362 lines
8.9 KiB
C
362 lines
8.9 KiB
C
#include <stdio.h>
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#include <unistd.h>
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#include "SDL.h"
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#include <math.h>
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/*
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DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
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Version 2, December 2004
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Copyright (C) 2004 Sam Hocevar <sam@hocevar.net>
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Everyone is permitted to copy and distribute verbatim or modified
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copies of this license document, and changing it is allowed as long
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as the name is changed.
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DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
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TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
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0. You just DO WHAT THE FUCK YOU WANT TO.
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*/
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/// /// /// /// /// /// /// /// /// /// /// /// /// /// /// /// /// /// ///
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/// COMPILING (SDL and SDL-dev or -devel librairies needed: ///
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/// $ gcc `sdl-config --cflags --libs` glisseur_10.c -o glisseur_10 ///
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/// ///
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/// RUNING: ///
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/// $ ./sdl-glisseur_10 ///
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/// ///
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/// STOPING: ///
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/// $ top ---> get PID of the glider proccess ///
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/// $ kill -9 PID ///
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/// /// /// /// /// /// /// /// /// /// /// /// /// /// /// /// /// /// ///
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#define WIDTH 640
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#define HEIGHT 480
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Uint32 getpixel(SDL_Surface *surface,int x,int y)
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{
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int bpp = surface->format->BytesPerPixel;
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/* Here p is the address to the pixel we want to retrieve */
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Uint8 *p = (Uint8 *)surface->pixels + y * surface->pitch + x * bpp;
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switch(bpp) {
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case 1:
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return *p;
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case 2:
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return *(Uint16 *)p;
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case 3:
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if(SDL_BYTEORDER == SDL_BIG_ENDIAN)
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return p[0] << 16 | p[1] << 8 | p[2];
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else
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return p[0] | p[1] << 8 | p[2] << 16;
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case 4:
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return *(Uint32 *)p;
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default:
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return 0; /* shouldn't happen, but avoids warnings */
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}
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}
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void putPixel(SDL_Surface * surface, Uint16 x, Uint16 y, Uint32 color)
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{
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/* Nombre de bits par pixels de la surface d'ecran */
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Uint8 bpp = surface->format->BytesPerPixel;
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/* Pointeur vers le pixel a remplacer (pitch correspond a la taille
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d'une ligne d'ecran, c'est a dire (longueur * bitsParPixel)
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pour la plupart des cas) */
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Uint8 * p = ((Uint8 *)surface->pixels) + y * surface->pitch + x * bpp;
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switch(bpp)
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{
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case 1:
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*p = (Uint8) color;
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break;
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case 2:
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*(Uint16 *)p = (Uint16) color;
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break;
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case 3:
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if (SDL_BYTEORDER == SDL_BIG_ENDIAN)
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{
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*(Uint16 *)p = ((color >> 8) & 0xff00) | ((color >> 8) & 0xff);
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*(p + 2) = color & 0xff;
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}
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else
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{
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*(Uint16 *)p = color & 0xffff;
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*(p + 2) = ((color >> 16) & 0xff) ;
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}
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break;
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case 4:
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*(Uint32 *)p = color;
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break;
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}
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}
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int main(int argc, char * argv[])
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{
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SDL_Surface * screen;
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// SDL_Surface * image, * tmp;
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SDL_Rect blitrect = {0, 0, 0, 0};
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int i, j;
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int n, direction, couleur, new_couleur;
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unsigned char r,g,b;
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int nr, ng, nb;
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if (SDL_Init(SDL_INIT_VIDEO) == -1)
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{
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printf("Erreur lors de l'initialisation de SDL: %s\n", SDL_GetError());
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return 1;
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}
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#define SDL_VIDEO_FLAGS (SDL_HWSURFACE | SDL_DOUBLEBUF | SDL_ANYFORMAT)
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//screen = SDL_SetVideoMode(640, 480, 24, SDL_VIDEO_FLAGS);
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screen = SDL_SetVideoMode(WIDTH, HEIGHT, 24, SDL_VIDEO_FLAGS);
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// screen = SDL_SetVideoMode(270, 16, 24, SDL_VIDEO_FLAGS);
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printf("Mode video: %dx%dx%d\n", screen->w, screen->h,
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screen->format->BitsPerPixel);
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//SDL_FillRect(screen, NULL, SDL_MapRGB(screen->format, 0xff, 0xff, 0xff));
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SDL_FillRect(screen, NULL, SDL_MapRGB(screen->format, 254, 254, 254));
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//i=320;
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//j=240;
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i = floor(WIDTH / 2);
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j = floor(HEIGHT / 2);
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direction=1;
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//for (j = 0; j < screen->h; j++) {
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//for (i = 0; i < screen->w; i++) {
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// for (n = 0; n < 2000; n++) {
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while (0!=1) {
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//SDL_LockSurface(screen);
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//r=0;
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//GetPixelColor(screen,i,j,r,g,b);
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//r=getpixel(screen,i,j);
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SDL_GetRGB(getpixel(screen,i,j),screen->format,&r,&g,&b);
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//printf("direction=%i - ",direction);
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/* printf("n=%i - ",n);
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printf("i=%i - ",i);
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printf("j=%i - ",j);
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printf("r=%i - ",r);
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printf("g=%i - ",g);
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printf("b=%i - ",b);
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*/
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if ((r==254) && (g==254) && (b==254))
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couleur=0;
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else if (r==254 && g==0 && b==0)
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couleur=1;
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else if (r==0 && g==254 && b==0)
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couleur=2;
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else if (r==0 && g==0 && b==254)
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couleur=3;
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// printf("couleur=%i - ",couleur);
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//printf("direction=%i - ",direction);
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/// /// /// /// /// /// /// /// /// /// /// /// /// ///
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/// for different gliders ///
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/// on each 4 following cases ///
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/// change new_couleur from 0 to 3 ///
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/// change direction from direction+0 to direction+3 ///
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// /// /// /// /// /// /// /// /// /// /// /// /// ///
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/// ///
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/// examples: ///
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/// ///
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/// --- 1: geometric shape: ///
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/// case 0: new_couleur=1 / direction=direction+3 ///
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/// case 1: new_couleur=2 / direction=direction+1 ///
