LoadingScreen.cs

using UnityEngine;
using UnityEngine.UI;
using System.Collections;
using System.Collections.Generic;

public class LoadingScreen : MonoBehaviour {

    public GameObject LoadingScreenWidget;
    public GameObject TextPatientName;
    //public GameObject TextLoadingProcess;
    private Text mTextPatientName;
    //private Text mTextLoadingProcess;
    private List<string> activeJobs = new List<string>();

    // Use this for initialization
    void Start () {
        // Get the text components to be modified later:
        //mTextLoadingProcess = TextLoadingProcess.GetComponent<Text> ();
        mTextPatientName = TextPatientName.GetComponent<Text> ();

        // Start listening to events which are called during the loading process:
        PatientEventSystem.startListening (PatientEventSystem.Event.PATIENT_StartLoading,
            loadingStarted);
        PatientEventSystem.startListening (PatientEventSystem.Event.LOADING_AddLoadingJob,
            addLoadingJob);
        PatientEventSystem.startListening (PatientEventSystem.Event.LOADING_RemoveLoadingJob,
            removeLoadingJob);
    }

    // Called when a new patient is being loaded:
    void loadingStarted( object obj )
    {
        // The passed object should be the patient entry of the patient to be loaded:
        PatientMeta patientEntry = obj as PatientMeta;
        if (patientEntry != null) {
            mTextPatientName.text = patientEntry.name;
        }

        //mTextLoadingProcess.text = "Started Loading\n";
        LoadingScreenWidget.SetActive (true);
    }

    void addLoadingJob( object obj )
    {
        if (!LoadingScreenWidget.activeSelf)
            return;
            
        string msg = obj as string;
        if (msg != null) {
            activeJobs.Add (msg);
        }
        updateInfo ();
    }
    void removeLoadingJob( object obj )
    {
        if (!LoadingScreenWidget.activeSelf)
            return;
        
        string msg = obj as string;
        if (msg != null) {
            if (activeJobs.Contains (msg)) {
                activeJobs.Remove (msg);
            }
        }
        updateInfo ();

        // If all jobs have finished, close loading screen:
        if (activeJobs.Count <= 0) {
            LoadingScreenWidget.SetActive (false);
            // Let others know that loading is considered finished:
            // (TODO: maybe move this elsewhere?
            PatientEventSystem.triggerEvent( PatientEventSystem.Event.PATIENT_FinishedLoading );
        }
    }
    void updateInfo ()
    {
        string info = "";
        foreach( string s in activeJobs )
        {
            info += s + ": Loading\n";
        }
        //mTextLoadingProcess.text = info;
    }

}