Function Lerp

[MacGregory]

how does the lerp function work? I want HP to fall smoothly with damage, and not abruptly in one frame! right now I wrote it like this health = health_max health = lerp (health, health_max, 0.15) at the enemy's Step. HP fall smoothly, but immediately recover to the previous level, in which I am wrong, please tell me.

 

[BattleRifle BR55]

Are both those lines of code actually in the same event? Lerp here is doing nothing because the first line already equalizes both variables.

 

[MacGregory]

then tell me how to write it down correctly?

 

[FoxyOfJungle]

You can use an approach function to do that:

/// @func approach(val1, val2, amount)
/// @arg val1
/// @arg val2
/// @arg amount
// Moves "a" towards "b" by "amount" and returns the result

function approach(val1, val2, amount)
{
    if (val1 < val2) {
        return min(val1 + amount, val2);
    } else {
        return max(val1 - amount, val2);
    }
}

 

[BattleRifle BR55]

What's the purpose of the "health = health_max;" line being in the Step event? Surely you don't mean the health to instantly be set to the maximum every time the latter changes.

 

[FrostyCat]

You want to have a fake HP variable following the real HP variable. Anything that needs a smooth transition would then reference the fake one.

Create:

health_shadow = health;

Step:

if (abs(health-health_shadow) > 1) {
    health_shadow = lerp(health_shadow, health, 0.15);
} else {
    health_shadow = health;
}

You mistake is making the real health follow the max health, instead of the fake health following the real health.

 

[Mackievellian]

Your solution to this actually helped me with a few other problems. I've seen your name around here in the forums plenty of times and more often than not your solution is what I was looking for, so cheers for the help.

You mistake is making the real health follow the max health, instead of the fake health following the real health.