mirror of
https://github.com/deater/dos33fsprogs.git
synced 2024-11-16 23:20:43 +00:00
204 lines
2.6 KiB
ArmAsm
204 lines
2.6 KiB
ArmAsm
|
|
;===================================
|
|
;===================================
|
|
; load the game
|
|
;===================================
|
|
;===================================
|
|
load_game:
|
|
|
|
lda #<load_message
|
|
sta OUTL
|
|
lda #>load_message
|
|
sta OUTH
|
|
|
|
jsr confirm_slot
|
|
|
|
bcs done_load
|
|
|
|
; actually load it
|
|
clc
|
|
adc #LOAD_SAVE1
|
|
sta WHICH_LOAD
|
|
|
|
jsr load_file
|
|
|
|
; copy to zero page
|
|
|
|
ldx #0
|
|
load_loop:
|
|
lda $e00,X
|
|
sta WHICH_LOAD,X
|
|
inx
|
|
cpx #(END_OF_SAVE-WHICH_LOAD+1)
|
|
bne load_loop
|
|
|
|
lda #$ff
|
|
sta LEVEL_OVER
|
|
|
|
done_load:
|
|
|
|
bit SET_GR ; turn graphics back on
|
|
|
|
rts
|
|
|
|
;===================================
|
|
;===================================
|
|
; save the game
|
|
;===================================
|
|
;===================================
|
|
|
|
save_game:
|
|
|
|
lda #<save_message
|
|
sta OUTL
|
|
lda #>save_message
|
|
sta OUTH
|
|
|
|
jsr confirm_slot
|
|
|
|
bcs done_save
|
|
|
|
pha
|
|
|
|
|
|
;========================
|
|
; actually save
|
|
actually_save:
|
|
|
|
;===============================
|
|
; first load something from
|
|
; disk1/track0 to seek the head there
|
|
|
|
lda WHICH_LOAD
|
|
pha
|
|
|
|
lda #LOAD_SAVE1
|
|
sta WHICH_LOAD
|
|
jsr load_file
|
|
|
|
pla
|
|
sta WHICH_LOAD
|
|
|
|
; copy save data to $d00
|
|
|
|
ldx #0
|
|
copy_loop:
|
|
lda WHICH_LOAD,X
|
|
sta $d00,X
|
|
inx
|
|
cpx #(END_OF_SAVE-WHICH_LOAD+1)
|
|
bne copy_loop
|
|
|
|
; spin up disk
|
|
jsr driveon
|
|
|
|
; actually save it
|
|
pla
|
|
clc
|
|
adc #11
|
|
sta requested_sector+1
|
|
|
|
jsr sector_write
|
|
|
|
jsr driveoff
|
|
|
|
done_save:
|
|
|
|
jsr change_location ; restore graphics
|
|
|
|
rts
|
|
|
|
|
|
|
|
|
|
|
|
|
|
;================================
|
|
; confirm and get slot number
|
|
;================================
|
|
; call with first message in OUTL/OUTH
|
|
; return: carry set if skipping
|
|
|
|
confirm_slot:
|
|
|
|
bit KEYRESET ; clear keyboard buffer
|
|
|
|
;===============================
|
|
; print "are you sure" message
|
|
|
|
bit SET_TEXT ; set text mode
|
|
|
|
lda #' '|$80
|
|
sta clear_all_color+1
|
|
jsr clear_all ; clear screen
|
|
|
|
jsr move_and_print
|
|
|
|
lda #<are_you_sure
|
|
sta OUTL
|
|
lda #>are_you_sure
|
|
sta OUTH
|
|
jsr move_and_print
|
|
|
|
jsr page_flip
|
|
|
|
wait_confirmation:
|
|
lda KEYPRESS
|
|
bpl wait_confirmation
|
|
|
|
bit KEYRESET ; clear keypress
|
|
|
|
and #$7f
|
|
cmp #'Y'
|
|
bne dont_do_it
|
|
|
|
;===============================
|
|
; print "Which one?"
|
|
|
|
jsr clear_all ; clear screen
|
|
|
|
lda #<which_message
|
|
sta OUTL
|
|
lda #>which_message
|
|
sta OUTH
|
|
jsr move_and_print
|
|
|
|
jsr page_flip
|
|
|
|
which_slot:
|
|
lda KEYPRESS
|
|
bpl which_slot
|
|
|
|
bit KEYRESET ; clear keypress
|
|
|
|
and #$7f
|
|
sec
|
|
sbc #'1'
|
|
|
|
bmi dont_do_it
|
|
cmp #5
|
|
bcs dont_do_it
|
|
|
|
clc
|
|
rts
|
|
|
|
dont_do_it:
|
|
sec
|
|
rts
|
|
|
|
|
|
which_message:
|
|
.byte 9,5,"WHICH SLOT (1-5)?",0
|
|
|
|
load_message:
|
|
.byte 10,5,"LOAD GAME FROM DISK",0
|
|
|
|
save_message:
|
|
.byte 11,5,"SAVE GAME TO DISK",0
|
|
|
|
are_you_sure:
|
|
.byte 10,7,"ARE YOU SURE? (Y/N)",0
|
|
|
|
;save_filename:
|
|
;.byte "SAVE0",0
|