support for low lod models definitions and pipe

assets/Data/entity/creatures/human.json

@@ -588,7 +588,8 @@
                             "priorityCategory" : "IDLE"
                         }
                     },
-                    "path" : "Models/creatures/person2/person2_1.glb"
+                    "path" : "Models/creatures/person2/person2_1.glb",
+                    "lodPath": "Models/creatures/person2/person2_1_lod.glb"
                 }
             },
             "viewModelData" : {

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

@@ -68,6 +68,7 @@ public class PhysicsEntityUtils {
         if(physicsTemplate.getKinematic()){
             categoryBit = Collidable.TYPE_STATIC_BIT;
         }
+        CollisionEngine.lockOde();
         if(physicsTemplate.getKinematic()){
             DGeom geom = null;
             switch(physicsTemplate.getType()){
@@ -364,6 +365,7 @@ public class PhysicsEntityUtils {
                 ClientPhysicsSyncTree.attachTree(rVal);
             }
         }
+        CollisionEngine.unlockOde();
     }
 
 
@@ -383,6 +385,7 @@ public class PhysicsEntityUtils {
         if(physicsTemplate.getKinematic()){
             categoryBit = Collidable.TYPE_STATIC_BIT;
         }
+        CollisionEngine.lockOde();
         if(physicsTemplate.getKinematic()){
             DGeom geom = null;
             switch(physicsTemplate.getType()){
@@ -686,6 +689,7 @@ public class PhysicsEntityUtils {
                 ServerPhysicsSyncTree.attachTree(rVal);
             }
         }
+        CollisionEngine.unlockOde();
     }
 
 

src/main/java/electrosphere/data/entity/graphics/NonproceduralModel.java

@@ -31,6 +31,11 @@ public class NonproceduralModel {
      */
     private Map<String,Vector3f> meshColorMap;
 
+    /**
+     * The path to the lower-resolution model
+     */
+    private String lodPath;
+
     /**
      * Gets the path of the model
      * @return The path of the model
@@ -94,6 +99,22 @@ public class NonproceduralModel {
     public void setMeshColorMap(Map<String,Vector3f> meshColorMap) {
         this.meshColorMap = meshColorMap;
     }
+
+    /**
+     * Gets the path to the lower resolution model
+     * @return The path to the lower resolution model
+     */
+    public String getLODPath(){
+        return lodPath;
+    }
+
+    /**
+     * Sets the path to the lower resolution model
+     * @param lodPath The path to the lower resolution model
+     */
+    public void setLODPath(String lodPath){
+        this.lodPath = lodPath;
+    }
     
 
 }

src/main/java/electrosphere/entity/DrawableUtils.java

@@ -1,5 +1,14 @@
 package electrosphere.entity;
 
+import java.util.Map;
+import java.util.Map.Entry;
+import java.util.Set;
+
+import org.joml.Vector3f;
+
+import electrosphere.data.entity.graphics.NonproceduralModel;
+import electrosphere.engine.Globals;
+import electrosphere.entity.state.idle.ClientIdleTree;
 import electrosphere.renderer.actor.Actor;
 
 /**
@@ -36,4 +45,55 @@ public class DrawableUtils {
         return entity.containsKey(EntityDataStrings.HAS_UNIQUE_MODEL);
     }
 
