Subversion Repositories Kolibri OS

;;===Level_mode================================================================================================================

Level_begin:

      call      Load_level

      call      Get_eat

Level_body:

    ;;===Level_body========================================================================================================

      call      Hide_cursor

mcall     26, 9

    mov  [time_before_waiting], eax

    mov  eax, [time_wait_limit]

    mov  [time_to_wait],    eax

  .redraw:

      mcall     12,1

    mov  ebx, [wp_x]

    shl  ebx, 16

    add  ebx, dword[window_width]

    mov  ecx, [wp_y]

    shl  ecx, 16

    add  ecx, dword[window_height]

      mcall     0, , ,[window_style], ,window_title

      call      Draw_decorations

      call      Draw_stones

      call      Draw_snake

      call      Draw_eat

      call      Draw_level_strings

      mcall     12,2

  .still:

      mcall     26, 9

    push eax

    sub  eax, [time_before_waiting]

    pop  [time_before_waiting]

    cmp  [time_to_wait],    eax

     jg  @f

    cmp  [action],  0

     jne Game_step

  @@:

    sub  [time_to_wait],    eax

      mcall     23, [time_to_wait]              ;

    test al,  al

     jnz  @f

    cmp  [action],  0

     jne Game_step

      mcall     26, 9

    mov  [time_before_waiting], eax

    mov  eax, [time_wait_limit]

    mov  [time_to_wait],    eax

     jmp .still

  @@:

      .message:                                 ; ok, what an event?

        dec  al                                 ; has the window been moved or resized?

         jz  .redraw                            ;

        dec  al                                 ; was a key pressed?

         jz  .key                               ;

        dec  al                                 ; was a button pressed?

         jz  .button                            ;

  .button:                                      ; ¯à®æ¥¤ãà  ®¡à ¡®ª¨ ª­®¯®ª ¢ ¯à®£à ¬¬¥

      mcall     17                              ; äã­ªæ¨ï 17: ¯®«ãç¨âì ­®¬¥à ­ ¦ â®© ª­®¯ª¨

    shr  eax, 8                                 ; ᤢ¨£ ¥¬ ॣ¨áâà eax ­  8 ¡¨â ¢¯à ¢®, çâ®¡ë ¯®«ãç¨âì ­®¬¥à ­ ¦ â®© ª­®¯ª¨

    cmp  eax, 1

     je  Save_do_smth_else_and_exit             ; ¥á«¨ íâ® ­¥ ª­®¯ª  1 (§ à¥§¥à¢¨à®¢ ­  á¨á⥬®© ª ª ª­®¯ª  § ªàëâ¨ï ¯à®£à ¬¬ë), ¯à®¯ã᪠¥¬ 2 á«¥¤ãî騥 áâà®çª¨ ª®¤ 

     jmp .still

  .key:

      mcall     2                               ; get keycode

    cmp  ah,  0x1B                              ; Escape

     je  First_menu

    cmp  ah,  0x20                              ; Space

     je  Pause_mode

    cmp  ah,  0xB0                              ; Left

     je  .key.left

    cmp  ah,  0xB1                              ; Down

     je  .key.down

    cmp  ah,  0xB2                              ; Up

     je  .key.up

    cmp  ah,  0xB3                              ; Right

     je  .key.right

     jmp .still                                 ; jump to wait for another event

  .key.left:

    bts  [action],  0

     jc  @f

    mov  [time_to_wait],    0

  @@:

    mov  [snake_direction_next],    LEFT

     jmp .still

  .key.down:

    bts  [action],  0

     jc  @f

    mov  [time_to_wait],    0

  @@:

    mov  [snake_direction_next],    DOWN

     jmp .still

  .key.up:

    bts  [action],  0

     jc  @f

    mov  [time_to_wait],    0

  @@:

    mov  [snake_direction_next],    UP

     jmp .still

  .key.right:

    bts  [action],  0

     jc  @f

    mov  [time_to_wait],    0

  @@:

    mov  [snake_direction_next],    RIGHT

     jmp .still

  Game_step:

    cmp  [snake_direction], LEFT                ; are we moving to left?

     jz  .left

    cmp  [snake_direction], DOWN                ; ... down?

     jz  .down

    cmp  [snake_direction], UP                  ; ... up?

