WebSVN – NedoOS – Blame – /src/games/snake/main.asm

Rev	Author	Line No.	Line
73	Alone	1	DEVICE ZXSPECTRUM128
		2	include "../../_sdk/sys_h.asm"
		3
		4	EGA=1
		5
		6	if EGA
		7	attrs=0x3800 ;0x600
		8	attrs_sz=0x600
		9	fieldwid=38
		10	fieldhgt=23
		11	else
		12	attrs=0x5800
		13	attrs_sz=0x300
		14	fieldwid=30
		15	fieldhgt=22
		16	endif
		17
		18	STACK=0x4000
		19
		20
		21	dangerattr1=#38+2 ;red
		22	dangerattr2=#38+4 ;green
		23	dangerattr3=#38+1 ;blue
		24	scoreattr=dangerattr3
		25	wallattr=dangerattr1
		26	snakeattr=dangerattr2
		27	rabbitattr=#40+#30 ;bright yellow
		28	emptyattr=#38
		29
		30	snakecoordssize=fieldwidfieldhgt2;768*2
		31
116	alone	32	dir_r=key_right;cs8;#09
		33	dir_l=key_left;cs5;#08
		34	dir_u=key_up;cs7;#0b
		35	dir_d=key_down;cs6;#0a
73	Alone	36
		37	org PROGSTART
		38	begin
		39	ld sp,STACK
583	alone	40	OS_HIDEFROMPARENT
73	Alone	41
		42	if EGA
		43	ld e,0
		44	else
		45	ld e,3
		46	endif
		47	OS_SETGFX ;e=0:EGA, e=2:MC, e=3:6912, e=6:text ;+SET FOCUS ;e=-1: disable gfx (out: e=old gfxmode)
		48
510	alone	49	;OS_GETSCREENPAGES
344	alone	50	;de=��࠭�� 0-�� ࠭� (d=��), hl=��࠭�� 1-�� ࠭� (h=��)
510	alone	51	;if EGA
		52	;ld a,e
		53	;SETPG32KLOW
		54	;ld a,d
		55	;SETPG32KHIGH
		56	;else
		57	;ld a,d
		58	;SETPG16K
		59	;endif
73	Alone	60
		61	ld hl,attrs
		62	ld de,attrs+1
		63	ld bc,attrs_sz-1
		64	ld (hl),emptyattr
		65	ldir
510	alone	66
		67	call redraw
73	Alone	68
		69	ld hl,#0101
		70	ld (snakecoords),hl
		71	;ld bc,#0a1e
		72	;call prrabbit
		73	call genrabbit
		74	gameloop
510	alone	75	call setpgs_scr
		76
73	Alone	77	if EGA
		78	ld bc,0*256+18
		79	call calcscraddr
		80	else
		81	ld de,#4000+14
		82	endif
		83	ld hl,(curlength)
		84	call prnum
		85	call delay
		86	GET_KEY
116	alone	87	cp key_esc
73	Alone	88	jr z,quit
510	alone	89	cp key_redraw
		90	push af
		91	call z,redrawall
		92	pop af
		93	;a=key
73	Alone	94	call getkey
		95	call shrink
		96	call proldheadastail
344	alone	97	call move_grow ;bc=�� न��
73	Alone	98	push bc
		99	call collide_rabbit_startgrow
		100	call collide_walls_self ;Z=collision
		101	pop bc
		102	jr z,gameover
		103	call prhead
		104	jp gameloop
		105
510	alone	106	redrawall
		107	call redraw
		108	call prsnake
		109	call getheadcoords
		110	call prhead
		111	rabbitxy=$+1
		112	ld bc,0
		113	jp prrabbit
		114	redraw
		115	call setpgs_scr
		116	call cls
		117	jp prfield
		118
		119	setpgs_scr
555	alone	120	ld a,(user_scr0_low) ;ok
510	alone	121	SETPG32KLOW
555	alone	122	ld a,(user_scr0_high) ;ok
510	alone	123	SETPG32KHIGH
		124	ret
		125
		126	redrawgameover
		127	call redrawall
73	Alone	128	gameover
		129	ld hl,endtext
		130	if EGA
		131	ld bc,0x0b0f
		132	else
		133	ld bc,0x0b0b
		134	endif
		135	call prtext
		136	gameoverloop
		137	YIELD
		138	GET_KEY
510	alone	139	cp key_redraw
		140	jr z,redrawgameover
116	alone	141	cp key_esc
