kinematic geom colliders on client

docs/src/progress/renderertodo.md

@@ -1926,6 +1926,8 @@ Place buildings along roads
 Fix town placement structure-road intersection test
 
 
+(05/21/2025)
+Kinematic collision templates now use geoms instead of setting kinematic (on client)
 
 
 

src/main/java/electrosphere/client/sim/ClientSimulation.java

@@ -112,8 +112,10 @@ public class ClientSimulation {
         //sum collidable impulses
         Globals.profiler.beginCpuSample("collidable logic");
         for(Entity collidable : Globals.clientState.clientSceneWrapper.getScene().getEntitiesWithTag(EntityTags.COLLIDABLE)){
+            if(ClientCollidableTree.hasClientCollidableTree(collidable)){
                 ClientCollidableTree.getClientCollidableTree(collidable).simulate((float)Globals.engineState.timekeeper.getSimFrameTime());
             }
+        }
         //
         //clear collidable impulse lists
         Globals.clientState.clientSceneWrapper.getCollisionEngine().clearCollidableImpulseLists();

src/main/java/electrosphere/collision/CollisionBodyCreation.java

@@ -133,6 +133,29 @@ public class CollisionBodyCreation {
         return collisionEngine.createCapsuleGeom(radius, length, categoryBits);
     }
 
+    /**
+     * Creates a capsule shape
+     * @param collisionEngine The collision engine
+     * @param radius the radius of the capsule
+     * @param length the length of the capsule
+     * @param categoryBits the category bits for the shape
+     * @return the capsule shape
+     */
+    public static DCapsule createCylinderShape(CollisionEngine collisionEngine, double radius, double length, long categoryBits){
+        return collisionEngine.createCapsuleGeom(radius, length, categoryBits);
+    }
+
+    /**
+     * Creates the cube shape
+     * @param collisionEngine The collision engine
+     * @param dimensions The dimensions of the cube
+     * @param categoryBits The category bits
+     * @return The cube shape
+     */
+    public static DBox createCubeShape(CollisionEngine collisionEngine, Vector3d dimensions, long categoryBits){
+        return collisionEngine.createCubeGeom(dimensions, categoryBits);
+    }
+
     /**
      * Sets the mass on the dbody
      * @param collisionEngine The collision engine

src/main/java/electrosphere/collision/CollisionEngine.java

@@ -548,14 +548,25 @@ public class CollisionEngine {
                 if(collidable.getParentTracksCollidable()){
                     Entity physicsEntity = collidable.getParent();
                     DBody rigidBody = PhysicsEntityUtils.getDBody(physicsEntity);
+                    DGeom geom = PhysicsEntityUtils.getDGeom(physicsEntity);
                     Matrix4d inverseTransform = new Matrix4d();
-                    Vector4d rawPos = inverseTransform.transform(new Vector4d(PhysicsUtils.odeVecToJomlVec(rigidBody.getPosition()).add(this.floatingOrigin),1));
+                    Vector4d rawPos = null;
+                    if(rigidBody != null){
+                        rawPos = inverseTransform.transform(new Vector4d(PhysicsUtils.odeVecToJomlVec(rigidBody.getPosition()).add(this.floatingOrigin),1));
+                    } else if(geom != null){
+                        rawPos = inverseTransform.transform(new Vector4d(PhysicsUtils.odeVecToJomlVec(geom.getPosition()).add(this.floatingOrigin),1));
+                    }
                     Vector3d calculatedPosition = new Vector3d(rawPos.x,rawPos.y,rawPos.z);
                     Vector3d suggestedPosition = this.suggestMovementPosition(collisionWorldData, calculatedPosition);
                     if(calculatedPosition.distance(suggestedPosition) > 0){
                         collidable.addImpulse(new Impulse(new Vector3d(), new Vector3d(), new Vector3d(), 0, Collidable.TYPE_WORLD_BOUND));
                     }
-                    Quaterniond newRotation = PhysicsUtils.getRigidBodyRotation(rigidBody);
+                    Quaterniond newRotation = null;
+                    if(rigidBody != null){
+                        newRotation = PhysicsUtils.getRigidBodyRotation(rigidBody);
+                    } else {
+                        newRotation = PhysicsUtils.getGeomRotation(geom);
+                    }
                     EntityUtils.getPosition(physicsEntity).set(suggestedPosition);
                     EntityUtils.getRotation(physicsEntity).set(newRotation);
                 }
@@ -1076,13 +1087,26 @@ public class CollisionEngine {
      * @param position The position
      * @param rotation The rotation
      */
-    protected void setGeomTransform(DGeom geom, Vector3d position, Quaterniond rotation){
+    protected void setGeomOffsetTransform(DGeom geom, Vector3d position, Quaterniond rotation){
         spaceLock.lock();
         geom.setOffsetPosition(position.x, position.y, position.z);
         geom.setOffsetQuaternion(PhysicsUtils.jomlQuatToOdeQuat(rotation));
         spaceLock.unlock();
     }
 
