How do i make a wall that can break into chunks only when damaged by a explosion?

[tepid path]

I want to make a puzzle for my map where the player has to get explosive barrels in order to get through a wall

[crimson raft]

I think func breakable has a breakable only by explosions flag

[tepid path]

yeah but what about physbox

so it breaks into cunks

chunks

[crimson raft]

oh

make the wall out of chunks, physbox

make it inactive gravity in the properties

then you could have the barrels output a trigger on damage which enables the gravity on the chunks

forgot to mention, a point_push will also be needed if you need the chunks to 'explode'

which would also need a ondamaged output from the barrels to the point push

[tepid path]

Oh ok

Ill try

[violet stream]

i'd suggest a filter_damage_type if i didn't misunderstand

[keen elk]

env_physexplosion might interest you
https://developer.valvesoftware.com/wiki/Env_physexplosion
@tepid path

point push is not an entity that exist in all game (csgo doesnt have it)
https://developer.valvesoftware.com/wiki/Point_push
and it affect even players (though through a flag), and any physic entity around so you cant really control it

physexplosion has a parameter

Limit to Entity (targetentityname) <targetname>
If specified, the explosion will only affect the matching entity.

[tepid path]

so i just make the barrel trigger the push upon explosion

but how would i make it so it knows when to push, like what if the barrel is on the other side of the map and it explodes

[violet stream]

you can filter the barrel with a filter_enemy and specify a radius in which the barrel needs to be to be valid

or actually it's easier, make a trigger brush around the area in which the barrel is close enough, and then check if the barrel is touching it, by enabling/disabling a logic_branch from OnStartTouch/OnEndTouch

there's probably an even easier or better way that i'm missing tho

[keen elk]

there could be something near the wall, a func physbox, which is filtered to damage, only to your barrel name

so it would only be able to break through the barrel damage

and OnBreak, you then know that the barrel exploded close enough, so you can use the env phys explosion to push the wall away