From a63d34a43ae15cc5e579dfafd6c64a1fe4880f80 Mon Sep 17 00:00:00 2001
From: Ian C <ianc@noddybox.co.uk>
Date: Mon, 6 Jun 2011 07:59:19 +0000
Subject: Readability reformatting.

---
 xd.c | 1252 ++++++++++++++++++++++++++++++++++++++----------------------------
 1 file changed, 721 insertions(+), 531 deletions(-)

diff --git a/xd.c b/xd.c
index cc2502f..52a694a 100644
--- a/xd.c
+++ b/xd.c
@@ -29,6 +29,7 @@ static const char id[]="$Id$";
 #include <string.h>
 #include <ctype.h>
 #include <math.h>
+#include <errno.h>
 
 #include <X11/X.h>
 #include <X11/Xlib.h>
@@ -66,83 +67,84 @@ typedef enum {UsesImage, UsesPixmap} DType;
 typedef enum {MousePress, MouseRelease, MouseMove} Mouse;
 
 typedef struct
-	{
-	const char	*name;
-	void		(*draw)(void);
-	DType		type;
-	} DemoInfo;
+{
+    const char	*name;
+    void	(*draw)(void);
+    DType	type;
+} DemoInfo;
 
 typedef struct
-	{
-	double	x,y,z;
-	} Point3D;
+{
+    double	x,y,z;
+} Point3D;
 
 #define MAX_POLY_POINTS	32
 
 typedef struct
-	{
-	int	p[MAX_POLY_POINTS];
-	int	no;
-	int	col;
-	} Poly3D;
+{
+    int		p[MAX_POLY_POINTS];
+    int		no;
+    int		col;
+} Poly3D;
 
 typedef struct
-	{
-	int		no_points;
-	int		no_poly;
+{
+    int		no_points;
+    int		no_poly;
 
-	Point3D		origin;
+    Point3D	origin;
 
-	Point3D		*ps;
-	Poly3D		*poly;
+    Point3D	*ps;
+    Poly3D	*poly;
 
-	Point3D		*workp3;
-	XPoint		*workxp;
+    Point3D	*workp3;
+    XPoint	*workxp;
 
-	int		x_rot;
-	int		y_rot;
-	int		z_rot;
+    int		x_rot;
+    int		y_rot;
+    int		z_rot;
 
-	int		mode;
+    int		mode;
 
-	int		col;
+    int		col;
 
-	int		cull;
-	} Obj3D;
+    int		cull;
+} Obj3D;
 
 #define MODE_SOLID	0
 #define MODE_WIRE	1
 #define MODE_EDGE	2
 
 typedef struct
-	{
-	Point3D		origin;
-	int		radius;
-	int		mode;
-	unsigned long	col;
-	} Sphere3D;
+{
+    Point3D		origin;
+    int			radius;
+    int			mode;
+    unsigned long	col;
+} Sphere3D;
 
 typedef struct
-	{
-	Point3D		origin;
-	int		w,h;
-	int		mode;
-	unsigned long	col;
-	} Rect3D;
+{
+    Point3D		origin;
+    int			w;
+    int			h;
+    int			mode;
+    unsigned long	col;
+} Rect3D;
 
 typedef struct
-	{
-	Point3D		origin;
-	unsigned long	col;
-	} Particle3D;
+{
+    Point3D		origin;
+    unsigned long	col;
+} Particle3D;
 
 typedef enum {eObj, eSphere, eRect, eParticle} ObjType;
 
 typedef struct
-	{
-	ObjType		type;
-	void		*p;
-	} WorldObj;
+{
+    ObjType		type;
+    void		*p;
+} WorldObj;
 
 /* ---------------------------------------- DEMO PROTOS
 */
@@ -346,17 +348,21 @@ int main(int argc, char *argv[])
     int f;
 
     for(f=1;f<argc;f++)
-    	{
+    {
 	if (!strcmp(argv[f],"-r"))
+	{
 	    use_root=TRUE;
+	}
 	else if (!strcmp(argv[f],"-c"))
+	{
 	    cycle=TRUE;
+	}
 	else
-	    {
+	{
 	    demo=atoi(argv[f]);
 	    demo=MAX(0,MIN(demo,NO_DEMOS-1));
-	    }
 	}
+    }
 
     OpenX();
     XMapWindow(disp,win);
@@ -368,23 +374,25 @@ int main(int argc, char *argv[])
     blue=GetCol(0,0,255);
 
     for(f=0;f<3600;f++)
-    	{
+    {
 	sintab[f]=sin(RAD(f*0.10));
 	costab[f]=cos(RAD(f*0.10));
-	}
+    }
 
     srand(getpid());
 
     while(TRUE)
-    	{
+    {
 	int update;
+	Window w1,w2;
+	int i1,i2;
 
 	if (XPending(disp))
-	    {
+	{
 	    XNextEvent(disp,&ev);
 
 	    switch(ev.type)
-		{
+	    {
 		case KeyPress:
 		    HandleKey(&ev.xkey);
 		    break;
@@ -414,19 +422,14 @@ int main(int argc, char *argv[])
 
 		default:
 		    break;
-		}
 	    }
-
-	{
-	Window w1,w2;
-	int i1,i2;
+	}
 
 	XQueryPointer(disp,win,&w1,&w2,&i1,&i2,&mouse_x,&mouse_y,&mouse_b);
-	}
 
 	demotbl[demo].draw();
 	Redraw();
-	}
+    }
 
     return EXIT_SUCCESS;
 }
@@ -440,12 +443,20 @@ static void Error(char *p)
     exit(EXIT_FAILURE);
 }
 
+static void SysError(char *p)
+{
+    perror(p);
+    exit(EXIT_FAILURE);
+}
+
 static void *Grab(size_t s)
 {
     void *p;
 
     if (!(p=malloc(s)))
-    	Error("malloc()");
+    {
+    	SysError("malloc()");
+    }
 
     return p;
 }
@@ -463,16 +474,16 @@ static void Bounce(int *x, int *y, int *ix, int *iy)
     *y+=*iy;
 
     if (*x<0 || *x>=width)
-    	{
+    {
 	*ix=-(*ix);
 	*x+=*ix;
-	}
+    }
 
     if (*y<0 || *y>=height)
-    	{
+    {
 	*iy=-(*iy);
 	*y+=*iy;
-	}
+    }
 }
 
 
@@ -487,35 +498,43 @@ static void OpenX(void)
     /* Open display and find an appropriate visual
     */
     if (!(disp=XOpenDisplay(NULL)))
+    {
 	Error("Couldn't open X display");
+    }
 
     if (!XMatchVisualInfo(disp,DefaultScreen(disp),32,TrueColor,&visual) &&
 	!XMatchVisualInfo(disp,DefaultScreen(disp),24,TrueColor,&visual) &&
 	!XMatchVisualInfo(disp,DefaultScreen(disp),16,TrueColor,&visual) &&
 	!XMatchVisualInfo(disp,DefaultScreen(disp),15,TrueColor,&visual))
-	    Error("Couldn't find a visual\n");
+    {
+	Error("Couldn't find a visual");
+    }
 
     font=XLoadQueryFont(disp,"fixed");
 
     if (!font)
+    {
 	Error("Couldn't load font fixed");
+    }
 
     width=640;
     height=480;
 
     if (!use_root)
+    {
 	win=XCreateWindow(disp,DefaultRootWindow(disp),
 			  0,0,width,height,0,
 			  visual.depth,
 			  InputOutput,
 			  visual.visual,
 			  0,NULL);
+    }
     else
-	{
-    	win=DefaultRootWindow(disp);
+    {
+	win=DefaultRootWindow(disp);
 	width=DisplayWidth(disp,DefaultScreen(disp));
 	height=DisplayHeight(disp,DefaultScreen(disp));
-	}
+    }
 
     centre_x=width/2;
     centre_y=height/2;
@@ -553,12 +572,12 @@ static void OpenX(void)
 		 &gc_val);
 
     if (use_root)
-	{
+    {
 	/*
 	XSetCloseDownMode(disp,RetainTemporary);
 	XSetWindowBackgroundPixmap(disp,win,pix);
 	*/
-	}
+    }
 
 
     /* TODO: XImage creation */
@@ -585,11 +604,13 @@ static void ClsCol(unsigned long col)
 static void Redraw(void)
 {
     if (demotbl[demo].type==UsesPixmap)
+    {
 	XCopyArea(disp,pix,win,gc,0,0,width,height,0,0);
+    }
     else
-    	{
+    {
 	/* TODO: XImage copy */
-	}
+    }
     /* XFlush(disp); */
     XSync(disp,FALSE);
 }
@@ -619,10 +640,10 @@ static void Plot(int x,int y,int col)
 static void Circle(int x,int y,int r,int col)
 {
     if (r<1)
-    	{
+    {
 	Plot(x,y,col);
 	return;
-	}
+    }
 