+    /**
+     * Applies non-procedural model data to the entity
+     * @param entity The entity
+     * @param modelData The model data
+     */
+    public static void applyNonproceduralModel(Entity entity, NonproceduralModel modelData){
+        if(modelData == null){
+            throw new Error("Null model data!");
+        }
+        if(modelData.getPath() == null){
+            throw new Error("Path undefined!");
+        }
+        //make the entity drawable
+        EntityCreationUtils.makeEntityDrawable(entity, modelData.getPath());
+        Actor creatureActor = EntityUtils.getActor(entity);
+
+        //add low-res model path to actor if present
+        if(modelData.getLODPath() != null){
+            creatureActor.setLowResPath(modelData.getLODPath());
+            Globals.assetManager.addModelPathToQueue(modelData.getLODPath());
+        }
+
+
+        //idle tree & generic stuff all entities have
+        if(modelData.getIdleData() != null){
+            ClientIdleTree.attachTree(entity, modelData.getIdleData());
+        }
+
+        //apply uniforms
+        if(modelData.getUniforms() != null){
+            Map<String,Map<String,Object>> meshUniformMap = modelData.getUniforms();
+            Set<String> meshNames = meshUniformMap.keySet();
+            for(String meshName : meshNames){
+                Map<String,Object> uniforms = meshUniformMap.get(meshName);
+                Set<String> uniformNames = uniforms.keySet();
+                for(String uniformName : uniformNames){
+                    Object value = uniforms.get(uniformName);
+                    creatureActor.setUniformOnMesh(meshName, uniformName, value);
+                }
+            }
+        }
+
+        //apply mesh color map
+        if(modelData.getMeshColorMap() != null){
+            Map<String,Vector3f> meshColorMap = modelData.getMeshColorMap();
+            for(Entry<String,Vector3f> entry : meshColorMap.entrySet()){
+                creatureActor.setUniformOnMesh(entry.getKey(), "color", entry.getValue());
+            }
+        }
+    }
+
 }

src/main/java/electrosphere/entity/types/common/CommonEntityUtils.java

@@ -1,12 +1,7 @@
 package electrosphere.entity.types.common;
 
-import java.util.Map;
-import java.util.Map.Entry;
-import java.util.Set;
-
 import org.joml.Quaterniond;
 import org.joml.Vector3d;
-import org.joml.Vector3f;
 import org.ode4j.ode.DBody;
 
 import electrosphere.client.interact.ClientInteractionEngine;
@@ -31,6 +26,7 @@ import electrosphere.data.entity.graphics.GraphicsTemplate;
 import electrosphere.data.entity.item.Item;
 import electrosphere.engine.Globals;
 import electrosphere.engine.assetmanager.PhysicsMeshQueueItem;
+import electrosphere.entity.DrawableUtils;
 import electrosphere.entity.Entity;
 import electrosphere.entity.EntityCreationUtils;
 import electrosphere.entity.EntityDataStrings;
@@ -55,7 +51,6 @@ import electrosphere.entity.state.gravity.ServerGravityTree;
 import electrosphere.entity.state.growth.ClientGrowthComponent;
 import electrosphere.entity.state.growth.ServerGrowthComponent;
 import electrosphere.entity.state.hitbox.HitboxCollectionState;
-import electrosphere.entity.state.idle.ClientIdleTree;
 import electrosphere.entity.state.idle.ServerIdleTree;
 import electrosphere.entity.state.inventory.ClientInventoryState;
 import electrosphere.entity.state.inventory.InventoryUtils;
@@ -169,32 +164,8 @@ public class CommonEntityUtils {
         //
         if(rawType.getGraphicsTemplate() != null){
             GraphicsTemplate graphicsTemplate = rawType.getGraphicsTemplate();
-            if(graphicsTemplate.getModel() != null && graphicsTemplate.getModel().getPath() != null && EntityUtils.getActor(entity) == null && generateDrawable == true){
-                EntityCreationUtils.makeEntityDrawable(entity, graphicsTemplate.getModel().getPath());
-            }
-            //idle tree & generic stuff all entities have
-            if(graphicsTemplate.getModel() != null && graphicsTemplate.getModel().getIdleData() != null){
-                ClientIdleTree.attachTree(entity, graphicsTemplate.getModel().getIdleData());
-            }
-            if(graphicsTemplate.getModel() != null && graphicsTemplate.getModel().getUniforms() != null){
-                Actor creatureActor = EntityUtils.getActor(entity);
-                Map<String,Map<String,Object>> meshUniformMap = graphicsTemplate.getModel().getUniforms();
-                Set<String> meshNames = meshUniformMap.keySet();
-                for(String meshName : meshNames){
-                    Map<String,Object> uniforms = meshUniformMap.get(meshName);
-                    Set<String> uniformNames = uniforms.keySet();
-                    for(String uniformName : uniformNames){
-                        Object value = uniforms.get(uniformName);
-                        creatureActor.setUniformOnMesh(meshName, uniformName, value);
-                    }
-                }
-            }
-            if(graphicsTemplate.getModel() != null && graphicsTemplate.getModel().getMeshColorMap() != null){
-                Actor creatureActor = EntityUtils.getActor(entity);
-                Map<String,Vector3f> meshColorMap = graphicsTemplate.getModel().getMeshColorMap();
-                for(Entry<String,Vector3f> entry : meshColorMap.entrySet()){
-                    creatureActor.setUniformOnMesh(entry.getKey(), "color", entry.getValue());
-                }
+            if(graphicsTemplate.getModel() != null && EntityUtils.getActor(entity) == null && generateDrawable == true){
+                DrawableUtils.applyNonproceduralModel(entity, graphicsTemplate.getModel());
             }
         }
         Actor creatureActor = EntityUtils.getActor(entity);

