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executable file
·2254 lines (2253 loc) · 55.6 KB
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*
*UFO PROCESS START
*PD=OBJECT,PD2=SHOT TIMER
*
UFOST NEWP UFOLP,STYPE
LEAU ,X
OBI UFOP1,UFOKIL,$3333
STX PD,U
STU OBJID,X
LDD SEED
ANDA #$1F
ADDD BGL
STD OX16,X
LSRB
ADDB #YMIN
STB OY16,X
CLRA
CLRB
STD OYV,X
STD OXV,X
LDA #8
STA PD2,U ;INIT SHOT TIMER
BSR UFONV0
JMP APVCT
*UFO PROCESS
UFOLP LDX PD,U
LDD OPICT,X
CMPD #NULOB
BEQ UFO3
DEC PD2,U
BNE UFO1
LDA UFSTIM
JSR RMAX
STA PD2,U
JSR SHOOT
BEQ UFO1
LDD #USHSND
JSR SNDLD
UFO1 LDU OPICT,X
LEAU OBJL,U ;CYCLE IMAGE
CMPU #UFOP3
BLS UFO2
LDU #UFOP1
BSR UFONV
UFO2 STU OPICT,X
UFO3 NAP 6,UFOLP
*
*UFO VELOCITY
*
UFONV LDA SEED
CMPA UFOSK
BLS UFONVX
UFONV0 LDD #$4001
STD XTEMP
LDD OX16,X
SUBD PLABX
BMI UFONV1
NEG XTEMP
UFONV1 ADDD #20*32 ;X CLOSE?
CMPD #40*32
BLS UFONV3 ;YES, DONT SEEK
LDB XTEMP
SEX
ADDD PLAXV
STD OXV,X
UFONV3 LDA OY16,X
SUBA PLAYC
BMI UFONV4
NEG XTEMP+1
UFONV4 ADDA #10
CMPA #20 ;Y CLOSE?
BLS UFONVX ;YES, QUIT
CLRB
LDA XTEMP+1
ADDD PLAYV
ASRA ; DIVIDE BY 2
RORB
STD OYV,X
UFONVX RTS
*UFOKILL
UFOKIL DEC UFOCNT
KILP $0120,UFHSND
RTS
*
*PROBE START
*A=#
PRBST STA XTEMP
PRBS1 OBI PRBP1,PRBKIL,$CCCC
JSR RAND
LDD HSEED
ANDA #$3F
ADDA #$10
STD OX16,X ;INIT X
LSRB
ADDB #YMIN
STB OY16,X ;INIT Y
LDB SEED
ANDB #$3F
ADDB #-$20
PRBS2 SEX
STD OXV,X
LDB LSEED
ANDB #$7F
SUBB #$40
SEX
BMI PRBS3 ;MIN YV
ORB #$20
BRA PRBS4
PRBS3 ANDB #$DF
PRBS4 STD OYV,X
JSR APVCT
DEC XTEMP
BNE PRBS1
PRBSTX RTS
*
*KILL PROBE
*
PRBKIL KILO $0210,PRHSND
LDA #6
JSR RMAX
LEAY ,X
JSR MMSW
DEC PRBCNT
RTS
*
*RANDOM VELOCITY
*X=OBJECT
RANDV JSR RAND
LDB SEED
SEX
ASLB
ROLA ; X2
STD OYV,X
LDB LSEED
ANDB #$3F
ADDB #-$20
SEX
STD OXV,X
RTS
*
*MAKE A MINI SWARMER
*Y=CENTER,A=#
*
MMSW PSHS D,X,Y,U
STA XTEMP
MMSLP LDA SWCNT
INCA
CMPA #20
BHI MMSWX ;TOO MANY GUYS
STA SWCNT
NEWP MSWM,STYPE
LEAU ,X
OBI SWPIC1,MSWKIL,$2424
LDD OX16,Y
STD OX16,X
LDD OY16,Y
STD OY16,X
STX PD,U
STU OBJID,X
BSR RANDV
LDD HSEED
ANDB SWAC
STB PD2,U ;ACCEL
ANDA #$1F
STA PTIME,U
LDA SWSTIM
JSR RMAX
STA PD4,U
STX OPTR
DEC XTEMP
BNE MMSLP
MMSWX PULS D,X,Y,U,PC
*
*MINI SWARM KILL
*X=OBJECT
MSWKIL DEC SWCNT
JSR KILOFF
PSHS X
JSR KILLOP
PULS X
LDD OX16,X
SUBD #$40
STD OX16,X
LDD OY16,X
SUBA #2
STA OY16,X