     SetCol(col);
     XDrawArc(disp,pix,gc,x-r,y-r,r*2,r*2,0,64*360);
@@ -632,10 +653,10 @@ static void Circle(int x,int y,int r,int col)
 static void FCircle(int x,int y,int r,int col)
 {
     if (r<1)
-    	{
+    {
 	Plot(x,y,col);
 	return;
-	}
+    }
 
     SetCol(col);
     XFillArc(disp,pix,gc,x-r,y-r,r*2,r*2,0,64*360);
@@ -664,10 +685,10 @@ static void Print(int x,int y,int col,char *fmt,...)
 static void Rect(int x,int y,int w,int h,int col)
 {
     if (w==0 && h==0)
-	{
+    {
 	Plot(x,y,col);
 	return;
-	}
+    }
 
     SetCol(col);
     XDrawRectangle(disp,pix,gc,x,y,w,h);
@@ -677,10 +698,10 @@ static void Rect(int x,int y,int w,int h,int col)
 static void FRect(int x,int y,int w,int h,int col)
 {
     if (w==0 && h==0)
-	{
+    {
 	Plot(x,y,col);
 	return;
-	}
+    }
 
     SetCol(col);
     XFillRectangle(disp,pix,gc,x,y,w,h);
@@ -692,7 +713,9 @@ static void Polygon(XPoint p[], int no, int col)
     int f;
 
     for(f=0;f<no;f++)
+    {
     	LineP(p+f,p+(f+1)%no,col);
+    }
 }
 
 
@@ -723,7 +746,9 @@ static void SetCol(unsigned long col)
     static unsigned long last_col=123;
 
     if (col==last_col)
+    {
     	return;
+    }
 
     last_col=col;
 
@@ -734,12 +759,14 @@ static void SetCol(unsigned long col)
 static void HandleKey(XKeyEvent *key)
 {
     switch(XLookupKeysym(key,0))
-    	{
+    {
 	case XK_Prior:
 	    demo--;
 
 	    if (demo<0)
+	    {
 	    	demo=NO_DEMOS-1;
+	    }
 
 	    XStoreName(disp,win,demotbl[demo].name);
 	    Cls();
@@ -754,14 +781,14 @@ static void HandleKey(XKeyEvent *key)
 
 	default:
 	    break;
-	}
+    }
 }
 
 
 static void HandleMouse(int x, int y, int b, Mouse mode)
 {
     switch(mode)
-    	{
+    {
 	case MousePress:
 	    mouse_b|=(1<<(b-1));
 	    break;
@@ -772,7 +799,7 @@ static void HandleMouse(int x, int y, int b, Mouse mode)
 
 	default:
 	    break;
-	}
+    }
 
     mouse_x=x;
     mouse_y=y;
@@ -784,7 +811,9 @@ static int AngToCol(int ang, int no_col)
     int d;
 
     if (ang>1800)
+    {
     	ang=1800-(ang-1800);
+    }
 
     d=(int)((no_col/1800.0)*(double)ang);
 
@@ -826,17 +855,19 @@ static void RotateX(double cx, double cy, double cz,
     double dy,dz,si,co;
 
     while(a<0)
+    {
     	a+=3600;
+    }
 
     a%=3600;
 
     if (a==0)
-	{
+    {
 	*x=ix;
 	*y=iy;
 	*z=iz;
 	return;
-	}
+    }
 
     dy=iy-cy;
     dz=iz-cz;
@@ -858,17 +889,19 @@ static void RotateY(double cx, double cy, double cz,
     double dx,dz,si,co;
 
     while(a<0)
+    {
     	a+=3600;
+    }
 
     a%=3600;
 
     if (a==0)
-	{
+    {
 	*x=ix;
 	*y=iy;
 	*z=iz;
 	return;
-	}
+    }
 
     dx=ix-cx;
     dz=iz-cz;
@@ -890,17 +923,19 @@ static void RotateZ(double cx, double cy, double cz,
     double dy,dx,si,co;
 
     while(a<0)
+    {
     	a+=3600;
+    }
 
     a%=3600;
 
     if (a==0)
-	{
+    {
 	*x=ix;
 	*y=iy;
 	*z=iz;
 	return;
-	}
+    }
 
     dy=iy-cy;
     dx=ix-cx;
@@ -919,7 +954,7 @@ static void DrawObj(Obj3D *o, unsigned long cmap[])
     int f;
 
     for(f=0;f<o->no_points;f++)
-    	{
+    {
 	RotateX(0,0,0,
 		o->ps[f].x,o->ps[f].y,o->ps[f].z,
 		&o->workp3[f].x,&o->workp3[f].y,&o->workp3[f].z,
@@ -939,29 +974,38 @@ static void DrawObj(Obj3D *o, unsigned long cmap[])
 		o->origin.y+o->workp3[f].y,
 		o->origin.z+o->workp3[f].z,
 		o->workxp+f);
-	}
+    }
 
     for(f=0;f<o->no_poly;f++)
-	{
+    {
 	static XPoint p[MAX_POLY_POINTS];
 	int r;
 	int c=-1;
 	int col;
 
 	for(r=0;r<o->poly[f].no;r++)
+	{
 	    p[r]=o->workxp[o->poly[f].p[r]];
+	}
 
 	if (o->cull)
+	{
 	    c=(p[0].x-p[1].x)*(p[2].y-p[1].y)-(p[0].y-p[1].y)*(p[2].x-p[1].x);
+	}
 
 	if (o->col!=-1)
+	{
 	    col=cmap[o->col];
+	}
 	else
+	{
 	    col=cmap[o->poly[f].col];
+	}
 
 	if (c<0)
+	{
 	    switch(o->mode)
-		{
+	    {
 		case MODE_SOLID:
 		    FPolygon(p,o->poly[f].no,col);
 		    break;
@@ -973,8 +1017,9 @@ static void DrawObj(Obj3D *o, unsigned long cmap[])
 		default:
 		    Polygon(p,o->poly[f].no,col);
 		    break;
-		}
+	    }
 	}
+    }
 }
 
 
@@ -987,7 +1032,7 @@ static int ZSort(const void *p1, const void *p2)
     o2=p2;
 
     switch(o1->type)
-    	{
+    {
 	case eObj:
 	    z1=((const Obj3D *)o1->p)->origin.z;
 	    break;
@@ -1003,10 +1048,10 @@ static int ZSort(const void *p1, const void *p2)
 	default:
 	    z1=-1;
 	    break;
-	}
+    }
 
     switch(o2->type)
-    	{
+    {
 	case eObj:
 	    z2=((const Obj3D *)o2->p)->origin.z;
 	    break;
@@ -1022,7 +1067,7 @@ static int ZSort(const void *p1, const void *p2)
 	default:
 	    z2=-1;
 	    break;
-	}
+    }
 
     return (int)(z2-z1);
 }
@@ -1037,7 +1082,7 @@ static int InvZSort(const void *p1, const void *p2)
     o2=p2;
 
     switch(o1->type)
-    	{
+    {
 	case eObj:
 	    z1=((const Obj3D *)o1->p)->origin.z;
 	    break;
@@ -1053,10 +1098,10 @@ static int InvZSort(const void *p1, const void *p2)
 	default:
 	    z1=-1;
 	    break;
-	}
+    }
 
     switch(o2->type)
-    	{
+    {
 	case eObj:
 	    z2=((const Obj3D *)o2->p)->origin.z;
 	    break;
@@ -1072,7 +1117,7 @@ static int InvZSort(const void *p1, const void *p2)
 	default:
 	    z2=-1;
 	    break;
-	}
+    }
 
     return (int)(z1-z2);
 }
@@ -1088,17 +1133,21 @@ static void DrawList(WorldObj *w, int no, unsigned long cmap[],
     Rect3D *r;
 
     if (do_sort)
-    	{
+    {
 	if (inv_z_order)
+	{
 	    qsort(w,no,sizeof(WorldObj),InvZSort);
+	}
 	else
+	{
 	    qsort(w,no,sizeof(WorldObj),ZSort);
 	}
+    }
 
     for(f=0;f<no;f++)
-    	{
+    {
 	switch(w[f].type)
-	    {
+	{
 	    case eObj:
 		DrawObj(w[f].p,cmap);
 		break;
@@ -1107,10 +1156,12 @@ static void DrawList(WorldObj *w, int no, unsigned long cmap[],
 		s=w[f].p;
 
 		if (Project(s->origin.x,s->origin.y,s->origin.z,&xp))
+		{
 		    if (Project(s->origin.x+s->radius,s->origin.y,
 		    			s->origin.z,&xp2))
+		    {
 			switch(s->mode)
-			    {
+			{
 			    case MODE_SOLID:
 				FCircle(xp.x,xp.y,xp2.x-xp.x,cmap[s->col]);
 				break;
@@ -1121,23 +1172,26 @@ static void DrawList(WorldObj *w, int no, unsigned long cmap[],
 				FCircle(xp.x,xp.y,xp2.x-xp.x,black);
 				Circle(xp.x,xp.y,xp2.x-xp.x,cmap[s->col]);
 				break;
-			    }
+			}
+		    }
+		}
 		break;
 
