, 0xab ; has the D key released
jne nextcmp4 ; no, chain to old ISR
jmp exit
nextcmp4:
cmp al,0x39
jne nextcmp5
mov byte[cs:StayOnStacker],0
jmp exit
nextcmp5:
cmp al,0xb9
jne exitcmp
jmp exit
exitcmp:
cmp al,0x12
jne quitcmp
mov byte[cs:end_game] , 1
jmp exit
quitcmp:
cmp al , 0x10
jne restartcmp
mov byte[cs:quit] , 1
jmp exit
restartcmp:
cmp al , 0x13
jne nomatch
mov byte[cs:restart] , 1
jmp exit
nomatch:
pop es
pop ax
jmp far [cs:oldisr]
exit:
mov al, 0x20
out 0x20, al
pop es
pop ax
iret
timer:
cmp byte[cs:start_game],1
jne pp
inc byte[cs:clock]
cmp byte[cs:clock],18
jne ppp
add word[cs:second],1
mov byte[cs:clock],0
ppp:
cmp byte[cs:solid],1
jne po
inc byte[cs:solid1]
cmp byte[cs:solid1],180
jne po
mov byte[cs:solid],0
po: