X-Git-Url: https://jasonwoof.com/gitweb/?p=vor.git;a=blobdiff_plain;f=main.c;h=ba1c8b7bd6421c71f35543fd8da979fa5eedda50;hp=ab97cbc611dc46b60f043111c0d7778b1e325d4f;hb=ae2d57cc5b1b64621a76aed51ce14f4c555c3bc8;hpb=44c1168e314f92adf033104c615284384572c0b7 diff --git a/main.c b/main.c index ab97cbc..ba1c8b7 100644 --- a/main.c +++ b/main.c @@ -19,66 +19,31 @@ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ -#undef DEBUG - -#include "config.h" -#include "file.h" -#include "score.h" -#include "sound.h" - #include -#include -#include +#include +#include #include #include #include #include -#include #include "SFont.h" -#define CONDERROR(a) if((a)) {initerror = strdup(SDL_GetError());return 1;} -#define NULLERROR(a) CONDERROR((a) == NULL) - -// ************************************* STRUCTS -struct rock_struct { - // Array of black pixel coordinates. This is scanned - // every frame to see if it's still black, and as - // soon as it isn't we BLOW UP - float x,y,xvel,yvel; - int active; - int dead; // has been blown out of the way - // to make room for a new ship appearing. - SDL_Surface *image; - int type_number; -}; -struct black_point_struct { - int x,y; -}; -struct bangdots { - // Bang dots have the same colour as shield dots. - // Bang dots get darker as they age. - // Some are coloured the same as the ex-ship. - float x,y,dx,dy; - Uint16 c; // when zero, use heatcolor[bangdotlife] - float life; // When reduced to 0, set active = 0 - int active; - float decay;// Amount by which to reduce life each time dot is drawn -}; -struct enginedots { - // Engine dots stream out the back of the ship, getting darker as they go. - int active; - float x,y,dx,dy; - // The life of an engine dot - // is a number starting at between 0 and 50 and counting backward. - float life; // When reduced to 0, set active = 0 -}; -struct spacedot { - // Space dots are harmless background items - // All are active. When one falls off the edge, another is created at the start. - float x,y,dx; - Uint16 color; -}; +#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" + +#ifdef WIN32 +#define SDL_SetAlpha(surf, flag, alpha) +#endif // ************************************* VARS // SDL_Surface global variables @@ -89,39 +54,36 @@ 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_deadrock[NROCKS], // THE DEAD ROCKS *surf_font_big; // The big font + 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 char topline[1024]; char *initerror = ""; -float xship,yship = 240.0; // X position, 0..XSIZE -float xvel,yvel; // Change in X position per tick. -float rockrate,rockspeed; -float movementrate; // this controls the speed of everything that moves. -float yscroll; -float scrollvel; - -int nships,score,initticks,ticks_since_last, last_ticks; -int gameover; -int countdown = 0; -int maneuver = 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? +struct ship ship = { SHIP, 0, NULL, XSIZE/2, YSIZE/2, SCREENDXMIN, 0.0 }; + +float screendx = SCREENDXMIN, screendy = 0.0; +float back_dist; + +// all movement is based on t_frame. +float t_frame; // length of this frame (in ticks = 1/20th second) adjusted for gamespeed +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 score; + float fadetimer = 0, faderate; int pausedown = 0, paused = 0; @@ -140,10 +102,18 @@ enum states { enum states state = TITLE_PAGE; float state_timeout = 600.0; -#define NSEQUENCE 2 -char *sequence[] = { - "Press SPACE to start", - "http://qualdan.com/vor/" +#define NSEQUENCE 3 +char *msgs[2][3] = { + { + "Press SPACE for normal game", + "Press '1' for easy game", + "http://jasonwoof.org/vor" + }, + { + "Press SPACE for easy game", + "Press '2' for normal game", + "http://jasonwoof.org/vor" + } }; int bangdotlife, nbangdots; @@ -153,18 +123,10 @@ char *data_dir; extern char *optarg; extern int optind, opterr, optopt; -float dist_sq(float x1, float y1, float x2, float y2) -{ - return (x2-x1)*(x2-x1) + (y2-y1)*(y2-y1); -} +#define TO_TICKS(seconds) ((seconds)*20*opt_gamespeed) // ************************************* FUNCS -float -rnd() { - return (float)random()/(float)RAND_MAX; -} - void init_engine_dots() { int i; @@ -174,320 +136,269 @@ init_engine_dots() { } void -init_space_dots() { - int i,intensity; - for(i = 0; iformat,intensity,intensity,intensity); - - } -} - -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 x,y,endcount; - Uint16 *rawpixel,c; - double theta,r; - int begin_generate; +new_bang_dots(int xbang, int ybang, int dx, int dy, SDL_Surface *s) +{ + int i, n, x, y; + uint16_t *pixel, c; + uint32_t colorkey; + int row_inc; + double theta, r; - begin_generate = SDL_GetTicks(); + n = 24.0 * t_frame; + 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; xw; x++) { - for(y = 0; yh; y++) { - c = rawpixel[s->pitch/2*y + x]; - if(c && c != SDL_MapRGB(s->format,0,255,0)) { - theta = rnd()*M_PI*2; - - 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; + for(i=0; ipixels; + for(y=0; yh; y++) { + for(x = 0; xw; x++) { + c = *pixel++; + if(c && c != colorkey) { + theta = frnd()*M_PI*2; + r = frnd(); r = 1 - r*r; + + 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 = (i < n-3) ? 0 : c; 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; - + bd2 = (bd2+1) % MAXBANGDOTS; } + pixel += row_inc; } } - - if(SDL_GetTicks() - begin_generate > 7) endcount++; } SDL_UnlockSurface(s); - } void -draw_bang_dots(SDL_Surface *s) { +move_bang_dots(float ticks) +{ int i; - int first_i, last_i; - Uint16 *rawpixel; - rawpixel = (Uint16 *) s->pixels; - - first_i = -1; + Sprite *hit; - for(i = bd1; (bd1 <= bd2)?(i= bd1 && i < bd2); last_i = ++i) { + for(i=0; i= XSIZE || bdot[i].y <= 0 || bdot[i].y >= YSIZE) { - // If the dot has drifted outside the perimeter, kill it + // decrement life and maybe kill + bdot[i].life -= bdot[i].decay; + if(bdot[i].life < 0) { bdot[i].active = 0; continue; } + + // move and clip + bdot[i].x += (bdot[i].dx - screendx)*ticks; + bdot[i].y += (bdot[i].dy - screendy)*ticks; + 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*movementrate; - bdot[i].y += bdot[i].dy*movementrate + 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; - } - else { - bd1 = 0; - bd2 = 0; - } - } void -draw_space_dots(SDL_Surface *s) { +draw_bang_dots(SDL_Surface *s) +{ int i; - Uint16 *rawpixel; - rawpixel = (Uint16 *) s->pixels; + uint16_t *pixels, *pixel, c; + int row_inc = s->pitch/sizeof(uint16_t); - for(i = 0; ipitch/2*(int)sdot[i].y) + (int)(sdot[i].x)] = sdot[i].color; - sdot[i].x += sdot[i].dx*movementrate; - sdot[i].y += yscroll; - if(sdot[i].y > YSIZE) { - sdot[i].y -= YSIZE; - } else if(sdot[i].y < 0) { - sdot[i].y += YSIZE; - } - if(sdot[i].x<0) { - sdot[i].x = XSIZE; - } + pixels = (uint16_t *) s->pixels; + + for(i=0; ipixels; + int n = time_span * ENGINE_DOTS_PER_TIC; + 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 }; + float time; + float accelh, accelv, past_ship_dx, past_ship_dy; + + hx = ship.image->w / 2; + hy = ship.image->h / 2; + + for(i = 0; iactive == 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; iYSIZE) { - edot[i].active = 0; - } else if(edot[i].x<0 || edot[i].x>XSIZE) { - edot[i].active = 0; + dotptr->active = 1; + + // dot was created at a random time during the time span + time = frnd() * time_span; // this is how long ago + + // calculate how fast the ship was going when this engine dot was + // created (as if it had a smooth acceleration). This is used in + // determining the velocity of the dots, but not their starting + // location. + accelh = ((ship.jets >> 2) & 1) - (ship.jets & 1); + accelh *= THRUSTER_STRENGTH * time; + past_ship_dx = ship.dx - accelh; + accelv = ((ship.jets >> 1) & 1) - ((ship.jets >> 3) & 1); + accelv *= THRUSTER_STRENGTH * time; + past_ship_dy = ship.dy - accelv; + + // the starting position (not speed) of the dot is calculated as + // though the ship were traveling at a constant speed for this + // time_span. + dotptr->x = (ship.x - (ship.dx - screendx) * time) + s[dir]*hx; + dotptr->y = (ship.y - (ship.dy - screendy) * time) + s[(dir+1)&3]*hy; + if(dir&1) { + dotptr->dx = past_ship_dx + 2*dx; + dotptr->dy = past_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 = past_ship_dx + 20*dx; + dotptr->dy = past_ship_dy + 2*dy; + dotptr->life = 60 * fabs(dx); } + + // move the dot as though it were created in the past + dotptr->x += (dotptr->dx - screendx) * time; + dotptr->y += (dotptr->dy - screendy) * time; + + if(dotptr - edot < MAXENGINEDOTS-1) dotptr++; + else dotptr = edot; } } } void -create_engine_dots(int newdots) { +move_engine_dots(float ticks) { int i; - double theta,r,dx,dy; - - if(!tail_plume) return; - - if(state == GAMEPLAY) { - for(i = 0; iactive == 0) { - theta = rnd()*M_PI*2; - r = rnd(); - dx = cos(theta)*r; - 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->life = 45 + rnd(1)*5; - - dotptr++; - if(dotptr-edot >= MAXENGINEDOTS) { - dotptr = edot; - } + Sprite *hit; + + for(i = 0; i= XSIZE || edot[i].y < 0 || edot[i].y >= YSIZE) { + edot[i].active = 0; + } + + // 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; } } } } 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; iactive == 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); + uint16_t c; + uint16_t *pixels = (uint16_t *) s->pixels; + int row_inc = s->pitch/sizeof(uint16_t); + int heatindex; + for(i = 0; iactive = 1; - dotptr->x = xship + surf_ship->w/2 + (rnd()-0.5)*3; - dotptr->y = yship + 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->life = 60 * adx; - break; - case 1: - dotptr->dx = 2*dx + xvel; - dotptr->dy = -20*ady + yvel; - dotptr->life = 60 * ady; - break; - case 2: - dotptr->x += 14; - dotptr->dx = 20*adx + xvel; - dotptr->dy = 2*dy + yvel; - dotptr->life = 60 * adx; - break; - case 3: - dotptr->dx = 2*dx + xvel; - dotptr->dy = 20*ady + yvel; - dotptr->life = 60 * ady; - break; - } - dotptr++; - if(dotptr-edot >= MAXENGINEDOTS) { - dotptr = edot; - } - } + 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; } } void -drawdots(SDL_Surface *s) { +draw_dots(SDL_Surface *s) { int m; - SDL_LockSurface(s); - // Draw the background stars aka space dots - draw_space_dots(s); - - // Draw the score when playing the game or whn the game is freshly over - if(1 || state == GAMEPLAY || state == DEAD_PAUSE || state == GAME_OVER ) { - SDL_UnlockSurface(s); - - snprintscore_line(topline, 50, score); - SFont_Write(s,g_font,XSIZE-250,0,topline); - - SDL_LockSurface(s); + // Create engine dots + for(m = 0; m<4; m++) { + if(ship.jets & 1< 0) - draw_bang_dots(s); - - SDL_UnlockSurface(s); +void +load_ship(void) +{ + load_sprite(SPRITE(&ship), "ship.png"); } int -init(int fullscreen) { +init(void) { - int i,j; - SDL_Surface *temp; - Uint16 *raw_pixels; + int i; + 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; - printf ("Can't open sound, starting without it\n"); + opt_sound = 0; + fputs("Can't open sound, starting without it\n", stderr); atexit(SDL_Quit); } else { atexit(SDL_Quit); atexit(SDL_CloseAudio); - sound_flag = init_sound(); + opt_sound = init_sound(); } } else { // Initialize with video only @@ -495,11 +406,11 @@ init(int fullscreen) { 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 @@ -516,62 +427,29 @@ init(int fullscreen) { } // 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(surf_b_variations = load_image("b_variations.png")); + NULLERROR(surf_b_on = load_image("b_on.png")); + NULLERROR(surf_b_rockdodger = load_image("b_rockdodger.png")); - 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); - - // Load the spaceship graphic. - NULLERROR(temp = IMG_Load(add_path("sprites/ship.png"))); - NULLERROR(surf_ship = SDL_DisplayFormat(temp)); + NULLERROR(surf_b_game = load_image("b_game.png")); + NULLERROR(surf_b_over = load_image("b_over.png")); // Load the life indicator (small ship) graphic. - NULLERROR(temp = IMG_Load(add_path("indicators/life.png"))); - NULLERROR(surf_life = SDL_DisplayFormat(temp)); - - // Create the array of black points; - SDL_LockSurface(surf_ship); - raw_pixels = (Uint16 *) surf_ship->pixels; - for(i = 0; iw; i++) { - for(j = 0; jh; j++) { - if(raw_pixels[j*(surf_ship->pitch)/2 + i] == 0) { - blackptr->x = i; - blackptr->y = j; - blackptr++; - } - } + NULLERROR(surf_life = load_image("life.png")); + + // Load the font image + s = add_data_path("font.png"); + if(s) { + NULLERROR(surf_font_big = IMG_Load(s)); + free(s); + g_font = SFont_InitFont(surf_font_big); } - SDL_UnlockSurface(surf_ship); - init_engine_dots(); - init_space_dots(); - - // Load all our lovely rocks - for(i = 0; iw; - src.h = surf_ship->h; - dest.w = src.w; - dest.h = src.h; - dest.x = (int)xship; - dest.y = (int)yship; - SDL_BlitSurface(surf_ship,&src,surf_screen,&dest); + SDL_Rect dest; + + for(i=0; iw + 10); + dest.y = 20; + SDL_BlitSurface(surf_life, NULL, surf_screen, &dest); } +} - // Draw all the rocks, in all states - for(i = 0; iw)/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); + + 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]; + } - src.w = rock[i].image->w; - src.h = rock[i].image->h; - dest.w = src.w; - dest.h = src.h; - dest.x = (int) rock[i].x; - dest.y = (int) rock[i].y; + 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); - // Draw the rock - SDL_BlitSurface(rock[i].image,&src,surf_screen,&dest); + 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); +} - } - } +void +draw_title_page(void) +{ + int x; + char *text; + SDL_Rect dest; - // 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; - } + fadetimer += t_frame/2.0; - 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; - } + 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); - 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 += movementrate/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; - SDL_SetAlpha(surf_b_over, SDL_SRCALPHA, (int)(fadeover*(200 + 55*sin(fadetimer)))); - SDL_BlitSurface(surf_b_over,&src,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 += movementrate/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; - 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_SetAlpha(surf_b_rockdodger, SDL_SRCALPHA, (int)(200 + 55*sin(fadetimer-2.0))); - SDL_BlitSurface(surf_b_rockdodger,&src,surf_screen,&dest); - - 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); - - 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; + 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); - case HIGH_SCORE_ENTRY: - play_tune(2); - if(!process_score_input()) { // done inputting name + 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); - // Change state to briefly show high scores page - state = HIGH_SCORE_DISPLAY; - state_timeout = 200; + 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); - // Write the high score table to the file - write_high_score_table(); - - // Play the title page tune - play_tune(0); - } + 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); +} + +void +draw(void) { + + SDL_FillRect(surf_screen,NULL,0); // black background + draw_dots(surf_screen); // background dots + draw_sprite(SPRITE(&ship)); + draw_rocks(); + + show_lives(); + show_score(); + + // If it's game over, show the game over graphic in the dead centre + switch (state) { + case GAME_OVER: draw_game_over(); break; + + case TITLE_PAGE: draw_title_page(); break; + + case HIGH_SCORE_ENTRY: + play_tune(TUNE_HIGH_SCORE_ENTRY); // FALL THROUGH TO case HIGH_SCORE_DISPLAY: // Display de list o high scores mon. display_scores(surf_screen, 150,50); + break; case GAMEPLAY: case DEAD_PAUSE: ; // no action necessary } - if(!gameover && state == GAMEPLAY) { - SDL_LockSurface(surf_screen); - raw_pixels = (Uint16 *) surf_screen->pixels; - // Check that the black points on the ship are - // still black, and not covered up by rocks. - for(p = black_point; ppitch/2 * (p->y + (int)yship) + p->x + (int)xship; - if(raw_pixels[offset]) { - // Set the bang flag - bang = 1; - } - } - SDL_UnlockSurface(surf_screen); - } - - // Draw all the little ships - if(state == GAMEPLAY || state == DEAD_PAUSE || state == GAME_OVER) - for(i = 0; iw; - 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); - } + collisions(); - - // Update the score - /* - n = SDL_GetTicks()-initticks; - if(score) - ticks_since_last = n-score; - score = n; - */ - - ticks_since_last = SDL_GetTicks()-last_ticks; - last_ticks = SDL_GetTicks(); - if(ticks_since_last>200 || ticks_since_last<0) { - movementrate = 0; - } - else { - movementrate = 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; + 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() { - int i = 0; + SDL_Event e; Uint8 *keystate; + float tmp; for(;;) { + while(SDL_PollEvent(&e)) { + switch(e.type) { + case SDL_QUIT: return; + case SDL_KEYUP: + if(e.key.keysym.sym == SDLK_ESCAPE + || e.key.keysym.sym == SDLK_q) + return; + break; + case SDL_KEYDOWN: + if(state == HIGH_SCORE_ENTRY) + if(!process_score_input(&e.key.keysym)) { + // Write the high score table to the file + write_high_score_table(); + // continue to