* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
-#ifdef DEBUG
-#include "debug.h"
-#endif
-
-#include "args.h"
-#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 <SDL.h>
+#include <SDL_image.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.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 "sprite.h"
+#include "sound.h"
+
// ************************************* VARS
// SDL_Surface global variables
SDL_Surface
*surf_b_rockdodger, // "rockdodger" banner
*surf_b_game, // Title element "game"
*surf_b_over, // Title element "over"
- *surf_ship, // Spaceship element
*surf_life, // Indicator of number of ships remaining
*surf_rock[NROCKS], // THE ROCKS
*surf_font_big; // The big 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 = XSIZE/2, shipy = YSIZE/2; // X position, 0..XSIZE
-float shipdx = SCREENDXMIN, shipdy = 0.0; // Change in X position per tick.
+struct ship ship = { SHIP, 0, NULL, XSIZE/2, YSIZE/2, SCREENDXMIN, 0.0 };
+
float screendx = SCREENDXMIN, screendy = 0.0;
-float xscroll, yscroll;
-float framelen; // this controls the speed of everything that moves.
+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)
+int bang = false;
float bangx, bangy, bangdx, bangdy;
-int nships,score,ticks_since_last,last_ticks;
-int gameover;
-int maneuver = 0;
+int score;
float fadetimer = 0, faderate;
enum states state = TITLE_PAGE;
float state_timeout = 600.0;
-#define NSEQUENCE 2
-char *sequence[] = {
- "Press SPACE to start",
- "http://herkamire.com/jason/vor"
+#define NSEQUENCE 3
+char *msgs[2][3] = {
+ {
+ "Press SPACE for normal game",
+ "Press 'e' for easy game",
+ "http://jasonwoof.org/vor"
+ },
+ {
+ "Press SPACE for easy game",
+ "Press 'n' for normal game",
+ "http://jasonwoof.org/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);
+ Sprite *hit;
+ 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 - screendx)*t_frame;
+ bdot[i].y += (bdot[i].dy - screendy)*t_frame;
+ 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*framelen - xscroll;
- bdot[i].y += bdot[i].dy*framelen - yscroll;
-
- if(bdot[i].life<0)
- bdot[i].active = 0;
+ // check collisions
+ if((hit = pixel_collides(bdot[i].x, bdot[i].y))) {
+ if(hit->type != SHIP) { // they shouldn't hit the ship, but they do
+ bdot[i].active = 0;
+ hit->dx += ENGINE_DOT_WEIGHT * bdot[i].life * bdot[i].dx / sprite_mass(hit);
+ hit->dy += ENGINE_DOT_WEIGHT * bdot[i].life * bdot[i].dy / sprite_mass(hit);
+ 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 / (1.3 + sdot[i].z);
- sdot[i].y -= yscroll / (1.3 + 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 = ship.image->w / 2;
+ hy = ship.image->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*framelen - xscroll;
- edot[i].y += edot[i].dy*framelen - yscroll;
- if((edot[i].life -= framelen*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 = ship.x + s[dir]*hx + (frnd()-0.5)*3;
+ dotptr->y = ship.y + s[(dir+1)&3]*hy + (frnd()-0.5)*3;
+ if(dir&1) {
+ dotptr->dx = ship.dx + 2*dx;
+ dotptr->dy = ship.dy + 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 = ship.dx + 20*dx;
+ dotptr->dy = ship.dy + 2*dy;
+ dotptr->life = 60 * fabs(dx);
}
- }
- }
-}
-void
-create_engine_dots(int newdots) {
- int i;
- double theta,r,dx,dy;
-
- if(!opt_tail_engine) return;
-
- if(state == GAMEPLAY) {
- for(i = 0; i<newdots*framelen; 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;
-
- // 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;
+ uint16_t c;
+ uint16_t *pixels = (uint16_t *) s->pixels;
+ int row_inc = s->pitch/sizeof(uint16_t);
+ int heatindex;
+ Sprite *hit;
- 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 - screendx)*t_frame;
+ edot[i].y += (edot[i].dy - screendy)*t_frame;
+ 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;
+ }
+ // check collisions
+ if((hit = pixel_collides(edot[i].x, edot[i].y))) {
+ if(hit->type != SHIP) { // they shouldn't hit the ship, but they do
+ edot[i].active = 0;
+ hit->dx += ENGINE_DOT_WEIGHT * edot[i].life * edot[i].dx / sprite_mass(hit);
+ hit->dy += ENGINE_DOT_WEIGHT * edot[i].life * edot[i].dy / sprite_mass(hit);
+ 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(ship.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;
+}
+
+void
+load_ship(void)
+{
+ load_sprite(SPRITE(&ship), "sprites/ship.png");
+}
+
int
init(void) {
int i;
- SDL_Surface *temp;
+ char *s;
Uint32 flag;
// Where are our data files?
