SandGame/actions.js

import { grid, currentFrame } from './state.js';

export function move(x1, y1, x2, y2) {
    grid[x2][y2] = grid[x1][y1];
    grid[x1][y1] = null;
    if (grid[x2][y2]) grid[x2][y2].lastUpdated = currentFrame;
}

export function swap(x1, y1, x2, y2) {
    const temp = grid[x1][y1];
    grid[x1][y1] = grid[x2][y2];
    grid[x2][y2] = temp;
    if (grid[x1][y1]) grid[x1][y1].lastUpdated = currentFrame;
    if (grid[x2][y2]) grid[x2][y2].lastUpdated = currentFrame;
}