73	Alone	142	jr nz,gameoverloop
		143	quit
		144	QUIT
		145
		146	rnd
		147	;0..c-1
		148	ld a,r
		149	rnd0
		150	sub c
		151	jr nc,rnd0
		152	add a,c
		153	ret
		154
		155	collide_rabbit_startgrow
		156	call getheadcoords
		157	;call calcscraddr
		158	call calcattraddr;_fromscr
		159	;de=attraddr (head)
		160	ld a,(de)
		161	cp rabbitattr
		162	ret nz
		163	ld a,5
		164	ld (curgrow),a
		165	;call genrabbit
		166	;ret
		167
		168	genrabbit
		169	ld c,fieldhgt
		170	call rnd
		171	inc a
		172	ld b,a
		173	ld c,fieldwid
		174	call rnd
		175	inc a
		176	ld c,a
		177
344	alone	178	;genrabbit, �᫨ �� 墮��:
73	Alone	179	;call calcscraddr
		180	call calcattraddr;_fromscr
		181	;de=attraddr (rabbit)
		182	ld a,(de)
		183	cp emptyattr
		184	jr nz,genrabbit
510	alone	185	ld (rabbitxy),bc
73	Alone	186
		187	prrabbit
		188	;bc=yx
		189	ld a,rabbitattr
		190	ld (curattr),a
		191	;ld a,'Y'
		192	;jp prcharxy
		193	ld hl,tilerabbit
		194	jp prtilexy
		195
		196	collide_walls_self
		197	;out: Z=collision
		198	call getheadcoords
		199	;call calcscraddr
		200	call calcattraddr;_fromscr
		201	;de=attraddr (head)
		202	ld a,(de)
		203	cp dangerattr1
		204	ret z
		205	cp dangerattr2
		206	ret
		207
		208	delay
		209	ld b,5
		210	delay0
		211	push bc
		212	YIELD
		213	pop bc
		214	djnz delay0
		215	ret
		216
		217	getkey
		218	cp dir_l
		219	jr z,getkey_ok
		220	cp dir_r
		221	jr z,getkey_ok
		222	cp dir_u
		223	jr z,getkey_ok
		224	cp dir_d
		225	ret nz;jr z,getkey_ok
		226	getkey_ok
		227	ld (curdirection),a
		228	ret
		229
		230	shrink
		231	ld a,(curgrow)
		232	or a
		233	jr z,nogrow
		234	dec a
		235	ld (curgrow),a
		236	ret;jr growq
		237	nogrow
		238	ld bc,(snakecoords)
		239	call cltail
		240	ld hl,snakecoords+2
		241	ld de,snakecoords
		242	ld bc,snakecoordssize-2
		243	ldir
		244	ld hl,(curlength)
		245	dec hl
		246	ld (curlength),hl
		247	;growq
		248	ret
		249
510	alone	250	prsnake
		251	ld hl,snakecoords
		252	ld bc,(curlength)
		253	prsnake0
		254	push bc
		255	push hl
		256	ld c,(hl)
		257	inc hl
		258	ld b,(hl)
		259	call prtailelement
		260	pop hl
		261	pop bc
		262	inc hl
		263	cpi
		264	jp pe,prsnake0
		265	ret
		266
73	Alone	267	getheadcoords
344	alone	268	ld hl,(curlength) ;��
73	Alone	269	add hl,hl
		270	ld bc,snakecoords
		271	add hl,bc
		272	ld c,(hl)
		273	inc hl
		274	ld b,(hl)
		275	inc hl
		276	ret
		277
		278	move_grow
344	alone	279	;out: bc=�� न��
73	Alone	280	call getheadcoords
344	alone	281	;bc=�� न��
73	Alone	282	ld a,(curdirection)
		283	dec c
		284	cp dir_l
		285	jr z,moveq
		286	inc c
		287	inc c
		288	cp dir_r
		289	jr z,moveq
		290	dec c
		291	inc b
		292	cp dir_d
		293	jr z,moveq
		294	dec b
		295	dec b
		296	moveq
344	alone	297	;bc=�� न��
73	Alone	298	ld (hl),c
		299	inc hl
		300	ld (hl),b
		301	ld hl,(curlength)
		302	inc hl
		303	ld (curlength),hl
		304	ret
		305
		306	curgrow
		307	db 7
