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**************************************************************
*
* INITIATED: APRIL 13,1989
* SOFTWARE: MARK TURMELL
*
* MODIFIED: Shawn Liptak, 7/23/91 -New FADEIN/OUT
* Shawn Liptak, 7/28/91 -Merged with fbstuff
*
* COPYRIGHT (C) 1991 WILLIAMS ELECTRONICS GAMES, INC.
*
**************************************************************
.TITLE 'PALSTUFF.ASM'
.FILE 'PALETTE FADER CONTROL'
.WIDTH 132
.OPTION B,D,L,T
.MNOLIST
.INCLUDE "MPROC.EQU" ;MPROC EQUATES
.INCLUDE "DISP.EQU" ;DISPLAY PROC. EQUATES
.INCLUDE "\VIDEO\SYS\SYS.INC" ;Z UNIT SYSTEM EQUATES
.INCLUDE "BGNDTBL.GLO"
.INCLUDE "IMGTBL.GLO"
.INCLUDE "GAME.EQU"
.include "shawn.hdr" ;Macros
;SYMBOLS EXTERNALLY DEFINED
.REF GETFPAL,PALSET,UNGETPAL,DELPAL,FINDPAL,RANGRAND
.REF IRQSKYE,REACTR,RANDPER
.REF PALSET,PALRAM,EXP2
;SYMBOLS DEFINED IN THIS FILE
.DEF PUMP_RED,COUNT,PUMP_CLDS
.DEF BLAKOUT
.DEF FB_FADEOUT,FB_FADEIN
;EQUATES FIRST ORIGINATED IN THIS FILE
FPALNUM .equ 8
FPALSZ .equ 65*16
;UNINITIALIZED RAM DEFINITIONS
.BSS FADERAM ,FPALSZ*FPALNUM ;Fade mem for palettes
.BSS COUNT ,16
.BSS KPBASE ,32
.bss irqskyeo,16 ;Orignal autoerase color
********************************
* BLAKOUT - BLACK OUT SELECTED PALETTE
* A0=NAME OF PALETTE TO BLACK OUT
BLAKOUT
CALLA FINDPAL
SLL 8,A0
MOVE A0,A1
JRZ NOTALLOC
MOVI FADERAM,A0
MOVI 128,A3
CLR A2
CLRBLP MOVE A2,*A0+,L
DSJS A3,CLRBLP
MOVI FADERAM,A0 ;NOW BLACK OUT PALETTE
MOVI 256,A2
CALLA PALSET ;ERASE PALETTE SLOT
NOTALLOC
RETS
********************************
* CLOUDS BEHIND REPORTER
* PUMP_RED PROCESS
* CYCLE NUCLEAR REACTORS
PUMP_CLDS
SLEEP 3
MOVI EXP2,A0
CALLA ONESND
MOVI CLDSZ,A0
MOVE A0,@KPBASE,L
CALLA FINDPAL
JRZ CREDOUT
SLL 8,A0
MOVE A0,A11 ;NEEDED LATER FOR PALSET
MOVK 7,A10 ;PUMP RED A10 TIMES
MOVI 128,A8
CEDLOOP MOVI FADERAM,A0
ADDK 20H,A8
CALLR DO_MULT
SLEEP 1
DSJ A10,CEDLOOP
CREDOUT
MOVK 7,A10 ;PUMP RED A10 TIMES
CRED2 MOVI FADERAM,A0
SUBI 20H,A8
CALLR DO_MULT
SLEEP 1
DSJ A10,CRED2
MOVI 700,A0
CALLA RANDPER
JRNC PUMP_CLDS
MOVK 10,B0
MOVI 3*60,B1
CALLA RANGRAND
CALLA PRCSLP
JRUC PUMP_CLDS
********************************
* PUMP_RED PROCESS, CYCLE NUCLEAR REACTORS
PUMP_RED
SLEEP 18H
MOVI REACTR,A0
MOVE A0,@KPBASE,L
CALLA FINDPAL
JRZ REDOUT
SLL 8,A0
MOVE A0,A11 ;NEEDED LATER FOR PALSET
MOVI 25,A10 ;PUMP RED A10 TIMES
MOVI 128,A8
REDLOOP MOVI FADERAM,A0
ADDK 10H,A8
CALLR DO_MULT
SLEEP 1
DSJ A10,REDLOOP
REDOUT
MOVK 25,A10 ;PUMP RED A10 TIMES
RED2 MOVI FADERAM,A0
SUBI 10H,A8
CALLR DO_MULT
SLEEP 1
DSJ A10,RED2
JRUC PUMP_RED
DO_MULT
MOVE A8,A2
MMTM SP,A8,A10,A11
; ADDI 32,A0 ;GET TO FIRST COLOR PAST 0
; MOVI 63,A9
;NEXCLR MOVE *A0,A1,W
; ZEXT A1,W
; SRL 10,A1 ;GET RED BITS
MOVE @KPBASE,A1,L ;REACTR,A1
;PARAMS
; A0 - DEST RAM FOR PAL
; A1 - SRC FOR PAL
; A2 - COLOR MULTIPLIER
; EACH COLOR IN PALETTE WILL BE MULTIPLIED BY A2 THEN DIVIDED BY 128
; MMTM SP,A0,A1,A3,A4,A5,A6,A7,A8,A9,A10,A11,A14
MOVE *A1+,A14,W
MOVE A14,*A0+,W
SLL 23,A14 ;TOP BITS OF FIELD ARE FLAGS
SRL 23,A14 ;ONLY 9 BITS NEEDED FOR # COLORS
MOVI >7C00,A4 ;A4 - PRE MULT MASK FOR 5 BITS OF RED
; MOVI >03E0,A6 ;A6 - PRE MULT MASK FOR 5 BITS OF GREEN
; MOVI >001F,A8 ;A8 - PRE MULT MASK FOR 5 BITS OF BLUE
MOVE A4,A9
; MOVE A6,A10
; MOVE A8,A11
SLL 7,A9 ; A9 - POST MULT MAX FOR 5 BITS OF RED
; SLL 7,A10 ;A10 - POST MULT MAX FOR 5 BITS OF GREEN
; SLL 7,A11 ;A11 - POST MULT MAX FOR 5 BITS OF BLUE
FADELPR:
MOVE *A1+,A3,W ;A3 - RED
MOVE A3,A5
ANDI 03FFH,A5
; MOVE A3,A5 ;A5 - GREEN
; MOVE A3,A7 ;A7 - BLUE
AND A4,A3
CMPI 1001H,A3
JRC REDOKR
; AND A6,A5
; AND A8,A7
MPYU A2,A3
; MPYU A2,A5
; MPYU A2,A7
CMP A9,A3
JRLE REDOKR
MOVE A9,A3
REDOKR:
; CMP A10,A5
; JRLE GREENOK
; MOVE A10,A5
;GREENOK:
; CMP A11,A7
; JRLE BLUEOK
; MOVE A11,A7
;BLUEOK:
AND A9,A3
SRL 7,A3
; AND A10,A5
OR A5,A3
; OR A7,A3
; SRL 7,A3
MOVE A3,*A0+,W
DSJS A14,FADELPR
; MMFM SP,A0,A1,A3,A4,A5,A6,A7,A8,A9,A10,A11,A14
; RETS
; CMPI 31,A1
; JRZ ROUT
; CMPI 6,A1
; JRC ROUT
; INC A1
; SLL 10,A1
; MOVE *A0,A2,W
; ANDI 03FFH,A2
; OR A1,A2
; MOVE A2,*A0,W
;ROUT ADDI 16,A0
; DSJS A9,NEXCLR
*SETUP PALETTE TRANSFER
*CALLING PARAMETERS:
*A0= PALSRC = 32 BIT SOURCE ADDRESS OF PALETTE COLOR DATA
*A1= PALDEST = BIT 8-15 DESTINATION PALETTE | BIT 0-7 START COLOR
*A2= PLDCNT = 16 BIT COLOR COUNT
*RETURNS: EQ IF UNABLE TO SETUP TRANSFER, NE IF TRANSFER O.K.
MMFM SP,A8,A10,A11
MOVI FADERAM,A0
MOVE A11,A1
MOVE *A0+,A2
CALLA PALSET
RETS
********************************
* FADEIN - Fade in all selected palettes from black
*
* A0=*Palette list to fade in (autoerase + 0-8 pals)
* A1=Fade delay in ticks
* If 1st entry not neg then it enables autoerase fading
SUBR FADEIN
move a0,a9 ;A9=*Palette list
move a1,a10 ;A10=Fade delay
CREATE 0,fadein
rets
fadein
move a13,a6
addi PDATA,a6
movk FPALNUM,a7
move a9,a11
move *a11+,a0,L ;!-=Autoerase color
jrn fi30
move a0,@irqskyeo ;Save color
fi20 move *a11+,a0,L ;Get * palette
jrz fi70 ;0=End
fi30 calla FINDPAL
jrz fi60
not a0 ;Make neg
fi60 sll 8,a0
move a0,*a6+ ;Save palette #
dsj a7,fi20
fi70 clr a8 ;A8=Brightness
fi100 addk 8,a8
movi FADERAM,a5
move a13,a6
addi PDATA,a6
movk FPALNUM,a7
move a9,a11
move *a11,a1,L
jrn fi200
addk 32,a11
move a8,a2
callr FADEPALAE
fi200 move *a11+,a1,L
jrz fi400
move a5,a0
move a8,a2
callr FADEPAL
move a5,a0 ;*Palette colors
move *a6+,a1 ;Palette #
cmpi -256,a1 ;FF00
jrz fi230
move *a0+,a2 ;#Colors
calla PALSET
fi230 addi FPALSZ,a5
dsj a7,fi200
fi400 move a10,a0
calla PRCSLP
cmpi 128,a8
jrlo fi100
fi800 DIE
********************************
* FADEOUT - Fade out all selected palettes to black
*
* A0=*Palette list to fade out (autoerase + 0-8 pals)
* A1=Fade delay in ticks
* If 1st entry not neg then it enables autoerase fading
SUBR FADEOUT
clr a10
move a10,@COUNT
SUBR FADEOUT2
move a0,a9 ;A9=*Palette list
move a1,a10 ;A10=Fade delay
CREATE 0,fadeout
rets
fadeout
move a13,a6
addi PDATA,a6
movk FPALNUM,a7
move a9,a11
move *a11+,a0,L ;!-=Autoerase color
jrn fo30
move @IRQSKYE,a0 ;Save color
move a0,@irqskyeo
fo20 move *a11+,a0,L ;Get * palette
jrz fo70 ;0=End
fo30 calla FINDPAL
jrnz fo60
not a0 ;Make neg
fo60 sll 8,a0
move a0,*a6+ ;Save palette #
dsj a7,fo20
fo70 movi 128,a8 ;A8=Brightness
fo100 subk 8,a8
movi FADERAM,a5
move a13,a6
addi PDATA,a6
movk FPALNUM,a7
move a9,a11
move *a11,a1,L
jrn fo200
addk 32,a11
move a8,a2
callr FADEPALAE
fo200 move *a11+,a1,L
jrz fo400
move a5,a0
move a8,a2
callr FADEPAL
move a5,a0 ;*Palette colors
move *a6+,a1 ;Palette #
cmpi -256,a1 ;FF00
jrz fo230
move *a0+,a2 ;#Colors
calla PALSET
fo230 addi FPALSZ,a5
dsj a7,fo200
fo400 move a10,a0
calla PRCSLP
move @COUNT,a0
cmp a0,a8
jrgt fo100
fo800 DIE
********************************
* Fade autoerase color
SUBRP FADEPALAE ;A2=Brightness (0-128)
PUSH a3,a4,a5,a6,a7,a8,a9,a10,a11
movi IRQSKYE,a0
movi irqskyeo,a1
movk 1,a14
jruc fp20
********************************
* Fade a palette
* Each color in palette will be multiplied by a2 then divided by 128
* A0=*Ram for pal, A1=*Palette, A2=Brightness (0-128)
SUBRP FADEPAL
PUSH a3,a4,a5,a6,a7,a8,a9,a10,a11
move *a1+,a14 ;# Colors
move a14,*a0+
fp20 sll 23,a14 ;Remove any flags
srl 23,a14 ;9 bits needed for # colors
movi >7c00,a4 ;A4=Mask for 5 bits of red
movi >03e0,a6 ;A6=Mask for 5 bits of green
movk >1f,a8 ;A8=Mask for 5 bits of blue
move a4,a9
move a6,a10
move a8,a11
sll 7,a9 ;A9=post mult max for 5 bits of red
sll 7,a10 ;A10=post mult max for 5 bits of green
sll 7,a11 ;A11=post mult max for 5 bits of blue
fp100 move *a1+,a3
move a3,a5 ;A3=Red
move a3,a7 ;A5=Green
and a4,a3 ;A7=Blue
and a6,a5
and a8,a7
mpyu a2,a3
mpyu a2,a5
mpyu a2,a7
cmp a9,a3
jrle redok
move a9,a3
redok cmp a10,a5
jrle greenok
move a10,a5
greenok cmp a11,a7
jrle blueok
move a11,a7
blueok and a9,a3
and a10,a5
or a5,a3
or a7,a3
srl 7,a3
move a3,*a0+ ;Save color
dsj a14,fp100
PULL a3,a4,a5,a6,a7,a8,a9,a10,a11
rets
**************************************************************************
* FADEIN - Fade a list of palettes from black to their current colors
* A0=*List NOT to fade or 0
FB_FADEIN
mmtm sp,a0,a1,a2,a6,a7,a8,a9,a10
movk 8,a10
jruc fbf10
**************************************************************************
* FADEOUT - Fade a list of palettes down to black
* A0=*List NOT to fade or 0
FB_FADEOUT
mmtm sp,a0,a1,a2,a6,a7,a8,a9,a10
movi -8,a10
fbf10 move a0,a6
;Start proc to fade each palette
clr a9 ;palette slot
movi PALRAM,A2 ;A2=*Palette table
fbf20 move *A2(PALCNT),A1 ;Is palette allocated?
jrz fbf70
move *A2(PALID),A8,L ;Ptr to palette
move A6,A7 ;A6=*List of palettes to skip
jrz fbf60
fbf50 move *A7+,A1,L
jrz fbf60
cmp A1,A8
jreq fbf70 ;Skip pal?
jruc fbf50
fbf60 CREATE 0,fadeonep
fbf70 addi PALRSIZ,A2
addk 1,a9
cmpi NUMPAL,A9
jrlt fbf20
fbfx mmfm sp,a0,a1,a2,a6,a7,a8,a9,a10
rets
**************************************************************************
* fadeonep - Fade one palette (Process)
*
* A8=*Palette to be faded
* A9=Palette slot #
* A10=Add value per fade (!0)
fadeonep
sll 24,a9 ;B8-15 dest pal | B0-7 start color
srl 16,a9
.if YUNIT
move a9,a2
srl 12,a2
sll 14,a2
sll 20,a9
srl 20,a9
add a2,a9
.endif
clr a11 ;For up fade
move a10,a10
jrgt fop20
movi 128,a11 ;For dn fade
fop20
;Set up faded pal in process data space
foplp add a10,a11
cmpi 128,a11
jrhi fopx
move a11,a2 ;A2=Color Multiplier
move a13,a0
addi PDATA,a0 ;A0=Dest Ram for Pal
move a0,a5
move a8,a1 ;A1=Src for Pal
callr FADEPAL
move a5,a0 ;>Move faded palette to palram
move a9,a1
move *a0+,a2 ;Get # colors in palette
calla PALSET ;Set transfer
SLEEP 2
jruc foplp
fopx SLEEP 1 ;give last xfer a chance to go
DIE
.end

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