I have a project where I want to fire multiple cannons from the side of my vessel.
The cannons activate a spawn, and the spawned actor (cannon ball) has a projectile component.
the issue is that there seems to be a problem with the spawning side of the transform as none of the projectiles shoot straight. And as you can see, it is not a random event, they shoot ‘straight’ everytime but not relative to the cannons/actor.
when i do a print text debug on the cannon balls, their relative is always 90%, so they are shooting ‘striaght’.
Anyone had this problem before?
Should i be ‘forcing’ the rotation at spawn?
Can you post the full code for the spawn?
What is driving the start location and rotation? Is it a passed in cannon mesh component? Perhaps an offset in the form of a scene component?
Are the cannons actor components or separate meshes or is the whole ship 1 mesh?
I thought it was straight forward (no pun intended). I spawn at a socket on the cannons and the projectile should inherit the relative rotation of the cannons?
I also have the tried this with only 1 cannon on its own, and it still fires off direction from where the red line is.
You seem to be getting the sockets world transform. I would probably go with local transform. I would need to test it out in a test scene but I’m not sure if it’s space is in world space then it may be changed with the parent rotation (not a 100% sure through).
I would try to make a rotation from x from the local space of the socket and make sure the socket’s x is pointing forward.
So changed the location of the transform to actor and or component. When i do actor, it uses the actors transform for some reason, and when i do the component, it shoots at a weird location underneath the boat.
I am guessing it is not locating the socket properly? I have double checked the socket name.
yet, in the world transform option, all sockets work.
Interesting thing too, every time i run a separate test, it will choose a different location to shoot all the projectiles. e.g. it will shoot under cannon 1, then under cannon 4, then 2. random transform locations.
I am very confused. in the world transform option, X vector is what I use, in the component/actor, I have to use Y vector.
Apologies, and thanks for the help. I am new, and I am sure it is simply a step I missed while setting up the actors/meshes.
Are you sure the socket name is correct in the get socket transform? Perhaps it has a space on the end? Go into the static mesh of the cannon => go to sockets and try copying the socket name directly (I think you have to trigger a rename).
That is the only thing that really comes to mind atm.
It should work as with the blueprints. I swapped my skinned meshes for statics + sockets and it fires ok as well.
ok, so i figured out it was being effected by the collision box of the boat. I had to retweak the collision box and now they shoot straight.
Thanks for the helping hand. you helped me problem solve this and gave be direction, greatly appreciated.