		308	curdirection
		309	db dir_r
		310	curlength
344	alone	311	dw 0 ;��
73	Alone	312
		313	cls
		314	if EGA
		315	ld e,0
		316	OS_CLS
		317	else
		318	ld hl,#4000
		319	ld de,#4001
		320	ld bc,#17ff
		321	ld (hl),0;#ff
		322	ldir
		323	ld hl,#5800
		324	ld de,#5801
		325	ld (hl),emptyattr
		326	ld bc,767
		327	ldir
		328	endif
		329	ret
		330
		331	prfield
		332	ld a,wallattr
		333	ld (curattr),a
		334	ld bc,#0000
		335	ld e,fieldwid+2
		336	call prfieldhor ;top
		337	ld bc,256*(fieldhgt+1);#1700
		338	ld e,fieldwid+2
		339	call prfieldhor ;bottom
		340	ld bc,#0100
		341	ld e,fieldhgt
		342	call prfieldver ;left
		343	ld bc,#0100+(fieldwid+1);#011f
		344	ld e,fieldhgt
		345	;call prfieldver ;right
		346	;ret
		347	prfieldver
		348	;bc=yx
		349	;e=len
		350	prfieldver0
		351	;ld a,fieldmarginsymbol
		352	;call prcharxy
		353	ld hl,tilebrick
		354	call prtilexy
		355	inc b
		356	dec e
		357	jr nz,prfieldver0
		358	ret
		359
		360	prfieldhor
		361	;bc=yx
		362	;e=len
		363	prfieldhor0
		364	;ld a,fieldmarginsymbol
		365	;call prcharxy
		366	ld hl,tilebrick
		367	call prtilexy
		368	inc c
		369	dec e
		370	jr nz,prfieldhor0
		371	ret
		372
		373	proldheadastail
		374	call getheadcoords
510	alone	375	prtailelement
73	Alone	376	;bc=yx
		377	ld a,snakeattr
		378	ld (curattr),a
		379	;ld a,'O'
		380	;jp prcharxy
		381	ld hl,tilesnake
		382	jp prtilexy
		383
		384	prhead
		385	;bc=yx
		386	ld a,snakeattr
		387	ld (curattr),a
		388	;ld a,'O'
		389	;jp prcharxy
		390	ld hl,tilesnakehead
		391	jp prtilexy
		392
		393	cltail
		394	;bc=yx
		395	ld a,emptyattr
		396	ld (curattr),a
		397	;ld a,' '
		398	;jp prcharxy
		399	ld hl,tileempty
		400	jp prtilexy
		401
		402	prtext
344	alone	403	;bc=��न��
73	Alone	404	;hl=text
		405	ld a,emptyattr
		406	ld (curattr),a
		407	ld a,(hl)
		408	or a
		409	ret z
		410	call prcharxy
		411	inc hl
		412	inc c
		413	jr prtext
		414
		415	prnum
		416	ld bc,1000
		417	call prdig
		418	ld bc,100
		419	call prdig
		420	ld bc,10
		421	call prdig
		422	ld bc,1
		423	prdig
		424	ld a,'0'-1
		425	prdig0
		426	inc a
		427	or a
		428	sbc hl,bc
		429	jr nc,prdig0
		430	add hl,bc
		431	;push hl
		432	;call prchar
		433	;pop hl
		434	;ret
		435	prchar
		436	;a=code
		437	;de=screen
		438	push de
		439	push hl
		440	call prcharin
		441	pop hl
		442	pop de
		443	inc e
		444	ret
		445
		446	calcscraddr
		447	;bc=yx
344	alone	448	;�� bc
73	Alone	449	if EGA
		450	ex de,hl
		451	ld a,c ;x
		452	ld l,b ;y
		453	ld h,0
		454	ld b,h
		455	ld c,l
		456	add hl,hl
		457	add hl,hl
		458	add hl,bc ;*5
		459	add hl,hl
		460	add hl,hl
		461	add hl,hl ;*40
		462	add hl,hl
		463	add hl,hl
		464	add hl,hl
		465	add a,l
		466	ld l,a
		467	ld a,h
		468	adc a,0x80
		469	ld h,a
		470	ex de,hl
		471	else
		472	;de=#4000 + (y&#18)+((y*32)&#ff+x)
		473	ld a,b ;y
		474	and #18
		475	add a,#40
		476	ld d,a
		477	ld a,b ;y