     jz  .up

     jmp .right                                 ; then right

  .left:

    cmp  [snake_direction_next],    RIGHT       ; next step is to right?

     jz  .with_reverse

     jmp .without_reverse

  .down:

    cmp  [snake_direction_next],    UP          ; next step is to up?

     jz  .with_reverse

     jmp .without_reverse

  .up:

    cmp  [snake_direction_next],    DOWN        ; next step is to bottom?

     jz  .with_reverse

     jmp .without_reverse

  .right:

    cmp  [snake_direction_next],    LEFT        ; next step is to left?

     jz  .with_reverse

     jmp .without_reverse

  .with_reverse:

      call      Set_reverse_direction

      call      Reverse

  .without_reverse:

    mov  edx, snake_dots-2

    add  edx, [snake_length_x2]

    cmp  [snake_direction_next],    LEFT

     je  .to_left

    cmp  [snake_direction_next],    DOWN

     je  .to_down

    cmp  [snake_direction_next],    UP

     je  .to_up

    cmp  [snake_direction_next],    RIGHT

     je  .to_right

      .to_left:

        mov  [snake_direction], LEFT

        mov  ax,  [edx]

        dec  al

        cmp  al,  -1

         jne @f

        mov  al,  GRID_WIDTH

        dec  al

      @@:

         jmp Snake_move

      .to_down:

        mov  [snake_direction], DOWN

        mov  ax,  [edx]

        inc  ah

        cmp  ah,  GRID_HEIGHT

         jne @f

        mov  ah,  0

      @@:

         jmp Snake_move

      .to_up:

        mov  [snake_direction], UP

        mov  ax,  [edx]

        dec  ah

        cmp  ah,  -1

         jne @f

        mov  ah,  GRID_HEIGHT

        dec  ah

      @@:

         jmp Snake_move

      .to_right:

        mov  [snake_direction], RIGHT

        mov  ax,  [edx]

        inc  al

        cmp  al,  GRID_WIDTH

         jne @f

        mov  al,  0

      @@:

         jmp Snake_move

    ;;---Level_body--------------------------------------------------------------------------------------------------------

;;---Level_mode----------------------------------------------------------------------------------------------------------------

;;===Some_functions============================================================================================================

Draw_snake:

    ;;===Draw_snake========================================================================================================

      call      Draw_head_prehead

    mov  edx, [snake_color]

    mov  esi, snake_dots-6

    add  esi, [snake_length_x2]

  @@:

    mov  bx,  [esi]

    sub  esi, 2

      call      Draw_square

    cmp  esi, snake_dots-2

     jne @b

    ret

    ;;---Draw_snake--------------------------------------------------------------------------------------------------------

Draw_head_prehead:

    ;;===Draw_head_prehead=================================================================================================

    mov  edx, [snake_head_color]

    mov  esi, snake_dots-2

    add  esi, [snake_length_x2]

    mov  bx,  [esi]

      call      Draw_square

    sub  esi, 2

    mov  bx,  [esi]

    mov  edx, [snake_color]

      call      Draw_square

    ret

    ;;---Draw_head_prehead-------------------------------------------------------------------------------------------------

Draw_level_strings:

    ;;===Draw_level_strings================================================================================================

    mov  ebx, [window_width]

    shr  ebx, 1

    sub  ebx, string_pause_space.size*3+6

    shl  ebx, 16

    add  ebx, [top_strings]

      mcall     4, ,[navigation_strings_color],string_pause_space ; Draw 'PAUSE - SPACE' string

;    call    Draw_menu_esc

    call    Draw_score_string

    call    Draw_score_number                   ; Draw score (number)

    call    Draw_champion_string

    call    Draw_champion_name

    call    Draw_hiscore_string

    call    Draw_hiscore_number

    cmp  [play_mode],   LEVELS_MODE

     jne @f

    mov  ebx, [window_width]

    shr  ebx, 3

    sub  ebx, 5

    shl  ebx, 16

    add  ebx, [bottom_bottom_strings]

      mcall     4, ,[level_string_color],string_level

    mov  edx, [window_width]

    shr  edx, 3

    sub  edx, 5+1

    add  edx, string_level.size*6

    shl  edx, 16

    add  edx, [bottom_bottom_strings]

      mcall     47,0x00020000,[cur_level_number], ,[level_number_color],[background_color]

