SCAN_UI_Instruments.cs

#region license
/* 
 * [Scientific Committee on Advanced Navigation]
 * 			S.C.A.N. Satellite
 *
 * SCAN_UI_Instruments - UI control object for SCANsat instruments readout
 * 
 * Copyright (c)2014 David Grandy <david.grandy@gmail.com>;
 * Copyright (c)2014 technogeeky <technogeeky@gmail.com>;
 * Copyright (c)2014 (Your Name Here) <your email here>; see LICENSE.txt for licensing details.
 */
#endregion

using System;
using System.Collections.Generic;
using System.Text;
using UnityEngine;
using SCANsat.SCAN_Toolbar;
using SCANsat.Unity.Interfaces;
using SCANsat.Unity.Unity;
using SCANsat.SCAN_Data;
using SCANsat.SCAN_UI.UI_Framework;
using SCANsat.SCAN_PartModules;
using FinePrint;
using FinePrint.Utilities;
using KSP.UI;

namespace SCANsat.SCAN_Unity
{
	public class SCAN_UI_Instruments : ISCAN_Instruments
	{
		private bool _isVisible;
		private SCANremoteView _anomalyView;
		private SCANtype sensors;
		private SCANdata data;
		private SCANanomaly nearest = null;
		private Vessel v;
		private List<SCANresourceDisplay> resourceScanners = new List<SCANresourceDisplay>();
		private List<SCANresourceGlobal> resources = new List<SCANresourceGlobal>();
		private int currentResource;
		private double degreeOffset;
		private double vlat, vlon;
		private float lastUpdate = 0f;
		private float updateInterval = 0.2f;
		private double slopeAVG;
		private StringBuilder infoString = new StringBuilder();
		private string slopeString;

		private Texture2D anomalyTex;

		private SCAN_Instruments uiElement;
		
		private static SCAN_UI_Instruments instance;

		public static SCAN_UI_Instruments Instance
		{
			get { return instance; }
		}

		public SCAN_UI_Instruments()
		{
			instance = this;

			data = SCANUtil.getData(FlightGlobals.currentMainBody);

			if (data == null)
			{
				data = new SCANdata(FlightGlobals.currentMainBody);
				SCANcontroller.controller.addToBodyData(FlightGlobals.currentMainBody, data);
			}
			planetConstants(FlightGlobals.currentMainBody);

			v = FlightGlobals.ActiveVessel;
			resources = SCANcontroller.setLoadedResourceList();
			resetResourceList();

			GameEvents.onVesselSOIChanged.Add(soiChange);
			GameEvents.onVesselChange.Add(vesselChange);
			GameEvents.onVesselWasModified.Add(vesselChange);
		}

		private void soiChange(GameEvents.HostedFromToAction<Vessel, CelestialBody> VC)
		{
			data = SCANUtil.getData(VC.to);
			if (data == null)
			{
				data = new SCANdata(VC.to);
				SCANcontroller.controller.addToBodyData(VC.to, data);
			}
			planetConstants(VC.to);
		}

		private void vesselChange(Vessel V)
		{
			v = FlightGlobals.ActiveVessel;
			resetResourceList();
		}

		public void SetScale(float scale)
		{
			if (uiElement != null)
				uiElement.SetScale(scale);
		}

		public void ProcessTooltips()
		{
			if (uiElement != null)
				uiElement.ProcessTooltips();
		}

		public void Update()
		{
			if (!_isVisible || uiElement == null)
				return;

			vlat = SCANUtil.fixLatShift(v.latitude);
			vlon = SCANUtil.fixLonShift(v.longitude);

			sensors = SCANcontroller.controller.activeSensorsOnVessel(v.id);

			if (SCANUtil.isCovered(vlon, vlat, data, SCANtype.AltimetryLoRes))
			{
				sensors |= SCANtype.AltimetryLoRes;
			}

