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Acceleration in seconds (over time) / finterp?

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.

Product Version: UE 4.20
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asked Aug 30 '18 at 07:03 PM in Blueprint Scripting

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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

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answered Aug 30 '18 at 08:07 PM

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avatar image G1K777 Aug 30 '18 at 09:05 PM

Speed Boost Acceleration = Speed Boost / 4s.

Speed = Speed + Speed Boost Acceleration * WorldDeltaSeconds ? alt text

boosttime.jpg (60.2 kB)
avatar image dZh0 Aug 31 '18 at 08:53 AM

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.

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