T8 Zombie Health for T5/T6 Zombies

t8_zombie_health.gsc

/*
┌─────────────────────────────────────────────────────────┐
│    Black Ops 4 Health Cap for Black Ops 1/2 Zombies     │
└─────────────────────────────────────────────────────────┘

┌─────────────────────────────────────────────────────────┐
│                INSTALLATION INSTRUCTIONS                │
├─────────────────────────────────────────────────────────┤
│    https://plutonium.pw/docs/modding/loading-mods/      │
└─────────────────────────────────────────────────────────┘

┌─────────────────────────────────────────────────────────┐
│                WHAT DOES THIS SCRIPT DO?                │
├─────────────────────────────────────────────────────────┤
│ Replaces the classic zombie health calculation with     │
│ the one from Black Ops 4.                               │
│                                                         │
│ Max health for standard zombies is 11,272 at round 35.  │
│                                                         │
│ Hellhounds, Pentagon Thief, George Romero, Avogadro,    │
│ Jumping Jacks, Warden, Witches, and Panzer Soldat       │
│ remain unchanged.                                       │
│                                                         │
│ Maximum health for special zombies by player count:     │
│   Astronaut: 180,352 \ 135,264 \ 90,176 \ 45,088        │
│   Napalm:    180,352 \ 135,264 \ 90,176 \ 45,088        │
│   Sonic:     112,720 \ 84,540  \ 56,360 \ 28,180        │
└─────────────────────────────────────────────────────────┘

┌─────────────────────────────────────────────────────────┐
│                     CHANGE NOTES                        │
├─────────────────────────────────────────────────────────┤
│ [v1.1.3]                                                │
│   - Improved comment clarity.                           │
│   - Hide logs behind developer mode.                    │
│   - Removed dependencies for easier installation.       │
│ [v1.1.2]                                                │
│   - Fixed BO1 error due to BO2 include.                 │
│ [v1.1.1]                                                │
│   - Incorrect value fix.                                │
│ [v1.1.0]                                                │
│   - Added BO2 support.                                  │
│   - Discovered a possible decompilation error.. but it  │
│     has no effect on the result.                        │
│   - Removed campaign difficulty health modifiers.       │
│   - Improved script clarity and comments.               │
│ [v1.0.0]                                                │
│   - Initial release.                                    │
└─────────────────────────────────────────────────────────┘

┌─────────────────────────────────────────────────────────┐
│                       CREDITS                           │
├─────────────────────────────────────────────────────────┤
│ - [LeftoverAtoms] creator.                              │
│ - [All0utWar] motivation / just a chill guy.            │
│ - [ate47] atian-cod-tools were used to extract scripts. │
└─────────────────────────────────────────────────────────┘
*/

main()
{
	level thread zombie_health_monitor();
}

zombie_health_monitor()
{
	// Variables are undefined until around this point.
	level waittill( "start_of_round" );

	while ( true )
	{
		// level waittill( "zombie_health_changed ");
		while ( IsDefined( level.zombie_health_old ) && level.zombie_health == level.zombie_health_old )
		{
			wait_network_frame();
		}

		zombie_health_changed();
		level.zombie_health_old = level.zombie_health;
	}
}

zombie_health_changed()
{
	// Let round number be overridden, but keep as a fallback.
	round_number = level.round_number;

	// We're in No Man's Land.. so use the timer.
	if ( IsDefined( level.nml_timer ) && IsDefined( level.on_the_moon ) && !level.on_the_moon )
	{
		round_number = level.nml_timer;
	}

	ai_calculate_health( round_number );

	update_zombie_health();

	/# IPrintLn( "[RR] Set Zombie Health to ", level.zombie_health ); #/
}

// BO4 zombie health calculation.
// FACT: The majority of this code snippet is from the BO2 era.
ai_calculate_health( round_number )
{
	if ( round_number > 35 )
	{
		round_number = 35;
	}

	level.zombie_health = level.zombie_vars["zombie_health_start"];

	for ( i = 2; i <= round_number; i++ )
	{
		if ( i >= 10 )
		{
			old_health = level.zombie_health;
			level.zombie_health = level.zombie_health + int( level.zombie_health * level.zombie_vars["zombie_health_increase_multiplier"] );

			if ( level.zombie_health < old_health )
			{
				level.zombie_health = old_health;
				return;
			}
		}
		else
			level.zombie_health = int( level.zombie_health + level.zombie_vars["zombie_health_increase"] );
	}
}

// No Man's Land modifies the health of active zombies using the old health calculation.
update_zombie_health()
{
	zombies = GetAISpeciesArray( "axis", "zombie" );

	for ( i = 0; i < zombies.size; i++ )
	{
		// Received damage.
		if ( zombies[i].health != level.zombie_health )
		{
			continue;
		}
		if( zombies[i].gibbed )
		{
			continue;
		}
		if ( zombies[i].head_gibbed )
		{
			continue;
		}

		zombies[i].health = level.zombie_health;
	}
}

// Copied utility function to eliminate dependencies.
// Black Ops 1/2 has different locations for this function.
wait_network_frame()
{
	if ( NumRemoteClients() )
	{
		snapshot_ids = getsnapshotindexarray();

		acked = undefined;
		while ( !IsDefined( acked ) )
		{
			level waittill( "snapacknowledged" );
			acked = snapshotacknowledged( snapshot_ids );
		}
	}
	else
	{
		wait(0.1);
	}
}