Water surface explosions

#1 Look at the crossbow.cs

and in the projectile datablock:
splash = CrossbowSplash;


However I remember noticing that if you have a projectile that travels very quickly is that it won't always show the splash.

But a slower moving one such as the crossbow will reproduce it each time, also the depth of water is important for this effect.

#2 If you absolutely must have accurate bullet splashes, I recommend bypassing the standard projectile setup and simply casting rays in the bullet's vector. If you hit water, do the splash at that location and continue the raycast from that point. Note that most real bullets don't survive the impact with water, and will only be harmful for a few feet beyond the point of impact.

32ms is far too long to catch a realistic bullet-speed projectile hitting the water's surface. Hitting an object works fine because it accurately catches the point of impact using raycasts, but projectiles don't actually collide with the water.

#3 Thanks Henry, I knew I could do it that way and now have, I was just hoping there was already something in script that would have done it properly.

#4 Actually looks like the code works perfectly. I spent a few minutes exploring the idea that it was a resolution issue caused by the high projectile speed, but projectile::emitParticles does all the correct raycasting stuff. When I was putting some debug console output I noticed that splashes only get set off if your projectile has both a "particleEmitter" and "particleWaterEmitter." Since you generally blank out the projectile's emitter for bullets, the splashes never happen.

Anyway, just put in a blank particle emitter/water emitter, ie ones that never make any particles, and the splashes should work fine.

There may have been an unrelated bug in older versions of TGE which did cause velocity-related splash misses, but I don't have a copy of 1.3 anymore to compare. Severe network overflow will still cause splashes and other projectile effects to not appear as projectiles won't be ghosting correctly at all.