mirror of
https://github.com/deater/dos33fsprogs.git
synced 2024-11-05 11:06:53 +00:00
688 lines
12 KiB
ArmAsm
688 lines
12 KiB
ArmAsm
; Finally Arriving
|
|
|
|
; Simple Text/GR split
|
|
|
|
; Some zero-page action
|
|
;TFV_X = 0
|
|
;TFV_Y = 1
|
|
TFG_X = 2
|
|
;HEART_X = 3
|
|
;HEART_Y = 4
|
|
|
|
arriving_there:
|
|
|
|
|
|
;===================
|
|
; init screen
|
|
|
|
|
|
setup_arrival:
|
|
|
|
|
|
;===================
|
|
; init vars
|
|
|
|
lda #0
|
|
sta FRAME
|
|
sta FRAMEH
|
|
|
|
lda #0
|
|
sta TFV_X
|
|
|
|
lda #8
|
|
sta DRAW_PAGE
|
|
|
|
; lda #14
|
|
; sta HEART_X
|
|
|
|
; lda #20
|
|
; sta HEART_Y
|
|
|
|
lda #22
|
|
sta TFG_X
|
|
|
|
|
|
;=============================
|
|
; Load graphic page0
|
|
|
|
lda #$0c
|
|
sta BASH
|
|
lda #$00
|
|
sta BASL ; load image to $c00
|
|
|
|
|
|
lda #<arrival
|
|
sta GBASL
|
|
lda #>arrival
|
|
sta GBASH
|
|
jsr load_rle_gr
|
|
|
|
lda #$a0
|
|
ldy #10
|
|
jsr clear_page_loop ; make top 6 lines spaces
|
|
|
|
lda #0
|
|
sta DRAW_PAGE
|
|
|
|
bit PAGE0
|
|
|
|
sei ; disable interrupt music
|
|
|
|
;==============================
|
|
; setup graphics for vapor lock
|
|
;==============================
|
|
|
|
jsr vapor_lock ; 6
|
|
|
|
; vapor lock returns with us at beginning of hsync in line
|
|
; 114 (7410 cycles), so with 5070 lines to go
|
|
|
|
jsr gr_copy_to_current ; 6+ 9292
|
|
|
|
; now we have 322 left
|
|
|
|
; GR part
|
|
bit LORES ; 4
|
|
bit SET_GR ; 4
|
|
bit FULLGR ; 4
|
|
|
|
jsr draw_moon_sky ; 6+54
|
|
|
|
; 322 - 12 = 310
|
|
; - 3 for jmp
|
|
; 307 - 60 for sky = 247
|
|
|
|
; Try X=9 Y=6 cycles=307
|
|
; Try X=7 Y=6 cycles=247
|
|
|
|
ldy #6 ; 2
|
|
arloopA:ldx #7 ; 2
|
|
arloopB:dex ; 2
|
|
bne arloopB ; 2nt/3
|
|
dey ; 2
|
|
bne arloopA ; 2nt/3
|
|
|
|
jmp ar_begin_loop
|
|
.align $100
|
|
|
|
|
|
;================================================
|
|
; Arrival Loop
|
|
;================================================
|
|
; each scan line 65 cycles
|
|
; 1 cycle each byte (40cycles) + 25 for horizontal
|
|
; Total of 12480 cycles to draw screen
|
|
; Vertical blank = 4550 cycles (70 scan lines)
|
|
; Total of 17030 cycles to get back to where was
|
|
|
|
; want 12*4 = 48 lines of TEXT = 3120-4=3116
|
|
; want 144-48 = 96 lines of undisturbed LORES = 6240 - 4 = 6236
|
|
; lores lines 24-36 (80 - 143) are changing
|
|
; so don't do much then
|
|
; want 192-144=48 lines of LORES = 3120
|
|
|
|
|
|
|
|
ar_begin_loop:
|
|
|
|
; 3120
|
|
; -4 set_text
|
|
; -25 inc frame
|
|
; -17 set state
|
|
