X-Git-Url: https://jasonwoof.com/gitweb/?p=vor.git;a=blobdiff_plain;f=main.c;h=bd0c158f37d6c1c4126715f148ecffd3f286e555;hp=f7e5bd4ace922525a43a73690dc2aceff78bf671;hb=9f0bc6ef9620912ca42eca9c3f4b6ca10dba35ce;hpb=a133ed10c10a4cf62f80222a89f83b6218b37d2f

diff --git a/main.c b/main.c
index f7e5bd4..bd0c158 100644
--- a/main.c
+++ b/main.c
@@ -19,103 +19,31 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  */
 
-#undef DEBUG
+#ifdef DEBUG
+#include "debug.h"
+#endif
 
-extern int font_height;
-void clearBuffer();
+#include "config.h"
+#include "file.h"
+#include "globals.h"
+#include "rocks.h"
+#include "score.h"
+#include "shape.h"
+#include "sound.h"
 
-// includes {{{
+#include <math.h>
 #include <SDL/SDL.h>
 #include <SDL/SDL_image.h>
+#include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include <math.h>
-#include <stdarg.h>
-
-#include <sys/types.h>
-#include <sys/stat.h>
 #include <unistd.h>
 
 #include "SFont.h"
-// }}}
-// constants {{{
-#define XSIZE 640
-#define YSIZE 480
-#define NROCKS 6	// Number of rock image files, not number of rocks visible
-#define MAXROCKS 120 // MAX Rocks
-#define MAXROCKHEIGHT 100
-#define ROCKRATE 2
-#define MAXBLACKPOINTS 500
-#define MAXENGINEDOTS 5000
-#define MAXBANGDOTS 50000
-#define MAXSPACEDOTS 2000
-#define W 100
-#define M 255
-#define BIG_FONT_FILE "fonts/score.png"
-// }}}
-// macros {{{
-#define CONDERROR(a) if((a)) {initerror = strdup(SDL_GetError());return 1;}
-#define NULLERROR(a) CONDERROR((a) == NULL)
-// }}}
-
-// ************************************* STRUCTS
-struct rock_struct {
-	// Array of black pixel coordinates. This is scanned 
-	// every frame to see if it's still black, and as
-	// soon as it isn't we BLOW UP
-	float x,y,xvel,yvel;
-	int active;
-	SDL_Surface *image;
-	int type_number;
-	float heat;
-}; 
-struct black_point_struct {
-	int x,y;
-};
-struct bangdots {
-	// Bang dots have the same colour as shield dots.
-	// Bang dots get darker as they age.
-	// Some are coloured the same as the ex-ship.
-	float x,y,dx,dy;
-	Uint16 c; // when zero, use heatcolor[bangdotlife]
-	float life;	// When reduced to 0, set active = 0
-	int active;
-	float decay;// Amount by which to reduce life each time dot is drawn
-};
-struct enginedots {
-	// Engine dots stream out the back of the ship, getting darker as they go.
-	int active;
-	float x,y,dx,dy;
-	// The life of an engine dot 
-	// is a number starting at between 0 and 50 and counting backward.
-	float life;	// When reduced to 0, set active = 0
-};
-struct spacedot {
-	// Space dots are harmless background items
-	// All are active. When one falls off the edge, another is created at the start.
-	float x,y,dx;
-	Uint16 color;
-};
-// High score table {{{
-struct highscore {
-	int score;
-	char *name;
-	int allocated;
-} high[] = {
-	{13000,"Pad",0},
-	{12500,"Pad",0},
-	{6500,"Pad",0},
-	{5000,"Pad",0},
-	{3000,"Pad",0},
-	{2500,"Pad",0},
-	{2000,"Pad",0},
-	{1500,"Pad",0}
-};
-// }}}
 
 // ************************************* VARS
-// SDL_Surface global variables {{{
+// SDL_Surface global variables
 SDL_Surface 
 	*surf_screen,	// Screen
 	*surf_b_variations, // "variations" banner
@@ -126,61 +54,50 @@ SDL_Surface
 	*surf_ship,		// Spaceship element
 	*surf_life,	// Indicator of number of ships remaining
 	*surf_rock[NROCKS],	// THE ROCKS
-	*surf_deadrock[NROCKS],	// THE DEAD ROCKS
 	*surf_font_big;	// The big font
-// }}}
-// Structure global variables {{{
+
+SFont_Font *g_font;
+
+// Structure global variables
 struct enginedots edot[MAXENGINEDOTS], *dotptr = edot;
-struct rock_struct rock[MAXROCKS], *rockptr = rock;
-struct black_point_struct black_point[MAXBLACKPOINTS], *blackptr = black_point;
 struct bangdots bdot[MAXBANGDOTS], *bdotptr = bdot;
 struct spacedot sdot[MAXSPACEDOTS];
-// }}}
-// Other global variables {{{
+
+// Other global variables
 char topline[1024];
 char *initerror = "";
-char name[1024], debug1[1024];
 
-float xship,yship = 240.0;	// X position, 0..XSIZE
-float xvel,yvel;	// Change in X position per tick.
-float rockrate,rockspeed;
-float movementrate;
-float shieldlevel, shieldpulse = 0;
-float yscroll;
+struct shape shipshape;
+float shipx,shipy = 240.0;	// X position, 0..XSIZE
+float shipdx,shipdy;	// Change in X position per tick.
+float screendx = 7.5, screendy = 0.0;
+float xscroll, yscroll;
+float gamerate;  // this controls the speed of everything that moves.
 
 int nships,score,initticks,ticks_since_last, last_ticks;
-int initialshield, gameover, fast;
-int countdown = 0;
+int gameover;
 int maneuver = 0;
-int laser = 0;
-int shieldsup = 0;
-int oss_sound_flag = 0;
-int tail_plume = 0; // display big engine at the back?
-int friction = 0;	// should there be friction?
-int scorerank;
-float fadetimer = 0,faderate;
+int sound_flag, music_flag;
+int tail_plume; // display big engine at the back?
+int friction;	// should there be friction?
+float fadetimer = 0, faderate;
 
-int pausedown = 0,paused = 0;
+int pausedown = 0, paused = 0;
 
 // bangdot start (bd1) and end (bd2) position:
 int bd1 = 0, bd2 = 0;
 
-int xoffset[NROCKS][MAXROCKHEIGHT];
-
 enum states {
 	TITLE_PAGE,
 	GAMEPLAY,
 	DEAD_PAUSE,
 	GAME_OVER,
 	HIGH_SCORE_ENTRY,
-	HIGH_SCORE_DISPLAY,
-	DEMO
+	HIGH_SCORE_DISPLAY
 };
 enum states state = TITLE_PAGE;
 float state_timeout = 600.0;
 
-const int fakesin[] = {0,1,0,-1};
-const int fakecos[] = {1,0,-1,0};
 #define NSEQUENCE 2
 char *sequence[] = {
 	"Press SPACE to start",
@@ -193,111 +110,26 @@ Uint16 heatcolor[W*3];
 char *data_dir;
 extern char *optarg;
 extern int optind, opterr, optopt;
-// }}}
 
