Algodoo

this was a coding nightmare but I am very pleased with the results. not TOO much lag on MY pc (YMMV), DO NOT change the sim frequency or drop this into a scene with a frame rate different than 60, it WILL freeze algodoo.

everything is automatic, uses a reflected laser to determine proper burst height. laser properties and the script window are left open for you to change or look at as you see fit (I wouldn't recommend dropping the slider below 500 or it gets laggy with all the dust particles it produces)

return/enter key manually detonates, but this bomb was designed to auto-detonate at a pre-determined altitude. could be used on a munition if you'd like but I kept it simple

bomb detonates and immediately produces a large fireball about 100m is diameter. a shock front follows which stirs up dust particles and flattens or damages nearby structures up to a kilometer or two away, falling off in intensity with an inverse square function of the distance from ground zero. very realistic fireball/mushroom cloud, blast is convincing as it rolls over the ground, and the flash is pretty nice too. included is a small test town with an assortment of different building types from simple houses to concrete multistory buildings reinforced with steel supports.

my best nuke yet, it's no slouch in the visuals or destructive capability.