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Turmoil.asm
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Turmoil.asm
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; vim: ts=4
; vim: syntax=asm6809 foldmethod=marker fdo-=search
title "Alley Anxiety"
; DESCRIPTION
; Port of 20th Century Fox Atari 2600 game Turmoil
;
; TOOLS USED
; Editing, graphic drawing, assembly: VIDE http://vide.malban.de
; more sophisticated editing: VIM http://www.vim.org
; Testing on real hardware: MVBD + VecFever
;***************************************************************************
; DEFINE SECTION
;***************************************************************************
; load vectrex bios routine definitions
include "include/VECTREX.I" ; vectrex bios function include
; stuff that goes into RAM
include "include/vars.i" ; RAM allocation starting at $C880
include "include/macros.i" ; inlined code to save jsr/rts cycles
include "include/freq.i" ; refresh rates macros
;***************************************************************************
;{{{ HEADER SECTION
;***************************************************************************
; The cartridge ROM starts at address 0
code
ORG $0000
; the first few bytes are mandatory, otherwise the BIOS will not load
; the ROM file, and will start MineStorm instead
fcc "g GCE 2016", $80 ; 'g' is copyright sign
fdb music1 ; music from the rom
fdb $FC50
fcb $20, -$45 ; hight, width, rel y, rel x (from 0,0)
fcc "ALLEY ANXIETY", $80 ; title ending with $80
fdb $F850
fcb -$40, -$30 ; hight, width, rel y, rel x (from 0,0)
fcc $6E,$6E,$6F, $80 ; 3 solid blocks ending with $80
fdb $F850
fcb -$40, $23 ; hight, width, rel y, rel x (from 0,0)
fcc "-2022", $80 ; more date
db 0 ; end of game header
; bra restart ; TESTING skip intro to get right to it.
; jsr levelsplash ; REMOVE to return to normal flow
;}}}
; bra introSplash
;***************************************************************************
;{{{ MAGIC CARTHEADER SECTION for vecfever
; DO NOT CHANGE THIS STRUCT
;***************************************************************************
; ORG $0030
; fcb "ThGS" ; magic handshake marker
;v4ecartversion fdb $0001 ; I always have a version
; ; in comm. structs
;v4ecartflags fdb $4000
;}}}
;***************************************************************************
;{{{ CODE SECTION
;***************************************************************************
INTRO_BOOT ; runs ONCE per boot
RESTART ; jump here on game restart
main
WAIT_RECAL
; TEST area ; top of game loop
; lda #10
; sta VIA_t1_cnt_lo ; controls "scale"
; jsr Intensity_7F
; clrd
; MOVETO_D
; jsr Dot_here
; ldu #Tank_69
; jsr CURVY
; clrd
; MOVETO_D
; jsr Dot_here
; ldu #Tank_70
; jsr draw_curved_line
; jsr CURVY
; jmp main
; END TEST
READ_JOYSTICK
DRAW_LINE_WALLS
DRAW_SHIP
READ_BUTTONS
MOVE_BULLETS
DRAW_BULLETS
DRAW_VECTOR_SCORE
PRINT_SHIPS
NEW_ENEMY ; see if new enemy generation required
FRAME_CNTS ; advance/reset frame counters/timers
MOVE_ENEMYS ; math to move enemies
DRAW_ENEMYS ; ...
SHOT_COLLISION_DETECT
SHIP_Y_COLLISION_DETECT
SHIP_X_COLLISION_DETECT
STALL_CHECK ; can't just sit in an open alley forever...
ALLEY_TIMEOUT ; prevent alleys from respawning instantly
CHECK_LEVEL_DONE ; check if level is over (all enemies killed)
CHECK_SFX ; sound update
; ldu #Tank_69
; jsr CURVY ; testing commented out RUM code ??
jmp main ; and repeat forever
;}}}
;-----------------------------------------------------------------------------------
;{{{ must go at bottom or fills up RAM instead of ROM
include "include/functions.i" ; ...
include "include/data.i" ; static data, shapes, tables, text
include "include/libsoundraw.i" ; quick sound effects routines
include "include/rawsounddata.i" ; the data used by
include "include/rawsoundroutines.i" ; the functions routing sounds to 3 channels
include "include/rasterDraw.asm" ; title screen from VIDE
include "include/ymPlayer.i" ; for song under high score
include "include/turmoil_ym.asm" ; our data for above
include "include/ds2431LowLevel.i" ; high score save stuff
include "include/ds2431HighLevel.i" ; using DS2431+ 1 wire eeprom
include "include/eeprom.i" ; uses the 2 above
include "include/draw_synced_list.i" ; from VIDE to, draw shapes with many vectors.
end
;}}}