diff --git a/src/lib.rs b/src/lib.rs
index c14017d..36f7614 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -165,6 +165,110 @@ impl Universe {
let idx = self.get_index(row, col);
self.cells[idx].toggle();
}
+
+ pub fn kill_all(&mut self) {
+ self.cells.iter_mut().for_each(|cell| *cell = Cell::Dead);
+ }
+
+ pub fn glider(&mut self, row: u32, col: u32) {
+ let glider_grid = [
+ Cell::Dead,
+ Cell::Dead,
+ Cell::Alive,
+ Cell::Alive,
+ Cell::Dead,
+ Cell::Alive,
+ Cell::Dead,
+ Cell::Alive,
+ Cell::Alive,
+ ];
+ let glider_positions = [
+ (row - 1, col - 1),
+ (row, col - 1),
+ (row + 1, col - 1),
+ (row - 1, col),
+ (row, col - 1),
+ (row + 1, col),
+ (row - 1, col + 1),
+ (row, col + 1),
+ (row + 1, col + 1),
+ ];
+ glider_grid
+ .iter()
+ .zip(glider_positions)
+ .for_each(|(state, (row, col))| {
+ let idx = self.get_index(row, col);
+ self.cells[idx] = *state;
+ });
+ }
+
+ pub fn pulsar(&mut self, row: u32, col: u32) {
+ let pulsar_grid = [
+ Cell::Alive,
+ Cell::Alive,
+ Cell::Alive,
+ Cell::Dead,
+ Cell::Dead,
+ Cell::Dead,
+ Cell::Alive,
+ Cell::Alive,
+ Cell::Alive,
+ Cell::Alive,
+ Cell::Dead,
+ Cell::Alive,
+ Cell::Dead,
+ Cell::Dead,
+ Cell::Dead,
+ Cell::Alive,
+ Cell::Dead,
+ Cell::Alive,
+ Cell::Alive,
+ Cell::Alive,
+ Cell::Alive,
+ Cell::Dead,
+ Cell::Dead,
+ Cell::Dead,
+ Cell::Alive,
+ Cell::Alive,
+ Cell::Alive,
+ ];
+ let pulsar_positions = [
+ (row - 4, col - 1),
+ (row - 3, col - 1),
+ (row - 2, col - 1),
+ (row - 1, col - 1),
+ (row, col - 1),
+ (row + 1, col - 1),
+ (row + 2, col - 1),
+ (row + 3, col - 1),
+ (row + 4, col - 1),
+ (row - 4, col),
+ (row - 3, col),
+ (row - 2, col),
+ (row - 1, col),
+ (row, col),
+ (row + 1, col),
+ (row + 2, col),
+ (row + 3, col),
+ (row + 4, col),
+ (row - 4, col + 1),
+ (row - 3, col + 1),
+ (row - 2, col + 1),
+ (row - 1, col + 1),
+ (row, col + 1),
+ (row + 1, col + 1),
+ (row + 2, col + 1),
+ (row + 3, col + 1),
+ (row + 4, col + 1),
+ ];
+ pulsar_grid
+ .iter()
+ .zip(pulsar_positions)
+ .for_each(|(state, (row, col))| {
+ let idx = self.get_index(row, col);
+ self.cells[idx] = *state;
+ });
+ }
}
impl Universe {
diff --git a/www/index.html b/www/index.html
index c287893..9401bf4 100644
--- a/www/index.html
+++ b/www/index.html
@@ -23,6 +23,7 @@
+
diff --git a/www/index.js b/www/index.js
index d7cb343..a8a08a2 100644
--- a/www/index.js
+++ b/www/index.js
@@ -28,7 +28,13 @@ canvas.addEventListener("mousedown", event => {
const row = Math.min(Math.floor(canvasTop / (CELL_SIZE + 1)), height - 1);
const col = Math.min(Math.floor(canvasLeft / (CELL_SIZE + 1)), width - 1);
- universe.toggle_cell(row, col);
+ if (event.ctrlKey) {
+ universe.glider(row, col);
+ } else if (event.shiftKey) {
+ universe.pulsar(row, col);
+ } else {
+ universe.toggle_cell(row, col);
+ }
drawGrid();
drawCells();
@@ -38,6 +44,12 @@ const ctx = canvas.getContext('2d');
const playPauseButton = document.getElementById("play-pause");
+const reset = document.getElementById("reset");
+
+reset.addEventListener("click", event => {
+ universe.kill_all();
+});
+
const drawGrid = () => {
ctx.beginPath();
ctx.strokeStyle = GRID_COLOR;