Hi,
The player character can pickup an item, the player can also drop an item, however, there are two issues I’m facing that I can’t rectify.
The cube that is held doesn’t disappear from the players hands when the ‘G’ / drop key is pressed.
When the ‘G’ / drop key is pressed, the cube falls through the floor a little bit.
Player BP
Cube Item Pickup
Thanks for any assistance!
Hi,for the problems right now only .you could try replacing the detach node with set static mesh.set it to none.
and why the cube enters ground a little,it’s probably the cube’s pivot point.make sure the cube actor’s center is at its button.
Thanks for your help! it definitely gets rid of him holding it but no longer drops it, is there a guide you know of that is inclusive of pickup and drop for physics based items? or do you think this is salvagable?
if its physics based, detach (assuming you are attached) enable collision, enable physics and possibly addimpulse in the actorforwardvector*x
you may also want to set the world location first incase it colliside with the owner when you enable physics
Okay, so I have the following working well, except, it lands immediately on the floor at the base of the player and through the ground a little bit, but we have issue 1 resolved, which was to remove it from player hands when dropped!
I wasn’t sure where to change the collision settings on the BP or within the player itself
Player (Equipped Item static mesh)
The pickup item BP static mesh
I could enable physics on the item BP but not the Player (Equipped item static mesh)
if your using physics you dont need to find the floor, gravity will 
so for now remove the SetActorLocation.
what is your item ? if its an actor just detach it, dont set the staticmesh to null.
regarding collision,
when equipped you want to disable collision and physics or it will hit the owner
when unequipped enable collsion and physics
also using physics your static mesh should be the root component
Okay I’ve updated as you suggested, but now the cube still appears in the hands of the player and doesn’t drop
Item Pickup
Item Drop
Equipped item static mesh collision
Demostration
on item drop you didnt set physics enabled which is your error message there.
also when you detach keep world.
Okay I’ve fixed that up but the static mesh itself still falls through map
collision setting for static mesh
resetting position make it act normally, not sure why it doesn’t on game start
I made the following change and it now appears correctly
We have the following remaining issues:
Demonstration
Blueprint logic
so what are you setting the static mesh for, its already set in world?
also for physics to work properly it needs to be the root component, you seem to have a mesh and a collision box, can we see the setup of your item
The settings works for what the character is currently ‘holding’ or at least look like he is, I’m not sure what to do about the last bit you mentioned I’m not well versed in UE, it’s my first game for context sorry!
From what I can tell the static mesh itself does have a collision box on it, hopefully below helps
Static mesh
Collision box
Static mesh itself
drag the static mesh over the default scene component too make it root, then drag the collision box on the static mesh and ‘attach’
i assume the collision box is to detect if close enough to pickup, so make it query only and ensure its not set block any other collision channels
Okay, that is done and I can see improvement!
ok so since your socket is set to none it attaches to the root of the character, you’d have to create a socket on the skeleton in front of the mesh to make it appear like its being held.
you physics still isnt set properly so its not working at all. try get
equippeditem->getrootcomponent->setsimulate physics true.
also double check all the collision since you’ve moved everything around
Hmm, I tried to connect it to the set simulate physics but it won’t let me
collisions on equipped item
ah sorry it should be a of primitive type. too be honest all this should be done in the item itself anyway so i know its a bit of a pain but i’d recommend moving it all.
just create 2 functions in the itembase, pickup and drop and for testing purposes you can just use your interact interface call.
for now though since you’ve got a HardRef to the item you can just get the staticmesh and setphysicsenabled on that if you prefer.
also as ive said dont SetStaticMesh to null, you cant have collision on a null component
It creates the cube correctly and drops it but I can still see the weird cube from inside and I can only pick it up once the physics cube so I’m at a loss at this point.
Would it be too much to ask to recreate this somehow and show me how you did it? like you mentioned doing it all in the item itself?
Scrapping my initial logic, I followed this guide and seem to be getting closer to what I had in mind, although it’s too far from the player when picked up
the recreation cant have anything to do with the pickup/drop logic, check youre not spawning a duplicate or something in the item is having that effect.
