Galactica/crates/gameobject/src/ship.rs

use rand::Rng;

use crate::{OutfitSet, Projectile};
use galactica_content as content;

#[derive(Debug)]
pub struct Ship {
	pub handle: content::ShipHandle,
	pub faction: content::FactionHandle,
	pub outfits: OutfitSet,

	// TODO: unified ship stats struct, like space
	// TODO: unified outfit stats struct: check
	pub hull: f32,
}

impl Ship {
	pub fn new(
		ct: &content::Content,
		handle: content::ShipHandle,
		faction: content::FactionHandle,
		outfits: OutfitSet,
	) -> Self {
		let s = ct.get_ship(handle);
		Ship {
			handle: handle,
			faction,
			outfits,
			hull: s.hull,
		}
	}

	/// Has this ship been destroyed?
	pub fn is_destroyed(&self) -> bool {
		self.hull <= 0.0
	}

	/// Called whenever a projectile hits this ship.
	/// Returns true if that projectile should be destroyed and false otherwise.
	pub fn handle_projectile_collision(&mut self, ct: &content::Content, p: &Projectile) -> bool {
		let f = ct.get_faction(self.faction);
		let r = f.relationships.get(&p.faction).unwrap();
		match r {
			content::Relationship::Hostile => {
				// TODO: implement death and spawning, and enable damage
				//s.hull -= p.damage;
				return true;
			}
			_ => return false,
		}
	}

	pub fn fire_guns(&mut self) -> Vec<(Projectile, content::GunPoint)> {
		self.outfits
			.iter_guns_points()
			.filter(|(g, _)| g.cooldown <= 0.0)
			.map(|(g, p)| {
				let mut rng = rand::thread_rng();
				g.cooldown = g.kind.rate + &rng.gen_range(-g.kind.rate_rng..=g.kind.rate_rng);

				(
					Projectile {
						content: g.kind.projectile.clone(),
						lifetime: g.kind.projectile.lifetime
							+ rng.gen_range(
								-g.kind.projectile.lifetime_rng..=g.kind.projectile.lifetime_rng,
							),
						faction: self.faction,
					},
					p.clone(),
				)
			})
			.collect()
	}
}