 	    case eRect:
 		r=w[f].p;
 
 		if (Project(r->origin.x,r->origin.y,r->origin.z,&xp))
+		{
 		    if (Project(r->origin.x+r->w,r->origin.y+r->h,
 		    			r->origin.z,&xp2))
-			{
+		    {
 			int w,h;
 
 			w=xp2.x-xp.x;
 			h=xp2.y-xp.y;
 
 			switch(r->mode)
-			    {
+			{
 			    case MODE_SOLID:
 				FRect(xp.x,xp.y,w,h,cmap[r->col]);
 				break;
@@ -1148,22 +1202,25 @@ static void DrawList(WorldObj *w, int no, unsigned long cmap[],
 				FRect(xp.x,xp.y,w,h,black);
 				Rect(xp.x,xp.y,w,h,cmap[r->col]);
 				break;
-			    }
 			}
+		    }
+		}
 		break;
 
 	    case eParticle:
 		p=w[f].p;
 
 		if (Project(p->origin.x,p->origin.y,p->origin.z,&xp))
+		{
 		    Plot(xp.x,xp.y,cmap[p->col]);
+		}
 
 		break;
 
 	    default:
 		break;
-	    }
 	}
+    }
 }
 
 
@@ -1185,28 +1242,28 @@ static void DrawSubList(Obj3D *o, int obj_no,
     i=0;
 
     for(f=0;f<obj_no;f++,i++)
-    	{
+    {
 	w[i].type=eObj;
 	w[i].p=o+f;
-	}
+    }
 
     for(f=0;f<sphere_no;f++,i++)
-    	{
+    {
 	w[i].type=eSphere;
 	w[i].p=s+f;
-	}
+    }
 
     for(f=0;f<rect_no;f++,i++)
-    	{
+    {
 	w[i].type=eRect;
 	w[i].p=r+f;
-	}
+    }
 
     for(f=0;f<particle_no;f++,i++)
-    	{
+    {
 	w[i].type=eParticle;
 	w[i].p=p+f;
-	}
+    }
 
     DrawList(w,no,cmap,inv_z_order,do_sort);
 
@@ -1224,7 +1281,9 @@ static void ExampleDemo(void)
     Print(0,20,GetCol(255,255,255),"X: %d  Y:%d  B:%d",mouse_x,mouse_y,mouse_b);
 
     if (mouse_b&Button1Mask)
+    {
 	Line(0,0,mouse_x,mouse_y,GetCol(RND(0xff),RND(0xff),RND(0xff)));
+    }
 }
 
 
@@ -1240,10 +1299,10 @@ static void DropDemo(void)
     static time_t last=0;
 
     typedef struct Drop
-    	{
+    {
 	int		x,y,r,c;
 	struct Drop	*next;
-	} Drop;
+    } Drop;
 
     static Drop *head=NULL;
     static Drop *tail=NULL;
@@ -1251,28 +1310,30 @@ static void DropDemo(void)
     Drop *d;
 
     if (!init)
-    	{
+    {
 	int f;
 
 	for(f=0;f<256;f++)
+	{
 	    col[f]=GetCol(255-f,255-f,255-f);
+	}
 
 	init=TRUE;
-	}
+    }
 
     if (mouse_b&Button3Mask)
-    	{
+    {
 	static time_t bounce=0;
 
 	if (bounce!=time(NULL))
-	    {
+	{
 	    clr=!clr;
 	    bounce=time(NULL);
-	    }
 	}
+    }
 
     if (mouse_b&Button1Mask /*&& (last!=time(NULL))*/)
-	{
+    {
 	Drop *new;
 
 	new=Grab(sizeof *new);
@@ -1284,45 +1345,53 @@ static void DropDemo(void)
 	new->next=NULL;
 
 	if (!head)
+	{
 	    head=tail=new;
+	}
 	else
-	    {
+	{
 	    tail->next=new;
 	    tail=new;
-	    }
+	}
 
 	last=time(NULL);
-	}
+    }
 
     if (clr)
+    {
 	Cls();
+    }
 
     d=head;
 
     while(d)
-    	{
+    {
 	if (d->c>=256)
-	    {
+	{
 	    Drop *t;
 
 	    if (d->next)
+	    {
 	    	head=d->next;
+	    }
 	    else
+	    {
 	    	head=tail=NULL;
+	    }
 
 	    t=d;
 	    d=d->next;
 
 	    Release(t);
-	    }
+	}
 	else
-	    {
+	{
 	    Circle(d->x,d->y,d->r,col[d->c]);
 	    d->r+=scale;
 	    d->c+=speed;
 	    d=d->next;
-	    }
 	}
+    }
 }
 
 
@@ -1338,12 +1407,12 @@ static void AutoDropDemo(void)
     static time_t last=0;
 
     typedef struct Drop
-    	{
+    {
 	int		x,y,r,c;
 	int		speed;
 	int		scale;
 	struct Drop	*next;
-	} Drop;
+    } Drop;
 
     static Drop *head=NULL;
     static Drop *tail=NULL;
@@ -1352,17 +1421,19 @@ static void AutoDropDemo(void)
     int f;
 
     if (!init)
-    	{
+    {
 	int f;
 
 	for(f=0;f<256;f++)
+	{
 	    col[f]=GetCol(MAX(255-f*2,0),MAX(255-f*2,0),255-f);
+	}
 
 	init=TRUE;
-	}
+    }
 
     if (last!=time(NULL) && !head)
-	{
+    {
 	int x,y,sc;
 
 	x=RND(width);
@@ -1370,7 +1441,7 @@ static void AutoDropDemo(void)
 	sc=scale;
 
 	for(f=0;f<num;f++)
-	    {
+	{
 	    Drop *new;
 
 	    new=Grab(sizeof *new);
@@ -1384,49 +1455,55 @@ static void AutoDropDemo(void)
 	    new->next=NULL;
 
 	    if (!head)
+	    {
 		head=tail=new;
+	    }
 	    else
-		{
+	    {
 		tail->next=new;
 		tail=new;
-		}
 	    }
+	}
 
 	last=time(NULL);
-	}
+    }
 
     /* Cls(); */
     d=head;
 
     while(d)
-    	{
+    {
 	if (d->c>=256)
-	    {
+	{
 	    Drop *t;
 
 	    if (d->next)
-	    	head=d->next;
+	    {
+		head=d->next;
+	    }
 	    else
-	    	head=tail=NULL;
+	    {
+		head=tail=NULL;
+	    }
 
 	    t=d;
 	    d=d->next;
 
 	    Release(t);
-	    }
+	}
 	else
-	    {
+	{
 	    Circle(d->x,d->y,d->r,col[d->c]);
 	    d->r+=d->scale;
 	    d->c+=d->speed;
 	    d=d->next;
-	    }
 	}
+    }
 }
 
 
 /* ---------------------------------------- FAST DROP DEMO
-*/
+ */
 static void FastDropDemo(void)
 {
     static const int speed=30;
@@ -1437,10 +1514,10 @@ static void FastDropDemo(void)
     static time_t last=0;
 
     typedef struct Drop
-    	{
+    {
 	int		x,y,r,c;
 	struct Drop	*next;
-	} Drop;
+    } Drop;
 
     static Drop *head=NULL;
     static Drop *tail=NULL;
@@ -1448,28 +1525,30 @@ static void FastDropDemo(void)
     Drop *d;
 
     if (!init)
-    	{
+    {
 	int f;
 
 	for(f=0;f<256;f++)
+	{
 	    col[f]=GetCol(255-f,255-f,255-f);
+	}
 
 	init=TRUE;
-	}
+    }
 
     if (mouse_b&Button3Mask)
-    	{
+    {
 	static time_t bounce=0;
 
 	if (bounce!=time(NULL))
-	    {
+	{
 	    clr=!clr;
 	    bounce=time(NULL);
-	    }
 	}
+    }
 
     if (mouse_b&Button1Mask /*&& (last!=time(NULL))*/)
-	{
+    {
 	Drop *new;
 
 	new=Grab(sizeof *new);
@@ -1481,50 +1560,58 @@ static void FastDropDemo(void)
 	new->next=NULL;
 
 	if (!head)
+	{
 	    head=tail=new;
+	}
 	else
-	    {
+	{
 	    tail->next=new;
 	    tail=new;
-	    }
+	}
 
 	last=time(NULL);
-	}
+    }
 
     if (clr)
+    {
 	Cls();
+    }
 
     d=head;
 
     while(d)
-    	{
+    {
 	if (d->c>=256)
-	    {
+	{
 	    Drop *t;
 
 	    if (d->next)
-	    	head=d->next;
+	    {
+		head=d->next;
+	    }
 	    else
-	    	head=tail=NULL;
+	    {
+		head=tail=NULL;
+	    }
 
 	    t=d;
 	    d=d->next;
 