// Initialize SDL with audio and video
if(SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO) != 0) {
opt_sound = 0;
- printf ("Can't open sound, starting without it\n");
+ fputs("Can't open sound, starting without it\n", stderr);
atexit(SDL_Quit);
} else {
atexit(SDL_Quit);
atexit(SDL_Quit);
}
- play_tune(0);
+ play_tune(TUNE_TITLE_PAGE);
// Attempt to get the required video size
flag = SDL_DOUBLEBUF | SDL_HWSURFACE;
}
// Load the banners
- NULLERROR(temp = IMG_Load(add_path("banners/variations.png")));
- NULLERROR(surf_b_variations = SDL_DisplayFormat(temp));
-
- 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_variations = load_image("banners/variations.png"));
+ NULLERROR(surf_b_on = load_image("banners/on.png"));
+ NULLERROR(surf_b_rockdodger = load_image("banners/rockdodger.png"));
- // Load the spaceship graphic.
- NULLERROR(temp = IMG_Load(add_path("sprites/ship.png")));
- NULLERROR(surf_ship = SDL_DisplayFormat(temp));
- get_shape(surf_ship, &shipshape);
+ NULLERROR(surf_b_game = load_image("banners/game.png"));
+ NULLERROR(surf_b_over = load_image("banners/over.png"));
// 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();
+ init_sprites();
+ add_sprite(SPRITE(&ship));
// Remove the mouse cursor
#ifdef SDL_DISABLE
return 0;
}
-int
-draw() {
+void
+show_lives(void)
+{
int i;
SDL_Rect dest;
- int bang, x;
- char *text;
- float fadegame,fadeover;
- bang = 0;
+ for(i=0; i<ship.lives-1; i++) {
+ dest.x = (i + 1)*(surf_life->w + 10);
+ dest.y = 20;
+ SDL_BlitSurface(surf_life, NULL, surf_screen, &dest);
+ }
+}
- // Draw a fully black background
- SDL_FillRect(surf_screen,NULL,0);
+void
+draw_game_over(void)
+{
+ int x;
+ char *text0, *text1;
+ SDL_Rect dest;
+ float a_game = 0, a_over = 0;
- // Draw the background dots
- drawdots(surf_screen);
+ // fade in "GAME", then "OVER".
+ a_game = min(1.0, faderate*fadetimer/3.0);
+ if(a_game == 1.0) a_over = min(1.0, faderate*fadetimer/3.0 - 1);
- // Draw ship
- if(!gameover && state == GAMEPLAY ) {
- dest.x = shipx;
- dest.y = shipy;
- SDL_BlitSurface(surf_ship,NULL,surf_screen,&dest);
- }
+ fadetimer += t_frame;
- draw_rocks();
+ 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)(a_game*(200 + 55*cos(fadetimer))));
+ SDL_BlitSurface(surf_b_game,NULL,surf_screen,&dest);
- // Draw the life indicators.
