How TankAimingComponent knows about float Launchspeed?

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#1

How TankAimingComponent knows about float Launchspeed?
We didnt specified this property in TankAimingComponent…
can someone explain this how this works?

#2

It’s declared in the header file.

#3

Yeah but its declared in Tank header file not in TankAimingComponent

#4

Sorry I forgot I was looking at his current version, LaunchSpeed is being passed in via the parameter.

#5

Thanks for replies…
What you mean its passed in via parameter? Can you explain it more clearly?

#6 
void UTankAimingComponent::AimAt(FVector HitLocation, >>float LaunchSpeed<<)
{
    //code
}

Those are called parameters, one of which is called LaunchSpeed, which is a float. Meaning when this function is called it expects a FVector and then a float to be passed in.

#7

So basically from what i undersood… TankAimingComponent is a child of Tank? Am i right

#8

No. AimAt is a function of TankAimingComponent, it has two paramaters, an FVector and a float. If you don’t understand that I suggest you go back and watch the lectures on functions back in section 2. Currently trying to find the specfic lecture that goes over parameters.

#9

Section 2, Lecture 12 @ 2:42

#10

But is it because TankAimingComponent.h is #included into Tank.h, that we are able to choose this variable as a parameter in a function in TankAimingComponent.h?

#11

No. LaunchSpeed that is used in Tank::AimAt is the one from the Tank’s class in the Tank.h

UPROPERTY(EditAnywhere, Category = Firing)
float LaunchSpeed = 100000; // TODO find sensible default

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