 	    Release(t);
-	    }
+	}
 	else
-	    {
+	{
 	    Rect(d->x-d->r/2,d->y-d->r/2,d->r,d->r,col[d->c]);
 	    d->r+=scale;
 	    d->c+=speed;
 	    d=d->next;
-	    }
 	}
+    }
 }
 
 
 /* ---------------------------------------- TRAIL DEMO
-*/
+ */
 static void TrailDemo(void)
 {
     static const int NO=20;
@@ -1534,15 +1621,15 @@ static void TrailDemo(void)
     static unsigned long col[256];
 
     static struct
-    	{
+    {
 	int	x,y,xi,yi;
-	} *p;
+    } *p;
 
     typedef struct Drop
-    	{
+    {
 	int		x,y,r,c;
 	struct Drop	*next;
-	} Drop;
+    } Drop;
 
     static Drop *head=NULL;
     static Drop *tail=NULL;
@@ -1551,28 +1638,31 @@ static void TrailDemo(void)
     int f;
 
     if (!init)
-    	{
+    {
 	for(f=0;f<256;f++)
+	{
 	    col[f]=GetCol(255-f,255-f,255-f);
+	}
 
 	p=Grab(sizeof(*p)*NO);
 
 	for(f=0;f<NO;f++)
-	    {
+	{
 	    p[f].x=RND(width);
 	    p[f].y=RND(height);
 
-	    do  {
+	    do
+	    {
 		p[f].xi=RND(5)-2;
 		p[f].yi=RND(5)-2;
-		} while (p[f].xi==0 || p[f].yi==0);
-	    }
+	    } while (p[f].xi==0 || p[f].yi==0);
+	}
 
 	init=TRUE;
-	}
+    }
 
     for(f=0;f<NO;f++)
-    	{
+    {
 	int r;
 
 	new=Grab(sizeof *new);
@@ -1584,48 +1674,54 @@ static void TrailDemo(void)
 	new->next=NULL;
 
 	if (!head)
+	{
 	    head=tail=new;
+	}
 	else
-	    {
+	{
 	    tail->next=new;
 	    tail=new;
-	    }
+	}
 
 	Bounce(&p[f].x,&p[f].y,&p[f].xi,&p[f].yi);
-	}
+    }
 
     /* Cls(); */
     d=head;
 
     while(d)
-    	{
+    {
 	if (d->c>=256)
-	    {
+	{
 	    Drop *t;
 
 	    if (d->next)
-	    	head=d->next;
+	    {
+		head=d->next;
+	    }
 	    else
-	    	head=tail=NULL;
+	    {
+		head=tail=NULL;
+	    }
 
 	    t=d;
 	    d=d->next;
 
 	    Release(t);
-	    }
+	}
 	else
-	    {
+	{
 	    FRect(d->x-d->r/2,d->y-d->r/2,d->r,d->r,col[d->c]);
 	    d->r+=scale;
 	    d->c+=speed;
 	    d=d->next;
-	    }
 	}
+    }
 }
 
 
 /* ---------------------------------------- TUNNEL DEMO
-*/
+ */
 static void TunnelDemo(void)
 {
     static const int speed=100;
@@ -1644,14 +1740,14 @@ static void TunnelDemo(void)
     static int create=0;
 
     typedef struct Drop
-    	{
+    {
 	double		x[points];
 	double		y[points];
 	double		z;
 	int		r,c;
 	int		ang;
 	struct Drop	*next;
-	} Drop;
+    } Drop;
 
     static Drop *head=NULL;
     static Drop *tail=NULL;
@@ -1660,44 +1756,46 @@ static void TunnelDemo(void)
     int f;
 
     if (!init)
-    	{
+    {
 	for(f=0;f<256;f++)
+	{
 	    col[f]=GetCol(255-f,255-f,255-f);
+	}
 
 	si=Grab(sizeof(double)*points);
 	co=Grab(sizeof(double)*points);
 
 	for(f=0;f<points;f++)
-	    {
+	{
 	    si[f]=sin(RAD(360.0/points*f));
 	    co[f]=cos(RAD(360.0/points*f));
-	    }
+	}
 
 	init=TRUE;
-	}
+    }
 
     if (mouse_b&Button3Mask)
-    	{
+    {
 	static time_t bounce=0;
 
 	if (bounce!=time(NULL))
-	    {
+	{
 	    clr=!clr;
 	    bounce=time(NULL);
-	    }
 	}
+    }
 
     if (create==0)
-	{
+    {
 	Drop *new;
 
 	new=Grab(sizeof *new);
 
 	for(f=0;f<points;f++)
-	    {
+	{
 	    new->x[f]=(RND(radius>>1)+radius>>1)*si[f];
 	    new->y[f]=(RND(radius>>1)+radius>>1)*co[f];
-	    }
+	}
 
 	new->r=radius;
 	new->z=max_z;
@@ -1706,73 +1804,89 @@ static void TunnelDemo(void)
 	new->ang=RND(20)-10;
 
 	if (new->ang<0)
+	{
 	    new->ang+=3600;
+	}
 
 	new->next=NULL;
 
 	if (!head)
+	{
 	    head=tail=new;
+	}
 	else
-	    {
+	{
 	    tail->next=new;
 	    tail=new;
-	    }
+	}
 
 	create=delay;
-	}
+    }
     else
-    	create--;
+    {
+	create--;
+    }
 
     if (clr)
+    {
 	Cls();
+    }
 
     d=head;
 
     while(d)
-    	{
+    {
 	if (d->z<10)
-	    {
+	{
 	    Drop *t;
 
 	    if (d->next)
-	    	head=d->next;
+	    {
+		head=d->next;
+	    }
 	    else
-	    	head=tail=NULL;
+	    {
+		head=tail=NULL;
+	    }
 
 	    t=d;
 	    d=d->next;
 
 	    Release(t);
-	    }
+	}
 	else
-	    {
+	{
 	    XPoint p[points];
 
 	    if (d->c)
+	    {
 		d->c=MAX(0,d->c-10);
+	    }
 
 	    for(f=0;f<points;f++)
-		{
+	    {
 		RotateZ(0,0,d->z,
 			d->x[f],d->y[f],d->z,
 			&d->x[f],&d->y[f],&d->z,
 			d->ang);
 
 		Project(d->x[f],d->y[f],d->z,p+f);
-		}
+	    }
 
 	    for(f=0;f<points;f++)
+	    {
 		LineP(p+f,p+((f+1)%points),col[d->c]);
+	    }
 
 	    d->z-=speed;
 	    d=d->next;
-	    }
 	}
+    }
 }
 
 
 /* ---------------------------------------- STAR DEMO
-*/
+ */
 static void StarDemo(void)
 {
 #   define TYPE Particle3D
@@ -1782,36 +1896,36 @@ static void StarDemo(void)
     static const int no_poly=4;
 
     static Point3D pset[4]=
-    			{
-			    {-100,50,100},
-			    {100,50,100},
-			    {0,-50,100},
-			    {0,0,-300},
-			};
+    {
+	{-100,50,100},
+	{100,50,100},
+	{0,-50,100},
+	{0,0,-300},
+    };
 
     static Poly3D plist[4]=
-    			{
-			    {
-				{0,3,1},
-				3,
-				0
-			    },
-			    {
-				{0,1,2},
-				3,
-				0
-			    },
-			    {
-				{0,2,3},
-				3,
-				0
-			    },
-			    {
-				{1,3,2},
-				3,
-				0
-			    },
-			};
+    {
+	{
+	    {0,3,1},
+	    3,
+	    0
+	},
+	{
+	    {0,1,2},
+	    3,
+	    0
+	},
+	{
+	    {0,2,3},
+	    3,
+	    0
+	},
+	{
+	    {1,3,2},
+	    3,
+	    0
+	},
+    };
 
     static Obj3D *obj;
 