- 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);
+ 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)(a_over*(200 + 55*sin(fadetimer))));
+ SDL_BlitSurface(surf_b_over,NULL,surf_screen,&dest);
+
+ if(new_high_score(score)) {
+ text0 = "New High Score!";
+ text1 = "Press SPACE to continue";
+ } else {
+ text0 = msgs[g_easy][0];
+ text1 = msgs[g_easy][1];
}
- // Draw the score
- snprintscore_line(topline, 50, score);
- SFont_Write(surf_screen, g_font, XSIZE-250, 0, topline);
+ x = (XSIZE-SFont_TextWidth(g_font,text0))/2 + cos(fadetimer/9)*10;
+ SFont_Write(surf_screen,g_font,x,YSIZE-100 + cos(fadetimer/6)*5,text0);
- // If it's game over, show the game over graphic in the dead centre
- switch (state) {
- case GAME_OVER:
- if(fadetimer<3.0/faderate) {
- fadegame = fadetimer/(3.0/faderate);
- } else {
- fadegame = 1.0;
- }
+ x = (XSIZE-SFont_TextWidth(g_font,text1))/2 + sin(fadetimer/9)*10;
+ SFont_Write(surf_screen,g_font,x,YSIZE-50 + sin(fadetimer/4)*5,text1);
+}
- if(fadetimer<3.0/faderate) {
- fadeover = 0.0;
- } else if(fadetimer<6.0/faderate) {
- fadeover = ((3.0/faderate)-fadetimer)/(6.0/faderate);
- } else {
- fadeover = 1.0;
- }
+void
+draw_title_page(void)
+{
+ int x;
+ char *text;
+ SDL_Rect dest;
+
+ fadetimer += t_frame/2.0;
+
+ 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)));
+ 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,NULL,surf_screen,&dest);
- 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 += framelen/1.0))));
- SDL_BlitSurface(surf_b_game,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,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,NULL,surf_screen,&dest);
- break;
+ text = msgs[g_easy][(int)(fadetimer/35)%NSEQUENCE];
+ 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);
- case TITLE_PAGE:
+ text = "Version " VERSION;
+ 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);
+}
- 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 += framelen/2.0)));
- SDL_BlitSurface(surf_b_variations,NULL,surf_screen,&dest);
+void
+draw(void) {
- 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,NULL,surf_screen,&dest);
+ SDL_FillRect(surf_screen,NULL,0); // black background
+ drawdots(surf_screen); // background dots
+ draw_sprite(SPRITE(&ship));
+ draw_rocks();
- 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,NULL,surf_screen,&dest);
+ show_lives();
+ show_score();
- text = "Version " VERSION;
- 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);
+ // If it's game over, show the game over graphic in the dead centre
+ switch (state) {
+ case GAME_OVER: draw_game_over(); break;
- text = sequence[(int)(fadetimer/40)%NSEQUENCE];
- //text = "Press SPACE to start!";
- 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 TITLE_PAGE: draw_title_page(); 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) {
- bang = hit_rocks(shipx, shipy, &shipshape);
- }
+ collisions();
- ticks_since_last = SDL_GetTicks()-last_ticks;
- last_ticks = SDL_GetTicks();
- if(ticks_since_last>200 || ticks_since_last<0) {
- // We won't run at all below 5 frames per second.
