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use VecDeque in intended direction
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This commit is contained in:
Max Känner 2025-01-21 19:26:43 +01:00
parent 2f2b7ac11e
commit 5bb7476af6
1 changed files with 18 additions and 13 deletions
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31
battlesnake/src/types/simulation.rs
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@ -60,7 +60,7 @@ impl From<&Request> for Board {
board.free.set(index, false); board.free.set(index, false);
} }
let snake = Snake { let snake = Snake {
body: snake.body.iter().copied().collect(), body: snake.body.iter().rev().copied().collect(),
id: u8::try_from(id).unwrap_or(u8::MAX), id: u8::try_from(id).unwrap_or(u8::MAX),
health: snake.health, health: snake.health,
}; };
@ -206,9 +206,7 @@ impl Board {
|(_, action)| *action, |(_, action)| *action,
); );
let new_head = snake.head().wrapping_apply(action); let new_head = snake.head().wrapping_apply(action);
let snake = &mut self.snakes[i]; self.snakes[i].advance(new_head);
snake.body.push_front(new_head);
snake.body.pop_back();
} }
} }
@ -244,9 +242,7 @@ impl Board {
fn feed_snakes_standard(&mut self) { fn feed_snakes_standard(&mut self) {
if self.constrictor { if self.constrictor {
for snake in &mut self.snakes { for snake in &mut self.snakes {
snake.health = 100; snake.feed();
let tail = snake.tail();
snake.body.push_back(tail);
} }
} else { } else {
let mut eaten_food = vec![]; let mut eaten_food = vec![];
@ -256,10 +252,7 @@ impl Board {
let head_index = self.coord_to_linear(head); let head_index = self.coord_to_linear(head);
if self.food[head_index] { if self.food[head_index] {
eaten_food.push(head_index); eaten_food.push(head_index);
let snake = &mut self.snakes[i]; self.snakes[i].feed();
snake.health = 100;
let tail = snake.tail();
snake.body.push_back(tail);
} }
} }
} }
@ -380,16 +373,28 @@ struct Snake {
impl Snake { impl Snake {
pub fn head(&self) -> Coord { pub fn head(&self) -> Coord {
self.body.front().copied().unwrap_or_else(|| { self.body.back().copied().unwrap_or_else(|| {
error!("Snake without a head: {self:?}"); error!("Snake without a head: {self:?}");
Coord { x: 0, y: 0 } Coord { x: 0, y: 0 }
}) })
} }
pub fn tail(&self) -> Coord { pub fn tail(&self) -> Coord {
self.body.back().copied().unwrap_or_else(|| { self.body.front().copied().unwrap_or_else(|| {
error!("Snake without a tail: {self:?}"); error!("Snake without a tail: {self:?}");
Coord { x: 0, y: 0 } Coord { x: 0, y: 0 }
}) })
} }
pub fn advance(&mut self, head: Coord) {
self.body.push_back(head);
self.body.pop_front();
self.health = 100;
}
pub fn feed(&mut self) {
if let Some(tail) = self.body.front() {
self.body.push_front(*tail);
}
}
} }