* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
-#undef DEBUG
-
-extern int font_height;
-void clearBuffer();
+#ifdef DEBUG
+#include "debug.h"
+#endif
-// includes {{{
#include "config.h"
+#include "file.h"
+#include "score.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"
-// }}}
-// constants {{{
-// }}}
-// 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;
+ float x,y,dx,dy;
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;
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
*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 shipx,shipy = 240.0; // X position, 0..XSIZE
+float shipdx,shipdy; // Change in X position per tick.
float rockrate,rockspeed;
-float movementrate;
+float movementrate; // this controls the speed of everything that moves.
float yscroll;
float scrollvel;
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;
-float fadetimer = 0,faderate;
+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",
char *data_dir;
extern char *optarg;
extern int optind, opterr, optopt;
-// }}}
float dist_sq(float x1, float y1, float x2, float y2)
{
// ************************************* 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")) {
- // 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++) {
edot[i].active = 0;
}
}
-void init_space_dots() {
+
+void
+init_space_dots() {
int i,intensity;
for(i = 0; i<MAXSPACEDOTS; i++) {
float r;
}
}
-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();
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 + 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;
}
-void draw_space_dots(SDL_Surface *s) {
+void
+draw_space_dots(SDL_Surface *s) {
int i;
Uint16 *rawpixel;
rawpixel = (Uint16 *) s->pixels;
}
}
-void draw_engine_dots(SDL_Surface *s) {
+void
+draw_engine_dots(SDL_Surface *s) {
int i;
Uint16 *rawpixel;
rawpixel = (Uint16 *) s->pixels;
}
}
-void create_engine_dots(int newdots) {
+void
+create_engine_dots(int newdots) {
int i;
double theta,r,dx,dy;
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++;
}
}
-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++) {
if(dotptr->active == 0) {
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->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;
}
}
}
-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
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);
+ snprintscore_line(topline, 50, score);
+ SFont_Write(s,g_font,XSIZE-250,0,topline);
SDL_LockSurface(s);
}
draw_engine_dots(s);
// Create more engine dots comin out da back
- if(!gameover)
- create_engine_dots(200);
+ if(!gameover) create_engine_dots(200);
// Create engine dots out the side we're moving from
for(m = 0; m<4; m++) {
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
+init(int fullscreen) {
int i,j;
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 {
- 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);
}
// 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));
// 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;
// Load all our lovely rocks
for(i = 0; i<NROCKS; i++) {
- char a[100];
+ char a[MAX_PATH_LEN];
- sprintf(a,load_file("sprites/rock%d.png"),i);
+ snprintf(a,MAX_PATH_LEN,add_path("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));
}
// Remove the mouse cursor
return 0;
}
-int draw() {
- int i,n;
+
+int
+draw() {
+ 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 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);
// 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 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);
- }
-
}
}
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) {
// 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;
+ offset = surf_screen->pitch/2 * (p->y + (int)shipy) + p->x + (int)shipx;
if(raw_pixels[offset]) {
// Set the bang flag
bang = 1;
return bang;
}
-int gameloop() {
+
+int
+gameloop() {
int i = 0;
Uint8 *keystate;
// Create a new ship and start all over again
state = GAMEPLAY;
play_tune(1);
- xship = 10;
- yship = YSIZE/2;
- xvel = 3;
- yvel = 0;
- for(i = 0; i<MAXROCKS; i++ ) {
- if(dist_sq(xship, yship, rock[i].x, rock[i].y) < START_RAD_SQ) {
- rock[i].active = 0;
- }
- }
- 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 = BLAST_RADIUS * state_timeout / 20.0;
+ if(shipx < 60) shipx = 60;
+ for(i = 0; i<MAXROCKS; i++ ) {
+ float dx, dy, n;
+ if(rock[i].x <= 0) continue;
+ dx = rock[i].x - shipx;
+ dy = rock[i].y - shipy;
+ n = sqrt(dx*dx + dy*dy);
+ if(n < blast_radius) {
+ n *= 20;
+ rock[i].dx += rockrate*(dx+30)/n;
+ rock[i].dy += rockrate*dy/n;
+ rock[i].dead = 1;
+ }
+ }
}
}
}
if(!rockptr->active) {
rockptr->x = (float)XSIZE;
- rockptr->xvel = -(rockspeed)*(1 + rnd());
- rockptr->yvel = rnd()-0.5;
+ rockptr->dx = -(rockspeed)*(1 + rnd());
+ rockptr->dy = 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);
// 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)movementrate);
+ shipdy *= pow((double)0.9,(double)movementrate);
+ // if(abs(shipdx)<0.00001) shipdx = 0;
+ // if(abs(shipdy)<0.00001) shipdy = 0;
}
// INERTIA
- xship += xvel*movementrate;
- yship += yvel*movementrate;
+ shipx += shipdx*movementrate;
+ shipy += shipdy*movementrate;
// SCROLLING
- yscroll = yship - (YSIZE / 2);
- yscroll += yvel * 25;
+ yscroll = shipy - (YSIZE / 2);
+ yscroll += shipdy * 25;
yscroll /= -25;
yscroll = ((scrollvel * (12 - movementrate)) + (yscroll * movementrate)) / 12;
scrollvel = yscroll;
yscroll = yscroll*movementrate;
- yship += yscroll;
+ shipy += 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;
+ for(i = 0; i < MAXROCKS; i++) {
+ if(rock[i].active) {
+ rock[i].x += rock[i].dx*movementrate;
+ rock[i].y += rock[i].dy*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].dy*movementrate + yscroll) * 1.01;
+ }
+ }
+ if(rock[i].x < -rock[i].image->w || rock[i].x > XSIZE) {
+ rock[i].active = 0;
+ rock[i].dead = 0;
+ }
+ }
}
// 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*movementrate;
+ 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);
+ // Play the explosion sound
+ play_sound(0);
+ makebangdots(shipx,shipy,shipdx,shipdy,surf_ship,30);
if(--nships <= 0) {
gameover = 1;
state = GAME_OVER;
}
else {
state = DEAD_PAUSE;
- state_timeout = 50.0;
-
+ state_timeout = 20.0;
+ shipdx = 0;
+ shipdy = 0;
}
}
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;
+ rock[i].dead = 0;
}
rockrate = 54.0;
state = GAMEPLAY;
play_tune(1);
- xvel = -1;
gameover = 0;
- yvel = 0;
- xship = 0;
- yship = YSIZE/2;
-
+ shipx = 0;
+ shipy = YSIZE/2;
+ shipdx = -1;
+ shipdy = 0;
}
maneuver = 0;
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*movementrate; maneuver |= 1<<3;}
+ if(keystate[SDLK_DOWN] | keystate[SDLK_t]) { shipdy += 1.5*movementrate; maneuver |= 1<<1;}
+ if(keystate[SDLK_LEFT] | keystate[SDLK_h]) { shipdx -= 1.5*movementrate; maneuver |= 1<<2;}
+ if(keystate[SDLK_RIGHT] | keystate[SDLK_n]) { shipdx += 1.5*movementrate; maneuver |= 1;}
if(keystate[SDLK_3]) { SDL_SaveBMP(surf_screen, "snapshot.bmp"); }
}
}
}
}
+
+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