LDU #SWXP1
STU OPICT,X
JSR XSVCT
LDD #$0115
JSR SCORE
LDD #SWHSND
JMP SNDLD
*
*MINI SWARM PROCESS
*PD=OBJECT,PD2 ACCELERATION,PD4=SHOT TIMER
*
MSWM LDX PD,U
LDB SWXV
LDY PLABX
CMPY OX16,X
BHS MSWM2
NEGB
MSWM2 SEX
STD OXV,X ;X VELOCITY
BRA MSWL
MSWLP LDB PD2,U
LDX PD,U
LDA PLAYC ;GET Y ACCEL
CMPA OY16,X
BHI MSWM3
NEGB
MSWM3 SEX
ADDD OYV,X
CMPD #$0200
BLT MSWM4
LDD #$0200
MSWM4 CMPD #-$200
BGT MSWM5
LDD #-$200
MSWM5 STD OYV,X
*DAMPING
COMA
COMB
ASLB
ROLA
ASLB
ROLA
TFR A,B
SEX
ADDD OYV,X
STD OYV,X
*RANDOM FACTOR
LDB SEED
ANDB #$1F
ADDB #-$10
SEX
ADDD OYV,X
STD OYV,X
LDD PLABX ;PAST HIM?
SUBD OX16,X
ADDD #150*32
MSP CMPD #300*32 ;WAY PAST?
BHI MSWM ;GO BACK + GIT IM
*FIRE?
MSWMF DEC PD4,U
BNE MSWL
JSR SWBMB ;BOMB GUY
MSWL NAP 3,MSWLP
*
*SWARM BOMB
*
SWBMB PSHS X
LDD PLABX
SUBD OX16,X
EORA OXV,X
BMI SWBX ;NOT HEADED FOR PLAYER
LEAY ,X
SHL FBOUT,BMBP1,BKIL
BEQ SWBX
LDD OXV,Y
ASLB
ROLA
ASLB
ROLA
ASLB
ROLA
STD OXV,X
LDD #SWSSND ;SWARMER SOUND
JSR SNDLD
CLRB
LDA PLAYC
SUBA OY16,X
SWB1 ASRA
RORB
ASRA
RORB
ASRA
RORB
ASRA
RORB
ASRA
RORB
STD OYV,X
SWBX LDA SWSTIM
JSR RMAX
STA PD4,U
PULS X,PC
*
*ASTRONAUT PROCESS
*WALK ON TERRAIN
*PD =CURRENT INDEX TO TLIST
*
ASTRO LDX PD,U
LEAX 2,X
CMPX #TLIST+32
BLO ASTRO1
LDX #TLIST
ASTRO1 STX PD,U
LDX ,X
BEQ ASTX ;NOONE THERE
LDD OBJX,X ;ON SCREEN?
BEQ ASTX ;NOPE
LDD OCVECT,X
CMPD #ASTKIL
BNE ASTX ;CAPTURED
LDD OPICT,X
CMPD #ASTP2
BHI ASTR ;WALKING TO RIGHT
*WALKING TO LEFT
LDA SEED
CMPA #8
BLS ASTRX1 ;TURN AROUND
JSR GETALT
ADDA #4
CMPA #$E8
BLS ASTL1
LDA #$E8
ASTL1 LDB #1
CMPA OY16,X
BEQ ASTL3
BHI ASTL2
NEGB
ASTL2 ADDB OY16,X
STB OY16,X ;UP/DOWN
ASTL3 LDU OPICT,X ;TOGGLE IMAGE
LEAU OBJL,U
CMPU #ASTP2
BLS ASTLX2
ASTLX1 LDU #ASTP1
ASTLX2 LDB #-$20 ;MOVE LEFT
BRA ASTX1
*WALKING TO RIGHT
ASTR LDA SEED
CMPA #$8
BLS ASTLX1 ;TURN AROUND
BSR GETALT
ADDA #15
CMPA #$E8
BLS ASTR1
LDA #$E8
ASTR1 LDB #1
CMPA OY16,X
BEQ ASTR3
BHI ASTR2
NEGB
ASTR2 ADDB OY16,X
STB OY16,X
ASTR3 LDU OPICT,X ;IMAGING
LEAU OBJL,U
CMPU #ASTP4
BLS ASTRX2
ASTRX1 LDU #ASTP3
ASTRX2 LDB #$20
ASTX1 STU OPICT,X
SEX
ADDD OX16,X
STD OX16,X
ASTX NAP 2,ASTRO
*
*GET ALTITUDE
*A=ALT,X=OBJ
*
GETALT PSHS B,X
LDD OX16,X
LSRA
RORB
LSRA
RORB
LSRA
RORB
LSRA
RORB
LSRA
RORB
LSRA
RORB
LDX #ALTBL
LDA D,X
PULS B,X,PC
*
*KILL ASTRO
*X=OBJECT
ASTKIL LDA PCFLG ;PLAYER?
