From 12169019447f2d583a67010db8efb6f06820d76e Mon Sep 17 00:00:00 2001
From: Alexander Kauerz <kauerz@informatik.uni-luebeck.de>
Date: Thu, 9 Feb 2012 23:03:40 +0100
Subject: lolshield

---
 LoLShield/Examples/Life/Life.pde | 120 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 120 insertions(+)
 create mode 100644 LoLShield/Examples/Life/Life.pde

(limited to 'LoLShield/Examples/Life/Life.pde')

diff --git a/LoLShield/Examples/Life/Life.pde b/LoLShield/Examples/Life/Life.pde
new file mode 100644
index 0000000..02d4b7e
--- /dev/null
+++ b/LoLShield/Examples/Life/Life.pde
@@ -0,0 +1,120 @@
+/*
+ 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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