- framelen = 0;
- } else {
- framelen = opt_gamespeed*ticks_since_last/50.0;
- if(state == GAMEPLAY) {
- score += ticks_since_last;
- }
- }
+ ms_frame = SDL_GetTicks() - ms_end;
+ ms_end += ms_frame;
+ t_frame = opt_gamespeed * ms_frame / 50;
+ if(state == GAMEPLAY) score += ms_frame;
// Update the surface
SDL_Flip(surf_screen);
+}
+static inline void
+kill_ship(Sprite *ship)
+{
+ ship->flags = MOVE;
+ // ship->flags = MOVE|DRAW; // FADE SHIP
+ // SDL_SetAlpha(ship->image, SDL_SRCALPHA, 0); // FADE SHIP
+ bang = true;
+}
- return bang;
+void
+do_collision(Sprite *a, Sprite *b)
+{
+ if(a->type == SHIP) kill_ship(a);
+ else if (b->type == SHIP) kill_ship(b);
+ else bounce(a, b);
}
-int
+void
+init_score_entry(void)
+{
+ SDL_Event e;
+ state = HIGH_SCORE_ENTRY;
+ state_timeout = 5.0e6;
+ SDL_EnableUNICODE(1);
+ while(SDL_PollEvent(&e))
+ ;
+ insert_score(score);
+}
+
+void
gameloop() {
- Uint8 *keystate;
+ Uint8 *keystate = SDL_GetKeyState(NULL);
float tmp;
for(;;) {
+ SDL_PumpEvents();
+ keystate = SDL_GetKeyState(NULL);
+
if(!paused) {
// Count down the game loop timer, and change state when it gets to zero or less;
- if((state_timeout -= framelen*3) < 0) {
+ if((state_timeout -= t_frame*3) < 0) {
switch(state) {
case DEAD_PAUSE:
- // Create a new ship and start all over again
+ // Restore the ship and continue playing
+ ship.flags = DRAW|MOVE|COLLIDE;
state = GAMEPLAY;
- play_tune(1);
+ play_tune(TUNE_GAMEPLAY);
break;
case GAME_OVER:
- if(new_high_score(score)) {
- SDL_Event e;
- state = HIGH_SCORE_ENTRY;
- state_timeout = 5.0e6;
- SDL_EnableUNICODE(1);
- while(SDL_PollEvent(&e))
- ;
- } else if(!keystate[SDLK_SPACE]) {
+ if(new_high_score(score)) init_score_entry();
+ else {
state = HIGH_SCORE_DISPLAY;
state_timeout = 400;
}
break;
case HIGH_SCORE_DISPLAY:
state = TITLE_PAGE;
- state_timeout = 500.0;
+ state_timeout = 600.0;
+ fadetimer = 0.0;
break;
case HIGH_SCORE_ENTRY:
- // state = TITLE_PAGE;
- // play_tune(1);
- // state_timeout = 100.0;
break;
case TITLE_PAGE:
state = HIGH_SCORE_DISPLAY;
} 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 {
+ // float alpha; // FADE SHIP
+ if(state_timeout >= DEAD_PAUSE_LENGTH - 20.0) {
blast_radius = BLAST_RADIUS * (DEAD_PAUSE_LENGTH - state_timeout) / 20.0;
- fixonly = 0;
+ blast_rocks(bangx, bangy, blast_radius);
}
- blast_rocks(bangx, bangy, blast_radius, fixonly);
if(bangx < 60) bangx = 60;
+
+ // FADE SHIP
+ // alpha = 255.0 * (DEAD_PAUSE_LENGTH - state_timeout) / DEAD_PAUSE_LENGTH;
+ // SDL_SetAlpha(ship.image, SDL_SRCALPHA, (uint8_t)alpha);
}
}
new_rocks();
- // FRICTION?