src/main/java/electrosphere/renderer/actor/Actor.java

@@ -44,11 +44,32 @@ public class Actor {
      */
     public static final int INVALID_ANIMATION = -1;
 
+    /**
+     * full-resolution lod level
+     */
+    public static final int LOD_LEVEL_FULL = 1;
+
+    /**
+     * lower-resolution lod level
+     */
+    public static final int LOD_LEVEL_LOWER = 0;
+
+
     /**
      * the model path of the model backing the actor
      */
     private String modelPath;
 
+    /**
+     * Path to the low res model
+     */
+    private String lowResPath;
+
+    /**
+     * The LOD level of the actor
+     */
+    private int lodLevel = Actor.LOD_LEVEL_FULL;
+
     /**
      * used for statically binding textures in pipelines that dont bind textures on a per-mesh level
      * ie when in the ui, this can be set to bind a texture at the actor level
@@ -124,6 +145,16 @@ public class Actor {
      * Sets scaling applied at the actor level
      */
     private float scale = 1.0f;
+
+    /**
+     * The transform matrix
+     */
+    private Matrix4d modelMatrix = new Matrix4d();
+
+    /**
+     * The world position vector
+     */
+    private Vector3d worldPos = new Vector3d();
     
     /**
      * Creates an achor
@@ -438,7 +469,7 @@ public class Actor {
      * Calculates the node transforms for the actor
      * @param model The model that backs the actor
      */
-    void calculateNodeTransforms(Model model){
+    private void calculateNodeTransforms(Model model){
         model.updateNodeTransform(boneRotators,staticMorph);
         for(Bone bone : model.getBones()){
             //store position
@@ -478,8 +509,8 @@ public class Actor {
     public void applySpatialData(Matrix4d modelMatrix, Vector3d worldPos){
         Model model = Globals.assetManager.fetchModel(modelPath);
         if(model != null){
-            model.setModelMatrix(modelMatrix);
-            model.setWorldPos(worldPos);
+            this.modelMatrix.set(modelMatrix);
+            this.worldPos.set(worldPos);
         }
     }
     
