104 lines
2.2 KiB
Java
104 lines
2.2 KiB
Java
public class Life implements ILife {
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private int width;
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private int height;
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private boolean[][] grid;
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public static void main(String[] args) {
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Life l = new Life(new String[]{
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" ",
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" ",
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" *** ",
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" ",
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" "
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});
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l = (Life) l.nextGeneration();
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}
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public Life() {
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this.width = 5;
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this.height = 5;
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this.grid = new boolean[width][height];
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nukeAll();
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}
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public Life(String[] setup) {
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this.height = setup.length;
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this.width = setup[0].length();
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this.grid = new boolean[width][height];
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for (int y = 0; y < height; y++) {
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for (int x = 0; x < width; x++) {
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if (setup[y].charAt(x) == '*') {
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setAlive(x, y);
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}
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}
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}
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}
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@Override
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public void nukeAll() {
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for (int y = 0; y < height; y++) {
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for (int x = 0; x < width; x++) {
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grid[x][y] = false;
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}
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}
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}
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@Override
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public void setAlive(int x, int y) {
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if (isInBounds(x, y)) {
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grid[x][y] = true;
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}
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}
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@Override
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public void setDead(int x, int y) {
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}
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@Override
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public boolean isAlive(int x, int y) {
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return isInBounds(x, y) && grid[x][y];
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}
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@Override
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public ILife nextGeneration() {
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Life newLife = new Life();
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newLife.width = this.width;
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newLife.height = this.height;
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newLife.grid = new boolean[width][height];
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for (int y = 0; y < height; y++) {
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for (int x = 0; x < width; x++) {
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int neighbors = countAliveNeighbors(x, y);
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if (isAlive(x, y)) {
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if (neighbors < 2 || neighbors > 3) {
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newLife.setDead(x, y);
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} else {
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newLife.setAlive(x, y);
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}
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} else {
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if (neighbors == 3) {
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newLife.setAlive(x, y);
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}
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}
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}
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}
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return newLife;
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}
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private int countAliveNeighbors(int x, int y) {
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int count = 0;
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for (int dy = -1; dy <= 1; dy++) {
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for (int dx = -1; dx <= 1; dx++) {
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if (dx == 0 && dy == 0) continue;
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if (isAlive(x + dx, y + dy)) count++;
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}
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}
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return count;
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}
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private boolean isInBounds(int x, int y) {
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return x >= 0 && x < width && y >= 0 && y < height;
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}
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} |