Split source in more files, changed network behavior to prepare for direct connect.

Makefile

@@ -1,4 +1,4 @@
-#DBG = -g
+DBG = -g
 CC	= gcc
 WARNFLAGS = -Wall -Wmissing-declarations -Wdeclaration-after-statement -Wcast-align -Winline -Wsign-compare -Wnested-externs -Wpointer-arith -Wformat-security
 override CFLAGS += -D_REENTRANT -O2 $(shell sdl-config --cflags) $(DBG) $(WARNFLAGS)
@@ -6,18 +6,30 @@ override CFLAGS += -D_REENTRANT -O2 $(shell sdl-config --cflags) $(DBG) $(WARNFL
 .PHONY: all clean install
 all: sdlbomber
 
-sdlbomber: bomber.o gfx.o sound.o announce.o
+sdlbomber: announce.o bomber.o draw.o game.o gfx.o sound.o list.o network.o menu.o utils.o
-	gcc -o sdlbomber bomber.o gfx.o sound.o announce.o $(shell sdl-config --libs) -lavahi-common -lavahi-client $(DBG)
+	gcc -o $@ $^ $(shell sdl-config --libs) -lavahi-common -lavahi-client $(DBG)
 
 matcher: matcher.c
 
-bomber.o: bomber.c bomber.h gfx.h announce.h sound.h
+announce.o: announce.c announce.h
+
+bomber.o: bomber.c announce.h bomber.h draw.h game.h gfx.h list.h menu.h network.h sound.h utils.h
+
+draw.o: draw.c draw.h bomber.h gfx.h
+
+game.o: game.c announce.h bomber.h draw.h game.h gfx.h list.h menu.h network.h sound.h utils.h
 
 gfx.o: gfx.c gfx.h bomber.h
 
+list.o: list.c bomber.h list.h utils.h
+
+menu.o: menu.c announce.h bomber.h draw.h game.h gfx.h list.h menu.h network.h sound.h utils.h
+
+network.o: network.c announce.h bomber.h game.h menu.h network.h utils.h
+
 sound.o: sound.c sound.h
 
-announce.o: announce.c announce.h
+utils.o: utils.c bomber.h utils.h gfx.h
 
 clean:
 	rm -f *.o matcher sdlbomber

README

@@ -55,40 +55,6 @@ There isn't much point in playing the game alone (single player). In that
 case the only thing to avoid is accidentally killing yourself. Big deal...
 It's really a multiplayer game.
 
------------------ Left to do: -------------------
-Come up with a better scheme for internet play, as it is any latency will
-kill the game playability. Works fine on LAN though.
-
-Figure out why matching doesn't work through a firewall...
-[Specific case is 2 machines on my LAN cannot be matched by a machine that
-is outside the firewall, and the firewall machine is doing IP masquerading.
-Net result is matcher gets remapped IP addresses and these mean nothing
-inside the LAN, only make sense when used from the outside world]
-
-Score.
-
-Remap movement keys not implemented.
-
-Allow game hoster to set network game options and have them visible to players
-who have joined the game.
-
-Alternate gfx sets.
-
-Better handling of 8 bit mode with limited palette.
-
-Computer controlled things that can kill you.
-
-Other bonus types that can be harmful, such as skull.
-
-Internet play where everything is asynchronous, thus playable with a fixed
-latency. As it is now slaves send to master, then master sends back to
-slaves, and this data xfer must complete before the game can advance a step.
-For internet this would be intolerable. I've never tried though...
-
-Better docs, online explanations, attract mode...
-
-Single player with computer controlled figures that must be killed/avoided.
-
 ----------------
 Direct comments, complaints and questions to dash@xdr.com
 This code is GPL.

TODO

@@ -0,0 +1,34 @@
+----------------- Left to do: -------------------
+Come up with a better scheme for internet play, as it is any latency will
+kill the game playability. Works fine on LAN though.
+
+Figure out why matching doesn't work through a firewall...
+[Specific case is 2 machines on my LAN cannot be matched by a machine that
+is outside the firewall, and the firewall machine is doing IP masquerading.
+Net result is matcher gets remapped IP addresses and these mean nothing
+inside the LAN, only make sense when used from the outside world]
+
+Score.
+
+Remap movement keys not implemented.
+
+Allow game hoster to set network game options and have them visible to players
+who have joined the game.
+
+Alternate gfx sets.
+
+Better handling of 8 bit mode with limited palette.
+
+Computer controlled things that can kill you.
+
+Other bonus types that can be harmful, such as skull.
+
+Internet play where everything is asynchronous, thus playable with a fixed
+latency. As it is now slaves send to master, then master sends back to
+slaves, and this data xfer must complete before the game can advance a step.
+For internet this would be intolerable. I've never tried though...
+
+Better docs, online explanations, attract mode...
+
+Single player with computer controlled figures that must be killed/avoided.
+

announce.c

@@ -26,7 +26,7 @@ static AvahiEntryGroup *group = NULL;
 static char* name = NULL;
 
 static uint16_t port = 0;
-static uint32_t unique = 0, version = 0;
+static uint32_t version = 0;
 
 static volatile int all_for_now;
 
@@ -82,10 +82,9 @@ static void create_services(AvahiClient *c) {
 
 again:
 	if (avahi_entry_group_is_empty(group)) {
-		char buf_unique[128], buf_version[128];
+		char buf_version[128];
-		snprintf(buf_unique, sizeof(buf_unique), "unique=%X", (unsigned int) unique);
 		snprintf(buf_version, sizeof(buf_version), "version=%X", (unsigned int) version);
-		if ((ret = avahi_entry_group_add_service(group, AVAHI_IF_UNSPEC, AVAHI_PROTO_UNSPEC, 0, name, SERVICE_TYPE, NULL, NULL, port, buf_unique, buf_version, NULL)) < 0) {
+		if ((ret = avahi_entry_group_add_service(group, AVAHI_IF_UNSPEC, AVAHI_PROTO_UNSPEC, 0, name, SERVICE_TYPE, NULL, NULL, port, buf_version, NULL)) < 0) {
 
 			if (ret == AVAHI_ERR_COLLISION)
 				goto collision;
@@ -136,12 +135,11 @@ static void client_callback(AvahiClient *c, AvahiClientState state, void * userd
 	}
 }
 
-int registergame(char *playername, uint16_t p, uint32_t uniq, unsigned char v[4]) {
+int registergame(const char *playername, uint16_t p, const unsigned char v[4]) {
 	if (name) avahi_free(name);
 	name = avahi_strdup(playername);
 
 	port = p;
-	unique = htonl(uniq);
 	memcpy(&version, v, 4);
 	version = htonl(version);
 
@@ -180,20 +178,17 @@ static void resolve_callback(AvahiServiceResolver *r, AvahiIfIndex interface, Av
 
 		case AVAHI_RESOLVER_FOUND: {
 			gamelistentry *ge;
-			unsigned int uniq, version;
+			unsigned int version;
-			int have_unique = 0, have_version = 0;
+			int have_version = 0;
 			AvahiStringList *psl;
 			for (psl = txt ; psl ; psl = psl->next) {
-				if (0 == strncmp("unique=", (const char*) psl->text, 7)) {
+				if (0 == strncmp("version=", (const char*) psl->text, 8)) {
-					sscanf((const char*) psl->text, "unique=%X", &uniq);
-					have_unique = 1;
-				} else if (0 == strncmp("version=", (const char*) psl->text, 8)) {
 					sscanf((const char*) psl->text, "version=%X", &version);
 					if (version != want_version) goto done; /* version mismatch */
 					have_version = 1;
 				}
 			}
-			if (!have_unique || !have_version) goto done;
+			if (!have_version) goto done;
 			i = gamelistsize++;
 			ge = &gamelistentries[i];
 			memset(ge, 0, sizeof(*ge));
@@ -201,7 +196,6 @@ static void resolve_callback(AvahiServiceResolver *r, AvahiIfIndex interface, Av
 			ge->netname.sin_family = AF_INET;
 			ge->netname.sin_port = port;
 			ge->name = avahi_strdup(name);
-			ge->unique = ntohl(uniq);
 		}
 	}
 
@@ -257,7 +251,7 @@ static void freefoundgames() {
 	gamelistsize = 0;
 }
 
-int searchgames(unsigned char version[4]) {
+int searchgames(const unsigned char version[4]) {
 	int i;
 	AvahiServiceBrowser *sb = NULL;
 	uint32_t gameversion;

announce.h

@@ -7,12 +7,11 @@ typedef struct gamelistentry gamelistentry;
 struct gamelistentry {
 	struct sockaddr_in netname;
 	char *name;
-	uint32_t unique;
 };
 
-int registergame(char *playername, uint16_t port, uint32_t unique, unsigned char version[4]);
+int registergame(const char *playername, uint16_t port, const unsigned char version[4]);
 void unregistergame();
-int searchgames(unsigned char version[4]);
+int searchgames(const unsigned char version[4]);
 
 int initannouncer();
 void freeannouncer();

bomber.h

@@ -84,27 +84,22 @@ typedef struct player
 #define FLG_DEAD 2
 
 
-
+typedef struct sprite {
-typedef struct sprite
-{
 	int	flags;
 	int	xpos,ypos;
 	figure	*fig;
 } sprite;
 
-typedef struct damage
+typedef struct damage {
-{
 	int xpos,ypos;
 	int xsize,ysize;
 } damage;
 
-typedef struct list
+typedef struct list {
-{
 	void *next;
 } list;
 
-typedef struct bomb
+typedef struct bomb {
-{
 	struct bomb *next;
 	int type;
 	int xpos,ypos;
@@ -123,8 +118,7 @@ typedef struct bomb
 #define FLAMELIFE 15
 #define DECAYLIFE 15
 
-typedef struct flame
+typedef struct flame {
-{
 	struct flame *next;
 	int xpos,ypos;
 	int px,py;
@@ -138,16 +132,23 @@ typedef struct flame
 #define FL_LEFT 1
 #define FL_RIGHT 4
 
-typedef struct brickdecay
+typedef struct brickdecay {
-{
 	struct brickdecay *next;
 	int xpos,ypos;
 	int px,py;
 	int timer;
 } brickdecay;
 
-typedef struct generic
+typedef union listitem listitem;
-{
+union listitem {
+	listitem *next;
+	bomb b;
+	flame f;
+	brickdecay bc;
+	player p;
+};
+
+typedef struct generic {
 	struct generic *next;
 	int xpos,ypos;
 	int px,py;
@@ -158,13 +159,12 @@ typedef struct generic
 	int data1,data2;
 } generic;
 
-typedef struct bonustile
+typedef struct bonustile {
-{
 	struct bonustile *next;
 	int xpos,ypos;
 	int px,py;
 	int type;
-}bonustile;
+} bonustile;
 
 #define TILE_NONE -1
 #define TILE_BOMB 5
@@ -210,48 +210,8 @@ typedef struct bonustile
 
 extern char exitflag;
 