- if(opt_friction) {
- shipdx *= pow((double)0.9,(double)framelen);
- shipdy *= pow((double)0.9,(double)framelen);
- }
-
- // INERTIA
- shipx += shipdx*framelen;
- shipy += shipdy*framelen;
-
// SCROLLING
- tmp = shipy - (YSIZE / 2);
- tmp += shipdy * 25;
- tmp /= -25;
- tmp = ((screendy * (framelen - 12)) + (tmp * framelen)) / 12;
- screendy = -tmp;
- tmp = shipx - (XSIZE / 3);
- tmp += shipdx * 25;
- tmp /= -25;
- tmp = ((screendx * (framelen - 12)) + (tmp * framelen)) / 12;
- screendx = -tmp;
- if(screendx < SCREENDXMIN) screendx=SCREENDXMIN;
-
- xscroll = screendx * framelen;
- yscroll = screendy * framelen;
-
- shipx -= xscroll;
- shipy -= yscroll;
+ tmp = (ship.y+ship.dy*t_frame-YSCROLLTO)/25 + (ship.dy-screendy);
+ screendy += tmp * t_frame/12;
+ tmp = (ship.x+ship.dx*t_frame-XSCROLLTO)/25 + (ship.dx-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);
// move bang center
- bangx += bangdx*framelen - xscroll;
- bangy += bangdy*framelen - yscroll;
+ bangx += (bangdx - screendx)*t_frame;
+ bangy += (bangdy - screendy)*t_frame;
- move_rocks();
+ move_sprites();
- // BOUNCE X
- if(shipx<0 || shipx>XSIZE-surf_ship->w) {
- // BOUNCE from left and right wall
- shipx -= (shipdx-screendx)*framelen;
- shipdx = screendx - (shipdx-screendx)*opt_bounciness;
+ // BOUNCE off left or right edge of screen
+ if(ship.x < 0 || ship.x+ship.w > XSIZE) {
+ ship.x -= (ship.dx-screendx)*t_frame;
+ ship.dx = screendx - (ship.dx-screendx)*opt_bounciness;
}
- // BOUNCE Y
- if(shipy<0 || shipy>YSIZE-surf_ship->h) {
- // BOUNCE from top and bottom wall
- shipy -= (shipdy-screendy)*framelen;
- shipdy = screendy - (shipdy-screendy)*opt_bounciness;
+ // BOUNCE off top or bottom of screen
+ if(ship.y < 0 || ship.y+ship.h > YSIZE) {
+ ship.y -= (ship.dy-screendy)*t_frame;
+ ship.dy = screendy - (ship.dy-screendy)*opt_bounciness;
}
+ draw();
- if(draw() && state == GAMEPLAY) {
+ if(state == GAMEPLAY && bang) {
// Died
- play_sound(0); // Play the explosion sound
- bangx = shipx; bangy = shipy; bangdx = shipdx; bangdy = shipdy;
- make_bang_dots(shipx,shipy,shipdx,shipdy,surf_ship,30);
- shipdx *= 0.5; shipdy *= 0.5;
- if(shipdx < SCREENDXMIN) shipdx = SCREENDXMIN;
- if(--nships <= 0) {
+ bang = false;
+ play_sound(SOUND_BANG); // Play the explosion sound
+ bangx = ship.x; bangy = ship.y; bangdx = ship.dx; bangdy = ship.dy;
+ new_bang_dots(ship.x,ship.y,ship.dx,ship.dy,ship.image);
+
+ if(--ship.lives) {
+ state = DEAD_PAUSE;
+ state_timeout = DEAD_PAUSE_LENGTH;
+ ship.dx = (ship.dx < 0) ? -sqrt(-ship.dx) : sqrt(ship.dx);
+ ship.dy = (ship.dy < 0) ? -sqrt(-ship.dy) : sqrt(ship.dy);
+ if(ship.dx < SCREENDXMIN) ship.dx = SCREENDXMIN;
+ } else {
state = GAME_OVER;
- gameover = 1;
- shipdx = 8; shipdy = 0;
+ ship.dx = SCREENDXMIN; ship.dy = 0;
state_timeout = 200.0;
fadetimer = 0.0;
- faderate = framelen;
- }
- else {
- state = DEAD_PAUSE;
- state_timeout = DEAD_PAUSE_LENGTH;
+ faderate = t_frame;
}
}
