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yhdev/pub/download/code/yapong-0.01.c
Yorhel 6242b2ee9c Rewrite to static site 
With a complete reorganisation of the directory structure and most of
the content converted to pandoc-flavoured markdown.

Some TODO's left before this can go live:
- Main page
- Atom feeds
- Bug tracker
2019-03-23 11:56:53 +01:00

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/*
* YAPong.c 0.01 - Yet Another pong clone, made by //YorHel
*
* Copyright 2006 Y.Heling.
* 2006-02-22
* License: MIT
*/
#include <stdio.h>
#include <stdlib.h>
#include <curses.h>
#include <signal.h>
#include <sys/time.h>
#define DI_UP 1
#define DI_DOWN 2
#define DI_RIGHT 3
#define DI_LEFT 4
void movepadel(char, char);
void startgame();
void drawpadels();
void updatescore();
void drawframe();
void updatedot();
void movedot(int);
int print_help(char *);
int winrows, wincols, padsize, padposL, padposR, scoreL,
scoreR, dotX, dotY, delay, padstep, dotstep;
char direX, direY, started, paused, scored, autosize;
WINDOW *win;
int main(int argc, char *argv[]) {
/* defaults */
autosize = 0;
padstep = 1;
dotstep = 1;
winrows = 25; wincols = 80;
padsize = ((winrows-3)/10);
delay = 50 * 1000;
/* args */
{
char *name = *argv++;
char *ch;
while(ch = *argv++) {
if(!strcmp(ch, "-h"))
return print_help(name);
else if(!strcmp(ch, "-l")) {
int level = atoi(*argv++);
switch(level) {
case 1 : delay = 100*1000; padsize = 6; padstep = 2; dotstep = 1; break;
case 2 : delay = 80*1000; padsize = 6; padstep = 2; dotstep = 1; break;
case 3 : delay = 65*1000; padsize = 5; padstep = 1; dotstep = 1; break;
case 4 : delay = 50*1000; padsize = 3; padstep = 1; dotstep = 1; break;
case 5 : delay = 80*1000; padsize = 3; padstep = 1; dotstep = 2; break;
default :
printf("ERROR: unknown level %d\n", level);
return 0; break;
}
}
else if(!strcmp(ch, "-d")) {
delay = atoi(*argv++) * 1000;
if(delay >= 1000*1000 || delay == 0) {
printf("ERROR: delay should be an integer between 0 and 1000\n");
return 1;
}
}
else if(!strcmp(ch, "-p")) {
padsize = atoi(*argv++);
if(padsize > wincols-3 || padsize == 0) {
printf("ERROR: padel size should at least be 1 and should not be too high\n");
return 1;
}
}
else if(!strcmp(ch, "-s")) {
if(!strcmp(*argv, "auto")) {
autosize = 1; *argv++;
} else {
wincols = atoi(*argv++);
winrows = atoi(*argv++);
autosize = 0;
if(wincols < 20 || winrows < 5) {
printf("ERROR: Window size should at least be 20x5\n");
return 1;
}
}
}
else if(!strcmp(ch, "-ps")) {
padstep = atoi(*argv++);
if(padstep > padsize || padstep <= 0) {
printf("ERROR: padstep should at least be 0 and should not be larger than padsize\n");
return 1;
}
}
else if(!strcmp(ch, "-ds")) {
dotstep = atoi(*argv++);
if(dotstep <= 0) {
printf("ERROR: dotstep should be a positive integer\n");
return 1;
}
}
else {
printf("ERROR: no such option: %s\n", ch);
return print_help(name);
}
}
}
/* initialize */
if( (win = initscr()) == NULL) {
fprintf(stderr, "ERROR: Can't initialize ncurses\n");
return(1);
}
cbreak(); /* imidiatly get input chars */
noecho(); /* don't print input chars */
keypad(stdscr, TRUE); /* also get other keys */
curs_set(0); /* hide cursor */
if(autosize)
getmaxyx(stdscr, winrows, wincols);
/* non-changable stuff */
padposL = padposR = ((winrows/2)-(padsize/2));
scoreL = scoreR = 0;
dotX = (wincols/2);
dotY = (winrows/2)-1;
direX = DI_RIGHT;
direY = DI_DOWN;
started = paused = 0;
mvaddstr(0, 0, "Initializing, please wait...");
refresh();
clear();
/* draw stuff */
drawframe();
drawpadels();
mvaddch(dotY, dotX, '0');
refresh();
/* get keyboard input */
int ch;
while(1) {
ch = getch();
switch(ch) {
case KEY_UP :
movepadel('r', 'u'); break;
case KEY_DOWN :
movepadel('r', 'd'); break;
case 'a' :
movepadel('l', 'u'); break;
case 'z' :
movepadel('l', 'd'); break;
case ' ' :
if(!started)
startgame();
else if(scored) {
scored = 0;
mvaddch(dotY, dotX, ' ');
dotX = (wincols/2);
dotY = (winrows/2)-1;
refresh();
} else if(!paused)
paused = 1;
else if(paused)
paused = 0;
break;
case 'q' :
goto end;
break;
}
}
/* cleanup */
end:
