How to count ballistic curve?

[mistr88]

Hi,
I have problem that I have aiming system using position, and I need to give the projectile some real looking ballistic curve. This are some basic points of what I need.

• the part can be in any distance (inside gun max distance)
• It must look really realistic
• it must look realistic in any distance, so it won’t be just same curve, but scaled
• it will be really great, to have the curve easily changeable

But I don’t have any idea, so can you help me with the logic?

[ThanksRoBama (Emma)]

Check out

Calculating Bullet Drop and Trajectories

I was wondering how games like phantom forces are able to calculate bullet drop. I know that you can get a part on a ray cast but that is a straight line. Do you have to do multiple ray casts forming a parabolic curve with low resolution so to make computation less stressful? Also, if I have a slower moving object like a ball, is it less computationally stressful to do raycasting of trajectory with a delay between each individual raycast in the parabola instead of a touch event server side?

and

Modeling a projectile's motion

This guide was originally written for scriptinghelpers. The original can be found here. As a somewhat active member of the Scripting Helpers discord one of the most common questions I see is how to have a projectile travel an arc. Most people want to know how to do this for things like basketballs or cannon balls and so forth. Since this is such a popular question I thought it would be worth writing a blog post on it and talking about a few other things we can extend from our findings. Deri…

and

the search feature

[mistr88]

I am in 7th class, so I really don’t understand integrals. Is there some way with easier math operations, or can you describe it to me?

[madattak]

That first thread already contains all the code for firing a bullet with a curve and code to predict the path of bullet, you don’t strictly have to know how the equations got there.

[mistr88]

Ok, but from what I know from first few replyes is, that i know position, on that i am aiming, but i know position, on what i need it to land

[VegetationBush (FartedWayTooHard)]

If you want gravity to affect it, you can use body force

[mistr88]

Ok, but there are much more aspect, than just gravity.

[mistr88]

Ok, but i need to count the curve from target position.

[mistr88]

There is also air, so it is slowing down, but also can go up, …
But main problem is this:

@mistr88

Ok, but i need to count the curve from target position.

so i need to use maths.

[mobyboyy]

@mistr88

so i need to use maths.

You really don’t. There’s many resources out there that involves minimal math.

To calculate bullet trajectory (without math) you can use this resourced called “FastCast”, it has bullet physics (as highlighted by the post)

Making a combat game with ranged weapons? FastCast may be the module for you!

Hey everybody! I’ve just released Version 4 of the module. Please make sure to message me if you see anything wrong. This version adds… [image] Physics! (I’m mentioning @SmoothBlockModel and @CheetahSp33d since you two had asked about it.) I’ve also created an update log in the bulletin board. Please read it, as I’ve moved the API docs over to my GitHub as well as some other important information: FastCast Changelog Thread

I’m no expert (I really haven’t used this module), but if you do need help, maybe @EtiTheSpirit can provide you with further support. The docs should help you initially set this up.

@mistr88

I am in 7th class, so I really don’t understand integrals

For me personally, I learned some useful math by teaching myself, so you can be in a lower math level and still learn some useful programming concepts.

[mistr88]

@mobyboyy

For me personally, I learned some useful math by teaching myself, so you can be in a lower math level and still learn some useful programming concepts.

This is what I am doing, I learned whole c#, lua, and some others myself, and now i am learning some basic math functions like sinus

[mobyboyy]

That’s good, but you should learn the theorems and other important things, sine by itself requires learning the Law of Sines. Or with cosine you should also know Law of Cosines, that kind of thing.

[mistr88]

I tried to message @EtiTheSpirit and he saied, that this model can just simulate the ballistic curve, but can’t count it from target position.

[Xan_TheDragon (Xan)]

@mistr88

but can’t count it from target position.

Not stock, at least.

If you know how to do the math, you can manage it. I’m not educated in this type of math personally, or I at least don’t know how to get force + initial velocity from displacement. There’s an equation out there. Just do some googling.