--- a/bomber.c	2016-07-13 16:35:34.596802964 -0500
+++ b/bomber.c	2016-07-13 16:40:43.110797439 -0500
@@ -350,7 +350,7 @@
 			inform1(i);
 }
 
-networktraffic()
+void networktraffic()
 {
 int i,j,k;
 int length;
@@ -1252,7 +1252,7 @@
 	}
 }
 
-addsprite(int x,int y,figure *fig)
+void addsprite(int x,int y,figure *fig)
 {
 sprite *sp;
 	if(spritesused==MAXSPRITES) return;
@@ -1262,7 +1262,7 @@
 	sp->ypos=y;
 	sp->fig=fig;
 }
-adddamage(int xpos,int ypos,int xsize,int ysize)
+void adddamage(int xpos,int ypos,int xsize,int ysize)
 {
 damage *dm;
 	if(damageused==MAXDAMAGES) return;
@@ -1375,7 +1375,7 @@
 	return (y>>FRACTION)+arraystarty;
 }
 
-int trymove(player *pl,int dx,int dy)
+void trymove(player *pl,int dx,int dy)
 {
 int wx,wy;
 int sx,sy;
@@ -1520,7 +1520,7 @@
 	}
 }
 
-doplayer(player *pl)
+void doplayer(player *pl)
 {
 int last;
 int color;
@@ -1640,7 +1640,7 @@
 8,14,4,
 };
 
-initplayers()
+void initplayers()
 {
 int i;
 unsigned char *p;
@@ -1794,7 +1794,7 @@
 	copyup();
 }
 
-pulseon()
+void pulseon()
 {
 	if(havepulse) return;
 	havepulse=1;
@@ -1803,7 +1803,7 @@
 	thandler(0);
 	setitimer(ITIMER_REAL,&itval,NULL);
 }
-pulseoff()
+void pulseoff()
 {
 	if(!havepulse) return;
 	havepulse=0;
@@ -2235,7 +2235,7 @@
 failure(char *str,...)
 {
 	gamemode=0;
-	return;
+	return 1;
 }
 drawmode3()
 {
@@ -2261,7 +2261,7 @@
 }
 
 
-domode3()
+void domode3()
 {
 int size;
 int i,j;
@@ -2351,7 +2351,7 @@
 
 	gamemode=0;
 }
-domode4()
+void domode4()
 {
 unsigned char querystr[16];
 long now;
--- a/bomber.h	2016-07-13 16:35:34.596802964 -0500
+++ b/bomber.h	2016-07-13 16:40:26.797797731 -0500
@@ -210,6 +210,8 @@
 extern void scrprintf(char *str, ...);
 extern int textx,texty,fontxsize,fontysize;
 extern void texthome(void);
+extern void adddamage(int xpos,int ypos,int xsize,int ysize);
+extern void addsprite(int x,int y,figure *fig);
 
 extern unsigned char field[32][32];
 extern void *info[32][32];
--- a/sound.c	2016-07-13 16:35:34.596802964 -0500
+++ b/sound.c	2016-07-13 16:40:57.702797177 -0500
@@ -44,7 +44,7 @@
 
 
 
-soundinit(char *name)
+void soundinit(char *name)
 {
 int fd[2];
 char devname[256];