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How do I make the projectile balls behave like actual balls?


I'm having a hard time modifying the FPS blueprint template. My goal was to make the balls bounce instead of disappearing after hitting an object. I deleted a segment out of the projectile Blueprint and it did it's job. Then I had the problem, that the balls stop rapidly after loosing enough spped, and when they do, no force is able to move them - nor the player, nor other projectiles. After following the instruction of an answer on this site, I was able fixed that. I just had to change the collision type from ,,pojectile" to ,,physical actor" and then enable simulation. Great!

Sadly, after fixing one issue, another three popped up. Firstly: when the balls stop bouncing around, they seem to roll forever! And secondly: on random occasions the balls just float right through solid objects! There's no sense to it! I'm just standing in one place, facing one direction, and shooting at a wall in one second intervals and it's just a matter of luck if the ball bounces of the wall or clips through it like a ghost! The last issue that I'm having is that the values that I put in the Blueprint graph (the "impulse" float) do nothing unless I go back to the ,,projectile" collision type, which restores the issues I described before.

Please help me out with this! I'm sure it's not hard to get it working, but I simply can't figure it out. I've been trying for two days and I'm getting a little upset! I would really aprecciate your help!!!

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asked May 09 '14 at 07:52 PM in Using UE4

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Hi Bproof,

I'm sorry you're having this issue. This is a known bug after the release of 4.1.0 and it has been brought to the attention of the developers.

It did work in version 4.0.2 so as a workaround until the fix comes out, you could open the Launcher > Click the down arrow beside of 4.1.0 > Change it to 4.0.2 > Make a New FPS Project in that.

You may have to implement a few changes that Ben showed you in your previous question, but the basic functionality should be there. https://answers.unrealengine.com/questions/41352/making-objects-move-after-theyve-stopped.html

Hope that helps.

Thanks, TJ

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answered May 09 '14 at 08:52 PM

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avatar image Bproof May 10 '14 at 01:52 PM

I would have never guessed that it was a bug. Thank you for your answer, I'll change the version :) !

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