#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"
*surf_b_over, // Title element "over"
*surf_ship, // Spaceship element
*surf_life, // Indicator of number of ships remaining
- *surf_speed, // Speed indicator
*surf_rock[NROCKS], // THE ROCKS
*surf_font_big; // The big font
char topline[1024];
char *initerror = "";
+// Command-line argument parsing
+int opt_fullscreen;
+int opt_sound;
+int opt_music;
+float opt_gamespeed;
+int opt_tail_engine;
+int opt_friction;
+
+const char *argp_program_version = "Variations on Rockdodger " VERSION;
+const char *argp_program_bug_address = "<josh@qualdan.com>";
+static char doc[] = "VoR: Dodge the rocks until you die.";
+static struct argp_option opts[] = {
+ {0, 0, 0, 0, "Basic Options:", 0},
+ {"full-screen", 'f', 0, 0, "", 0},
+ {"music", 'm', 0, 0, "Enable music", 0},
+ {"silent", 's', 0, 0, "Turn off explosion sounds", 0},
+ {0, 0, 0, 0, "Gameplay Options:", 1},
+ {"game-speed", 'g', "N%", 0, "Game speed [50-100%]", 1},
+ {"engine", 'e', 0, 0, "Display large tail plume", 1},
+ {"old-physics", 'p', 0, 0, "Original physics (i.e. friction).", 1},
+ {0}
+};
+error_t parse_opt(int, char*, struct argp_state *);
+static struct argp argp = { opts, &parse_opt, 0, doc };
+
+
struct shape shipshape;
float shipx = XSIZE/2, shipy = YSIZE/2; // X position, 0..XSIZE
-float shipdx = 8, shipdy = 0; // Change in X position per tick.
+float shipdx = 7.5, shipdy = 0.0; // Change in X position per tick.
float screendx = 7.5, screendy = 0.0;
float xscroll, yscroll;
float gamerate; // this controls the speed of everything that moves.
float bangx, bangy, bangdx, bangdy;
-float game_dist, avg_speed, cur_speed;
-uint16_t avg_speed_w, cur_speed_w; // [0, 74]
-
-int nships,score,game_ticks,ticks_since_last,last_ticks;
+int nships,score,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 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;
// ************************************* FUNCS
+void
+init_opts(void)
+{
+ opt_fullscreen = 0;
+ opt_sound = 1;
+ opt_music = 0;
+ opt_gamespeed = 1.00; // Run game at full speed.
+ // These switch back to the old gameplay and are off by default.
+ opt_tail_engine = 0;
+ opt_friction = 0;
+}
+
+error_t
+parse_opt(int key, char *arg, struct argp_state *state)
+{
+ int i;
+
+ switch(key) {
+ case 'f': opt_fullscreen = 1; break;
+ case 'm': opt_music = 1; break;
+ case 's': opt_sound = 0; opt_music = 0; break;
+ case 'g': sscanf(arg, "%d%%", &i);
+ if(i < 50) i = 50; else if(i > 100) i = 100;
+ opt_gamespeed = (float)i / 100;
+ break;
+ case 'e': opt_tail_engine = 1; break;
+ case 'p': opt_friction = 1; break;
+ default: break;
+ }
+ return 0;
+}
+
float
rnd() {
return (float)random()/(float)RAND_MAX;
int i;
double theta,r,dx,dy;
- if(!tail_plume) return;
+ if(!opt_tail_engine) return;
if(state == GAMEPLAY) {
for(i = 0; i<newdots*gamerate; i++) {
}
int
-init(int fullscreen) {
+init(void) {
int i;
SDL_Surface *temp;
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
// 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
NULLERROR(temp = IMG_Load(add_path("indicators/life.png")));
NULLERROR(surf_life = SDL_DisplayFormat(temp));
- NULLERROR(temp = IMG_Load(add_path("indicators/speed.png")));
- NULLERROR(surf_speed = SDL_DisplayFormat(temp));
-
init_engine_dots();
init_space_dots();
int
draw() {
int i;
- SDL_Rect src, dest;
+ SDL_Rect dest;
int bang, x;
char *text;
float fadegame,fadeover;
SDL_BlitSurface(surf_life, NULL, surf_screen, &dest);
}
- if(state == GAMEPLAY) {
- // Update speeds.
- cur_speed = shipdx;
- if(shipdx < 0) cur_speed = 0;
- if(shipdx > 20) cur_speed = 20;
- game_dist += cur_speed*ticks_since_last;
- game_ticks += ticks_since_last;
- if(game_ticks < 2*1000) avg_speed = cur_speed;
- else avg_speed = game_dist/game_ticks;
- //printf("avg=%.2f, cur=%.2f. shipdx=%.2f\n", avg_speed, cur_speed, shipdx);
- avg_speed_w = 2 + 64*avg_speed/20;
- cur_speed_w = 2 + 64*cur_speed/20;
- }
-
- if(state == GAMEPLAY || state == DEAD_PAUSE) {
- // Draw the speed indicators.
- src.x = 0; src.y = 0;
- src.h = surf_speed->h;
- dest.x = 240;
- src.w = avg_speed_w; dest.y = 10;
- SDL_BlitSurface(surf_speed, &src, surf_screen, &dest);
- src.w = cur_speed_w; dest.y = 20;
- SDL_BlitSurface(surf_speed, &src, surf_screen, &dest);
- }
-
// Draw the score
snprintscore_line(topline, 50, score);
SFont_Write(surf_screen, g_font, XSIZE-250, 0, topline);
gamerate = 0;
}
else {
- gamerate = GAMESPEED*ticks_since_last/50.0;
+ gamerate = opt_gamespeed*ticks_since_last/50.0;
if(state == GAMEPLAY) {
score += ticks_since_last;
}
new_rocks();
// FRICTION?
- if(friction) {
+ if(opt_friction) {
shipdx *= pow((double)0.9,(double)gamerate);
shipdy *= pow((double)0.9,(double)gamerate);
}
tmp /= -25;
tmp = ((screendx * (gamerate - 12)) + (tmp * gamerate)) / 12;
screendx = -tmp;
+ if(screendx < 7.5) screendx=7.5;
xscroll = screendx * gamerate;
yscroll = screendy * gamerate;
// BOUNCE X
if(shipx<0 || shipx>XSIZE-surf_ship->w) {
// BOUNCE from left and right wall
- shipx -= shipdx*gamerate;
- shipdx *= -0.99;
+ shipx -= (shipdx-screendx)*gamerate;
+ shipdx = 2*screendx-shipdx;
}
// BOUNCE Y
if(shipy<0 || shipy>YSIZE-surf_ship->h) {
// BOUNCE from top and bottom wall
- shipy -= shipdy;
- shipdy *= -0.99;
+ shipy -= (shipdy-screendy)*gamerate;
+ shipdy = 2*screendy-shipdy;
}
reset_rocks();
- game_ticks = 0;
- game_dist = 0;
-
nships = 4;
score = 0;
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;
}
Got questions, comments, patches, etc.? Contact Jason Woofenden