_load_ram_ahl = $462F ;ahl->page+hl
_writeb_inc_ahl = $5567 ;ld (ahl),c
_jforce = $409C ;TI-OS stack restored
+_EXLP = $4493 ;swap (hl),(de) b times
;-----------------------------
;------- data storage -------
cal _puts
cal receive
cp WormVersion
- jp nz,linkiniterror
+; jp nz,linkiniterror
cal send
+ jr c,linkiniterror
+; cal sendname
+; cal receivename
+
+ ld a,$18
jr multiplayer
linkiniterror:
pop hl
jp DisplayMenu
+sendname:
+ ld hl,worm1+name
+ ld b,maxnamelength
+sendnameloop:
+ ld a,(hl)
+ inc hl
+ psh bc
+ psh hl
+ cal send
+ pop hl
+ pop bc
+; dnz sendnameloop
+ ret
+receivename:
+ ld hl,worm2+name
+ ld b,maxnamelength
+recvnameloop:
+ psh bc
+ psh hl
+ cal receive
+ pop hl
+ pop bc
+ ld (hl),a
+ inc hl
+; dnz recvnameloop
+ ret
+
client:
ld hl,txtReceive
cal _puts
cal Qreceive
jp c,linkiniterror
cp WormVersion
- jp nz,linkiniterror
+; jp nz,linkiniterror
- ld hl,SwapPos
- ld (hl),$f6
+; cal receivename
+; cal sendname
+
+ ld a,$f6
multiplayer:
+ ld (SwapPos),a
ld a,2
ld (nrworms),a
GameOver:
cal _clrLCD
- ld hl,0
- ld (worm1+died),hl
-;+died=0 \ +score1=0
- ld (worm2+died),hl
- ld (worm3+died),hl
- ld (worm4+died),hl
- inc h
- ld (worm1+score+1),hl
-;+score2=0 \ +delay=1
- ld (worm2+score+1),hl
- ld (worm3+score+1),hl
- ld (worm4+score+1),hl
ld hl,worm1set
- ld de,worm1+head
+ ld de,worm1
ld a,4 ;4x (all worms)
createwormsloop:
- ld bc,19
- ldir ;copy 19 bytes
ex de,hl
- ld bc,head
+ ld bc,died
add hl,bc
- ex de,hl ;de=wormX+head
- dec a ;loop
+ ld (hl),0 ;died=0
+ inc hl
+ ld (hl),0 ;score=0
+ inc hl
+ ld (hl),0 ;score+1=0
+ inc hl
+ ld (hl),2 ;delay=2
+ inc hl
+ ex de,hl ;de=wormX+head
+ ld bc,19
+ ldir ;copy 19 bytes
+ dec a ;loop
jr nz,createwormsloop
ld a,(Gametype)
jp nz,nextlevel
psh hl
- ld b,150
-waitsomemore:
- halt
- dnz waitsomemore
+ cal releasekeys
cal _clrWindow
pop hl
;show end msg or smtn
ld a,0
gameCar =$-1
and _datalink
- jr z,SwapPos ;no link
+ jr z,initfinished ;no link
+
xor a
- ld (worm2+input),a
+ ld (worm2+input),a ;worm 2 via link
ld (worm2+left),a
- ld (Speed),a
-
+ ld (Speed),a ;max.speed
SwapPos: ;$18 xx -> $F6 xx
+ ; jr xx -> or xx
jr initfinished
inc a
- ld (worm2+left),a
- ld hl,(worm1+pos)
- ld de,(worm2+pos)
- ld (worm2+pos),hl
- ld (worm1+pos),de
- ld a,(worm1+heading)
- ld b,a
- ld a,(worm2+heading)
- ld (worm1+heading),a
- ld a,b
- ld (worm2+heading),a
+ ld (worm2+left),a ;1
+ ld hl,worm1
+ ld de,worm2
+ ld b,4 ;+heading +pos
+ cal _EXLP ;swap positions
+;&&& over link
+ ld hl,worm1+name
+ ld de,worm2+name
+ ld b,maxnamelength
+ cal _EXLP ;swap positions
initfinished:
ld b,startdelay
Exit:
ld sp,0 ;pop all
SpSave = $-2
+ ld a,D0HD1H
+ out (7),a
cal _clrWindow
ld hl,txtGO
cal _puts
xor a
cp (hl) ;input=0 = link
jr nz,NoLinkIndic
- ld b,7
+ ld b,7 ;{DOWN}
inc hl ;+left
cp (hl)
jr z,hostLinkIndic
- dec b
+ dec b ;{UP}
hostLinkIndic:
ld a,8
ld (_curCol),a
;de=ix+head
ld (ix+tail+1),d
ld (ix+tail),e ;head=tail/size=0
- jr norespawn
ret
unnamedlabel:
respawndue:
ld l,a
cal inputcall
+ ld (sendbyte),a
ld a,h ;previous
cp l ;changed?
ret z
+ ld (ix+delay),a ;=0
+ ret
saverespawncounter:
ld (ix+delay),a
-norespawn:
- ld a,(gameCar)
- and _datalink
- jr nz,inlink
- ret
+ jr inputcall
+; ld a,(ix+input)
+; or a
+; jr z,inlink
+; ret
inkeys: ;use jp not call!