 // ************************************* FUNCS
-#ifdef DOTCOLLISION
-int dotcollision(SDL_Surface *s) {
-	int i,j,m;
-	Uint16 *rawpixel, *r;
-
-	/*
-	 * Kill all the dots which collide with other objects.
-	 * This does not work, it's probably in the wrong place or something.
-	 */
-	SDL_LockSurface(s);
-	rawpixel = (Uint16 *) s->pixels;
-	if(bangdotlife > 0 && bangdotlife<80) {
-		for(i = 0; i<nbangdots; i ++ ) {
-			if(bdot[i].x>0 && bdot[i].x<XSIZE && bdot[i].y>0 && bdot[i].y<YSIZE) {
-				r = &rawpixel[(int)(s->pitch/2*(int)(bdot[i].y)) + (int)(bdot[i].x)];
-			if(*r != (bdot[i].c ? bdot[i].c : heatcolor[bangdotlife*2]))
-				bdot[i].active = 0;
-			}
-		}
-	}
-	SDL_UnlockSurface(s);
-
-	return;
-}
-#endif
 
-FILE *hs_fopen(char *mode) {
-	FILE *f;
-	mode_t mask;
-	mask = umask(0111);
-	if(f = fopen("/usr/share/vor/.highscore",mode)) {
-		umask(mask);
-		return f;
-	}
-	else {
-		char s[1024];
-		umask(0177);
-		sprintf(s,"%s/.vor-high",getenv("HOME"));
-		if(f = fopen(s,mode)) {
-			umask(mask);
-			return f;
-		}
-		else {
-			umask(mask);
-			return 0;
-		}
-	}
-}
-void read_high_score_table() {
-	FILE *f;
-	int i;
-	if(f = hs_fopen("r")) {
-		// If the file exists, read from it
-		for(i = 0; i<8; i ++ ) {
-			char s[1024];
-			int highscore;
-			if(fscanf (f, "%d %[^\n]", &highscore, s)!= 2) {
-				break;
-			}
-			if(high[i].allocated) {
-				free(high[i].name);
-			}
-			high[i].name = strdup(s);
-			high[i].score = highscore;
-			high[i].allocated = 1;
-		}
-		fclose(f);
-	}
-}
-void write_high_score_table() {
-	FILE *f;
-	int i;
-	if(f = hs_fopen("w")) {
-		// If the file exists, write to it
-		for(i = 0; i<8; i ++ ) {
-			fprintf (f, "%d %s\n", high[i].score, high[i].name);
-		}
-		fclose(f);
-	}
-}
-void snprintscore(char *s, size_t n, int score) {
-	int min = score/60000;
-	int sec = score/1000%60;
-	int tenths = score%1000/100;
-	if(min) {
-		snprintf(s, n, "%2d:%.2d.%d", min, sec, tenths);
-	} else {
-		snprintf(s, n, "  %2d.%d", sec, tenths);
-	}
-}
-float rnd() {
+float
+rnd() {
 	return (float)random()/(float)RAND_MAX;
 }
-void init_engine_dots() {
+
+void
+init_engine_dots() {
 	int i;
-	for(i = 0; i<MAXENGINEDOTS; i ++ ) {
+	for(i = 0; i<MAXENGINEDOTS; i++) {
 		edot[i].active = 0;
 	}
 }
-void init_space_dots() {
+
+void
+init_space_dots() {
 	int i,intensity;
-	for(i = 0; i<MAXSPACEDOTS; i ++ ) {
+	for(i = 0; i<MAXSPACEDOTS; i++) {
 		float r;
 
 		sdot[i].x = rnd()*(XSIZE-5);
@@ -313,51 +145,15 @@ void init_space_dots() {
 	}
 }
 
-int drawlaser() {
-	int i,xc,hitrock;
-	Uint16 c, *rawpixel;
-
-	hitrock = -1;
-	xc = XSIZE;
-	// let xc = x coordinate of the collision between the laser and a space rock
-	// 1. Calculate xc and determine the asteroid that was hit
-	for(i = 0; i<MAXROCKS; i ++ ) {
-		if(rock[i].active) {
-			if(yship + 12>rock[i].y && yship + 12<rock[i].y + rock[i].image->h && xship + 32<rock[i].x + (rock[i].image->w/2) && rock[i].x + (rock[i].image->w/2) < xc) {
-				xc = rock[i].x + (rock[i].image->w/2);
-				hitrock = i;
-			}
-		}
-	}
-
-	if(hitrock>= 0) {
-		rock[hitrock].heat += movementrate*3;
-	}
-
-	// Plot a number of random dots between xship and XSIZE
-	SDL_LockSurface(surf_screen);
-	rawpixel = (Uint16 *) surf_screen->pixels;
-	c = SDL_MapRGB(surf_ship->format,rnd()*128,128 + rnd()*120,rnd()*128);
-
-	for(i = 0; i<(xc-xship)*5; i += 10) {
-		int x,y;
-		x = rnd()*(xc-(xship + 32)) + xship + 32;
-		y = yship + 12 + (rnd()-0.5)*1.5;
-		rawpixel[surf_screen->pitch/2*y + x] = c;
-	}
-
-	SDL_UnlockSurface(surf_screen);
-}
-
-
-int makebangdots(int xbang, int ybang, int xvel, int yvel, SDL_Surface *s, int power) {
+void
+makebangdots(int xbang, int ybang, int dx, int dy, SDL_Surface *s, int power) {
 
 	// TODO - stop generating dots after a certain amount of time has passed, to cope with slower CPUs.
 	// TODO - generate and display dots in a circular buffer
 
-	int i,x,y,n,endcount;
+	int x,y,endcount;
 	Uint16 *rawpixel,c;
-	double theta,r,dx,dy;
+	double theta,r;
 	int begin_generate;
 
 	begin_generate = SDL_GetTicks();
@@ -365,51 +161,49 @@ int makebangdots(int xbang, int ybang, int xvel, int yvel, SDL_Surface *s, int p
 	SDL_LockSurface(s);
 	rawpixel = (Uint16 *) s->pixels;
 
-	//for(n = 0; n<= power/2; n ++ ) {
+	//for(n = 0; n <= power/2; n++) {
 
 	endcount = 0;
 	while (endcount<3) {
+		for(x = 0; x<s->w; x++) {
+			for(y = 0; y<s->h; y++) {
+				c = rawpixel[s->pitch/2*y + x];
+				if(c && c != s->format->colorkey) {
 
-	for(x = 0; x<s->w; x ++ ) {
-		for(y = 0; y<s->h; y ++ ) {
-			c = rawpixel[s->pitch/2*y + x];
-			if(c && c != SDL_MapRGB(s->format,0,255,0)) {
-
-				theta = rnd()*M_PI*2;
+					theta = rnd()*M_PI*2;
 
-				r = 1-(rnd()*rnd());
+					r = 1-(rnd()*rnd());
 
-				bdot[bd2].dx = (power/50.0)*45.0*cos(theta)*r + xvel;
-				bdot[bd2].dy = (power/50.0)*45.0*sin(theta)*r + yvel;
-				bdot[bd2].x = x + xbang;
-				bdot[bd2].y = y + ybang;
+					bdot[bd2].dx = (power/50.0)*45.0*cos(theta)*r + dx;
+					bdot[bd2].dy = (power/50.0)*45.0*sin(theta)*r + dy;
+					bdot[bd2].x = x + xbang;
+					bdot[bd2].y = y + ybang;
 
