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my_bbc.inc
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my_bbc.inc
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MAX_WIDTH=20
MAX_HEIGHT=12
RNDL = $F8
RNDH = $F9
PTR2 = $3C
PTR = $3D
TEMP2 = $4A
CURSOR_ON = $4B
CURSOR_ENABLED = $4C
KEY_RIGHT = 137
KEY_RIGHT2 = 68 ; d
KEY_LEFT = 136
KEY_LEFT2 = 65 ; a
KEY_UP = 139
KEY_UP2 = 87 ; w
KEY_DOWN = 138
KEY_DOWN2 = 83 ; s
KEY_FLAG = $0D
KEY_DIG = $20
KEY_START = $0D
KEY_FW = 137
KEY_HW = 136
KEY_HARDER = 139
KEY_EASIER = 138
.MACRO start_irq
nop
.ENDMACRO
.MACRO ack_irq
jmp restore_irq
.ENDMACRO
.MACRO CLEAR_CURSOR
jsr clear_cursor
.ENDMACRO
.MACRO GETIN
JSR $FFE0
.ENDMACRO
.macro hide_cursor
.endmacro
.macro show_cursor
.endmacro
.macro SILENCE
.endmacro
; Y = col
; TMP = row
; A = line to draw
; uses X, A
.proc draw_whole_cursor
tya
pha
ldy #0
: cpy #8
beq :+
lda #%00001111
eor (PTR),Y
sta (PTR),Y
iny
jmp :-
: pla
tay
rts
.ENDPROC
; TEMP = symbol to draw(multiple of 8)
.PROC draw_symbol
txa
pha
tya
pha
ldx TEMP
ldy #0
: cpy #8
beq :+
lda symbols,X
sta (PTR),Y
iny
inx
jmp :-
: pla
tay
pla
tax
rts
symbols:
.include "bbc_symbols.inc"
.ENDPROC
.PROC draw_symbol2
txa
pha
tya
pha
ldx TEMP
ldy #0
: cpy #8
beq :+
lda symbols2,X
and TEMP2
sta (PTR),Y
iny
inx
jmp :-
: pla
tay
pla
tax
rts
symbols2:
.include "bbc_symbols2.inc"
.ENDPROC
.PROC draw_symbol2_shifted
txa
pha
tya
pha
ldx TEMP
ldy #0
: cpy #8
beq :+
lda draw_symbol2::symbols2,X
and #$0F
lsr
ora (PTR),Y
sta (PTR),Y
iny
inx
jmp :-
: pla
tay
pla
tax
rts
.ENDPROC
.macro draw_string_shadow len, addr
lda #$FF
sta TEMP2
ldx #0
: cpx #len
beq :++
lda addr,X
asl
asl
asl
sta TEMP
jsr draw_symbol2
jsr draw_symbol2_shifted
lda PTR
clc
adc #8
sta PTR
bcc :+
inc PTR+1
: inx
jmp :--
:
.endmacro
.macro draw_string len, addr, mask
lda mask
sta TEMP2
ldx #0
: cpx #len
beq :+++
lda addr,X
cmp #0
beq :+
asl
asl
asl
sta TEMP
jsr draw_symbol2
: lda PTR
clc
adc #8
sta PTR
bcc :+
inc PTR+1
: inx
jmp :---
:
.endmacro
.PROC init
OSWRCH = $FFEE
OSBYTE = $FFF4
sei
LDA #22
JSR OSWRCH
LDA #$5
JSR OSWRCH
LDA #23
JSR OSWRCH
LDA #1
JSR OSWRCH
LDA #0
JSR OSWRCH
lda #65
jsr $FFE3
jsr $FFE3
jsr $FFE3
jsr $FFE3
jsr $FFE3
jsr $FFE7
cli
SendULA:
ldx #0
NextULAreg:
lda ULAConfig,X
sta $FE21 ;Load in color config
inx
txa
cmp #16
bne NextULAreg
lda #4
ldx #1
jsr OSBYTE
rts
ULAConfig:
Palette0: ;Colour&07 &17 &27 &37 &47 &57 &67 &77
; SC SC - S=Screen C=Color
.byte $07,$17 ;0
.byte $26,$36 ;0
Palette1:
.byte $47,$57 ;1
.byte $66,$76 ;1
Palette2:
.byte $84,$94 ;2
.byte $A0,$B0 ;2
Palette3:
.byte $C4,$D4 ;3
.byte $E0,$F0 ;3
;EOR True Color
;7 (0) black
;6 (1) red
;5 (2) green
;4 (3) yellow (green—red)
;3 (4) blue
;2 (5) magenta (red—blue)
;1 (6) cyan (green—blue)
;0 (7) white
.ENDPROC