BEQ ASTK1
CLRA
PULS D,PC ;IGNORE
ASTK1 BSR ASTCLR
JSR KILOFF
LDD #ASXP1
STD OPICT,X
LDD OX16,X
SUBD #$40
STD OX16,X
JSR XSVCT
LDD #AHSND
JMP SNDLD
AKIL1 LDU OBJID,X
BEQ ASTKIL ;NOT FALLING
LDA PCFLG
BEQ AKIL10 ;SHOT
LDD PADDR,U ;1ST TIME
CMPD #AFALL2
BEQ AKIL2
LDD #ACSND
JSR SNDLD
PSHS X
NEWP P500,STYPE
LEAY ,X
PULS X
STX PD,Y ;ASTRO OBJ-500 ROUTINE
AKIL2 LDD #AFALL2
STD PADDR,U
NOKILL CLRA
PULS D,PC
AKIL10 BSR ASTK1
JMP KILLOP
*
*CLEAR ASTRO FROM LIST
*
ASTCLR LEAY ,X
ASTC0 PSHS X,U,A
LDU #TLIST
LDA #64
ASTC1 CMPY ,U++
BEQ ASTC2
DECA
BNE ASTC1
JSR ERROR
ASTC2 CLRD
STD -2,U
DEC ASTCNT
BNE ASTCX
NEWP TERBLO,STYPE ;BLOW UP TERRAIN
ASTCX PULS X,U,PC,A
*
*TERRAIN BLOW PROCESS
*
TERBLO LDA STATUS
ORA #2
STA STATUS
CLR PD,U ;LOOP COUNT
JSR MAPCH7
JSR BGERAS
*OFF SCANNER TERRAIN
LDX #STETAB
LDU #0
LDA #64
TBL1 STU [,X++]
DECA
BNE TBL1
TBLP0 LDX OFREE
LDD #TEREX
STD OPICT,X
LDB #2
STB XTEMP
TBLP JSR RAND
ANDA #$3F
ADDD BGL
STD OX16,X
JSR GETALT
STA OY16,X
SUBA #10
JSR XSVCT
DEC XTEMP
BNE TBLP
LDA SEED
ANDA #$1F
LDX #COLTAB
LDA A,X
STA PCRAM
LDD #AHSND ;LIGHTNING BOLT
JSR SNDLD
LDX #TBL3
LDA #2
TBL2 LDB #8
STB OVCNT ;PHONY OVERLOAD
JMP SLEEP
TBL3 CLR PCRAM
LDA PD,U ;GET ITERATION
LSRA
LSRA
LSRA
INCA
JSR RMAX ;RANDOM SLEEP
LDX #TBL4
BRA TBL2
TBL4 INC PD,U
LDA PD,U
CMPA #16
BNE TBLP0
LDD #TBSND
JSR SNDLD
JMP SUCIDE
*
*250 POINT PROCESS
*PD=ASTRO PROCESS
*
P250 OBI C25P1,NOKILL,$0000
LDD #$0125
BRA P5000
*
*500 POINT PROCESS
*X=EARTHLING OBJECT
*
P500 OBI C5P1,NOKILL,$0000
LDD #$0150
P5000 JSR SCORE
LDY PD,U
LDD PLAXV
STD OXV,X
LDD #0
STD OYV,X
LDA #$11
STA OTYP,X
LDD OX16,Y
STD OX16,X
LDD OY16,Y
BMI P501
ADDD #$1800
BRA P502
P501 SUBD #$2000
P502 STD OY16,X
STX OPTR
STX PD,U ;OBJECT INDEX
NAP 50,P503
P503 LDX PD,U
JSR KILOFF
JMP SUCIDE
*
*SHOOT AT PLAYER
*X=OBJECT FIRING
*
SHOOT PSHS X
SHL FBOUT,BMBP1,BKIL
BEQ SHOOTX ;NONE LEFT
LDB SEED
ANDB #$1F
ADDB #-$10
ADDB PLAXC
SUBB OBJX,X
SEX
ASLB
ROLA
ASLB
ROLA
STD OXV,X
LDB SEED ;REL?
