* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
-#ifdef DEBUG
-#include "debug.h"
-#endif
-
-#include "config.h"
-#include "file.h"
-#include "globals.h"
-#include "rocks.h"
-#include "score.h"
-#include "shape.h"
-#include "sound.h"
-
+#include <argp.h>
#include <math.h>
#include <SDL/SDL.h>
#include <SDL/SDL_image.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
-#include <unistd.h>
#include "SFont.h"
+#include "args.h"
+#include "common.h"
+#include "config.h"
+#include "dust.h"
+#include "file.h"
+#include "globals.h"
+#include "mt.h"
+#include "rocks.h"
+#include "score.h"
+#include "shape.h"
+#include "sound.h"
+
// ************************************* VARS
// SDL_Surface global variables
SDL_Surface
*surf_life, // Indicator of number of ships remaining
*surf_rock[NROCKS], // THE ROCKS
*surf_font_big; // The big font
+
SFont_Font *g_font;
// Structure global variables
struct enginedots edot[MAXENGINEDOTS], *dotptr = edot;
struct bangdots bdot[MAXBANGDOTS], *bdotptr = bdot;
-struct spacedot sdot[MAXSPACEDOTS];
// Other global variables
char topline[1024];
char *initerror = "";
struct shape shipshape;
-float shipx = 320.0, shipy = 240.0; // X position, 0..XSIZE
-float shipdx,shipdy; // Change in X position per tick.
-float screendx = 7.5, screendy = 0.0;
+float shipx = XSIZE/2, shipy = YSIZE/2; // X position, 0..XSIZE
+float shipdx = SCREENDXMIN, shipdy = 0.0; // Change in X position per tick.
+float screendx = SCREENDXMIN, 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 gameover;
-int maneuver = 0;
-int sound_flag, music_flag;
-int tail_plume; // display big engine at the back?
-int friction; // should there be friction?
+float back_dist;
+
+// all movement is based on t_frame.
+float t_frame; // length of this frame (in ticks = 1/20th second)
+int ms_frame; // length of this frame (milliseconds)
+int ms_end; // end of this frame (milliseconds)
+
+float bangx, bangy, bangdx, bangdy;
+
+int nships,score;
+int jets = 0;
+
float fadetimer = 0, faderate;
int pausedown = 0, paused = 0;
#define NSEQUENCE 2
char *sequence[] = {
"Press SPACE to start",
- "http://qualdan.com/vor/"
+ "http://herkamire.com/jason/vor"
};
int bangdotlife, nbangdots;
extern char *optarg;
extern int optind, opterr, optopt;
-// ************************************* FUNCS
+#define TO_TICKS(seconds) ((seconds)*20*opt_gamespeed)
-float
-rnd() {
- return (float)random()/(float)RAND_MAX;
-}
+// ************************************* FUNCS
void
init_engine_dots() {
}
void
-init_space_dots() {
- int i,b;
- for(i = 0; i<MAXSPACEDOTS; i++) {
- sdot[i].x = rnd()*(XSIZE-5);
- sdot[i].y = rnd()*(YSIZE-5);
- sdot[i].z = MAXDUSTDEPTH*sqrt(rnd());
- b = (MAXDUSTDEPTH - sdot[i].z) * 255.0 / MAXDUSTDEPTH;
- sdot[i].color = SDL_MapRGB(surf_screen->format, b, b, b);
- }
-}
-
-void
-make_bang_dots(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
-
+new_bang_dots(int xbang, int ybang, int dx, int dy, SDL_Surface *s)
+{
int x,y,endcount;
- Uint16 *rawpixel,c;
+ uint16_t *pixel,c;
+ uint32_t colorkey;
+ int row_inc;
double theta,r;
int begin_generate;
begin_generate = SDL_GetTicks();
+ pixel = s->pixels;
+ row_inc = s->pitch/sizeof(uint16_t) - s->w;
+ colorkey = s->format->colorkey;
SDL_LockSurface(s);
- rawpixel = (Uint16 *) s->pixels;
-
- //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) {
-
- theta = rnd()*M_PI*2;
-
- r = 1-(rnd()*rnd());
-
- bdot[bd2].dx = (power/50.0)*45.0*cos(theta)*r + dx;
- bdot[bd2].dy = (power/50.0)*45.0*sin(theta)*r + dy;
+ pixel = s->pixels;
+ for(y=0; y<s->h; y++) {
+ for(x = 0; x<s->w; x++) {
+ c = *pixel++;
+ if(c && c != colorkey) {
+ theta = frnd()*M_PI*2;
+ r = frnd(); r = 1 - r*r;
+ // r = 1 - frnd()*frnd();
+
+ bdot[bd2].dx = 45*r*cos(theta) + dx;
+ bdot[bd2].dy = 45*r*sin(theta) + 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].c = 0;
bdot[bd2].life = 100;
- bdot[bd2].decay = rnd()*3 + 1;
+ bdot[bd2].decay = frnd()*3 + 1;
bdot[bd2].active = 1;
- bd2++;
- bd2 %= MAXBANGDOTS;
-
- // If the circular buffer is filled, who cares? They've had their chance.
- //if(bd2 == bd1-1) goto exitloop;
+ // Replace the last few bang dots with the pixels from the exploding object
+ if(endcount>0) bdot[bd2].c = c;
+ bd2 = (bd2+1) % MAXBANGDOTS;
}
+ pixel += row_inc;
}
}
-
if(SDL_GetTicks() - begin_generate > 7) endcount++;
}
SDL_UnlockSurface(s);
-
}
void
-draw_bang_dots(SDL_Surface *s) {
+draw_bang_dots(SDL_Surface *s)
+{
int i;
int first_i, last_i;
- Uint16 *rawpixel;
- rawpixel = (Uint16 *) s->pixels;
+ uint16_t *pixels, *pixel, c;
+ int row_inc = s->pitch/sizeof(uint16_t);
+ pixels = (uint16_t *) s->pixels;
first_i = -1;
+ last_i = 0;
- for(i = bd1; (bd1 <= bd2)?(i<bd2):(i >= bd1 && i < bd2); last_i = ++i) {
+ for(i=0; i<MAXBANGDOTS; i++) {
+ if(!bdot[i].active) continue;
- i %= MAXBANGDOTS;
+ // decrement life and maybe kill
+ bdot[i].life -= bdot[i].decay;
+ if(bdot[i].life<0) { bdot[i].active = 0; continue; }
- 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
+ // move and clip
+ bdot[i].x += bdot[i].dx*t_frame - xscroll;
+ bdot[i].y += bdot[i].dy*t_frame - yscroll;
+ if(bdot[i].x < 0 || bdot[i].x >= XSIZE || bdot[i].y < 0 || bdot[i].y >= YSIZE) {
bdot[i].active = 0;
+ continue;
}
- if(bdot[i].active) {
- if(first_i < 0)
- 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*gamerate - xscroll;
- bdot[i].y += bdot[i].dy*gamerate - yscroll;
-
- if(bdot[i].life<0)
- bdot[i].active = 0;
- }
- }
+ // check collisions
+ if(pixel_hit_rocks(bdot[i].x, bdot[i].y)) { bdot[i].active = 0; continue; }
- if(first_i >= 0) {
- bd1 = first_i;
- bd2 = last_i;
+ pixel = pixels + row_inc*(int)(bdot[i].y) + (int)(bdot[i].x);
+ if(bdot[i].c) c = bdot[i].c; else c = heatcolor[(int)(bdot[i].life)*3];
+ *pixel = c;
}
- else {
- bd1 = 0;
- bd2 = 0;
- }
-
}
void
-draw_space_dots(SDL_Surface *s) {
+new_engine_dots(int n, int dir) {
int i;
- Uint16 *rawpixel;
- rawpixel = (Uint16 *) s->pixels;
+ float a, r; // angle, random length
+ float dx, dy;
+ float hx, hy; // half ship width/height.