+    /**
+     * Sets the transform of a geometry (local to the parent)
+     * @param geom The geometry
+     * @param position The position
+     * @param rotation The rotation
+     */
+    protected void setGeomTransform(DGeom geom, Vector3d position, Quaterniond rotation){
+        spaceLock.lock();
+        geom.setPosition(position.x, position.y, position.z);
+        geom.setQuaternion(PhysicsUtils.jomlQuatToOdeQuat(rotation));
+        spaceLock.unlock();
+    }
+
     /**
      * Corrects the initial axis of eg cylinders or capsules
      * @param geom the geometry to correct

src/main/java/electrosphere/collision/PhysicsEntityUtils.java

@@ -59,8 +59,10 @@ public class PhysicsEntityUtils {
      */
     public static void clientAttachCollidableTemplate(Entity rVal, CollidableTemplate physicsTemplate){
         DBody rigidBody = null;
+        DGeom geom = null;
         Collidable collidable;
         double mass = 1.0f;
+        CollisionEngine engine = Globals.clientState.clientSceneWrapper.getCollisionEngine();
         if(physicsTemplate.getMass() != null){
             mass = physicsTemplate.getMass();
         }
@@ -68,6 +70,97 @@ public class PhysicsEntityUtils {
         if(physicsTemplate.getKinematic()){
             categoryBit = Collidable.TYPE_STATIC_BIT;
         }
+        if(physicsTemplate.getKinematic()){
+            switch(physicsTemplate.getType()){
+                case CollidableTemplate.COLLIDABLE_TYPE_CYLINDER: {
+
+                    //
+                    //create dbody
+                    geom = CollisionBodyCreation.createCylinderShape(
+                        engine, 
+                        physicsTemplate.getDimension1(),
+                        physicsTemplate.getDimension2(),
+                        categoryBit
+                    );
+
+                    //
+                    //create collidable and link to structures
+                    collidable = new Collidable(rVal, Collidable.TYPE_CREATURE, true);
+                    PhysicsEntityUtils.setDGeom(rVal, geom);
+
+                    //
+                    //store values
+                    Matrix4d offsetTransform = new Matrix4d().translationRotate(
+                        physicsTemplate.getOffsetX(), physicsTemplate.getOffsetY(), physicsTemplate.getOffsetZ(), //translate
+                        physicsTemplate.getRotX(), physicsTemplate.getRotY(), physicsTemplate.getRotZ(), physicsTemplate.getRotW() //rotate
+                    );
+                    rVal.putData(EntityDataStrings.PHYSICS_COLLISION_BODY_TRANSFORM, offsetTransform);
+                    rVal.putData(EntityDataStrings.PHYSICS_MODEL_TEMPLATE, physicsTemplate);
+
+                    Globals.clientState.clientSceneWrapper.getCollisionEngine().registerCollisionObject(rigidBody, collidable);
+                    Globals.clientState.clientScene.registerEntityToTag(rVal, EntityTags.COLLIDABLE);
+                } break;
+                case CollidableTemplate.COLLIDABLE_TYPE_CUBE: {
+                    //
+                    //create dbody
+                    geom = CollisionBodyCreation.createCubeShape(
+                        Globals.clientState.clientSceneWrapper.getCollisionEngine(),
+                        new Vector3d(physicsTemplate.getDimension1(),physicsTemplate.getDimension2(),physicsTemplate.getDimension3()),