CMPB #120
BLS SHOOT0 ;NO
LDD PLAXV
ASLB
ROLA
ASLB
ROLA
ADDD OXV,X
STD OXV,X
SHOOT0 LDB LSEED
ANDB #$1F
ADDB #-$10
ADDB PLAYC
SUBB OBJY,X
SEX
ASLB
ROLA
ASLB
ROLA
STD OYV,X
LDA #1 ;RETURN NE
SHOOTX PULS X,PC
*
*LANDER SHOOT
*
LSHOT DEC PD6,U
BNE LSHTX
LDA LDSTIM
JSR RMAX
STA PD6,U
BSR SHOOT
BEQ LSHTX
LDD #LSHSND
JSR SNDLD
LSHTX RTS
*
*START SCHITZOS
*A=NUMBER
*PD=X
*PD2=SHOT TIMER
*
SCZST PSHS A
STA XTEMP
SCZS0 NEWP SCZ0,STYPE
LEAU ,X
OBI SCZP1,SCZKIL,$CC33
JSR RAND
LDD BGL
SUBD #300*32
STD XTEMP2
LDD HSEED
SUBD XTEMP2
CMPD #600*32
BHS SCZS1
ADDD #$8000
SCZS1 ADDD XTEMP2 ;AVOID PLAYER
STD OX16,X
LDA SEED
LSRA
ADDA #YMIN
STA OY16,X
CLRD
STD OYV,X
STD OXV,X
LDA SZSTIM
JSR RMAX
STA PD,U
JSR APVCT
STU OBJID,X
STX PD,U
INC SCZCNT
DEC XTEMP
BNE SCZS0
PULS A,PC
*KILL SHITZO
SCZKIL DEC SCZCNT
KILP $0115,SCHSND
RTS
*
*GET TARGET FROM LIST
*RET EQ IF NONE,D=TRG OBJECT
*U=PROCESS
GTARG PSHS X
LDA ASTCNT
BEQ GTX ;NOBODY LEFT
LDX TPTR
GT1 LEAX 2,X
CMPX #TLIST+64
BLO GT2
LDX #TLIST
GT2 LDD ,X
BNE GT3
CMPX TPTR ;AROUND ONCE?
BNE GT1
PULS X,PC
GT3 STX TPTR ;FOUND ONE
STD PD2,U
STX PD4,U
GTX PULS X,PC
*
*START LANDERS
*A=NUMBER
*
LANDST PSHS A
STA XTEMP
LNDST0 TST ASTCNT ;NO MORE TARGETS
BNE LNDST1
JMP SCZS0
LNDST1 NEWP LANDS0,STYPE
LEAU ,X
OBI LNDP1,LKILL,$4433
JSR RAND
LDD HSEED
STD OX16,X
LDA #YMIN+2
STA OY16,X
LDD LNDYV
STD OYV,X
LDA LDSTIM ;SHOOTING TIME
JSR RMAX
STA PD6,U
LDA LNDXV
JSR RMAX
TFR A,B
CLRA
BITB #1
BEQ LNS2
COMB
COMA
LNS2 STD OXV,X
STU OBJID,X
JSR APVCT
STX PD,U
BSR GTARG
INC LNDCNT
DEC XTEMP
BNE LNDST0
LNDSTX PULS A,PC
*
*LANDER KIDNAP
*PD=OBJECT,PD2=TARGET,PD4=TLIST INDEX
*PD6=SHOT TIMER
LANDS0 LDX PD,U
LDY PD2,U
LDD [PD4,U] ;TARGET ALIVE?