+ static const int s[4] = { 2, 1, 0, 1 };
- 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 -= xscroll / (1 + sdot[i].z);
- sdot[i].y -= yscroll / (1 + sdot[i].z);
- if(sdot[i].y >= XSIZE) sdot[i].x -= XSIZE;
- else if(sdot[i].x < 0) sdot[i].x = XSIZE-1;
- if(sdot[i].y > YSIZE) sdot[i].y -= YSIZE;
- else if(sdot[i].y < 0) sdot[i].y += YSIZE-1;
- }
-}
+ hx = surf_ship->w / 2;
+ hy = surf_ship->h / 2;
-void
-draw_engine_dots(SDL_Surface *s) {
- int i;
- Uint16 *rawpixel;
- rawpixel = (Uint16 *) s->pixels;
+ for(i = 0; i<n; i++) {
+ if(dotptr->active == 0) {
+ a = frnd()*M_PI + (dir-1)*M_PI_2;
+ r = sin(frnd()*M_PI);
+ dx = r * cos(a);
+ dy = r * -sin(a); // screen y is "backwards".
- for(i = 0; i<MAXENGINEDOTS; i++) {
- if(edot[i].active) {
- edot[i].x += edot[i].dx*gamerate - xscroll;
- 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;
+ dotptr->active = 1;
+ dotptr->x = shipx + s[dir]*hx + (frnd()-0.5)*3;
+ dotptr->y = shipy + s[(dir+1)&3]*hy + (frnd()-0.5)*3;
+ if(dir&1) {
+ dotptr->dx = shipdx + 2*dx;
+ dotptr->dy = shipdy + 20*dy;
+ dotptr->life = 60 * fabs(dy);
} else {
- int heatindex;
- heatindex = edot[i].life * 6;
- //rawpixel[(int)(s->pitch/2*(int)(edot[i].y)) + (int)(edot[i].x)] = lifecolor[(int)(edot[i].life)];
- rawpixel[(int)(s->pitch/2*(int)(edot[i].y)) + (int)(edot[i].x)] = heatindex>3*W ? heatcolor[3*W-1] : heatcolor[heatindex];
+ dotptr->dx = shipdx + 20*dx;
+ dotptr->dy = shipdy + 2*dy;
+ dotptr->life = 60 * fabs(dx);
}
- }
- }
-}
-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*gamerate; i++) {
- if(dotptr->active == 0) {
- theta = rnd()*M_PI*2;
- r = rnd();
- dx = cos(theta)*r;
- dy = sin(theta)*r;
-
- dotptr->active = 1;
- 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 = edot;
- }
- }
+ if(dotptr - edot < MAXENGINEDOTS-1) dotptr++;
+ else dotptr = edot;
}
}
}
void
-create_engine_dots2(int newdots, int m) {
+draw_engine_dots(SDL_Surface *s) {
int i;
- double theta, theta2, dx, dy, adx, ady;
+ uint16_t c;
+ uint16_t *pixels = (uint16_t *) s->pixels;
+ int row_inc = s->pitch/sizeof(uint16_t);
+ int heatindex;
- // Don't create fresh engine dots when
- // the game is not being played and a demo is not beng shown
- if(state != GAMEPLAY) return;
-
- for(i = 0; i<newdots; i++) {
- if(dotptr->active == 0) {
- theta = rnd()*M_PI*2;
- theta2 = rnd()*M_PI*2;
-
- dx = cos(theta) * fabs(cos(theta2));
- dy = sin(theta) * fabs(cos(theta2));
- adx = fabs(dx);
- ady = fabs(dy);
-
-
- dotptr->active = 1;
- 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 + shipdx;
- dotptr->dy = 2*dy + shipdy;
- dotptr->life = 60 * adx;
- break;
- case 1:
- dotptr->dx = 2*dx + shipdx;
- dotptr->dy = -20*ady + shipdy;
- dotptr->life = 60 * ady;
- break;
- case 2:
- dotptr->x += 14;
- dotptr->dx = 20*adx + shipdx;
- dotptr->dy = 2*dy + shipdy;
- dotptr->life = 60 * adx;
- break;
- case 3:
- dotptr->dx = 2*dx + shipdx;
- dotptr->dy = 20*ady + shipdy;
- dotptr->life = 60 * ady;
- break;
- }
- dotptr++;
- if(dotptr-edot >= MAXENGINEDOTS) {
- dotptr = edot;
- }
+ for(i = 0; i<MAXENGINEDOTS; i++) {
+ if(!edot[i].active) continue;