@@ -1839,14 +1953,16 @@ static void StarDemo(void)
     int f;
 
     if (!init)
-    	{
+    {
 	for(f=0;f<256;f++)
+	{
 	    col[f]=GetCol(255-f,255-f,255-f);
+	}
 
 	star=Grab(sizeof(TYPE)*no);
 
 	for(f=0;f<no;f++)
-	    {
+	{
 	    star[f].origin.x=RND(radius)-radius/2;
 	    star[f].origin.y=RND(radius)-radius/2;
 	    star[f].origin.z=RND(max_z);
@@ -1856,12 +1972,12 @@ static void StarDemo(void)
 	    star[f].mode=MODE_EDGE;
 #	    endif
 	    star[f].col=255;
-	    }
+	}
 
 	obj=Grab(sizeof(Obj3D)*no_obj);
 
 	for(f=0;f<no_obj;f++)
-	    {
+	{
 	    obj[f].no_points=no_points;
 	    obj[f].no_poly=no_poly;
 	    obj[f].ps=pset;
@@ -1879,97 +1995,103 @@ static void StarDemo(void)
 	    obj[f].origin.z=RND(radius);
 
 	    obj[f].col=255;
-	    }
+	}
 
 	init=TRUE;
-	}
+    }
 
     if (mouse_b&Button3Mask)
-    	{
+    {
 	static time_t bounce=0;
 
 	if (bounce!=time(NULL))
-	    {
+	{
 	    clr=!clr;
 	    bounce=time(NULL);
-	    }
 	}
+    }
 
     if (!clr)
-    	{
+    {
 	if (speed<max_speed)
+	{
 	    speed+=speed_inc;
 	}
+    }
     else
-    	{
+    {
 	if (speed>min_speed)
+	{
 	    speed-=speed_inc;
 	}
+    }
 
     Cls();
 
     for(f=0;f<no;f++)
-    	{
+    {
 	if (star[f].origin.z<1000)
-	    {
+	{
 	    star[f].origin.x=RND(radius)-radius/2;
 	    star[f].origin.y=RND(radius)-radius/2;
 	    star[f].origin.z=max_z;
 	    star[f].col=255;
-	    }
+	}
 	else
-	    {
+	{
 	    /*
-	    RotateZ(0,0,0,
-		    star[f].origin.x,star[f].origin.y,star[f].origin.z,
-		    &star[f].origin.x,&star[f].origin.y,&star[f].origin.z,
-		    1);
-	    */
+	       RotateZ(0,0,0,
+	       star[f].origin.x,star[f].origin.y,star[f].origin.z,
+	       &star[f].origin.x,&star[f].origin.y,&star[f].origin.z,
+	       1);
+	     */
 
 	    if (speed>min_speed)
-		{
+	    {
 		XPoint p;
 		XPoint p2;
 
 		Project(star[f].origin.x,star[f].origin.y,star[f].origin.z,&p);
 		Project(star[f].origin.x,star[f].origin.y,star[f].origin.z+speed*speed,&p2);
 		LineP(&p,&p2,col[star[f].col]);
-		}
+	    }
 
 	    star[f].origin.z-=20*speed;
 
 	    if (star[f].col)
-	    	star[f].col--;
-	    }
+		star[f].col--;
 	}
+    }
 
     for(f=0;f<no_obj;f++)
-    	{
+    {
 	obj[f].origin.z-=100*speed;
 	obj[f].z_rot+=10;
 
 	if (obj[f].col)
+	{
 	    obj[f].col=MAX(0,obj[f].col-speed);
+	}
 
 	if (obj[f].origin.z<400)
-	    {
+	{
 	    obj[f].origin.x=RND(radius/8)-radius/16;
 	    obj[f].origin.y=RND(radius/8)-radius/16;
 	    obj[f].origin.z=radius*2;
 	    obj[f].col=255;
-	    }
 	}
+    }
 
 #   if defined(ISSPHERE)
-	DrawSubList(obj,no_obj,star,no,NULL,0,NULL,0,col,False,True);
+    DrawSubList(obj,no_obj,star,no,NULL,0,NULL,0,col,False,True);
 #   else
-	DrawSubList(obj,no_obj,NULL,0,NULL,0,star,no,col,False,True);
+    DrawSubList(obj,no_obj,NULL,0,NULL,0,star,no,col,False,True);
 #   endif
 }
 
 
 /* ---------------------------------------- STAR SPHERE DEMO
-*/
+ */
 static void StarSphereDemo(void)
 {
     static const int no=100;
@@ -1993,15 +2115,17 @@ static void StarSphereDemo(void)
     int f;
 
     if (!init)
-    	{
+    {
 	for(f=0;f<256;f++)
+	{
 	    col[f]=GetCol(255-f,255-f,255-f);
+	}
 
 	star=Grab(sizeof(Sphere3D)*no);
 	wo=Grab(sizeof(WorldObj)*no);
 
 	for(f=0;f<no;f++)
-	    {
+	{
 	    star[f].origin.x=RND(radius)-radius/2;
 	    star[f].origin.y=RND(radius)-radius/2;
 	    star[f].origin.z=RND(max_z);
@@ -2011,59 +2135,65 @@ static void StarSphereDemo(void)
 
 	    wo[f].type=eSphere;
 	    wo[f].p=star+f;
-	    }
+	}
 
 	init=TRUE;
-	}
+    }
 
     if (mouse_b&Button3Mask)
-    	{
+    {
 	static time_t bounce=0;
 
 	if (bounce!=time(NULL))
-	    {
+	{
 	    clr=!clr;
 	    bounce=time(NULL);
-	    }
 	}
+    }
 
     if (!clr)
-    	{
+    {
 	if (speed<max_speed)
+	{
 	    speed+=speed_inc;
 	}
+    }
     else
-    	{
+    {
 	if (speed>min_speed)
+	{
 	    speed-=speed_inc;
 	}
+    }
 
     Cls();
 
     for(f=0;f<no;f++)
-    	{
+    {
 	if (star[f].origin.z<1000)
-	    {
+	{
 	    star[f].origin.x=RND(radius)-radius/2;
 	    star[f].origin.y=RND(radius)-radius/2;
 	    star[f].origin.z=max_z;
 	    star[f].col=255;
-	    }
+	}
 	else
-	    {
+	{
 	    star[f].origin.z-=base_speed*speed;
 
 	    if (star[f].col)
-	    	star[f].col=MAX(0,star[f].col-speed);
+	    {
+		star[f].col=MAX(0,star[f].col-speed);
 	    }
 	}
+    }
 
     DrawList(wo,no,col,False,True);
 }
 
 
 /* ---------------------------------------- TEST 3D DEMO
-*/
+ */
 static void Test3DDemo(void)
 {
     static const int no_particle=2000;
@@ -2075,66 +2205,66 @@ static void Test3DDemo(void)
     static XPoint xpwork[8];
 
     static Point3D pset[8]=
-    			{
-			    {-50,-200,50},
-			    {50,-200,50},
-			    {50,-200,-50},
-			    {-50,-200,-50},
-
-			    {50,200,50},
-			    {-50,200,50},
-			    {-50,200,-50},
-			    {50,200,-50},
-			};
+    {
+	{-50,-200,50},
+	{50,-200,50},
+	{50,-200,-50},
+	{-50,-200,-50},
+
+	{50,200,50},
+	{-50,200,50},
+	{-50,200,-50},
+	{50,200,-50},
+    };
 
     static Poly3D plist[6]=
-    			{
-			    {
-				{0,1,2,3},
-				4,
-				0
-			    },
-			    {
-				{4,5,6,7},
-				4,
-				0
-			    },
-			    {
-				{0,5,4,1},
-				4,
-				1
-			    },
-			    {
-				{2,1,4,7},
-				4,
-				2
-			    },
-			    {
-				{3,2,7,6},
-				4,
-				3
-			    },
-			    {
-				{0,3,6,5},
-				4,
-				2
-			    },
-			};
+    {
+	{
+	    {0,1,2,3},
+	    4,
+	    0
+	},
+	{
+	    {4,5,6,7},
+	    4,
+	    0
+	},
+	{
+	    {0,5,4,1},
+	    4,
+	    1
+	},
+	{
+	    {2,1,4,7},
+	    4,
+	    2
+	},
+	{
+	    {3,2,7,6},
+	    4,
+	    3
+	},
+	{
+	    {0,3,6,5},
+	    4,
+	    2
+	},
+    };
 
     static Obj3D obj=
-    		{
-		    8,
-		    6,
-		    {0,0,1000},
-		    pset,
-		    plist,
-		    pwork,
-		    xpwork,
-		    0,0,0,
-		    MODE_SOLID,
-		    -1,
-		    True
-		};
+    {
+	8,
+	6,
+	{0,0,1000},
+	pset,
+	plist,
+	pwork,
+	xpwork,
+	0,0,0,
+	MODE_SOLID,
+	-1,
+	True
+    };
 
     static Particle3D *p;
     static WorldObj *w;
@@ -2146,7 +2276,7 @@ static void Test3DDemo(void)
     int f;
 
     if (!init)
-    	{
+    {
 	col[0]=white;
 	col[1]=red;
 	col[2]=green;
@@ -2158,74 +2288,84 @@ static void Test3DDemo(void)
 	w=Grab(sizeof(WorldObj)*(no_particle+1));
 
 	for(f=0;f<no_particle;f++)
-	    {
+	{
 	    p[f].origin.x=RND(radius*2)-radius;
 	    p[f].origin.y=RND(radius*2)-radius;
 	    p[f].origin.z=RND(max_z-min_z)+min_z;
+
 	    if (RND(2)==1)
+	    {
 		p[f].origin.z=max_z;
+	    }
 	    else
+	    {
 		p[f].origin.z=min_z;
+	    }
+
 	    p[f].col=0;
 	    w[f].p=p+f;
 	    w[f].type=eParticle;
-	    }
+	}
 
 	w[no_particle].type=eObj;
 	w[no_particle].p=&obj;
 