-extern player players[];
-extern sprite sprites[];
-extern gfxset gfxsets[NUMGFX];
 extern uchar needwhole;
 extern figure walking[MAXSETS][60];
-extern damage damages[];
-extern bomb bombs[];
-
-extern void centerx(player *pl);
-extern void centery(player *pl);
-extern void dropbomb(player *pl,int px,int py,int type);
-extern void adddetonate(bomb *bmb);
-extern void flameshaft(player *owner,int px,int py,int dx,int dy,int power);
-extern void detonatebomb(bomb *bmb);
-extern void initlist(void *first,int size,int num);
-extern void freeentry(void *entry);
-extern void addtail(void *header,void *entry);
-extern void delink(void *header,void *entry);
-extern void *allocentry();
-extern void adddecay(int px,int py);
-extern void trybonus(int px,int py);
-extern void addbonus(int px,int py,int type);
-extern void deletebonus(bonustile *bonus);
-extern void queuesequence(int xpos,int ypos,figure *fig,int count);
-extern void playonce(generic *gen);
-extern void processgenerics(void);
-extern void drawgenerics(void);
-extern void drawgeneric(generic *gen);
-extern void killplayer(player *pl);
-extern void adddeath(player *pl);
-extern void drawbigstring(int xpos,int ypos,char *str);
-extern void bigscrprintf(char *str, ...);
-extern void drawstring(int xpos,int ypos,char *str);
-extern void scrprintf(char *str, ...);
-extern int textx,texty,fontxsize,fontysize;
-extern void texthome(void);
-
-extern unsigned char field[32][32];
-extern void *info[32][32];
-extern unsigned char singleoptions[10];
-extern unsigned char gameoptions[10];
-extern int getmsg(int);
 
 #define GO_DENSITY 0
 #define GO_FLAMES 1
@@ -261,7 +221,7 @@ extern int getmsg(int);
 // network packet types
 // slave -> master packets
 #define PKT_MYDATA 0 // 4 bytes unique #,4 bytes frame #, 1 byte data
-#define PKT_JOIN 1 // 4 bytes unique #,16 bytes name
+#define PKT_JOIN 1 // 4 bytes version #,16 bytes name
 // master -> slave packets
 #define PKT_INVITE 9 // 4 bytes unique #, any # of 1:slot,16:name sets (-1 end)
 #define PKT_BEGIN 10 // clone of INVITE

draw.c

@@ -0,0 +1,448 @@
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <sys/types.h>
+#include <netdb.h>
+#include <sys/socket.h>
+#include <sys/time.h>
+#include <signal.h>
+#include <fcntl.h>
+#include <stdarg.h>
+
+#include "bomber.h"
+#include "draw.h"
+#include "game.h"
+#include "gfx.h"
+#include "utils.h"
+
+#ifndef DATADIR
+#define DATADIR "data"
+#endif
+
+#define NUMCHARACTERS 50
+
+static figure font[NUMCHARACTERS];
+static figure bigfont[NUMCHARACTERS];
+
+gfxset gfxsets[NUMGFX];
+static char walkingname[256];
+static char colorsetname[256];
+static char backgroundname[256];
+static char blocksname[256];
+static char blocksxname[256];
+static char bombs1name[256];
+static char bombs2name[256];
+static char flamesname[256];
+static char tilesname[256];
+static char deathname[256];
+static char fontname[256];
+static char bigfontname[256];
+
+figure blocks[3];
+figure blocksx[9];
+figure bombs1[MAXSETS][NUMBOMBFRAMES];
+figure bombs2[MAXSETS][NUMBOMBFRAMES];
+figure flamefigs[MAXSETS][NUMFLAMEFRAMES];
+figure tiles[15];
+figure death[NUMDEATHFRAMES];
+
+int fontxsize,fontysize;
+int bigfontxsize,bigfontysize,bigfontyspace;
+
+static int textx,texty;
+
+static char *remapstring="0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ.:!?\177/\\*-,>< =";
+static char asciiremap[256];
+
+/* On screen array variables */
+int arraynumx=15;
+int arraynumy=11;
+int arraystartx=20;
+int arraystarty=70;
+int arrayspacex=40;
+int arrayspacey=36;
+
+static sprite sprites[MAXSPRITES];
+static int spritesused=0;
+
+#define IBUFFLEN 1024
+int ileft=0,ihand=0,byteswide;
+unsigned char ibuff[IBUFFLEN],*itake;
+
+static void freegfxset(gfxset *gs) {
+	if(gs->gs_pic) free(gs->gs_pic);
+	gs->gs_pic=0;
+}
+
+static int myci() {
+	if (!ileft) {
+		ileft=read(ihand,ibuff,IBUFFLEN);
+
+		if(!ileft) return -1;
+		itake=ibuff;
+	}
+	ileft--;
+	return *itake++;
+}
+
+static int dopcxreal(char *name,gfxset *gs) {
+	int xs,ys;
+	int i,j,k;
+	int totalsize;
+	int width,height;
+	unsigned char *bm,*lp;
+	char tname[256];
+
+	memset(gs,0,sizeof(gfxset));
+	ileft=0;
+	sprintf(tname,DATADIR "/%s",name);
+	ihand=open(tname,O_RDONLY);
+	if(ihand<0) {
+		char tname2[256];
+		sprintf(tname2,"%s.pcx",tname);
+		ihand=open(tname2,O_RDONLY);
+		if(ihand<0)
+			return 1;
+	}
+	if(myci()!=10) {close(ihand);return 2;} // 10=zsoft .pcx
+	if(myci()!=5) {close(ihand);return 3;} // version 3.0
+	if(myci()!=1) {close(ihand);return 4;} //encoding method
+	if(myci()!=8) {close(ihand);return 5;} //bpp
+	xs=myci();
+	xs|=myci()<<8;
+	ys=myci();
+	ys|=myci()<<8;
+	width=myci();
+	width|=myci()<<8;
+	height=myci();
+	height|=myci()<<8;
+	width=width+1-xs;
+	height=height+1-ys;
+	for(i=0;i<48+4;++i) myci();
+	myci();
+	if(myci()!=1) {close(ihand);return 6;} // # of planes
+	byteswide=myci();
+	byteswide|=myci()<<8;
+	i=myci();
+	i|=myci()<<8;
+//	if(i!=1) {close(ihand);return 7;} // 1=color/bw,2=grey
+	for(i=0;i<58;++i) myci();
+	totalsize=height*byteswide;
+	bm=malloc(totalsize+1);
+	if(!bm) {close(ihand);return 8;} // no memory
+	gs->gs_pic=bm;
+	gs->gs_xsize=width;
+	gs->gs_ysize=height;
+	while(height--) {
+		lp=bm;
+		i=byteswide;
+		while(i>0) {
+			j=myci();
+			if(j<0xc0) {
+				*lp++=j;
+				--i;
+			} else {
+				j&=0x3f;
+				k=myci();
+				while(j-- && i) {
+					*lp++=k;
+					--i;
+				}
+			}
+		}
+		bm+=width;
+	}
+	lseek(ihand,-0x300,SEEK_END);
+	read(ihand,gs->gs_colormap,0x300);
+	close(ihand);
+	return 0;
+}
+
+static int dopcx(char *name,gfxset *gs) {
+	int err;
+
+	err=dopcxreal(name,gs);
+	if(err)
+		printf("Error loading \"%s\":code %d\n",name,err);
+	return err;
+}
+
+static void getgroup(char *name,gfxset *colorgs,figure *fig,int count) {
+	int err;
+	int i;
+	gfxset gs;
+
+	err=dopcx(name,&gs);
+	if(err) exit(1000+err);
+	createinout(&gs);
+	for(i=0;i<MAXSETS;++i,fig+=count,++colorgs) {
+		if(!colorgs->gs_pic) continue;
+		memmove(gs.gs_colormap,colorgs->gs_colormap,
+			sizeof(gs.gs_colormap));
+		createinout(&gs);
+		gfxfetch(&gs,fig,count);
+	}
+	freegfxset(&gs);
+}
+
+static void getsingle(char *name,figure *fig,int count) {
+	gfxset gs;
+	int err;
+
+	err=dopcx(name,&gs);
+	if(err) exit(1000+err);
+	createinout(&gs);
+	gfxfetch(&gs,fig,count);
+	freegfxset(&gs);
+}
+
+static void texthome(void) {
+	textx=texty=10;
+}
+
+// static void drawstring(int xpos,int ypos,char *str) {
+// 	char ch;
+// 
+// 	while((ch=*str++)) {
+// 		drawfigure(xpos,ypos,font+asciiremap[toupper(ch)]);
+// 		xpos+=fontxsize;
+// 	}
+// }
+
+void drawbigstring(int xpos,int ypos,char *str) {
+	char ch;
+
+	while('\0' != (ch=*str++)) {
+		drawfigure(xpos,ypos,bigfont+asciiremap[toupper(ch)]);
+		xpos+=bigfontxsize;
+	}
+}
+
+void centerbig(int y,char *str) {
+	int w;
+
+	w=strlen(str)*bigfontxsize;
+	drawbigstring((IXSIZE-w)>>1,y,str);
+}
+
+// static void scrprintf(char *str,...) {
+// 	char output[256],*p,*p2;
+// 	va_list ap;
+// 
+// 	va_start(ap, str);
+// 
+// 	vsprintf(output,str,ap);
+// 	p=output;
+// 	for(;;) {
+// 		p2=p;
+// 		while(*p2 && *p2!='\n') ++p2;
+// 		if(*p2) {
+// 			*p2=0;
+// 			drawstring(textx,texty,p);
+// 			texty+=fontysize;
+// 			textx=10;
+// 			p=p2+1;
+// 		} else {
+// 			drawstring(textx,texty,p);
+// 			textx+=fontxsize*(p2-p);
+// 			break;
+// 		}
+// 	}
+// 	copyup();
+// }
+
+static void bigscrprintf(char *str,...) {
+	char output[256],*p,*p2;
+	va_list ap;
+
+	va_start(ap, str);
+	vsprintf(output,str,ap);
+	p=output;
+	for(;;) {
+		p2=p;
+		while(*p2 && *p2!='\n') ++p2;
+		if(*p2) {
+			*p2=0;
+			drawbigstring(textx,texty,p);
+			texty+=bigfontysize;
+			textx=10;
+			p=p2+1;
+		} else {
+			drawbigstring(textx,texty,p);
+			textx+=bigfontxsize*(p2-p);
+			break;
+		}
+	}
+	copyup();
+}
+
+void addsprite(int x,int y,figure *fig) {
+	sprite *sp;
+
+	if(spritesused==MAXSPRITES) return;
+	sp=sprites+spritesused++;
+	sp->flags=0;
+	sp->xpos=x;
+	sp->ypos=y;
+	sp->fig=fig;
+}
+
+void plotsprites(void) {
+	int i;
+	sprite *sp;
+
+	sp=sprites;
+	for(i=0;i<spritesused;++i) {
+		drawfigure(sp->xpos,sp->ypos,sp->fig);
+		++sp;
+	}
+}
+
+void erasesprites(void) {
+	int i;
+	sprite *sp;
+	figure *fig;
+
+	sp=sprites;
+	for(i=0;i<spritesused;++i) {
+		fig=sp->fig;
+
+		solidcopy(&background,
+			sp->xpos+fig->xdelta,sp->ypos+fig->ydelta,
+			fig->xsize,fig->ysize);
+		++sp;
+	}
+}
+
+void clearsprites(void) {
+	int i;
+	sprite *sp;
+	figure *fig;
+
+	sp=sprites;
+	for(i=0;i<spritesused;++i) {
+		fig=sp->fig;
+
+		clearrect(sp->xpos+fig->xdelta,sp->ypos+fig->ydelta,
+			fig->xsize,fig->ysize);
+		++sp;
+	}
+}
+
+void clearspritelist(void) {
+	spritesused=0;
+}
+
+int tovideox(int x) {
+	return (x>>FRACTION)+arraystartx;
+}
+
+int tovideoy(int y) {
+	return (y>>FRACTION)+arraystarty;
+}
+
+int screentoarrayx(int x) {
+	x+=arrayspacex << (FRACTION+2);
+	return ((x>>FRACTION)+(arrayspacex>>1))/arrayspacex-4;
+}
+
+int screentoarrayy(int y) {
+	y+=arrayspacey << (FRACTION+2);
+	return ((y>>FRACTION)+(arrayspacey>>1))/arrayspacey-4;
+}
+
+int arraytoscreenx(int x) {
+	return arrayspacex*x<<FRACTION;
+}
+
+int arraytoscreeny(int y) {
+	return arrayspacey*y<<FRACTION;
+}
+
+static void loadfonts(void) {
+	int i,j;
+	char *p;
+
+	getsingle(fontname,font,NUMCHARACTERS);
+	getsingle(bigfontname,bigfont,NUMCHARACTERS);
+	fontxsize=8;
+	fontysize=12;
+	bigfontxsize=16;
+	bigfontysize=24;
+	bigfontyspace=32;
+	p=remapstring;
+	j=0;while(*p && *p!=' ') ++p,++j;
+	memset(asciiremap,j,sizeof(asciiremap));
+	p=remapstring;
+	i=0;
+	while(*p && i<40)
+		asciiremap[(int)*p++]=i++;
+}
+
+void loadgfx() {
+	gfxset *gs;
+	gfxset *colorgs;
+	int err;
+	int i;
+	char name[256];
+
+	strcpy(walkingname,"walk");
+	strcpy(colorsetname,"pal");
+	strcpy(backgroundname,"field0");
+	strcpy(blocksname,"blocks3");
+	strcpy(blocksxname,"blocks3x");
+	strcpy(bombs1name,"bomb1");
+	strcpy(bombs2name,"bomb2");
+	strcpy(flamesname,"flames");
+	strcpy(tilesname,"tiles");
+	strcpy(deathname,"death1");
+	strcpy(fontname,"font");
+	strcpy(bigfontname,"bigfont");
+
+	gs=malloc((MAXSETS+1)*sizeof(gfxset));
+	if(!gs)
+		nomem("loadgfx");
+	colorgs=gs+1;
+
+	for(i=0;i<MAXSETS;++i) {
+		sprintf(name,"%s%d",colorsetname,i);
+		err=dopcx(name,colorgs+i);
+		if(err) continue;
+	}
+
+	loadfonts();
+	texthome();
+	bigscrprintf("Loading graphics...\n");
+
+	err=dopcx(backgroundname,gs);
+	if(err) exit(1000+err);
+	createinout(gs);
+	solidfetch(gs,&background);
+	solidfetch(gs,&backgroundoriginal);
+	freegfxset(gs);
+
+	bigscrprintf("Loading blocks\n");
+	getsingle(blocksname,blocks,3);
+	bigscrprintf("Loading block explosions\n");
+	getsingle(blocksxname,blocksx,9);
+	bigscrprintf("Loading walking figures\n");
+	getgroup(walkingname,colorgs,walking[0],NUMWALKFRAMES);
+	bigscrprintf("Loading normal bombs\n");
+	getgroup(bombs1name,colorgs,bombs1[0],NUMBOMBFRAMES);
+	bigscrprintf("Loading controlled bombs\n");
+	getgroup(bombs2name,colorgs,bombs2[0],NUMBOMBFRAMES);
+	bigscrprintf("Loading flames\n");
+//	getgroup(flamesname,colorgs,flamefigs[0],NUMFLAMEFRAMES);
+	getsingle(flamesname,flamefigs[0],NUMFLAMEFRAMES);
+	bigscrprintf("Loading bonus tiles\n");
+	getsingle(tilesname,tiles,15);
+	bigscrprintf("Loading death sequence\n");
+	getsingle(deathname,death,NUMDEATHFRAMES);
+
+	for(i=0;i<MAXSETS;++i)
+		freegfxset(colorgs+i);
+	free(gs);
+	bigscrprintf("Done loading graphics\n");
+}

