From c799d94e0a7776eea9f5ca8e32d7aff1a3098e52 Mon Sep 17 00:00:00 2001
From: griffi-gh <prasol258@gmail.com>
Date: Fri, 16 Feb 2024 00:43:11 +0100
Subject: [PATCH] uwu

---
 kubi/src/client_physics.rs    | 27 +++++++++++++++++----------
 kubi/src/player_controller.rs | 22 ++++++++++++++++------
 2 files changed, 33 insertions(+), 16 deletions(-)

diff --git a/kubi/src/client_physics.rs b/kubi/src/client_physics.rs
index f2d9416..0edaa52 100644
--- a/kubi/src/client_physics.rs
+++ b/kubi/src/client_physics.rs
@@ -23,15 +23,17 @@ impl Default for GlobalClPhysicsConfig {
 
 //TODO: actors should be represented by a vertical line, not a point.
 //XXX: maybe a capsule? (or configurable hull?)
+//TODO: per block friction
+
 #[derive(Component)]
 pub struct ClPhysicsActor {
   pub disable: bool,
   pub offset: Vec3,
   pub forces: Vec3,
+  pub constant_forces: Vec3,
   pub velocity: Vec3,
   pub terminal_velocity: f32,
-  //TODO: this should be configurable per block
-  pub ground_friction: f32,
+  pub decel: Vec3,
   pub gravity_scale: f32,
   flag_ground: bool,
   flag_collision: bool,
@@ -42,6 +44,10 @@ impl ClPhysicsActor {
     self.forces += force;
   }
 
+  pub fn apply_constant_force(&mut self, force: Vec3) {
+    self.constant_forces += force;
+  }
+
   pub fn on_ground(&self) -> bool {
     self.flag_ground
   }
@@ -54,9 +60,11 @@ impl Default for ClPhysicsActor {
       disable: false,
       offset: vec3(0., 1.5, 0.),
       forces: Vec3::ZERO,
+      constant_forces: Vec3::ZERO,
       velocity: Vec3::ZERO,
       terminal_velocity: 40.,
-      ground_friction: 10.,
+      //constant deceleration, in ratio per second. e.g. value of 1 should stop the actor in 1 second.
+      decel: vec3(0., 0., 0.),
       gravity_scale: 1.,
       flag_ground: false,
       flag_collision: false,
@@ -145,16 +153,15 @@ pub fn update_client_physics_late(
     }
 
     //Apply velocity
-    actor_position += actor.velocity * dt.0.as_secs_f32();
+    actor_position += (actor.velocity + actor.constant_forces) * dt.0.as_secs_f32();
+    actor.constant_forces = Vec3::ZERO;
     actor_position += actor.offset;
     transform.0 = Mat4::from_scale_rotation_translation(scale, rotation.normalize(), actor_position);
 
-    //Apply friction
-    // if actor.flag_ground {
-    //   let actor_velocity = actor.velocity;
-    //   let actor_friction = actor.ground_friction;
-    //   actor.velocity -= (actor_velocity * actor_friction * dt.0.as_secs_f32()) * vec3(1., 0., 1.);
-    // }
+    //Apply "friction"
+    // let actor_velocity = actor.velocity;
+    // let actor_decel = actor.decel;
+    // actor.velocity -= actor_velocity * actor_decel * dt.0.as_secs_f32();
   }
   // for (_, mut transform) in (&controllers, &mut transforms).iter() {
   //   let (scale, rotation, mut translation) = transform.0.to_scale_rotation_translation();
diff --git a/kubi/src/player_controller.rs b/kubi/src/player_controller.rs
index aee4a49..bd0fbc7 100644
--- a/kubi/src/player_controller.rs
+++ b/kubi/src/player_controller.rs
@@ -86,12 +86,22 @@ fn update_movement(
         let right = Vec2::from_angle(-euler.0).extend(0.).xzy();
         let forward = Vec2::from_angle(-(euler.0 + PI/2.)).extend(0.).xzy();
 
-        actor.apply_force(ctl.speed * (
-          (forward * movement.z) +
-          (right * movement.x) +
-          //TODO: remove hardcoded jump force
-          (Vec3::Y * movement.y * 125. * (actor_on_ground as u8 as f32))
-        ));
+        //TODO: remove hardcoded jump force
+        // actor.apply_constant_force(ctl.speed * (
+        //   (forward * movement.z) +
+        //   (right * movement.x)
+        // ));
+        actor.apply_force(
+          ctl.speed * (
+            (forward * movement.z) +
+            (right * movement.x)
+          ) +
+          Vec3::Y * movement.y * 1250. * (actor_on_ground as u8 as f32)
+        );
+
+        // actor.decel =
+        //   (right * (1. - inputs.movement.x.abs()) * 10.) +
+        //   (forward * (1. - inputs.movement.y.abs()) * 10.);
 
         // translation += forward * movement.z * ctl.speed * dt.0.as_secs_f32();
         // translation += right * movement.x * ctl.speed * dt.0.as_secs_f32();