PvZ2's True Health System

Editors of this wiki measure plant damage using "normal damage shots" and plant health using "bites." While these are good approximations of the real thing, that's all they are - approximations. Nothing beats the real thing. This post will attempt to explain that and what really goes on behind the scenes.

In the game, damage and health is measured in a different unit, which I'll just call HP (hitpoint). One pea deals exactly 20 HP worth of damage. Throughout the article, damage will be in this unit. Basic zombies have 270 HP; most plants have 300 HP.

But you'll say: "Wait a minute... If zombies have 270 HP, isn't that 13.5 NDS!? You are WRONG! Basic Zombies only have 180/181/200 (9/9.25/10 peas)!" Nope, I am not wrong. Zombies have 270 HP, this is absolutely correct. However, they reach a critical point once they lose 2/3 of their HP. This is a point past which any attack will decapitate (but not kill) the zombie.

A decapitated zombie is not truly dead as far as the game is concerned; however they will rapidly and automatically lose HP until they are truly dead. This is why plants still target decapitated zombies and their bodies still absorb projectiles for about a second. Some zombies (mainly Gargantuars and FF machined zombies) have a critical point of zero. This why their headless bodies absorb no extra shots. This is why Bug Bot Imp appears to have more health than other Imps.

Furthermore, zombie attacks (mostly biting) are measured in DPS (damage per second) rather than "bites." Almost all zombies have 100 DPS; that is it will eat a normal plant in 3 seconds, a Wall-nut (4000 HP) in 40 seconds, etc. Two zombies munching on a plant simply double the DPS, ie: two zombies will eat a full-health Wall-nut in 20 seconds. This greatly simplifies calculations and frees you from counting how many bites a plant has received.

	Sunflower HP: 300 PF: Generates 150 sun Sun production rate: ~24s
	Peashooter HP: 300 Attack rate: ~1.4s Damage: 20 PF: Shoots 60 peas
	Wall-nut HP: 4000 PF: Gains a shield with 8000 HP Special: Can receive First Aid
	Potato Mine HP: 300 Damage: 1800 PF: Instantly activates Potato Mine, and creates two activated copies of itself on random tiles Special: Is not triggered by flying zombies Special: Is an underground plant (cannot be planted on planks and Lily Pads)
	Bloomerang HP: 300 Damage: 20 (each hit) Attack rate: ~2.9s PF: Shoots ten boomerangs up, down, left, and right Special: Boomerangs can hit up to three zombies Special: Boomerangs deal damage (20) when returning
	Cabbage-pult HP: 300 Damage: 40 Attack rate: ~2.9s PF: Shoots mega-cabbages (200 HP) on all zombies on screen
	Iceberg Lettuce HP: 300 Damage: 0 PF: Freezes every zombie on screen for 12 seconds Special: Freezes zombie for 10 seconds
	Grave Buster HP: 300 Special: Eats graves in 4s
	Bonk Choy HP: 300 Damage: 15 Attack rate: ~0.33s PF: Deals 60 damage every 0.1s to every zombie in 3x3 area; for a total damage of 1500 Special: Uppercut instantly kills zombies
	Repeater HP: 300 Damage: 20 (per pea) Attack rate: ~1.4s (two peas) PF: Shoots 90 peas plus one GiantPea (600 damage)
	Twin Sunflower HP: 300 PF: Generates 250 sun Sun production rate: ~24s (100 sun)

W.I.P.

For zombies, I also included a "Perceived HP" stat, which is how much HP they appear to have (ie: how much damage they take before they get to the point where they lose their heads).

	Basic Zombie HP: 270 Perceived HP: 181 DPS: 100 Speed: 0.185
	Conehead Zombie HP: 370 (cone); 270 (zombie) Perceived HP: 551 DPS: 100 Speed: 0.185
	Buckethead Zombie HP: 1100 (bucket); 270 (zombie) Perceived HP: 1281 DPS: 100 Speed: 0.185
	Imp HP: 270 Perceived HP: 181 DPS: 100 Speed: 0.22
	Gargantuar HP: 3600 Perceived HP: 3600 Speed: 0.24 Special: Releases Imp when health reaches 1800