BEQ LNDSAA
LDA OCVECT+1,Y
CMPA #(ASTKIL<<8&$FF00)>>8
BNE LNDSAA ;ORBIT
LDA OX16,X
ANDA #$FC
STA XTEMP
LDA OX16,Y
ANDA #$FC
CMPA XTEMP ;CLOSE?
BEQ LANDG0 ;GET IM
BRA LANDSA
LNDSAA LDA OTYP,X ;HYPERABLE
ANDA #$FE
STA OTYP,X
JSR GTARG ;RE:TARGET
LBEQ SCZ00 ;NO, FREAK
LANDSA JSR GETALT
SUBA #50
SUBA OY16,X
BHI LANDS1
CMPA #-20
BLT LNDS1
CLRA
CLRB
BRA LANDS2
LNDS1 LDD LNDYV
COMA
COMB
BRA LANDS2
LANDS1 LDD LNDYV
LANDS2 STD OYV,X ;NEW Y VEL
LDD OPICT,X ;APPEARING?
CMPD #NULOB
BEQ LANDS4
JSR LSHOT
LDU OPICT,X ;NEW PICT
LEAU OBJL,U
CMPU #LNDP3
BLS LANDS3
LDU #LNDP1
LANDS3 STU OPICT,X
LANDS4 NAP 6,LANDS0
*LETS GET HIM
LANDG0 CLRD
INC OTYP,X ;DONT HYPER ME
STD OXV,X
STD OYV,X
LDD #LNDP1
STD OPICT,X
LANDG LDX PD,U
LDY PD2,U
LDD [PD4,U]
BEQ LNDSAA ;DEAD
LDA OCVECT+1,Y
CMPA #(ASTKIL<<8&$FF00)>>8
BNE LNDSAA ;TAKEN
LDD OX16,Y
ANDB #$E0
STD XTEMP2
LDD OX16,X
ANDB #$E0
CMPD XTEMP2
BEQ LNDG2
BLT LNDG1
LDB #-$20
BRA LANDG1
LNDG1 LDB #$20
LANDG1 SEX
ADDD OX16,X
STD OX16,X
LNDG2 LDA OY16,Y
SUBA #12
CMPA OY16,X
BEQ LANDG3
LDD LNDYV
BHS LANDG2
COMA
COMB
LANDG2 ADDD OY16,X
STD OY16,X
LNDG20 JSR LSHOT
NAP 1,LANDG
*ARE WE ON HIM?
LANDG3 LDD OX16,X
ADDD #$0040
SUBD OX16,Y
CMPD #$80
BHI LNDG20 ;NOPE
LDD #LKIL1 ;CHANGE KILL VECTOR
STD OCVECT,X
LDD LNDYV
COMB
COMA
STD OYV,X ;SPLIT
STD OYV,Y
LDD #LPKSND
JSR SNDLD
LDD #AKIL1
STD OCVECT,Y
*FLEE
LANDF LDU CRPROC
LDX PD,U
LDA OY16,X
CMPA #YMIN+8
BLS LANDFX ;ALL DONE
JSR LSHOT
NAP 4,LANDF
*PULL HIM INSIDE
LANDFX LDD #LSKSND
JSR SNDLD
LNDFXA LDX PD,U
LDY PD2,U
LDD [PD4,U]
BNE LNDFX0
JSR KILOFF ;GIVE UP
DEC LNDCNT
INC LNDRES
JMP SUCIDE
LNDFX0 CLRD
STD OYV,X
STD OYV,Y
LDA OY16,Y
CMPA OY16,X
BLS LNDFX1
DEC OY16,Y
LDA #$12
JSR SNDOUT
NAP 1,LNDFXA
LNDFX1 LEAX ,Y ;KILL ASTRO
LDD OBJX,Y ;CENTER EARTHLING BLOW
ADDA #1
STD CENTMP
JSR ASTK1
SCZ00 DEC LNDCNT
INC SCZCNT
LDX PD,U
CLR OTYP,X ;OK TO HYPER
LDD #SCZP1
STD OPICT,X
LDD #$CC33
STD OBJCOL,X
LDD #SCZKIL
STD OCVECT,X
LDA SZSTIM
STA PD2,U
*
*I AM SCHITZO I,M FEELING FINE
*PD=OBJECT,PD2=SHOT TIME
*
SCZ0 LDX PD,U
LDB SZXV
LDY PLABX
CMPY OX16,X
BGE SCZ1
NEGB
SCZ1 SEX
STD OXV,X ;SEEK X
LDD PLABX ;X CLOSE?