out (1),a ;nop\nop
ld b,(ix+left)
dec b
jr z,receivefirst
+ psh hl
cal send
cal receive
+ pop hl
ld l,a
ret
receivefirst:
psh af
+ psh hl
cal receive
+ pop hl
ld l,a
pop af
psh hl
pop hl ; << call
pop hl ; << call
pop hl ; << levelp new
+ ld (ix+delay),2
jp StartLevel
chkpeahit: ;hl=peapos
TIMEOUT = $1000
-LinkBreak:
+checklink:
pop hl
- ld a,D0HD1H
- out (7),a
- jp Exit
+ dec de
+ ld a,d
+ or e
+ jr z,LinkFailed
+ ld a,$BF
+ out (1),a
+; nop \ nop
+ in a,(1)
+ psh af
+ ld a,%11111111
+ out (1),a
+ pop af
+ bit 6,a
+ jp z,Exit
-receive:
- cal GET_KEY
- cp K_EXIT
- jp z,LinkBreak
in a,(7)
and %11
- cp %11
+ jp (hl)
+
+;--------------
+;---- SEND ---- 8 bits in a
+;-------------- destr:bcdehl
+send:
+ ld c,a
+ ld b,8+1 ;bits to send
+ jr checksend
+sendloop:
+ rr c ;bit to send (in cf)
+ ld a,D0LD1H ;0: lower white
+ jr nc,sendbit
+ ld a,D0HD1L ;1: lower red
+sendbit:
+ out (7),a ;lower one (send bit)
+ ld de,TIMEOUT
+waitacksend:
+ cal checklink ;other calc must lower other whire
+ jr nz,waitacksend
+checksend:
+ ld a,D0HD1H ;ok to raise both
+ out (7),a
+ ld de,TIMEOUT
+finishsend:
+ cal checklink
+ cp %11 ;both raised (by other calc)
+ jr nz,finishsend
+ dnz sendloop ;repeat for all bits
+ .db $F6 ;or NN ;nc
+LinkFailed:
+ scf ;c=error
+ ret
+
+;--------------
+;---- RECV ---- 8 bits to a
+;-------------- destr:bcdehl
+receive:
+ halt ;&&&
+ ld de,TIMEOUT
+ cal checklink
jr z,receive
- in a,(7)
- and %11
cp %11
jr z,receive
- ld b,8
- cal ReceiveCont
+ cal Qreceive
jr c,receive
ret
Qreceive:
- ld b,8
+ ld b,8 ;bits to receive
receiveloop:
ld de,TIMEOUT
WaitRecBit:
- cal CheckLink
- jr z,LinkFailed
+ cal checklink
+ jr z,LinkFailed ;both low = error
cp %11
- jr z,WaitRecBit
-ReceiveCont:
- sub %10
+ jr z,WaitRecBit ;both on = nothing sent
+recvbit:
+ rra ;received bit in cf
ld a,%10
ld d,D0LD1H
- jr c,ReceiveLow
- rra
- ld d,D0HD1L
-ReceiveLow:
- rr c
+ jr c,savebit ;lower white as well
+ rra ;ld a,%01
+ ld d,D0HD1L ;lower red
+savebit:
+ rr c ;save bit
ld (AckBit),a
ld a,d
- out (7),a
+ out (7),a ;lower other (both low)
ld de,TIMEOUT
-WaitAckRec:
- cal CheckLink
+waitackrecv:
+ cal checklink
+; jr z,waitackrecv ;wait for one to go high
cp 0
AckBit =$-1
- jr nz,WaitAckRec
- ld a,D0HD1H
- out (7),a
- ld d,4
-WaitReadyRec:
- dec d
- jr z,ReadyRec
- in a,(7)
- cp %11
- jr nz,WaitReadyRec
-ReadyRec:
- dnz receiveloop
- ld a,c
- ret
-
-send:
- ld c,a
- ld b,8+1
- jr SendAcked
-
-sendloop:
- rr c
- ld a,D0LD1H
- jr nc,SendLow
- ld a,D0HD1L
-SendLow:
- out (7),a
- ld de,TIMEOUT
-WaitAckSend:
- cal CheckLink
- jr nz,WaitAckSend
-SendAcked:
+ jr nz,waitackrecv
ld a,D0HD1H
- out (7),a
- ld de,TIMEOUT
-WaitReadySend:
- cal CheckLink
- cp %11
- jr nz,WaitReadySend
- dnz sendloop
-LinkSuccess:
- .db $F6 ;or NN (skip scf)
-LinkFailed:
- scf
- ld a,c
+ out (7),a ;raise both
+ dnz receiveloop ;repeat for all bits
+ or a ;nc
+ ld a,c ;a=byte received
ret
-CheckLink:
- pop hl
- dec de
- ld a,d
- or e
- jr z,LinkFailed
-
- ld a,$BF
- out (1),a
-; nop \ nop
- in a,(1)
- psh af
- ld a,%11111111
- out (1),a
- pop af
- bit 6,a
- jr z,LinkFailed
-
- in a,(7)
- and %11
- jp (hl)
-
;-----------------------------
;---------- levels -----------
;-----------------------------
git.shiar.nl / wormy.git / blobdiff