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/// case 2: new_couleur=3 / direction=direction+1 ///
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/// case 3: new_couleur=0 / direction=direction+3 ///
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/// ///
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/// --- 2: center fractal with up down left right arms ///
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/// case 0: new_couleur=1 / direction=direction+3 ///
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/// case 1: new_couleur=2 / direction=direction+1 ///
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/// case 2: new_couleur=3 / direction=direction+1 ///
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/// case 3: new_couleur=0 / direction=direction+3 ///
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/// ///
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/// --- 2: center fractal then canon ///
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/// case 0: new_couleur=1 / direction=direction+2 ///
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/// case 1: new_couleur=2 / direction=direction+3 ///
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/// case 2: new_couleur=3 / direction=direction+2 ///
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/// case 3: new_couleur=0 / direction=direction+1 ///
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// /// /// /// /// /// /// /// /// /// /// /// /// ///
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/// --- 1: geometric shape: ///
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switch(couleur){
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case 0:
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new_couleur=1;
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direction=direction+3;
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break;
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case 1:
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new_couleur=2;
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direction=direction+1;
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break;
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case 2:
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new_couleur=3;
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direction=direction+1;
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break;
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case 3:
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new_couleur=0;
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direction=direction+3;
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break;
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}
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/// --- 2: center fractal with up down left right arms ///
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/*
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switch(couleur){
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case 0:
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new_couleur=1;
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direction=direction+1;
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break;
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case 1:
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new_couleur=2;
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direction=direction+1;
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break;
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case 2:
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new_couleur=3;
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direction=direction+1;
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break;
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case 3:
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new_couleur=0;
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direction=direction+2;
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break;
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}
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*/
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/// --- 3: center fractal then canon ///
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/*
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switch(couleur){
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case 0:
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new_couleur=1;
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direction=direction+2;
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break;
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case 1:
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new_couleur=2;
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direction=direction+3;
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break;
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case 2:
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new_couleur=3;
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direction=direction+2;
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break;
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case 3:
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new_couleur=0;
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direction=direction+1;
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break;
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}
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*/
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direction = direction % 4;
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// printf("direction=%i\n",direction);
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nr=0;
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ng=0;
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nb=0;
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//SDL_LockSurface(screen);
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switch(new_couleur){
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case 0:
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nr=254;
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ng=254;
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nb=254;
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break;
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case 1:
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nr=254;
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ng=0;
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nb=0;
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break;
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case 2:
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nr=0;
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ng=254;
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nb=0;
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break;
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case 3:
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nr=0;
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ng=0;
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nb=254;
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break;
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}
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putPixel(screen, i, j, SDL_MapRGB(screen->format, nr, ng, nb));
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//putPixel(screen, i, j, SDL_MapRGB(screen->format, 0xfe, 0, 0));
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// BORDER BOUNCE //
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switch(direction){
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case 0:
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j=j-1;
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if (j<0)
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//j=479;
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j = 0;
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break;
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case 1:
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i=i+1;
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//if (i>639)
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if ( i > ( WIDTH - 1 ) )
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//i=0;
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i = WIDTH -1;
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break;
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case 2:
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j=j+1;
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//if (j>479)
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if ( j > ( HEIGHT - 1 ) )
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//j=0;
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j = HEIGHT -1;
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break;
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case 3:
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i=i-1;
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if (i<0)
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//i=639;
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//i = WIDTH - 1;
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i = 0;
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break;
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direction = ( direction + 2 ) % 4;
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}
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// END - BORDER BOUNCE //
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// BORDER PASS THROUGH //
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/*
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switch(direction){
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case 0:
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j=j-1;
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if (j<0)
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//j=479;
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j = HEIGHT - 1;
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break;
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case 1:
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i=i+1;
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//if (i>639)
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if ( i > ( WIDTH - 1 ) )
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i=0;
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break;
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case 2:
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j=j+1;
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//if (j>479)
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if ( j > ( HEIGHT - 1 ) )
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j=0;
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break;
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case 3:
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i=i-1;
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if (i<0)
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//i=639;
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i = WIDTH - 1;
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break;
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}
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*/
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// END - BORDER PASS THROUGH //
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//SDL_UnlockSurface(screen);
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SDL_Flip(screen);
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}
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//}
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//sleep(5);
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SDL_Quit();
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return 0;
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}
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