draw.h

@@ -0,0 +1,38 @@
+#ifndef DRAW_H
+#define DRAW_H
+
+void loadgfx(void);
+
+void drawbigstring(int xpos,int ypos,char *str);
+
+void centerbig(int y,char *str);
+
+void addsprite(int x,int y,figure *fig);
+void plotsprites(void);
+void erasesprites(void);
+void clearsprites(void);
+void clearspritelist(void);
+
+int tovideox(int x);
+int tovideoy(int y);
+
+int screentoarrayx(int x);
+int screentoarrayy(int y);
+int arraytoscreenx(int x);
+int arraytoscreeny(int y);
+
+extern int bigfontxsize,bigfontysize,bigfontyspace;
+
+/* On screen array variables */
+extern int arraynumx, arraynumy, arraystartx, arraystarty, arrayspacex, arrayspacey;
+
+/* Animation specific #defines */
+#define NUMBOMBFRAMES 10
+#define NUMWALKFRAMES 60
+#define NUMFLAMEFRAMES 80
+#define NUMDEATHFRAMES 41
+
+
+extern figure blocks[3], blocksx[9], bombs1[MAXSETS][NUMBOMBFRAMES], bombs2[MAXSETS][NUMBOMBFRAMES], flamefigs[MAXSETS][NUMFLAMEFRAMES], tiles[15], death[NUMDEATHFRAMES];
+
+#endif