+                        categoryBit
+                    );
+
+                    //
+                    //create collidable and link to structures
+                    collidable = new Collidable(rVal, Collidable.TYPE_CREATURE, true);
+                    PhysicsEntityUtils.setDGeom(rVal,geom);
+
+                    //
+                    //store values
+                    Matrix4d offsetTransform = new Matrix4d().translationRotateScale(
+                        physicsTemplate.getOffsetX(), physicsTemplate.getOffsetY(), physicsTemplate.getOffsetZ(), //translate
+                        physicsTemplate.getRotX(), physicsTemplate.getRotY(), physicsTemplate.getRotZ(), physicsTemplate.getRotW(), //rotate
+                        1, 1, 1 //scale
+                    );
+                    rVal.putData(EntityDataStrings.PHYSICS_COLLISION_BODY_TRANSFORM, offsetTransform);
+                    rVal.putData(EntityDataStrings.PHYSICS_MODEL_TEMPLATE, physicsTemplate);
+                    rVal.putData(EntityDataStrings.PHYSICS_COLLIDABLE, collidable);
+
+                    Globals.clientState.clientSceneWrapper.getCollisionEngine().registerCollisionObject(rigidBody, collidable);
+                    Globals.clientState.clientScene.registerEntityToTag(rVal, EntityTags.COLLIDABLE);
+                } break;
+                case CollidableTemplate.COLLIDABLE_TYPE_CAPSULE: {
+                    //
+                    //create dbody
+                    geom = CollisionBodyCreation.createCapsuleShape(
+                        Globals.clientState.clientSceneWrapper.getCollisionEngine(),
+                        physicsTemplate.getDimension1(),
+                        physicsTemplate.getDimension2(),
+                        categoryBit
+                    );
+
+                    //
+                    //create collidable and link to structures
+                    collidable = new Collidable(rVal, Collidable.TYPE_CREATURE, true);
+                    PhysicsEntityUtils.setDGeom(rVal,geom);
+
+                    //
+                    //store values
+                    Matrix4d offsetTransform = new Matrix4d().translationRotateScale(
+                        physicsTemplate.getOffsetX(), physicsTemplate.getOffsetY(), physicsTemplate.getOffsetZ(), //translate
+                        physicsTemplate.getRotX(), physicsTemplate.getRotY(), physicsTemplate.getRotZ(), physicsTemplate.getRotW(), //rotate
+                        1, 1, 1 //scale
+                    );
+                    rVal.putData(EntityDataStrings.PHYSICS_COLLISION_BODY_TRANSFORM, offsetTransform);
+                    rVal.putData(EntityDataStrings.PHYSICS_MODEL_TEMPLATE, physicsTemplate);
+                    rVal.putData(EntityDataStrings.PHYSICS_COLLIDABLE, collidable);
+
+                    rVal.putData(EntityDataStrings.PHYSICS_MASS, mass);
+
+                    Globals.clientState.clientSceneWrapper.getCollisionEngine().registerCollisionObject(rigidBody, collidable);
+                    Globals.clientState.clientScene.registerEntityToTag(rVal, EntityTags.COLLIDABLE);
+                } break;
+            }
+        } else {
             switch(physicsTemplate.getType()){
                 case CollidableTemplate.COLLIDABLE_TYPE_CYLINDER: {
 
