I come from Unreal where there are channels which are the same as layers. However, in unreal you can set a channel to be blocking or overlapping and when you do line traces (raycasts) you can differentiate between these.
How do I do the same in Godot?
The information I’ve found so far doesn’t show how to handle if a Player wants to react to both walls which should block and other volumes on other layers which should let the player through but affect them somehow (ie send a signal on overlap probably, which seems to be a more targeted version of interfaces in Unreal)?
Masks would allow a player to walk through a wall, I guess I’ve always used trigger volumes which are similar to Area3D. For raycasts like seeing through glass but not walking through it, I would have a layer for transparent parts, the player can mask that layer, while the raycast does not
So, if I understand things correctly, there’s still no special trigger flag/layer in Godot (again Unreal actually has explicit trigger volumes built in as well), but rather you achieve that by putting the Area3D you suggest on a layer which the player does not collide with, but for the Area3D you make sure that its mask collides with the player and then send a signal?
Or is there another best practice when it comes to Godot?
Area3D does not block physics body collisions, so it’s always able to walk through. Sounds good, but I would need a real example to comment on mask/layer set up. As long as the Area has the player’s layer in it’s masks then the signal can fire.
The other layers do not have to do with collision at least. there are 2D and 3D collision layers, you will probably only use 3D for a 3D game. Good idea to name the physics layers in the project settings, I like to use Unreal’s default WorldStatic, WorldDynamic, etc.
