Acceleration in seconds (over time) / finterp?

G1K777 · August 30, 2018, 7:03pm

Hello,
i want to create an acceleration on time. For example from 0-300 in 4s.

Can it be done with interp speed? The weird thing is, i wonder why someone created “Interp speed” and not “Seconds”.

I guess the Finterp doesn’t work with my idea, i need to make it using “World Delta Seconds”, i know how to create a stop watch. ( Value(1) - World Delta Seconds) and then just "Print = ‘1s is over’ " done.
How do i do this with math?

My max speed value is set to “300”
Time to reach 300 is “4” seconds.

dZh0 · August 30, 2018, 8:07pm

Speed = Acceleration * Time => Acceleration = Speed / Time => Acceleration = 300/4 = 75

So if you want 0 to 300 in 4 sec your acceleration should be 75 (units per seconds squared).

VelocityVector = VelocityVector + AccelerationVector * WorldDeltaSeconds

and then move your pawn with VelocityVector * WorldDeltaSeconds

G1K777 · August 30, 2018, 9:05pm

Speed Boost Acceleration = Speed Boost / 4s.

Speed = Speed + Speed Boost Acceleration * WorldDeltaSeconds ?

dZh0 · August 31, 2018, 8:53am

The text (Speed = Speed + Speed Boost Acceleration * WorldDeltaSeconds) is correct but the blueprint is not.

You should first do Speed Boost Acceleration * Get World Delta Seconds before adding it to the Speed and then just set that.