-				// Replace the last few bang dots with the pixels from the exploding object
-				bdot[bd2].c = (endcount>0)?c:0;
-				bdot[bd2].life = 100;
-				bdot[bd2].decay = rnd()*3 + 1;
-				bdot[bd2].active = 1;
+					// Replace the last few bang dots with the pixels from the exploding object
+					bdot[bd2].c = (endcount>0)?c:0;
+					bdot[bd2].life = 100;
+					bdot[bd2].decay = rnd()*3 + 1;
+					bdot[bd2].active = 1;
 
-				bd2 ++ ;
-				bd2 %= MAXBANGDOTS;
+					bd2++;
+					bd2 %= MAXBANGDOTS;
 
-				// If the circular buffer is filled, who cares? They've had their chance.
-				//if(bd2 == bd1-1) goto exitloop;
+					// If the circular buffer is filled, who cares? They've had their chance.
+					//if(bd2 == bd1-1) goto exitloop;
 
+				}
 			}
 		}
-	}
-
-	if(SDL_GetTicks() - begin_generate > 7) endcount ++ ;
 
+		if(SDL_GetTicks() - begin_generate > 7) endcount++;
 	}
-exitloop:
 
 	SDL_UnlockSurface(s);
 
 }
 
-void draw_bang_dots(SDL_Surface *s) {
+void
+draw_bang_dots(SDL_Surface *s) {
 	int i;
 	int first_i, last_i;
 	Uint16 *rawpixel;
@@ -417,11 +211,11 @@ void draw_bang_dots(SDL_Surface *s) {
 
 	first_i = -1;
 
-	for(i = bd1; (bd1 <= bd2)?(i<bd2):(i >= bd1 && i < bd2); last_i =  ++i) {
+	for(i = bd1; (bd1 <= bd2)?(i<bd2):(i >= bd1 && i < bd2); last_i = ++i) {
 
 		i %= MAXBANGDOTS;
 
-		if(bdot[i].x<= 0 || bdot[i].x>= XSIZE || bdot[i].y<= 0 || bdot[i].y>= YSIZE) {
+		if(bdot[i].x <= 0 || bdot[i].x >= XSIZE || bdot[i].y <= 0 || bdot[i].y >= YSIZE) {
 			// If the dot has drifted outside the perimeter, kill it
 			bdot[i].active = 0;
 		}
@@ -431,16 +225,16 @@ void draw_bang_dots(SDL_Surface *s) {
 			first_i = i;
 			//last_i = i + 1;
 			rawpixel[(int)(s->pitch/2*(int)(bdot[i].y)) + (int)(bdot[i].x)] = bdot[i].c ? bdot[i].c : heatcolor[(int)(bdot[i].life*3)];
-			bdot[i].life-= bdot[i].decay;
-			bdot[i].x += bdot[i].dx*movementrate;
-			bdot[i].y += bdot[i].dy*movementrate + yscroll;
+			bdot[i].life -= bdot[i].decay;
+			bdot[i].x += bdot[i].dx*gamerate;
+			bdot[i].y += bdot[i].dy*gamerate-yscroll;
 
 			if(bdot[i].life<0)
 			bdot[i].active = 0;
 		}
 	}
 
-	if(first_i>= 0) {
+	if(first_i >= 0) {
 		bd1 = first_i;
 		bd2 = last_i;
 	}
@@ -452,18 +246,19 @@ void draw_bang_dots(SDL_Surface *s) {
 }
 
 
-void draw_space_dots(SDL_Surface *s) {
+void
+draw_space_dots(SDL_Surface *s) {
 	int i;
 	Uint16 *rawpixel;
 	rawpixel = (Uint16 *) s->pixels;
 
-	for(i = 0; i<MAXSPACEDOTS; i ++ ) {
+	for(i = 0; i<MAXSPACEDOTS; i++) {
 		if(sdot[i].y<0) {
 			sdot[i].y = 0;
 		}
 		rawpixel[(int)(s->pitch/2*(int)sdot[i].y) + (int)(sdot[i].x)] = sdot[i].color;
-		sdot[i].x += sdot[i].dx*movementrate;
-		sdot[i].y += yscroll;
+		sdot[i].x += sdot[i].dx*gamerate;
+		sdot[i].y -= yscroll;
 		if(sdot[i].y > YSIZE) {
 			sdot[i].y -= YSIZE;
 		} else if(sdot[i].y < 0) {
@@ -475,16 +270,17 @@ void draw_space_dots(SDL_Surface *s) {
 	}
 }
 
-void draw_engine_dots(SDL_Surface *s) {
+void
+draw_engine_dots(SDL_Surface *s) {
 	int i;
 	Uint16 *rawpixel;
 	rawpixel = (Uint16 *) s->pixels;
 
-	for(i = 0; i<MAXENGINEDOTS; i ++ ) {
+	for(i = 0; i<MAXENGINEDOTS; i++) {
 		if(edot[i].active) {
-			edot[i].x += edot[i].dx*movementrate;
-			edot[i].y += edot[i].dy*movementrate + yscroll;
-			if((edot[i].life-= movementrate*3)<0 || edot[i].y<0 || edot[i].y>YSIZE) {
+			edot[i].x += edot[i].dx*gamerate;
+			edot[i].y += edot[i].dy*gamerate - yscroll;
+			if((edot[i].life -= gamerate*3)<0 || edot[i].y<0 || edot[i].y>YSIZE) {
 				edot[i].active = 0;
 			} else if(edot[i].x<0 || edot[i].x>XSIZE) {
 				edot[i].active = 0;
@@ -498,14 +294,15 @@ void draw_engine_dots(SDL_Surface *s) {
 	}
 }
 
-void create_engine_dots(int newdots) {
+void
+create_engine_dots(int newdots) {
 	int i;
 	double theta,r,dx,dy;
 
 	if(!tail_plume) return;
 
 	if(state == GAMEPLAY) {
-		for(i = 0; i<newdots*movementrate; i ++ ) {
+		for(i = 0; i<newdots*gamerate; i++) {
 			if(dotptr->active == 0) {
 				theta = rnd()*M_PI*2;
 				r = rnd();
@@ -513,14 +310,14 @@ void create_engine_dots(int newdots) {
 				dy = sin(theta)*r;
 
 				dotptr->active = 1;
-				dotptr->x = xship + surf_ship->w/2-14;
-				dotptr->y = yship + surf_ship->h/2 + (rnd()-0.5)*5-1;
-				dotptr->dx = 10*(dx-1.5) + xvel;
-				dotptr->dy = 1*dy + yvel;
+				dotptr->x = shipx + surf_ship->w/2-14;
+				dotptr->y = shipy + surf_ship->h/2 + (rnd()-0.5)*5-1;
+				dotptr->dx = 10*(dx-1.5) + shipdx;
+				dotptr->dy = 1*dy + shipdy;
 				dotptr->life = 45 + rnd(1)*5;
 
-				dotptr ++ ;
-				if(dotptr-edot>= MAXENGINEDOTS) {
+				dotptr++;
+				if(dotptr-edot >= MAXENGINEDOTS) {
 					dotptr = edot;
 				}
 			}
@@ -528,15 +325,16 @@ void create_engine_dots(int newdots) {
 	}
 }
 
-void create_engine_dots2(int newdots, int m) {
+void
+create_engine_dots2(int newdots, int m) {
 	int i;
 	double theta, theta2, dx, dy, adx, ady;
 
 	// Don't create fresh engine dots when
 	// the game is not being played and a demo is not beng shown
-	if(state!= GAMEPLAY && state!= DEMO) return;
+	if(state != GAMEPLAY) return;
 
