1567 lines
45 KiB
NASM
1567 lines
45 KiB
NASM
.FILE 'UTIL.ASM'
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; SHELL PROGRAM - DO NOT MODIFY!
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; MARK TURMELL - MAY 24, 1989
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;
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.TITLE " UTILITY - GENERAL PURPOSE SUBROUTINES"
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**************************************************************************
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* *
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* COPYRIGHT (C) 1988 WILLIAMS ELECTRONICS GAMES, INC. *
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* ALL RIGHTS RESERVED. *
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* *
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**************************************************************************
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.WIDTH 132
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.OPTION B,D,L
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.MNOLIST
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* GET THE SYSTEM STUFF
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.INCLUDE "MPROC.EQU" ;MPROC EQUATES
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.INCLUDE "DISP.EQU" ;DISPLAY PROCESSOR EQUATES
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.INCLUDE "\VIDEO\SYS\GSP.INC" ;GSP ASSEMBLER EQUATES
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.INCLUDE "\VIDEO\SYS\SYS.INC" ;ZUNIT SYSTEM EQUATES
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.INCLUDE "\VIDEO\SYS\MACROS.HDR" ;MACROS, YEAH!
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.INCLUDE ROBO.EQU ;FOR TEXTOID!
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*UTILITY SUBROUTINE EQUATES
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.GLOBAL SCRCLR,MYOINIT,SETPPROC,GPALOBJ,GBPALOBJ
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.GLOBAL SHVELCPY,SHVELFLP,FLP,OBJOFF,OBJON,CLRPDATA
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.GLOBAL ADDSUPP,DELSUPP,STRLNRM,STRCNRM,STRCNRMO,STRLNRMO
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.GLOBAL RANDU,RANDOM,SRAND,RANGRAND,RANDPER,BLNKAREA,DTIME
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.GLOBAL FRANIM,AUTOEOFF,AUTOEON,DMAQWAIT,SYNCHALF
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.GLOBAL STRNGLEN,DMAN,CLRWORLD,CLR_SCRN
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.GLOBAL STRRNRM,FILLAREA,SYNCFULL,SCRFIL,GETCPNT
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*PAL EQUATES
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.GLOBL DELPAL,GETFPAL,INITBPAL,FINDPAL,INITPAL,PALSET
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*RAM EQUATES
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.GLOBL INTSYNC0,INTSYNC1,NOAUTOE,SYSCOPY
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.GLOBL GAMERASE
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; .REF GOUP ;ROBOATT
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.REF MYID ;WAVES
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.DEF STRNGRAM,HEXTOASC,GETANIX,DMAHALT,WRLD,PSTOP
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.BSS STRNGRAM,20*16
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.BSS WRLD,16
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.EVEN
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.TEXT
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**************************************************************************
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* *
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* HEXTOASC - CONVERTS A 32 BIT HEX # TO AN ASCII STRING TERMINATED *
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* BY 0 *
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* A8 = HEX # *
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* RETURNS: *
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* A8 PTR TO THE STRING *
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* *
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**************************************************************************
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HEXTOASC
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MMTM SP,A1,A2,A9
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CLR A1
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CLR A2 ;COMMA COUNT
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MOVE A1,-*SP,W ;HERE'S THE NULL TERMINATOR
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MOVK 10,A1 ;DIVISOR FOR DECIMAL
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MOVE A8,A9
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HEXTASC2
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CLR A8
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DIVU A1,A8
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ADDI '0',A9 ;MAKE THE REMAINDER ASCII
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MOVE A9,-*SP,W ;SAVE HERE
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MOVE A8,A9
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JRZ HEXTASC3 ;BR = DONE!
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INC A2
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CMPI 3,A2 ;COMMA CHECK
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JRLO HEXTASC2 ;BR = NO COMMA
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MOVI ',',A2
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MOVE A2,-*SP,W ;STUFF A COMMA
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CLR A2
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JRUC HEXTASC2
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HEXTASC3
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MOVI STRNGRAM,A1 ;STORE HERE FOR BLOW OUT
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MOVE A1,A8
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HEXTASC4
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MOVE *SP+,A9,W
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MOVB A9,*A1
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ADDK 8,A1
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MOVE A9,A9
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JRNZ HEXTASC4
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MMFM SP,A1,A2,A9
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RETS
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**************************************************************************
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* *
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* STRINGER - OUTPUT A TEXT STRING, THIS IS A PROCESS! *
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* A0 = SLEEP TIME BETWEEN CHARACTERS *
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* A4 = DMA CONTROL *
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* A6 = COLOR (16 BITS) *
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* A8 = PTR TO STRING *
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* A9 = [Y,X] SCREEN ADDRESS OF STRING *
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* A10 = [Y,X] SPACING *
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* A11 = POINTER TO FONT TABLE *
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* A14 = FLAGS - INSERT:JUSTIFY *
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* WRLD = ADJUST FOR WORLD COORDINATES
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* BIT 16 = 1 INSERT ON OBJECT LIST, 0 JUST QUEUE THE DMA *
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* JUSTIFY = 0 LEFT JUSTIFY *
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* 1 CENTER JUSTIFY *
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* 2 RIGHT JUSTIFY *
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* RETURNS: *
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* A8 = POINTS TO NEXT BYTE AFTER STRING TERMINATOR *
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* A9 = NEXT CURSOR POSITION AFTER THE STRING *
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* NOTE: CALL WITH JSRP *
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* *
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**************************************************************************
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*
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*STRING ENTRYPOINT, LEFT JUSTIFY, NORMAL, NOT PUT ON THE OBJECT LIST
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STRLNRM
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MMTM A12,A1,A4,A6,A14
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MOVI DMACNZ,A4
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CLR A14
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JRUC STRINGR1
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*
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*STRING ENTRYPOINT, CENTER JUSTIFY, NORMAL, NOT ON THE OBJECT LIST
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STRCNRM
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MMTM A12,A1,A4,A6,A14
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MOVI DMACNZ,A4
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MOVK 1,A14
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JRUC STRINGR1
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*
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*STRING ENTRYPOINT, RIGHT JUSTIFY, NORMAL, NOT PUT ON THE OBJECT LIST
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STRRNRM
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MMTM A12,A1,A4,A6,A14
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MOVI DMACNZ,A4
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MOVK 2,A14
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JRUC STRINGR1
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*
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*STRING ENTRYPOINT, LEFT JUSTIFY, INVERTED, NOT ON THE OBJECT LIST
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STRLINV
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MMTM A12,A1,A4,A6,A14
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MOVI DMACZ,A4
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CLR A14
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JRUC STRINGR1
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*
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*STRING ENTRYPOINT, CENTER JUSTIFY, INVERTED, NOT ON THE OBJECT LIST
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STRCINV
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MMTM A12,A1,A4,A6,A14
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MOVI DMACZ,A4
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MOVK 1,A14
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JRUC STRINGR1
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*
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*STRING ENTRYPOINT, LEFT JUSTIFY, NORMAL, OBJECT LIST
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STRLNRMO
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MMTM A12,A1,A4,A6,A14
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MOVI DMACNZ+M_NOCOLL,A4
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MOVI 10000H,A14
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JRUC STRINGR1
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*
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*STRING ENTRYPOINT, CENTER JUSTIFY, NORMAL, OBJECT LIST
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STRCNRMO
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MMTM A12,A1,A4,A6,A14
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MOVI DMACNZ+M_NOCOLL,A4
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MOVI 10001H,A14
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JRUC STRINGR1
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STRINGER
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MMTM A12,A1,A4,A6,A14
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STRINGR1
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MOVE A6,A5
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SLL 16,A5 ;SETUP CONSTANT COLOR IN FIXED PALETTE
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CLR A7
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MOVX A14,A7
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DEC A7
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JRN STRINGR2 ;NORMAL LEFT JUSTIFY
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JREQ STRINGRC
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*RIGHT JUSTIFY
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CALLR STRNGLEN ;GET THE STRING LENGTH
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JRUC STRINGRA
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*CENTER JUSTIFY
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STRINGRC
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CALLR STRNGLEN
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SRL 1,A7 ;STRNGLEN/2
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STRINGRA
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SUBXY A7,A9 ;ADJUST STRING STARTING POSITION
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STRINGR2
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MOVB *A8,A7 ;GET A CHARACTER
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SLL 24,A7
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SRL 24,A7 ;MAKE SURE WE'RE POSITIVE
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JREQ STRINGRX ;BR = STRING BE GONE BROTHA
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ADDK 8,A8 ;NEXT BYTE
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PUSH A0
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CMPI 20H,A7
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JRNE STRNCHAR ;BR = IT'S KOSH BABY
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MOVK 5,A7 ;HARD CODE A SPACE
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ADDXY A7,A9 ;AND ADD IT IN
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ADDXY A10,A9 ;ADD SPACING
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PULL A0
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JRUC STRINGR2 ;DON'T SLEEP ON A SPACE, IT LOOKS STUPID!!!