game.c

@@ -0,0 +1,944 @@
+
+#include "bomber.h"
+#include "game.h"
+#include "gfx.h"
+#include "network.h"
+#include "draw.h"
+#include "utils.h"
+#include "sound.h"
+#include "menu.h"
+#include "list.h"
+
+static int gameframe;
+
+static list activebombs;
+static list activedecays;
+static list activebonus;
+static list activegeneric;
+
+static bomb *detonated[MAXBOMBSDETONATED];
+static int detonateput=0;
+static int detonatetake=0;
+
+static list activeflames;
+static list activeplayers;
+
+#define REGISTERLEN (1+4+4+4+16+1)
+
+figure walking[MAXSETS][NUMWALKFRAMES];
+solid background,backgroundoriginal;
+
+/* The playfield array, contains FIELD_* equates */
+unsigned char field[32][32];
+void *info[32][32];
+
+int gamemode = 0;
+char exitflag = 0;
+static int framecount = 0;
+
+char playername[16];
+
+static int gountil, mycount;
+
+static int bonustotal;
+static const int bonuschances[]= {
+TILE_BOMB,20,
+TILE_FLAME,20,
+TILE_CONTROL,2,
+TILE_GOLDFLAME,2,
+TILE_SKATES,20,
+TILE_TURTLE,5,
+TILE_NONE,160
+};
+
+static unsigned char gameoptions[10];
+
+static const unsigned char playerpositions[] = { /* color, x, y */
+2,0,0,
+3,14,10,
+4,14,0,
+5,0,10,
+1,6,0,
+6,8,10,
+7,0,6,
+8,14,4,
+};
+
+static void initplayer(int color,int x,int y,int controller) {
+	player *pl;
+
+	pl=allocentry();
+	if(!pl)
+		nomem("Couldn't get player structure (allocentry())");
+	addtail(&activeplayers,pl);
+	memset(pl,0,sizeof(player));
+	pl->xpos=arraytoscreenx(x);
+	pl->ypos=arraytoscreeny(y);
+	pl->color=color;
+	pl->speed=SPEEDSTART;
+	pl->flags=0;
+	pl->fixx=-4;
+	pl->fixy=-40;
+	pl->flamelength=gameoptions[GO_FLAMES]+1;
+	pl->bombsavailable=gameoptions[GO_BOMBS]+1;
+	pl->controller=controller;
+	field[y][x]=FIELD_EMPTY;
+	if(x) field[y][x-1]=FIELD_EMPTY;
+	if(y) field[y-1][x]=FIELD_EMPTY;
+	if(x<arraynumx-1) field[y][x+1]=FIELD_EMPTY;
+	if(y<arraynumy-1) field[y+1][x]=FIELD_EMPTY;
+}
+
+static void initplayers(void) {
+	int i;
+	const unsigned char *p;
+	int c,x,y;
+
+	if(!network) {
+		initplayer(2,0,0,-1);
+		return;
+	}
+	p=playerpositions;
+	for(i=0;i<MAXNETNODES;++i) {
+		if(!netnodes[i].used) continue;
+		c=*p++;
+		x=*p++;
+		y=*p++;
+		initplayer(c,x,y,i);
+	}
+}
+
+static void firstzero(void) {
+	gountil=mycount=mydatacount=0;
+	memset(latestactions,0,sizeof(latestactions));
+	memset(latestcounts,0,sizeof(latestcounts));
+	actionput=actioncount=0;
+}
+
+static void initgame() {
+	int i,j;
+	int x,y;
+	int bl;
+	const int *p;
+	int comp;
+
+	if (network != NETWORK_SLAVE)
+		set_game_options(configopts);
+	gameframe=0;
+	allocthings();
+	initheader(&activebombs);
+	initheader(&activeflames);
+	initheader(&activedecays);
+	initheader(&activebonus);
+	initheader(&activeplayers);
+	initheader(&activegeneric);
+
+	detonateput=detonatetake=0;
+
+	p=bonuschances;
+	bonustotal=0;
+	for(;;) {
+		i=*p++;
+		if(i==TILE_NONE) break;
+		bonustotal+=*p++;
+	}
+	bonustotal += 64*(3-gameoptions[GO_GENEROSITY]);
+	memset(field,0,sizeof(field));
+	comp=gameoptions[GO_DENSITY];
+	for(j=0;j<arraynumy;++j)
+		for(i=0;i<arraynumx;++i) {
+/*			if((i&j)&1) {
+				field[j][i]=FIELD_BORDER;
+			} else*/
+				field[j][i]=
+				(myrand()&3)>=comp ? FIELD_BRICK : FIELD_EMPTY;
+		}
+
+	solidcopyany(&backgroundoriginal,&background,0,0,IXSIZE,IYSIZE);
+
+	initplayers();
+
+	for(j=0;j<arraynumy;++j) {
+		y=arraystarty+j*arrayspacey;
+		for(i=0;i<arraynumx;++i) {
+			x=arraystartx+i*arrayspacex;
+			bl=field[j][i];
+			if(bl==FIELD_BORDER) bl=2;
+			else if(bl==FIELD_BRICK) bl=1;
+			else continue;
+			drawfigureany(x,y,blocks+bl,&background);
+		}
+	}
+	solidcopy(&background,0,0,IXSIZE,IYSIZE);
+	copyup();
+}
+
+
+void run_single_player(void) {
+	int code;
+	network=0;
+
+	firstzero();
+	do {
+		initgame();
+		while(!(code=iterate())) ++framecount;
+	} while (code != CODE_QUIT);
+
+	gamemode=0;
+}
+
+void run_network_game(void) {
+	int code;
+
+	firstzero();
+	do {
+		initgame();
+		while(!(code=iterate())) ++framecount;
+	} while (code != CODE_QUIT);
+
+	network = 0;
+	gamemode = 0;
+}
+
+static void addflame(player *owner,int px,int py) {
+	flame *fl,*fl2;
+
+	fl=allocentry();
+	if(!fl) return;
+	addtail(&activeflames,fl);
+	field[py][px]=FIELD_FLAME;
+	info[py][px]=fl;
+	fl->px=px;
+	fl->py=py;
+	fl->xpos=arraytoscreenx(px);
+	fl->ypos=arraytoscreeny(py);
+	fl->owner=owner;
+	if(px && field[py][px-1]==FIELD_FLAME) {
+		fl2=info[py][px-1];
+		fl->lurd|=FL_LEFT;
+		fl2->lurd|=FL_RIGHT;
+	}
+	if(py && field[py-1][px]==FIELD_FLAME) {
+		fl2=info[py-1][px];
+		fl->lurd|=FL_UP;
+		fl2->lurd|=FL_DOWN;
+	}
+	if(px<arraynumx-1 && field[py][px+1]==FIELD_FLAME) {
+		fl2=info[py][px+1];
+		fl->lurd|=FL_RIGHT;
+		fl2->lurd|=FL_LEFT;
+	}
+	if(py<arraynumy-1 && field[py+1][px]==FIELD_FLAME) {
+		fl2=info[py+1][px];
+		fl->lurd|=FL_DOWN;
+		fl2->lurd|=FL_UP;
+	}
+}
+
+static void dropbomb(player *pl,int px,int py,int type){
+	bomb *bmb;
+
+	if(field[py][px]!=FIELD_EMPTY) return;
+	bmb=allocentry();
+	if(!bmb) return;
+	playsound(3);
+	addtail(&activebombs,bmb);
+
+	--(pl->bombsavailable);
+	field[py][px]=FIELD_BOMB;
+	info[py][px]=bmb;
+	bmb->type=type;
+	bmb->px=px;
+	bmb->py=py;
+	bmb->xpos=arraytoscreenx(px);
+	bmb->ypos=arraytoscreeny(py);
+	bmb->power=pl->flamelength;
+	bmb->owner=pl;
+}
+
+static void adddetonate(bomb *bmb) {
+	if(bmb->type==BOMB_OFF) return;
+
+	bmb->type=BOMB_OFF;
+	field[bmb->py][bmb->px]=FIELD_EXPLODING;
+	info[bmb->py][bmb->px]=0;
+	detonated[detonateput++]=bmb;
+	detonateput%=MAXBOMBSDETONATED;
+}
+
+static void processbombs() {
+	bomb *bmb;
+
+	bmb=activebombs.next;
+	while(bmb) {
+		switch(bmb->type) {
+		case BOMB_NORMAL:
+			++bmb->timer;
+			if(bmb->timer==BOMBLIFE)
+				adddetonate(bmb);
+			++(bmb->figcount);
+			break;
+		case BOMB_CONTROLLED:
+			++(bmb->figcount);
+			break;
+		}
+		bmb=bmb->next;
+	}
+}
+
+static void adddecay(int px,int py) {
+	brickdecay *bd;
+	int xpos,ypos;
+
+	bd=allocentry();
+	if(!bd) return;
+	field[py][px]=FIELD_EXPLODING;
+	bd->xpos=arraytoscreenx(px);
+	bd->ypos=arraytoscreeny(py);
+	bd->px=px;
+	bd->py=py;
+	addtail(&activedecays,bd);
+	xpos=tovideox(bd->xpos);
+	ypos=tovideoy(bd->ypos);
+	solidcopyany(&backgroundoriginal,&background,xpos,ypos,
+		arrayspacex,arrayspacey);
+	solidcopy(&background,xpos,ypos,arrayspacex,arrayspacey);
+}
+
+static void addbonus(int px,int py,int type) {
+	bonustile *bonus;
+
+	bonus=allocentry();
+	if(!bonus) return;
+	addtail(&activebonus,bonus);
+	bonus->px=px;
+	bonus->py=py;
+	bonus->xpos=arraytoscreenx(px);
+	bonus->ypos=arraytoscreeny(py);
+	bonus->type=type;
+	field[py][px]=FIELD_BONUS;
+	info[py][px]=bonus;
+}
+
+static void trybonus(int px,int py) {
+	int i=0, r;
+	const int *p;
+
+	if(field[py][px]!=FIELD_EMPTY) return;
+	p=bonuschances;
+	r=myrand()%bonustotal;
+	while(r>=0) {
+		i=*p++;
+		r-=*p++;
+	}
+	if(i==TILE_NONE) return;
+	addbonus(px,py,i);
+}
+
+static void deletebonus(bonustile *bonus) {
+	int px,py;
+
+	px=bonus->px;
+	py=bonus->py;
+	field[py][px]=0;
+	info[py][px]=0;
+	delink(&activebonus,bonus);
+}
+
+static void flameshaft(player *owner,int px,int py,int dx,int dy,int power) {
+	int there;
+	bomb *bmb;
+
+	while(power--) {
+		px+=dx;
+		py+=dy;
+		if(px<0 || py<0 || px>=arraynumx || py>=arraynumy) break;
+		there=field[py][px];
+		switch(there) {
+		case FIELD_BOMB:
+			bmb=info[py][px];
+			adddetonate(bmb);
+			break;
+		case FIELD_EMPTY:
+			addflame(owner,px,py);
+			break;
+		case FIELD_BRICK:
+			adddecay(px,py);
+			power=0;
+			break;
+		case FIELD_BONUS:
+			deletebonus(info[py][px]);
+			power=0;
+			break;
+		case FIELD_BORDER:
+		case FIELD_EXPLODING:
+		default:
+			power=0;
+		case FIELD_FLAME:
+			break;
+		}
+	}
+}
+
+static void detonatebomb(bomb *bmb) {
+	int px,py;
+	int power;
+	player *owner;
+
+	++(bmb->owner->bombsavailable);
+	px=bmb->px;
+	py=bmb->py;
+	power=bmb->power;
+	owner=bmb->owner;
+	delink(&activebombs,bmb);
+	addflame(owner,px,py);
+	flameshaft(owner,px,py,-1,0,power);
+	flameshaft(owner,px,py,0,-1,power);
+	flameshaft(owner,px,py,1,0,power);
+	flameshaft(owner,px,py,0,1,power);
+}
+
+static void dodetonations(void) {
+	int i=0;
+
+	while(detonatetake!=detonateput) {
+		++i;
+		detonatebomb(detonated[detonatetake]);
+		detonatetake=(detonatetake+1) % MAXBOMBSDETONATED;
+	}
+	if(i) playsound((myrand()&1) ? 0 : 4);
+}
+
+static void processflames(void) {
+	flame *fl,*fl2;
+
+	fl=activeflames.next;
+	while(fl) {
+		++(fl->timer);
+		fl=fl->next;
+	}
+	fl=activeflames.next;
+	while(fl) {
+		if(fl->timer==FLAMELIFE)
+		{
+			field[fl->py][fl->px]=FIELD_EMPTY;
+			info[fl->py][fl->px]=0;
+			fl2=fl;
+			fl=fl->next;
+			delink(&activeflames,fl2);
+		} else
+			fl=fl->next;
+	}
+}
+
+static void processdecays() {
+	brickdecay *bd,*bd2;
+
+	bd=activedecays.next;
+	while(bd) {
+		++(bd->timer);
+		if(bd->timer==DECAYLIFE) {
+			field[bd->py][bd->px]=FIELD_EMPTY;
+			trybonus(bd->px,bd->py);
+			bd2=bd;
+			bd=bd->next;
+			delink(&activedecays,bd2);
+		} else
+			bd=bd->next;
+	}
+}
+
+static void drawbombs(void) {
+	int j;
+	bomb *bmb;
+	struct figure *figtab;
+	int color;
+	int xpos,ypos;
+
+	bmb=activebombs.next;
+	while(bmb) {
+		color=bmb->owner->color;
+		figtab=(bmb->type==BOMB_NORMAL) ? bombs1[color] : bombs2[color];
