gulpfile.js

const gulp = require('gulp');
const changed = require('gulp-changed');

gulp.task('copy-assets', () => {
	// Copy the Character sprites
	gulp.src('./game/assets/sprites/characters/*.*')
		.pipe(changed('dist/assets/sprites/characters'))
		.pipe(gulp.dest('dist/assets/sprites/characters'));
	// Copy the tile maps
	gulp.src('./game/assets/tilemaps/*.*')
		.pipe(changed('dist/assets/tilemaps'))
		.pipe(gulp.dest('dist/assets/tilemaps'));
	// Copy the tilesets (pngs)
	gulp.src('./game/assets/tilesets/*.*')
		.pipe(changed('dist/assets/tilesets'))
		.pipe(gulp.dest('dist/assets/tilesets'));
	// Copy the audio
	gulp.src('./game/assets/music/*.*')
		.pipe(changed('dist/assets/music'))
		.pipe(gulp.dest('dist/assets/music'));

	gulp.src('./game/assets/items/*.*')
		.pipe(changed('dist/assets/items'))
		.pipe(gulp.dest('dist/assets/items'));

	// Copy everything else in the asset directory
	return gulp
		.src('./game/assets/*.*')
		.pipe(changed('dist/assets'))
		.pipe(gulp.dest('dist/assets'));
});