SUBD OX16,X
ADDD #380
CMPD #$700
BLS SCZ6 ;SEEK Y
LDA PLAYC ;AVOID Y
SUBA OY16,X
BLS SCZ2
CMPA #8
BHI SCZ3
LDD SZYV
COMA
COMB
BRA SCZ5
SCZ2 CMPA #-8
BGT SCZ4
SCZ3 CLRD
BRA SCZ5
SCZ4 LDD SZYV
SCZ5 STD OYV,X
BRA SCZ10
SCZ6 LDA PLAYC ;SEEK Y
CMPA OY16,X
LDD SZYV
BHS SCZ7
COMA
COMB
SCZ7 STD OYV,X
LDD OBJX,X
BEQ SCZ12 ;NOT ON SCREEN
*RANDOM Y HOP
SCZ10 LDB SZRY
LDA SEED
BMI SCZ11
NEGB
SCZ11 ADDB OY16,X
CMPB #YMIN
BHS SCZ110
LDB #YMAX
SCZ110 STB OY16,X
DEC PD2,U ;SHOT TIME
BNE SCZ12
LDA SZSTIM
JSR RMAX
STA PD2,U
JSR SHOOT
BEQ SCZ12
LDD #SSHSND
JSR SNDLD
SCZ12 NAP 3,SCZ0
*
*KILL KIDNAPPING LANDER
*
LKIL1 LDU OBJID,X ;GOT A PASSENGER?
LDD [PD4,U]
BEQ LKILL
LDD #0
LDD #0 ;SPACE SAVER FO SOUND CALL
PSHS X
NEWP AFALL,STYPE ;START HIM FALLING
LDU PD2,U
STU PD,X
LDD #ASCSND
JSR SNDLD ;SCREAM.....
LDD #0
STD OYV,U
STX OBJID,U
PULS X
*KILL LANDR
LKILL DEC LNDCNT
KILP $0115,LHSND
RTS
*
*ASTRONAUT FALL
*
AFALL LDX PD,U
LDD #8 ;ACCEL DOWNWARD
ADDD OYV,X
CMPD #$300
BHS AFALL0
STD OYV,X
AFALL0 JSR GETALT
CMPA OY16,X ;HIT GROUND?
BHI AFALL1 ;NO
LDD OYV,X
CMPD #$E0 ;FATAL?
BLS ALAND ;NO
LDD OBJX,X
ADDD #$0107
STD CENTMP ;CENTER OF EXPLOSION
JSR ASTK1
JMP SUCIDE
AFALL1 NAP 4,AFALL
AFALL2 LDX PD,U
LDD #0
STD OYV,X
LDA PLAY16
ADDA #10
STA OY16,X
LDD PLABX
ADDD #$0080
STD OX16,X
JSR GETALT
CMPA OY16,X
BLO ALAND0 ;WERE ON THE GROUND
NAP 1,AFALL2
ALAND PSHS X
LDX #P250
BRA ALND00
ALAND0 PSHS X
LDX #P500
ALND00 LDA #STYPE
JSR MKPROC
LEAY ,X
PULS X
STX PD,Y ;ASTRO OBJECT TO 500 PROC
LDD #0
STD OBJID,X
STD OYV,X
LDD #ASTKIL
STD OCVECT,X
LDD #ALSND
JSR SNDLD
JMP SUCIDE
*
*TIEST
*A=# IN SQUAD 1-4
*
TIEST STA XTEMP
LDB TIEXV
COM TFLG ;ALTERNATE DIRECTIONS
BMI TIEST1
NEGB
TIEST1 STB XTEMP+1 ;X VELOCITY
LDX #TIE
LDA #STYPE
JSR MSPROC ;MAKE A SUPER PROCESS
LEAU ,X ;SAVE INDEX
LDA XTEMP
STA PD+8,U
CLRD
STD PD,U
STD PD2,U
STD PD4,U
STD PD6,U
TIEST2 OBI TIEP1,TIEKIL,$8888
LDB XTEMP+1
SEX
STD OXV,X