 	DrawList(w,no_particle+1,col,False,True);
-	}
+    }
 
     if (mouse_b&Button2Mask)
-    	{
+    {
 	static time_t bounce=0;
 
 	if (bounce!=time(NULL))
-	    {
+	{
 	    rot=(rot+1)%3;
 	    bounce=time(NULL);
-	    }
 	}
+    }
 
     if (mouse_b&Button3Mask)
-    	{
+    {
 	static time_t bounce=0;
 
 	if (bounce!=time(NULL))
-	    {
+	{
 	    obj.cull=!obj.cull;
 	    bounce=time(NULL);
-	    }
 	}
+    }
 
     if (mouse_b&Button1Mask)
-    	{
+    {
 	static time_t bounce=0;
 
 	if (bounce!=time(NULL))
-	    {
+	{
 	    obj.mode++;
 
 	    if (obj.mode>MODE_EDGE)
-	    	obj.mode=MODE_SOLID;
+	    {
+		obj.mode=MODE_SOLID;
+	    }
 
 	    bounce=time(NULL);
-	    }
 	}
+    }
 
     Cls();
 
     for(f=0;f<no_particle;f++)
-    	{
+    {
 	p[f].origin.y+=1;
 
 	if (p[f].origin.y>radius)
+	{
 	    p[f].origin.y=-radius;
 	}
+    }
 
     switch(rot)
-    	{
+    {
 	case 0:
 	    Print(0,20,white,"Y rotation");
 	    obj.y_rot+=10;
@@ -2240,7 +2380,7 @@ static void Test3DDemo(void)
 	    break;
 	default:
 	    break;
-	}
+    }
 
     Print(0,30,white,"Mode : %d   Culling: %s",obj.mode,obj.cull ? "on":"off");
 
@@ -2249,7 +2389,7 @@ static void Test3DDemo(void)
 
 
 /* ---------------------------------------- COL SCAPE DEMO
-*/
+ */
 static void ColScapeDemo(void)
 {
     static const int gap=200;
@@ -2263,51 +2403,51 @@ static void ColScapeDemo(void)
     static const double y_base=100.0;
 
     static Point3D pset[8]=
-    			{
-			    {-50,-20,50},
-			    {50,-20,50},
-			    {50,-20,-50},
-			    {-50,-20,-50},
-
-			    {50,20,50},
-			    {-50,20,50},
-			    {-50,20,-50},
-			    {50,20,-50},
-			};
+    {
+	{-50,-20,50},
+	{50,-20,50},
+	{50,-20,-50},
+	{-50,-20,-50},
+
+	{50,20,50},
+	{-50,20,50},
+	{-50,20,-50},
+	{50,20,-50},
+    };
 
     static Poly3D plist[6]=
-    			{
-			    {
-				{0,1,2,3},
-				4,
-				0
-			    },
-			    {
-				{4,5,6,7},
-				4,
-				0
-			    },
-			    {
-				{0,5,4,1},
-				4,
-				0
-			    },
-			    {
-				{2,1,4,7},
-				4,
-				0
-			    },
-			    {
-				{3,2,7,6},
-				4,
-				0
-			    },
-			    {
-				{0,3,6,5},
-				4,
-				0
-			    },
-			};
+    {
+	{
+	    {0,1,2,3},
+	    4,
+	    0
+	},
+	{
+	    {4,5,6,7},
+	    4,
+	    0
+	},
+	{
+	    {0,5,4,1},
+	    4,
+	    0
+	},
+	{
+	    {2,1,4,7},
+	    4,
+	    0
+	},
+	{
+	    {3,2,7,6},
+	    4,
+	    0
+	},
+	{
+	    {0,3,6,5},
+	    4,
+	    0
+	},
+    };
 
     static Obj3D *obj;
 
@@ -2321,7 +2461,7 @@ static void ColScapeDemo(void)
     int f,a;
 
     if (!init)
-    	{
+    {
 	int x,z;
 
 	col[0]=white;
@@ -2339,7 +2479,7 @@ static void ColScapeDemo(void)
 	a=0;
 
 	for(f=0;f<no;f++)
-	    {
+	{
 	    w[f].p=obj+f;
 	    w[f].type=eObj;
 
@@ -2365,26 +2505,26 @@ static void ColScapeDemo(void)
 	    a+=20;
 
 	    if (((f+1)%no_x)==0)
-	    	{
+	    {
 		x=-(no_x/2)*gap;
 		z-=gap;
-		}
 	    }
+	}
 
 	DrawList(w,no,col,False,True);
-	}
+    }
 
     Cls();
 
     a=ang;
 
     for(f=0;f<no;f++)
-    	{
+    {
 	obj[f].origin.y=y_base+sintab[a]*y_range;
 	obj[f].y_rot+=10;
 	obj[f].x_rot+=10;
 	a=(a+5)%3600;
-	}
+    }
 
     ang=(ang+10)%3600;
 
@@ -2393,7 +2533,7 @@ static void ColScapeDemo(void)
 
 
 /* ---------------------------------------- FLUID DEMO
-*/
+ */
 static void FluidDemo(void)
 {
     static const int gap=20;
@@ -2415,13 +2555,15 @@ static void FluidDemo(void)
     int f,a,a2;
 
     if (!init)
-    	{
+    {
 	int x,z,c;
 
 	col=Grab(sizeof(*col)*no_z);
 
 	for(f=0;f<no_z;f++)
+	{
 	    col[f]=GetCol(64,64,255-((no_z-f-1)*2));
+	}
 
 	p=Grab(sizeof(Sphere3D)*no);
 	w=Grab(sizeof(WorldObj)*no);
@@ -2432,7 +2574,7 @@ static void FluidDemo(void)
 	c=0;
 
 	for(f=0;f<no;f++)
-	    {
+	{
 	    w[f].p=p+f;
 	    w[f].type=eSphere;
 
@@ -2448,17 +2590,17 @@ static void FluidDemo(void)
 	    a+=20;
 
 	    if (((f+1)%no_x)==0)
-	    	{
+	    {
 		x=-(no_x/2)*gap;
 		z-=gap;
 		c++;
-		}
 	    }
+	}
 
 	DrawList(w,no,col,False,True);
 
 	init=TRUE;
-	}
+    }
 
     Cls();
 
@@ -2466,16 +2608,16 @@ static void FluidDemo(void)
     a2=ang;
 
     for(f=0;f<no;f++)
-    	{
+    {
 	p[f].origin.y=y_base+(sintab[a]+costab[a])*y_range;
 	a=(a+60)%3600;
 
 	if (((f+1)%no_x)==0)
-	    {
+	{
 	    a2=(a2+60)%3600;
 	    a=a2;
-	    }
 	}
+    }
 
     ang=(ang+60)%3600;
 
@@ -2484,7 +2626,7 @@ static void FluidDemo(void)
 
 
 /* ---------------------------------------- PARTICLE DROP DEMO
-*/
+ */
 static void ParticleDropDemo(void)
 {
     static const int gap=30;
@@ -2521,13 +2663,15 @@ static void ParticleDropDemo(void)
     int f,a,a2;
 
     if (!init)
-    	{
+    {
 	int x,z,c;
 
 	col=Grab(sizeof(*col)*no_z);
 
 	for(f=0;f<no_z;f++)
+	{
 	    col[f]=GetCol(64,64,255-((no_z-f-1)*4));
+	}
 
 	p=Grab(sizeof(Sphere3D)*no);
 	w=Grab(sizeof(WorldObj)*(no+1));
@@ -2538,7 +2682,7 @@ static void ParticleDropDemo(void)
 	c=0;
 
 	for(f=0;f<no;f++)
-	    {
+	{
 	    w[f].p=p+f;
 	    w[f].type=eSphere;
 
@@ -2554,13 +2698,13 @@ static void ParticleDropDemo(void)
 	    a+=20;
 
 	    if (((f+1)%no_x)==0)
-	    	{
+	    {
 		max_x=x;
 		x=-(no_x/2)*gap;
 		z-=gap;
 		c++;
-		}
 	    }
+	}
 
 	min_z=z;
 
