From e8e81e8e522afee9cc18fdf9c4722e21330772c0 Mon Sep 17 00:00:00 2001
From: yuni <hut@hut.pm>
Date: Sat, 16 Nov 2024 19:55:42 +0100
Subject: [PATCH] WIP crisper camera controls (apply rotation)

---
 src/actor.rs  | 11 +++++++++
 src/camera.rs | 67 ++++++++++++++++++++++++++++++++++++++++++++++++++-
 src/cmd.rs    |  1 +
 3 files changed, 78 insertions(+), 1 deletion(-)

diff --git a/src/actor.rs b/src/actor.rs
index f476bf3..cf1a9b0 100644
--- a/src/actor.rs
+++ b/src/actor.rs
@@ -38,6 +38,7 @@ impl Plugin for ActorPlugin {
                 update_physics_lifeforms.run_if(game_running),
                 update_power.run_if(game_running),
                 handle_gravity.run_if(game_running),
+                handle_wants_rotation.run_if(game_running),
                 handle_wants_maxrotation.run_if(game_running),
                 handle_wants_maxvelocity
                     .run_if(game_running)
@@ -176,6 +177,8 @@ pub struct WantsMaxVelocity(pub f64);
 #[derive(Component)]
 pub struct WantsToLookAt(pub String);
 #[derive(Component)]
+pub struct WantsRotation(pub DQuat);
+#[derive(Component)]
 pub struct WantsMatchVelocityWith(pub String);
 #[derive(Component)]
 pub struct Identifier(pub String);
@@ -703,6 +706,14 @@ fn handle_wants_maxvelocity(
     }
 }
 
+fn handle_wants_rotation(
+    mut q_actor: Query<(&mut Rotation, &WantsRotation)>,
+) {
+    for (mut rot, setrot) in &mut q_actor {
+        **rot = setrot.0;
+    }
+}
+
 fn handle_wants_lookat(
     mut query: Query<
         (
diff --git a/src/camera.rs b/src/camera.rs
index 5390569..788dd71 100644
--- a/src/camera.rs
+++ b/src/camera.rs
@@ -443,8 +443,73 @@ fn manage_player_actor(
     }
 }
 
-#[allow(clippy::too_many_arguments)]
 pub fn apply_input_to_player(
+    settings: Res<var::Settings>,
+    mut commands: Commands,
+    mut q_player: Query<
+        (Entity, &Rotation, Option<&mut actor::WantsRotation>),
+        With<actor::PlayerCamera>,
+    >,
+    mut mouse_events: EventReader<MouseMotion>,
+    key_input: Res<ButtonInput<KeyCode>>,
+    q_windows: Query<&Window, With<PrimaryWindow>>,
+) {
+    let player = q_player.get_single_mut();
+    if player.is_err() {
+        return;
+    }
+    let (entity, rot, setrot) = player.unwrap();
+
+    let (win_res_x, win_res_y): (f32, f32);
+    if let Ok(window) = &q_windows.get_single() {
+        win_res_x = window.resolution.width();
+        win_res_y = window.resolution.height();
+    } else {
+        win_res_x = 1920.0;
+        win_res_y = 1050.0;
+    }
+
+    // Determine rotation delta
+    let mut pitch_yaw_rot = Vec3::ZERO;
+    let mut mouse_delta = Vec2::ZERO;
+    for mouse_event in mouse_events.read() {
+        mouse_delta += mouse_event.delta;
+    }
+    if mouse_delta != Vec2::ZERO {
+        if key_input.pressed(settings.key_rotate) {
+            pitch_yaw_rot[2] += 2.0 * mouse_delta.x / win_res_x;
+        } else {
+            pitch_yaw_rot[0] += 2.0 * mouse_delta.y / win_res_y;
+            pitch_yaw_rot[1] -= 2.0 * mouse_delta.x / win_res_x;
+        }
+    }
+
+    // Apply rotation to player
+    if pitch_yaw_rot != Vec3::ZERO {
+        let rot_offset = DQuat::from_euler(
+            EulerRot::XYZ,
+            pitch_yaw_rot[0] as f64,
+            pitch_yaw_rot[1] as f64,
+            pitch_yaw_rot[2] as f64,
+        );
+        let rot_current = if let Some(setrot) = &setrot {
+            setrot.0
+        } else {
+            **rot
+        };
+        let rot_target = rot_current * rot_offset;
+        if let Some(mut setrot) = setrot {
+            setrot.0 = rot_target;
+        } else {
+            commands
+                .entity(entity)
+                .try_insert(actor::WantsRotation(rot_target));
+        }
+    }
+}
+
+#[allow(clippy::too_many_arguments)]
+pub fn apply_input_to_player_old(
     time: Res<Time>,
     mut commands: Commands,
     settings: Res<var::Settings>,
diff --git a/src/cmd.rs b/src/cmd.rs
index 7bcc06f..215c724 100644
--- a/src/cmd.rs
+++ b/src/cmd.rs
@@ -1135,6 +1135,7 @@ fn spawn_entities(
             actor.insert(actor::Player);
             actor.insert(actor::PlayerCamera);
             actor.insert(hud::AugmentedRealityOverlayBroadcaster);
+            //actor.insert(actor::WantsRotation(Quat::IDENTITY));
             ew_updateavatar.send(hud::UpdateAvatarEvent);
         }
         if state.is_sun {