我试图创造一个简单的游戏，坦克射击，并且块被摧毁，但我被困在摧毁块。在我的代码中，我尝试使用读取像素中断（int 10h / ah = 0Dh）。但每当我开枪时，子弹都不会自动退出。我真的不知道为什么。但是当我尝试在没有读取像素的情况下进行拍摄时，只使用一个简单的计数器，子弹就完美地移因此可以安全地假设我的子弹工作正常。如果我尝试将读取像素合并到其中进行拍摄。什么都没发生，有人可以告诉我为什么吗？感谢
PS：我正在使用Tasm; Textpad;视窗。视频模式= 13h这是我的宏：
drawSquare MACRO color,cy,cx,dy,dx
mov ah,06
mov al, 0
mov bh,color
mov ch,cy
mov cl,cx
mov dh,dy
mov dl,dx
int 10h
endm
clear_select MACRO x1, y1, x2, y2
drawSquare 00h, y1, x1, y2, x2
endm
;------------------------------------
include macros.txt
.model small
.stack
.data
VideoSegment EQU 0A000h
saveMode db ?
R db 0
G db 0
B db 63
time db 0
mSecs db 100
x1 dw 05
y1 dw 10
x2 dw 07
y2 dw 15
tankY1 db 08h
tankY2 db 0ah
tankY3 db 07h
tankY4 db 0bh
shootY db 00h
shootX1 db 00h
shootX2 db 00h
lengths dw 0
count db 0
.code
main proc
mov ax, @data
mov ds, ax
call SetVideoMode
call SetScreenBackground ;blue for the tank
drawSquare 04h, 00h, 00h, 18h, 02h ; red for tank bg
call Tank
drawSquare 04h, 01h, 20h, 18h, 25h ; blocks
;---------------------
;FOR THE TIMER
mov ah, 1
div mSecs
mov dl, ah
lea si, time
mov [si], dl
;--------------------
move:
drawSquare 04h, 01h, 20h, 18h, 25h ; red for tank bg
mov ah, 07
int 21h
cmp al, "w"
je up
cmp al, "s"
je down
cmp al, 20h
je shoot
jmp outC
up:
dec tankY1
dec tankY2
dec tankY3
dec tankY4
sub y1, 32
call TankAll
jmp move
down:
inc tankY1
inc tankY2
inc tankY3
inc tankY4
sub y1, 16
call TankAll
jmp move
shoot:
;bullet to be in the same Y position of the tanks front
mov al, tankY1
mov shootY, al
add shootY, 01h
;bullet length
mov shootX1, 04h
mov shootX2, 06h
mov count, 20
bullets:
drawSquare 01h, shootY, shootX1, shootY, shootX2 ;bullet
;timer
mov ah, 2ch
int 21h
;if there is a change in the timer
cmp [si], dl
jne change
jmp bullets
change:
;store back to time
mov [si], dl
clear_select shootX1, shootY, shootX2, shootY ;clear bullet
inc shootX1 ;to move the bullet
inc shootX2 ;to move the bullet
;read color pixel
mov ah, 0Dh
mov bh, 0
mov cx, word ptr [shootX1]
mov dx, word ptr [shootY]
int 10h
cmp al, 4
je outC
jmp bullets
comment!
;specify number of bullet movements
cmp count, 0
je next
dec count
jmp bullets
next:!
jmp move
outC:
or al, 30h
;print color value
mov ah, 02
mov dl, al
int 21h
call RestoreVideoMode
mov ax, 4c00h
int 21h
main endp
TankAll proc
clear_select 00h, 00h, 02h, 18h
drawSquare 04h, 00h, 00h, 18h, 02h ; red for tank bg
call Tank
ret
TankAll endp
SetScreenBackground proc
mov dx, 3c8h
mov al, 0
out dx, al
mov dx, 3c9h
mov al, R
out dx, al
mov al, G
out dx, al
mov al, B
out dx, al
ret
SetScreenBackground endp
SetVideoMode proc
mov ah, 0fh
int 10h
mov saveMode, al
mov ah, 0
mov al, 13h
int 10h
push 0A000h
pop es
ret
SetVideoMode endp
RestoreVideoMode proc
mov ah, 10h
int 16h
mov ah, 0
mov al, saveMode
int 10h
ret
RestoreVideoMode endp
Tank proc ;Cut not draw
drawSquare 00h, 00h, 02h, tankY1, 02h
drawSquare 00h, tankY2, 02h, 19h, 02h
drawSquare 00h, 00h, 00h, tankY3, 01h
drawSquare 00h, tankY4, 00h, 19h, 01h
ret
Tank endp
end main