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|
use arrayvec::ArrayVec;
use crate::geometry::*;
#[derive(Debug, PartialEq, Eq, Clone)]
pub struct Player {
pub moves_score: i32,
pub active_worm: usize,
pub select_moves: u8,
pub worms: ArrayVec<[Worm; 3]>,
}
#[derive(Debug, PartialEq, Eq, Clone)]
pub struct Worm {
pub id: i32,
pub health: i32,
pub position: Point2d<i8>,
pub weapon_damage: i32,
pub weapon_range: u8,
pub bombs: u8
}
impl Player {
pub fn find_worm_position(&self, id: i32) -> Option<usize> {
self.worms
.iter()
.position(|w| w.id == id)
}
pub fn find_worm(&self, id: i32) -> Option<&Worm> {
self.worms
.iter()
.find(|w| w.id == id)
}
pub fn find_worm_mut(&mut self, id: i32) -> Option<&mut Worm> {
self.worms
.iter_mut()
.find(|w| w.id == id)
}
pub fn active_worm(&self) -> Option<&Worm> {
self.worms.get(self.active_worm)
}
pub fn active_worm_mut(&mut self) -> Option<&mut Worm> {
self.worms.get_mut(self.active_worm)
}
pub fn health(&self) -> i32 {
self.worms
.iter()
.map(|w| w.health)
.sum()
}
pub fn clear_dead_worms(&mut self) {
for worm_index in (0..self.worms.len()).rev() {
if self.worms[worm_index].health <= 0 {
self.worms.remove(worm_index);
if self.active_worm >= worm_index {
self.active_worm = if self.active_worm > 0 {
self.active_worm - 1
} else if self.worms.len() > 0 {
self.worms.len() - 1
} else {
0
};
}
}
}
}
pub fn next_active_worm(&mut self) {
self.active_worm = (self.active_worm + 1).checked_rem(self.worms.len()).unwrap_or(0);
}
fn health_score(&self) -> i32 {
self.health() / 3
}
pub fn score(&self) -> i32 {
self.moves_score + self.health_score()
}
}
#[cfg(test)]
mod test {
use super::*;
#[test]
fn clear_dead_worms_after_active_worm() {
let mut worms = ArrayVec::new();
worms.push(Worm {
id: 1,
health: 50,
position: Point2d::new(0, 0),
weapon_damage: 5,
weapon_range: 5,
bombs: 0
});
worms.push(Worm {
id: 2,
health: 10,
position: Point2d::new(0, 0),
weapon_damage: 5,
weapon_range: 5,
bombs: 0
});
worms.push(Worm {
id: 3,
health: -2,
position: Point2d::new(0, 0),
weapon_damage: 5,
weapon_range: 5,
bombs: 0
});
let mut player = Player {
active_worm: 1,
moves_score: 0,
select_moves: 0,
worms
};
player.clear_dead_worms();
assert_eq!(2, player.worms.len());
assert_eq!(1, player.active_worm);
assert_eq!(1, player.worms[0].id);
assert_eq!(2, player.worms[1].id);
}
#[test]
fn clear_dead_worms_before_active_worm() {
let mut worms = ArrayVec::new();
worms.push(Worm {
id: 1,
health: 0,
position: Point2d::new(0, 0),
weapon_damage: 5,
weapon_range: 5,
bombs: 0
});
worms.push(Worm {
id: 2,
health: 10,
position: Point2d::new(0, 0),
weapon_damage: 5,
weapon_range: 5,
bombs: 0
});
worms.push(Worm {
id: 3,
health: 2,
position: Point2d::new(0, 0),
weapon_damage: 5,
weapon_range: 5,
bombs: 0
});
let mut player = Player {
active_worm: 1,
moves_score: 0,
worms,
select_moves: 0,
};
player.clear_dead_worms();
assert_eq!(2, player.worms.len());
assert_eq!(0, player.active_worm);
assert_eq!(2, player.worms[0].id);
assert_eq!(3, player.worms[1].id);
}
#[test]
fn clear_dead_worms_before_active_worm_wrapping() {
let mut worms = ArrayVec::new();
worms.push(Worm {
id: 1,
health: 0,
position: Point2d::new(0, 0),
weapon_damage: 5,
weapon_range: 5,
bombs: 0
});
worms.push(Worm {
id: 2,
health: 10,
position: Point2d::new(0, 0),
weapon_damage: 5,
weapon_range: 5,
bombs: 0
});
worms.push(Worm {
id: 3,
health: 2,
position: Point2d::new(0, 0),
weapon_damage: 5,
weapon_range: 5,
bombs: 0
});
let mut player = Player {
active_worm: 0,
moves_score: 0,
worms,
select_moves: 0
};
player.clear_dead_worms();
assert_eq!(2, player.worms.len());
assert_eq!(1, player.active_worm);
assert_eq!(2, player.worms[0].id);
assert_eq!(3, player.worms[1].id);
}
#[test]
fn clear_last_dead_worm() {
let mut worms = ArrayVec::new();
worms.push(Worm {
id: 1,
health: -10,
position: Point2d::new(0, 0),
weapon_damage: 5,
weapon_range: 5,
bombs: 0
});
let mut player = Player {
active_worm: 0,
moves_score: 0,
worms,
select_moves: 0
};
player.clear_dead_worms();
assert_eq!(0, player.worms.len());
// active worm is undefined in this case, but clearing the worms must not panic.
}
}
|