@@ -266,6 +359,7 @@ public class PhysicsEntityUtils {
                     Globals.clientState.clientScene.registerEntityToTag(rVal, EntityTags.COLLIDABLE);
                 } break;
             }
+        }
         //if we successfully attached the body, add a sync tree
         if(rigidBody != null){
             ClientPhysicsSyncTree.attachTree(rVal);
@@ -635,13 +729,34 @@ public class PhysicsEntityUtils {
         return (DBody)entity.getData(EntityDataStrings.PHYSICS_COLLISION_BODY);
     }
 
+    /**
+     * Sets the static geom on the entity
+     * @param entity The entity
+     * @param geom The static geom
+     */
+    public static void setDGeom(Entity entity, DGeom geom){
+        if(geom == null){
+            throw new Error("Trying to set null geom!");
+        }
+        entity.putData(EntityDataStrings.PHYSICS_GEOM, geom);
+    }
+
+    /**
+     * Gets the geom attached to the entity
+     * @param entity The entity
+     * @return The geom if it exists, null otherwise
+     */
+    public static DGeom getDGeom(Entity entity){
+        return (DGeom)entity.getData(EntityDataStrings.PHYSICS_GEOM);
+    }
+
     /**
      * Sets the position of a DGeom
      * @param collisionEngine the collision engine
      * @param geom the geometry
      */
-    public static void setGeometryPosition(CollisionEngine collisionEngine, DGeom geom, Vector3d position, Quaterniond rotation){
+    public static void setGeometryOffsetPosition(CollisionEngine collisionEngine, DGeom geom, Vector3d position, Quaterniond rotation){
-        collisionEngine.setGeomTransform(geom, position, rotation);
+        collisionEngine.setGeomOffsetTransform(geom, position, rotation);
     }
 
     /**

src/main/java/electrosphere/collision/PhysicsUtils.java

@@ -7,6 +7,7 @@ import org.ode4j.math.DMatrix3;
 import org.ode4j.math.DQuaternion;
 import org.ode4j.math.DQuaternionC;
 import org.ode4j.ode.DBody;
+import org.ode4j.ode.DGeom;
 
 import electrosphere.collision.collidable.Collidable;
 import electrosphere.data.entity.collidable.CollidableTemplate;
@@ -25,6 +26,15 @@ public class PhysicsUtils {
         return odeQuatToJomlQuat(body.getQuaternion());
     }
 
+    /**
+     * Gets the rotation of the geom as a joml quaternion
+     * @param geom The geom
+     * @return The rotation
+     */
+    public static Quaterniond getGeomRotation(DGeom geom){
+        return odeQuatToJomlQuat(geom.getQuaternion());
+    }
+    
     /**
      * Converts an Ode vector to a joml vector
      * @param vector Ode vector
@@ -86,6 +96,17 @@ public class PhysicsUtils {
         collisionEngine.setBodyTransform(body, position, rotation);
     }
 
+    /**
+     * Sets the transform of a geom
+     * @param collisionEngine The engine
+     * @param position The position
+     * @param rotation The rotation
+     * @param geom The geom
+     */
+    public static void setGeomTransform(CollisionEngine collisionEngine, Vector3d position, Quaterniond rotation, DGeom geom){
+        collisionEngine.setGeomTransform(geom, position, rotation);
+    }
+
     /**
      * Synchronizes the data on a body
      * @param body The body

src/main/java/electrosphere/collision/collidable/Collidable.java

@@ -13,21 +13,30 @@ import java.util.List;
  */
 public class Collidable {
     
-    //The entity this collidable is attached to
+    /**
-    Entity parent;
+     * The entity this collidable is attached to
-    //The type of collidable
+     */
-    String type;
+    private Entity parent;
 
-    //If true, once impulses are applied to the collidable, have the parent entity resynchronize its position with the collidable
+    /**
-    boolean parentTracksCollidable = true;
+     * The type of collidable
+     */
+    private String type;
 
-    //The impulses to be applied to this collidable
+    /**
-    List<Impulse> impulses = new LinkedList<Impulse>();
+     * If true, once impulses are applied to the collidable, have the parent entity resynchronize its position with the collidable
+     */
+    private boolean parentTracksCollidable = true;
+    
+    /**
+     * The impulses to be applied to this collidable
+     */
+    private List<Impulse> impulses = new LinkedList<Impulse>();
 
