Battlesnake/Byte-snake-engine
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fix for rivers and bridges snake start positions (#85)

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* fix for rivers and bridges snake start positions

* update max player count, add unit test

* set player count to 12 (max for smallest size)

* fix: one of the 19x19 spawn points

* randomize snake placement at start positions

* randomly choose starts in quadrants

* fix: check that start positions are valid

* modify food placement to avoid hazards
This commit is contained in:
Torben 2022-06-28 14:41:01 -07:00 • committed by GitHub
parent f58df66e69
commit 9d6b1147cd
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GPG key ID: 4AEE18F83AFDEB23
5 changed files with 298 additions and 25 deletions
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45
maps/standard.go
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@ -54,34 +54,45 @@ func (m StandardMap) SetupBoard(initialBoardState *rules.BoardState, settings ru
func (m StandardMap) UpdateBoard(lastBoardState *rules.BoardState, settings rules.Settings, editor Editor) error {
rand := settings.GetRand(lastBoardState.Turn)
minFood := int(settings.MinimumFood)
foodSpawnChance := int(settings.FoodSpawnChance)
numCurrentFood := len(lastBoardState.Food)
if numCurrentFood < minFood {
placeFoodRandomly(rand, lastBoardState, editor, minFood-numCurrentFood)
return nil
}
if foodSpawnChance > 0 && (100-rand.Intn(100)) < foodSpawnChance {
placeFoodRandomly(rand, lastBoardState, editor, 1)
return nil
foodNeeded := checkFoodNeedingPlacement(rand, settings, lastBoardState)
if foodNeeded > 0 {
placeFoodRandomly(rand, lastBoardState, editor, foodNeeded)
}
return nil
}
func placeFoodRandomly(rand rules.Rand, b *rules.BoardState, editor Editor, n int) {
unoccupiedPoints := rules.GetUnoccupiedPoints(b, false)
func checkFoodNeedingPlacement(rand rules.Rand, settings rules.Settings, state *rules.BoardState) int {
minFood := int(settings.MinimumFood)
foodSpawnChance := int(settings.FoodSpawnChance)
numCurrentFood := len(state.Food)
if len(unoccupiedPoints) < n {
n = len(unoccupiedPoints)
if numCurrentFood < minFood {
return minFood - numCurrentFood
}
if foodSpawnChance > 0 && (100-rand.Intn(100)) < foodSpawnChance {
return 1
}
rand.Shuffle(len(unoccupiedPoints), func(i int, j int) {
unoccupiedPoints[i], unoccupiedPoints[j] = unoccupiedPoints[j], unoccupiedPoints[i]
return 0
}
func placeFoodRandomly(rand rules.Rand, b *rules.BoardState, editor Editor, n int) {
unoccupiedPoints := rules.GetUnoccupiedPoints(b, false)
placeFoodRandomlyAtPositions(rand, b, editor, n, unoccupiedPoints)
}
func placeFoodRandomlyAtPositions(rand rules.Rand, b *rules.BoardState, editor Editor, n int, positions []rules.Point) {
if len(positions) < n {
n = len(positions)
}
rand.Shuffle(len(positions), func(i int, j int) {
positions[i], positions[j] = positions[j], positions[i]
})
for i := 0; i < n; i++ {
editor.AddFood(unoccupiedPoints[i])
editor.AddFood(positions[i])
}
}