lambdaway :: conway

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_h1 conway's life game | [[life]]

_p Following [[https://codepen.io/RBSpatz/pen/rLyNLb|https://codepen.io/RBSpatz/pen/rLyNLb]] and [[life-patterns-in-15-gliders|https://btm.qva.mybluehost.me/building-arbitrary-life-patterns-in-15-gliders/]].
 
_h2 rules
_ul set some cells in the grid
_ul Any live cell with fewer than two live neighbours dies, as if caused by under-population.
_ul Any live cell with two or three live neighbours lives on to the next generation.
_ul Any live cell with more than three live neighbours dies, as if by overcrowding.
_ul Any dead cell with exactly three live neighbours becomes a live cell, as if by reproduction.

{center
 {input {@ id="start" type="button" value="Start" onclick="startButtonHandler()"}}
 {input {@ id="clear" type="button" value="Clear" onclick="clearButtonHandler()"}}
 {input {@ id="random" type="button" value="Random" onclick="randomButtonHandler()"}}
 {div {@ id="gridContainer"}}
}
    
_p See also [[life|http://lambdaway.free.fr/lambdaspeech/index.php?view=life]] and [[15 gliders|https://btm.qva.mybluehost.me/building-arbitrary-life-patterns-in-15-gliders/]]
_p See also [[liquid simulation|http://www.jgallant.com/2d-liquid-simulator-with-cellular-automaton-in-unity/]] using automata.
_p VIideos:
_ul [[arte/video|https://www.arte.tv/fr/videos/097454-008-A/voyages-au-pays-des-maths/]]
_ul [[life in life|https://youtu.be/xP5-iIeKXE8]]
_ul [[life in life 2|https://youtu.be/Kk2MH9O4pXY]]

{pre
.    ooo
     o o
     o o
      o
   o ooo
    o o o
      o  o
     o o
     o o
}

{script ;;

var rows     = 40, 
    cols     = 40,
    playing  = false,
    grid     = new Array(rows),
    nextGrid = new Array(rows),
    timer,
    reproductionTime = 100;

// Initialize
function initialize() {
    createTable();
    initializeGrids();
    resetGrids();
}

function initializeGrids() {
    for (var i = 0; i < rows; i++) {
        grid[i] = new Array(cols);
        nextGrid[i] = new Array(cols);
    }
}

function resetGrids() {
    for (var i = 0; i < rows; i++) {
        for (var j = 0; j < cols; j++) {
            grid[i][j] = 0;
            nextGrid[i][j] = 0;
        }
    }
}

function play() {
    computeNextGen();
    if (playing) {
        timer = setTimeout(play, reproductionTime);
    }
}

function copyAndResetGrid() {
    for (var i = 0; i < rows; i++) {
        for (var j = 0; j < cols; j++) {
            grid[i][j] = nextGrid[i][j];
            nextGrid[i][j] = 0;
        }
    }
}

// RULES
// Any live cell with fewer than two live neighbours dies, as if caused by under-population.
// Any live cell with two or three live neighbours lives on to the next generation.
// Any live cell with more than three live neighbours dies, as if by overcrowding.
// Any dead cell with exactly three live neighbours becomes a live cell, as if by reproduction.

// Start everything
 setTimeout( initialize, 1 )

}

{style ;;
#gridContainer { padding-bottom: 0px; }
table { background-color: #fff; border-spacing: 0; }
td { border: 1px solid #ccc; border-radius: 10px; width: 10px; height: 10px; }
td.dead { background-color: transparent; }
td.live { background-color: #f00; border-radius: 10px; }
}