+		j=bmb->figcount % (NUMBOMBFRAMES<<1);
+		if(j>=NUMBOMBFRAMES) j=(NUMBOMBFRAMES<<1)-j-1;
+		xpos=tovideox(bmb->xpos);
+		ypos=tovideoy(bmb->ypos)-3;
+
+		addsprite(xpos,ypos,figtab+j);
+		bmb=bmb->next;
+	}
+}
+
+static void drawflames(void) {
+	flame *fl;
+	int xpos,ypos;
+	int color;
+	int fig;
+
+	fl=activeflames.next;
+	while(fl) {
+		color=fl->owner->color;
+		xpos=tovideox(fl->xpos);
+		ypos=tovideoy(fl->ypos);
+		fig=(fl->timer*10)/FLAMELIFE;
+		if(fig>=5) fig=9-fig;
+		fig+=5*fl->lurd;
+		addsprite(xpos,ypos,flamefigs[0/* color */]+fig);
+		fl=fl->next;
+	}
+}
+
+static void drawdecays() {
+	brickdecay *bd;
+
+	bd=activedecays.next;
+	while(bd) {
+		addsprite(tovideox(bd->xpos),tovideoy(bd->ypos),
+			blocksx+(bd->timer*9)/DECAYLIFE);
+		bd=bd->next;
+	}
+}
+
+static void drawbonus() {
+	bonustile *bonus;
+
+	bonus=activebonus.next;
+	while(bonus) {
+		addsprite(tovideox(bonus->xpos),tovideoy(bonus->ypos),
+			tiles+bonus->type);
+		bonus=bonus->next;
+	}
+}
+
+static void drawplayers() {
+	player *pl;
+	int xpos,ypos;
+
+	pl=activeplayers.next;
+
+	while(pl) {
+		if(!(pl->flags & FLG_DEAD)) {
+			if(!pl->figure)
+				pl->figure=walking[pl->color]+30;
+			xpos=tovideox(pl->xpos)+pl->fixx;
+			ypos=tovideoy(pl->ypos)+pl->fixy;
+			addsprite(xpos,ypos,pl->figure);
+		}
+		pl=pl->next;
+	}
+}
+
+static void detonatecontrolled(player *pl) {
+	bomb *bmb;
+
+	bmb=activebombs.next;
+	while(bmb) {
+		if(bmb->owner==pl && bmb->type==BOMB_CONTROLLED)
+			adddetonate(bmb);
+		bmb=bmb->next;
+	}
+}
+
+static void playonce(generic *gen) {
+	if(gen->timer==gen->data1)
+		delink(&activegeneric,gen);
+}
+
+static void drawgeneric(generic *gen) {
+	addsprite(gen->xpos,gen->ypos,((figure *)(gen->ptr1))+gen->timer);
+}
+
+static void queuesequence(int xpos,int ypos,figure *fig,int count) {
+	generic *gen;
+
+	gen=allocentry();
+	if(!gen) return;
+	gen->xpos=xpos;
+	gen->ypos=ypos;
+	gen->data1=count;
+	gen->process=playonce;
+	gen->draw=drawgeneric;
+	gen->ptr1=fig;
+	addtail(&activegeneric,gen);
+}
+
+static void adddeath(player *pl) {
+	int xpos,ypos;
+
+	xpos=tovideox(pl->xpos)+pl->fixx-10;
+	ypos=tovideoy(pl->ypos)+pl->fixy;
+	queuesequence(xpos,ypos,death,NUMDEATHFRAMES);
+}
+
+static void killplayer(player *pl) {
+	pl->flags|=FLG_DEAD;
+	playsound(2);
+	adddeath(pl);
+	detonatecontrolled(pl);
+}
+
+static void processgenerics(void) {
+	generic *gen,*gen2;
+
+	gen=activegeneric.next;
+	while(gen) {
+		gen2=gen;
+		gen=gen->next;
+		++(gen2->timer);
+		gen2->process(gen2);
+	}
+}
+
+static void drawgenerics(void) {
+	generic *gen;
+
+	gen=activegeneric.next;
+	while(gen) {
+		gen->draw(gen);
+		gen=gen->next;
+	}
+}
+
+static int centerxchange(player *pl) {
+	int speed;
+	int val;
+	int line;
+	int max;
+
+	max=arrayspacex<<FRACTION;
+	speed=pl->speed;
+	val=pl->xpos+(max<<2);
+	val%=max;
+	line=max>>1;
+	if(val<line) {
+		if(val-speed<0)
+			return -val;
+		else
+			return -speed;
+	} else if(val>=line) {
+		if(val+speed>max)
+			return max-val;
+		else
+			return speed;
+	}
+	return 0;
+}
+
+static void centerx(player *pl) {
+	pl->xpos+=centerxchange(pl);
+}
+
+static int centerychange(player *pl) {
+	int speed;
+	int val;
+	int line;
+	int max;
+
+	max=arrayspacey<<FRACTION;
+	speed=pl->speed;
+	val=pl->ypos+(max<<2);
+	val%=max;
+	line=max>>1;
+	if(val<line)
+	{
+		if(val-speed<0)
+			return -val;
+		else
+			return -speed;
+	} else if(val>=line)
+	{
+		if(val+speed>max)
+			return max-val;
+		else
+			return speed;
+	}
+	return 0;
+}
+
+static void centery(player *pl) {
+	pl->ypos+=centerychange(pl);
+}
+
+#define SGN(x) ((x)==0 ? 0 : ((x)<0 ? -1 : 1))
+
+static void trymove(player *pl,int dx,int dy) {
+	int wx,wy;
+	int sx,sy;
+	int there;
+	int px,py;
+	static int depth=0;
+	int tx,ty;
+
+	++depth;
+	sx=(dx*(arrayspacex+1)) << (FRACTION-1);
+	sy=(dy*(arrayspacey+1)) << (FRACTION-1);
+
+	wx=screentoarrayx(pl->xpos+sx);
+	wy=screentoarrayy(pl->ypos+sy);
+	px=screentoarrayx(pl->xpos);
+	py=screentoarrayy(pl->ypos);
+
+	if(wx<0 || wx>=arraynumx || wy<0 || wy>=arraynumy) 	{
+		--depth;
+		return;
+	}
+	there=field[wy][wx];
+	if((px!=wx || py!=wy) &&
+		(there==FIELD_BRICK||there==FIELD_BOMB||there==FIELD_BORDER))
+	{
+		if(dx && !dy) {
+			ty=centerychange(pl);
+			if(ty && depth==1)
+				trymove(pl,0,-SGN(ty));
+
+		} else if(dy && !dx) {
+			tx=centerxchange(pl);
+			if(tx && depth==1)
+				trymove(pl,-SGN(tx),0);
+		}
+
+	} else {
+		pl->xpos+=dx*pl->speed;
+		pl->ypos+=dy*pl->speed;
+		if(dx && !dy) centery(pl);
+		if(dy && !dx) centerx(pl);
+	}
+	--depth;
+}
+
+
+static void applybonus(player *pl,bonustile *bonus) {
+	int type;
+	int maxflame;
+
+	maxflame=arraynumx>arraynumy ? arraynumx : arraynumy;
+	type=bonus->type;
+	deletebonus(bonus);
+	switch(type)
+	{
+	case TILE_BOMB:
+		++(pl->bombsavailable);
+		break;
+	case TILE_FLAME:
+		if(pl->flamelength<maxflame)
+			++(pl->flamelength);
+		break;
+	case TILE_GOLDFLAME:
+		pl->flamelength=maxflame;
+		break;
+	case TILE_CONTROL:
+		pl->flags|=FLG_CONTROL;
+		break;
+	case TILE_SKATES:
+		if (pl->speed < SPEEDSTART) {
+			pl->speed = SPEEDSTART;
+		} else {
+			pl->speed+=SPEEDDELTA;
+		}
+		if(pl->speed>SPEEDMAX) pl->speed=SPEEDMAX;
+		break;
+	case TILE_TURTLE:
+		pl->speed=SPEEDTURTLE;
+		pl->speedturtle_timeout=SPEEDTURTLE_TIMEOUT;
+		break;
+	}
+}
+
+static void doplayer(player *pl) {
+	int last;
+	int color;
+	int speed;
+	int px,py;
+	int there;
+	int flags;
+	int what;
+
+	if(pl->controller==-1)
+		what=myaction;
+	else
+		what=actions[pl->controller];
+
+	flags=pl->flags;
+	if(flags&FLG_DEAD) return;
+	color=pl->color;
+	last=pl->doing;
+	pl->doing=what;
+	speed=pl->speed;
+	px=screentoarrayx(pl->xpos);
+	py=screentoarrayy(pl->ypos);
+	there=field[py][px];
+
+	if(what==ACT_QUIT) {
+		killplayer(pl);
+		return;
+	}
+
+	if(there==FIELD_BONUS) {
+		playsound((myrand()&1) ? 1 : 5);
+		applybonus(pl,info[py][px]);
+	} else if(there==FIELD_FLAME) {
+		killplayer(pl);
+		return;
+	}
+
+//	if(what&ACT_TURBO) speed<<=2;
+	if(what&ACT_PRIMARY) {
+		if(there==FIELD_EMPTY && pl->bombsavailable)
+			dropbomb(pl,px,py,
+				(flags&FLG_CONTROL) ? BOMB_CONTROLLED :BOMB_NORMAL);
+	}
+	if(what&ACT_SECONDARY && (flags&FLG_CONTROL))
+		detonatecontrolled(pl);
+
+	switch(what&ACT_MASK) {
+	case ACT_UP:
+		trymove(pl,0,-1);
+		pl->figcount=(pl->figcount+1)%15;
+		pl->figure=walking[color]+pl->figcount+15;
+		break;
+	case ACT_DOWN:
+		trymove(pl,0,1);
+		pl->figcount=(pl->figcount+1)%15;
+		pl->figure=walking[color]+pl->figcount+30;
+		break;
+	case ACT_LEFT:
+		trymove(pl,-1,0);
+		pl->figcount=(pl->figcount+1)%15;
+		pl->figure=walking[color]+pl->figcount+45;
+		break;
+	case ACT_RIGHT:
+		trymove(pl,1,0);
+		pl->figcount=(pl->figcount+1)%15;
+		pl->figure=walking[color]+pl->figcount;
+		break;
+	case ACT_NONE:
+		break;
+	}
+
+	if (pl->speedturtle_timeout > 0) {
+		pl->speedturtle_timeout--;
+		if (0 == pl->speedturtle_timeout) {
+			if (pl->speed < SPEEDSTART) pl->speed = SPEEDSTART;
+		}
+	}
+}
+
+static void processplayers(void) {
+	player *pl,*pl2;
+
+	pl=activeplayers.next;
+	while(pl) {
+		pl2=pl;
+		pl=pl->next;
+		doplayer(pl2);
+	}
+}
+
+static void processquits(void) {
+	int i;
+
+	if(network!=NETWORK_SLAVE) return;
+	for(i=0;i<MAXNETNODES;++i)
+	{
+		if(netnodes[i].used && actions[i]==ACT_QUIT)
+			netnodes[i].used=0;
+	}
+}
+
+static int getaction(void) {
+	int what;
+
+	what=ACT_NONE;
+	if(checkpressed(MYLEFT)) what=ACT_LEFT;
+	else if(checkpressed(MYRIGHT)) what=ACT_RIGHT;
+	else if(checkpressed(MYDOWN)) what=ACT_DOWN;
+	else if(checkpressed(MYUP)) what=ACT_UP;
+	else if(checkdown(13)) what=ACT_ENTER;
+	else if(checkdown(0x1b)) what=ACT_QUIT;
+
+	if(checkdown(' '))
+		what|=ACT_PRIMARY;
+	if(checkdown('b'))
+		what|=ACT_SECONDARY;
+
+	return what;
+}
+
+int iterate(void) {
+	int i;
+	static int deathcount=0;
+
+	mypause();
+	scaninput();
+
+	erasesprites();
+	clearspritelist();
+	gfxunlock();
+
+	myaction=getaction();
+	if(!network && myaction==ACT_QUIT) return CODE_QUIT;
+	i=networktraffic();
+	if(i<0)
+		gountil=mycount+1;
+	else
+		gountil=i;
+
+	while(mycount<gountil) {
+		++mycount;
+		if(network) {
+			i=gountil-mycount;
+			if(i>=ACTIONHIST) // too far behind
+				return CODE_QUIT;
+			memcpy(actions,actionblock+i*MAXNETNODES,MAXNETNODES);
+			if(actions[myslot]==ACT_QUIT) return CODE_QUIT;
+		}
+		processbombs();
+		dodetonations();
+		processdecays();
+		processflames();
+		processgenerics();
+		processquits();
+		processplayers();
+	}
+
+/*
+	if(!(rand()&127))
+	{
+		i=gtime();
+		while(gtime()-i<100);
+	}
+*/
+
+	drawbombs();
+	drawbonus();
+	drawgenerics();
+	drawdecays();
+	drawflames();
+	drawplayers();
+	plotsprites();
+	copyup();
+	if(!activegeneric.next) {
+		player *pl;
+		int deadplayers = 0;
+		pl=activeplayers.next;
+		i=0;
+		while(pl) {
+			if(!(pl->flags & FLG_DEAD))
+				++i;
+			else
+				deadplayers++;
+			pl=pl->next;
+		}
+		if (deadplayers > 0 && (!i || (network && i==1))) {
+			++deathcount;
+			if(deathcount==25)
+				return CODE_ALLDEAD;
+		} else
+			deathcount=0;
+	}
+	return CODE_CONT;
+}
+
+void set_game_options(unsigned char options[10]) {
+	memmove(gameoptions, options, sizeof(gameoptions));
+}