+ edot[i].x += edot[i].dx*t_frame - xscroll;
+ edot[i].y += edot[i].dy*t_frame - yscroll;
+ edot[i].life -= t_frame*3;
+ if(edot[i].life < 0
+ || edot[i].x<0 || edot[i].x >= XSIZE
+ || edot[i].y<0 || edot[i].y >= YSIZE) {
+ edot[i].active = 0;
+ continue;
}
+ if(pixel_hit_rocks(edot[i].x, edot[i].y)) { edot[i].active = 0; continue; }
+ heatindex = edot[i].life * 6;
+ c = heatindex>3*W ? heatcolor[3*W-1] : heatcolor[heatindex];
+ pixels[row_inc*(int)(edot[i].y) + (int)(edot[i].x)] = c;
}
}
drawdots(SDL_Surface *s) {
int m;
- // 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++) {
- if(maneuver & 1<<m) { // 'maneuver' is a bit field
- create_engine_dots2(80,m);
+ if(jets & 1<<m) { // 'jets' is a bit field
+ new_engine_dots(80,m);
}
}
+ move_dust();
+
SDL_LockSurface(s);
- draw_space_dots(s);
+ draw_dust(s);
draw_engine_dots(s);
draw_bang_dots(s);
SDL_UnlockSurface(s);
}
+SDL_Surface *
+load_image(char *filename)
+{
+ SDL_Surface *tmp, *img = NULL;
+ char *s = add_data_path(filename);
+ if(s) {
+ tmp = IMG_Load(s);
+ free(s);
+ if(tmp) {
+ img = SDL_DisplayFormat(tmp);
+ SDL_FreeSurface(tmp);
+ }
+ }
+ return img;
+}
+
int
-init(int fullscreen) {
+init(void) {
int i;
- SDL_Surface *temp;
+ char *s;
Uint32 flag;
// Where are our data files?
if(!find_files()) exit(1);
read_high_score_table();
- if(sound_flag) {
+ if(opt_sound) {
// Initialize SDL with audio and video
if(SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO) != 0) {
- sound_flag = 0;
+ opt_sound = 0;
printf ("Can't open sound, starting without it\n");
atexit(SDL_Quit);
} else {
atexit(SDL_Quit);
atexit(SDL_CloseAudio);
- sound_flag = init_sound();
+ opt_sound = init_sound();
}
} else {
// Initialize with video only
atexit(SDL_Quit);
}
- play_tune(0);
+ play_tune(TUNE_TITLE_PAGE);
// Attempt to get the required video size
flag = SDL_DOUBLEBUF | SDL_HWSURFACE;
- if(fullscreen) flag |= SDL_FULLSCREEN;
+ if(opt_fullscreen) flag |= SDL_FULLSCREEN;
surf_screen = SDL_SetVideoMode(XSIZE,YSIZE,16,flag);
// Set the title bar text
}
// Load the banners
- NULLERROR(temp = IMG_Load(add_path("banners/variations.png")));
- NULLERROR(surf_b_variations = SDL_DisplayFormat(temp));
+ NULLERROR(surf_b_variations = load_image("banners/variations.png"));
+ NULLERROR(surf_b_on = load_image("banners/on.png"));
+ NULLERROR(surf_b_rockdodger = load_image("banners/rockdodger.png"));
- NULLERROR(temp = IMG_Load(add_path("banners/on.png")));
- NULLERROR(surf_b_on = SDL_DisplayFormat(temp));
-
- NULLERROR(temp = IMG_Load(add_path("banners/rockdodger.png")));
- NULLERROR(surf_b_rockdodger = SDL_DisplayFormat(temp));
-
- NULLERROR(temp = IMG_Load(add_path("banners/game.png")));
- NULLERROR(surf_b_game = SDL_DisplayFormat(temp));
-
- NULLERROR(temp = IMG_Load(add_path("banners/over.png")));
- NULLERROR(surf_b_over = SDL_DisplayFormat(temp));
-
- surf_font_big = IMG_Load(add_path(BIG_FONT_FILE));
- g_font = SFont_InitFont(surf_font_big);
+ NULLERROR(surf_b_game = load_image("banners/game.png"));
+ NULLERROR(surf_b_over = load_image("banners/over.png"));
// Load the spaceship graphic.