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STRNCHAR
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MMTM SP,A2,A3,A4,A10,A14
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MOVE A11,A1 ;ESCAPE TO THE OTHER SIDE
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SUBI 21H,A7 ;GET A BASE
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SLL 5,A7
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ADD A7,A1
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MOVE *A1,A1,L ;LOAD THE ADDRESS OF THE IMAGE HEADER
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CALLA GSAGOF
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CALLA GANIOF
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BTST 16,A14
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JREQ STRNQDMA ;BR = DO NORMAL DMA OF STRING
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*CREATE THE CHARACTER AS AN OBJECT, HERE
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CALLA GETOBJ
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JREQ STRNGDUN ;BR = NO OBJECT
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MOVE A1,*A0(OIMG),L
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MOVE A5,*A0(OPAL),L
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; MOVE A4,*A0(OFLAGS),W
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; MOVB @GOUP,A14
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; JRZ NOUP
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; MOVI -08000H,A14
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; JRUC UP
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;NOUP
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CLR A14
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;UP
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MOVE A14,*A0(OYVEL),L
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CLR A14
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MOVE A14,*A0(OXVEL),L
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MOVE A0,A14
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ADDI OSIZE+20H,A14
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MMTM A14,A2,A3,A4 ;STUFF VITAL SHIT!!!!
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; CLR A14
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; ADDI OZVEL+20H,A0
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; ADDI OZPOS+20H,A0
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; MOVK 6,A4
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;STRNGOL
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; MOVE A14,-*A0,L
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; DSJS A4,STRNGOL ;ZERO OUT THE VELS & POSITIONS
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; SUBI 64,A0 ;BACK TO NORMAL
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MOVB @MYID,A14
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; JRZ REG
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; MOVI CLSNEUT|TYPTEXT|SUBSCOR,A14
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JRNZ REG2
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;REG
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MOVI CLSNEUT|TYPTEXT|SUBTXT,A14
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REG2
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MOVE A14,*A0(OID),W ;STUF A FINDABLE I.D.
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MOVE A9,A14
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MOVE A14,*A0(OXPOS),W
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SRL 16,A14
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MOVE A14,*A0(OYPOS),W ;STUFF POSITIONS
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MOVI 07FD1H,A14
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; MOVI 07FFEH,A14
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MOVE A14,*A0(OZPOS),W
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MOVE @WRLD,A2,W
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JRNZ NOADJST
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CALLA ADJSTWTL ;PUT US IN THE WORLD
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NOADJST:
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CALLA INSOBJ ;STUFF THIS SHEEEEEEET
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MMTM SP,A0,A2,A3,A4
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MOVE *A0(OYVAL),A2,L
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MOVE *A0(OXVAL),A3,L
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MOVE *A0(OFLAGS),A4
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CALLA GANISAG
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MOVE A2,*A0(OYVAL),L
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MOVE A3,*A0(OXVAL),L
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;
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;ADJUST ANI POINT
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* GANISAG - ADJUST CURRENT OBJECT IMAGE WITH RESPECT TO IT'S *
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* ANIMATION PNT. AND FLIP FLAGS *
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* NOTE: CALL ONLY AFTER INITIALIZING WITH STFOBJ, OR SOMETHING. *
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* A0 = PTR TO OBJECT BLOCK *
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* A2 = NEW OYVAL *
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* A3 = NEW OXVAL *
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* A4 = NEW FLAGS *
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* RETURNS *
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* A2 = ADJUSTED OYVAL *
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* A3 = ADJUSTED OXVAL *
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MMFM SP,A0,A2,A3,A4
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JRUC STRNGDUN
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*SIMPLY DMA THE SUCKER, HERE
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STRNQDMA
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MOVE A1,A10
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MOVE A5,A1 ;CONSTANT:PALETTE
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MOVE A4,A5 ;OFFSET:CONTROL
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MOVE A3,A4 ;SAG
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CLR A14
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MOVY A9,A14
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CLR A3
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MOVX A9,A3
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SRL 16,A6
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SUBXY A6,A3
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SUBXY A7,A14 ;MOVE TO CORRECT POSITION
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MOVY A14,A3 ;A3 = DAG
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CALLA DMAN
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MOVE A1,A5
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MOVE A10,A1
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STRNGDUN
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MOVE *A1(ISIZE),A6,W ;GET THE VISIBLE HORIZONTAL SIZE
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MMFM SP,A2,A3,A4,A10,A14
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ADDXY A6,A9 ;GET TO THE OTHER SIDE
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ADDXY A10,A9
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MOVE *SP+,A0,L
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JREQ STRINGR2 ;BR = NO SLEEP
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MMTM A12,A0,A4,A5,A14
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CALLA PRCSLP
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MMFM A12,A0,A4,A5,A14
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JRUC STRINGR2
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STRINGRX
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ADDK 8,A8 ;GET TO THE NEXT BYTE
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MMFM A12,A1,A4,A6,A14
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RETP
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**************************************************************************
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* *
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* STRNGLEN - RETURNS THE LENGTH, IN PIXELS, OF A GIVEN STRING *
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* A8 = PTR TO STRING *
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* A10 = [Y,X] SPACING OF STRING *
|
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* A11 = PTR TO FONT TABLE *
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* RETURNS: *
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* A7 = LENGTH OF STRING *
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* Z BIT SET IF LENGTH IS ZERO *
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* *
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**************************************************************************
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STRNGLEN
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MMTM SP,A8,A14
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CLR A14
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MOVB *A8,A7
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SLL 24,A7
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SRL 24,A7 ;MAKE SURE WE'RE POSITIVE