game.h

@@ -0,0 +1,23 @@
+#ifndef GAME_H
+#define GAME_H
+
+#define FRACTION 9
+#define SPEEDDELTA (1<<(FRACTION-1))
+#define SPEEDMAX (10<<FRACTION)
+#define SPEEDSTART (6<<FRACTION)
+#define SPEEDTURTLE (3<<FRACTION)
+#define SPEEDTURTLE_TIMEOUT 250
+
+#define TEMPNODES 2
+
+void run_single_player(void);
+void run_network_game(void);
+
+void set_game_options(unsigned char options[10]);
+
+extern char playername[16];
+extern int gamemode;
+
+extern solid background,backgroundoriginal;
+
+#endif

list.c

@@ -0,0 +1,62 @@
+
+#include "bomber.h"
+#include "list.h"
+#include "utils.h"
+
+static listitem *things=0, *free_things;
+
+void allocthings(void) {
+	int i;
+	const int num = MAXTHINGS;
+
+	if (!things) {
+		things = calloc(sizeof(listitem), num);
+	} else {
+		memset(things, 0, sizeof(listitem)*num);
+	}
+	if(!things) nomem("Trying to allocate thing memory");
+	for(i=0;i<num-1;++i) {
+		things[i].next = &things[i+1];
+	}
+	things[i].next = 0;
+	free_things = things;
+}
+
+void *allocentry(void) {
+	listitem *entry = free_things;
+
+	if (free_things) {
+		free_things = free_things->next;
+		memset(entry, 0, sizeof(*entry));
+	}
+	return entry;
+}
+
+void freeentry(void *_entry) {
+	listitem *entry = _entry;
+
+	entry->next = free_things;
+	free_things = entry;
+}
+
+void addtail(void *_header,void *_entry) {
+	listitem *header = _header, *entry = _entry;
+
+	while (header->next) header = header->next;
+	header->next = entry;
+	entry->next = 0;
+}
+
+void delink(void *_header,void *_entry) {
+	listitem *header = _header, *entry = _entry;
+
+	while (header->next != entry) header = header->next;
+	header->next = entry->next;
+	entry->next = 0;
+	freeentry(entry);
+}
+
+void initheader(void *p) {
+	memset(p,0,sizeof(list));
+}
+

list.h

@@ -0,0 +1,12 @@
+#ifndef LIST_H
+#define LIST_H
+
+void allocthings(void);
+void *allocentry(void);
+void freeentry(void *entry);
+void addtail(void *header,void *entry);
+void delink(void *header,void *entry);
+
+void initheader(void *p);
+
+#endif

menu.c

@@ -0,0 +1,360 @@
+
+#include "bomber.h"
+#include "menu.h"
+#include "draw.h"
+#include "gfx.h"
+#include "utils.h"
+#include "sound.h"
+#include "network.h"
+#include "announce.h"
+#include "game.h"
+
+unsigned char configopts[10]={2,1,0,2,0,0,0,0,0};
+
+/* Generic menu */
+
+int menuhistory[32]={0};
+char menustring[1024];
+char *menuput,*menuitems[40],*menutitle;
+int menunum;
+int menudelta;
+
+static void drawmenu(int selected) {
+	int i,j;
+	int tx,ty;
+
+	clear();
+	j=strlen(menutitle)*bigfontxsize;
+	drawbigstring((IXSIZE-j) >> 1,20,menutitle);
+	ty=((IYSIZE-(bigfontysize*menunum))>>1)-(IYSIZE>>3);
+	for(i=0;i<menunum;++i)
+	{
+		j=strlen(menuitems[i])*bigfontxsize;
+		tx=(IXSIZE-j) >> 1;
+		if(i==selected)
+		{
+			greyrect(0,ty-1,tx-5,bigfontysize);
+			greyrect(tx+j+3,ty-1,IXSIZE-(tx+j+3),bigfontysize);
+		}
+		drawbigstring(tx,ty,menuitems[i]);
+		ty+=bigfontyspace;
+	}
+}
+
+static int domenu(int whichmenu) {
+	char redraw;
+	int selected;
+	int mcount=0;
+
+	if(whichmenu>=0)
+		selected=menuhistory[whichmenu];
+	else
+		selected=0;
+
+	redraw=1;
+	clearspritelist();
+	while(!exitflag) {
+		if(redraw) {
+			drawmenu(selected);
+			redraw=0;
+		}
+		mypause();
+		scaninput();
+		++mcount;
+
+		clearsprites();
+		clearspritelist();
+		addsprite(IXSIZE/2-50-20,IYSIZE-80,walking[2]+(30+mcount%15));
+		addsprite(IXSIZE/2+50-20,IYSIZE-80,walking[3]+(30+(mcount+7)%15));
+		plotsprites();
+		copyup();
+
+		if(anydown()) playsound(3);
+		while(anydown())
+			switch(takedown()) {
+			case MYLEFT:
+				menudelta=-1;
+				return selected;
+			case MYRIGHT:
+			case ' ':
+			case 13:
+				menudelta=1;
+				return selected;
+			case 'k':
+			case MYUP:
+				if(selected) --selected;
+				else selected=menunum-1;
+				if(whichmenu>=0)
+					menuhistory[whichmenu]=selected;
+				redraw=1;
+				break;
+			case 'j':
+			case MYDOWN:
+				++selected;
+				if(selected==menunum) selected=0;
+				if(whichmenu>=0)
+					menuhistory[whichmenu]=selected;
+				redraw=1;
+				break;
+			case 0x1b:
+				if(!whichmenu && selected)
+				{
+					selected=0;
+					redraw=1;
+					break;
+				}
+				menudelta=1;
+				return 0;
+		}
+	}
+	return 0;
+}
+
+static void menustart() {
+	menunum=-1;
+	menuput=menustring;
+	*menuput=0;
+}
+
+static void additem(char *item,...) {
+	char output[256];
+	va_list ap;
+
+	va_start(ap, item);
+
+	vsprintf(output,item,ap);
+	if(menunum<0)
+		menutitle=menuput;
+	else
+		menuitems[menunum]=menuput;
+	++menunum;
+	strcpy(menuput,output);
+	menuput+=strlen(output)+1;
+}
+
+/* end generic menu */
+
+/* game menues */
+
+static void drawjoinscreen(void) {
+int i;
+char name[17];
+char temp[64];
+
+#define JX (IXSIZE/3)
+#define JY (IYSIZE/4)
+
+	clear();
+	centerbig(20,"JOIN NETWORK GAME");
+	drawbigstring(JX,JY,"SLOT    NAME");
+	for(i=0;i<MAXNETNODES;++i)
+	{
+		if(!netnodes[i].used) continue;
+		memmove(name,netnodes[i].name,16);
+		name[16]=0;
+		sprintf(temp,"  %d     %s",i+1,name);
+		drawbigstring(JX,JY+(i+1)*bigfontyspace,temp);
+	}
+}
+
+static int tryjoin(int which) {
+	int res;
+
+	if (0 == (res = send_join(&gamelistentries[which].netname, playername)))
+		return 0;
+
+	for ( ;; ) {
+		switch (res) {
+		case 1: return 0;
+		case 2:
+			drawjoinscreen();
+			copyup();
+			break;
+		case 3: return 1;
+		default: break;
+		}
+		scaninput();
+		while(anydown()) {
+			switch(takedown()) {
+			case 0x1b:
+				send_quit();
+				return 0;
+			}
+		}
+		res=scaninvite(200);
+	}
+	return 0;
+}
+
+static void main_menu(void) {
+	int sel;
+
+	while(!exitflag) {
+		menustart();
+		additem("BOMBER MAIN MENU");
+		additem("EXIT GAME");
+		additem("START SINGLE PLAYER GAME");
+		additem("OPTIONS");
+// 		additem("REMAP MOVEMENT KEYS");
+		additem("START NETWORK GAME");
+		additem("JOIN NETWORK GAME");
+		sel=domenu(0);
+		if(!sel) {exitflag=1;break;}
+		if(sel==1) {gamemode=1;break;}
+		if(sel==2) {gamemode=2;break;}
+		if(sel==3) {gamemode=3;break;}
+		if(sel==4) {gamemode=4;break;}
+	}
+}
+
+char *densities[]={"PACKED","HIGH","MEDIUM","LOW"};
+char *generosities[]={"LOW","MEDIUM","HIGH","RIDICULOUS"};
+
+static void config_menu(void) {
+	int sel;
+
+	for(;;) {
+		menustart();
+		additem("GAME OPTIONS");
+		additem("RETURN TO MAIN MENU");
+		additem("DENSITY: %s",densities[configopts[GO_DENSITY]]);
+		additem("GENEROSITY: %s",generosities[configopts[GO_GENEROSITY]]);
+		additem("INITIAL FLAME LENGTH: %d",configopts[GO_FLAMES]+1);
+		additem("INITIAL NUMBER OF BOMBS: %d",configopts[GO_BOMBS]+1);
+		sel=domenu(2);
+		if(!sel) {gamemode=0;break;}
+		if(sel==1) {
+			configopts[GO_DENSITY]+=menudelta;
+			configopts[GO_DENSITY]&=3;
+		}
+		if(sel==2) {
+			configopts[GO_GENEROSITY]+=menudelta;
+			configopts[GO_GENEROSITY]&=3;
+		}
+		if(sel==3) {
+			configopts[GO_FLAMES]+=menudelta;
+			configopts[GO_FLAMES]&=7;
+		}
+		if(sel==4) {
+			configopts[GO_BOMBS]+=menudelta;
+			configopts[GO_BOMBS]&=7;
+		}
+	}
+}
+
+static void failure(char *str,...) {
+	gamemode=0;
+}
+
+static void draw_host_game(void) {
+	int i;
+	char *name;
+	char temp[64];
+
+#define M3X (IXSIZE/3)
+#define M3Y (IYSIZE/4)
+
+	clear();
+	centerbig(20,"HOST NETWORK GAME");
+	drawbigstring(M3X,M3Y,"SLOT    NAME");
+	for(i=0;i<MAXNETNODES;++i) {
+		if(!netnodes[i].used) continue;
+		name=netnodes[i].name;
+		sprintf(temp,"  %d     %s",i+1,name);
+		drawbigstring(M3X,M3Y+(i+2)*bigfontyspace,temp);
+	}
+
+	copyup();
+}
+
+
+static void host_game(void) {
+	create_unique();
+	if (!start_network_game()) {
+		failure("COULD NOT REGISTER GAME");
+		return;
+	}
+
+	draw_host_game();
+	for(;;) {
+		scaninput();
+		while(anydown()) {
+			switch(takedown()) {
+			case 0x1b:
+				unregistergame();
+				cancel_network_game();
+				gamemode=0;
+				return;
+			case ' ':
+			case 13:
+				unregistergame();
+				if (begin_network_game()) {
+					gamemode=5;
+					return;
+				}
+				send_invites();
+				draw_host_game();
+			}
+		}
+
+		if (!handle_joins()) continue;
+
+		send_invites();
+		draw_host_game();
+	}
+
+	gamemode=0;
+}
+
+static void join_game(void) {
+	int i;
+	int sel;
+
+	if (!searchgames(gameversion)) {
+		gamemode = 0;
+		return;
+	}
+	if (gamelistsize == 0) {
+		menustart();
+		additem("NO GAMES AVAILABLE");
+		domenu(-1);
+		gamemode=0;
+		return;
+	}
+
+	menustart();
+	additem("JOIN NETWORK GAME");
+	additem("EXIT");
+
+	for (i = 0; i < gamelistsize; i++) {
+		additem(gamelistentries[i].name);
+	}
+
+	sel=domenu(-1);
+	if(!sel) {
+		gamemode=0;
+		return;
+	}
+	if(!tryjoin(sel-1)) {
+		gamemode=0;
+		return;
+	}
+	network = NETWORK_SLAVE;
+	gamemode=5;
+}
+
+void (*modefunctions[])()= {
+	main_menu,
+	run_single_player,
+	config_menu,
+	host_game,
+	join_game,
+	run_network_game,
+};
+
+
+void mainloop(void) {
+	exitflag=0;
+	while(!exitflag)
+		modefunctions[gamemode]();
+}