- NULLERROR(temp = IMG_Load(add_path("sprites/ship.png")));
- NULLERROR(surf_ship = SDL_DisplayFormat(temp));
+ NULLERROR(surf_ship = load_image("sprites/ship.png"));
get_shape(surf_ship, &shipshape);
// Load the life indicator (small ship) graphic.
- NULLERROR(temp = IMG_Load(add_path("indicators/life.png")));
- NULLERROR(surf_life = SDL_DisplayFormat(temp));
+ NULLERROR(surf_life = load_image("indicators/life.png"));
+
+ // Load the font image
+ s = add_data_path(BIG_FONT_FILE);
+ if(s) {
+ NULLERROR(surf_font_big = IMG_Load(s));
+ free(s);
+ g_font = SFont_InitFont(surf_font_big);
+ }
init_engine_dots();
- init_space_dots();
+ init_dust();
init_rocks();
int
draw() {
int i;
- SDL_Rect src,dest;
+ SDL_Rect dest;
int bang, x;
char *text;
float fadegame,fadeover;
bang = 0;
- src.x = 0;
- src.y = 0;
- dest.x = 0;
- dest.y = 0;
-
// Draw a fully black background
SDL_FillRect(surf_screen,NULL,0);
drawdots(surf_screen);
// Draw ship
- 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)shipx;
- dest.y = (int)shipy;
- SDL_BlitSurface(surf_ship,&src,surf_screen,&dest);
+ if(state == GAMEPLAY ) {
+ dest.x = shipx;
+ dest.y = shipy;
+ SDL_BlitSurface(surf_ship,NULL,surf_screen,&dest);
}
draw_rocks();
// 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);
+ if(state == GAMEPLAY || state == DEAD_PAUSE || state == GAME_OVER) {
+ for(i = 0; i<nships-1; i++) {
+ dest.x = (i + 1)*(surf_life->w + 10);
+ dest.y = 20;
+ SDL_BlitSurface(surf_life, NULL, surf_screen, &dest);
+ }
}
// Draw the score
fadeover = 1.0;
}
- src.w = surf_b_game->w;
- src.h = surf_b_game->h;
- dest.w = src.w;
- 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 += gamerate/1.0))));
- SDL_BlitSurface(surf_b_game,&src,surf_screen,&dest);
-
- src.w = surf_b_over->w;
- src.h = surf_b_over->h;
- dest.w = src.w;
- dest.h = src.h;
- dest.x = (XSIZE-src.w)/2;
- dest.y = (YSIZE-src.h)/2 + 40;
+ dest.x = (XSIZE-surf_b_game->w)/2;
+ dest.y = (YSIZE-surf_b_game->h)/2-40;
+ SDL_SetAlpha(surf_b_game, SDL_SRCALPHA, (int)(fadegame*(200 + 55*cos(fadetimer += t_frame/1.0))));
+ SDL_BlitSurface(surf_b_game,NULL,surf_screen,&dest);
+
+ dest.x = (XSIZE-surf_b_over->w)/2;
+ dest.y = (YSIZE-surf_b_over->h)/2 + 40;
SDL_SetAlpha(surf_b_over, SDL_SRCALPHA, (int)(fadeover*(200 + 55*sin(fadetimer))));
- SDL_BlitSurface(surf_b_over,&src,surf_screen,&dest);
+ SDL_BlitSurface(surf_b_over,NULL,surf_screen,&dest);
break;
case TITLE_PAGE:
- 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 + 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 += gamerate/2.0)));
- SDL_BlitSurface(surf_b_variations,&src,surf_screen,&dest);