@@ -2580,14 +2724,14 @@ static void ParticleDropDemo(void)
 	drop.mode=MODE_SOLID;
 
 	init=TRUE;
-	}
+    }
 
     Cls();
 
     drop.origin.y+=drop_speed;
 
     if (drop.origin.y>y_base)
-	{
+    {
 	amp=init_amp;
 	ang=0;
 	dist=1;
@@ -2596,50 +2740,56 @@ static void ParticleDropDemo(void)
 	drop.origin.x=RND2(max_x,min_x);
 	drop.origin.z=RND2(max_z,min_z);
 	drop.origin.y=drop_y;
-	}
+    }
 
     if (amp>0.0)
-	{
+    {
 	int a;
 
 	if (ang<0)
+	{
 	    ang+=3600;
+	}
 
 	a=ang;
 
 	for(f=0;f<no;f++)
-	    {
+	{
 	    double d;
 	    double y;
 
 	    d=Distance(&ctr,&p[f].origin)/gap;
 
 	    if (d<3.0)
-	    	d=3.0;
+		d=3.0;
 
 	    if (d<dist)
-	    	{
+	    {
 		y=amp/(d/amp_dropoff);
 		a=(int)(ang+(d/ang_dropoff))%3600;
-	
+
 		p[f].origin.y=y_base+y*sintab[a];
-		}
 	    }
+	}
 
 	amp-=amp_decay;
 	ang-=200;
 	dist++;
-	}
+    }
     else
+    {
 	for(f=0;f<no;f++)
+	{
 	    p[f].origin.y=y_base;
+	}
+    }
 
     DrawList(w,no+1,col,False,True);
 }
 
 
 /* ---------------------------------------- POLY DROP DEMO
-*/
+ */
 static void PolyDropDemo(void)
 {
     static const int gap=30;
@@ -2671,7 +2821,7 @@ static void PolyDropDemo(void)
     static Sphere3D drop;
 
     static Obj3D obj=	
-    		{0,0,{0,0,0},NULL,NULL,NULL,NULL,0,0,0,MODE_EDGE,-1,True};
+    {0,0,{0,0,0},NULL,NULL,NULL,NULL,0,0,0,MODE_EDGE,-1,True};
 
     static WorldObj w[2];
 
@@ -2686,13 +2836,15 @@ static void PolyDropDemo(void)
     int f,r;
 
     if (!init)
-    	{
+    {
 	int x,z,c;
 
 	col=Grab(sizeof(*col)*no_z);
 
 	for(f=0;f<no_z;f++)
+	{
 	    col[f]=GetCol(64,64,255-((no_z-f-1)*4));
+	}
 
 	no_poly=(no_z-1)*(no_x-1);
 
@@ -2718,7 +2870,7 @@ static void PolyDropDemo(void)
 	max_z=z=(no_z)*gap+z_off;
 
 	for(f=0;f<no;f++)
-	    {
+	{
 	    pt[f].x=x;
 	    pt[f].y=y_base;
 	    pt[f].z=z;
@@ -2726,13 +2878,13 @@ static void PolyDropDemo(void)
 	    x+=gap;
 
 	    if (((f+1)%no_x)==0)
-	    	{
+	    {
 		max_x=x;
 		x=-(no_x/2)*gap;
 		z-=gap;
 		c++;
-		}
 	    }
+	}
 
 	min_z=z;
 
@@ -2752,7 +2904,7 @@ static void PolyDropDemo(void)
 	r=0;
 
 	for(f=0,r=0;f<no_poly;f++,r++)
-	    {
+	{
 	    poly[f].col=c;
 	    poly[f].no=4;
 
@@ -2762,21 +2914,21 @@ static void PolyDropDemo(void)
 	    poly[f].p[3]=r+no_x;
 
 	    if (((f+1)%(no_x-1))==0)
-		{
+	    {
 		c++;
 		r++;
-		}
 	    }
+	}
 
 	init=TRUE;
-	}
+    }
 
     Cls();
 
     drop.origin.y+=drop_speed;
 
     if (drop.origin.y>y_base)
-	{
+    {
 	amp=init_amp;
 	ang=0;
 	dist=1;
@@ -2785,50 +2937,58 @@ static void PolyDropDemo(void)
 	drop.origin.x=RND2(max_x,min_x);
 	drop.origin.z=RND2(max_z,min_z);
 	drop.origin.y=drop_y;
-	}
+    }
 
     if (amp>0.0)
-	{
+    {
 	int a;
 
 	if (ang<0)
+	{
 	    ang+=3600;
+	}
 
 	a=ang;
 
 	for(f=0;f<no;f++)
-	    {
+	{
 	    double d;
 	    double y;
 
 	    d=Distance(&ctr,&pt[f])/gap;
 
 	    if (d<2.0)
-	    	d=2.0;
+	    {
+		d=2.0;
+	    }
 
 	    if (d<dist)
-	    	{
+	    {
 		y=amp/(d/amp_dropoff);
 		a=(int)(ang+(d/ang_dropoff))%3600;
-	
+
 		pt[f].y=y_base+y*sintab[a];
-		}
 	    }
+	}
 
 	amp-=amp_decay;
 	ang-=200;
 	dist++;
-	}
+    }
     else
+    {
 	for(f=0;f<no;f++)
+	{
 	    pt[f].y=y_base;
+	}
+    }
 
     DrawList(w,2,col,False,False);
 }
 
 
 /* ---------------------------------------- CRATER DEMO
-*/
+ */
 static void CraterDemo(void)
 {
     static const int gap=30;
@@ -2862,7 +3022,7 @@ static void CraterDemo(void)
     static Sphere3D drop;
 
     static Obj3D obj=	
-    		{0,0,{0,0,0},NULL,NULL,NULL,NULL,0,0,0,MODE_SOLID,-1,True};
+	{0,0,{0,0,0},NULL,NULL,NULL,NULL,0,0,0,MODE_SOLID,-1,True};
 
     static WorldObj w[2];
 
@@ -2876,7 +3036,7 @@ static void CraterDemo(void)
     int f,r;
 
     if (!init)
-    	{
+    {
 	int x,z,c;
 
 	col=Grab(sizeof(*col)*no_z);
@@ -2886,7 +3046,9 @@ static void CraterDemo(void)
 	initp.z=z_off+(no_z*gap)/2;
 
 	for(f=0;f<no_z;f++)
+	{
 	    col[f]=GetCol(64,64,255-((no_z-f-1)*3));
+	}
 
 	no_poly=(no_z-1)*(no_x-1)*2;
 
@@ -2900,7 +3062,7 @@ static void CraterDemo(void)
 	max_z=z=(no_z/2)*gap;
 
 	for(f=0;f<no;f++)
-	    {
+	{
 	    pt[f].x=x;
 	    pt[f].y=0;
 	    pt[f].z=z;
@@ -2908,13 +3070,13 @@ static void CraterDemo(void)
 	    x+=gap;
 
 	    if (((f+1)%no_x)==0)
-	    	{
+	    {
 		max_x=x;
 		x=-(no_x/2)*gap;
 		z-=gap;
 		c++;
-		}
 	    }
+	}
 
 	min_z=z;
 
@@ -2935,7 +3097,7 @@ static void CraterDemo(void)
 	r=0;
 
 	for(f=0,r=0;f<no_poly;f+=2,r++)
-	    {
+	{
 	    poly[f].col=c;
 	    poly[f].no=3;
 
@@ -2951,11 +3113,11 @@ static void CraterDemo(void)
 	    poly[f+1].p[2]=r+no_x;
 
 	    if (((f+2)%(no_x-1))==0)
-		{
+	    {
 		r++;
 		c=(c+1)%no_z;
-		}
 	    }
+	}
 
 	obj.origin=initp;
 	obj.no_points=no;
@@ -2972,61 +3134,65 @@ static void CraterDemo(void)
 	w[1].type=eSphere;
 
 	init=TRUE;
-	}
+    }
 
     if (mouse_b&Button1Mask)
-    	{
+    {
 	static time_t bounce=0;
 
 	if (bounce!=time(NULL))
-	    {
+	{
 	    view=!view;
 
 	    if (!view)
-		{
+	    {
 		obj.origin=initp;
 		obj.x_rot=0;
 		obj.y_rot=0;
 		obj.z_rot=0;
-		}
+	    }
 	    else
-	    	obj.origin.z+=800;
+	    {
+		obj.origin.z+=800;
+	    }
 
 	    bounce=time(NULL);
-	    }
 	}
+    }
 
     if (mouse_b&Button3Mask)
-    	{
+    {
 	static time_t bounce=0;
 
 	if (bounce!=time(NULL))
-	    {
+	{
 	    obj.mode++;
 
 	    if (obj.mode>MODE_EDGE)
-	    	obj.mode=MODE_SOLID;
+	    {
+		obj.mode=MODE_SOLID;
+	    }
 
 	    bounce=time(NULL);
-	    }
 	}
+    }
 
     Cls();
 
     if (view)
-    	{
+    {
 	obj.x_rot=MAX(2700,MIN(3599,2700+mouse_y*3));
 