- SDL_PumpEvents();
- keystate = SDL_GetKeyState(NULL);
-
// new game
- if(keystate[SDLK_SPACE] && (state == HIGH_SCORE_DISPLAY || state == TITLE_PAGE)) {
-
- reset_rocks();
+ if((keystate[SDLK_SPACE] || keystate[SDLK_e] || keystate[SDLK_n])
+ && (state == HIGH_SCORE_DISPLAY
+ || state == TITLE_PAGE
+ || state == GAME_OVER)) {
+ if(state == GAME_OVER && new_high_score(score))
+ init_score_entry();
+ else {
+ if((keystate[SDLK_SPACE] && !initial_rocks) || keystate[SDLK_n]) {
+ g_easy = 0;
+ initial_rocks = NORMAL_I_ROCKS;
+ final_rocks = NORMAL_F_ROCKS;
+ if(opt_gamespeed == EASY_GAMESPEED)
+ opt_gamespeed = NORMAL_GAMESPEED;
+ } else if(keystate[SDLK_e]) {
+ g_easy = 1;
+ initial_rocks = EASY_I_ROCKS;
+ final_rocks = EASY_F_ROCKS;
+ opt_gamespeed = EASY_GAMESPEED;
+ }
+ reset_sprites();
+ reset_rocks();
+ screendx = SCREENDXMIN; screendy = 0;
- nships = 4;
- score = 0;
+ ship.x = XSIZE/2.2; ship.y = YSIZE/2;
+ ship.dx = screendx; ship.dy = screendy;
+ ship.lives = 4;
+ ship.flags = MOVE|DRAW|COLLIDE;
+ // SDL_SetAlpha(ship.image, SDL_SRCALPHA, SDL_ALPHA_OPAQUE); // FADE SHIP
+ add_sprite(SPRITE(&ship));
- state = GAMEPLAY;
- play_tune(1);
+ score = 0;
- gameover = 0;
- shipx = XSIZE/2.2; shipy = YSIZE/2;
- shipdx = screendx; shipdy = screendy;
+ state = GAMEPLAY;
+ play_tune(TUNE_GAMEPLAY);
+ }
}
- maneuver = 0;
- } else {
- SDL_PumpEvents();
- keystate = SDL_GetKeyState(NULL);
+ ship.jets = 0;
}
if(state == GAMEPLAY) {
- if(!gameover) {
-
- if(!paused) {
- if(keystate[SDLK_UP] | keystate[SDLK_c]) { shipdy -= 1.5*framelen; maneuver |= 1<<3;}
- if(keystate[SDLK_DOWN] | keystate[SDLK_t]) { shipdy += 1.5*framelen; maneuver |= 1<<1;}
- if(keystate[SDLK_LEFT] | keystate[SDLK_h]) { shipdx -= 1.5*framelen; maneuver |= 1<<2;}
- if(keystate[SDLK_RIGHT] | keystate[SDLK_n]) { shipdx += 1.5*framelen; maneuver |= 1;}
- if(keystate[SDLK_3]) { SDL_SaveBMP(surf_screen, "snapshot.bmp"); }
- }
+ if(!paused) {
+ if(keystate[SDLK_LEFT] | keystate[SDLK_h]) { ship.dx -= 1.5*t_frame; ship.jets |= 1<<0;}
+ if(keystate[SDLK_DOWN] | keystate[SDLK_t]) { ship.dy += 1.5*t_frame; ship.jets |= 1<<1;}
+ if(keystate[SDLK_RIGHT] | keystate[SDLK_n]) { ship.dx += 1.5*t_frame; ship.jets |= 1<<2;}
+ if(keystate[SDLK_UP] | keystate[SDLK_c]) { ship.dy -= 1.5*t_frame; ship.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;
+ if(!paused) ms_end = SDL_GetTicks();
}
-
- }
- else {
- paused = 0;
+ } else {
pausedown = 0;
}
- } else if(state == GAME_OVER) {
- if(keystate[SDLK_SPACE]) {
- state_timeout = -1;
- }
}
- if(state != HIGH_SCORE_ENTRY && (keystate[SDLK_q] || keystate[SDLK_ESCAPE])) {
- return 0;
+ if(state == TITLE_PAGE && keystate[SDLK_h]) {
+ state = HIGH_SCORE_DISPLAY;
+ state_timeout = 400;
}
+ if(state != HIGH_SCORE_ENTRY && (keystate[SDLK_q] || keystate[SDLK_ESCAPE]))
+ return;
+
}
}
return 1;
}
- reset_rocks();
gameloop();
return 0;
Got questions, comments, patches, etc.? Contact Jason Woofenden