-
- src.w = surf_b_on->w;
- src.h = surf_b_on->h;
- dest.w = src.w;
- dest.h = src.h;
- dest.x = (XSIZE-src.w)/2 + cos((fadetimer + 1.0)/6.5)*10;
- dest.y = (YSIZE/2-src.h)/2 + surf_b_variations->h + 20 + sin((fadetimer + 1.0)/5.0)*10;
+ dest.x = (XSIZE-surf_b_variations->w)/2 + cos(fadetimer/6.5)*10;
+ dest.y = (YSIZE/2-surf_b_variations->h)/2 + sin(fadetimer/5.0)*10;
+ SDL_SetAlpha(surf_b_variations, SDL_SRCALPHA, (int)(200 + 55*sin(fadetimer += t_frame/2.0)));
+ SDL_BlitSurface(surf_b_variations,NULL,surf_screen,&dest);
+
+ dest.x = (XSIZE-surf_b_on->w)/2 + cos((fadetimer + 1.0)/6.5)*10;
+ dest.y = (YSIZE/2-surf_b_on->h)/2 + surf_b_variations->h + 20 + sin((fadetimer + 1.0)/5.0)*10;
SDL_SetAlpha(surf_b_on, SDL_SRCALPHA, (int)(200 + 55*sin(fadetimer-1.0)));
- SDL_BlitSurface(surf_b_on,&src,surf_screen,&dest);
-
- src.w = surf_b_rockdodger->w;
- src.h = surf_b_rockdodger->h;
- dest.w = src.w;
- dest.h = src.h;
- dest.x = (XSIZE-src.w)/2 + cos((fadetimer + 2.0)/6.5)*10;
- dest.y = (YSIZE/2-src.h)/2 + surf_b_variations->h + surf_b_on->h + 40 + sin((fadetimer + 2.0)/5)*10;
+ SDL_BlitSurface(surf_b_on,NULL,surf_screen,&dest);
+
+ dest.x = (XSIZE-surf_b_rockdodger->w)/2 + cos((fadetimer + 2.0)/6.5)*10;
+ dest.y = (YSIZE/2-surf_b_rockdodger->h)/2 + surf_b_variations->h + surf_b_on->h + 40 + sin((fadetimer + 2.0)/5)*10;
SDL_SetAlpha(surf_b_rockdodger, SDL_SRCALPHA, (int)(200 + 55*sin(fadetimer-2.0)));
- SDL_BlitSurface(surf_b_rockdodger,&src,surf_screen,&dest);
+ SDL_BlitSurface(surf_b_rockdodger,NULL,surf_screen,&dest);
text = "Version " VERSION;
x = (XSIZE-SFont_TextWidth(g_font,text))/2 + sin(fadetimer/4.5)*10;
break;
case HIGH_SCORE_ENTRY:
- play_tune(2);
+ play_tune(TUNE_HIGH_SCORE_ENTRY);
if(!process_score_input()) { // done inputting name
// Change state to briefly show high scores page
// Write the high score table to the file
write_high_score_table();
- // Play the title page tune
- play_tune(0);
+ play_tune(TUNE_TITLE_PAGE);
}
// FALL THROUGH TO
case HIGH_SCORE_DISPLAY:
; // no action necessary
}
- if(!gameover && state == GAMEPLAY) {
+ if(state == GAMEPLAY) {
bang = hit_rocks(shipx, shipy, &shipshape);
}
- ticks_since_last = SDL_GetTicks()-last_ticks;
- last_ticks = SDL_GetTicks();
- if(ticks_since_last>200 || ticks_since_last<0) {
- gamerate = 0;
- }
- else {
- gamerate = GAMESPEED*ticks_since_last/50.0;
- if(state == GAMEPLAY) {
- score += ticks_since_last;
- }
+ ms_frame = SDL_GetTicks() - ms_end;
+ ms_end += ms_frame;
+ if(ms_frame>200 || ms_frame<0) {
+ // We won't run at all below 5 frames per second.
+ // This also happens if we were paused, grr.