.PROC clock_irq
pha
txa
pha
tya
pha
lda TEMP
pha
lda PTR
pha
lda PTR+1
pha
jmp clock
.ENDPROC
.PROC restore_irq
pla
sta PTR+1
pla
sta PTR
pla
sta TEMP
pla
tay
pla
tax
pla
rts
.ENDPROC
.PROC setup_timer
OSBYTE = $FFF4
lda #<clock_irq
sta $220
lda #>clock_irq
sta $221
lda #14
ldx #4
jsr OSBYTE
rts
.ENDPROC
.PROC won_screen
lda #0
sta CURSOR_ENABLED
jsr stop_clock
jsr reveal_mines
jsr print_board
jsr conclude_music
jsr print_intersections
jsr print_horizontals
jsr print_verticals
lda #($E0 - (5*8))
sta PTR
lda #$77
sta PTR+1
draw_string 8, str, #$F0
jmp press_return
str: .byte 25, 15, 21, 28, 23, 9, 14, 27
.ENDPROC
.PROC lost_screen
lda #0
sta CURSOR_ENABLED
jsr stop_clock
jsr reveal_mines
jsr conclude_music
jsr print_board
jsr print_intersections
jsr print_horizontals
jsr print_verticals
lda #($E0 - (5*8))
sta PTR
lda #$77
sta PTR+1
draw_string 8, str, #$0F
jmp press_return
str: .byte 25, 15, 21, 28, 12, 15, 19, 5
.endproc
.proc setup_sound
;ENVELOPE 1,1,1,-1,0,1,1,200,126,-2,-1,-20,126,60
ldx #<envelope_data
ldy #>envelope_data
lda #8
jsr $FFF1 ; OSWORD
ldx #<envelope_data2
ldy #>envelope_data2
lda #8
jsr $FFF1 ; OSWORD
rts
envelope_data:
.byte 1,1,1,$FF,0,1,1,200,126,$FE,$FF,($FF-19),126,60
envelope_data2:
.byte 2,1,0,0,0,0,0,0,50,0,0,($FF-49),126,126
.endproc
.proc dig_sound
ldx #<sound_data
ldy #>sound_data
lda #7
jsr $FFF1 ; OSWORD
rts
sound_data:
.word $0000, $FFF1, 101, $6
rts
.endproc
.proc bass_note
tya
pha
txa
asl
asl
asl
clc
adc #<sound_data
tax
ldy #>sound_data
lda #7
jsr $FFF1 ; OSWORD
pla
tay
rts
sound_data:
.word $0001, $0002, 5, $6
.word $0001, $0002, 13, $6
.word $0001, $0002, 17, $6
.endproc
.proc treble_note
tya
pha
txa
asl
asl
asl
clc
adc #<sound_data
tax
ldy #>sound_data
lda #7
jsr $FFF1 ; OSWORD
pla
tay
rts
sound_data:
.word $0002, $0001, 101, $0003
.word $0002, $0001, 109, $0003
.word $0002, $0001, 113, 3
.word $0002, $0001, 125, 3
.word $0002, $0001, 129, 3
.word $0002, $0001, 137, 3
.byte $13, $6F ; D
.byte $14, $96 ; Eflat
.byte $18, $7C ; fsharp
.byte $19, $F0 ; G
.byte $1D, $1E ; A
rts
.endproc
.proc clear_cursor
lda CURSOR_ON
cmp #0
bne :+
rts
: jmp flash_cursor
.endproc
.proc position_cursor_sprite
lda #$0
sta CURSOR_ON
lda #1
sta CURSOR_ENABLED
jmp flash_cursor
.endproc
.proc flash_cursor
lda CURSOR_ENABLED
cmp #0
beq @end
lda CURSOR_ON
eor #$FF
sta CURSOR_ON
lda #0
sta PTR
lda #$58
sta PTR+1
ldx #0
lda PTR
@loop:
cpx cursor_col
beq @loop_end
clc
adc #16
bcc :+
inc PTR+1
: inx
jmp @loop
@loop_end:
ldx #0
@loop2:
cpx cursor_row
beq @loop2_end
inc PTR+1
inc PTR+1
clc
adc #$80
bcc :+
inc PTR+1
: inx
jmp @loop2
@loop2_end:
sta PTR
jmp draw_whole_cursor
@end: rts
.endproc
.proc draw_halfwidth_backdrop
lda #$98
sta PTR
lda #$58
sta PTR+1
ldy #0
ldx #0
lda #(13*8)
sta TEMP
lda #$0F
