Collision for characters

[PerEspen00]

Is there any way to get add more collision for character controllers? Maybe create a box in the start function or something to make a bigger collision than the default cylinder(which really should get fixed).

 

So I'm looking for a piece of code to use in the start function of my creature script so that I can create a box which will act as that creatures collision box for sword hits and general physics collision in the game.

 

Any help appreciated!

[Genebris]

There is no way to change shape of character controller collider. The only workaround is to use regular rigidbody instead of character controller, but that brings many disadvantages.

[gamecreator]

There are many ways to detect if a sword hits a creature. Since you're using Lua, the easiest is probably CollisionTrigger.

 

For general physics collisions, you could parent a box to a creature. Check out the code examples in the Entity docs, specifically SetShape and SetParent. However, the navigation system will ignore it so you might not get the effect you're hoping for.

[Genebris]

For general physics collisions, you could parent a box to a creature. Check out the code examples in the Entity docs, specifically SetShape and SetParent. However, the navigation system will ignore it so you might not get the effect you're hoping for.

You can't attach collider as a child, this will break physics.

[PerEspen00]

How about creating an independent collider and moving it with the creature? I need navmesh so I can't use rigidbody.

 

This is the creature: https://www.3dmodels-textures.com/Creatures/CaveMonster

[Genebris]

It won't work, unless Josh adds ability to change character collider, you will have to use rigid body for anything like this.

[PerEspen00]

So there is no way to use navmesh if the character isn't a cylinder shaped thing? That should really get fixed... kind of a game breaker.

[Crazycarpet]

Yeah this big flaw plagues Unity engine as well, I think if Josh came up with a solution it'd be a nice leg up over Unity in that regard.

[macklebee]

The problem is with recast/detour. The navmesh needs certain data like character height/width/stepheight to determine if a path would be feasible, how close a path should be around walls, etc... If you had multiple character sizes then you would need multiple navmeshes - which means characters on different navmeshes would have no knowledge of each other. While I agree that having access to certain variables to control the character cylinder size would be ideal, then it would be an issue with navmeshes and what is passed to it prior to creation. The easiest solution (especially for 90% of users) was to hardcode this. Maybe one day Josh will allow us to control these variables for the controller and the navmeshes, but I would be surprised since this has been requested since LE3 with no luck.

[PerEspen00]

Ok, I understand the problem. How about a way to check if a sword has hit a target? Could one create something in front of the player which checks for collision?

[Genebris]

You can do this using PhysicsSetPosition to move sword collider.

[Josh]

The melee script uses a raycast. Box raycasting is used on the character to collide with his arms, legs, head, etc. This is in the monster and soldier AI scripts.