; -43 move
|
|
; -8 check if done
|
|
;=======
|
|
; 3023
|
|
|
|
bit SET_TEXT ; 4
|
|
|
|
;====================
|
|
; Update frame count
|
|
;====================
|
|
; no carry: 13+(12) = 25
|
|
; carry: 13+12 = 25
|
|
|
|
inc FRAME ; 5
|
|
lda FRAME ; 3
|
|
cmp #20 ; 2
|
|
bne ar_waste_12 ; 3
|
|
;============
|
|
; 13
|
|
|
|
; -1
|
|
lda #0 ; 2
|
|
sta FRAME ; 3
|
|
inc FRAMEH ; 5
|
|
jmp ar_no_carry ; 3
|
|
;============
|
|
; 12
|
|
ar_waste_12:
|
|
lda $0 ; 3
|
|
lda $0 ; 3
|
|
lda $0 ; 3
|
|
lda $0 ; 3
|
|
|
|
ar_no_carry:
|
|
|
|
;=================
|
|
; check if done
|
|
;=================
|
|
|
|
lda FRAMEH ; 3
|
|
cmp #32 ; 2
|
|
bne ar_not_done ; 3
|
|
jmp ar_all_done
|
|
ar_not_done:
|
|
;===========
|
|
; 8
|
|
|
|
; Set the state
|
|
; STATE0 = 5+4+(5)+3 = 17
|
|
; STATE2 = 5+5+4+3 = 17
|
|
; STATE4 = 5+5+2+3+(2) =17
|
|
|
|
; looking at FRAMEH (orig 5,16,30) -> 9, 20, 32
|
|
; if 0 < 9 then STATE0 (waiting) $0 < $9
|
|
; if 9 < 20 then STATE2 (walking) $9 < $14
|
|
; if 20 < 32 then STATE4 (heart) $14 < $20
|
|
|
|
cmp #9 ; 2
|
|
bcs ar_state_notzero ; bge ; 3
|
|
ar_state_zero:
|
|
; -1
|
|
lda $0 ; nop ; 3
|
|
nop ; 2
|
|
ldx #0 ; 2
|
|
jmp ar_set_state ; 3
|
|
ar_state_notzero:
|
|
cmp #20 ; 2
|
|
bcs ar_state_four ; bge ; 3
|
|
ar_state_two:
|
|
; -1
|
|
ldx #2 ; 2
|
|
jmp ar_set_state ; 3
|
|
ar_state_four:
|
|
nop ; 2
|
|
ldx #4 ; 2
|
|
|
|
ar_set_state:
|
|
stx STATE ; 3
|
|
|
|
;====================
|
|
; Move TFV
|
|
;====================
|
|
; if move, 6+13=19
|
|
; if not move, 6+13=19
|
|
lda FRAME ; only move if FRAME==0 ; 3
|
|
beq arv_move ; 3
|
|
|
|
arv_nomove: ; -1
|
|
lda $0 ;nop ; 3
|
|
lda $0 ;nop ; 3
|
|
lda $0 ;nop ; 3
|
|
nop ; 2
|
|
jmp arv_done_move ; 3
|
|
arv_move:
|
|
lda STATE ; 3
|
|
lsr ; 2
|
|
clc ; 2
|
|
adc TFV_X ; 3
|
|
sta TFV_X ; 3
|
|
arv_done_move:
|
|
|
|
;====================
|
|
; Move TFG
|
|
; if move, 6+18=24
|
|
; if not move, 6+18=24
|
|
lda FRAME ; only move if FRAME===0 ; 3
|
|
beq arg_move ; 3
|
|
|
|
arg_nomove: ; -1
|
|
lda $0 ;nop ; 3
|
|
lda $0 ;nop ; 3
|
|
lda $0 ;nop ; 3
|
|
lda $0 ;nop ; 3
|
|
nop ; 2
|
|
nop ; 2
|
|
jmp arg_done_move ; 3
|
|
arg_move:
|
|
lda STATE ; 3
|
|
and FRAMEH ; 3
|
|
lsr ; 2
|
|
eor #$ff ; make negative ; 2
|
|
sec ; 2
|
|
adc TFG_X ; 3
|
|
sta TFG_X ; 3
|
|
arg_done_move:
|
|
|
|
|
|
|
|
; Try X=29 Y=20 cycles=3021 R2
|
|
|
|
nop
|
|
|
|
ldy #20 ; 2
|
|
arloop8:ldx #29 ; 2
|
|
arloop9:dex ; 2
|
|
bne arloop9 ; 2nt/3
|
|
dey ; 2
|
|
bne arloop8 ; 2nt/3
|
|
|
|
|
|
