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/*
Conway's "Life"
Writen for the LoL Shield, designed by Jimmie Rodgers:
http://jimmieprodgers.com/kits/lolshield/
This needs the Charliplexing library, which you can get at the
LoL Shield project page: http://code.google.com/p/lolshield/
Created by Jimmie Rodgers on 12/30/2009.
Adapted from: http://www.arduino.cc/playground/Main/DirectDriveLEDMatrix
History:
December 30, 2009 - V1.0 first version written at 26C3/Berlin
This is free software; you can redistribute it and/or
modify it under the terms of the GNU Version 3 General Public
License as published by the Free Software Foundation;
or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <Charliplexing.h> //Imports the library, which needs to be
//Initialized in setup.
#define DELAY 150 //Sets the time each generation is shown
#define RESEEDRATE 5000 //Sets the rate the world is re-seeded
#define SIZEX 14 //Sets the X axis size
#define SIZEY 9 //Sets the Y axis size
byte world[SIZEX][SIZEY][2]; //Creates a double buffer world
long density = 50; //Sets density % during seeding
int geck = 0; //Counter for re-seeding
void setup() {
LedSign::Init(); //Initilizes the LoL Shield
randomSeed(analogRead(5));
//Builds the world with an initial seed.
for (int i = 0; i < SIZEX; i++) {
for (int j = 0; j < SIZEY; j++) {
if (random(100) < density) {
world[i][j][0] = 1;
}
else {
world[i][j][0] = 0;
}
world[i][j][1] = 0;
}
}
}
void loop() {
// Birth and death cycle
for (int x = 0; x < SIZEX; x++) {
for (int y = 0; y < SIZEY; y++) {
// Default is for cell to stay the same
world[x][y][1] = world[x][y][0];
int count = neighbours(x, y);
geck++;
if (count == 3 && world[x][y][0] == 0) {
// A new cell is born
world[x][y][1] = 1;
LedSign::Set(x,y,1);
}
else if ((count < 2 || count > 3) && world[x][y][0] == 1) {
// Cell dies
world[x][y][1] = 0;
LedSign::Set(x,y,0);
}
}
}
//Counts and then checks for re-seeding
//Otherwise the display will die out at some point
geck++;
if (geck > RESEEDRATE){
seedWorld();
geck = 0;
}
// Copy next generation into place
for (int x = 0; x < SIZEX; x++) {
for (int y = 0; y < SIZEY; y++) {
world[x][y][0] = world[x][y][1];
}
}
delay(DELAY);
}
//Re-seeds based off of RESEEDRATE
void seedWorld(){
randomSeed(analogRead(5));
for (int i = 0; i < SIZEX; i++) {
for (int j = 0; j < SIZEY; j++) {
if (random(100) < density) {
world[i][j][1] = 1;
}
}
}
}
//Runs the rule checks, including screen wrap
int neighbours(int x, int y) {
return world[(x + 1) % SIZEX][y][0] +
world[x][(y + 1) % SIZEY][0] +
world[(x + SIZEX - 1) % SIZEX][y][0] +
world[x][(y + SIZEY - 1) % SIZEY][0] +
world[(x + 1) % SIZEX][(y + 1) % SIZEY][0] +
world[(x + SIZEX - 1) % SIZEX][(y + 1) % SIZEY][0] +
world[(x + SIZEX - 1) % SIZEX][(y + SIZEY - 1) % SIZEY][0] +
world[(x + 1) % SIZEX][(y + SIZEY - 1) % SIZEY][0];
}
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