explosion on impact spell

[X-Angel]

May someone help me on a spell where the hero casts a spell, it sends out a <projectile> and the first unit the <projectile> hits the <projectile> will explode, dealing aoe damage, and if the <projectile> doesn't meet an enemy unit, it will explode when it reaches its maximum distance

 

[Metov]

you would have to use a dummy unit as the projectile, and move it forward periodically (use a timer). every instance check if its within X range of a unit, and if it is... BOOM.

 

[GhostWolf]

I think it would be better to check pathability then making groups all the time.