Basic scene loading to server

assets/Data/terrainObjects.json

@@ -0,0 +1,16 @@
+{
+    "terrainObjects" : [
+
+        {
+            "objectId" : "terrain1",
+            "modelPath" : "Models/startingarea1.fbx",
+            "tokens" : [
+            ],
+            "collidable": null
+        }
+
+    ],
+    "files" : [
+        "Data/objects/floatingisland.json"
+    ]
+}

assets/Scenes/testscene1/someScript.js

@@ -0,0 +1 @@
+console.log("Loaded testscene1");

assets/Scenes/testscene1/testscene1.json

@@ -0,0 +1,19 @@
+{
+    "entities": [
+        {
+            "type": "item",
+            "subtype": "Katana",
+            "posX": 3,
+            "posY": 5,
+            "posZ": 5,
+            "rotX": 0,
+            "rotY": 0,
+            "rotZ": 0,
+            "rotW": 1
+        }
+    ],
+    "scriptPaths": [
+        "Scenes/testscene1/someScript.js"
+    ],
+    "initScriptPath": "Scenes/testscene1/someScript.js"
+}

src/main/java/electrosphere/engine/LoadingThread.java

@@ -16,6 +16,7 @@ import electrosphere.controls.ControlHandler;
 import electrosphere.entity.Entity;
 import electrosphere.entity.EntityDataStrings;
 import electrosphere.entity.EntityUtils;
+import electrosphere.entity.scene.SceneLoader;
 import electrosphere.entity.state.movement.ApplyRotationTree;
 import electrosphere.entity.types.camera.CameraEntityUtils;
 import electrosphere.entity.types.creature.CreatureTemplate;
@@ -766,6 +767,9 @@ public class LoadingThread extends Thread {
         myCube.putData(EntityDataStrings.DRAW_TRANSPARENT_PASS, true);
         EntityUtils.getPosition(myCube).set(3,1,3);
 
+        SceneLoader loader = new SceneLoader();
+        loader.serverInstantiateSceneFile("Scenes/testscene1/testscene1.json");
+
         // Globals.entityManager.registerBehaviorTree(new BehaviorTree() {
         //     int i = 0;
         //     public void simulate(){

src/main/java/electrosphere/entity/scene/EntityDescriptor.java

@@ -0,0 +1,67 @@
+package electrosphere.entity.scene;
+
+/**
+ * Descriptor of an entity in a scene
+ */
+public class EntityDescriptor {
+
+    /**
+     * The different types of entities that can be defined in an entity descriptor
+     * Principally used in SceneLoader.java's serverInstantiateSceneFile function
+     */
+    public static final String TYPE_CREATURE = "creature";
+    public static final String TYPE_ITEM = "item";
+    public static final String TYPE_OBJECT = "object";
+    
+    //the type of entity (creature, item, etc)
+    String type;
+    //the subtype (eg human, katana, etc)
+    String subtype;
+    //position of the entity in the scene
+    double posX;
+    double posY;
+    double posZ;
+    //rotation of the entity in the scene
+    double rotX;
+    double rotY;
+    double rotZ;
+    double rotW;
+
+    public String getType(){
+        return type;
+    }
+
+    public String getSubtype(){
+        return subtype;
+    }
+
+    public double getPosX(){
+        return posX;
+    }
+
+    public double getPosY(){
+        return posY;
+    }
+
+    public double getPosZ(){
+        return posZ;
+    }
+
+    public double getRotX(){
+        return rotX;
+    }
+
+    public double getRotY(){
+        return rotY;
+    }
+
+    public double getRotZ(){
+        return rotZ;
+    }
+
+    public double getRotW(){
+        return rotW;
+    }
+    
+
+}

src/main/java/electrosphere/entity/scene/Scene.java

@@ -0,0 +1,5 @@
+package electrosphere.entity.scene;
+
+public class Scene {
+    
+}

src/main/java/electrosphere/entity/scene/SceneFile.java

@@ -0,0 +1,31 @@
+package electrosphere.entity.scene;
+
+import java.util.List;
+
+/**
+ * Model class for scene files
+ */
+public class SceneFile {
+    
+    //the entities in the scene
+    List<EntityDescriptor> entities;
+
+    //the paths relative to the assets folder of each script to be loaded when the scene is loaded
+    List<String> scriptPaths;
+
+    //the initial script to run when the scene is loaded into the engine
+    String initScriptPath;
+
+    public List<String> getScriptPaths(){
+        return scriptPaths;
+    }
+
+    public List<EntityDescriptor> getEntities(){
+        return entities;
+    }
+
+    public String getInitScriptPath(){
+        return initScriptPath;
+    }
+
+}