menu.h

@@ -0,0 +1,10 @@
+#ifndef MENU_H
+#define MENU_H
+
+void mainloop(void);
+
+int iterate(void); /* bomber.c */
+
+extern unsigned char configopts[10];
+
+#endif

network.c

@@ -0,0 +1,550 @@
+
+#include "bomber.h"
+#include "announce.h"
+#include "game.h"
+#include "menu.h"
+#include "network.h"
+#include "utils.h"
+
+#define MAXMSG 4096
+
+int udpsocket;
+const unsigned char gameversion[4]={0xda,0x01,0x00,0x04};
+
+struct netnode netnodes[64];
+
+static int informsize;
+static unsigned char regpacket[64];
+
+static struct sockaddr_in myname={0},mastername={0};
+static socklen_t senderlength;
+static struct sockaddr_in sender={0};
+
+static unsigned char mesg[MAXMSG]="";
+uchar needwhole=0;
+int mydatacount;
+int myslot;
+network_type network = NETWORK_NONE;
+
+static unsigned char hist[ACTIONHIST][MAXNETNODES];
+int actionput,actioncount;
+unsigned char actionblock[ACTIONHIST*MAXNETNODES];
+
+int myaction;
+unsigned char actions[MAXNETNODES];
+
+unsigned char latestactions[MAXNETNODES];
+long latestcounts[MAXNETNODES];
+
+
+
+/* Network I/O, building/checking packets */
+
+#if defined (TEST_LATENCY)
+#define NUMQ 512
+struct message {
+	int time;
+	struct sockaddr_in *to;
+	int tosize;
+	unsigned char msg[512];
+	int len;
+} message[NUMQ]={0};
+
+
+outmsgs() {
+	int i;
+
+	for(i=0;i<NUMQ;++i) {
+		if(message[i].time) {
+			--message[i].time;
+			if(message[i].time) continue;
+			sendto(udpsocket,message[i].msg,message[i].len,0,
+				message[i].to,sizeof(struct sockaddr_in));
+		}
+	}
+}
+#endif
+
+static int putmsg(struct sockaddr_in *toname,unsigned char *msg,int len) {
+	int status;
+
+#if defined (TEST_LATENCY)
+	int i;
+
+	for(i=0;i<NUMQ;++i) {
+		if(!message[i].time) {
+			message[i].time=10;
+			message[i].to=toname;
+			memcpy(message[i].msg,msg,len);
+			message[i].len=len;
+			break;
+		}
+	}
+	return 0;
+#else
+	status=sendto(udpsocket,msg,len,0,
+		(struct sockaddr *)toname,sizeof(struct sockaddr_in));
+	return status;
+#endif
+
+}
+
+static int getmsg(int msec) {
+	int size;
+
+	memset(&sender,0,sizeof(sender));
+	senderlength=sizeof(sender);
+	if(msec) {
+		struct timeval timeout;
+		fd_set readfds;
+		int res;
+
+		memset(&timeout,0,sizeof(timeout));
+		timeout.tv_sec=msec/1000;
+		timeout.tv_usec=(msec%1000)*1000;
+		FD_ZERO(&readfds);
+		FD_SET(udpsocket,&readfds);
+		res=select(udpsocket+1,&readfds,0,0,&timeout);
+		if(res<=0) return -1;
+	}
+	size=recvfrom(udpsocket,mesg,MAXMSG,0,
+		(struct sockaddr *)&sender,&senderlength);
+	return size;
+}
+
+static int isvalidunique(unsigned char *p) {
+	return 0 == memcmp(p, &network_unique, 4);
+}
+
+static int isvalidversion(unsigned char *p) {
+	return 0 == memcmp(p, gameversion, 4);
+}
+
+static unsigned char* writeuint32(unsigned char *p, Uint32 i) {
+	p[0]=i>>24L;
+	p[1]=i>>16L;
+	p[2]=i>>8L;
+	p[3]=i;
+	return p+4;
+}
+
+static Uint32 readuint32(unsigned char *p) {
+	return (p[0]<<24L) | (p[1]<<16L) | (p[2]<<8) | p[3];
+}
+
+static unsigned char* writeunique(unsigned char *p) {
+	memcpy(p, &network_unique, 4);
+	return p + 4;
+}
+
+static unsigned char* writeversion(unsigned char *p) {
+	memcpy(p, &gameversion, 4);
+	return p + 4;
+}
+
+static int isvalidmsg() {
+	int i;
+	void *host;
+	void *port;
+
+	if (!isvalidunique(mesg+1)) return -1;
+	host=&sender.sin_addr.s_addr;
+	port=&sender.sin_port;
+	for(i=1;i<MAXNETNODES;++i)
+		if(netnodes[i].used &&
+				!memcmp(&netnodes[i].netname.sin_addr.s_addr,host,4) &&
+				!memcmp(&netnodes[i].netname.sin_port,port,2))
+			return i;
+	return -1;
+}
+
+/* Handling game actions */
+
+static void addactions(void) {
+	memmove(hist[actionput],actions,MAXNETNODES);
+	++actionput;
+	if(actionput==ACTIONHIST)
+		actionput=0;
+	++actioncount;
+}
+
+static void buildactions(void) {
+	unsigned char *p;
+	int i,j;
+	p=actionblock;
+	i=0;
+	while(i<20) {
+		if(actioncount-i>0) {
+			j=actionput-i-1;
+			if(j<0) j+=ACTIONHIST;
+			memmove(p,hist[j],MAXNETNODES);
+		} else {
+			memset(p,0,MAXNETNODES);
+		}
+		p+=MAXNETNODES;
+		++i;
+	}
+}
+
+static void sendactions(int which) {
+	unsigned char msg[512];
+
+	msg[0] = PKT_STEP;
+	writeunique(msg+1);
+	writeuint32(msg+5, actioncount);
+	memcpy(msg+9,actionblock,MAXNETNODES*ACTIONHIST);
+	putmsg(&netnodes[which].netname,msg,MAXNETNODES*ACTIONHIST+9);
+}
+
+static void sendmine(int frame) {
+	unsigned char msg[64];
+
+	msg[0] = PKT_MYDATA;
+	writeunique(msg+1);
+	writeuint32(msg+5, frame);
+	msg[9]=myaction;
+	putmsg(&mastername,msg,10);
+}
+
+int networktraffic(void) {
+	int i;
+	int length;
+	int whosent;
+	unsigned char newactions[MAXNETNODES];
+	long now;
+	long count;
+
+	switch (network) {
+	case NETWORK_NONE:
+		return -1;
+	case NETWORK_MASTER:
+		memcpy(newactions,latestactions,MAXNETNODES);
+		newactions[0]=myaction;
+		now=gtime();
+		for(;;) {
+			if(gtime()-now>15) break;
+			length=getmsg(5);
+			if(length>0 && *mesg!=PKT_MYDATA) fprintf(stderr, "Strange packet %d\n", (int) *mesg);
+// check for unexpected old packets...
+// for example JOIN on frame 0, respond with BEGIN if player already in game
+// respond with uninvite INVITE on JOIN from others
+			if(length<10) continue;
+			whosent=isvalidmsg();
+			if(whosent<=0) continue;
+			count=readuint32(mesg+5);
+			if(count>latestcounts[whosent]) {
+				latestcounts[whosent]=count;
+				newactions[whosent]=mesg[9];
+			}
+		}
+		if(myaction==ACT_QUIT) {
+			for(i=1;i<MAXNETNODES;++i)
+				if(netnodes[i].used)
+					newactions[i]=ACT_QUIT;
+		}
+
+		memmove(actions,newactions,sizeof(actions));
+		addactions();
+		buildactions();
+		for(i=1;i<MAXNETNODES;++i)
+			if(netnodes[i].used)
+				sendactions(i);
+		for(i=1;i<MAXNETNODES;++i)
+			if(netnodes[i].used && actions[i]==ACT_QUIT)
+				netnodes[i].used=0;
+		return actioncount;
+	case NETWORK_SLAVE:
+		{
+			long latest=-1;
+			long lastsent;
+
+			lastsent=now=gtime();
+			++mydatacount;
+			sendmine(mydatacount);
+			for(;;) {
+	/*
+				if(gtime()-lastsent>=1)
+				{
+					lastsent=gtime();
+					sendmine(mydatacount);
+				}
+	*/
+				if(latest>=0 && gtime()-now>3) break;
+				length=getmsg(3);
+				if(length==MAXNETNODES*ACTIONHIST+9 &&
+						sender.sin_addr.s_addr==mastername.sin_addr.s_addr &&
+						sender.sin_port==mastername.sin_port) {
+					i=readuint32(mesg+5);
+					if(i<latest) continue;
+					latest=i;
+					memmove(actionblock,mesg+9,MAXNETNODES*ACTIONHIST);
+				}
+			}
+			return latest;
+		}
+	}
+	return -1;
+}
+
+/* Handling socket init */
+
+int winsock=0;
+
+void getsocket(void) {
+	int status;
+	socklen_t slen = sizeof(myname);
+#if defined(__WIN32__) || defined(WIN32)
+char dummydata[128];
+
+	if(WSAStartup(0x0101,(void *)dummydata)) {
+		printf("Windows dumped\n");
+		exit(1);
+	}
+	winsock=1;
+#endif
+
+	udpsocket=socket(PF_INET,SOCK_DGRAM,IPPROTO_UDP);
+	if(udpsocket==-1) {
+		perror("socket()");
+		exit(1);
+	}
+	memset(&myname,0,sizeof(myname));
+	myname.sin_family=AF_INET;
+	myname.sin_addr.s_addr=htonl(INADDR_ANY);
+	myname.sin_port=htons(0);
+	status=bind(udpsocket,(struct sockaddr *) &myname,sizeof(myname));
+	if(-1 == status) {
+		perror("bind()");
+		exit(1);
+	}
+	status = getsockname(udpsocket, (struct sockaddr *) &myname, &slen);
+	if(-1 == status) {
+		perror("getsockname()");
+		exit(1);
+	}
+}
+
+void freesocket(void) {
+#if defined(__WIN32__) || defined(WIN32)
+	if(!winsock) return;
+	WSACleanup();
+#endif
+}
+
+/* Join / Host Games */
+
+static void buildinform(unsigned char type) {
+	unsigned char *put;
+	int i;
+
+	put=mesg;
+	*put++=type;
+	put = writeunique(put);
+	++put; // slot specific for each slave
+	for (i = 0; i < MAXNETNODES; ++i) {
+		if(!netnodes[i].used) continue;
+		*put++=i;
+		memmove(put,netnodes[i].name,16);
+		put+=16;
+	}
+	*put++=0xff;
+	memcpy(put, configopts, sizeof(configopts));
+	put += sizeof(configopts);
+	informsize=put-mesg;
+}
+
+static void inform1(int which) {
+	mesg[5]=which;
+	putmsg(&netnodes[which].netname,mesg,informsize);
+}
+
+static void inform(unsigned char type) {
+	int i;
+	buildinform(type);
+	for(i=1;i<MAXNETNODES;++i)
+		if(netnodes[i].used)
+			inform1(i);
+}
+
+//returns 0=ignore packet,1=we're rejected,2=INVITE,3=BEGIN
+int scaninvite(int msec) {
+	int i, size;
+	unsigned char *take;
+	Uint32 unique = 0;
+
+	size = getmsg(msec);
+
+	if (size < 6) return 0;
+	if (*mesg!=PKT_INVITE && *mesg!=PKT_BEGIN) return 0;
+	if (sender.sin_family != mastername.sin_family
+	 || sender.sin_addr.s_addr != mastername.sin_addr.s_addr
+	 || sender.sin_port != mastername.sin_port) return 0;
+
+	myslot=mesg[5];
+	if (6 == size || 0xff == mesg[5] || 0xff == mesg[6]) return 1;
+
+	/* update unique */
+	memcpy(&unique, mesg+1, 4);
+	if (unique != network_unique)
+		set_unique(ntohl(unique));
+
+	memset(netnodes,0,sizeof(netnodes));
+	size-=6;
+	take=mesg+6;
+	while(*take!=0xff && size>=17) {
+		if((i=*take)<MAXNETNODES) {
+			netnodes[i].used=1;
+			memmove(netnodes[i].name,take+1,16);
+		}
+		take+=17;
+		size-=17;
+	}
+	take++; size--; /* read 0xff */
+
+	if(*mesg==PKT_INVITE) {
+		return 2;
+	} else { /* BEGIN */
+		if (size != sizeof(configopts)) {
+			fprintf(stderr, "PKT_BEGIN has wrong size: %i != %i\n", size, (int) sizeof(configopts));
+			return 1; /* broken packet */
+		}
+		set_game_options(take);
+		return 3;
+	}
+}
+
+int send_join(struct sockaddr_in *netname, char playername[16]) {
+	int res = 0;
+	long now;
+
+	set_unique(-1); /* reset unique and random */
+
+	mastername = *netname;
+	*regpacket=PKT_JOIN;
+	writeversion(regpacket + 1);
+	memmove(regpacket+5, playername, 16);
+	now=longtime();
+	while(longtime()-now<10) {
+		putmsg(&mastername,regpacket,1+4+16);
+		if (0 == (res=scaninvite(1000))) continue;
+		return res;
+	}
+	return 0;
+}
+
+void send_quit() {
+	long now;
+	int size;
+
+	*regpacket = PKT_QUIT;
+	writeunique(regpacket+1);
+	now=longtime();
+	while(longtime()-now<10) {
+		putmsg(&mastername,regpacket,5);
+		size=getmsg(1000);
+		if(size<6) continue;
+		if(mesg[0] != PKT_ACK || mesg[1] != PKT_QUIT) continue;
+		if (isvalidunique(mesg+2))
+			break;
+	}
+}
+
+int start_network_game() {
+	if(!registergame(playername, myname.sin_port, gameversion)) return 0;
+	memset(netnodes,0,sizeof(netnodes));
+	netnodes[0].used=1;
+	memmove(netnodes[0].name,playername,16);
+	myslot=0;
+	return 1;
+}
+
+int begin_network_game() {
+	inform(PKT_BEGIN);
+	network = NETWORK_MASTER;
+	/* TODO: wait for ack */
+	return 1;
+}
+
+void send_invites() {
+	inform(PKT_INVITE);
+}
+
+void cancel_network_game() {
+	int i;
+
+	mesg[0] = PKT_INVITE;
+	writeunique(mesg+1);
+	mesg[5] = 0xff;
+
+	for(i=1;i<MAXNETNODES;++i) {
+		if(netnodes[i].used) {
+			putmsg(&netnodes[i].netname,mesg,6);
+		}
+	}
+}
+
+int handle_joins() {
+	int size;
+	int i, j;
+	unsigned char temp[64];
+
+	size=getmsg(40);
+	switch (*mesg) {
+	case PKT_JOIN:
+		if (size < 21 || !isvalidversion(mesg+1)) return 0;
+		break;
+	case PKT_QUIT:
+		if (size < 5 || !isvalidunique(mesg+1)) return 0;
+		break;
+	default:
+		return 0;
+	}
+
+	/* Find host in list:
+	 *   i == MAXETNODES: host not found, otherwise the found host
+	 * only if host not found:
+	 *   j == -1: no free slot, otherwise first free slot
+	 */
+	j = -1;
+	for (i = 1; i < MAXNETNODES; ++i) {
+		if (!netnodes[i].used) {
+			if (-1 == j) j = i;
+			continue; /* don't compare with unused host */
+		}
+		if(memcmp(&netnodes[i].netname.sin_addr.s_addr,
+			&sender.sin_addr.s_addr,4)) continue;
+		if(memcmp(&netnodes[i].netname.sin_port,
+			&sender.sin_port,2)) continue;
+		/* found host */
+		break;
+	}
+
+	if(*mesg==PKT_QUIT) {
+		if(i < MAXNETNODES) /* if host found, reset entry */
+			memset(netnodes+i,0,sizeof(struct netnode));
+		/* send always ACK for QUITs */
+		*temp=PKT_ACK;
+		memmove(temp+1,mesg,5);
+		putmsg(&sender,temp,6);
+	} else {
+		if (i==MAXNETNODES && j==-1) { /* reject */
+			*mesg=PKT_INVITE;
+			writeunique(mesg+1);
+			mesg[5]=0xff;
+			putmsg(&sender,mesg,6);
+			return 0;
+		}
+
+		/* no explicit ack, send invites to all later */
+		if(i==MAXNETNODES) i=j;
+		memmove(&netnodes[i].netname.sin_addr.s_addr,
+			&sender.sin_addr.s_addr,4);
+		memmove(&netnodes[i].netname.sin_port,
+			&sender.sin_port,2);
+		netnodes[i].netname.sin_family=AF_INET;
+		netnodes[i].used=1;
+		memmove(netnodes[i].name,mesg+5,16);
+		netnodes[i].name[15] = '\0';
+	}
+	return 1;
+}

