Game Development Asked on November 2, 2021
I’m implementing a camera for a game and I’m using the LERP formula for smooth chasing. However, if the target moves fast enough, the camera can never reach it unless the t
((1 – t) * v0 + t * v1) value is high enough, but that is exactly the problem: some targets might still move faster than the current t
value.
This might lead to 2 problems:
How do I scale up my t
when the delta distance (abs(v1 - v0)
) gets lower, so that the camera will starts at a slow chasing rate and increases as it gets closer (therefore no targets could run away)?
I managed to solve this by increasing t
over time, as it will eventually reach 1, on which LERP would return the v1
's value, like so:
f = some constant smoothing factor between 0 and 1
t = min(t + f, 1)
v0 = (1 - t) * v0 + t * v1 // lerp
This guarantees to reach v1
even if it's moving, regardless its speed. When moving the camera to a different object, t
must be reset for the smoothness effect.
However, if there are any approaches that doesn't require to sum up t
every game tick, please leave a comment!
Answered by Henri on November 2, 2021
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