sta TEMP2
@rowloop:
cpx #24
beq @end
ldy #0
@colloop:
cpy #20
beq @endcolloop
jsr draw_symbol2
iny
lda PTR
clc
adc #8
bcc :+
inc PTR+1
: sta PTR
jmp @colloop
@endcolloop:
inx
lda PTR
clc
adc #(20*8)
bcc :+
inc PTR+1
: sta PTR
jmp @rowloop
@end:
rts
.endproc
.proc press_return
lda #$E8
sta PTR
lda #$78
sta PTR+1
draw_string 12, str, #$FF
@waitforkey:
GETIN
cmp #$0D
beq :+
jmp @waitforkey
: jmp main_menu
str: .byte 16, 18, 5, 19, 19,0, 18, 5, 20, 21, 18, 14
.endproc
.proc hide_byline
lda #$FF
sta TEMP2
lda #$40
sta PTR
lda #$77
sta PTR+1
lda #(28*8) ;(256-8)
sta TEMP
ldx #0
: cpx #80
beq :++
jsr draw_symbol2
lda PTR
clc
adc #8
bcc :+
inc PTR+1
: sta PTR
inx
jmp :--
:
lda #$00
sta PTR
lda #$7B
sta PTR+1
draw_string 40, string_four, #$FF
rts
string_four: .byte 18, 5, 20, 21, 18, 14, 13, 6, 12, 1, 7,28,28,28
.byte 19, 16, 1, 3, 5, 13, 4, 9, 7, 28,28,28,28
.byte 1, 18, 18, 15, 23, 19,13, 3, 21, 18, 19, 15, 18,28
.endproc
.proc print_static_hud
lda #$FF
sta TEMP2
lda #$C0
sta PTR
lda #$74
sta PTR+1
lda #0 ;(256-8)
sta TEMP
ldx #0
: cpx #40
beq :++
jsr draw_symbol2
lda PTR
clc
adc #8
bcc :+
inc PTR+1
: sta PTR
inx
jmp :--
: rts
.endproc
.proc print_board
lda #0
; PTR stores the current row in video ram
; PTR2 stores the current row in color ram
; Y stores the position in current row
; X stores the current index into the board
sta PTR
lda #$58
sta PTR+1
ldy #0
ldx #0
@loop: lda board,x
and #UNCOVERED
cmp #UNCOVERED
beq @check_mine
;it's covered, is there a flag?
lda board, x
and #FLAG_PLACED
cmp #FLAG_PLACED
bne :+
; cell is flag
lda #208
sta TEMP
jmp @draw
: ; cell is covered
lda #0
sta TEMP
jmp @draw
@check_mine:
lda board, X
and #MINE_PLACED
cmp #MINE_PLACED
bne :+
; mine is here
lda #216 ; '*' char
sta TEMP
jmp @draw
: lda board,X
and #NEIGHBOURS
cmp #0
bne :+
; no neighbouring mines
lda #$8; ' ' char
sta TEMP
jmp @draw
; number for neighbouring mines
:
asl
asl
asl
clc
adc #128
sta TEMP
@draw: jsr draw_symbol; foo
lda PTR
clc
adc #16
sta PTR
bcc @continue
inc PTR+1
@continue:
inx
iny
cpy width
bne :+++
lda PTR
: cpy #20
beq :+
iny
clc
adc #(8*2)
bcc :-
inc PTR+1
jmp :-
: sta PTR
ldy #0
inc PTR+1
lda PTR
clc
adc #($40)
sta PTR
bcc :+
inc PTR+1
: cpx size
beq :+
jmp @loop
: rts
.endproc
.proc print_board_size
lda #$F0
sta TEMP2
lda width
cmp #20
bne @hw
lda #$0F
sta TEMP2
@hw:
lda #$E8
sta PTR
lda #$78
sta PTR+1
draw_string 8, str, TEMP2
lda TEMP2
eor #$FF
sta TEMP2
draw_string 4, str2, TEMP2
rts
str: .byte 8, 1, 12, 6,28,28,28,28
str2: .byte 6, 21, 12, 12
.endproc
.PROC print_verticals
lda #$40
sta PTR
lda #$59
sta PTR+1
ldy #0
ldx #0
@loop: tya
pha
lda intersections,X
tay
lda @char_table,y
sta TEMP
pla
tay
@draw: jsr draw_symbol; foo
lda PTR
clc
adc #16
sta PTR
bcc @continue
inc PTR+1
@continue:
inx
iny