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JREQ STRNLENX
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STRNLEN
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ADDK 8,A8 ;POINT TO NEXT
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CMPI 20H,A7
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JRNE STRNLEN1 ;BR = IT'S NOT A SPACE
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MOVK 5,A7 ;HARD CODE A SPACE
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JRUC STRNLEN2
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STRNLEN1
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SUBI 21H,A7 ;GET A BASE
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SLL 5,A7
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ADD A11,A7 ;A7 = PTR TO CORRECT CHARACTER HEADER
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MOVE *A7,A7,L
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MOVE *A7(ISIZE),A7,W ;GET THE ACTUAL X LENGTH
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STRNLEN2
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ADDXY A7,A14 ;ADD DIGIT LENGTH
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||
MOVX A10,A7
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ADDXY A7,A14 ;ADD SPACE LENGTH
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||
MOVB *A8,A7
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SLL 24,A7
|
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SRL 24,A7 ;MAKE SURE WE'RE POSITIVE
|
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JRNE STRNLEN ;NEXT CHARACTER
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STRNLENX
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MOVE A14,A7 ;PASS RETURN VALUE IN A7
|
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MMFM SP,A8,A14
|
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RETS
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||
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|
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**************************************************************************
|
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* *
|
||
* OBJECT BLOCK INITIALIZATION ROUTINES *
|
||
* *
|
||
**************************************************************************
|
||
**************************************************************************
|
||
* *
|
||
* GPALOBJ - GET A PALETTE AND AN OBJECT BLOCK *
|
||
* A14 = PTR TO PLAYER INITIALIZATION TABLE. *
|
||
* RETURNS: *
|
||
* A0 = PTR TO OBJECT *
|
||
* Z BIT SET = FAILURE,A0 = 0 *
|
||
* *
|
||
**************************************************************************
|
||
GPALOBJ
|
||
CALLA GETOBJ
|
||
JRZ GPALOBJX ;OBJECT BLOCK FAILURE
|
||
CALLA INITPAL ;GET THE PALETTE
|
||
; JRNZ GPALOBJX
|
||
; CLR A0
|
||
; MOVE A0,@CURPAL,W
|
||
; CALLA FREEOBJ
|
||
; CLR A0
|
||
GPALOBJX
|
||
RETS
|
||
**************************************************************************
|
||
* *
|
||
* GBPALOBJ - GET A BACKGROUND PALETTE AND AN OBJECT BLOCK *
|
||
* A14 = PTR TO PLAYER INITIALIZATION TABLE. *
|
||
* RETURNS: *
|
||
* A0 = PTR TO OBJECT *
|
||
* Z BIT SET = FAILURE,A0 = 0 *
|
||
* *
|
||
**************************************************************************
|
||
GBPALOBJ
|
||
CALLA GETOBJ
|
||
JRZ GBPALOX ;OBJECT BLOCK FAILURE
|
||
CALLA INITBPAL ;GET THE BACKGROUND PALETTE
|
||
JRNZ GBPALOX
|
||
CALLA FREEOBJ
|
||
CLR A0
|
||
GBPALOX
|
||
RETS
|
||
|
||
*
|
||
*SHVELCPY - COPY VELOCITIES TO SHADOW (IF ANY)
|
||
*A8=OBJECT
|
||
*
|
||
;SHVELCPY:
|
||
; MMTM SP,A0,A1
|
||
; MOVE *A8(OSHAD),A0,L
|
||
; JREQ SHVLCPX
|
||
; MOVE *A8(OXVEL),*A0(OXVEL),L
|
||
;** MOVE *A8(OZVEL),A1,L
|
||
; MOVE *A8(OYVEL),A1,L
|
||
;** MOVE A1,*A0(OZVEL),L
|
||
; MOVE A1,*A0(OYVEL),L
|
||
;SHVLCPX:
|
||
; MMFM SP,A0,A1
|
||
; RETS
|
||
|
||
*
|
||
*SHVELFLP - COPY SHADOW VELOCITY AND FLIP HIM
|
||
*A8=OBJECT
|
||
*A3=OXVEL
|
||
;SHVELFLP:
|
||
; CALLR SHVELCPY
|
||
; MOVE *A8(OXVEL+>10),A14,W ;TEST X VELOCITY
|
||
*FLIPDUDE
|
||
*A8=OBJECT, N=SIGN OF XVEL
|
||
FLP:
|
||
JAN YFLP
|
||
JAUC NOYFLP
|
||
|
||
**************************************************************************
|
||
* *
|
||
* OBJOFF - TURN AN OBJECT "OFF" I.E. SET DMA OUTPUT TO 0 *
|
||
* A0 = PTR TO OBJECT BLOCK *
|
||
* *
|
||
**************************************************************************
|
||
OBJOFF
|
||
PUSH A4
|
||
MOVE *A0(OFLAGS),A4,W
|
||
SRL 4,A4
|
||
SLL 4,A4
|
||
MOVE A4,*A0(OFLAGS),W
|
||
PULL A4
|
||
RETS
|
||
**************************************************************************
|
||
* *
|
||
* OBJON - TURN AN OBJECT "ON" I.E. SET DMA OUTPUT TO WRITE <> 0 *
|
||
* A0 = PTR TO OBJECT BLOCK *
|
||
* *
|
||
**************************************************************************
|
||
OBJON
|
||
PUSH A4
|
||
MOVE *A0(OFLAGS),A4,W
|
||
SRL 4,A4
|
||
SLL 4,A4
|
||
ADDK 2,A4
|
||
MOVE A4,*A0(OFLAGS),W
|
||
PULL A4
|
||
RETS
|
||
|
||
**************************************************************************
|
||
* *
|
||
* Z POSITIONING ROUTINES *
|
||
* *
|
||
**************************************************************************
|
||
|
||
*
|
||
*XZCHK
|
||
*CALLING PARAMETERS:
|
||
*A8=OBJECT SEEKING
|
||
*A0=OBJECT SEEKED
|
||
*A5=X RANGE
|
||
*A6=Z RANGE
|
||
*RETURNS:
|
||
*CARRY SET IF HE IS CLOSE ENOUGH
|
||
*A1=DELTA X
|
||
*A2=DELTA Z
|
||
*A3=ABS DELTA X
|
||
*A4=ABS DELTA Z
|
||
;XZCHK:
|
||
; MOVE A0,A4
|
||
; CALLR GETANIX ;GET X ANIMATION POINT
|
||
; MOVE A0,A3
|
||
; SWAP A4,A8
|
||
; CALLR GETANIX
|
||
; MOVE A0,A1
|
||
; MOVE A8,A0
|
||
; MOVE A4,A8
|
||
; MOVE *A8(OZPOS),A4,W
|
||
; MOVE *A0(OZPOS),A2,W
|
||
; SUB A4,A2
|
||
; SUB A3,A1
|
||
; MOVE A1,A3
|
||
; MOVE A2,A4
|
||
; ABS A3
|
||
; ABS A4
|
||
; CMP A5,A3
|
||
; JRNC XZCHKX
|
||
; CMP A6,A4
|
||
;XZCHKX:
|
||
; RETS
|
||
|
||
**************************************************************************
|
||
* *
|
||
* CLRPDATA - CLEAR THE PDATA AREA OF A PROCESS BLOCK *
|
||
* A13 = PTR TO PROCESS BLOCK *
|
||
* *
|
||
**************************************************************************
|
||
;CLRPDATA
|
||
; MMTM SP,A1,A6,A14
|
||
; MOVE A13,A14
|
||
; CLR A1
|
||
; ADDI PDATA,A14
|
||
; MOVI (PSDATA-PDATA)/16,A6
|
||
;CLRSHL
|
||
; SRL 1,A6
|
||
; JRNC CLRPDL
|
||
; MOVE A1,*A14+,W ;STUFF THE ODD WORD
|
||
;CLRPDL
|
||
; MOVE A1,*A14+,L
|
||
; DSJS A6,CLRPDL
|
||
; MMFM SP,A1,A6,A14
|
||
; RETS
|
||
**************************************************************************
|
||
* *
|
||
* DFRMGRND - RETURNS THE DISTANCE FROM THE BOTTOM OF *
|
||
* AN OBJECT TO THE "GROUND." *
|
||
* A8 = OBJECT BLOCK *
|
||
* RETURN(S) *
|
||
* A1 = DISTANCE FROM GROUND (16 BITS) *
|
||
* STATUS BITS SET ACCORDING TO THE SIGN OF A1 *
|
||
* NOTE: MAX ACCEPTABLE Y = +32K, MIN ACCEPTABLE Y = -32K *
|
||
* *
|
||
**************************************************************************
|
||
;ZORIGIN EQU 200 ;Y COORDINATE OF THE Z ORIGIN
|
||
;DFRMGRND
|
||
; PUSH A2
|
||
; MOVE *A8(OYPOS),A1,W
|
||
; MOVE *A8(OSIZEY),A2,W
|
||
; ADD A1,A2 ;A2 = BOTTOM Y
|
||
; MOVE *A8(OZPOS),A1,W
|
||
; SUB A2,A1
|
||
; ADDI ZORIGIN,A1
|
||
; MMFM SP,A2
|
||
; RETS
|
||
|
||
**************************************************************************
|
||
* *
|
||
* GET BOTTOM Y OF AN OBJECT *
|
||
* A8 = OBJECT BLOCK PTR *
|
||
* RETURN(S) *
|
||
* A1 = 16 BIT BOTTOM Y IN LSW *
|
||
* STATUS SET ACCORDING TO THE BOTTOM Y *
|
||
*NOTE: MAKE SURE OBLOCK IS INIT'D WITH GSAGOF BEFORE CALLING *
|
||
* *
|
||
**************************************************************************
|
||
;GETBOTY
|
||
; PUSH A2
|
||
; MOVE *A8(OYPOS),A1,W ;GET Y POSITION
|
||
; MOVE *A8(OSIZEY),A2,W ;GET THE CURRENT SIZE
|
||
; ADD A2,A1 ;A1 = BOTTOM Y
|
||
; MMFM SP,A2
|
||
; RETS
|
||
|
||
**************************************************************************
|
||
* *
|
||
* GETCPNT - RETURNS THE CENTER XY POSITION OF A GIVEN IMAGE *
|
||
* A8 = IMAGE OBLOCK *
|
||
* RETURN(S) *
|
||
* A1 = CENTER Y:CENTER X *
|
||
* *
|
||
**************************************************************************
|
||
GETCPNT MOVE A0,-*SP,L
|
||
MOVE *A8(OYPOS),A0,W
|
||
SLL 16,A0
|
||
MOVE *A8(OXPOS),A1,W
|
||
MOVX A1,A0
|
||
MOVE *A8(OSIZE),A1,L
|
||
CALLR GETCENT
|
||
SLL 16,A0
|
||
MOVY A0,A1
|
||
MOVE *SP+,A0,L
|
||
RETS
|
||
|
||
**************************************************************************
|
||
* *
|
||
* GETCENT - RETURNS THE CENTER POINT OF A BOX *
|
||
* A0 = UPPER LEFT Y:UPPER LEFT X *
|
||
* A1 = Y_SIZE:X_SIZE *
|
||
* RETURN(S) *
|
||
* A0 = CENTER Y(LSW) *
|
||
* A1 = CENTER X(LSW) *
|
||
* *
|
||
**************************************************************************
|
||
GETCENT MOVE A2,-*SP,L
|
||
MOVY A1,A2
|
||
SRL 17,A2 ;YSIZE/2
|
||
SLL 16,A2 ;BACK TO Y HALF
|
||
SLL 16,A1 ;CLEAR Y
|
||
SRL 17,A1 ;XSIZE/2
|
||
MOVY A2,A1
|
||
ADDXY A1,A0 ;OFFSET TO CENTER
|
||
CLR A1
|
||
MOVX A0,A1 ;RETURN THESE IN USEFUL POSITIONS
|
||
SRL 16,A0
|
||
MOVE *SP+,A2,L
|
||
RETS
|
||
|
||
**************************************************************************
|
||
* *
|
||
* GETSCRRX - THE THE WORLD X COORDINATE OF THE SCREEN RIGHT END *
|
||
* RETURNS *
|
||
* A0 = SCREEN RIGHT X, 32 BITS *
|
||
* *
|
||
**************************************************************************
|
||
;GETSCRRX
|
||
; PUSH A2
|
||
; MOVE @SCRNLR,A0,W
|
||
; MOVE @WORLDTL,A2,W
|
||
; ADD A2,A0 ;GET SCREEN LOWER RT.
