Each bot starts from a point randomly selected by the arena.
At each turn, bots are asked to grow one square. they can choose the direction.
If a bot strikes a cell already taken by its trail or that of another, it loses.
It is not turn-based, bots are playinig simultaneously, so they can lose by choosing the same destination cell as another snake.
Example:
| 9 | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 8 | |||||||||
| 7 | |||||||||
| 6 | |||||||||
| 5 | |||||||||
| 4 | oO | oO | |||||||
| 3 | |||||||||
| 2 | |||||||||
| 1 | |||||||||
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
If in the same turn the green snake and the red snake decide to go respectively to the left and to the right, they will telescope and both will lose.
| 9 | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 8 | |||||||||
| 7 | |||||||||
| 6 | |||||||||
| 5 | |||||||||
| 4 | ): :( | ||||||||
| 3 | |||||||||
| 2 | |||||||||
| 1 | |||||||||
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
When a snake dies, (when a bot loses) its tail is erased and cells taken by it become free for snakes still alive.
The game ends when there are less than two snakes left
The arena does send http (s) requests to the bots.
The arena (this site) sends the following exemple message to your bot:
{"game-id":"1679","action":"init","game":"tron","board":"","players":4,"player-index":2}
Your bot must respond with an array in json format, like this:
{"name":"botName"}
The arena does not currently verify this response, the init step has been inserted to ensure compatibility with Bolosseum. If your bot answers a blank page at this stage (action = init), it will work as part of botsarena.
Exemple of arena's message send on the first lap:
Exemple of arena's message send after some laps:
{"game-id":"1680","action":"play-turn","game":"tron","board":[[[687,110],[687,111],[686,111],[686,110],[686,109],[686,108],[686,107],[685,107],[685,108],[685,109],[684,109],[684,110],[684,111],[684,112],[684,113],[683,113],[682,113],[681,113],[681,114],[681,115],[681,116],[680,116],[680,117],[679,117],[679,116],[679,115],[679,114],[679,113],[679,112],[679,111],[679,110],[679,109],[678,109],[678,108],[677,108],[676,108],[676,107],[676,106],[676,105],[676,104],[676,103],[675,103],[674,103],[674,102],[673,102],[672,102],[672,101],[671,101],[670,101],[669,101],[669,102],[669,103],[669,104],[669,105],[669,106],[669,107],[668,107],[668,108],[668,109],[668,110],[668,111],[668,112],[667,112],[667,111],[667,110],[666,110],[666,109],[666,108],[665,108],[664,108],[664,107],[664,106],[663,106],[663,107],[663,108],[662,108],[661,108],[660,108],[660,107],[659,107],[659,106],[658,106],[657,106],[657,105],[657,104],[656,104],[656,103],[655,103],[655,102],[655,101],[654,101],[654,102],[654,103],[654,104],[653,104],[653,103],[653,102],[653,101],[653,100],[652,100],[651,100],[651,101],[651,102],[651,103],[651,104],[650,104],[650,105],[650,106],[649,106],[649,105],[648,105]],[[100,225],[100,226],[100,227],[100,228],[100,229],[100,230],[100,231],[99,231],[98,231],[98,232],[97,232],[96,232],[96,231],[96,230],[96,229],[96,228],[96,227],[96,226],[96,225],[96,224],[96,223],[95,223],[95,222],[94,222],[94,221],[94,220],[93,220],[92,220],[92,219],[92,218],[92,217],[92,216],[92,215],[91,215],[91,214],[90,214],[89,214],[89,213],[89,212],[88,212],[88,213],[88,214],[87,214],[87,213],[86,213],[86,214],[86,215],[85,215],[85,214],[84,214],[84,215],[83,215],[83,216],[83,217],[82,217],[82,216],[81,216],[81,215],[80,215],[80,216],[79,216],[79,215],[79,214],[78,214],[77,214],[77,213],[77,212],[76,212],[75,212],[75,211],[75,210],[75,209],[74,209],[74,210],[74,211],[73,211],[73,210],[72,210],[72,209],[71,209],[71,210],[70,210],[70,209],[69,209],[68,209],[68,210],[68,211],[67,211],[67,210],[67,209],[67,208],[66,208],[66,207],[66,206],[66,205],[66,204],[66,203],[65,203],[65,204],[64,204],[64,203],[63,203],[63,204],[63,205],[63,206],[62,206],[61,206],[61,207],[60,207],[60,208],[59,208]]],"player-index":0,"players":2}
Following fields are as in the previous paragraph:
Not same fields are:
It is contained on "board" field. All the cells taken by each player are writted in.
It is composed of several subarrays / subobjects (depending on your programming language). the sub-tables haved the following form:JSON form is as follows:
[
[
[x1,y1],[x2,y2],[x3,y3]
],
[
(...)
]
Trails'order on this table is the same as Player's order. So, your "snake" has the trail corresponding with player-index. (First player-index value is 0).
coordinate's are from the head to the trail. Bots grow by moving their heads.
It returns direction it wants on a JSON array.
4 possibilies:
{"play":"x+"}
{"play":"x-"}
{"play":"y+"}
{"play":"y-"}
The way to note the directions seems fairly explicit for me to not explain.
The scoring (EHLO classification) remains on a logic of duels, although this game can contain more than two bots per game. The score is changed as the game happens each time a bot dies:
Unfortunately no tools yet. It will come in the weeks to come, maybe in the form of a swagger interface
And I must also develop an AI less stupid than stupid IA, because currently as it commits suicide too fast, it does not allow to test the arena nor a more intelligent bot.
ent