cpy width
bne :+++
lda PTR
: cpy #20
beq :+
iny
clc
adc #(8*2)
bcc :-
inc PTR+1
jmp :-
: sta PTR
ldy #0
inc PTR+1
lda PTR
clc
adc #($40)
sta PTR
bcc :+
inc PTR+1
: cpx size_m1
beq :+
jmp @loop
: rts
@char_table:
; blank ;tl ;tr;tw ;bl ;lc ;lr ;BR ;br ;rl :rc :BL ;bw ;TR ;TL ;CL
.byte 0,32,0,32,40,8,40,8,0,32,0,32,40,8,40,8
.ENDPROC
.PROC print_horizontals
lda #8
sta PTR
lda #$58
sta PTR+1
ldy #0
ldx #0
@loop: tya
pha
lda intersections,X
tay
lda @char_table,y
sta TEMP
pla
tay
@draw: jsr draw_symbol; foo
lda PTR
clc
adc #16
sta PTR
bcc @continue
inc PTR+1
@continue:
inx
iny
cpy width_m1
bne :+++
lda PTR
: cpy #19
beq :+
iny
clc
adc #(8*2)
bcc :-
inc PTR+1
jmp :-
: sta PTR
inx
ldy #0
inc PTR+1
lda PTR
clc
adc #($50)
sta PTR
bcc :+
inc PTR+1
: cpx size
beq :+
jmp @loop
: rts
@char_table:
; blank ;tl ;tr;tw ;bl ;lc ;lr ;BR ;br ;rl :rc :BL ;bw ;TR ;TL ;CL
.byte 0,16,24,8,0,16,24,8,0,16,24,8,0,16,24,8
.ENDPROC
.PROC print_intersections
lda #$48
sta PTR
lda #$59
sta PTR+1
ldy #0
ldx #0
@loop: tya
pha
lda intersections,X
tay
lda @char_table,y
sta TEMP
pla
tay
@draw: jsr draw_symbol; foo
lda PTR
clc
adc #16
sta PTR
bcc @continue
inc PTR+1
@continue:
inx
iny
cpy width_m1
bne :+++
lda PTR
: cpy #19
beq :+
iny
clc
adc #(8*2)
bcc :-
inc PTR+1
jmp :-
: sta PTR
inx
ldy #0
inc PTR+1
lda PTR
clc
adc #($50)
sta PTR
bcc :+
inc PTR+1
: cpx size_m1
beq :+
jmp @loop
: rts
@char_table:
; blank ;tl ;tr;tw ;bl ;lc ;lr ;BR ;br ;rl :rc :BL ;bw ;TR ;TL ;CL
.byte 0,48,56,32,64,16,112,72,80,120,24,88,40,104,96,8
.ENDPROC
.PROC print_menu
jsr print_static_hud
jsr print_hud
jsr print_board_size
lda #($18+8)
sta PTR
lda #$5C
sta PTR+1
draw_string 95, string_two, #$FF
lda #104
sta PTR
lda #$5D
sta PTR+1
draw_string_shadow 13, string_one
lda #($E0 - (6*8))
sta PTR
lda #$77
sta PTR+1
draw_string 10, string_three, #$FF
lda #$00
sta PTR
lda #$7B
sta PTR+1
draw_string 40, string_four, #$FF
rts
string_one: .byte 1, 18, 3, 8, 1, 5, 15, 12, 15, 7, 9, 19, 20
string_two: .byte 10,31,31,31,31,31,31,31,31,31,31,31,31,31,11,0,0,0,0,0,0,0,0,0,0,0,0,0,0
.byte 0,0,0,0,0,0,0,0,0,0,0,29,28,28,28,28,28,28,28,28,28,28,28,28,28,30,0,0,0,0,0,0,0,0,0,0,0,0,0,0
.byte 0,0,0,0,0,0,0,0,0,0,0,22,24,24,24,24,24,24,24,24,24,24,24,24,24,17
string_three: .byte 2, 15, 1, 18, 4,28, 19, 9, 26, 5
string_four: .byte 18, 5, 20, 21, 18, 14,13,19, 20, 1 ,18, 20,28,28,28,28,28,28,28,28,28,28,28,1, 18, 18, 15, 23, 19, 13, 4, 9, 6, 6, 9, 3, 21, 12, 20, 25,0
.ENDPROC
.PROC print_hud
lda #$F8
sta PTR
lda #$75
sta PTR+1
ldy flags
ldx #23
@loop:
cpx #0
beq @done
lda #(96+64+24+24+32+8)
cpy #0
beq :+
dey
lda #(96+64+24+24+32)
cpy #0
beq :+
dey
lda #(96+64+24+24+16+8)
: sta TEMP
dec PTR+1
lda PTR
sec
sbc #$40
bcs :+
dec PTR+1
: sta PTR
dex
jsr draw_symbol
jmp @loop
@done:
rts
.ENDPROC