package electrosphere.entity.scene;

import electrosphere.engine.Globals;
import electrosphere.entity.Entity;
import electrosphere.entity.EntityUtils;
import electrosphere.entity.types.creature.CreatureUtils;
import electrosphere.entity.types.item.ItemUtils;
import electrosphere.entity.types.object.ObjectUtils;
import electrosphere.server.datacell.ServerDataCell;
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 ServerDataCell serverInstantiateSceneFile(String path){
        ServerDataCell rVal = Globals.dataCellManager.createNewCell();
        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);
                    rVal.initializeEntityForNewPlayers(newEntity, rVal);
                } 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);
                    rVal.initializeEntityForNewPlayers(newEntity, rVal);
                } break;

                case EntityDescriptor.TYPE_OBJECT: {
                    Entity newEntity = ObjectUtils.spawnBasicObject(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);
                    rVal.initializeEntityForNewPlayers(newEntity, rVal);
                } break;
                default:
                throw new UnsupportedOperationException();
            }
        }
        //load scripts
        for(String scriptPath : file.getScriptPaths()){
            Globals.scriptEngine.loadScript(scriptPath);
        }
        Globals.scriptEngine.runScript(file.getInitScriptPath());

        return rVal;
    }

}