+ t_frame = 0;
+ ms_frame = 0;
+ } else {
+ t_frame = opt_gamespeed * ms_frame / 50;
+ if(state == GAMEPLAY) score += ms_frame;
}
// Update the surface
int
gameloop() {
- Uint8 *keystate;
+ Uint8 *keystate = SDL_GetKeyState(NULL);
float tmp;
if(!paused) {
// Count down the game loop timer, and change state when it gets to zero or less;
- if((state_timeout -= gamerate*3) < 0) {
+ if((state_timeout -= t_frame*3) < 0) {
switch(state) {
case DEAD_PAUSE:
// Create a new ship and start all over again
state = GAMEPLAY;
- play_tune(1);
- shipx -= 50;
+ play_tune(TUNE_GAMEPLAY);
break;
case GAME_OVER:
- state = HIGH_SCORE_ENTRY;
- state_timeout = 5.0e6;
if(new_high_score(score)) {
SDL_Event e;
+ state = HIGH_SCORE_ENTRY;
+ state_timeout = 5.0e6;
SDL_EnableUNICODE(1);
while(SDL_PollEvent(&e))
;
- } else {
+ } else if(!keystate[SDLK_SPACE]) {
state = HIGH_SCORE_DISPLAY;
state_timeout = 400;
}
state_timeout = 500.0;
break;
case HIGH_SCORE_ENTRY:
- // state = TITLE_PAGE;
- // play_tune(1);
- // state_timeout = 100.0;
break;
case TITLE_PAGE:
state = HIGH_SCORE_DISPLAY;
blast_radius = BLAST_RADIUS * (DEAD_PAUSE_LENGTH - state_timeout) / 20.0;
fixonly = 0;
}
- blast_rocks(shipx, shipy, blast_radius, fixonly);
+ blast_rocks(bangx, bangy, blast_radius, fixonly);
- if(shipx < 60) shipx = 60;
+ if(bangx < 60) bangx = 60;
}
}
new_rocks();
- // FRICTION?
- if(friction) {
- shipdx *= pow((double)0.9,(double)gamerate);
- shipdy *= pow((double)0.9,(double)gamerate);
- }
+ // INERTIA
+ shipx += shipdx*t_frame;
+ shipy += shipdy*t_frame;
// SCROLLING
- tmp = shipy - (YSIZE / 2);
- tmp += shipdy * 25;
- tmp /= -25;
- tmp = ((screendy * (gamerate - 12)) + (tmp * gamerate)) / 12;
- screendy = -tmp;
- if(state == GAMEPLAY) {
- tmp = shipx - (XSIZE / 2);
- tmp += shipdx * 25;
- tmp /= -25;
- tmp = ((screendx * (gamerate - 12)) + (tmp * gamerate)) / 12;
- screendx = -tmp;
- } else screendx = 7.5;
-
- xscroll = screendx * gamerate;
- yscroll = screendy * gamerate;
+ tmp = (shipy-YSCROLLTO)/25 + (shipdy-screendy);
+ screendy += tmp * t_frame/12;
+ tmp = (shipx-XSCROLLTO)/25 + (shipdx-screendx);
+ screendx += tmp * t_frame/12;
+ // taper off so we don't hit the barrier abruptly.
+ // (if we would hit in < 2 seconds, adjust to 2 seconds).
+ if(back_dist + (screendx - SCREENDXMIN)*TO_TICKS(2) < 0) {
+ screendx = SCREENDXMIN - (back_dist/TO_TICKS(2));
+ }
+
+ back_dist += (screendx - SCREENDXMIN)*t_frame;
+ if(opt_max_lead >= 0) back_dist = min(back_dist, opt_max_lead);
+
+ xscroll = screendx * t_frame;
+ yscroll = screendy * t_frame;
+
+ shipx -= xscroll;
+ shipy -= yscroll;
+
+ // move bang center
+ bangx += bangdx*t_frame - xscroll;
+ bangy += bangdy*t_frame - yscroll;
- // INERTIA
- shipx += shipdx*gamerate - xscroll;
- shipy += shipdy*gamerate - yscroll;
-
move_rocks();
// BOUNCE X
if(shipx<0 || shipx>XSIZE-surf_ship->w) {
// BOUNCE from left and right wall
- shipx -= shipdx*gamerate;
- shipdx *= -99;
+ shipx -= (shipdx-screendx)*t_frame;
+ shipdx = screendx - (shipdx-screendx)*opt_bounciness;