|
||
; SLL 16,A0
|
||
; PULL A2
|
||
; RETS
|
||
|
||
*
|
||
*GETANIX - GET ANIMATION POINT X COORD
|
||
*CALLING PARMS: A8=OBJECT
|
||
*RETURNS A0=16 BIT WORLD COORD OF UPPER LEFT
|
||
*
|
||
GETANIX:
|
||
MMTM SP,A1,A2
|
||
MOVE *A8(OIMG),A1,L
|
||
MOVE *A1(IANIOFF),A2,W
|
||
MOVE *A8(OFLAGS),A0,W
|
||
BTST B_FLIPH,A0
|
||
JRZ GETAX1
|
||
MOVE *A1(ISIZE),A0,W
|
||
SUB A2,A0
|
||
DEC A0
|
||
MOVE A0,A2
|
||
GETAX1:
|
||
MOVE *A8(OXPOS),A0,W
|
||
ADD A2,A0
|
||
MMFM SP,A1,A2
|
||
RETS
|
||
|
||
**************************************************************************
|
||
* *
|
||
* CLRWORLD - CLEAR ALL WORLD COORDINATES AND SCROLL VELOCITIES. *
|
||
* *
|
||
**************************************************************************
|
||
CLRWORLD
|
||
PUSH A0
|
||
CLR A0
|
||
MOVE A0,@SCROLLX,L ;X SCROLL VALUE
|
||
MOVE A0,@SCROLLY,L ;Y SCROLL VALUE
|
||
MOVE A0,@WORLDTLX,L ;TOP LEFT X SCREEN COORD (WORLD)
|
||
MOVE A0,@WORLDTLY,L ;TOP LEFT Y SCREEN COORD (WORLD)
|
||
MOVE A0,@WORLDTL,L
|
||
; MOVE A0,@BAK2TLY,L ;TOP LFT Y SLOW SCROLL BACKGROUND
|
||
; MOVE A0,@BAK2TLX,L ;TOP LFT X SLOW SCROLL BACKGROUND
|
||
MOVI SCRNST,A0
|
||
MOVE A0,@SCRNTL,L
|
||
MOVI SCRNEND,A0
|
||
MOVE A0,@SCRNLR,L
|
||
PULL A0
|
||
RETS
|
||
|
||
**************************************************************************
|
||
* *
|
||
* GETSCRBY - THE THE WORLD Y COORDINATE OF THE SCREEN BOTTOM *
|
||
* RETURNS *
|
||
* A0 = SCREEN BOTTOM Y *
|
||
* *
|
||
**************************************************************************
|
||
;GETSCRBY
|
||
; PUSH A2
|
||
; MOVE @SCRNLR+16,A0,W
|
||
; MOVE @WORLDTL+16,A2,W
|
||
; ADD A2,A0 ;GET SCREEN BOTTOM Y
|
||
; SLL 16,A0 ;MAKE IT A 32 BIT VALUE
|
||
; PULL A2
|
||
; RETS
|
||
|
||
**************************************************************************
|
||
* *
|
||
* MYOINIT - INITIALIZE SUPPLEMENTAL OBJECT LIST HEADERS *
|
||
* *
|
||
**************************************************************************
|
||
MYOINIT
|
||
MMTM SP,A0,A1,A2,A3,A4,A5
|
||
PUSHST
|
||
|
||
DINT
|
||
MOVE @INTENB,A0,W
|
||
ANDNI X1E,A0 ;NO MORE DMA INTERRUPTS
|
||
MOVE A0,@INTENB,W
|
||
POPST
|
||
CLR A0
|
||
MOVE A0,@GAMERASE
|
||
CALLA AUTOEOFF ;DISABLE AUTOERASE
|
||
CALLR DMAWAIT ;WAIT ON DMA
|
||
MOVI ERASECOL,A1
|
||
SLL 16,A1 ;CONSTANT:PALETTE
|
||
MOVI [2,511],A2 ;HEIGHT:WIDTH
|
||
MOVI [510,0],A3 ;DAG
|
||
MOVI 2000000H,A4 ;SAG
|
||
MOVI DMAREGS,A0
|
||
MMTM A0,A1,A2,A3,A4 ;STORE TO LAST 2 LINES OF BITMAP
|
||
CLR A5 ;STUFF OFFSET
|
||
MOVE A5,-*A0,W
|
||
MOVI DMACAL,A5 ;CONTROL &
|
||
MOVE A5,-*A0,W ;GO!
|
||
MMFM SP,A0,A1,A2,A3,A4,A5
|
||
JAUC OINIT
|
||
*************************************************************************
|
||
* *
|
||
* ADDSUPP - ADD OBJECT TO A SUPPLEMENTAL LIST *
|
||
* A0 = PTR TO OBJECT *
|
||
* A1 = MEMORY LOCATION OF SUPPLEMENTAL LIST HEADER *
|
||
* *
|
||
**************************************************************************
|
||
;ADDSUPP
|
||
; MOVE *A1(0),*A0(OSLINK),L ;LINK SLIST TO THIS BLOCK
|
||
; MOVE A0,*A1,L ;NEW HEAD OF THE SLIST
|
||
; RETS
|
||
|
||
**************************************************************************
|
||
* *
|
||
* DELSBOBJ - DELETE OBJECT FROM SUPPLEMENTAL BACKGROUND LIST *
|
||
* A0 = PTR TO OBJECT *
|
||
* *
|
||
**************************************************************************
|
||
;DELSBOBJ
|
||
; PUSH A1
|
||
; MOVI BACKSLST,A1
|
||
; CALLR DELSUPP
|
||
; PULL A1
|
||
; RETS
|
||
|
||
**************************************************************************
|
||
* *
|
||
* DELSUPP - DELETE OBJECT FROM THE SUPPLEMENTAL LIST *
|
||
* A0 = PTR TO OBJECT *
|
||
* A1 = MEMORY LOCATION OF SUPPLEMENTAL LIST HEADER *
|
||
* *
|
||
**************************************************************************
|
||
;DELSUPP
|
||
; MMTM SP,A1,A2
|
||
; MOVE A1,A2
|
||
; MOVE *A1,A1,L ;SPECIAL CASE THE HEADER
|
||
; JRNZ DELSCHK1
|
||
; LOCKUP
|
||
; JRUC DELSX
|
||
;DELSCHK1
|
||
; CMP A1,A0
|
||
; JRNE DELSLUP
|
||
; MOVE *A1(OSLINK),*A2(0),L ;LINK AROUND THIS GUY
|
||
;DELSX
|
||
; MMFM SP,A1,A2
|
||
; RETS
|
||
;
|
||
;DELSLUP ;
|
||
; MOVE A1,A2 ;SAVE PREVIOUS
|
||
; MOVE *A1(OSLINK),A1,L ;SEARCHING FOR THE ELEMENT IN THE LIST
|
||
; JRNZ DELSCHK2
|
||
; LOCKUP
|
||
; JRUC DELSX
|
||
;DELSCHK2
|
||
; CMP A1,A0
|
||
; JRNE DELSLUP ;NOT FOUND KEEP LOOKING
|
||
;
|
||
