use cgmath::Point3;
use rapier2d::{
	dynamics::{RigidBody, RigidBodyBuilder, RigidBodyHandle},
	geometry::{ColliderBuilder, ColliderHandle},
};

use crate::{
	physics::util,
	render::{Sprite, SpriteTexture},
};

pub struct ProjectileBuilder {
	pub rigid_body: RigidBodyBuilder,
	pub collider: ColliderBuilder,
	pub sprite: SpriteTexture,
	pub lifetime: f32,
	pub size: f32,
	pub damage: f32,
}

impl ProjectileBuilder {
	pub fn build(self, r: RigidBodyHandle, c: ColliderHandle) -> Projectile {
		Projectile {
			rigid_body: r,
			collider: c,
			sprite: self.sprite,
			lifetime: self.lifetime,
			size: self.size,
			damage: self.damage,
		}
	}
}

#[derive(Debug)]
pub struct Projectile {
	pub rigid_body: RigidBodyHandle,
	pub collider: ColliderHandle,
	pub sprite: SpriteTexture,
	pub lifetime: f32,
	pub size: f32,
	pub damage: f32,
}

impl Projectile {
	pub fn tick(&mut self, t: f32) {
		self.lifetime -= t;
	}

	pub fn is_expired(&self) -> bool {
		return self.lifetime < 0.0;
	}

	pub fn get_sprite(&self, r: &RigidBody) -> Sprite {
		let pos = util::rigidbody_position(r);
		let ang = util::rigidbody_angle(r);
		Sprite {
			texture: self.sprite.clone(),
			pos: Point3 {
				x: pos.x,
				y: pos.y,
				z: 1.0,
			},
			size: self.size,
			angle: ang,
			children: None,
		}
	}
}