Tweaking GroundMotionComponent

components/GroundMotionComponent.cs

@@ -1,28 +1,49 @@
-using Godot;
 using System;
+using System.Numerics;
+using Godot;
+using Vector2 = Godot.Vector2;
+using Vector3 = Godot.Vector3;
 
 /// <summary>
 /// </summary>
 public class GroundMotionComponent
 {
-    public float MaxSpeed = 3;
+    public float Accel = 50;
+    public float Damping = 0.2f;
+    public float MaxSpeed = 2;
 
-    public void Process(float delta, Entity entity, Vector3 target_position)
+    public void PhysicsProcess(float delta, Entity entity, Vector3 target_position)
     {
-        Vector3 direction_xy = new Vector3(target_position.x - entity.GlobalTranslation.x,
-            0,
+        Vector2 plane_target_vector = new Vector2(target_position.x - entity.GlobalTranslation.x,
             target_position.z - entity.GlobalTranslation.z);
+        float distance_error = plane_target_vector.Length();
 
-        Vector3 new_velocity = direction_xy.Normalized() * MaxSpeed;
-        new_velocity.y = entity.Velocity.y - 9.81f * delta;
+        if (distance_error < 0.01)
+        {
+            entity.Velocity = Vector3.Zero;
+        } else {
+            Vector2 plane_velocity = new Vector2(entity.Velocity.x, entity.Velocity.z);
+            plane_velocity = plane_velocity + plane_target_vector / distance_error * Accel * delta;
 
-        if (direction_xy.LengthSquared() > 0.01)
-        {
-            entity.Velocity = entity.MoveAndSlide(new_velocity);            
-        }
-        else
-        {
-            entity.Velocity = Vector3.Up * -9.81f * delta;
+            float projected_step = plane_target_vector.Dot(plane_velocity * delta);
+            GD.Print("Projected step: " + projected_step);
+            if (projected_step > 1)
+            {
+                plane_velocity /= projected_step;
+            }
+
+            float plane_speed = plane_velocity.Length();
+            if (plane_speed > MaxSpeed)
+            {
+                plane_velocity *= MaxSpeed / plane_speed;
+            }
+
+            entity.Velocity = new Vector3(
+                plane_velocity.x, 0, plane_velocity.y);
         }
+
+        entity.Velocity.x -= entity.Velocity.x * Damping;
+        entity.Velocity.z -= entity.Velocity.z * Damping;
+        entity.Velocity = entity.MoveAndSlide(entity.Velocity);
     }
 }

entities/Player.cs

@@ -30,10 +30,10 @@ public class Player : Entity
     }
 
 
-    public override void _Process(float _delta)
+    public override void _PhysicsProcess(float delta)
     {
-        base._Process(_delta);
-        _groundMotion.Process(_delta, this, TargetPosition);
+        base._PhysicsProcess(delta);
+        _groundMotion.PhysicsProcess(delta, this, TargetPosition);
     }
 
     public void OnPositionUpdated(Vector3 newPosition)

scenes/AdaptiveWorldStream.tscn

@@ -21,7 +21,7 @@ albedo_color = Color( 1, 1, 1, 0.156863 )
 extents = Vector3( 20, 1, 20 )
 
 [sub_resource type="CapsuleShape" id=7]
-radius = 0.475
+radius = 0.2
 height = 0.5
 
 [sub_resource type="CapsuleMesh" id=8]