157 lines
4.4 KiB
Rust
157 lines
4.4 KiB
Rust
use godot::{classes::AudioStreamPlayer3D, prelude::*};
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use serde::{Deserialize, Serialize};
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use crate::{
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ball::Ball,
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game_manager::{Game, GameOption},
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net::{network_manager::NetworkManager, util::cast_ray},
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player::{DamageSource, IPlayer},
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};
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pub trait Weapon {
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fn shoot(&mut self, player_rid: Rid, player_id: u16, to: Vector3, deal_damage: bool);
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fn get_type(&self) -> WeaponType;
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}
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#[derive(Debug, Clone, Copy, Deserialize, Serialize, PartialEq, PartialOrd)]
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pub enum WeaponType {
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Raygun,
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Ball,
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}
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#[derive(GodotClass)]
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#[class(base=Node3D, init)]
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pub struct Raygun {
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#[export]
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sound_emitter: Option<Gd<AudioStreamPlayer3D>>,
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#[export]
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bullet_prefab: Option<Gd<PackedScene>>,
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#[export]
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bullet_source: Option<Gd<Node3D>>,
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base: Base<Node3D>,
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}
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#[godot_dyn]
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impl Weapon for Raygun {
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fn shoot(&mut self, player: Rid, player_id: u16, to: Vector3, deal_damage: bool) {
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if let Some(emitter) = &mut self.sound_emitter {
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emitter.play();
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}
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if let Some(source) = &self.bullet_source {
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let target = cast_ray(
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source.get_global_position(),
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to,
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self.base().get_world_3d(),
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Array::from_iter(vec![player]),
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);
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let dir = (to - source.get_global_position()).normalized();
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let beam_end = target
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.as_ref()
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.map(|r| r.position)
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.unwrap_or(source.get_global_position() + dir * 100.);
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if let Some(prefab) = &self.bullet_prefab {
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let mut bullet = prefab.instantiate_as::<Beam>();
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bullet.bind_mut().source = Some(source.get_global_position());
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bullet.bind_mut().target = Some(beam_end);
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self.run_deferred(move |_| {
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if let Some(mut game) = Game::singleton()
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&& let Some(map) = &mut game.bind_mut().current_map
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{
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map.add_child(&bullet);
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}
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});
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}
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if deal_damage && let Some(target) = target {
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if let Ok(mut player) = target.collider.clone().try_dynify::<dyn IPlayer>() {
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self.run_deferred(move |_| {
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if let Some(game) = Game::singleton()
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&& game.bind().opts.is_true(GameOption::FriendlyFire)
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{
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player.dyn_bind_mut().take_damage(
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DamageSource::Player(player_id),
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100,
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true,
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);
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}
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});
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} else if let Ok(mut ball) = target.collider.try_cast::<Ball>() {
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let prev_velocity = ball.bind().base().get_linear_velocity();
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ball.bind_mut()
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.base_mut()
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.set_linear_velocity(prev_velocity + dir * 10.);
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}
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}
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}
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}
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fn get_type(&self) -> WeaponType {
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WeaponType::Raygun
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}
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}
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#[derive(GodotClass)]
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#[class(base=Node3D, init)]
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pub struct Beam {
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pub source: Option<Vector3>,
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pub target: Option<Vector3>,
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distance: f32,
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girth: f32,
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base: Base<Node3D>,
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}
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#[godot_api]
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impl INode3D for Beam {
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fn ready(&mut self) {
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if let (Some(target), Some(source)) = (self.target, self.source) {
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let midway_point = (target + source) / 2.;
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self.distance = source.distance_to(target);
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self.girth = 1.;
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self.scale();
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self.base_mut().look_at_from_position(source, target);
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self.base_mut().set_global_position(midway_point);
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}
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}
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fn process(&mut self, _delta: f32) {
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self.girth = self.girth.lerp(0., 0.07);
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self.scale();
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}
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}
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impl Beam {
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fn scale(&mut self) {
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let length = Vector3::BACK * self.distance;
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let girth_scale = (Vector3::UP + Vector3::RIGHT) * self.girth;
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self.base_mut().set_scale(length + girth_scale);
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if self.girth < 0.01 {
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self.base_mut().queue_free();
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}
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}
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}
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#[derive(GodotClass)]
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#[class(base=Node3D, init)]
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pub struct BallWeapon {
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base: Base<Node3D>,
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}
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#[godot_dyn]
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impl Weapon for BallWeapon {
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fn shoot(&mut self, _: Rid, _: u16, _: Vector3, _: bool) {}
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fn get_type(&self) -> WeaponType {
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WeaponType::Ball
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}
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}
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