First, you must join #SaveThePlanet.

There will be a bot there (SaveThePlanet). It supports the following commands
in private message:

   REGISTER username password

username is any alphanum word
password is any string (suggest you stick to ASCII)

Return codes are 203 (user exists) or 101 (user created).

   LOGIN username hash

username is the username you registered with
hash is the hex SHA1 sum of game id concatenated with password. For example,
if the game ID is 7 and your password is foo, it's sha1_hex("7foo"). This is
so you can safely save your logs.


It supports the following commands in public:

   DONATE <sum>

Donate this much instantaneously to the climate change cause. This won't
benefit you directly unless the world ends!

   INVEST <sum>

Invest this much money in industry immediately. This will increase your
industry in time for the end of the current tick, at a payoff of about 1/30
subject to change. Industry correlates roughly 1:1 with cash per turn.

   CUTBACK <amount>

Destroy exactly this much industry. You get no cash in return, but you may
help stop the change in climate.

If you're the only player left, CUTBACK is probably advisable.


You can specify any number of these commands, semicolon seperated, on a line:

   DONATE 66; CUTBACK 43


The bot produces the following outputs:

   NEW <id>

New game is waiting for players with given ID (which will be alphanumeric).

   PLAYERS nick=user,nick=user,...

A list of players in this game, so that you can map betweens nicknames and
usernames.

   CLIMATE industry_factor=n;donation_factor=m;recovery_factor=k

This lists three of the variables that affect the game. See below for
mechanics.

   BEGIN

End of game header; first tick will happen soon.

   DISASTER type\[p=<player>[,props]\];...

A disaster occurred in player's country. Ooops! You can ignore this, as
changes will be reflected below. Note that meltdowns will destroy more than
just the player experiencing them.

   STATE type\[props\];type\[props\];...

The game state for this tick. CLIMATE tells you the tick number (game ends
after t=100 ticks currently with a good end) and climate state (s=probability
of disaster for each player in each tick).

For each player who still has a country it gives the i=industry amount,
d=donation state and c=cash pool.

   ENDTICK

This is the last message sent every time the game ticks.

   GOODEND

You saved the planet!

   BADEND

The planet melted down.

   RESULT <name>, <name>, ...

The rankings for the game that just ended.

   RESET

Game ended prematurely with no winners.



Current game mechanics:

The world has an "industry capacity" which is set to the initial average
industry count. Your probability of disaster on a tick is equal to

  climate_state*(2*your_industry+capacity)/(2*capacity+your_initial_industry))

In the event of a meltdown, the climate state is increased by approximately

   player_industry/capacity/#players


Each tick, you are given profit which is proportional to your industry count
(the constant of proportionality is randomly chosen for each game, and the
payout is random also). You can spend this profit on investment or
donations, or just save it.

The state of the world changes each tick by around

   industry_factor*industry - donation_factor*donations

it is then multiplied by recovery_factor.

A good end occurs when:
- 50 ticks have passed, or
- total industry is zero and climate state is < 0.1, or
- climate state is <= 0.

Scores in this case are:

  exp(average_improvement_amount*1.5/investment_payoff)/2

where average_improvement_amount is

  (((your_industry+your_cash/40)/your_initial_industry))^(1/ticks)-1

That is, roughly, the average amount of industry you gained per turn.

so in this case countries which make a profit will win.


If all contries melt down, the game will reach a "bad end", in which case
scores are given by:

  2*sqrt(your_total_donations/your_initial_industry/industry_production/ticks)

Imagine in this case that aliens come to help out, and reward those
countries which helped themselves.


Each day, every player's total score is added up.