Question

This will be hard to explain what I want, so I’ll try my best.

I have a game, and the players in the game have a health counter (hp), and bodyguards as well. Each bodyguard has 100 hp, and once all a players bodyguards are gone, the damage comes off their hp.

So, these are the values I have:

$dmg // the damage
$bgs // the amount of bodyguards the player has
$bg_hp // the bodyguards health. Starts at 100, drains with $dmg fired at
$hp // the players health

When they’re shot, it needs to check if they have $bgs. This is a basic example.

if ($bgs > 0) {
  $bgs_hp = $bgs_hp - $dmg;
     if ($bg_hp <= 0) { $bg = $bg - 1; $bg_hp = 100; }
  } else {
  $hp = $hp - $dmg;
  }

Anyway, the part I need help with is this. I want the damage to overlap.
So say the $dmg is 200, that would kill 2 bodyguards (they have 100 hp each). Or someone could shoot all their bodyguards and a remainder of the $dmg comes off the $hp too.

The reason I need help is because im awful at maths, and theres problem some MOD function or something that I need to use.

Examples;

1) Player has 3 bodyguards. Someone shoots at him for 150 dmg. It would kill 1 bodyguard, and cause 50 damage to the next.

2) Player has 1 bodyguard that is half hp (50). Someone shoots him for 160, it’d kill the bodyguard (50hp), and the rest of that damage (110) would kill the player too.

Answer 1

I’d simply retain an array with the hps of each bodyguard, like this:

$bgs = array(100); // one bg with 100 hp

or

$bgs = array(100, 300, 50); // one bg with 100 hp, then one with 300, etc

If you want to know how many bodyguards there are, a simple count($bgs) tells you.

This will make it much easier for you to expand your game in the future, and it also makes it much easier to resolve these types of calculations. You can now write:

$hp = 100;
$bgs = array(100, 100);
$damage = 101; // for example

// As long as there's still damage to take and bgs to take it:
while($damage && !empty($bgs)) {
    $soak = min($bgs[0], $damage); // not more than the first bg can take
    $bgs[0] -= $soak; // remove hps from the first bg
    $damage -= $soak; // deduct from the amount of damage to tage
    if ($bgs[0] == 0) {
        // bodyguard dead, remove him from the array
        array_shift($bgs);
    }
}

// If there's any damage left over, it goes to hp
$hp -= $damage;

See it in action.

Update: Here’s code that works with your current scheme. It’s not really simpler, and it is more restrictive on what you can do:

$max_bg_health = 100;
$hp = 100;
$bgs = 2;
$bg_hp = $max_bg_health; // so that makes 2 "full health" bgs
$damage = 101; // for example
if($bgs) {
    $bg_capacity = ($bgs - 1) * $max_bg_health + $bg_hp;
    $soak = min($bg_capacity, $damage);
    $bg_capacity -= $soak;
    $damage -= $soak;

    // update bodyguard status; this is extra tricky because $bgs is not
    // "the amount of full hp bgs" (which would make it a lot simpler)
    // but "the amount of bgs including the one which may not have full hp"
    $bgs = $bg_capacity ? intval($bg_capacity - 1 / $max_bg_health) + 1 : 0;
    $bg_hp = $bg_capacity % $max_bg_health;
}

// If there's any damage left over, it goes to hp
$hp -= $damage;