shithub: dmap

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spawn dbsp from dmap, move common code

--- a/bsp.c

+++ b/bsp.c

@@ -40,14 +40,6 @@

 static float bbox[4];

-void *

-erealloc(void *p, ulong n)

-{

-	if((p = realloc(p, n)) == nil)

-		sysfatal("realloc: %r");

-	return p;

-}

-

 int

 subsect(Seg *s)

 {

@@ -71,30 +63,6 @@

 	return 0;

 }

-static int

-fsign(float f)

-{

-	return f < 0. ? -1 : f > 0.;

-}

-

-static float

-fround(float x)

-{

-	if(x > 0.){

-		if(x - (int)x < 0.1)

-			return (int)x;

-		else if(x - (int)x > 0.9)

-			return (int)x + 1;

-		else

-			return x;

-	}

-	if((int)x - x < 0.1)

-		return (int)x;

-	else if((int)x - x > 0.9)

-		return (int)x - 1;

-	return x;

-}

-

 static void

 divline(Divline *d, Seg *s)

 {

@@ -220,8 +188,8 @@

 addnode(Seg **ss, int *n, Seg *s, Seg *p)

 {

 	if(s - *ss >= *n){

+		*ss = erealloc(*ss, (*n+64) * sizeof **ss, *n * sizeof **ss);

 		*n += 64;

-		*ss = erealloc(*ss, *n * sizeof **ss);

 	}

 	*s = *p;

 }

--- /dev/null

+++ b/dbsp.c

@@ -1,0 +1,30 @@

+#include <u.h>

+#include <libc.h>

+#include <thread.h>

+#include <draw.h>

+#include "dat.h"

+#include "fns.h"

+

+static void

+usage(void)

+{

+	fprint(2, "%s [mapdir]\n", argv0);

+	threadexitsall("usage");

+}

+

+void

+threadmain(int argc, char *argv[])

+{

+	Mouse m;

+	Point mo;

+	double f, vx, vy;

+	Rune r;

+

+	ARGBEGIN{

+	default:

+		usage();

+	}ARGEND

+	load(*argv);

+	buildnodes();

+	threadexitsall(nil);

+}

--- a/dmap.c

+++ b/dmap.c

@@ -32,17 +32,6 @@

 static Keyboardctl *kc;

 static Mousectl *mc;

-void *

-emalloc(ulong n)

-{

-	void *p;

-

-	if((p = mallocz(n, 1)) == nil)

-		sysfatal("mallocz: %r");

-	setmalloctag(p, getcallerpc(&n));

-	return p;

-}

-

 Image *

 eallocimage(Rectangle r, ulong chan, int repl, ulong c)

 {

--- a/fns.h

+++ b/fns.h

@@ -1,3 +1,7 @@

 void	buildnodes(void);

 void	load(char*);

+int	fsign(float);

+float	fround(float);

 void*	emalloc(ulong);

+void*	erealloc(void*, ulong, ulong);

+vlong	filelen(int);

--- a/fs.c

+++ b/fs.c

@@ -26,20 +26,6 @@

 #define	PBIT32(p,v)	(p)[0]=(v);(p)[1]=(v)>>8;(p)[2]=(v)>>16;(p)[3]=(v)>>24

-static vlong

-filelen(int fd)

-{

-	vlong l;

-	Dir *d;

-

-	d = dirfstat(fd);

-	if(d == nil)

-		sysfatal("filelen: %r");

-	l = d->length;

-	free(d);

-	return l;

-}

-

 static void

 loadthings(char *f)

 {

--- a/mkfile

+++ b/mkfile

@@ -1,12 +1,16 @@

 </$objtype/mkfile

-BIN=$home/bin/$objtype

-TARG=dmap

-OFILES=\

-	bsp.$O\

-	dmap.$O\

-	fs.$O\

+BIN=/$objtype/bin/games

+TARG=\

+	dbsp\

+	dmap\

 HFILES=dat.h fns.h

-</sys/src/cmd/mkone

+</sys/src/cmd/mkmany

+

+$O.dbsp: dbsp.$O bsp.$O fs.$O util.$O

+	$LD -o $target $prereq

+

+$O.dmap: dmap.$O fs.$O util.$O

+	$LD -o $target $prereq

--- /dev/null

+++ b/util.c

@@ -1,0 +1,65 @@

+#include <u.h>

+#include <libc.h>

+#include <draw.h>

+#include "dat.h"

+#include "fns.h"

+

+int

+fsign(float f)

+{

+	return f < 0. ? -1 : f > 0.;

+}

+

+float

+fround(float x)

+{

+	if(x > 0.){

+		if(x - (int)x < 0.1)

+			return (int)x;

+		else if(x - (int)x > 0.9)

+			return (int)x + 1;

+		else

+			return x;

+	}

+	if((int)x - x < 0.1)

+		return (int)x;

+	else if((int)x - x > 0.9)

+		return (int)x - 1;

+	return x;

+}

+

+vlong

+filelen(int fd)

+{

+	vlong l;

+	Dir *d;

+

+	d = dirfstat(fd);

+	if(d == nil)

+		sysfatal("filelen: %r");

+	l = d->length;

+	free(d);

+	return l;

+}

+

+void *

+erealloc(void *p, ulong n, ulong oldn)

+{

+	if((p = realloc(p, n)) == nil)

+		sysfatal("realloc: %r");

+	setrealloctag(p, getcallerpc(&p));

+	if(n > oldn)

+		memset((uchar *)p + oldn, 0, n - oldn);

+	return p;

+}

+

+void *

+emalloc(ulong n)

+{

+	void *p;

+

+	if((p = mallocz(n, 1)) == nil)

+		sysfatal("emalloc: %r");

+	setmalloctag(p, getcallerpc(&n));

+	return p;

+}