src/main/java/electrosphere/entity/scene/SceneLoader.java

@@ -0,0 +1,50 @@
+package electrosphere.entity.scene;
+
+import electrosphere.entity.Entity;
+import electrosphere.entity.EntityUtils;
+import electrosphere.entity.types.creature.CreatureUtils;
+import electrosphere.entity.types.item.ItemUtils;
+import electrosphere.main.Globals;
+import electrosphere.util.FileUtils;
+
+/**
+ * Used to load scene files into the engine
+ */
+public class SceneLoader {
+
+    /**
+     * Loads a scene file on the server
+     * @param path The path in the assets directory to a scene file
+     */
+    public void serverInstantiateSceneFile(String path){
+        SceneFile file = FileUtils.loadObjectFromAssetPath(path, SceneFile.class);
+        //spawn initial entities
+        for(EntityDescriptor descriptor : file.getEntities()){
+            //spawn entity somehow
+            switch(descriptor.getType()){
+
+                case EntityDescriptor.TYPE_CREATURE: {
+                    Entity newEntity = CreatureUtils.spawnBasicCreature(descriptor.subtype, null);
+                    EntityUtils.getPosition(newEntity).set(descriptor.posX,descriptor.posY,descriptor.posZ);
+                    EntityUtils.getRotation(newEntity).set((float)descriptor.rotX, (float)descriptor.rotY, (float)descriptor.rotZ, (float)descriptor.rotW);
+                } break;
+
+                case EntityDescriptor.TYPE_ITEM: {
+                    Entity newEntity = ItemUtils.spawnBasicItem(descriptor.subtype);
+                    EntityUtils.getPosition(newEntity).set(descriptor.posX,descriptor.posY,descriptor.posZ);
+                    EntityUtils.getRotation(newEntity).set((float)descriptor.rotX, (float)descriptor.rotY, (float)descriptor.rotZ, (float)descriptor.rotW);
+                } break;
+
+                case EntityDescriptor.TYPE_OBJECT:
+                default:
+                throw new UnsupportedOperationException();
+            }
+        }
+        //load scripts
+        for(String scriptPath : file.getScriptPaths()){
+            Globals.scriptEngine.loadScript(scriptPath);
+        }
+        Globals.scriptEngine.runScript(file.getInitScriptPath());
+    }
+
+}

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

@@ -124,6 +124,16 @@ public class CollisionEngine {
         //https://pybullet.org/Bullet/phpBB3/viewtopic.php?t=11399
         
     }
+
+    public CollisionEngine(InternalTickCallback callback){
+        broadphase = new DbvtBroadphase();
+        collisionConfiguration = new DefaultCollisionConfiguration();
+        dispatcher = new CollisionDispatcher(collisionConfiguration);
+        solver = new SequentialImpulseConstraintSolver();
+        world = new DiscreteDynamicsWorld(dispatcher, broadphase, solver, collisionConfiguration);
+        this.callback = callback;
+        world.setInternalTickCallback(callback, world);
+    }
     
     public static void resolveCollision(Collidable impactor, Collidable receiver, Vector3d normal, Vector3d localPosition, Vector3d worldPos, float magnitude){
         switch(receiver.getType()){

src/main/java/electrosphere/main/Globals.java

@@ -56,6 +56,7 @@ import electrosphere.renderer.ui.ElementManager;
 import electrosphere.renderer.ui.elements.ImagePanel;
 import electrosphere.renderer.ui.font.FontUtils;
 import electrosphere.renderer.ui.font.RawFontMap;
+import electrosphere.script.ScriptEngine;
 import electrosphere.util.FileUtils;
 
 /**
@@ -244,6 +245,8 @@ public class Globals {
     //micro simulation
     public static MicroSimulation microSimulation;
     
+    //script engine
+    public static ScriptEngine scriptEngine;
     
     //manages hitboxes
     public static HitboxManager hitboxManager;
@@ -336,6 +339,9 @@ public class Globals {
         assetManager = new AssetManager();
         //load widget manager
         elementManager = new ElementManager();
+        //script engine
+        scriptEngine = new ScriptEngine();
+        scriptEngine.init();
         //hitbox manager
         hitboxManager = new HitboxManager();
         //ai manager

src/main/java/electrosphere/script/ScriptEngine.java

@@ -9,6 +9,7 @@ import org.graalvm.polyglot.Context;
 import org.graalvm.polyglot.Source;
 import org.graalvm.polyglot.Value;
 
+import electrosphere.logger.LoggerInterface;
 import electrosphere.util.FileUtils;
 
 public class ScriptEngine {
@@ -25,15 +26,15 @@ public class ScriptEngine {
         //read scripts into source map
         readScriptsDirectory("/Scripts", FileUtils.getAssetFile("/Scripts"));
         //create bindings
-        try {
-            String content = FileUtils.getAssetFileAsString("/Scripts/test.js");
-            Source source = Source.create("js", content);
-            context.eval(source);
-            System.out.println("Evaluated");
-        } catch (IOException e) {
-            // TODO Auto-generated catch block
-            e.printStackTrace();
-        }
+        // try {
+        //     String content = FileUtils.getAssetFileAsString("/Scripts/test.js");
+        //     Source source = Source.create("js", content);
+        //     context.eval(source);
+        //     System.out.println("Evaluated");
+        // } catch (IOException e) {
+        //     // TODO Auto-generated catch block
+        //     e.printStackTrace();
+        // }
     }
 
     void createBindings(){
@@ -56,5 +57,24 @@ public class ScriptEngine {
             }
         }
     }
+
+    public void loadScript(String path){
+        String content;
+        try {
+            content = FileUtils.getAssetFileAsString(path);
+            sourceMap.put(path,Source.create("js",content));
+        } catch (IOException e) {
+            // TODO Auto-generated catch block
+            e.printStackTrace();
+            LoggerInterface.loggerGameLogic.ERROR("FAILED TO LOAD SCRIPT", e);
+        }
+    }
+
+    public void runScript(String path){
+        Source source = sourceMap.get(path);
+        if(source != null){
+            context.eval(source);
+        }
+    }
     
 }

src/main/java/electrosphere/util/FileUtils.java

@@ -258,11 +258,13 @@ public class FileUtils {
                 recursivelyDelete(child.getAbsolutePath());
             }
         }
-        try {
-            Files.delete(file.toPath());
-        } catch (IOException e) {
-            // TODO Auto-generated catch block
-            e.printStackTrace();
+        if(file.exists()){
+            try {
+                Files.delete(file.toPath());
+            } catch (IOException e) {
+                // TODO Auto-generated catch block
+                e.printStackTrace();
+            }
         }
     }