display the scores briefly + state = HIGH_SCORE_DISPLAY; + state_timeout = 200; + play_tune(TUNE_TITLE_PAGE); + } + break; + } + } + 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 -= movementrate*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); - xship -= 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; - SDL_EnableUNICODE(1); - while(SDL_PollEvent(&e)) - ; - } else { + 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; @@ -834,258 +676,146 @@ gameloop() { } } else { if(state == DEAD_PAUSE) { - float blast_radius = BLAST_RADIUS * state_timeout / 20.0; - if(xship < 60) xship = 60; - for(i = 0; i= MAXROCKS) { - rockptr = rock; - } - if(!rockptr->active) { - rockptr->x = (float)XSIZE; - rockptr->xvel = -(rockspeed)*(1 + rnd()); - rockptr->yvel = rnd()-0.5; - rockptr->type_number = random() % NROCKS; - rockptr->image = surf_rock[rockptr->type_number];// [random()%NROCKS]; - rockptr->active = 1; - rockptr->y = rnd()*(YSIZE + rockptr->image->h); - } - if(movementrate>0.1) { - countdown = (int)(ROCKRATE/movementrate); - } else { - countdown = 0; + if(bangx < 60) bangx = 60; } } - // 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; - } - - // INERTIA - xship += xvel*movementrate; - yship += yvel*movementrate; - // SCROLLING - yscroll = yship - (YSIZE / 2); - yscroll += yvel * 25; - yscroll /= -25; - yscroll = ((scrollvel * (12 - movementrate)) + (yscroll * movementrate)) / 12; - scrollvel = yscroll; - yscroll = yscroll*movementrate; - 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 < -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; - } - } + tmp = (ship.y+ship.h/2+ship.dy*t_frame-YSCROLLTO)/25 + (ship.dy-screendy); + screendy += tmp * t_frame/12; + tmp = (ship.x+ship.w/2+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 - screendx)*t_frame; + bangy += (bangdy - screendy)*t_frame; + + move_sprites(t_frame); + move_engine_dots(t_frame); + move_bang_dots(t_frame); + move_dust(t_frame); + + // 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 X - if(xship<0 || xship>XSIZE-surf_ship->w) { - // BOUNCE from left and right wall - xship -= xvel*movementrate; - xvel *= -0.99; + // 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; } - // BOUNCE Y - if(yship<0 || yship>YSIZE-surf_ship->h) { - // BOUNCE from top and bottom wall - yship -= yvel; - yvel *= -0.99; - } + new_rocks(t_frame); + draw(); - if(draw() && state == GAMEPLAY) { - // Play the explosion sound - play_sound(0); - makebangdots(xship,yship,xvel,yvel,surf_ship,30); - if(--nships <= 0) { - gameover = 1; + if(state == GAMEPLAY && bang) { + // Died + 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; + ship.dx = SCREENDXMIN; ship.dy = 0; state_timeout = 200.0; fadetimer = 0.0; - faderate = movementrate; - } - else { - state = DEAD_PAUSE; - state_timeout = 20.0; - xvel = 0; - yvel = 0; + faderate = t_frame; } } - SDL_PumpEvents(); - keystate = SDL_GetKeyState(NULL); + // new game + if((keystate[SDLK_SPACE] || keystate[SDLK_1] || keystate[SDLK_2]) + && (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_2]) { + 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_1]) { + 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; - if(state != HIGH_SCORE_ENTRY && (keystate[SDLK_q] || keystate[SDLK_ESCAPE])) { - return 0; - } + ship.x = XSIZE/2.2; ship.y = YSIZE/2; + ship.dx = screendx; ship.dy = screendy; + ship.lives = 4; + ship.flags = MOVE|DRAW|COLLIDE; + add_sprite(SPRITE(&ship)); - if(keystate[SDLK_SPACE] && (state == HIGH_SCORE_DISPLAY || state == TITLE_PAGE)) { + score = 0; - for(i = 0; iw; - src.h = surf_b_variations->h; - dest.w = src.w; - dest.h = src.h; - dest.x = (XSIZE-src.w)/2; - dest.y = (YSIZE-src.h)/2; - SDL_BlitSurface(surf_b_variations,&src,surf_screen,&dest); - // Update the surface - SDL_Flip(surf_screen); - } - pausedown = 1; - } - } else { - 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 == TITLE_PAGE && keystate[SDLK_h]) { + state = HIGH_SCORE_DISPLAY; + state_timeout = 400; } } } int main(int argc, char **argv) { - int i, 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; - } - } + if(!parse_opts(argc, argv)) return 1; - if(init(fullscreen)) { + if(init()) { printf ("ta: '%s'\n",initerror); return 1; } - for(i = 0; i