You'll have to make a custom explosion script to do so.
or...
You could just use a bunch of '0' length explosions. I.e:
PHP Code:
//#CLIENTSIDE
function putexplosion3(pow, w, h, tx, ty) {
for (temp.i = -w; temp.i <= w; temp.i++) {
putexplosion2(pow, 0, tx + temp.i, ty);
}
for (temp.i = -h; temp.i <= h; temp.i++) {
putexplosion2(pow, 0, tx, ty + temp.i);
}
}
Looks hackish/ugly though.