Gravestone Mechanic

= My concept for this feature is as follows:- = 

Whenever a Colony NPC (Worker/Citizen – not Guard)  dies (perhaps only within the townhall boundary) – a Gravestone has a chance of spawning around 10-20 blocks away from your townhall boundary.

This Gravestone will be destroyable by the player mining it (should have a toughness the same as Obsidian) – would be great if this could be a brand new block that actually looks like a gravestone J

This gravestone will act like a Mob Spawner, spawning either a regular Zombie (25%), Skeleton(25%), or a new Mob “Zombie Colonist”  The Zombie Colonist will upon hitting someone infer the “Disease” effect.

The disease effect is like a potion effect, but should last indefinitely (or at least a significant time, i.e. 60 mins) Anyone infected with Disease will have their movement speed halved for the duration (Note the player should be able to use a speed potion to cancel out the effect)

Walking at half speed will make a lot of the workers/citizens less effective and therefore affect the efficiency of the colony.

The Healer NPC will be required to Cure the disease through the use of healing potions (see Healer Worker section for more info).

This feature would make it more important to protect your colony and defend the workers and citizens from hostiles.