; MOVE *A1(OSLINK),*A2(OSLINK),L ;LINK AROUND THIS GUY
|
||
;
|
||
; MMFM SP,A1,A2
|
||
; RETS
|
||
|
||
**************************************************************************
|
||
* *
|
||
* ISSUPP - IS AN OBJECT ON A SUPPLEMENTAL LIST *
|
||
* A0 = PTR TO OBJECT *
|
||
* A1 = MEMORY LOCATION OF SUPPLEMENTAL LIST HEADER *
|
||
* RETURNS: *
|
||
* Z BIT SET = NOT ON *
|
||
* Z BIT CLR = IS ON *
|
||
* *
|
||
**************************************************************************
|
||
;ISSUPP
|
||
; PUSH A1
|
||
; MOVE *A1,A1,L ;SPECIAL CASE THE HEADER
|
||
; JREQ ISEND
|
||
; CMP A1,A0
|
||
; JRNE ISSEARCH
|
||
;ISFOUND
|
||
; MOVE A1,A1 ;SET Z BIT
|
||
;ISEND
|
||
; PULL A1
|
||
; RETS
|
||
;ISSEARCH
|
||
; MOVE *A1(OSLINK),A1,L ;SEARCHING FOR THE ELEMENT IN THE LIST
|
||
; JREQ ISEND ;ELEMENT DOES NOT EXIST
|
||
; CMP A1,A0
|
||
; JRNE ISSEARCH ;NOT FOUND KEEP LOOKING
|
||
; JRUC ISFOUND ;FOUND RETURN
|
||
;
|
||
**************************************************************************
|
||
* *
|
||
* ISSUPPID - IS AN OBJECT ON A SUPPLEMENTAL LIST(SEARCH BY OBJECT I.D.) *
|
||
* A0 = OBJECT I.D. *
|
||
* A1 = MEMORY LOCATION OF SUPPLEMENTAL LIST HEADER *
|
||
* RETURNS: *
|
||
* Z BIT SET = NOT ON *
|
||
* A1 = ZERO *
|
||
* Z BIT CLR = IS ON *
|
||
* A1 = PTR TO OBJECT *
|
||
* *
|
||
**************************************************************************
|
||
;ISSUPPID
|
||
; PUSH A2
|
||
; MOVE *A1,A1,L ;SPECIAL CASE THE HEADER
|
||
; JREQ ISENDID
|
||
; MOVE *A1(OID),A2,W
|
||
; CMP A2,A0
|
||
; JRNE ISSRCHID
|
||
;ISFNDID
|
||
; MOVE A1,A1 ;SET Z BIT
|
||
;ISENDID
|
||
; PULL A2
|
||
; RETS
|
||
;ISSRCHID
|
||
; MOVE *A1(OSLINK),A1,L ;SEARCHING FOR THE ELEMENT IN THE LIST
|
||
; JREQ ISENDID ;ELEMENT DOES NOT EXIST
|
||
; MOVE *A1(OID),A2,W
|
||
; CMP A2,A0
|
||
; JRNE ISSRCHID ;NOT FOUND KEEP LOOKING
|
||
; JRUC ISFNDID ;FOUND RETURN
|
||
|
||
**************************************************************************
|
||
* *
|
||
* CNTSUPP - COUNT THE NUMBER OF OBJECTS ON GIVEN SUPPLEMENTAL LIST. *
|
||
* A1 = SUPPLEMENTAL LIST *
|
||
* RETURNS: *
|
||
* A0 = OBJECT CNT *
|
||
* *
|
||
**************************************************************************
|
||
;CNTSUPP
|
||
; PUSH A1
|
||
; CLR A0
|
||
; MOVE *A1,A1,L
|
||
; JRZ CNTSUPPX
|
||
;CNTSUPPL
|
||
; INC A0
|
||
; CMPI NOBJ,A0
|
||
; JRHS CNTSUPPX ;WE'VE MAXED, SOMETHING IS WRONG
|
||
; MOVE *A1(OSLINK),A1,L
|
||
; JRNZ CNTSUPPL
|
||
;CNTSUPPX
|
||
; PULL A1
|
||
; RETS
|
||
|
||
**************************************************************************
|
||
* *
|
||
* RANDOM - GENERATE A RANDOM NUMBER *
|
||
* RETURNS: *
|
||
* A0 = 32 BIT RANDOM # *
|
||
* *
|
||
**************************************************************************
|
||
RANDOM: PUSH A1
|
||
MOVE @RAND,A0,L
|
||
SLA 1,A0
|
||
JRV RND2
|
||
ORI 2,A0
|
||
RND2: MOVE A0,@RAND,L
|
||
CLR A1
|
||
ADDC A1,A0 ;GET LAST BIT BACK TO MAKE 32
|
||
MOVE @HCOUNT,A1
|
||
RL A1,A0 ;RANDOM ROTATION
|
||
MOVE A0,A0 ;SET STATUS BITS
|
||
MMFM SP,A1
|
||
RETS
|
||
|
||
**************************************************************************
|
||
* *
|
||
* RANDU - GENERATE A UNIFORMLY DISTRIBUTED RANDOM # BETWEEN 1 AND [A0] *
|
||
* A0 = RANGE INPUT *
|
||
* RETURNS: *
|
||
* A0 = RANDOM # *
|
||
* *
|
||
**************************************************************************
|
||
RANDU: PUSH A1
|
||
MOVE A0,A1
|
||
CALLR RANDOM
|
||
MPYU A1,A0
|
||
INC A0
|
||
MMFM SP,A1
|
||
RETS
|
||
*
|
||
*GET SIGNED RANDOM # IN RANGE +/- A0
|
||
*CALLING PARAMETERS: A0
|
||
*RETURNS A0
|
||
*
|
||
SRAND:
|
||
MMTM SP,A1
|
||
MOVE A0,A1
|
||
SLL 1,A0
|
||
CALLA RANDU
|
||
SUB A1,A0
|
||
MMFM SP,A1
|
||
RETS
|
||
**************************************************************************
|
||
* *
|
||
* RANGRAND - GENERATE A RANDOM NUMBER IN A GIVEN RANGE. *
|
||
* B0 = LOWER BOUND *
|
||
* B1 = UPPER BOUND *
|
||
* RETURNS *
|
||
* A0 = RANDOM # *
|
||
* *
|
||
**************************************************************************
|
||
RANGRAND
|
||
PUSH A1
|
||
PUSH B1
|
||
SUB B0,B1 ;NORMALIZE THE RANGE
|
||
MOVE B1,A0 ;SET RANGE FOR RANDU
|
||
CALLR RANDU
|
||
MOVE B0,A1
|
||
ADD A1,A0
|
||
PULL B1
|
||
PULL A1
|
||
RETS
|
||
|
||
*
|
||
*RANDPER - RANDOM % ROUTINE
|
||
*CALLING PARAMETERS:
|
||
*A0=PROBABILITY OF EVENT (0-1000) P(A0=1000) = 1; P(A0=1) = 1/1000.
|
||
*RETURNS CS IF PROBABILITY IS TRUE, CC FOR FALSE
|
||
*RETURNS A0 = ACTUAL RANDOM # 0-999
|
||
RANDPER:
|
||
MMTM SP,A1,A2
|
||
MOVE A0,A2
|
||
CALLA RANDOM
|
||
MOVI 1000,A1
|
||
MPYU A1,A0
|
||
CMP A2,A0
|
||
MMFM SP,A1,A2
|
||
RETS
|
||
|
||
**************************************************************************
|
||
* *
|
||
* FILLAREA - FILL A GIVEN SQUARE AREA ON THE SCREEN WITH A COLOR *
|
||
* A1 = [COLOR,PALETTE] *
|
||
* A3 = DAG OF AREA [YPOS,XPOS] *
|
||
* A4 = [Y,X] SIZE OF AREA *
|
||
* *
|
||
**************************************************************************
|
||
FILLAREA
|
||
MMTM SP,A1,A2,A4,A5
|
||
JRUC AREACON
|
||
**************************************************************************
|
||
* *
|
||
* BLNKAREA - BLANK A GIVEN SQUARE AREA ON THE SCREEN *
|
||
* A3 = DAG OF AREA [YPOS,XPOS] *
|
||
* A4 = [Y,X] SIZE OF AREA *
|
||
* *
|
||
**************************************************************************
|
||
BLNKAREA
|
||
MMTM SP,A1,A2,A4,A5
|
||
CLR A1 ;CONSTANT 0:PALETTE 0
|
||
AREACON
|
||
MOVE A4,A2
|
||
MOVI 2000000H,A4 ;SOMEWHERE IN IMAGE ROM
|
||
MOVI DMACAL,A5
|
||
CALLR DMAN
|
||
MMFM SP,A1,A2,A4,A5
|
||
RETS
|
||
|
||
**************************************************************************
|
||
* *
|
||
* PFRAME - GET NEXT FRAME FROM ANIMATION LIST *
|
||
* A8 = POINTER TO OBJECT BLOCK *
|
||
* A11 = POINTER TO NEXT FRAME IN THE ANIMATION LIST *
|
||
* RETURN(S) *
|
||
* A5 = TICKS FOR THIS FRAME *
|
||
* C BIT SET(JXC) = END OF LIST WAS HIT *
|
||
* N BIT SET(JXN) = SPECIAL FRAME ENCOUNTERED *
|
||
* *
|
||
**************************************************************************
|
||
;PFRAME MMTM SP,A1,A4
|
||
; MOVE *A11+,A1,L ;LOAD NEXT FRAME
|
||
; JRNE PFRAME1 ;NOT THE END OF THE LIST
|
||
;
|
||
; SETC ;SET CARRY FLAG
|
||
; JRUC PFRAMEX
|
||
;
|
||
;PFRAME1
|
||
; MOVE *A8(OFLAGS),A4,W
|
||
; CALLA ANI ;SETUP NEW FRAME
|
||
;PFRAME2
|
||
; MOVE *A11+,A5,W ;LOAD SLEEP TICKS PER FRAME
|
||
; CLRC
|
||
;
|
||
;PFRAMEX MMFM SP,A1,A4
|
||
; RETS
|
||
|
||
**************************************************************************
|
||
* *
|
||
* OBJECT VELOCITY STOP ROUTINES *
|
||
* *
|
||
**************************************************************************
|
||
*
|
||
*PSTOP - STOP AN OBJECT, A8:OBJECT BLOCK PTR
|
||
PSTOP CALLR PSTOPX
|
||
JRUC PSTOPY
|
||
*
|
||
*PSTOPX - CLEAR AN OBJECTS X VELOCITY, A8:OBJECT BLOCK PTR
|
||
PSTOPX MMTM SP,A0,A1
|
||
CLR A1
|
||
MOVE A1,*A8(OXVEL),L
|
||
; MOVE *A8(OSHAD),A0,L
|
||
; JREQ PSTOPXX
|
||
; MOVE A1,*A0(OXVEL),L ;STOP THE SHADOW
|
||
;PSTOPXX
|
||
MMFM SP,A0,A1
|
||
RETS
|
||
|
||
*
|
||
*PSTOPY - CLEAR AN OBJECTS Y VELOCITY, A8:OBJECT BLOCK PTR
|
||
PSTOPY MMTM SP,A0,A1
|
||
CLR A1
|
||
MOVE A1,*A8(OYVEL),L
|
||
; MOVE *A8(OSHAD),A0,L
|
||
; JREQ PSTOPYX
|
||
; MOVE A1,*A0(OYVEL),L ;STOP THE SHADOW
|
||
;PSTOPYX
|
||
MMFM SP,A0,A1
|
||
RETS
|
||
|
||
*
|
||
*YFLP - SET OBJECT Y-FLIP, A8:OBJECT BLOCK PTR
|
||
YFLP MMTM SP,A1,A4
|
||
MOVE *A8(OFLAGS),A4
|
||
ORI M_FLIPH,A4
|
||
JRUC STUFLAGS
|
||
*
|
||
*NOYFLP - CLEAR OBJECT Y-FLIP, A8:OBJECT BLOCK PTR
|
||
NOYFLP MMTM SP,A1,A4
|
||
MOVE *A8(OFLAGS),A4
|
||
ANDNI M_FLIPH,A4
|
||
STUFLAGS
|
||
MOVE *A8(OIMG),A1,L ;GET THE CURRENT IMAGE POINTER
|
||
CALLA ANI ;SETUP THE "NEW" IMAGE
|
||
UNFLPD MMFM SP,A1,A4
|
||
RETS
|
||
|
||
**************************************************************************
|
||
* *
|
||
* SYNCUP - SYNCHRONIZE WITH THE NEXT DISPLAY INTERRUPT, I.E. *
|
||
* WAIT UNTIL THE NEXT INTERRUPT IS FINISHED BEFORE RETURNING *
|
||
* *
|
||
**************************************************************************
|
||
SYNCUP MOVE A0,-*SP,L
|
||
CLR A0
|
||
MOVE A0,@INTSYNC0,L ;CLEAR HALF SCREEN SYNC
|
||
|
||
SYNCUP1 MOVE @INTSYNC0,A0,L
|
||
JREQ SYNCUP1 ;END HASN'T HIT YET
|
||
MOVE *SP+,A0,L
|
||
RETS
|
||
|
||
**************************************************************************
|
||
* *
|
||
* SYNCHALF - SYNCHRONIZE WITH THE HALF SCREEN INTERRUPT *
|
||
* *
|
||
**************************************************************************
|
||
SYNCHALF
|
||
MMTM SP,A0,A1
|
||
MOVI INTSYNC0,A1
|
||
JRUC SYNCSD
|
||
**************************************************************************
|
||
* *
|
||
* SYNCFULL - SYNCHRONIZE WITH THE FULL SCREEN INTERRUPT *
|
||
* *
|
||
**************************************************************************
|
||
SYNCFULL
|
||
MMTM SP,A0,A1
|
||
MOVI INTSYNC1,A1
|
||
|
||
SYNCSD CLR A0
|
||
MOVE A0,*A1,W ;CLEAR HALF SCREEN SYNC
|
||
|
||
SYNCSD1 MOVE *A1,A0,W
|
||
JREQ SYNCSD1 ;END HASN'T HIT YET
|
||
MMFM SP,A0,A1
|
||
RETS
|
||
**************************************************************************
|
||
* *
|
||
* DTIME - USED TO DMA AN IMAGE *
|
||
* A1 = [CONSTANT COLOR,PALETTE(STUFFED IN DTIME)] *
|
||
* A3 = DAG [Y,X] *
|
||
* A5 = [OFFSET,CONTROL] *
|
||
* A14 = ADDRESS OF IMAGE HEADER *
|
||
* *
|
||
**************************************************************************
|
||
DTIME:
|
||
MMTM SP,A0,A1
|
||
MOVE *A14(ICMAP),A0,L ;GET THE PALETTE
|
||
CALLA FINDPAL ;GET THE CORRECT COLOR MAP #
|
||
JRNZ DTIME1 ;BR = PALETTE WAS FOUND
|
||
CLR A0 ;DEFAULT TO FIXED PALETTE
|
||
DTIME1
|
||
MOVX A0,A1
|
||
CALLA QDMA ;QUEUE THIS SUCKAH
|
||
MMFM SP,A0,A1
|
||
RETS
|
||
**************************************************************************
|
||
* *
|
||
* DMAN - MANUAL DMA, ALL REGS MUST BE SETUP UPON CALLING *
|
||
* *
|
||
**************************************************************************
|
||
DMAN JAUC QDMAN
|
||
**************************************************************************
|
||
* *
|
||
* DMAWAIT - WAIT ON THE DMA BUSY BIT TO CLEAR *
|
||
* *
|
||
**************************************************************************
|
||
DMAWAIT
|
||
PUSH A0
|
||
DMAWAITL
|
||
MOVE @DMACTRL,A0,W ;DMA BUSY?