  @@:

    ret

    ;;---Draw_level_strings------------------------------------------------------------------------------------------------

Reverse:

    ;;===Reverse===========================================================================================================

    mov  ecx, [snake_length_x2]

    shr  ecx, 2

    mov  esi, snake_dots

    mov  edi, snake_dots-2

    add  edi, [snake_length_x2]

  @@:

    mov  ax,  [edi]

    xchg ax,  [esi]

    mov  [edi], ax

    add  esi, 2

    sub  edi, 2

    dec  cx

     jnz @b

    ret

    ;;---Reverse-----------------------------------------------------------------------------------------------------------

Draw_eat:

    ;;===Draw_eat==========================================================================================================

    mov  bx,  word[eat]

    mov  edx, [eat_color]

    call    Draw_square

    ret

    ;;---Draw_eat----------------------------------------------------------------------------------------------------------

Get_eat:

    ;;===Get_eat===========================================================================================================

    ;;  in  :

    ;;

    ;;  out :

    ;;          ax  =   coord's of the eat square (al=x, ah=y)

    ;;

      mcall     26,9

;    xor  eax, esp

    shl  eax, 1

    xor  edx, edx

    div  word[number_of_free_dots]

    mov  ebx, field_map

  .loop:

    cmp  byte[ebx], 0

     jne @f

    test dx,  dx

     jz  .place_found

    dec  dx

  @@:

    inc  ebx

     jmp .loop

  .place_found:

    sub  ebx, field_map

    mov  eax, ebx

    mov  bl,  GRID_WIDTH

    div  bl

    xchg al,  ah

    mov  word[eat], ax

    ret

    ;;---Get_eat-----------------------------------------------------------------------------------------------------------

Sdvig:

    ;;===Sdvig=============================================================================================================

    mov  esi, snake_dots+2

    mov  edi, snake_dots

    mov  ecx, [snake_length_x2]

    shr  ecx, 1

    cld

    rep  movsw

    ret

    ;;---Sdvig-------------------------------------------------------------------------------------------------------------

Set_reverse_direction:

    ;;===Set_reverse_direction==================================================================================================

    mov  eax, snake_dots

    mov  ebx, snake_dots+2

    mov  cl,  [eax]                             ; The last dot x_coord

    mov  ch,  [ebx]                             ; The pre_last dot x_coord

    cmp  cl,  ch

     je  .X_ravny

    cmp  cl,  0

     jne .skip2

    mov  dl,  GRID_WIDTH

    dec  dl

    cmp  ch,  dl

     jne .Normal_y_ravny

    mov  [snake_direction_next],    RIGHT

    ret

  .skip2:

    mov  dl,  GRID_WIDTH

    dec  dl

    cmp  cl,  dl

     jne .Normal_y_ravny

    cmp  ch,  0

     jne .Normal_y_ravny

    mov  [snake_direction_next],    LEFT

    ret

  .Normal_y_ravny:

    cmp  cl,  ch

     jg  .Napravlenie_to_right

    mov  [snake_direction_next],    LEFT

    ret

  .Napravlenie_to_right:

    mov  [snake_direction_next],    RIGHT

    ret

  .X_ravny:

    inc  eax

    inc  ebx

    mov  cl,  [eax]

    mov  ch,  [ebx]

    cmp  cl,  0

     jne .skip3

    mov  dl,  GRID_HEIGHT

    dec  dl

    cmp  ch,  dl

     jne .Normal_x_ravny

    mov  [snake_direction_next],    DOWN

    ret

  .skip3:

    mov  dl,  GRID_HEIGHT

    dec  dl

    cmp  ch,  dl

     jne .Normal_x_ravny

    cmp  ch,  0

     jne .Normal_x_ravny

    mov  [snake_direction_next],    UP

    ret

  .Normal_x_ravny:

    cmp  cl,  ch                                ; !!!

     jg  .Napravlenie_to_down                   ; 0 1 2 ...

    mov  [snake_direction_next],    UP          ; 1

    ret                                         ; 2

                                                ; .

