Battlesnake/Byte-snake-engine
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Ensure snakes eating on their last turn survive!

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This commit is contained in:
Brad Van Vugt 2020-08-31 13:18:03 -07:00
parent e804ec9f17
commit a342f87ed6
2 changed files with 76 additions and 12 deletions
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23
standard.go
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@ -218,18 +218,11 @@ func (r *StandardRuleset) CreateNextBoardState(prevState *BoardState, moves []Sn
}
// TODO: LOG?
err = r.maybeEliminateSnakes(nextState)
if err != nil {
return nil, err
}
// TODO
// bvanvugt: we specifically want this to happen before elimination
// so that head-to-head collisions on food still remove the food.
// It does create an artifact though, where head-to-head collisions
// of equal length actually show length + 1
// TODO: LOG?
// bvanvugt: We specifically want this to happen before elimination for two reasons:
// 1) We want snakes to be able to eat on their very last turn and still survive.
// 2) So that head-to-head collisions on food still remove the food.
// This does create an artifact though, where head-to-head collisions
// of equal length actually show length + 1 and full health, as if both snakes ate.
err = r.maybeFeedSnakes(nextState)
if err != nil {
return nil, err
@ -241,6 +234,12 @@ func (r *StandardRuleset) CreateNextBoardState(prevState *BoardState, moves []Sn
return nil, err
}
// TODO: LOG?
err = r.maybeEliminateSnakes(nextState)
if err != nil {
return nil, err
}
return nextState, nil
}