-	for(i = 0; i<newdots; i ++ ) {
+	for(i = 0; i<newdots; i++) {
 		if(dotptr->active == 0) {
 			theta = rnd()*M_PI*2;
 			theta2 = rnd()*M_PI*2;
@@ -548,146 +346,90 @@ void create_engine_dots2(int newdots, int m) {
 
 
 			dotptr->active = 1;
-			dotptr->x = xship + surf_ship->w/2 + (rnd()-0.5)*3;
-			dotptr->y = yship + surf_ship->h/2 + (rnd()-0.5)*3;
+			dotptr->x = shipx + surf_ship->w/2 + (rnd()-0.5)*3;
+			dotptr->y = shipy + surf_ship->h/2 + (rnd()-0.5)*3;
 
 			switch(m) {
 				case 0:
-					dotptr->x-= 14;
-					dotptr->dx = -20*adx + xvel;
-					dotptr->dy = 2*dy + yvel;
+					dotptr->x -= 14;
+					dotptr->dx = -20*adx + shipdx;
+					dotptr->dy = 2*dy + shipdy;
 					dotptr->life = 60 * adx;
 				break;
 				case 1:
-					dotptr->dx = 2*dx + xvel;
-					dotptr->dy = -20*ady + yvel;
+					dotptr->dx = 2*dx + shipdx;
+					dotptr->dy = -20*ady + shipdy;
 					dotptr->life = 60 * ady;
 				break;
 				case 2:
 					dotptr->x += 14;
-					dotptr->dx = 20*adx + xvel;
-					dotptr->dy = 2*dy + yvel;
+					dotptr->dx = 20*adx + shipdx;
+					dotptr->dy = 2*dy + shipdy;
 					dotptr->life = 60 * adx;
 				break;
 				case 3:
-					dotptr->dx = 2*dx + xvel;
-					dotptr->dy = 20*ady + yvel;
+					dotptr->dx = 2*dx + shipdx;
+					dotptr->dy = 20*ady + shipdy;
 					dotptr->life = 60 * ady;
 				break;
 			}
-			dotptr ++ ;
-			if(dotptr-edot>= MAXENGINEDOTS) {
+			dotptr++;
+			if(dotptr-edot >= MAXENGINEDOTS) {
 				dotptr = edot;
 			}
 		}
 	}
 }
 
-int drawdots(SDL_Surface *s) {
-	int m, scorepos, n;
+void
+drawdots(SDL_Surface *s) {
+	int m;
 
-	SDL_LockSurface(s);
-	// Draw the background stars aka space dots
-	draw_space_dots(s);
-
-	// Draw the score when playing the game or whn the game is freshly over
-	if(1 || state == GAMEPLAY || state == DEAD_PAUSE || state == GAME_OVER ) {
-		SDL_UnlockSurface(s);
-
-		scorepos = XSIZE-250;
-		n = snprintf(topline, 50, "Time: ");
-		snprintscore(topline + n, 50-n, score);
-		PutString(s,scorepos,0,topline);
-
-		SDL_LockSurface(s);
-	}
-
-	// Draw all the engine dots
-	draw_engine_dots(s);
-
-	// Create more engine dots comin out da back
-	if(!gameover)
-	create_engine_dots(200);
+	// Create more engine dots comin' out da back
+	if(!gameover) create_engine_dots(200);
 
 	// Create engine dots out the side we're moving from
-	for(m = 0; m<4; m ++ ) {
+	for(m = 0; m<4; m++) {
 		if(maneuver & 1<<m) { // 'maneuver' is a bit field
 			create_engine_dots2(80,m);
 		}
 	}
 
-	// Draw all outstanding bang dots
-	//if(bangdotlife-- > 0) 
+	SDL_LockSurface(s);
+	draw_space_dots(s);
+	draw_engine_dots(s);
 	draw_bang_dots(s);
-
 	SDL_UnlockSurface(s);
 }
 
-char * load_file(char *s) {
-	static char retval[1024];
-	snprintf(retval, 1024, "%s/%s", data_dir, s);
-	return retval;
-}
+int
+init(int fullscreen) {
 
-
-int missing(char *dirname) {
-	struct stat buf;
-	stat(dirname, &buf);
-	return (!S_ISDIR(buf.st_mode));
-}
-
-int init(int fullscreen) {
-
-	int i,j;
+	int i;
 	SDL_Surface *temp;
-	Uint16 *raw_pixels;
 	Uint32 flag;
 
+	// Where are our data files?
+	if(!find_files()) exit(1);
 	read_high_score_table();
 
-	// Where are our data files?
-	// default: ./data
-	// second alternative: RD_DATADIR
-	// final alternative: /usr/share/vor
-	data_dir = strdup("./data");
-	if(missing(data_dir)) {
-		char *env;
-		env = getenv("RD_DATADIR");
-		if(env != NULL) {
-			data_dir = strdup(env);
-			if(missing(data_dir)) {
-				fprintf (stderr,"Cannot find data directory $RD_DATADIR\n");
-				exit(-1);
-			}
+	if(sound_flag) {
+		// Initialize SDL with audio and video
+		if(SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO) != 0) {
+			sound_flag = 0;
+			printf ("Can't open sound, starting without it\n");
+			atexit(SDL_Quit);
 		} else {
-			data_dir = strdup("/usr/share/vor");
-			if(missing(data_dir)) {
-				fprintf (stderr,"Cannot find data in %s\n", data_dir);
-				exit(-2);
-			}
+			atexit(SDL_Quit);
+			atexit(SDL_CloseAudio);
+			sound_flag = init_sound();
 		}
-	}
-
-	if(oss_sound_flag) {
-
-	// Initialise SDL with audio and video
-	if(SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO)!= 0) {
-		oss_sound_flag = 0;
-		printf ("Can't open sound, starting without it\n");
-		atexit(SDL_Quit);
 	} else {
+		// Initialize with video only
+		CONDERROR(SDL_Init(SDL_INIT_VIDEO) != 0);
 		atexit(SDL_Quit);
-		atexit(SDL_CloseAudio);
-		oss_sound_flag = init_sound();
 	}
 
-	} else {
-		// Initialise with video only
-		CONDERROR(SDL_Init(SDL_INIT_VIDEO)!= 0);
-		atexit(SDL_Quit);
-	}
-
-	if(oss_sound_flag)
 	play_tune(0);
 
 	// Attempt to get the required video size
@@ -696,12 +438,12 @@ int init(int fullscreen) {
 	surf_screen = SDL_SetVideoMode(XSIZE,YSIZE,16,flag);
 
 	// Set the title bar text
-	SDL_WM_SetCaption("Rock Dodgers", "rockdodgers");
+	SDL_WM_SetCaption("Variations on Rockdodger", "VoR");
 
 	NULLERROR(surf_screen);
 
 	// Set the heat color from the range 0 (cold) to 300 (blue-white)
-	for(i = 0; i<W*3; i ++ ) {
+	for(i = 0; i<W*3; i++) {
 		heatcolor[i] = SDL_MapRGB(
 			surf_screen->format,
 			(i<W)?(i*M/W):(M),(i<W)?0:(i<2*W)?((i-W)*M/W):M,(i<2*W)?0:((i-W)*M/W) // Got that?
@@ -709,62 +451,37 @@ int init(int fullscreen) {
 	}
 
