[TUTORIAL] Blueprint Compass (16 Direction)

[alwynd]

Hi, I also have another solution.

Took me a few hours, but it is a UMG Material, with a pan parameter, and then a simple Rotator.yaw calculation.
I use MinMaxNormalize which is exactly the same as NormalizeToRange, but I didn’t include the Kismet math header at the time so… there’s that.
The texture is X seamless, and North is in the middle. If South was in the middle, just simply add 0.5 to each result below.

// Normalize a value between 0 and 1 range.
float MinMaxNormalize(float value, float min, float max)
{
return (value - min) / (max - min);
}

I use a material, that exposes a float3 parameter, but I only change the ‘R’ or ‘X’ value, between -1 and 1, depending on the heading.

I then calculate the -1 to 1 value using this code:

CurrentWorldDirection =  FollowCamera->GetComponentRotation().Yaw;
if (CurrentWorldDirection >= 0.0f)
{
	CurrentWorldDirection = MinMaxNormalize(CurrentWorldDirection, 0.0f, 360.0f);
}
else
{
	CurrentWorldDirection = -MinMaxNormalize(CurrentWorldDirection, 0.0f, -360.0f);
}

Then in UMG I created a dynamic material instance, and set my HUD Brush to that, and then applied this Blueprint code in the UMG tick event.
It simply sets the Material Pan ‘R’ parameter value, which is only really offsetting the U of the texture coordinate.

And here is a compass blueprint in the world so I could test my compass. Visible in the top