mirror of
https://github.com/deater/dos33fsprogs.git
synced 2024-09-17 08:54:50 +00:00
213 lines
2.9 KiB
ArmAsm
213 lines
2.9 KiB
ArmAsm
;=====================================
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; Rasterbars in Space
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;
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; a cycle-counting game
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;
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; by deater (Vince Weaver) <vince@deater.net>
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;=====================================
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; Zero Page
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FRAMEBUFFER = $00 ; $00 - $0F
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;; LZ4 addresses
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LZ4_SRC = $00
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LZ4_DST = $02
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LZ4_END = $04
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COUNT = $06
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DELTA = $08
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CH = $24
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CV = $25
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GBASL = $26
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GBASH = $27
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BASL = $28
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BASH = $29
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MASK = $2E
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COLOR = $30
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FRAME = $60
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FRAMEH = $61
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BLARGH = $69
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ZPOS = $78
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GREEN0 = $80
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GREEN1 = $81
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GREEN2 = $82
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GREEN3 = $83
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GREEN4 = $84
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ZERO = $85
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GAME_OVER = $86
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SPRITE_XPOS = $E0
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SPRITE_YPOS = $E1
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RANDOM_PTR = $E2
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ASTEROID_X = $E3
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ASTEROID_Y = $E4
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ASTEROID_SUBX = $E5
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ASTEROID_EXPLODE= $E6
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FIRE_X = $E7
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FIRE_Y = $E8
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YADD = $E9
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BLAST1 = $EA
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BLAST2 = $EB
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FIRE = $EC
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LEVEL_DONE = $ED
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DRAW_PAGE = $EE
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LASTKEY = $F1
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PADDLE_STATUS = $F2
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XPOS = $F3
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YPOS = $F4
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WHICH = $F5
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ASTEROID_SPEED = $F6
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TEMP = $FA
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TEMPY = $FB
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INL = $FC
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INH = $FD
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OUTL = $FE
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OUTH = $FF
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; Soft Switches
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KEYPRESS= $C000
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KEYRESET= $C010
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SET_GR = $C050 ; Enable graphics
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SET_TEXT= $C051 ; Enable text
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FULLGR = $C052 ; Full screen, no text
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PAGE0 = $C054 ; Page0
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PAGE1 = $C055 ; Page1
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LORES = $C056 ; Enable LORES graphics
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HIRES = $C057 ; Enable HIRES graphics
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PADDLE_BUTTON0 = $C061
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PADDL0 = $C064
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PTRIG = $C070
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; ROM routines
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TEXT = $FB36 ;; Set text mode
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HOME = $FC58 ;; Clear the text screen
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WAIT = $FCA8 ;; delay 1/2(26+27A+5A^2) us
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;==================
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; show title screen
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;==================
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jsr title_screen
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;==================
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; Display Text
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;==================
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jsr instructions
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;==================
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; Mode7
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;==================
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; TODO
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;==================
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; 40x192 sprites
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;==================
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jsr start_sprites
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lda GAME_OVER
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bne game_over_man
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;==================
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; Rasterbars
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;==================
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jsr game
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;==================
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; Game Over
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;==================
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game_over_man:
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jsr game_over
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loop_forever:
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jmp loop_forever
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;==================================
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; HLINE
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;==================================
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; Color in A
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; Y has which line
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hline:
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pha ; 3
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ldx gr_offsets,y ; 4+
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stx hline_loop+1 ; 4
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lda gr_offsets+1,y ; 4+
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clc ; 2
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adc DRAW_PAGE ; 3
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sta hline_loop+2 ; 4
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pla ; 4
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ldx #39 ; 2
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hline_loop:
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sta $5d0,X ; 38 ; 5
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dex ; 2
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bpl hline_loop ; 2nt/3
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rts ; 6
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;==========================
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; Clear gr screen
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;==========================
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; Color in A
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clear_gr:
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ldy #46
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clear_page_loop:
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jsr hline
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dey
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dey
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bpl clear_page_loop
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rts
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.include "gr_offsets.s"
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.include "../asm_routines/gr_unrle.s"
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.include "../asm_routines/keypress.s"
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.include "gr_copy.s"
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.include "title.s"
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.include "instructions.s"
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.include "game.s"
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.include "text_print.s"
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.include "game_over.s"
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.align $100
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.include "vapor_lock.s"
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.include "delay_a.s"
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.include "lz4_decode.s"
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.align $100
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.include "gr_putsprite.s"
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.include "spacebars_title.inc"
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.align $100
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.include "mode7_sprites.inc"
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.align $100
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.include "sprites.s"
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