elder bridge
I'm currently working on a segment for a game where you have a flashlight and need to guide it around your environment with the cursor. However, though after many hours I have managed to somewhat get this to work, the results are extremely offset from where they actually should be. Any recommendations?
Note: The code is under _physics_process, and its set to collide with a area body about 50 meters away from the camera
elder bridge
Alright, just did a test and putting the flashlight in the center of the camera actually produced basically no different. There was a slight improvement of location, but like only a few pixels
Using get_viewport().get_mouse_position() instead of DisplayServer makes it much much better though, even if it’s still not perfect
arctic brook
what is the exact intended behavior you’re looking for? do you want the flashlight spot to be exactly where the cursor is at all times?
elder bridge
Yes
I think getting my collision to work properly will fix it after doing a minor test just now
arctic brook
yeah i was thinking you need the wall collisions to be a factor for the behavior to work as intended
latent hazel
So I was trying to describe this yesterday but now I have a more physical metaphor.
Imagine a 2d side view of the situation with a piece of notebook paper sideways. Your eye is in the middle of the left side, your flashlight at the bottom left corner. Lay a pencil down on the piece of paper as an obstacle in the scene.
You can move your finger on the right side of the paper (the mouse), and draw a line from eye to finger; where it intersects the "obstacle" is where you want the flashlight to focus iiuc? No solution but to fix the raycasts to work correctly, if so
elder bridge
God 😭 so this all comes back to my day one issue of my grid maps just not having collision
This is the tree for my gridmaps mesh library, any thoughts as to why this doesnt work?
arctic brook
i’m not familiar with gridmaps, but always check the collision layers and masks are set appropriately
elder bridge
First thing I did lol.
All ray casts (and the raycast for the flashlight) are set to mask 2, and the grid maps to layer 2
arctic brook
can you try printing the result of your raycast when you click on a wall?
like, is the result always null?
elder bridge
Not always
arctic brook
does it print the wall you were expecting?
elder bridge
No: it’s hitting the occasional collision objects I hid in the walls so the player couldn’t clip through them
But, I don’t have them everywhere since the movement system means there’s places the player can’t reach
latent hazel
🤔 collision surfaces you're not using are cheap enough (discarded early by broad phase)
I think it's false economy. Make solid things solid.
arctic brook
they’re trying to make the walls solid, it’s not registering though
elder bridge
I think the only thing I’m worried about is having to spend the time placing them everywhere, as silly as that sounds
latent hazel
Are they? The way I read their response, solid things are intermittently solid 🙂
If you model things in blender, during import if the object is named -col it will handle it for you
elder bridge
If you model things in blender, during import if the object is named -col it wil...
I did that! It just didn’t work properly
So I had to resort to second hand collision
arctic brook
I think the only thing I’m worried about is having to spend the time placing the...
oh, the walls have collision shapes though right? or just the floors?
latent hazel
Which iiuc is not all walls the player can look directly at, right?
arctic brook
oh your walls will all need collision objects if you want the raycast to register them
latent hazel
Like myst or smth, with discretized steps?
arctic brook
don’t worry too much about optimizing collision objects until it’s a concern. right now you want to get a solution working first
elder bridge
Filling everything with collisions works! Now to spend the rest of the day doing that
arctic brook
awesome! glad to hear we have progress!
elder bridge
Just listing an update here: I solved the problem with my grid map collision! Turns out changing the collision of the grid map itself does nothing, and I actually needed to changed the collision of the static body resource that I exported to the mesh library in order for it to work as intended