erase();
mvaddstr(0, 0, "Thank you for playing Yet Another pong game. :)\nPlease visit http://yorhel.nl/ when your bored...\n");
refresh();
delwin(win);
endwin();
refresh();
return 0;
}
void movepadel(char which, char direct) {
if(paused || scored || !started)
return;
int *pos = which == 'r' ? &padposR : &padposL;
*pos += direct == 'u' ? -1*padstep : padstep;
if(*pos < 2)
*pos = 2;
if(*pos > winrows-padsize-2)
*pos = winrows-padsize-2;
drawpadels();
move(wincols-1, 0);
refresh();
}
void startgame() {
struct itimerval t;
t.it_interval.tv_sec = t.it_value.tv_sec = 0;
t.it_interval.tv_usec = t.it_value.tv_usec = delay;
setitimer(ITIMER_REAL, &t, NULL);
struct sigaction s;
s.sa_handler = movedot;
s.sa_flags = 0;
sigemptyset(&s.sa_mask);
sigaction(SIGALRM, &s, NULL);
started = 1;
}
void drawframe() {
mvaddstr(0, 3, "left");
mvaddstr(0, wincols-8, "right");
mvaddstr(0, ((wincols/2)-7), "YAPong by //YorHel");
move(1, 0);
hline(ACS_HLINE, wincols);
move(winrows-1, 0);
hline(ACS_HLINE, wincols);
updatescore();
}
void updatescore() {
char scl[3], scr[3];
sprintf(scl, "%02d", scoreL);
sprintf(scr, "%02d", scoreR);
mvaddstr(0, 0, scl);
mvaddstr(0, wincols-2, scr);
}
void drawpadels() {
int c;
for(c=winrows; c--; ) {
if(c < 2 || c >= winrows-1)
continue;
/* left paddel */
if(c >= padposL && c <= padposL+padsize)
mvaddch(c, 0, ' ' | A_REVERSE);
else
mvaddch(c, 0, ' ');
/* right paddel */
if(c >= padposR && c <= padposR+padsize)
mvaddch(c, wincols-1, ' ' | A_REVERSE);
else
mvaddch(c, wincols-1, ' ');
}
}
/* called from signal */
void movedot(int signal) {
if(signal != SIGALRM || !started || paused || scored)
return;
mvaddch(dotY, dotX, ' ');
dotX += direX == DI_LEFT ? -1*dotstep : dotstep;
dotY += direY == DI_UP ? -1*dotstep : dotstep;
if(direY == DI_UP && dotY <= 2) {
direY = DI_DOWN;
dotY = 2;
}
if(direY == DI_DOWN && dotY >= winrows-2) {
direY = DI_UP;
dotY = winrows-2;
}
if(direX == DI_RIGHT && dotX >= wincols-2) {
direX = DI_LEFT;
dotX = wincols-2;
if(dotY < padposR || dotY > padposR + padsize) {
scored = 1;
scoreL++;
direX = DI_LEFT;
updatescore();
}
}
if(direX == DI_LEFT && dotX <= 1) {
direX = DI_RIGHT;
dotX = 1;
if(dotY < padposL || dotY > padposL + padsize) {
scored = 1;
scoreR++;
direX = DI_RIGHT;
updatescore();
}
}
mvaddch(dotY, dotX, '0');
move(wincols-1, 0);
refresh();
}
int print_help(char *name) {
printf("Usage: %s [options]\n\n", name);
printf("Options:\n");
printf(" -h This help message.\n");
printf(" -d int Specifies the interval between every move\n");
printf(" of the dot. You can speed up the game by\n");
printf(" setting this to a lower value.\n");
printf(" -p int Specifies the size of each padel in pixels\n");
printf(" -s x y Specifies the size of the window, or set\n");
printf(" to 'auto' to use the size of your current\n");
printf(" terminal. Recommended and default size is\n");
printf(" 80x25.\n");
printf(" -ps int Specifies the amount of pixels the padels\n");
printf(" move each time\n");
printf(" -ds int The amount of pixels the dot moves each\n");
printf(" time, setting this to a larger value\n");
printf(" increases game speed a lot.\n");
printf(" -l level The game-level, higher levels are more\n");
printf(" difficult. See below for more information\n\n");
printf("Levels:\n");
printf(" option equals to\n");
printf(" -l 1 -d 100 -p 6 -ps 2 -ds 1\n");
printf(" -l 2 -d 80 -p 6 -ps 2 -ds 1\n");
printf(" -l 3 -d 65 -p 5 -ps 1 -ds 1\n");
printf(" -l 4 -d 50 -p 3 -ps 1 -ds 1\n");
printf(" -l 5 -d 80 -p 3 -ps 1 -ds 2\n");
printf(" Please note that all the levels are meant for a 80x25\n");
printf(" window size, level 5 might be very easy with a higher\n");
printf(" window size. In that case you should change the\n");
printf(" the options yourself.\n\n");
printf("Ingame keys:\n");
printf(" space Start/pause/resume game\n");
printf(" key_up Move right padel up\n");
printf(" key_down Move right padel down\n");
printf(" a Move left padel up\n");
printf(" z Move left padel down\n");
printf(" q Quit game\n");
return 0;
}
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