     /**
      * The params for the surface of this collidable when a collision occurs
      */
-    SurfaceParams surfaceParams;
+    private SurfaceParams surfaceParams;
     
     //these should have corresponding category bits along with them
     public static final String TYPE_STATIC = "static";

src/main/java/electrosphere/entity/EntityDataStrings.java

@@ -133,6 +133,7 @@ public class EntityDataStrings {
     Physics Entity
     */
     public static final String PHYSICS_COLLISION_BODY = "physicsRigidBody";
+    public static final String PHYSICS_GEOM = "physicsGeom";
     public static final String PHYSICS_COLLISION_BODY_TRANSFORM = "physicsRigidBodyTransform"; // the transform matrix from origin of entity to origin of physics body
     public static final String PHYSICS_COLLIDABLE = "physicsCollidable";
     public static final String PHYSICS_MODEL_TEMPLATE = "physicsModelTemplate";

src/main/java/electrosphere/entity/state/hitbox/HitboxCollectionState.java

@@ -442,7 +442,7 @@ public class HitboxCollectionState {
      * @param bonePosition The position of the bone
      */
     private void updateStaticCapsulePosition(CollisionEngine collisionEngine, DGeom geom, HitboxState shapeStatus){
-        PhysicsEntityUtils.setGeometryPosition(collisionEngine, geom, new Vector3d(), new Quaterniond(0.707,0,0,0.707));
+        PhysicsEntityUtils.setGeometryOffsetPosition(collisionEngine, geom, new Vector3d(), new Quaterniond(0.707,0,0,0.707));
     }
 
     /**
@@ -474,7 +474,7 @@ public class HitboxCollectionState {
         Vector3d hitboxPos = AttachUtils.calculateBoneAttachmentLocalPosition(offsetPosition, offsetRotation, bonePositionD, boneRotation, parentPosition, parentRotation, parentScale);
 
 
-        PhysicsEntityUtils.setGeometryPosition(collisionEngine, geom, hitboxPos, new Quaterniond());
+        PhysicsEntityUtils.setGeometryOffsetPosition(collisionEngine, geom, hitboxPos, new Quaterniond());
     }
 
     /**
@@ -549,7 +549,7 @@ public class HitboxCollectionState {
             }
             geom = CollisionBodyCreation.createCapsuleShape(manager.getCollisionEngine(), hitboxState.getHitboxData().getRadius(), length, Collidable.TYPE_OBJECT_BIT);
             CollisionBodyCreation.attachGeomToBody(collisionEngine,body,geom);
-            PhysicsEntityUtils.setGeometryPosition(collisionEngine, geom, bodyPosition, worldRotation);
+            PhysicsEntityUtils.setGeometryOffsetPosition(collisionEngine, geom, bodyPosition, worldRotation);
         } else {
             //called first time the hitbox updates position
             this.destroyGeom(collisionEngine, geom);

src/main/java/electrosphere/entity/types/collision/CollisionObjUtils.java

@@ -3,6 +3,7 @@ package electrosphere.entity.types.collision;
 import org.joml.Quaterniond;
 import org.joml.Vector3d;
 import org.ode4j.ode.DBody;
+import org.ode4j.ode.DGeom;
 
 import electrosphere.collision.CollisionEngine;
 import electrosphere.collision.PhysicsEntityUtils;
@@ -92,6 +93,10 @@ public class CollisionObjUtils {
         if(body != null){
             PhysicsUtils.setRigidBodyTransform(Globals.clientState.clientSceneWrapper.getCollisionEngine(), position, rotation, body);
         }
+        DGeom geom = PhysicsEntityUtils.getDGeom(e);
+        if(geom != null){
+            PhysicsUtils.setGeomTransform(Globals.clientState.clientSceneWrapper.getCollisionEngine(), position, rotation, geom);
+        }
     }
     
     public static Collidable getCollidable(Entity e){