}
// BOUNCE Y
if(shipy<0 || shipy>YSIZE-surf_ship->h) {
// BOUNCE from top and bottom wall
- printf("bouncing top/bottom.\n");
- shipy -= shipdy;
- shipdy *= -0.99;
+ shipy -= (shipdy-screendy)*t_frame;
+ shipdy = screendy - (shipdy-screendy)*opt_bounciness;
}
if(draw() && state == GAMEPLAY) {
- // Play the explosion sound
- play_sound(0);
- make_bang_dots(shipx,shipy,shipdx,shipdy,surf_ship,30);
- shipdx = 0;
- shipdy = 0;
+ // Died
+ play_sound(SOUND_BANG); // Play the explosion sound
+ bangx = shipx; bangy = shipy; bangdx = shipdx; bangdy = shipdy;
+ new_bang_dots(shipx,shipy,shipdx,shipdy,surf_ship);
+ shipdx *= 0.5; shipdy *= 0.5;
+ if(shipdx < SCREENDXMIN) shipdx = SCREENDXMIN;
if(--nships <= 0) {
- gameover = 1;
state = GAME_OVER;
+ shipdx = SCREENDXMIN; shipdy = 0;
state_timeout = 200.0;
fadetimer = 0.0;
- faderate = gamerate;
+ faderate = t_frame;
}
else {
state = DEAD_PAUSE;
SDL_PumpEvents();
keystate = SDL_GetKeyState(NULL);
+ // new game
if(keystate[SDLK_SPACE] && (state == HIGH_SCORE_DISPLAY || state == TITLE_PAGE)) {
reset_rocks();
score = 0;
state = GAMEPLAY;
- play_tune(1);
+ play_tune(TUNE_GAMEPLAY);
- gameover = 0;
- shipx = XSIZE/2;
- shipy = YSIZE/2;
- shipdx = 0;
- shipdy = 0;
+ shipx = XSIZE/2.2; shipy = YSIZE/2;
+ shipdx = screendx; shipdy = screendy;
}
- maneuver = 0;
+ jets = 0;
} else {
SDL_PumpEvents();
keystate = SDL_GetKeyState(NULL);
}
if(state == GAMEPLAY) {
- if(!gameover) {
-
- if(!paused) {
- 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(!paused) {
+ if(keystate[SDLK_LEFT] | keystate[SDLK_h]) { shipdx -= 1.5*t_frame; jets |= 1<<0;}
+ if(keystate[SDLK_DOWN] | keystate[SDLK_t]) { shipdy += 1.5*t_frame; jets |= 1<<1;}
+ if(keystate[SDLK_RIGHT] | keystate[SDLK_n]) { shipdx += 1.5*t_frame; jets |= 1<<2;}
+ if(keystate[SDLK_UP] | keystate[SDLK_c]) { shipdy -= 1.5*t_frame; jets |= 1<<3;}
+ if(keystate[SDLK_3]) { SDL_SaveBMP(surf_screen, "snapshot.bmp"); }
+ }
- if(keystate[SDLK_p] | keystate[SDLK_s]) {
- if(!pausedown) {
- paused = !paused;
- pausedown = 1;
- }
- } else {
- pausedown = 0;
+ if(keystate[SDLK_p] | keystate[SDLK_s]) {
+ if(!pausedown) {
+ paused = !paused;
+ pausedown = 1;
}
-
- }
- else {
- paused = 0;
+ } else {
pausedown = 0;
}
} else if(state == GAME_OVER) {
int
main(int argc, char **argv) {
- int x, fullscreen;
-
- fullscreen = 0;
- tail_plume = 0;
- friction = 0;
- sound_flag = 1;
- music_flag = 0;
-
- while ((x = getopt(argc,argv,"efhmps")) >= 0) {
- switch(x) {
- case 'e': // engine
- tail_plume = 1;
- break;
- case 'f': // fullscreen
- fullscreen = 1;
- 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"
- " -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
- sound_flag = 0;
- music_flag = 0;
- break;
- }
- }
+ init_opts();
+ argp_parse(&argp, argc, argv, 0, 0, 0);
- if(init(fullscreen)) {
+ if(init()) {
printf ("ta: '%s'\n",initerror);
return 1;
}
- reset_rocks();
- initticks = SDL_GetTicks();
gameloop();
return 0;
Got questions, comments, patches, etc.? Contact Jason Woofenden