		478	add a,a ;*2
		479	add a,a ;*4
		480	add a,a ;*8
		481	add a,a ;*16
		482	add a,a ;*32
		483	add a,c ;x
		484	ld e,a
		485	endif
		486	ret
		487
		488	calcattraddr
		489	;bc=yx
344	alone	490	;�� bc
73	Alone	491	if EGA
		492	;de=attrs + (y&#18)/4+((y*64)&#ff+x)
		493	ld a,b
		494	rrca
		495	rrca
		496	ld d,a
		497	and 0xc0
		498	add a,c
		499	ld e,a
		500	sub c
		501	xor d
		502	add a,attrs/256
		503	ld d,a ;de=attraddr
		504	else
		505	;de=#5800 + (y&#18)/8+((y*32)&#ff+x)
		506	ld a,b
		507	rrca
		508	rrca
		509	rrca
		510	ld d,a
		511	and 0xe0
		512	add a,c
		513	ld e,a
		514	sub c
		515	xor d
		516	add a,attrs/256;#58
		517	ld d,a ;de=attraddr
		518	endif
		519	ret
		520
		521	prtilexy
		522	;hl=tile
		523	;bc=yx
		524	push de
		525	push bc
		526	call calcscraddr
		527	;push de
		528	call prcharin_go
		529	;pop de
		530	pop bc
		531	call calcattraddr;_fromscr
		532	ld a,(curattr)
		533	ld (de),a
		534	pop de
		535	ret
		536
		537	prcharxy
		538	;a=code
		539	;bc=yx
		540	push de
		541	push hl
		542	push bc
		543	push af
		544	;jr $
		545	call calcscraddr
		546	pop af
		547	;push de
		548	call prcharin
		549	;pop de
		550	pop bc
		551	call calcattraddr;_fromscr
		552	curattr=$+1
		553	ld a,0
		554	ld (de),a
		555	pop hl
		556	pop de
		557	ret
		558
		559	prcharin
		560	if EGA
		561	sub 32
		562	ld l,a
		563	ld h,0
		564	add hl,hl
		565	add hl,hl
		566	add hl,hl
		567	add hl,hl
		568	add hl,hl
		569	;ld bc,font-(32*32)
		570	;add hl,bc
		571	ld a,h
		572	add a,font/256
		573	ld h,a
		574	prcharin_go1
		575	ex de,hl
		576
		577	if 1==1
		578	ld bc,40
		579	push hl
		580	push hl
		581	dup 8
		582	ld a,(de) ;font
		583	ld (hl),a ;scr
		584	inc de
		585	add hl,bc
		586	edup
		587	pop hl
		588	set 6,h
		589	;ld d,font/256
		590	dup 8
		591	ld a,(de) ;font
		592	ld (hl),a ;scr
		593	inc de
		594	add hl,bc
		595	edup
		596	pop hl
		597	set 5,h
		598	push hl
		599	;ld d,font/256
		600	dup 8
		601	ld a,(de) ;font
		602	ld (hl),a ;scr
		603	inc de
		604	add hl,bc
		605	edup
		606	pop hl
		607	set 6,h
		608	;ld d,font/256
		609	dup 8
		610	ld a,(de) ;font
		611	ld (hl),a ;scr
		612	inc de
		613	add hl,bc
		614	edup
		615
		616	else
		617	ld bc,40-0x6000
		618	dup 8
		619	ld a,(de) ;font
		620	inc de
		621	ld (hl),a ;scr
		622	set 6,h
		623	ld a,(de) ;font
		624	inc de
		625	ld (hl),a ;scr
		626	res 6,h
		627	set 5,h
		628	ld a,(de) ;font
		629	inc de
		630	ld (hl),a
		631	set 6,h
		632	ld a,(de) ;font
		633	inc de
		634	ld (hl),a ;scr
		635	;res 6,h
		636	;res 5,h
		637	add hl,bc
		638	edup
		639	endif
		640
		641	ret
		642	else
		643	ld l,a
		644	ld h,0
		645	add hl,hl
		646	add hl,hl
		647	add hl,hl
		648	ld bc,font-256;#3c00
		649	add hl,bc
		650	endif
		651
		652	if EGA
		653	if 1==1
		654	prcharin_go=prcharin_go1
		655	else
		656	prcharin_go
		657	ex de,hl
		658	ld bc,40
		659	dup 8
		660	ld a,(de) ;font
