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/*
#
# File : tron.cpp
# ( C++ source file )
#
# Description : A clone of the famous (and very simple) Tron game.
# This file is a part of the CImg Library project.
# ( http://cimg.eu )
#
# Copyright : David Tschumperlé
# ( http://tschumperle.users.greyc.fr/ )
#
# License : CeCILL v2.0
# ( http://www.cecill.info/licences/Licence_CeCILL_V2-en.html )
#
# This software is governed by the CeCILL license under French law and
# abiding by the rules of distribution of free software. You can use,
# modify and/ or redistribute the software under the terms of the CeCILL
# license as circulated by CEA, CNRS and INRIA at the following URL
# "http://www.cecill.info".
#
# As a counterpart to the access to the source code and rights to copy,
# modify and redistribute granted by the license, users are provided only
# with a limited warranty and the software's author, the holder of the
# economic rights, and the successive licensors have only limited
# liability.
#
# In this respect, the user's attention is drawn to the risks associated
# with loading, using, modifying and/or developing or reproducing the
# software by the user in light of its specific status of free software,
# that may mean that it is complicated to manipulate, and that also
# therefore means that it is reserved for developers and experienced
# professionals having in-depth computer knowledge. Users are therefore
# encouraged to load and test the software's suitability as regards their
# requirements in conditions enabling the security of their systems and/or
# data to be ensured and, more generally, to use and operate it in the
# same conditions as regards security.
#
# The fact that you are presently reading this means that you have had
# knowledge of the CeCILL license and that you accept its terms.
#
*/
#include "CImg.h"
using namespace cimg_library;
// Main procedure
//----------------
int main(int argc, char **argv) {
// Print usage, help and retrieve command line options
//-----------------------------------------------------
cimg_usage("A very simple Tron game, using the CImg Library");
cimg_help("--- Quick help ----------------------------\n"
" Player 1 (blue) :\n"
" Use keys 'Z' (up), 'S' (down), 'Q' (left)\n"
" and 'D' (right) to control your player.\n"
" Right 'CONTROL' key enables turbospeed\n"
" Player 2 (red) : \n"
" Use arrow keys to control your player.\n"
" 'TAB' key enables turbospeed.\n"
"-------------------------------------------");
const char *geom = cimg_option("-g","300x300","Size of the game board");
const int delay = cimg_option("-s",10,"Game speed (lower value means faster)");
const bool twoplayers = !cimg_option("-1",false,"One player only");
const int zoom = cimg_option("-z",1,"Zoom factor");
const bool full = cimg_option("-f",false,"Fullscreen mode");
unsigned int W = 400, H = 400;
std::sscanf(geom,"%u%*c%u",&W,&H);
// Define game colors and variables
//----------------------------------
const unsigned char blue[] = { 128,200,255}, red[] = { 255,0,0 }, white[] = { 255,255,255 };
int score1 = 0, score2 = 0, round_over = 0, ix1 = -1, iy1 = -1, x1 = 0, y1 = 0, u1 = 0, v1 = 0,
ix2 = -1, iy2 = -1, x2 = 0, y2 = 0, u2 = 0, v2 = 0;
bool start_round = true, turbo1 = false, turbo2 = false;
// Create background image
//--------------------------
CImg<unsigned char> background, img;
background.assign(64,64,1,3,0).noise(60).draw_plasma().resize(W,H).blur(2).normalize(0,128).
draw_rectangle(0,0,W-1,H-1,white,1.0f,~0U);
// Open display window
//---------------------
CImgDisplay disp(background,"* CImg-Tron *");
if (zoom>1) disp.resize(-100*zoom,-100*zoom);
if (full) disp.toggle_fullscreen().display(background);
// Start main game loop
//----------------------
while (!disp.is_closed() && !disp.is_keyESC()) {
// Init new game round if necessary
//----------------------------------
if (start_round) {
// Init game variables
round_over = 0;
ix1 = -1; iy1 = -1; x1 = 10; y1 = 10; u1 = 1; v1 = 0; turbo1 = false;
ix2 = -1; iy2 = -1; x2 = W - 11; y2 = H - 11; u2 = -1; v2 = 0; turbo2 = false;
img = background;
start_round = false;
// Display a simple pre-round page
CImg<unsigned char> logo, pressakey;
logo.draw_text(0,0," CImg-Tron ",white,0,1,33).resize(-100,-100,1,3);
CImg<unsigned char> tmp = (+background).draw_image((W - logo.width())/2,(H - logo.height())/2 - 20,
logo,logo.get_channel(0).dilate(6).normalize(0,1)).