 	// Load the banners
-	NULLERROR(temp = IMG_Load(load_file("banners/variations.png")));
+	NULLERROR(temp = IMG_Load(add_path("banners/variations.png")));
 	NULLERROR(surf_b_variations = SDL_DisplayFormat(temp));
 
-	NULLERROR(temp = IMG_Load(load_file("banners/on.png")));
+	NULLERROR(temp = IMG_Load(add_path("banners/on.png")));
 	NULLERROR(surf_b_on = SDL_DisplayFormat(temp));
 
-	NULLERROR(temp = IMG_Load(load_file("banners/rockdodger.png")));
+	NULLERROR(temp = IMG_Load(add_path("banners/rockdodger.png")));
 	NULLERROR(surf_b_rockdodger = SDL_DisplayFormat(temp));
 
-	NULLERROR(temp = IMG_Load(load_file("banners/game.png")));
+	NULLERROR(temp = IMG_Load(add_path("banners/game.png")));
 	NULLERROR(surf_b_game = SDL_DisplayFormat(temp));
 
-	NULLERROR(temp = IMG_Load(load_file("banners/over.png")));
+	NULLERROR(temp = IMG_Load(add_path("banners/over.png")));
 	NULLERROR(surf_b_over = SDL_DisplayFormat(temp));
 
-	surf_font_big = IMG_Load(load_file(BIG_FONT_FILE));
-	InitFont(surf_font_big);
+	surf_font_big = IMG_Load(add_path(BIG_FONT_FILE));
+	g_font = SFont_InitFont(surf_font_big);
 
 	// Load the spaceship graphic.
-	NULLERROR(temp = IMG_Load(load_file("sprites/ship.png")));
+	NULLERROR(temp = IMG_Load(add_path("sprites/ship.png")));
 	NULLERROR(surf_ship = SDL_DisplayFormat(temp));
+	get_shape(surf_ship, &shipshape);
 
 	// Load the life indicator (small ship) graphic.
-	NULLERROR(temp = IMG_Load(load_file("indicators/life.png")));
+	NULLERROR(temp = IMG_Load(add_path("indicators/life.png")));
 	NULLERROR(surf_life = SDL_DisplayFormat(temp));
 
-	// Create the array of black points;
-	SDL_LockSurface(surf_ship);
-	raw_pixels = (Uint16 *) surf_ship->pixels;
-	for(i = 0; i<surf_ship->w; i ++ ) {
-		for(j = 0; j<surf_ship->h; j ++ ) {
-			if(raw_pixels[j*(surf_ship->pitch)/2 + i] == 0) {
-				blackptr->x = i;
-				blackptr->y = j;
-				blackptr ++ ;
-			}
-		}
-	}
-
-	SDL_UnlockSurface(surf_ship);
-
 	init_engine_dots();
 	init_space_dots();
 
-	// Load all our lovely rocks
-	for(i = 0; i<NROCKS; i ++ ) {
-		char a[100];
-
-		sprintf(a,load_file("sprites/rock%d.png"),i);
-		NULLERROR(temp = IMG_Load(a));
-		NULLERROR(surf_rock[i] = SDL_DisplayFormat(temp));
-
-		sprintf(a,load_file("sprites/deadrock%d.png"),i);
-		NULLERROR(temp = IMG_Load(a));
-		NULLERROR(surf_deadrock[i] = SDL_DisplayFormat(temp));
-	}
+	init_rocks();
 
 	// Remove the mouse cursor
 #ifdef SDL_DISABLE
@@ -773,17 +490,15 @@ int init(int fullscreen) {
 
 	return 0;
 }
-int draw() {
-	int i,n;
+
+int
+draw() {
+	int i;
 	SDL_Rect src,dest;
-	struct black_point_struct *p;
-	Uint16 *raw_pixels;
-	int bang, offset, x;
+	int bang, x;
 	char *text;
 	float fadegame,fadeover;
 
-	char *statedisplay, buf[1024];
-	
 	bang = 0;
 
 	src.x = 0;
@@ -794,96 +509,38 @@ int draw() {
 	// Draw a fully black background
 	SDL_FillRect(surf_screen,NULL,0);
 
-
-#ifdef DEBUG
-	// DEBUG {{{
-	// Show the current state
-	switch (state) {
-		case TITLE_PAGE:
-			statedisplay = "title_page";
-		break;
-		case GAMEPLAY:
-			statedisplay = "gameplay";
-		break;
-		case DEAD_PAUSE:
-			statedisplay = "dead_pause";
-		break;
-		case GAME_OVER:
-			statedisplay = "game_over";
-		break;
-		case HIGH_SCORE_ENTRY:
-			statedisplay = "high_score_entry";
-		break;
-		case HIGH_SCORE_DISPLAY:
-			statedisplay = "high_score_display";
-		break;
-		case DEMO:
-			statedisplay = "demo";
-		break;
-	}
-	snprintf(buf,1024, "mode = %s", statedisplay);
-	PutString(surf_screen,0,YSIZE-50,buf);
-	// }}}
-#endif
-	
 	// Draw the background dots
 	drawdots(surf_screen);
 
-	// If it's firing, draw the laser
-	if(laser) {
-		drawlaser();
-	}
-
 	// Draw ship
-	if(!gameover && (state == GAMEPLAY || state == DEMO) ) {
+	if(!gameover && state == GAMEPLAY ) {
 		src.w = surf_ship->w;
 		src.h = surf_ship->h;
 		dest.w = src.w;
 		dest.h = src.h;
-		dest.x = (int)xship;
-		dest.y = (int)yship;
+		dest.x = (int)shipx;
+		dest.y = (int)shipy;
 		SDL_BlitSurface(surf_ship,&src,surf_screen,&dest);
 	}
 
-	// Draw all the rocks, in all states
-	for(i = 0; i<MAXROCKS; i ++ ) {
-		if(rock[i].active) {
+	draw_rocks();
 
-			src.w = rock[i].image->w;
-			src.h = rock[i].image->h;
-			dest.w = src.w;
-			dest.h = src.h;
-			dest.x = (int) rock[i].x;
-			dest.y = (int) rock[i].y;
-
-			// Draw the rock
-			SDL_BlitSurface(rock[i].image,&src,surf_screen,&dest);
-
-			// Draw the heated part of the rock, in an alpha which reflects the
-			// amount of heat in the rock.
-			if(rock[i].heat>0) {
-				SDL_Surface *deadrock;
-				deadrock = surf_deadrock[rock[i].type_number];
-				SDL_SetAlpha(deadrock,SDL_SRCALPHA,rock[i].heat*255/rock[i].image->h);
-				dest.x = (int) rock[i].x;  // kludge
-				SDL_BlitSurface(deadrock,&src,surf_screen,&dest);
-				if(rnd()<0.3) {
-					rock[i].heat-= movementrate;
-				}
-			}
-
-			// If the rock is heated past a certain point, the water content of
-			// the rock flashes to steam, releasing enough energy to destroy
-			// the rock in spectacular fashion.
-			if(rock[i].heat>rock[i].image->h) {
-				rock[i].active = 0;
-				play_sound(1 + (int)(rnd()*3));
-				makebangdots(rock[i].x,rock[i].y,rock[i].xvel,rock[i].yvel,rock[i].image,10);
-			}
-
-		}
+	// Draw the life indicators.
+	if(state == GAMEPLAY || state == DEAD_PAUSE || state == GAME_OVER)
+	for(i = 0; i<nships-1; i++) {
+		src.w = surf_life->w;
+		src.h = surf_life->h;
+		dest.w = src.w;
+		dest.h = src.h;
+		dest.x = (i + 1)*(src.w + 10);
+		dest.y = 20;
+		SDL_BlitSurface(surf_life, &src, surf_screen, &dest);
 	}
 
