A way to detect when to objects collide?

[superadamwo]

two*
I've been trying to figure this out for ages now, and had to stop working on my gamemode because I couldn't find a way to do it. Is there a hook or some other method I can use to detect collisions between two objects, namely two vehicles? I also need it to report what the two entities were that collided.

[Aide]

[b][url=http://maurits.tv/data/garrysmod/wiki/wiki.garrysmod.com/indexcdb2.html?title=ENT.Touch]ENT.Touch [img]http://wiki.garrysmod.com/favicon.ico[/img][/url][/b]

[vercas]

[QUOTE=superadamwo;34813343]two*
I've been trying to figure this out for ages now, and had to stop working on my gamemode because I couldn't find a way to do it. Is there a hook or some other method I can use to detect collisions between two objects, namely two vehicles? I also need it to report what the two entities were that collided.[/QUOTE]

Look at the code of the sent_ball (Bouncy Ball).

[superadamwo]

But I can't use SENT hooks to detect collisions between things that aren't SENTs can I?

[freemmaann]

I would also love to know this, I don't think there is a descent way tho. There's that ShouldCollide hook, but its not reliable.

[superadamwo]

ShouldCollide doesn't work like that, I've tried it. It's called every tick basically, not right before things are colliding.

[vercas]

[i]Entity.PhysicsCollide[/i].

You can use it on entities that you didn't make by overriding their [i]PhysicsCollide[/i] method.

[lua]-- myEnt is my entity.
local oldPhysicsCollide = myEnt.PhysicsCollide
function myEnt:PhysicsCollide(data, physobj)
-- Do shiz.
oldPhysicsCollide(self, data, physobj)
end
[/lua]

I told you to look a the bouncy ball's code:

[lua]
--[[---------------------------------------------------------
Name: PhysicsCollide
-----------------------------------------------------------]]
function ENT:PhysicsCollide( data, physobj )

-- Play sound on bounce
if (data.Speed > 80 && data.DeltaTime > 0.2 ) then
self:EmitSound( "Rubber.BulletImpact" )
end

-- Bounce like a crazy bitch
local LastSpeed = math.max( data.OurOldVelocity:Length(), data.Speed )
local NewVelocity = physobj:GetVelocity()
NewVelocity:Normalize()

LastSpeed = math.max( NewVelocity:Length(), LastSpeed )

local TargetVelocity = NewVelocity * LastSpeed * 0.9

physobj:SetVelocity( TargetVelocity )

end
[/lua]

[superadamwo]

Yeah I knew about that function but I was confused about the difference between a SENT in gmod and a regular entity. So you are saying that I can use this function with any entity even if it is not Lua based, like a jeep or a regular prop for example?

I don't actually think you can, so what I was going to do was make an invisible SENT with a bounding box the size of the jeep's which would then have a PhysicsCollide hook in it. The other method I was considering was combining Entity.GetCollisionBounds with ents.FindInBox, but I don't know if that will work at all.

[S W]

I actually asked this exact same question awhile back with no luck:
[url]http://www.facepunch.com/threads/1059660[/url]

[superadamwo]

Yeah I found that thread while searching for an answer. Do you know if FindInBox will find entities that are partially in the box, like if I had a jeep whose front was like 5 inches inside the box would it be counted?

I've asked this question before as well, like 2 years ago, nobody knew the answer then either. I wish there were more people that browsed this forum looking to answer questions rather than ask them.