Botlet Spontaneously combusts, destroyed by energy it should have collected.

[Pabreetzio]

I've noticed bots spontaneously disappear when no other bots were anywhere around. I noticed that there was energy in the square next to the bot when it happened. I suspect it may be an issue resolving what happens when the bot should be picking up energy. When it happens there is no indicator showing the bot's demise, merely the energy that the bot should have collected.

[Pharylon]

I've seen this too, but I'm not sure it's a bug. As far as I can tell, this is happening when a bot tries to move into an Energy square. That can happen if energy spawns right next to a bot. That leaves the bot in the situation where it will collect the energy next turn if it just doesn't move. However, if the bot tries to move into the energy's square, the bot just sort of disappears, because two objects can't occupy the same space, and energy seems to "win".

[Pharylon]

Actually, I guess that would still be a bug. There should be a death marker regardless.

[Pabreetzio]

Seemed like a one-liner and should be fixed now. You were right that it happened when the bot tried to move to the square where the energy was. We were updating the energy count but not updating the square the bot move to. The bot was collecting energy, disappearing, and the energy would stay. Or did the bot teleport home o.O?

[Pharylon]

Uh-oh! Things are worse now! I added a line note here but the basic problem is now if two bots try and move onto energy at once, instead of them both disappearing, the first one who's moves get processed gets the energy, and then both bots die! We need a better long term solution, but for now we need to revert this change, so at least the game is symmetric.

I've commited a change that does just that.

[Pabreetzio]

Thanks, and good catch. I thought I noticed Blue winning more battles than it should.

I think that we'll just adopt this bug as a common law rule for the game for this tournament.

What is the correct behavior? Here are some possibilities:

• The energy should either be consumed or destroyed depending on whether one bot or many bots move onto it. If one bot from one side move onto it the energy is consumed, and moves/battles resolved in the normal way. Two bots collide, destroying the energy in the process and are both dead. After the energy is collected battles are decided in the normal way. Energy collected this way allows a bot to spawn on the same turn a bot moves onto the energy square, so in some circumstances a player's energy level between requests for moves never shows greater than 0. If the bot stands in the same place, next to energy, without moving, then energy is collected normally, which is to say after the spawn opportunity has passed. So if the bot stands still instead of moving onto the energy the player will see their energy count one higher the next turn, then they'll see a bot spawn the turn after that.
• The Energy could only spawn in places that aren't next to any bots. If there are no spaces like that it skips spawning until the next time it would normally spawn.

Second item seems easier to explain. I'm leaning towards it. Just want to know if there are any other suggestions.

[Pharylon]

What about moving onto Energy ALWAYS kills botlets? They have to harvest it from a safe distance (the adjacent square).

I like this idea because it's a simple rule that applies no matter how many botlets are trying to move into the square.

[Pabreetzio]

I like that better than my first thought, though I'm still partial to it only spawning in locations that are not right next to a bot. One reason is that making energy kill bots introduces a new rule to beginners that's pretty basic to what they need to consider when going after energy: Don't actually touch it. It makes it harder for them to get to the point where they consider things like probability. It also makes the more advanced tactic of calculating potential energy spawn points less interesting because there are fewer spaces it can rule out. I'd like the more advanced players to get a bigger boost from realizing that there may only be 6 symmetric spots that aren't next to any bots and taking advantage of that knowledge to increase their odds of getting there first.

[Dubman25]

What about letting them both collect the energy?

[Pharylon]

So they would both collect energy and then die from being in the same space?