;==========================
|
|
; Set graphics mode, delay until done displaying the yard
|
|
;==========================
|
|
|
|
bit SET_GR ; 4
|
|
|
|
; Try X=53 Y=23 cycles=6234 R2
|
|
|
|
nop
|
|
|
|
ldy #23 ; 2
|
|
arloop6:ldx #53 ; 2
|
|
arloop7:dex ; 2
|
|
bne arloop7 ; 2nt/3
|
|
dey ; 2
|
|
bne arloop6 ; 2nt/3
|
|
|
|
;===============================
|
|
; Draw the Field
|
|
;===============================
|
|
draw_the_field:
|
|
|
|
|
|
;===============================
|
|
; Draw one of three states
|
|
;===============================
|
|
; STATE0 = draw nothing
|
|
; STATE2 = draw open door + walking TFV+susie
|
|
; STATE4 = draw heart
|
|
|
|
; Set up jump table that runs same speed on 6502 and 65c02
|
|
ldy STATE ; 3
|
|
lda ar_jump_table+1,y ; 4
|
|
pha ; 3
|
|
lda ar_jump_table,y ; 4
|
|
pha ; 3
|
|
rts ; 6
|
|
|
|
;=============
|
|
; 23
|
|
|
|
ar_jump_table:
|
|
.word (ar_state0-1)
|
|
.word (ar_state2-1)
|
|
.word (ar_state4-1)
|
|
|
|
ar_back_from_jumptable:
|
|
|
|
|
|
;======================================================
|
|
; We have 4550 cycles in the vblank, use them wisely
|
|
;======================================================
|
|
|
|
; do_nothing should be 3120 (bottom of GR screen)
|
|
; 4550 (vblank)
|
|
; -23 (setup jump table)
|
|
; -6237 (in state code)
|
|
; -10 keypress
|
|
; -1038 play_music
|
|
; ===========
|
|
; 362
|
|
|
|
jsr play_music ; 6+1032
|
|
|
|
; Try X=5 Y=45 cycles=1396 R4
|
|
|
|
; Try X=3 Y=17 cycles=358 R4
|
|
|
|
nop
|
|
nop
|
|
|
|
ldy #17 ; 2
|
|
arloop1:ldx #3 ; 2
|
|
arloop2:dex ; 2
|
|
bne arloop2 ; 2nt/3
|
|
dey ; 2
|
|
bne arloop1 ; 2nt/3
|
|
|
|
|
|
lda KEYPRESS ; 4
|
|
bpl ar_no_keypress ; 3
|
|
jmp ar_all_done
|
|
ar_no_keypress:
|
|
|
|
jmp ar_begin_loop ; 3
|
|
|
|
ar_all_done:
|
|
bit KEYRESET ; clear keypress ; 4
|
|
cli ; re-enable interrupt music
|
|
rts ; 6
|
|
|
|
|
|
|
|
;=====================
|
|
; State0 : do nothing
|
|
;=====================
|
|
; Delay 6237
|
|
; -1524
|
|
; -3
|
|
;===========
|
|
; 4710
|
|
|
|
ar_state0:
|
|
|
|
; draw fs standing
|
|
lda #>tfg_stand_left ; 2
|
|
sta INH ; 3
|
|
lda #<tfg_stand_left ; 2
|
|
sta INL ; 3
|
|
|
|
lda #22 ; 2
|
|
sta XPOS ; 3
|
|
lda #24 ; 2
|
|
sta YPOS ; 3
|
|
|
|
jsr put_sprite ; 6
|
|
;=========
|
|
; 26 + 1498 = 1524
|
|
|
|
; Try X=35 Y=26 cycles=4707 R3
|
|
lda $0
|
|
ldy #26 ; 2
|
|
arloopT:ldx #35 ; 2
|
|
arloopU:dex ; 2
|
|
bne arloopU ; 2nt/3
|
|
dey ; 2
|
|
bne arloopT ; 2nt/3
|
|
|
|
jmp ar_back_from_jumptable ; 3
|
|
|
|
|
|
|
|
