79 lines
2.2 KiB
Rust
79 lines
2.2 KiB
Rust
use bevy::prelude::*;
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use bevy_mod_raycast::{RayCastMethod, RayCastSource};
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use crate::{pillar::UnlitPillar, player::*};
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pub struct MyRaycastSet;
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pub struct Camera;
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pub fn spawn_camera(commands: &mut Commands) {
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commands
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.spawn_bundle(PerspectiveCameraBundle::default())
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.insert(Camera)
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.insert(RayCastSource::<MyRaycastSet>::new());
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}
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pub fn camera_follow_player(
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player: Query<(&Transform, &Player), Without<Camera>>,
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mut camera: Query<(&mut Transform, &Camera), Without<Player>>,
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) {
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let player_pos = if let Some(player) = player.iter().next() {
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player.0.translation
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} else {
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return;
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};
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for (mut trans, _) in camera.iter_mut() {
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trans.translation = player_pos + Vec3::new(-100.0, 200.0, 100.0);
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trans.look_at(player_pos, Vec3::Y);
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}
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}
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// update our `RayCastSource` with the current cursor position every frame.
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pub fn update_raycast_with_cursor(
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mut cursor: EventReader<CursorMoved>,
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mut query: Query<&mut RayCastSource<MyRaycastSet>>,
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) {
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for mut pick_source in query.iter_mut() {
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// Grab the most recent cursor event if it exists:
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if let Some(cursor_latest) = cursor.iter().last() {
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pick_source.cast_method = RayCastMethod::Screenspace(cursor_latest.position);
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}
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}
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}
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#[derive(Default)]
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pub struct MouseCoords {
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pub raw: Vec3,
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pub processed: Vec3,
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}
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// Update our `RayCastSource` with the current cursor position every frame.
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pub fn update_raw_mouse_coords(
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query: Query<&RayCastSource<MyRaycastSet>>,
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mut coords: ResMut<MouseCoords>,
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) {
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for pick_source in query.iter() {
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if let Some((_, intersection)) = pick_source.intersect_top() {
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coords.raw = intersection.position();
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}
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}
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}
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/// checks for pillars and stuff
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pub fn update_processed_mouse_coords(
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query: Query<(&Transform, &UnlitPillar)>,
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mut coords: ResMut<MouseCoords>,
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) {
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let mut dis = 20.0;
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coords.processed = coords.raw;
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for (trans, _) in query.iter() {
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let d = trans.translation.distance(coords.raw);
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if d < dis {
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coords.processed = trans.translation;
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dis = d;
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}
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}
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}
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