		661	ld (hl),a ;scr
		662	set 5,h
		663	ld (hl),a
		664	res 5,h
		665	inc de
		666	add hl,bc
		667	edup
		668	endif
		669	else
		670	prcharin_go
		671	ld b,8
		672	prchar0
		673	ld a,(hl) ;font
		674	ld (de),a ;scr
		675	inc hl
		676	inc d ;+256
		677	djnz prchar0
		678	endif
		679	ret
		680
		681	macro cols data
		682	_l=data/16
		683	_r=data&15
		684	db ((_r&8)<<4) + ((_r&7)<<3) + ((_l&8)<<3) + (_l&7)
		685	endm
		686
		687	macro cols8 d0,d1,d2,d3,d4,d5,d6,d7
		688	cols d0
		689	cols d1
		690	cols d2
		691	cols d3
		692	cols d4
		693	cols d5
		694	cols d6
		695	cols d7
		696	endm
		697
		698	tileempty
		699	if EGA
		700	ds 32
		701	else
		702	ds 8
		703	endif
		704
		705	tilebrick
		706	if EGA
		707	cols8 #00,#22,#aa,#22,#00,#22,#2a,#22
		708	cols8 #00,#20,#20,#20,#00,#22,#aa,#22
		709	cols8 #00,#22,#2a,#22,#00,#22,#aa,#22
		710	cols8 #00,#22,#aa,#22,#00,#20,#20,#20
		711	else
		712	db %00000000
		713	db %11101111
		714	db %00101000
		715	db %11101111
		716	db %00000000
		717	db %11111110
		718	db %10000010
		719	db %11111110
		720	endif
		721
		722	tilesnake
		723	if EGA
		724	cols8 #00,#00,#04,#4c,#4c,#4c,#04,#00
		725	cols8 #00,#44,#cc,#cc,#cc,#cc,#cc,#44
		726	cols8 #00,#40,#c4,#cc,#cc,#cc,#c4,#40
		727	cols8 #00,#00,#00,#40,#40,#40,#00,#00
		728	else
		729	db %00000000
		730	db %00111000
		731	db %01000100
		732	db %10000010
		733	db %10000010
		734	db %10000010
		735	db %01000100
		736	db %00111000
		737	endif
		738
		739	tilesnakehead
		740	if EGA
		741	cols8 #00,#00,#04,#4c,#4c,#4c,#04,#00
		742	cols8 #00,#44,#cc,#fc,#cc,#22,#cc,#44
		743	cols8 #00,#40,#c4,#fc,#cc,#2c,#c4,#40
		744	cols8 #00,#00,#00,#40,#40,#40,#00,#00
		745	else
		746	db %00000000
		747	db %00111000
		748	db %01000100
		749	db %10101010
		750	db %10000010
		751	db %10111010
		752	db %01000100
		753	db %00111000
		754	endif
		755
		756	tilerabbit
		757	if EGA
		758	cols8 #00,#77,#7f,#7f,#07,#07,#07,#00
		759	cols8 #00,#00,#70,#70,#f7,#0f,#f2,#77
		760	cols8 #00,#07,#7f,#7f,#f7,#07,#f7,#70
		761	cols8 #00,#70,#70,#70,#00,#00,#00,#00
		762	else
		763	db %00000000
		764	db %11000110
		765	db %10101010
		766	db %10101010
		767	db %01101100
		768	db %01010100
		769	db %01101100
		770	db %00111000
		771	endif
		772
		773	endtext
		774	db "GAME OVER!",0
		775
260	alone	776	;oldtimer
		777	; dw 0
73	Alone	778
		779	if EGA
		780	align 256
		781	font
		782	incbin "fontgfx"
		783	else
		784	font
		785	incbin "zx.fnt"
		786	endif
		787
		788	snakecoords
344	alone	789	;y,x (�� )
73	Alone	790	;ds snakecoordssize
		791
		792	end
		793
289	dimkam	794	;display "End=",end
73	Alone	795	;display "Free after end=",/d,#c000-end
289	dimkam	796	;display "Size ",/d,end-begin," bytes"
73	Alone	797
		798	savebin "snake.com",begin,end-begin
		799
		800	;LABELSLIST "..\us\user.l"

Subversion Repositories NedoOS

(root)/src/games/snake/main.asm – Rev 583