 	obj.y_rot=(centre_x-mouse_x)*3;
 	obj.y_rot=MAX(-900,MIN(obj.y_rot,900));
-	}
+    }
     else
-    	{
+    {
 	drop.origin.y+=drop_speed*speed;
 	speed+=0.1;
 
 	if (drop.origin.y>y_base)
-	    {
+	{
 	    int a;
 
 	    speed=1.0;
@@ -3038,7 +3204,7 @@ static void CraterDemo(void)
 	    drop.origin.y=drop_y;
 
 	    for(f=0;f<no;f++)
-		{
+	    {
 		Point3D p;
 		double d;
 		double y;
@@ -3051,34 +3217,36 @@ static void CraterDemo(void)
 		d=Distance(&ctr,&p)/gap;
 
 		if (d<1.0)
+		{
 		    d=1.0;
+		}
 
 		if (d<max_dist)
-		    {
+		{
 		    y=y_range;
 		    a=(int)(900+(d/ang_dropoff))%3600;
-	    
+
 		    pt[f].y+=y*sintab[a];
-		    }
 		}
 	    }
 	}
+    }
 
     if (view)
-	{
+    {
 	DrawObj(&obj,col);
 	Print(0,0,white,"Viewing mode (LMB to end)");
-	}
+    }
     else
-	{
+    {
 	DrawList(w,2,col,False,False);
 	DrawSubList(NULL,0,&drop,1,NULL,0,NULL,0,col,FALSE,FALSE);
-	}
+    }
 }
 
 
 /* ---------------------------------------- TRIANGLE DEMO
-*/
+ */
 static void TriangleDemo(void)
 {
     static const int gap=100;
@@ -3107,7 +3275,7 @@ static void TriangleDemo(void)
     static Point3D initp;
 
     static Obj3D obj=	
-    		{0,0,{0,0,0},NULL,NULL,NULL,NULL,0,0,0,MODE_EDGE,-1,True};
+    {0,0,{0,0,0},NULL,NULL,NULL,NULL,0,0,0,MODE_EDGE,-1,True};
 
     static Point3D ctr;
 
@@ -3120,7 +3288,7 @@ static void TriangleDemo(void)
     int f,r;
 
     if (!init)
-    	{
+    {
 	int x,z,c;
 
 	col=Grab(sizeof *col * no_col);
@@ -3130,10 +3298,12 @@ static void TriangleDemo(void)
 	initp.z=z_off+(no_z*gap)/2;
 
 	for(f=0;f<no_col;f++)
-	    {
-	    int i=255-f;
+	{
+	    int i;
+
+	    i=255-f;
 	    col[f]=GetCol(i,i,i);
-	    }
+	}
 
 	no_poly=(no_z-1)*(no_x-1)*2;
 
@@ -3147,27 +3317,31 @@ static void TriangleDemo(void)
 	max_z=z=(no_z/2)*gap;
 
 	for(f=0;f<no;f++)
-	    {
+	{
 	    int m=f%no_x;
 
 	    pt[f].x=x;
 	    pt[f].z=z;
 
 	    if (m==0 || m==no_x-1)
+	    {
 		pt[f].y=y_wall;
+	    }
 	    else
+	    {
 		pt[f].y=sintab[RND(3600)]*y_range;
+	    }
 
 	    x+=gap;
 
 	    if (((f+1)%no_x)==0)
-	    	{
+	    {
 		max_x=x;
 		x=min_x;
 		z-=gap;
 		c++;
-		}
 	    }
+	}
 
 	min_z=z;
 
@@ -3179,7 +3353,7 @@ static void TriangleDemo(void)
 	r=0;
 
 	for(f=0,r=0;f<no_poly;f+=2,r++)
-	    {
+	{
 	    poly[f].col=0;
 	    poly[f].no=3;
 
@@ -3195,11 +3369,11 @@ static void TriangleDemo(void)
 	    poly[f+1].p[2]=r+no_x;
 
 	    if (((f+2)%(no_x-1))==0)
-		{
+	    {
 		r++;
 		c++;
-		}
 	    }
+	}
 
 	obj.origin=initp;
 	obj.no_points=no;
@@ -3210,7 +3384,7 @@ static void TriangleDemo(void)
 	obj.workxp=Grab(sizeof(XPoint)*no);
 
 	init=TRUE;
-	}
+    }
 
     Cls();
     DrawObj(&obj,col);
@@ -3220,25 +3394,33 @@ static void TriangleDemo(void)
     move+=speed;
 
     while (move>=gap)
-    	{
+    {
 	for(f=no-1;f>=no_x;f--)
+	{
 	    pt[f].y=pt[f-no_x].y;
+	}
 
 	for(f=0;f<no_x;f++)
+	{
 	    if (f==0 || f==no_x-1)
+	    {
 		pt[f].y=y_wall;
+	    }
 	    else
+	    {
 		pt[f].y=sintab[RND(3600)]*y_range;
+	    }
+	}
 
 	move-=gap;
-	}
+    }
 
     obj.origin.z=initp.z-move;
 }
 
 
 /* ---------------------------------------- TRIANGLE DEMO
-*/
+ */
 static void TriangleDemo2(void)
 {
     static const int gap=100;
@@ -3267,7 +3449,7 @@ static void TriangleDemo2(void)
     static Point3D initp;
 
     static Obj3D obj=	
-    		{0,0,{0,0,0},NULL,NULL,NULL,NULL,0,0,0,MODE_EDGE,-1,True};
+	{0,0,{0,0,0},NULL,NULL,NULL,NULL,0,0,0,MODE_EDGE,-1,True};
 
     static Point3D ctr;
 
@@ -3282,7 +3464,7 @@ static void TriangleDemo2(void)
     int newa;
 
     if (!init)
-    	{
+    {
 	int x,z,c;
 
 	col=Grab(sizeof *col * no_col);
@@ -3292,10 +3474,12 @@ static void TriangleDemo2(void)
 	initp.z=z_off+(no_z*gap)/2;
 
 	for(f=0;f<no_col;f++)
-	    {
-	    int i=255-f*200;
+	{
+	    int i;
+
+	    i=255-f*200;
 	    col[f]=GetCol(i/2,i,i/2);
-	    }
+	}
 
 	no_poly=(no_z-1)*(no_x-1)*2;
 
@@ -3309,7 +3493,7 @@ static void TriangleDemo2(void)
 	max_z=z=(no_z/2)*gap;
 
 	for(f=0;f<no;f++)
-	    {
+	{
 	    int m=f%no_x;
 
 	    pt[f].x=x;
@@ -3318,12 +3502,14 @@ static void TriangleDemo2(void)
 	    pt[f].y=sintab[ang]*y_range;
 
 	    if (m==0 || m==no_x-1)
+	    {
 		pt[f].y+=y_wall;
+	    }
 
 	    x+=gap;
 
 	    if (((f+1)%no_x)==0)
-	    	{
+	    {
 		max_x=x;
 		x=min_x;
 		z-=gap;
@@ -3332,14 +3518,14 @@ static void TriangleDemo2(void)
 		newa=(ang+angi)%3600;
 
 		if (newa<ang)
-		    {
+		{
 		    angi=RND2(450,100);
-		    }
+		}
 
 		ang=newa;
 
-		}
 	    }
+	}
 
 	min_z=z;
 
@@ -3352,7 +3538,7 @@ static void TriangleDemo2(void)
 	c=0;
 
 	for(f=0,r=0;f<no_poly;f+=2,r++)
-	    {
+	{
 	    poly[f].col=c;
 	    poly[f].no=3;
 
@@ -3372,10 +3558,10 @@ static void TriangleDemo2(void)
 	    c=(c+1)%no_col;
 
 	    if (((f+2)%(no_x-1))==0)
-		{
+	    {
 		r++;
-		}
 	    }
+	}
 
 	obj.origin=initp;
 	obj.no_points=no;
@@ -3386,7 +3572,7 @@ static void TriangleDemo2(void)
 	obj.workxp=Grab(sizeof(XPoint)*no);
 
 	init=TRUE;
-	}
+    }
 
     Cls();
     DrawObj(&obj,col);
@@ -3394,29 +3580,33 @@ static void TriangleDemo2(void)
     newa=(ang+angi)%3600;
 
     if (newa<ang)
-	{
+    {
 	angi=RND2(450,100);
-	}
+    }
 
     ang=newa;
 
     move+=speed;
 
     while (move>=gap)
-    	{
+    {
 	for(f=no-1;f>=no_x;f--)
+	{
 	    pt[f].y=pt[f-no_x].y;
+	}
 
 	for(f=0;f<no_x;f++)
-	    {
+	{
 	    pt[f].y=sintab[ang]*y_range;
 
 	    if (f==0 || f==no_x-1)
+	    {
 		pt[f].y+=y_wall;
 	    }
+	}
 
 	move-=gap;
-	}
+    }
 
     obj.origin.z=initp.z-move;
 }
-- 
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