;======================================================
|
|
; State2 : draw walking
|
|
;======================================================
|
|
; 785 = erase field
|
|
; 3 (return)
|
|
; 1490 = 1471+19 (draw tfv)
|
|
; 33 (draw susie)
|
|
; 1538 = 1519+19 (draw fs)
|
|
; 1937 (draw falls)
|
|
|
|
;==========
|
|
; 5786
|
|
; - 6237
|
|
.align $100
|
|
ar_state2:
|
|
jsr erase_field ; 6+779
|
|
|
|
; Try X=2 Y=28 cycles=449 R2
|
|
nop
|
|
ldy #28 ; 2
|
|
arloopZ:ldx #2 ; 2
|
|
arloopX:dex ; 2
|
|
bne arloopX ; 2nt/3
|
|
dey ; 2
|
|
bne arloopZ ; 2nt/3
|
|
;
|
|
; jmp ar_back_from_jumptable ; 3
|
|
|
|
lda TFV_X ; 3
|
|
sta XPOS ; 3
|
|
lda #24 ; 2
|
|
sta YPOS ; 3
|
|
|
|
lda FRAMEH ; 3
|
|
and #$1 ; 2
|
|
beq ar_walk ; 3
|
|
;===========
|
|
; 19
|
|
|
|
|
|
ar_stand:
|
|
; draw deater standing ; -1
|
|
lda #>tfv_stand_right ; 2
|
|
sta INH ; 3
|
|
lda #<tfv_stand_right ; 2
|
|
sta INL ; 3
|
|
jsr put_sprite ; 6
|
|
|
|
; need to waste 61 cycles
|
|
lda #34 ; 2
|
|
jsr delay_a ; 25+34 = 59
|
|
|
|
jmp girl_walk ; 3
|
|
;=========
|
|
; 18 + 1392 = 1410
|
|
|
|
|
|
ar_walk:
|
|
; draw deater walking
|
|
lda #>tfv_walk_right ; 2
|
|
sta INH ; 3
|
|
lda #<tfv_walk_right ; 2
|
|
sta INL ; 3
|
|
jsr put_sprite ; 6
|
|
;=========
|
|
; 16 + 1455 = 1471
|
|
|
|
|
|
; girl walk
|
|
girl_walk:
|
|
lda TFG_X ; 3
|
|
sta XPOS ; 3
|
|
lda #24 ; 2
|
|
sta YPOS ; 3
|
|
|
|
lda FRAMEH ; 3
|
|
and #$1 ; 2
|
|
beq arg_walk ; 3
|
|
;===========
|
|
; 19
|
|
|
|
|
|
arg_stand:
|
|
; draw fs standing ; -1
|
|
lda #>tfg_stand_left ; 2
|
|
sta INH ; 3
|
|
lda #<tfg_stand_left ; 2
|
|
sta INL ; 3
|
|
jsr put_sprite ; 6
|
|
|
|
lda $0 ; nop ; 3
|
|
|
|
jmp ar_susie ; 3
|
|
;=========
|
|
; 21 + 1498 = 1519
|
|
|
|
|
|
arg_walk:
|
|
; draw fs walking
|
|
lda #>tfg_walk_left ; 2
|
|
sta INH ; 3
|
|
lda #<tfg_walk_left ; 2
|
|
sta INL ; 3
|
|
jsr put_sprite ; 6
|
|
;=========
|
|
; 16 + 1503 = 1519
|
|
|
|
|
|
; draw susie
|
|
; 33 cycles
|
|
ar_susie:
|
|
; draw susie at TFV_X-5, IFF TFV_X>10
|
|
lda TFV_X ; 3
|
|
sec ; 2
|
|
sbc #4 ; 2
|
|
tax ; 2
|
|
cpx #1 ; 2
|
|
bpl ar_yes_susie ; bge ; 3
|
|
;============
|
|
; 14
|
|
ar_no_susie:
|
|
; -1
|
|
inc TFV_Y ; 5
|
|
dec TFV_Y ; 5
|
|
nop ; 2
|
|
nop ; 2
|
|
lda $0 ; 3
|
|
jmp ar_done_susie ; 3
|
|
;============
|
|
; 19
|
|
ar_yes_susie:
|
|
lda #0 ; 2
|
|
sta $4d0,X ; 5
|
|
sta $4d1,X ; 5
|
|
lda #$0f ; 2
|
|
sta $4d2,X ; 5
|
|
ar_done_susie:
|
|
;===========
|
|
; 19
|
|
|
|
|
|
|
|
ar_draw_wfall:
|
|
; draw minifalls
|
|
lda #>wfall_sprite ; 2