network.h

@@ -0,0 +1,58 @@
+#ifndef NETWORK_H
+#define NETWORK_H
+
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+
+struct netnode {
+	struct sockaddr_in netname;
+	char name[16];
+	char used;
+};
+
+extern struct netnode netnodes[64];
+
+void getsocket(void);
+void freesocket(void);
+
+int send_join(struct sockaddr_in *netname, char playername[16]);
+void send_quit();
+int scaninvite(int msec);
+
+int start_network_game();
+int handle_joins();
+// void inform(unsigned char type);
+int begin_network_game();
+void send_invites();
+void cancel_network_game();
+
+#define MAXNETNODES 10
+
+extern struct netnode netnodes[64];
+
+extern int udpsocket;
+extern const unsigned char gameversion[4];
+
+typedef enum { NETWORK_NONE = 0, NETWORK_MASTER, NETWORK_SLAVE } network_type;
+extern network_type network;
+
+/* actions */
+int networktraffic(void);
+
+#define ACTIONHIST 20
+
+extern int mydatacount;
+extern int myslot;
+extern int actionput,actioncount;
+extern unsigned char actionblock[ACTIONHIST*MAXNETNODES];
+
+extern int myaction;
+extern unsigned char actions[MAXNETNODES];
+
+extern unsigned char latestactions[MAXNETNODES];
+extern long latestcounts[MAXNETNODES];
+
+// extern int netframe;
+
+#endif

sound.c

@@ -7,6 +7,10 @@
 
 #include "sound.h"
 
+#ifndef DATADIR
+#define DATADIR "data"
+#endif
+
 static char dirlist[]=DATADIR;
 
 static int readsound(int num);

sound.h

@@ -1,10 +1,6 @@
 #ifndef SOUND_H
 #define SOUND_H
 
-#ifndef DATADIR
-#define DATADIR "data"
-#endif
-
 int soundopen(void);
 void soundclose(void);
 void playsound(int n);

utils.c

@@ -0,0 +1,127 @@
+
+#include "bomber.h"
+#include "utils.h"
+#include "gfx.h"
+
+#include <arpa/inet.h>
+
+int volatile hc=0;
+char volatile interrupted=0;
+static Uint32 cur_unique;
+Uint32 network_unique;
+
+Uint32 gtime(void) {
+	return SDL_GetTicks();
+}
+
+Uint32 longtime(void) {
+	return gtime()/1000;
+}
+
+/* random generator */
+
+#define TAP1 250
+#define TAP2 103
+/*
+#define TAP1 55
+#define TAP2 31
+*/
+
+static unsigned char myrandblock[TAP1];
+static int myrandtake;
+
+static int myrand1(void) {
+	int i;
+	int val;
+
+	i=myrandtake-TAP2;
+	if(i<0) i+=TAP1;
+	val=myrandblock[myrandtake++]^=myrandblock[i];
+	if(myrandtake==TAP1) myrandtake=0;
+	return val;
+}
+
+int myrand(void) {
+	int v;
+	v=myrand1();
+	return (v<<8) | myrand1();
+}
+
+static void initmyrand(Uint32 unique) {
+	int i,j;
+	unsigned char *p;
+	int msb,msk;
+
+	myrandtake=0;
+	p=myrandblock;
+	j=12345 ^ unique;
+	i=TAP1;
+	while(i--) {
+		j=(j*1277)&0xffff;
+		*p++=j>>8;
+	}
+	p=myrandblock+14;
+	msk=0xff;
+	msb=0x80;
+	do {
+		*p&=msk;
+		*p|=msb;
+		p+=11;
+		msk>>=1;
+		msb>>=1;
+	} while(msk);
+	i=500;
+	while(i--) myrand();
+}
+
+void create_unique(void) {
+	set_unique(gtime());
+}
+
+void set_unique(Uint32 unique) {
+	cur_unique = unique;
+	network_unique = htonl(cur_unique);
+	initmyrand(cur_unique);
+}
+
+Uint32 get_unique(void) {
+	return cur_unique;
+}
+
+void nomem(char *str) {
+	printf("No memory!!![%s]\n",str);
+	exit(1);
+}
+
+void mypause(void) {
+	while(!interrupted) {
+		pollinput();
+		SDL_Delay(1);
+	}
+	interrupted=0;
+}
+
+static Uint32 sdlhandler(Uint32 time) {
+#if defined (SDL_LATENCY)
+	outmsgs();
+#endif
+	interrupted=1;
+	hc++;
+	return time;
+}
+
+void pulseon(void) {
+	SDL_SetTimer(40,sdlhandler);
+}
+
+void hexdump(unsigned char *p, int len) {
+	int i;
+	for (i = 0; i < len; i++) {
+		if (15 == len % 16)
+			fprintf(stderr, "0x%X\n", p[i]);
+		else
+			fprintf(stderr, "0x%X ", p[i]);
+	}
+	if (i % 16)
+		fprintf(stderr, "\n");
+}

utils.h

@@ -0,0 +1,26 @@
+#ifndef UTILS_H
+#define UTILS_H
+
+Uint32 gtime(void);
+Uint32 longtime(void);
+
+void create_unique(void);
+void set_unique(Uint32 unique);
+Uint32 get_unique(void);
+
+extern Uint32 network_unique;
+
+int myrand(void);
+
+void nomem(char *str);
+
+void mypause(void);
+void pulseon(void);
+
+void hexdump(unsigned char *p, int len);
+
+extern volatile int hc;
+extern volatile char interrupted;
+
+
+#endif