Lua Vector forward

[Andy90]

Hello  i want to ask if there is a forward calculation for a vec3 ?

[Josh]

It looks like the Unity "forward" constant is just Vec3(0,0,1). What exactly are you trying to do? Maybe entity.move(0,0,1) is what you are looking for?

[MarKli]

If you are controlling a physics object then I think what you are looking for is Josh.

But I think they're looking for this. https://gamedev.stackexchange.com/questions/190054/how-to-calculate-the-forward-up-right-vectors-using-the-rotation-angles

I use this in the Ultra Engine for a free camera without collision.

[Andy90]

2 hours ago, Josh said:

It looks like the Unity "forward" constant is just Vec3(0,0,1). What exactly are you trying to do? Maybe entity.move(0,0,1) is what you are looking for?

Yes the move was what I was looking for. A function to get a vector before the entity would be good, so you could for example spawn something before the character like whats @MarKlilinked

[Josh]

You can use Transform:Normal(0,0,1,entity,nil):
https://www.leadwerks.com/learn?page=API-Reference_Object_Math_Transform_Normal

[reepblue]

I recall suggesting things like Vec3().Forward()/Up() after I was trying to apply a concept done in Unity to Leadwerks. 

 

[Andy90]

I collaborated with ChatGPT to create a 'lookat' function. While it's not a direct 'forward' function, I believe it can be helpful to others.
 

function LookAt(position, pitch, yaw, distance)
	pitch = math.rad(pitch)
	yaw = math.rad(yaw)

	local forward = Vec3()
	forward.x = math.cos(pitch) * math.sin(yaw)
	forward.y = -math.sin(pitch)
	forward.z = math.cos(pitch) * math.cos(yaw)

	local forward_length = math.sqrt(forward.x ^ 2 + forward.y ^ 2 + forward.z ^ 2)

	forward.x = forward.x / forward_length
	forward.y = forward.y / forward_length
	forward.z = forward.z / forward_length

	forward.x = forward.x * distance + position.x
	forward.y = forward.y * distance + position.y
	forward.z = forward.z * distance + position.z

	return forward
end

 

[Alienhead]

Handy function there, ..  but don't forget LE has an optimized Point built in. 

https://www.leadwerks.com/learn?page=API-Reference_Object_Entity_Point

[Andy90]

Yeah i know. Maybe "lookAt" is the wrong name for the function. Is more the Vec3 at the point where the entity (camera) is looking at

[Alienhead]

Gotcha, point a Vec3() position with math instead of an entity..   cool.