|
|
sta INH ; 3
|
|
lda #<wfall_sprite ; 2
|
|
sta INL ; 3
|
|
|
|
lda #0 ; 2
|
|
sta XPOS ; 3
|
|
lda #24 ; 2
|
|
sta YPOS ; 3
|
|
|
|
jsr put_sprite ; 6
|
|
;=========
|
|
; 26 + 1911 = 1937
|
|
|
|
|
|
|
|
jmp ar_back_from_jumptable ; 3
|
|
|
|
.align $100
|
|
|
|
;======================================================
|
|
; State4 : heart
|
|
;======================================================
|
|
; 6237
|
|
; -473 (draw heart)
|
|
; -217 (erase heart)
|
|
; -3 = return
|
|
;==========
|
|
; 5544
|
|
|
|
|
|
ar_state4:
|
|
|
|
jsr erase_heart ; 6+211
|
|
|
|
lda FRAMEH ; 3
|
|
and #$f ; 2
|
|
tax ; 2
|
|
lda ar_heart_lookup_x,x ; 4
|
|
sta XPOS ; 3
|
|
|
|
lda ar_heart_lookup_y,x ; 4
|
|
sta YPOS ; 3
|
|
|
|
; draw heart
|
|
lda #>heart_sprite ; 2
|
|
sta INH ; 3
|
|
lda #<heart_sprite ; 2
|
|
sta INL ; 3
|
|
|
|
jsr put_sprite ; 6
|
|
;=========
|
|
; 37 + 436 = 473
|
|
|
|
|
|
ar_done_heart:
|
|
; delay
|
|
|
|
; Try X=47 Y=23 cycles=5544
|
|
|
|
ldy #23 ; 2
|
|
arloopV:ldx #47 ; 2
|
|
arloopW:dex ; 2
|
|
bne arloopW ; 2nt/3
|
|
dey ; 2
|
|
bne arloopV ; 2nt/3
|
|
|
|
jmp ar_back_from_jumptable
|
|
|
|
|
|
;======================
|
|
; erase field
|
|
;======================
|
|
; erase to green 4-25, 24-35
|
|
|
|
; 4+ 22*[30 + 5 ] + 5 = 779
|
|
erase_field:
|
|
|
|
lda #$44 ; green ; 2
|
|
ldx #21 ; 4 - 25 ; 2
|
|
field_loop:
|
|
sta $628+4,X ; 24 ; 5
|
|
sta $6a8+4,X ; 26 ; 5
|
|
sta $728+4,X ; 28 ; 5
|
|
sta $7a8+4,X ; 30 ; 5
|
|
sta $450+4,X ; 32 ; 5
|
|
sta $4d0+4,X ; 34 ; 5
|
|
|
|
dex ; 2
|
|
bpl field_loop ; 3
|
|
; -1
|
|
rts ; 6
|
|
|
|
|
|
;======================
|
|
; erase heart
|
|
;======================
|
|
; erase to black, (13-18,14-20)
|
|
; erase to green (13-18,20-24)
|
|
|
|
; 2+ 6*[29 + 5 ] + 5 = 211
|
|
erase_heart:
|
|
|
|
|
|
ldx #5 ; 13 - 18 ; 2
|
|
heart_loop:
|
|
lda #$00 ; black ; 2
|
|
sta $780+13,X ; 14 ; 5
|
|
sta $428+13,X ; 16 ; 5
|
|
sta $4a8+13,X ; 18 ; 5
|
|
lda #$44 ; green ; 2
|
|
sta $528+13,X ; 20 ; 5
|
|
sta $5a8+13,X ; 22 ; 5
|
|
dex ; 2
|
|
bpl heart_loop ; 3
|
|
; -1
|
|
rts ; 6
|
|
|
|
ar_heart_lookup_x:
|
|
.byte 14,14,14,14,14,14,13,13,14,14,14,14
|
|
|
|
; .byte 14,14,15,15,14,14,14,14
|
|
|
|
.byte 14,14,14,14
|
|
|
|
ar_heart_lookup_y: ; HEART_Y
|
|
.byte 16,16,16,16,20,20,18,18,16,16,16,16
|
|
.byte 16,16,16,16
|
|
|
|
heart_path:
|
|
; .byte $14,$20
|
|
; .byte $14,$20
|
|
; .byte $13,$18
|
|
; .byte $13,$18
|
|
; .byte $14,$16
|
|
; .byte $15,$16
|
|
; .byte $15,$14
|
|
; .byte $14,$14
|
|
|
|
|