  .Napravlenie_to_down:                         ; .

    mov  [snake_direction_next],    DOWN        ; .

    ret

    ;;---Set_reverse_direction--------------------------------------------------------------------------------------------------

Snake_move:

    ;;===Snake_move=============================================================================================================

    ;;  in  :

    ;;           ax =   coord's of new head

    ;;          edx =   snake_dots+[snake_length_x2]-2 (snake head)

    ;;

    add  edx, 2

    mov  [edx], ax

    cmp  ax,  word[eat]

     jne .eat_and_new_head_are_different

    add  [snake_length_x2], 2

    add  [score],   SCORE_EAT

    dec  [number_of_free_dots]

    cmp  [number_of_free_dots], 0

     je  Game_over

    mov  ax,  word[eat]

    mov  cl,  1

      call      Draw_on_map

      call      Draw_head_prehead

      call      Get_eat

      call      Draw_eat

     jmp Keys_done

  .eat_and_new_head_are_different:

    push ax

    mov  ax,  word[snake_dots]

    mov  cl,  0

      call      Draw_on_map

    pop ax

      call      Get_from_map

    test bl,  bl

     jnz Game_over

    mov  cl,  1

      call      Draw_on_map

    mov  bx,  word[snake_dots]

    mov  edx, [background_color]

      call      Draw_square

      call      Sdvig

      call      Draw_head_prehead

  Keys_done:

    cmp  [score],   0

     je  @f

    dec  [score]

      call      Draw_score_number

  @@:

    cmp  [play_mode],   LEVELS_MODE

     jne @f

    cmp  [snake_length_x2], (EAT_TO_END_LEVEL+3)*2

     je  Do_smth_between_levels

  @@:

      mcall     26, 9

    mov  [time_before_waiting], eax

    mov  eax, [time_wait_limit]

    mov  [time_to_wait],    eax

     jmp Level_body.still

    ;;---Snake_move------------------------------------------------------------------------------------------------------------

Do_smth_between_levels:

    ;;===Do_smth_between_levels================================================================================================

    inc  [cur_level_number]

    cmp  [cur_level_number],    LAST_LEVEL_NUMBER+1

     jne @f

    mov  [cur_level_number],    LEVELS_MODE_FIRST_LEVEL

  @@:

      call      Draw_splash

  @@:

      mcall     2

    cmp  eax, 1

     jne @b

     jmp Level_begin

    ;;---Do_smth_between_levels------------------------------------------------------------------------------------------------

Draw_splash:

    ;;===Draw_splash===========================================================================================================

    mov  al,  0

    mov  cl,  GRID_WIDTH-1

    mov  edx, [splash_background_color]

  .draw:

    mov  bh,  GRID_HEIGHT-1

    mov  bl,  al

  @@:

      call      Draw_square

    sub  bh,  2

    cmp  bh,  0

     jg  @b

    inc  al

    mov  bh,  GRID_HEIGHT-2

    mov  bl,  cl

  @@:

      call      Draw_square

    sub  bh,  2

    cmp  bh,  0

     jnl @b

    dec  cl

    cmp  cl,  0

     jl  @f

    push eax ebx

      mcall     5,PAUSE_WHILE_DRAWING_SPLASH

    pop  ebx eax

     jmp .draw

  @@:

    mov  ax,  2*0x100+24

    mov  cx,  1*0x100+5

    mov  edx, [splash_level_string_color]

    mov  esi, picture_level

      call      Draw_picture

    mov  eax, [cur_level_number]

    mov  dl,  10

    div  dl

    push ax

    mov  esi, digits_font

  @@:

    test al,  al

     jz  @f

    add  esi, 20

    dec  al

     jmp @b

  @@:

    mov  ax,  9*0x100+4

    mov  cx,  8*0x100+5

    mov  edx, [splash_level_number_color]

      call      Draw_picture

    pop  ax

    mov  esi, digits_font

  @@:

    test ah,  ah

     jz  @f

    add  esi, 20

    dec  ah

     jmp @b

  @@:

    mov  ax,  15*0x100+4

    mov  cx,  8*0x100+5

    mov  edx, [splash_level_number_color]

      call      Draw_picture

      mcall     5,PAUSE_BETWEEN_LEVELS

    ret

    ;;---Draw_splash-----------------------------------------------------------------------------------------------------------

;;---Some_functions------------------------------------------------------------------------------------------------------------