AddPhysics on planet allows it to be deorbited #194

NewHorizons/Builder/General/RigidBodyBuilder.cs

@@ -1,15 +1,17 @@
+using NewHorizons.External;
+using NewHorizons.External.Configs;
 using NewHorizons.Utility;
+using NewHorizons.Utility.OWML;
 using UnityEngine;
 namespace NewHorizons.Builder.General
 {
     public static class RigidBodyBuilder
     {
-        public static OWRigidbody Make(GameObject body, float sphereOfInfluence)
+        public static OWRigidbody Make(GameObject body, float sphereOfInfluence, PlanetConfig config)
         {
             body.AddComponent<ProxyShadowCasterSuperGroup>()._bounds.radius = sphereOfInfluence;
 
             Rigidbody rigidBody = body.AddComponent<Rigidbody>();
-            rigidBody.mass = 10000;
             rigidBody.drag = 0f;
             rigidBody.angularDrag = 0f;
             rigidBody.useGravity = false;
@@ -17,18 +19,56 @@ namespace NewHorizons.Builder.General
             rigidBody.interpolation = RigidbodyInterpolation.None;
             rigidBody.collisionDetectionMode = CollisionDetectionMode.Discrete;
 
-            KinematicRigidbody kinematicRigidBody = body.AddComponent<KinematicRigidbody>();
-
             OWRigidbody owRigidBody = body.AddComponent<OWRigidbody>();
-            owRigidBody._kinematicSimulation = true;
             owRigidBody._autoGenerateCenterOfMass = true;
             owRigidBody.SetIsTargetable(true);
             owRigidBody._maintainOriginalCenterOfMass = true;
             owRigidBody._rigidbody = rigidBody;
-            owRigidBody._kinematicRigidbody = kinematicRigidBody;
             owRigidBody._origParent = SearchUtilities.Find("SolarSystemRoot")?.transform;
-            owRigidBody.EnableKinematicSimulation();
+
+            KinematicRigidbody kinematicRigidBody = body.AddComponent<KinematicRigidbody>();
+            owRigidBody._kinematicRigidbody = kinematicRigidBody;
+            owRigidBody._kinematicSimulation = true;
             owRigidBody.MakeKinematic();
+            owRigidBody.EnableKinematicSimulation();
+            rigidBody.mass = 10000;
+
+            if (config.Base.addPhysics)
+            {
+                // hack: make all mesh colliders convex
+                // triggers are already convex
+                // prints errors for non readable meshes but whatever
+                foreach (var meshCollider in body.GetComponentsInChildren<MeshCollider>(true))
+                    meshCollider.convex = true;
+
+                var shape = body.AddComponent<SphereShape>();
+                shape._collisionMode = Shape.CollisionMode.Detector;
+                shape._layerMask = (int)(Shape.Layer.Default | Shape.Layer.Gravity);
+                shape._radius = config.Base.surfaceSize;
+
+                var impactSensor = body.AddComponent<ImpactSensor>();
+                var audioSource = body.AddComponent<AudioSource>();
+                audioSource.maxDistance = 30;
+                audioSource.dopplerLevel = 0;
+                audioSource.rolloffMode = AudioRolloffMode.Custom;
+                audioSource.playOnAwake = false;
+                audioSource.spatialBlend = 1;
+
+                var owAudioSource = body.AddComponent<OWAudioSource>();
+                owAudioSource._audioSource = audioSource;
+                owAudioSource._track = OWAudioMixer.TrackName.Environment;
+
+                var objectImpactAudio = body.AddComponent<ObjectImpactAudio>();
+                objectImpactAudio._minPitch = 0.4f;
+                objectImpactAudio._maxPitch = 0.6f;
+                objectImpactAudio._impactSensor = impactSensor;
+                
+                owRigidBody.MakeNonKinematic();
+                owRigidBody.DisableKinematicSimulation();
+
+                // Should make this number changeable
+                Delay.FireOnNextUpdate(() => owRigidBody.SetMass(0.001f));
+            }
 
             return owRigidBody;
         }

NewHorizons/Builder/Orbital/OrbitlineBuilder.cs

@@ -17,7 +17,7 @@ namespace NewHorizons.Builder.Orbital
 
             if (_dottedLineMaterial == null || _lineMaterial == null) return null;
 
-            GameObject orbitGO = new GameObject("Orbit");
+            var orbitGO = new GameObject("Orbit");
             orbitGO.transform.parent = planetGO.transform;
             orbitGO.transform.localPosition = Vector3.zero;
 
@@ -83,6 +83,16 @@ namespace NewHorizons.Builder.Orbital
 
             Delay.FireOnNextUpdate(orbitLine.InitializeLineRenderer);
 
+            // If the planet has physics and a regular orbit line, make sure that when it's bumped into the old orbit line vanishes
+            if (config.Base.addPhysics && !config.Orbit.trackingOrbitLine)
+            {
+                var impactSensor = planetGO.GetComponent<ImpactSensor>();
+                impactSensor.OnImpact += (ImpactData _) =>
+                {
+                    orbitGO.SetActive(false);
+                };
+            }
+
             return orbitLine;
         }
     }

NewHorizons/External/Modules/BaseModule.cs

@@ -71,6 +71,14 @@ namespace NewHorizons.External.Modules
         /// </summary>
         [DefaultValue(0)] public int gravityVolumePriority = 0;
 
+        /// <summary>
+        /// Apply physics to this planet when you bump into it. Will have a spherical collider the size of surfaceSize. 
+        /// For custom colliders they have to all be convex and you can leave surface size as 0.
+        /// This is meant for stuff like satellites which are relatively simple and can be de-orbited.
+        /// If you are using an orbit line but a tracking line, it will be removed when the planet is bumped in to.
+        /// </summary>
+        public bool addPhysics;
+
         #region Obsolete
 
         [Obsolete("IsSatellite is deprecated, please use ShowMinimap instead")]

NewHorizons/Handlers/PlanetCreationHandler.cs

@@ -348,7 +348,7 @@ namespace NewHorizons.Handlers
 
             const float sphereOfInfluence = 2000f;
             
-            var owRigidBody = RigidBodyBuilder.Make(go, sphereOfInfluence);
+            var owRigidBody = RigidBodyBuilder.Make(go, sphereOfInfluence, body.Config);
             var ao = AstroObjectBuilder.Make(go, null, body.Config, false);
 
             var sector = SectorBuilder.Make(go, owRigidBody, sphereOfInfluence);
@@ -423,7 +423,7 @@ namespace NewHorizons.Handlers
 
             var sphereOfInfluence = GetSphereOfInfluence(body);
             
-            var owRigidBody = RigidBodyBuilder.Make(go, sphereOfInfluence);
+            var owRigidBody = RigidBodyBuilder.Make(go, sphereOfInfluence, body.Config);
             var ao = AstroObjectBuilder.Make(go, primaryBody, body.Config, false);
 
             var sector = SectorBuilder.Make(go, owRigidBody, sphereOfInfluence * 2f);