|
||
JRN DMAWAITL ;BR = YES
|
||
PULL A0
|
||
RETS
|
||
**************************************************************************
|
||
* *
|
||
* DMAQWAIT - WAIT FOR DMA QUEUES TO EMPTY, THEN WAIT FOR DMA TO FINISH *
|
||
* THE LAST ONE. TURN DISPLAYON OFF. *
|
||
* *
|
||
**************************************************************************
|
||
DMAQWAIT
|
||
MMTM SP,A0,A1
|
||
MOVE @DISPLAYON,A1
|
||
CLR A0
|
||
MOVE A0,@DISPLAYON,W ;MAKE SURE DISPLAY IS OFF
|
||
DMAQWT1
|
||
MOVE @TOPQ0CNT,A0,W
|
||
JRNE DMAQWT1
|
||
MOVE @TOPQ1CNT,A0,W
|
||
JRNE DMAQWT1
|
||
MOVE @BOTQ0CNT,A0,W
|
||
JRNE DMAQWT1
|
||
MOVE @BOTQ1CNT,A0,W
|
||
JRNE DMAQWT1
|
||
DMAQWT2
|
||
MOVE B13,B13
|
||
JRNZ DMAQWT2
|
||
CALLR DMAWAIT
|
||
MOVE A1,@DISPLAYON
|
||
MMFM SP,A0,A1
|
||
RETS
|
||
|
||
**************************************************************************
|
||
;* DMAQWAIT - WAIT FOR DMA QUEUES TO EMPTY, THEN WAIT FOR DMA TO FINISH *
|
||
;* THE LAST ONE. *
|
||
;DMAQWAIT
|
||
; mmtm SP,A0,A1
|
||
; movi 25000,A1
|
||
;DMAQWT1
|
||
; dsjs A1,QWTX
|
||
; MOVE @TOPQ0CNT,A0,W
|
||
; JRNE DMAQWT1
|
||
; MOVE @TOPQ1CNT,A0,W
|
||
; JRNE DMAQWT1
|
||
; MOVE @BOTQ0CNT,A0,W
|
||
; JRNE DMAQWT1
|
||
; MOVE @BOTQ1CNT,A0,W
|
||
; JRNE DMAQWT1
|
||
; mmfm SP,A0,A1
|
||
;DMAQWT2
|
||
; MOVE B13,B13
|
||
; JRZ DMAWAIT
|
||
; JRUC DMAQWT2
|
||
;QWTX:
|
||
; mmfm SP,A0,A1
|
||
; clr B13
|
||
; rets
|
||
**************************************************************************
|
||
|
||
|
||
**************************************************************************
|
||
* DMAHALT - HALT THE DMA *
|
||
DMAHALT
|
||
PUSH A0
|
||
CLR A0
|
||
MOVE A0,@DMACTRL,W ;HALT THE DMA
|
||
PULL A0
|
||
RETS
|
||
**************************************************************************
|
||
*
|
||
*CMAPRS - RESET THE COLOR MAP SELECT
|
||
CMAPRS CLR A0
|
||
*CMAPSL - SELECT THE COLOR MAP(0-15 IN A0)
|
||
CMAPSL MOVE A1,-*SP,L
|
||
CALLA DMAWAIT
|
||
MOVE A0,@CMAPSEL
|
||
MOVE *SP+,A1,L
|
||
RETS
|
||
|
||
**************************************************************************
|
||
* *
|
||
* CRINIT - COLOR RAM INITIALIZATION, FIRST CLEAR ALL COLOR RAM, THEN *
|
||
* FILL WITH PALETTES. *
|
||
* *
|
||
**************************************************************************
|
||
CRINIT
|
||
MMTM SP,A0,A1,A2,A6
|
||
MOVI COLRAM,A1
|
||
CLR A0
|
||
MOVI 10000H,A6,L
|
||
*CLEAR ALL COLOR PALETTES
|
||
CRINIT1
|
||
MOVE A0,*A1+,L ;STUFF TWO WORDS AT A TIME
|
||
DSJS A6,CRINIT1
|
||
|
||
MMFM SP,A0,A1,A2,A6 ;<----
|
||
RETS ;<----
|
||
|
||
**************************************************************************
|
||
* *
|
||
* CRLOAD - LOAD COLOR RAM FROM A ROM TABLE *
|
||
* A1 = START OF ROM TABLE *
|
||
* A2 = COLOR RAM START ADDRESS *
|
||
* A6 = PALETTE COUNT *
|
||
* *
|
||
**************************************************************************
|
||
CRLOAD
|
||
MMTM SP,A0,A1,A2
|
||
CRLOAD1
|
||
MOVE *A1+,A0,W ;GRAB FIRST COLOR FROM THIS TABLE
|
||
JRN CRLOAD4 ;BR = NULL PALETTE
|
||
CRLOAD3
|
||
MOVE A0,*A2,W ;STUFF COLOR
|
||
MOVE *A1+,A0,W ;GRAB NEXT COLOR FROM THIS TABLE
|
||
JRN CRLOAD4 ;BR = NEXT PALETTE
|
||
ADDK 16,A2 ;INC THIS WAY SO WE DON'T OVERRUN PALETTES
|
||
JRUC CRLOAD3
|
||
|
||
CRLOAD4
|
||
ADDI 1000H,A2 ;NEXT PALETTE
|
||
SRL 12,A2
|
||
SLL 12,A2 ;MASK OFF LOW BULLSHIT
|
||
DSJ A6,CRLOAD1
|
||
|
||
MMFM SP,A0,A1,A2
|
||
RETS
|
||
|
||
*
|
||
*SCRCLR - CLEAR THE SCREEN WITH EUGENE
|
||
*ONLY CALL WITH INTERRUPTS DISABLED AND THE DMA SHUT DOWN, OTHERWISE
|
||
* USE CLR_SCRN
|
||
SCRCLR CLR A0
|
||
*SCRFIL - FILL SCREEN WITH A0
|
||
SCRFIL:
|
||
MMTM SP,A1,A2
|
||
CLR A1
|
||
MOVE A1,@CMAPSEL,W ;SELECT COLOR MAP 0
|
||
MOVI SCREEN,A1,L
|
||
MOVI (SCRNE-SCREEN)/32,A2,L
|
||
SCRLP MOVE A0,*A1+,L
|
||
DSJS A2,SCRLP
|
||
MMFM SP,A1,A2
|
||
RETS
|
||
|
||
*
|
||
*LAST2CLR - CLEAR LAST TWO LINES OF BIT MAP(I.E. SET AUTO ERASE COLOR)
|
||
LAST2CLR
|
||
CLR A0
|
||
*
|
||
*LAST2FIL - FILL LAST TWO LINES OF BIT MAP
|
||
*A0 = FILL COLOR
|
||
LAST2FIL
|
||
MOVE A0,@ERASELOC,W ;STUFF DA COLOR
|
||
RETS
|
||
|
||
**************************************************************************
|
||
* *
|
||
* SETPPROC - SETUP TI'S PIXEL PROCESSING REGISTER'S (BFILE), TO MATCH *
|
||
* THE ZUNIT SYSTEM. *
|
||
* NOTE: IF YOU WANT TO DO ANY SPECIAL TRICKS, DON'T USE THIS. *
|
||
* *
|
||
**************************************************************************
|
||
SETPPROC
|
||
PUSH A0
|
||
MOVI OFFSETVAL,B4 ;SET UP OFFSET REGISTER
|
||
MOVI 0,B8 ;SET BACKGROUND COLOR
|
||
MOVI SCRN_PTCH,A0 ;GET SCREEN PITCH
|
||
MOVE A0,B1
|
||
MOVE A0,B3
|
||
LMO A0,A0 ;CONVERT IN TEMPORARY REGISTER
|
||
MOVE A0,@CONVSP ;MOVE TO CONVSP IO REGISTER
|
||
MOVE A0,@CONVDP ;MOVE TO CONVDP IO REGISTER
|
||
PULL A0
|
||
RETS
|
||
|
||
|
||
************ CLEAR SCREEN ROUTINE *********************
|
||
CLR_SCRN:
|
||
CLR A0
|
||
MMTM SP,A1,A2,A3
|
||
MOVE @DISPLAYON,A3,W
|
||
; CLR A1
|
||
; MOVE A1,@DISPLAYON,W
|
||
CALLR DMAQWAIT ;WAIT ON DMA
|
||
CLR A1
|
||
MOVE A1,@CMAPSEL,W ;SELECT COLOR MAP 0
|
||
MOVI SCREEN,A1,L
|
||
MOVI ((SCRNE-2000H)-SCREEN)/32,A2,L
|
||
CLRLP MOVE A0,*A1+,L
|
||
DSJS A2,CLRLP
|
||
MOVE A3,@DISPLAYON,W
|
||
MMFM SP,A1,A2,A3
|
||
RETS
|
||
|
||
;*COLLISION VECTOR LISTS
|
||
;DUMCOLL .WORD 0
|
||
; .LONG DUMRTSG
|
||
|
||
;DUMRTSG
|
||
; CLR A0 ;DON'T STOP SCAN
|
||
; CLRC ;AND DON'T DELETE
|
||
; RETS
|
||
|
||
**************************************************************************
|
||
* *
|
||
* FRANIM - ANIMATION SCRIPT PROCESSOR *
|
||
* A1 = COMMAND: 00 = PROCESS CURRENT FRAME. *
|
||
* 01 = PROCESS TO END OF LIST. *
|
||
* 04 = PROCESS CURRENT FRAME, NO SLEEP(TIME RETRN'D IN A0) *
|
||
* A8 = PTR TO OBJECT BLOCK *
|
||
* A9 = PTR TO CURRENT FRAME *
|
||
* RETURN(S) *
|
||
* CARRY SET IF END OF ANIMATION LIST WAS HIT *
|
||
* A9 = POINTING TO NEXT FRAME, IF NOT AT END OF LIST *
|
||
* NOTE: CALL WITH JSRP, IT SLEEPS *
|
||
* *
|
||
* ANIMATION SCRIPT FORMAT *
|
||
* .LONG IMAGE_HEADER<-- IF = 0 END OF SCRIPT *
|
||
* .WORD SLEEP_TIME <-- BITS 0 - 7 ARE THE SLEEP TIME. *
|
||
* <-- BITS 8 -15 ARE THE FLAGS: *
|
||
* BIT # FLAG *
|
||
* ----- ---- *
|
||
* 8 UNUSED *
|
||
* 9 UNUSED *
|
||
* 10 UNUSED *
|
||
*BNEWPAL EQU 13 13 NEW PALETTE ADDRESS IS SPECIFIED *
|
||
*BFLIPBIT EQU 14 14 NEW FLIP BITS ARE SPECIFIED *
|
||
* FLAG HIERARCHY: 15 --> 8 *
|
||
* OPTIONS SHOULD FOLLOW IN THIS ORDER. *
|
||
* *
|
||
**************************************************************************
|
||
FRANIM
|
||
MMTM A12,A3,A4
|
||
|
||
*CHECK FOR BOGUS SCRIPT POINTER
|
||
|
||
.IF DEBUG
|
||
CMPI 0FFC00000H,A9 ;FFC
|
||
.ELSE
|
||
CMPI 0FFE00000H,A9 ;FFE
|
||
.ENDIF
|
||
JRHS FRAN1
|
||
|
||
.IF DEBUG
|
||
LOCKUP
|
||
EINT
|
||
.ELSE
|
||
CALLERR 8,3 ;BOGUS IMAGE LOG
|
||
.ENDIF
|
||
JRUC FRANND
|
||
FRAN1
|
||
MOVE A1,A3 ;SAVE A1
|
||
FRANL
|
||
MOVE *A9+,A1,L ;GET THE FRAME
|
||
JREQ FRANND ;BR = END WAS HIT
|
||
|
||
MOVE *A8(OFLAGS),A4,W ;NORMAL FLAGS TO BE USED
|
||
MOVE *A9+,A0,W ;GET SLEEP TIME
|
||
CMPI >100,A0 ;SPECIAL FUNCTION?
