Cooperative Mode

When there are multiple tanks of the same tank in the battle, they may cooperate. It will cause several changes in game mechanics.

Scoring System

Points are awarded in the same way as in standard mode however, all of them will be summed up for each team. The team that has the highest amount of points wins.

Collisions

When your tank hit an ally from the team, it will not be reported by state.collisions.enemy flag, but you will see that state.collisions.ally has changed to true in tank's state object:

state = {
  ...
  collisions: {
    enemy: false,
    ally: true,
    wall: false
  },
  ...
}

Radar

The radar detects closest enemy and closest ally separately. Those information is available at state.radar.enemy and state.radar.ally of state object:

state = {
  ...
  radar: {
    ...
    enemy: {
      id: 4,
      x: 39.5,
      y: 74.3,
      angle: 45.2,
      speed: 3.2,
      energy: 43
    },
    ally: {
      id: 4,
      x: 50.2,
      y: 90.1,
      angle: 13.1,
      speed: 2,
      energy: 90
    }
  }
  ...
}

Team Information

You will receive all informations about your team on initialization in info object

tank.init(function(settings, info) {
  console.log(info.team.mates); // print IDs of team members
})

List of team members has always the same order. If you would like to assign different roles to each member of the team you can base on this list. For example, assign algorithm #1 to info.team.mates[0], algorithm #2 to info.team.mates[1], etc…

Communications

Tanks from the same team can communicate. Messages can be any JavaScript object and are broadcast to all members of the team. However, a tank cannot send a message to itself. All messages are not delivered immediately but in the next step of processing loop.

To send a message, add it to control.OUTBOX array:

control.OUTBOX.push({
  foo: "bar"
});

All your team mates will receive it in state.radar.inbox: