Summary
In this gamemode, one person is chosen to have a disease (that turns people into zombies). They want to infect as many people as possible before a certain time. At that time, they turn into a full blown zombie (as do every other person who is infected), and many NPC zombies appear. Survivors will then have to hold out until a certain time, at which they have to fight to an extraction point.

Gameplay
First of all, every player has hunger, thirst, and a need to sleep. There will be food, water, and places to sleep everywhere around the map in addition to people being able to buy/sell food/water. If your hunger/thirst becomes too great, you die. If your sleep runs out, you will go to sleep right where you are standing, and it will take longer. Note that you can only sleep otherwise on a bed.

Every player has an infection bar, showing how much of the infection they have caught. When it gets to the top, they become infected. This is true for ALL stages (see below).

There are also basic jobs. At the beginning of a round, you choose a job. These will NOT be like RP jobs. In The Infection, jobs basically just give you one or two extra skills (craftsman can make hammer/nails, doctor can make medpacks and eventually shots that get rid of the infection... See listing below).

Weapons will be in the game, though if you kill someone other than the infected you will get a penalty (what that will be is yet to be determined).

Finally: Barricading. All around the map there will be things like wood planks, scrap metal, and all sorts of other things. You can use these to make barricades to keep people (or zombies/infected) out. Note that you will need a pretty large supply of water/food in the area. You will have a Physics Gun, but you will not be able to freeze things. Instead, you must buy a hammer and nails for wooden props, or a welder for metal props.

The game is divided up into internal 'stages'. Each stage has different objectives and gameplay. Note that you are never told when you are moving into a new stage, nor are you told what the current stage is. The stage system just makes it easier to understand the flow of the game, as well as being used in the code itsself. The stage listing is below.

Note that there is a money system, but you get no income except for winning a round. Also, all materials can be made into something by a craftsman, but none can be bought from the game itsself. The economy of the game is strictly run by players (except for a trading system between players).

//The Infection FGD for the Valve Hammer Map Editor

@PointClass color( 255 255 0 ) = infect_control :
"The Infection gamemode controller. Only allow one of these per map!" +
"This will allow you to use inputs/outputs to change things in the map" +
"based on the stage."
[
	EscActivator(target_destination) : "Escape Target" : : "Entity to call an output on in the escape stage"
	EscOutput(string) : "Escape Output" : : "The output name that will be used when we switch to the escape stage"
	EscDelay(integer) : "Escape Delay" : 0 : "The delay in seconds that will be used before calling the output"
	
	ResActivator(target_destination) : "Reset Target" : : "Entity to call an output on when a new round starts"
	ResOutput(string) : "Reset Output" : : "The output name that will be used when a new round starts"
	ResDelay(integer) : "Reset Delay" : 0 : "The delay in seconds that will be used before calling the output"
	
]

@PointClass color( 255 255 0 ) = infect_needsspawn :
"The Infection Needs system spawnpoint. Place ABOVE the ground"
[
]

@PointClass color( 255 255 0 ) = infect_propspawn :
"The Infection Prop spawnpoint. Place ABOVE the ground"
[
]

@SolidClass color( 255 255 0 ) = infect_trigger_goal :
"The Stage Four Goal. Use like you would a trigger, and place" +
"it in the safe area."
[
]

infect_control
There should only be one of these on a map.
infect_control allows interaction between the map and the gamemode, but due to restrictions (and my inability to find anything on adding outputs), the normal Input/Output system won't work completely. I have made a workaround, which is included in the code and above FGD. Here is how you use it:

infect_needsspawn
A very simple entity. Food and water (water bottle and orange) will spawn here (as defined in needs.lua). Make sure this is above the ground by a lot.

infect_propspawn
Another simple entity. Random props will spawn here (as defined in propreg.lua). Again, this must be above the ground by a lot.