+	// Draw the score
+	snprintscore_line(topline, 50, score);
+	SFont_Write(surf_screen, g_font, XSIZE-250, 0, topline);
+
 	// If it's game over, show the game over graphic in the dead centre
 	switch (state) {
 		case GAME_OVER:
@@ -907,7 +564,7 @@ int draw() {
 			dest.h = src.h;
 			dest.x = (XSIZE-src.w)/2;
 			dest.y = (YSIZE-src.h)/2-40;
-			SDL_SetAlpha(surf_b_game, SDL_SRCALPHA, (int)(fadegame*(200 + 55*cos(fadetimer += movementrate/1.0))));
+			SDL_SetAlpha(surf_b_game, SDL_SRCALPHA, (int)(fadegame*(200 + 55*cos(fadetimer += gamerate/1.0))));
 			SDL_BlitSurface(surf_b_game,&src,surf_screen,&dest);
 
 			src.w = surf_b_over->w;
@@ -928,7 +585,7 @@ int draw() {
 			dest.h = src.h;
 			dest.x = (XSIZE-src.w)/2 + cos(fadetimer/6.5)*10;
 			dest.y = (YSIZE/2-src.h)/2 + sin(fadetimer/5.0)*10;
-			SDL_SetAlpha(surf_b_variations, SDL_SRCALPHA, (int)(200 + 55*sin(fadetimer += movementrate/2.0)));
+			SDL_SetAlpha(surf_b_variations, SDL_SRCALPHA, (int)(200 + 55*sin(fadetimer += gamerate/2.0)));
 			SDL_BlitSurface(surf_b_variations,&src,surf_screen,&dest);
 
 			src.w = surf_b_on->w;
@@ -950,136 +607,50 @@ int draw() {
 			SDL_BlitSurface(surf_b_rockdodger,&src,surf_screen,&dest);
 
 			text = "Version " VERSION;
-			x = (XSIZE-SFont_wide(text))/2 + sin(fadetimer/4.5)*10;
-			PutString(surf_screen,x,YSIZE-50 + sin(fadetimer/2)*5,text);
+			x = (XSIZE-SFont_TextWidth(g_font,text))/2 + sin(fadetimer/4.5)*10;
+			SFont_Write(surf_screen,g_font,x,YSIZE-50 + sin(fadetimer/2)*5,text);
 
 			text = sequence[(int)(fadetimer/40)%NSEQUENCE];
 			//text = "Press SPACE to start!";
-			x = (XSIZE-SFont_wide(text))/2 + cos(fadetimer/4.5)*10;
-			PutString(surf_screen,x,YSIZE-100 + cos(fadetimer/3)*5,text);
+			x = (XSIZE-SFont_TextWidth(g_font,text))/2 + cos(fadetimer/4.5)*10;
+			SFont_Write(surf_screen,g_font,x,YSIZE-100 + cos(fadetimer/3)*5,text);
 		break;
 
 		case HIGH_SCORE_ENTRY:
+			play_tune(2);
+			if(!process_score_input()) {  // done inputting name
 
-			if(score >= high[7].score) {
-				play_tune(2);
-				if(SFont_Input (surf_screen, 330, 50 + (scorerank + 2)*font_height, 300, name)) {
-					// Insert name into high score table
-
-					// Lose the lowest name forever (loser!)
-					//if(high[7].allocated)
-					//	free(high[7].name);			// THIS WAS CRASHING SO I REMOVED IT
-
-					// Insert new high score
-					high[scorerank].score = score;
-					high[scorerank].name = strdup(name);	// MEMORY NEVER FREED!
-					high[scorerank].allocated = 1;
-			
-					// Set the global name string to "", ready for the next winner
-					name[0] = 0;
-			
-					// Change state to briefly show high scores page
-					state = HIGH_SCORE_DISPLAY;
-					state_timeout = 200;
-
-					// Write the high score table to the file
-					write_high_score_table();
-			
-					// Play the title page tune
-					play_tune(0);
-				}
-			} else {
+				// Change state to briefly show high scores page
 				state = HIGH_SCORE_DISPLAY;
-				state_timeout = 400;
-			}
-		// FALL THROUGH
+				state_timeout = 200;
 
+				// Write the high score table to the file
+				write_high_score_table();
+		
+				// Play the title page tune
+				play_tune(0);
+			}
+		// FALL THROUGH TO
 		case HIGH_SCORE_DISPLAY:
 			// Display de list o high scores mon.
-			PutString(surf_screen,180,50,"High scores");
-			for(i = 0; i<8; i ++ ) {
-				char s[1024];
-				sprintf(s, "#%1d",i + 1);
-				PutString(surf_screen, 150, 50 + (i + 2)*font_height,s);
-				snprintscore(s, 1024, high[i].score);
-				PutString(surf_screen, 200, 50 + (i + 2)*font_height,s);
-				sprintf(s, "%3s", high[i].name);
-				PutString(surf_screen, 330, 50 + (i + 2)*font_height,s);
-			}
-
+			display_scores(surf_screen, 150,50);
+			break;
+		case GAMEPLAY:
+		case DEAD_PAUSE:
+			; // no action necessary
 	}
 
 	if(!gameover && state == GAMEPLAY) {
-		// Show the freaky shields
-		SDL_LockSurface(surf_screen);
-		raw_pixels = (Uint16 *) surf_screen->pixels;
-		if(initialshield>0 || shieldsup && shieldlevel>0) {
-			int x,y,l;
-			Uint16 c;
-
-			if(initialshield>0) {
-				initialshield-= movementrate;
-				c = SDL_MapRGB(surf_screen->format,0,255,255);
-			} else {
-				c = heatcolor[(int)shieldlevel];
-				shieldlevel-= movementrate;
-			}
-
-			shieldpulse += 0.2;
-			for(p = black_point; p<blackptr; p ++ ) { 
-				x = p->x + (int)xship + (rnd() + rnd()-1)*sin(shieldpulse)*4 + 1;
-				y = p->y + (int)yship + (rnd() + rnd()-1)*sin(shieldpulse)*4 + 1;
-				if(x>0 && y>0 && x<XSIZE && y<YSIZE) {
-					offset = surf_screen->pitch/2 * y + x;
-					raw_pixels[offset] = c;
-				}
-			}
-		} else {
-			// When the shields are off, check that the black points 
-			// on the ship are still black, and not covered up by rocks
-			for(p = black_point; p<blackptr; p ++ ) { 
-				offset = surf_screen->pitch/2 * (p->y + (int)yship) + p->x + (int)xship;
-				if(raw_pixels[offset]) {
-					// Set the bang flag
-					bang = 1;
-				}
-			}
-		}
-		SDL_UnlockSurface(surf_screen);
+		bang = hit_rocks(shipx, shipy, &shipshape);
 	}
 
