// includes {{{
#include "config.h"
+#include "file.h"
+#include "sound.h"
+
+#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"
// soon as it isn't we BLOW UP
float x,y,xvel,yvel;
int active;
+ int dead; // has been blown out of the way
+ // to make room for a new ship appearing.
SDL_Surface *image;
int type_number;
- float heat;
};
struct black_point_struct {
int x,y;
int gameover;
int countdown = 0;
int maneuver = 0;
-int oss_sound_flag = 0;
+int sound_flag = 1, music_flag = 0;
int tail_plume = 0; // display big engine at the back?
int friction = 0; // should there be friction?
int scorerank;
// ************************************* FUNCS
-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")) {
+
+ f = open_score_file("r");
+ if(f) {
// If the file exists, read from it
for(i = 0; i<8; i++) {
char s[1024];
fclose(f);
}
}
+
void write_high_score_table() {
FILE *f;
int i;
- if(f = hs_fopen("w")) {
+
+ f = open_score_file("w");
+ if(f) {
// If the file exists, write to it
for(i = 0; i<8; i++) {
fprintf (f, "%d %s\n", high[i].score, high[i].name);
}
}
-int makebangdots(int xbang, int ybang, int xvel, int yvel, SDL_Surface *s, int power) {
+void makebangdots(int xbang, int ybang, int xvel, int yvel, 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();
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 != SDL_MapRGB(s->format,0,255,0)) {
- 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 + xvel;
- bdot[bd2].dy = (power/50.0)*45.0*sin(theta)*r + yvel;
- 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);
}
}
-int drawdots(SDL_Surface *s) {
+void drawdots(SDL_Surface *s) {
int m, scorepos, n;
SDL_LockSurface(s);
SDL_UnlockSurface(s);
}
-char * load_file(char *s) {
- static char retval[1024];
- snprintf(retval, 1024, "%s/%s", data_dir, s);
- return retval;
-}
-
-
-int missing(char *dirname) {
- struct stat buf;
- stat(dirname, &buf);
- return (!S_ISDIR(buf.st_mode));
-}
-
int init(int fullscreen) {
int i,j;
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 {
- atexit(SDL_Quit);
- atexit(SDL_CloseAudio);
- oss_sound_flag = init_sound();
- }
-
- } else {
- // Initialise with video only
+ // Initialize 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
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);
return 0;
}
int draw() {
- int i,n;
+ int i;
SDL_Rect src,dest;
struct black_point_struct *p;
Uint16 *raw_pixels;
char *text;
float fadegame,fadeover;
- char *statedisplay, buf[1024];
-
bang = 0;
src.x = 0;
// 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);
- }
-
}
}
return bang;
}
+
int gameloop() {
int i = 0;
Uint8 *keystate;
// Create a new ship and start all over again
state = GAMEPLAY;
play_tune(1);
- xvel = 3;
- yvel = 0;
+ xship -= 50;
break;
case GAME_OVER:
state = HIGH_SCORE_ENTRY;
}
} else {
if(state == DEAD_PAUSE) {
- float blast_radius = START_RAD * state_timeout / 50.0;
+ float blast_radius = BLAST_RADIUS * state_timeout / 20.0;
+ if(xship < 60) xship = 60;
for(i = 0; i<MAXROCKS; i++ ) {
float dx, dy, n;
+ if(rock[i].x <= 0) continue;
dx = rock[i].x - xship;
dy = rock[i].y - yship;
n = sqrt(dx*dx + dy*dy);
if(n < blast_radius) {
- rock[i].xvel += rockrate*dx/n;
+ n *= 20;
+ rock[i].xvel += rockrate*(dx+30)/n;
rock[i].yvel += rockrate*dy/n;
+ rock[i].dead = 1;
}
}
}
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);
yship += 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;
+ 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 < -rock[i].image->h) {
+ if(rock[i].dead) {
+ rock[i].dead = 0;
+ rock[i].active = 0;
+ } else {
+ // wrap
+ rock[i].y = (YSIZE - rock[i].image->h) - rock[i].y;
+ rock[i].y += (rock[i].yvel*movementrate + yscroll) * 1.01;
+ }
+ }
+ if(rock[i].x < -rock[i].image->w || rock[i].x > XSIZE) {
+ rock[i].active = 0;
+ rock[i].dead = 0;
+ }
}
- if(rock[i].x < -32.0) rock[i].active = 0;
}
if(draw() && state == GAMEPLAY) {
- if(oss_sound_flag) {
- // Play the explosion sound
- play_sound(0);
- }
+ // Play the explosion sound
+ play_sound(0);
makebangdots(xship,yship,xvel,yvel,surf_ship,30);
if(--nships <= 0) {
gameover = 1;
}
else {
state = DEAD_PAUSE;
- state_timeout = 50.0;
- xship = 10;
- yship = YSIZE/2;
+ state_timeout = 20.0;
xvel = 0;
yvel = 0;
}
for(i = 0; i<MAXROCKS; i++ ) {
rock[i].active = 0;
+ rock[i].dead = 0;
}
rockrate = 54.0;
}
}
}
+
+int
main(int argc, char **argv) {
int i, 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;
" -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;
}
}
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);
+ for(i = 0; i<MAXROCKS; i++) {
+ rock[i].active = 0;
+ rock[i].dead = 0;
}
+ rockrate = 54.0;
+ rockspeed = 5.0;
+ initticks = SDL_GetTicks();
+ gameloop();
return 0;
}
Got questions, comments, patches, etc.? Contact Jason Woofenden