|
||
JRLO FRAN2 ;NO, BLOW OUT OF HERE
|
||
|
||
MMTM SP,A2,A7
|
||
|
||
*CHECK FOR NEW FLIP
|
||
BTST BFLIPBIT,A0 ;NEW FLIP?
|
||
JREQ FRANNOBI ;NO DICE
|
||
*ACTIVATE NEW FLIP
|
||
MOVE *A9+,A2,W ;GET THE NEW FLIP FLAGS
|
||
MOVE *A8(OFLAGS),A4,W ;GET THE OLD FLIP FLAGS
|
||
ANDNI (M_FLIPV+M_FLIPH),A4 ;CLEAR THE CURRENT FLIP STATUS
|
||
OR A2,A4 ;SET DESIRED BITS
|
||
|
||
*CHECK FOR NEW PALETTE
|
||
FRANNOBI
|
||
BTST BNEWPAL,A0 ;NEW PALETTE ?
|
||
JREQ FRANNOPA ;NO WAY...
|
||
|
||
*ACTIVATE A NEW PALETTE
|
||
MOVE A0,-*SP,W
|
||
MOVE *A9+,A0,L ;GET THE PALETTE ADDRESS
|
||
CALLA GETFPAL ;GET A COLOR MAP ASSIGNMENT
|
||
JRZ FRANNOB0 ;NO PALETTE AVAILABLE
|
||
MOVE A0,A7 ;SAVE HERE
|
||
MOVE A8,A0
|
||
CALLA DELPAL
|
||
MOVE A7,*A8(OPAL),W ;STORE THE NEW PALETTE
|
||
FRANNOB0
|
||
MOVE *SP+,A0,W
|
||
FRANNOPA
|
||
MMFM SP,A2,A7
|
||
SLL 24,A0
|
||
SRL 24,A0 ;WIPE OFF THE SPECIAL FUNCTION BITS
|
||
FRAN2
|
||
CALLA ANI ;SETUP NEW ANIMATION
|
||
|
||
CMPI 4,A3 ;ONE FRAME, NO SLEEP?
|
||
JREQ FRAN3 ;YES
|
||
|
||
MOVE A3,-*A12,W
|
||
CALLA PRCSLP ;SLEEP THE PROPER TIME
|
||
MOVE *A12+,A3,W
|
||
JRNE FRANL ;BR = LOOP 'TIL END OF LIST
|
||
FRAN3
|
||
MOVE A3,A1 ;RESTORE A1
|
||
CLRC ;CLEAR END FLAG
|
||
MMFM A12,A3,A4
|
||
RETP
|
||
FRANND
|
||
MOVE A3,A1 ;RESTORE A1
|
||
SETC ;OTHERWISE, RETURN WITH END FLAG SET
|
||
MMFM A12,A3,A4
|
||
RETP
|
||
|
||
**************************************************************************
|
||
* *
|
||
* FRAMSKIP - SKIP TO THE NEXT FRAME OF AN ANIMATION SCRIPT *
|
||
* A9 = SCRIPT PTR *
|
||
* RETURNS: *
|
||
* C CLR = A9 IS POINTING TO NEXT FRAME *
|
||
* C SET = SCRIPT END WAS HIT, A9 POINTS TO NEXT WORD *
|
||
* *
|
||
**************************************************************************
|
||
;FRAMSKIP
|
||
; MMTM SP,A1
|
||
; MOVE *A9+,A1,L ;GET THE FRAME
|
||
; JREQ FRAMSSC ;BR = END WAS HIT
|
||
; MOVE *A9+,A1,W
|
||
; SLL 16,A1 ;MOVE FLAGGIES UP HERE
|
||
; SLL 1,A1
|
||
; JRNC FRAMSNSP
|
||
; ADDI 32+16+32,A9 ;PROCESS SPAWN
|
||
;FRAMSNSP
|
||
; SLL 1,A1
|
||
; JRNC FRAMSNF
|
||
; ADDK 16,A9 ;NEW FLAGS
|
||
;FRAMSNF
|
||
; SLL 1,A1
|
||
; JRNC FRAMSNP
|
||
; ADDK 32,A9 ;NEW PALETTE
|
||
;FRAMSNP
|
||
; SLL 1,A1
|
||
; JRNC FRAMSNXZ
|
||
; ADDK 16,A9 ;DELTA X & DELTA Z
|
||
;FRAMSNXZ
|
||
; SLL 1,A1
|
||
; JRNC FRAMSNY
|
||
; ADDK 16,A9 ;DELTA Y
|
||
;FRAMSNY
|
||
; CLRC
|
||
; JRUC FRAMSND
|
||
;FRAMSSC
|
||
; SETC
|
||
;FRAMSND
|
||
; MMFM SP,A1
|
||
; RETS
|
||
**************************************************************************
|
||
* *
|
||
* AUTOEOFF - TURN OFF AUTO ERASE *
|
||
* NOTE: BE SURE THE DIRQ IS OFF BEFORE CALLING *
|
||
* *
|
||
**************************************************************************
|
||
AUTOEOFF
|
||
PUSH A0
|
||
PUSHST
|
||
DINT
|
||
MOVE @SYSCOPY,A0,W
|
||
ORI AUTOERAS,A0 ;DISABLE AUTO ERASE
|
||
MOVE A0,@SYSCOPY,W ;STORE EVERYWHERE I DID GO
|
||
POPST
|
||
MOVE A0,@SYSCTRL,W
|
||
PULL A0
|
||
RETS
|
||
|
||
**************************************************************************
|
||
* *
|
||
* AUTOEON - TURN ON AUTO ERASE *
|
||
* NOTE: BE SURE THE DIRQ IS OFF BEFORE CALLING *
|
||
* *
|
||
**************************************************************************
|
||
AUTOEON
|
||
PUSH A0
|
||
MOVE @NOAUTOE,A0,W
|
||
JRNE AUTOEON1 ;BR = DEBUGGER MAN SAYS NO AUTOERASE
|
||
PUSHST
|
||
DINT
|
||
MOVE @SYSCOPY,A0,W
|
||
ANDNI AUTOERAS,A0 ;AUTO ERASE IS ENABLED LOW
|
||
MOVE A0,@SYSCOPY,W ;STORE EVERYWHERE I DID GO
|
||
POPST
|
||
MOVE A0,@SYSCTRL,W
|
||
AUTOEON1
|
||
PULL A0
|
||
RETS
|
||
|
||
**************************************************************************
|
||
* *
|
||
* COPYOBJ - COPIES THE CONTENTS OF ONE OBJECT BLOCK TO THE OTHER. *
|
||
* A0 = PTR TO DESTINATION BLOCK *
|
||
* A8 = PTR TO SOURCE BLOCK *
|
||
* *
|
||
**************************************************************************
|
||
;COPYOBJ
|
||
; MMTM SP,A0,A6,A8
|
||
; MOVI OBSIZ,A6,W ;GET THE SIZE OF THE BLOCK IN WORDS
|
||
; ADDI 64,A0
|
||
; ADDI 64,A8 ;DON'T COPY THE LINKS
|
||
; SRL 4,A6 ;DIVIDE BY 16
|
||
; SUBK 4,A6 ;SUBTRACT TO ACCOUNT FOR THE 1ST TWO LINKS
|
||
;COPYOBJL
|
||
; MOVE *A8+,*A0+,W ;MOVE A WORD
|
||
; DSJS A6,COPYOBJL
|
||
; MMFM SP,A0,A6,A8
|
||
; PUSH A6 ;KLUDGE TO ZERO MISPLACED LINKS
|
||
; CLR A6
|
||
; MOVE A6,*A0(OSHAD),L
|
||
; PULL A6
|
||
; RETS
|
||
.END
|
||
|
||
|