-#ifdef DOTCOLLISION
-	dotcollision(surf_screen); // Kill dots that are not on their spots
-#endif
-
-	// Draw all the little ships
-	if(state == GAMEPLAY || state == DEAD_PAUSE || state == GAME_OVER)
-	for(i = 0; i<nships-1; i ++ ) {
-		src.w = surf_life->w;
-		src.h = surf_life->h;
-		dest.w = src.w;
-		dest.h = src.h;
-		dest.x = (i + 1)*(src.w + 10);
-		dest.y = 20;
-		SDL_BlitSurface(surf_life,&src,surf_screen,&dest);
-	}
-
-
-	// Update the score
-	/*
-	n = SDL_GetTicks()-initticks;
-	if(score)
-	ticks_since_last = n-score;
-	score = n;
-	*/
-
 	ticks_since_last = SDL_GetTicks()-last_ticks;
 	last_ticks = SDL_GetTicks();
 	if(ticks_since_last>200 || ticks_since_last<0) {
-		movementrate = 0;
+		gamerate = 0;
 	}
 	else {
-		movementrate = ticks_since_last/50.0;
+		gamerate = GAMESPEED*ticks_since_last/50.0;
 		if(state == GAMEPLAY) {
 			score += ticks_since_last;
 		}
@@ -1091,179 +662,136 @@ int draw() {
 
 	return bang;
 }
-int gameloop() {
-	int i = 0;
+
+int
+gameloop() {
 	Uint8 *keystate;
+	float tmp;
 
 
 	for(;;) {
 		if(!paused) {
 			// Count down the game loop timer, and change state when it gets to zero or less;
 
-			if((state_timeout -= movementrate*3) < 0) {
+			if((state_timeout -= gamerate*3) < 0) {
 				switch(state) {
 					case DEAD_PAUSE:
 						// Create a new ship and start all over again
 						state = GAMEPLAY;
 						play_tune(1);
-						initialshield = 150;
-						xship = 10;
-						yship = YSIZE/2;
-						xvel = 2;
-						yvel = 0;
-						shieldlevel = 3*W;
-					break;
+						shipx -= 50;
+						break;
 					case GAME_OVER:
 						state = HIGH_SCORE_ENTRY;
-						clearBuffer();
-						name[0] = 0;
 						state_timeout = 5.0e6;
-
-						if(score>= high[7].score) {
-							// Read the high score table from the storage file
-							read_high_score_table();
-
-							// Find ranking of this score, store as scorerank
-							for(i = 0; i<8; i ++ ) {
-							if(high[i].score <= score) {
-								scorerank = i;
-								break;
-							}
-							}
-
-							// Move all lower scores down a notch
-							for(i = 7; i>= scorerank; i--)
-							high[i] = high[i-1];
-
-							// Insert blank high score
-							high[scorerank].score = score;
-							high[scorerank].name = "";
-							high[scorerank].allocated = 0;
+						if(new_high_score(score)) {
+							SDL_Event e;
+							SDL_EnableUNICODE(1);
+							while(SDL_PollEvent(&e))
+								;
+						} else {
+							state = HIGH_SCORE_DISPLAY;
+							state_timeout = 400;
 						}
-
-					break;
+						break;
 					case HIGH_SCORE_DISPLAY:
 						state = TITLE_PAGE;
 						state_timeout = 500.0;
-					break;
+						break;
 					case HIGH_SCORE_ENTRY:
 						// state = TITLE_PAGE;
 						// play_tune(1);
 						// state_timeout = 100.0;
-					break;
+						break;
 					case TITLE_PAGE:
 						state = HIGH_SCORE_DISPLAY;
 						state_timeout = 200.0;
-					break;
+						break;
+					case GAMEPLAY:
+						; // no action necessary
 				}
-			}
+			} else {
+				if(state == DEAD_PAUSE) {
+					float blast_radius;
+					int fixonly;
+
+					if(state_timeout < DEAD_PAUSE_LENGTH - 20.0) {
+						blast_radius = BLAST_RADIUS * 1.3;
+						fixonly = 1;
+					} else {
+						blast_radius = BLAST_RADIUS * (DEAD_PAUSE_LENGTH - state_timeout) / 20.0;
+						fixonly = 0;
+					}
+					blast_rocks(shipx, shipy, blast_radius, fixonly);
 
-			if(--countdown<= 0 && (rnd()*100.0<(rockrate += 0.025))) {
-				// Create a rock
-				rockptr ++ ;
-				if(rockptr-rock>= MAXROCKS) {
-					rockptr = rock;
-				}
-				if(!rockptr->active) {
-					rockptr->x = (float)XSIZE;
-					rockptr->xvel = -(rockspeed)*(1 + rnd());
-					rockptr->yvel = rnd()-0.5;
-					rockptr->type_number = random() % NROCKS;
-					rockptr->heat = 0;
-					rockptr->image = surf_rock[rockptr->type_number];// [random()%NROCKS];
-					rockptr->active = 1;
-					rockptr->y = rnd()*(YSIZE + rockptr->image->h);
-				}
-				if(movementrate>0.1) {
-					countdown = (int)(ROCKRATE/movementrate);
-				} else {
-					countdown = 0;
+					if(shipx < 60) shipx = 60;
 				}
 			}
 
+			new_rocks();
+
 			// FRICTION?
 			if(friction) {
-				xvel *= pow((double)0.9,(double)movementrate);
-				yvel *= pow((double)0.9,(double)movementrate);
-				// if(abs(xvel)<0.00001) xvel = 0;
-				// if(abs(yvel)<0.00001) yvel = 0;
+				shipdx *= pow((double)0.9,(double)gamerate);
+				shipdy *= pow((double)0.9,(double)gamerate);
 			}
 
-			// INERTIA
-			xship += xvel*movementrate;
-			yship += yvel*movementrate;
-
 			// SCROLLING
-			yscroll = yship - (YSIZE / 2);
-			yscroll /= -15;
-			yscroll = yscroll*movementrate;
-			yship += yscroll;
+			tmp = shipy - (YSIZE / 2);
+			tmp += 25 * shipdy;
+			tmp /= -25;
+			tmp = ((screendy * (gamerate - 12)) + (tmp * gamerate)) / 12;
+			screendy = -tmp;
+			xscroll = screendx * gamerate;
+			yscroll = screendy * gamerate;
+
+			// INERTIA
+			shipx += shipdx*gamerate;
+			shipy += shipdy*gamerate - yscroll;
 			
-			// Move all the rocks
-			for(i = 0; i<MAXROCKS; i ++ ) if(rock[i].active) {
-				rock[i].x += rock[i].xvel*movementrate;
-				rock[i].y += rock[i].yvel*movementrate + yscroll;
-			if(rock[i].y > YSIZE) {
-				rock[i].y -= YSIZE;
-				rock[i].y -= rock[i].image->w;
-			} else if(rock[i].y < -rock[i].image->w) {
-				rock[i].y += YSIZE;
-				rock[i].y += rock[i].image->w;
-			}
-			if(rock[i].x<-32.0)
-				rock[i].active = 0;
-			}
+			move_rocks();
 
 
 			// BOUNCE X
-			if(xship<0 || xship>XSIZE-surf_ship->w) {
+			if(shipx<0 || shipx>XSIZE-surf_ship->w) {
 				// BOUNCE from left and right wall
-				xship -= xvel*movementrate;
-				xvel *= -0.99;
+				shipx -= shipdx*gamerate;
+				shipdx *= -0.99;
 			}
 