draw_text(W/2 - 60,H/2 + 10,"Blue ( %u )",blue,0,1,13,score1).
draw_text(W/2 + 10,H/2 + 10,"Red ( %u )",red,0,1,13,score2);
pressakey.draw_text(0,0,"* Press a key to start round *",white);
for (float i = 0; i<1; i+=0.05f) ((+tmp)*=i).display(disp.wait(20));
disp.flush();
for (unsigned long t = 0; !disp.key() && !disp.is_closed(); ++t) {
if (!(t%10)) { if (t%20) disp.display(tmp);
else disp.display((+tmp).draw_image(W/2 - 70,H/2 + 50,pressakey,pressakey,1,255)); }
if (disp.wait(20).is_resized()) disp.resize(disp);
}
if (disp.is_keyESC()) disp.flush();
}
// Test collision between players and borders
if (x1<0 || x1>=img.width() || y1<0 || y1>=img.height() ||
img(x1,y1,0)!=background(x1,y1,0) ||
img(x1,y1,1)!=background(x1,y1,1) ||
img(x1,y1,2)!=background(x1,y1,2) ||
((ix1>=0 || iy1>=0) && (img(ix1,iy1,0)!=background(ix1,iy1,0) || // Collision test for turbo mode
img(ix1,iy1,1)!=background(ix1,iy1,1) ||
img(ix1,iy1,2)!=background(ix1,iy1,2)))) { round_over=1; score2++; }
if (twoplayers) {
if (x2<0 || x2>=img.width() || y2<0 || y2>=img.height() ||
img(x2,y2,0)!=background(x2,y2,0) ||
img(x2,y2,1)!=background(x2,y2,1) ||
img(x2,y2,2)!=background(x2,y2,2) ||
((ix2>=0 || iy2>=0) && (img(ix2,iy2,0)!=background(ix2,iy2,0) || // Collision test for turbo mode
img(ix2,iy2,1)!=background(ix2,iy2,1) ||
img(ix2,iy2,2)!=background(ix2,iy2,2)))) { round_over=2; score1++; }
}
// Draw new players positions
img.draw_point(x1,y1,blue);
if (ix1>=0 && iy1>=0) img.draw_point(ix1,iy1,blue);
if (twoplayers) {
img.draw_point(x2,y2,red);
if (ix2>=0 && iy2>=0) img.draw_point(ix2,iy2,red);
}
if (disp.is_resized()) disp.resize(disp);
img.display(disp);
// Update players positions
x1+=u1; y1+=v1;
if (turbo1) { ix1 = x1; iy1 = y1; x1+=u1; y1+=v1; } else { ix1 = iy1 = -1; }
if (twoplayers) {
x2+=u2; y2+=v2;
if (turbo2) { ix2 = x2; iy2 = y2; x2+=u2; y2+=v2; } else { ix2 = iy2 = -1; }
}
// Test keyboard events
int nu1 = u1, nv1 = v1, nu2 = u2, nv2 = v2;
if (disp.is_keyARROWLEFT()) { nu1 = -1; nv1 = 0; }
if (disp.is_keyARROWRIGHT()) { nu1 = 1; nv1 = 0; }
if (disp.is_keyARROWUP()) { nu1 = 0; nv1 = -1; }
if (disp.is_keyARROWDOWN()) { nu1 = 0; nv1 = 1; }
turbo1 = disp.is_keyCTRLRIGHT();
if (twoplayers) {
if (disp.is_keyQ()) { nu2 = -1; nv2 = 0; }
if (disp.is_keyD()) { nu2 = 1; nv2 = 0; }
if (disp.is_keyZ()) { nu2 = 0; nv2 = -1; }
if (disp.is_keyS()) { nu2 = 0; nv2 = 1; }
turbo2 = disp.is_keyTAB();
}
if (nu1!=-u1 && nv1!=-v1) { u1 = nu1; v1 = nv1; }
if (nu2!=-u2 && nv2!=-v2) { u2 = nu2; v2 = nv2; }
// Check if round is over.
if (round_over) {
const int xc = round_over==1?x1:x2, yc = round_over==1?y1:y2;
for (int r=0; r<50; r+=3) img.draw_circle(xc,yc,r,round_over==1?blue:red,r/300.0f).display(disp.wait(20));
for (int rr=0; rr<50; rr+=3)
((+img)*=(50 - rr)/50.0f).draw_circle(xc,yc,(50 + rr),round_over==1?blue:red,1/6.0f).display(disp.wait(20));
start_round = true;
}
// Wait a small amount of time
disp.wait(delay);
}
return 0;
}
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