@@ -489,14 +520,29 @@ public class Actor {
      */
     public void draw(RenderPipelineState renderPipelineState, OpenGLState openGLState){
         Globals.profiler.beginAggregateCpuSample("Actor.draw");
-        Model model = Globals.assetManager.fetchModel(modelPath);
-        if(model != null && Actor.isWithinFrustumBox(renderPipelineState,model,frustumCull)){
+
+        //fetch the model
+        String pathToFetch = this.modelPath;
+        if(this.lodLevel == Actor.LOD_LEVEL_LOWER && this.lowResPath != null){
+            pathToFetch = this.lowResPath;
+        }
+        Model model = Globals.assetManager.fetchModel(pathToFetch);
+
+        if(model == null){
+            Globals.profiler.endCpuSample();
+            return;
+        }
+        model.setModelMatrix(this.modelMatrix);
+        model.setWorldPos(this.worldPos);
+
+        //frustum cull then draw
+        if(Actor.isWithinFrustumBox(renderPipelineState,model,frustumCull)){
             this.applyAnimationMasks(model);
             meshMask.processMeshMaskQueue();
             model.setMeshMask(meshMask);
             model.setTextureMask(textureMap);
             for(ActorShaderMask shaderMask : shaderMasks){
-                if(shaderMask.getModelName().equals(modelPath)){
+                if(shaderMask.getModelName().equals(pathToFetch)){
                     model.getShaderMask().put(shaderMask.getMeshName(),shaderMask);
                 }
             }
@@ -534,13 +580,18 @@ public class Actor {
      */
     public boolean isStaticDrawCall(){
         return 
-        this.animationQueue.size() == 0 &&
-        this.meshMask.getBlockedMeshes().size() == 0 &&
-        this.textureMap == null &&
-        this.shaderMasks.size() == 0 &&
-        this.textureOverride == null &&
-        this.uniformMap.isEmpty() &&
-        this.staticMorph == null
+        //is low lod level
+        this.lodLevel == Actor.LOD_LEVEL_LOWER ||
+        //actor doesn't have anything complicated render-wise (animations, custom textures, etc)
+        (
+            this.animationQueue.size() == 0 &&
+            this.meshMask.getBlockedMeshes().size() == 0 &&
+            this.textureMap == null &&
+            this.shaderMasks.size() == 0 &&
+            this.textureOverride == null &&
+            this.uniformMap.isEmpty() &&
+            this.staticMorph == null
+        )
         ;
     }
 
@@ -873,4 +924,37 @@ public class Actor {
         this.scale = scale;
     }
 
+    /**
+     * Gets the path to the low res model
+     * @return Path to the low res model
+     */
+    public String getLowResPath() {
+        return lowResPath;
+    }
+
+    /**
+     * Sets the path to the low res model
+     * @param lowResPath The path to the low res model
+     */
+    public void setLowResPath(String lowResPath) {
+        this.lowResPath = lowResPath;
+    }
+    
+    /**
+     * Gets the lod level
+     * @return The lod level
+     */
+    public int getLodLevel(){
+        return this.lodLevel;
+    }
+
+    /**
+     * Sets the lod level of the actor
+     * @param lodLevel The lod level
+     */
+    public void setLodLevel(int lodLevel){
+        this.lodLevel = lodLevel;
+    }
+
+
 }

src/main/java/electrosphere/renderer/target/DrawTargetEvaluator.java

@@ -19,6 +19,12 @@ import electrosphere.renderer.pipelines.MainContentPipeline;
  * Evaluates the draw targets
  */
 public class DrawTargetEvaluator {
+
+
+    /**
+     * Cutoff after which we start using LOD models
+     */
+    public static final int LOD_CUTOFF = 100;
     
     /**
      * Evaluates the draw targets
@@ -54,6 +60,19 @@ public class DrawTargetEvaluator {
             Vector3d position = EntityUtils.getPosition(currentEntity);
             //fetch actor
             Actor currentActor = EntityUtils.getActor(currentEntity);
+
+            //evaluate LOD level
+            if(currentActor.getLowResPath() != null){
+                posVec.set(position);
+                double dist = posVec.distance(cameraCenter);
+                if(dist < LOD_CUTOFF){
+                    currentActor.setLodLevel(Actor.LOD_LEVEL_FULL);
+                } else {
+                    currentActor.setLodLevel(Actor.LOD_LEVEL_LOWER);
+                }
+            }
+
+            //queue calls accordingly
             if(!DrawableUtils.hasUniqueModel(currentEntity) && currentActor.isStaticDrawCall()){
                 //calculate camera-modified vector3d
                 Vector3d cameraModifiedPosition = positionVec.set(position).sub(cameraCenter);