 			// BOUNCE Y
-			if(yship<0 || yship>YSIZE-surf_ship->h) {
+			if(shipy<0 || shipy>YSIZE-surf_ship->h) {
 				// BOUNCE from top and bottom wall
-				yship -= yvel;
-				yvel *= -0.99;
+				shipy -= shipdy;
+				shipdy *= -0.99;
 			}
 
 
 			if(draw() && state == GAMEPLAY) {
-				if(oss_sound_flag) {
-					// Play the explosion sound
-					play_sound(0);
-				}
-				makebangdots(xship,yship,xvel,yvel,surf_ship,30);
-				if(--nships<= 0) {
+				// Play the explosion sound
+				play_sound(0);
+				makebangdots(shipx,shipy,shipdx,shipdy,surf_ship,30);
+				shipdx = 0;
+				shipdy = 0;
+				if(--nships <= 0) {
 					gameover = 1;
 					state = GAME_OVER;
 					state_timeout = 200.0;
 					fadetimer = 0.0;
-					faderate = movementrate;
+					faderate = gamerate;
 				}
 				else {
 					state = DEAD_PAUSE;
-					state_timeout = 100.0;
+					state_timeout = DEAD_PAUSE_LENGTH;
 				}
 			}
 
 			SDL_PumpEvents();
 			keystate = SDL_GetKeyState(NULL);
 
-			if(state!= HIGH_SCORE_ENTRY && (keystate[SDLK_q] || keystate[SDLK_ESCAPE])) {
-				return 0;
-			}
-
-			if(keystate[SDLK_SPACE] && (state == HIGH_SCORE_DISPLAY || state == TITLE_PAGE || state == DEMO)) {
+			if(keystate[SDLK_SPACE] && (state == HIGH_SCORE_DISPLAY || state == TITLE_PAGE)) {
 
-				for(i = 0; i<MAXROCKS; i++ ) {
-					rock[i].active = 0;
-				}
-
-				rockrate = 54.0;
-				rockspeed = 5.0;
+				reset_rocks();
 
 				nships = 4;
 				score = 0;
@@ -1271,18 +799,14 @@ int gameloop() {
 				state = GAMEPLAY;
 				play_tune(1);
 
-				xvel = -1;
 				gameover = 0;
-				yvel = 0;
-				xship = 0;
-				yship = YSIZE/2;
-				shieldlevel = 3*W;
-				initialshield = 0;
-
+				shipx = 0;
+				shipy = YSIZE/2;
+				shipdx = -1;
+				shipdy = 0;
 			}
 
 			maneuver = 0;
-			laser = 0;
 		} else {
 			SDL_PumpEvents();
 			keystate = SDL_GetKeyState(NULL);
@@ -1292,28 +816,16 @@ int gameloop() {
 			if(!gameover) {
 
 				if(!paused) {
-					if(keystate[SDLK_UP] | keystate[SDLK_c])		{ yvel -= 1.5*movementrate; maneuver|= 1<<3;}
-					if(keystate[SDLK_DOWN] | keystate[SDLK_t])		{ yvel += 1.5*movementrate; maneuver|= 1<<1;}
-					if(keystate[SDLK_LEFT] | keystate[SDLK_h])		{ xvel -= 1.5*movementrate; maneuver|= 1<<2;}
-					if(keystate[SDLK_RIGHT] | keystate[SDLK_n])		{ xvel += 1.5*movementrate; maneuver|= 1;}
+					if(keystate[SDLK_UP] | keystate[SDLK_c])		{ shipdy -= 1.5*gamerate; maneuver |= 1<<3;}
+					if(keystate[SDLK_DOWN] | keystate[SDLK_t])		{ shipdy += 1.5*gamerate; maneuver |= 1<<1;}
+					if(keystate[SDLK_LEFT] | keystate[SDLK_h])		{ shipdx -= 1.5*gamerate; maneuver |= 1<<2;}
+					if(keystate[SDLK_RIGHT] | keystate[SDLK_n])		{ shipdx += 1.5*gamerate; maneuver |= 1;}
 					if(keystate[SDLK_3])		{ SDL_SaveBMP(surf_screen, "snapshot.bmp"); }
 				}
 
 				if(keystate[SDLK_p] | keystate[SDLK_s]) {
 					if(!pausedown) {
 						paused = !paused;
-						if(paused) {
-							SDL_Rect src,dest;
-							src.w = surf_b_variations->w;
-							src.h = surf_b_variations->h;
-							dest.w = src.w;
-							dest.h = src.h;
-							dest.x = (XSIZE-src.w)/2;
-							dest.y = (YSIZE-src.h)/2;
-							SDL_BlitSurface(surf_b_variations,&src,surf_screen,&dest);
-							// Update the surface
-							SDL_Flip(surf_screen);
-						}
 						pausedown = 1;
 					}
 				} else {
@@ -1322,7 +834,6 @@ int gameloop() {
 
 			}
 			else {
-				shieldsup = 0;
 				paused = 0;
 				pausedown = 0;
 			}
@@ -1331,17 +842,25 @@ int gameloop() {
 				state_timeout = -1;
 			}
 		}
+
+		if(state != HIGH_SCORE_ENTRY && (keystate[SDLK_q] || keystate[SDLK_ESCAPE])) {
+			return 0;
+		}
+
 	}
 }
+
+int
 main(int argc, char **argv) {
-	int i, x, fullscreen;
+	int x, fullscreen;
 
 	fullscreen = 0;
 	tail_plume = 0;
 	friction = 0;
-	oss_sound_flag = 1;
+	sound_flag = 1;
+	music_flag = 0;
 
-	while ((x = getopt(argc,argv,"efhsp"))>= 0) {
+	while ((x = getopt(argc,argv,"efhmps")) >= 0) {
 		switch(x) {
 			case 'e': // engine
 				tail_plume = 1;
@@ -1351,18 +870,22 @@ main(int argc, char **argv) {
 			break;
 			case 'h': // help
 				printf("Variations on RockDodger\n"
-					  " -e Big tail [E]ngine\n"
-					  " -f [F]ull screen\n"
-					  " -h This [H]elp message\n"
-					  " -p Stupid original [P]hysics (friction)\n"
-					  " -s [S]ilent (no sound)\n");
+				       " -e big tail [E]ngine\n"
+				       " -f [F]ull screen\n"
+				       " -h this [H]elp message\n"
+				       " -m enable [M]usic\n"
+				       " -p original [P]hysics (friction)\n"
+				       " -s [S]ilent (no sound)\n");
 				exit(0);
 			break;
+			case 'm': // music
+				music_flag = 1;
 			case 'p': // physics
 				friction = 1;
 			break;
 			case 's': // silent
-				oss_sound_flag = 0;
+				sound_flag = 0;
+				music_flag = 0;
 			break;
 		}
 	}
@@ -1372,19 +895,9 @@ main(int argc, char **argv) {
 		return 1;
 	}
 
-	while(1) {
-		for(i = 0; i<MAXROCKS; i ++ ) {
-			rock[i].active = 0;
-		}
-		rockrate = 54.0;
-		rockspeed = 5.0;
-		initticks = SDL_GetTicks();
-		if(gameloop() == 0) {
-			break;
-		}
-		printf ("score = %d\n",score);
-		SDL_Delay(1000);
-	}
+	reset_rocks();
+	initticks = SDL_GetTicks();
+	gameloop();
 
 	return 0;
 }