gd: weapon plants itself on landing

systems/weapon/WeaponSystem.cs

@@ -54,6 +54,7 @@ public partial class WeaponSystem : RigidBody3D
 
     public void PlantWeaponInWall()
     {
+        Freeze = true;
         GlobalPosition = _plantLocation;
         LookAt(GlobalTransform.Origin + _plantNormal, Vector3.Up, true);
     }
@@ -63,4 +64,19 @@ public partial class WeaponSystem : RigidBody3D
         Transform = _startTransform;
         Freeze = true;
     }
+
+    public override void _IntegrateForces(PhysicsDirectBodyState3D state)
+    {
+        base._IntegrateForces(state);
+        if (!Freeze && state.GetContactCount() > 0)
+        {
+            _plantLocation = state.GetContactLocalPosition(0);
+            _plantNormal = state.GetContactLocalNormal(0);
+        }
+    }
+
+    public void OnThrownWeaponReachesGround(Node other)
+    {
+        PlantWeaponInWall();
+    }
 }

systems/weapon/weapon.tscn

@@ -13,6 +13,10 @@ bottom_radius = 0.05
 height = 1.0
 
 [node name="Weapon" type="RigidBody3D"]
+collision_mask = 2
+continuous_cd = true
+contact_monitor = true
+max_contacts_reported = 1
 script = ExtResource("1_csqwk")
 
 [node name="TweenQueueSystem" parent="." instance=ExtResource("2_x1nha")]
@@ -24,3 +28,5 @@ shape = SubResource("CylinderShape3D_avini")
 [node name="MeshInstance3D" type="MeshInstance3D" parent="."]
 transform = Transform3D(1, 0, 0, 0, -4.37114e-08, 1, 0, -1, -4.37114e-08, 0, 0, 0)
 mesh = SubResource("CylinderMesh_x1nha")
+
+[connection signal="body_entered" from="." to="." method="OnThrownWeaponReachesGround"]