			if (SCANUtil.isCovered(vlon, vlat, data, SCANtype.AltimetryHiRes))
			{
				sensors |= SCANtype.AltimetryHiRes;
			}

			if (SCANUtil.isCovered(vlon, vlat, data, SCANtype.Biome))
			{
				sensors |= SCANtype.Biome;
			}

			foreach (SCANresourceGlobal s in resources)
			{
				if (SCANUtil.isCovered(vlon, vlat, data, s.SType))
					sensors |= s.SType;
			}

			if (SCANUtil.isCovered(vlon, vlat, data, SCANtype.FuzzyResources))
				sensors |= SCANtype.FuzzyResources;

			infoString.Length = 0;

			locationInfo();
			altInfo();
			biomeInfo();
			resourceInfo();
			anomalyInfo();
			BTDTInfo();

			uiElement.UpdateText(infoString.ToString());			
		}

		public void OnDestroy()
		{
			if (uiElement != null)
			{
				uiElement.gameObject.SetActive(false);
				MonoBehaviour.Destroy(uiElement.gameObject);
			}

			GameEvents.onVesselSOIChanged.Remove(soiChange);
			GameEvents.onVesselChange.Remove(vesselChange);
			GameEvents.onVesselWasModified.Remove(vesselChange);
		}

		public void Open()
		{
			uiElement = GameObject.Instantiate(SCAN_UI_Loader.InstrumentsPrefab).GetComponent<SCAN_Instruments>();

			if (uiElement == null)
				return;

			uiElement.transform.SetParent(UIMasterController.Instance.mainCanvas.transform, false);

			infoString = StringBuilderCache.Acquire();

			uiElement.SetInstruments(this);

			_isVisible = true;

			if (HighLogic.LoadedSceneIsFlight && SCAN_Settings_Config.Instance.StockToolbar && SCAN_Settings_Config.Instance.ToolbarMenu)
			{
				if (SCANappLauncher.Instance != null && SCANappLauncher.Instance.UIElement != null)
					SCANappLauncher.Instance.UIElement.SetInstrumentToggle(true);
			}
		}

		public void Close()
		{
			_isVisible = false;

			if (uiElement == null)
				return;

			uiElement.FadeOut();

			if (HighLogic.LoadedSceneIsFlight && SCAN_Settings_Config.Instance.StockToolbar && SCAN_Settings_Config.Instance.ToolbarMenu)
			{
				if (SCANappLauncher.Instance != null && SCANappLauncher.Instance.UIElement != null)
					SCANappLauncher.Instance.UIElement.SetInstrumentToggle(false);
			}
		}

		public string Version
		{
			get { return SCANmainMenuLoader.SCANsatVersion; }
		}

		public string Readout
		{
			get { return infoString.ToString(); }
		}

		public string ResourceName
		{
			get { return resources[currentResource].Name; }
		}

		public string TypingText
		{
			get { return ""; }
		}

		public string AnomalyText
		{
			get { return ""; }
		}

		public bool IsVisible
		{
			get { return _isVisible; }
			set
			{
				_isVisible = value;

				if (!value)
				{
					Close();
					infoString.Release();
				}
			}
		}

		public bool ResourceButtons
		{
			get { return SCANcontroller.MasterResourceCount > 1; }
		}

		public bool Anomaly
		{
			get { return false; }
		}

		public bool TooltipsOn
		{
			get { return SCAN_Settings_Config.Instance.WindowTooltips; }
		}

		public float Scale
		{
			get { return SCAN_Settings_Config.Instance.UIScale; }
		}

		public Texture AnomalyCamera
		{
			get { return null; }
		}

		public Canvas TooltipCanvas
		{
			get { return UIMasterController.Instance.tooltipCanvas; }
		}

		public Vector2 Position
		{
			get { return SCAN_Settings_Config.Instance.InstrumentsPosition; }
			set { SCAN_Settings_Config.Instance.InstrumentsPosition = value; }
		}

		public void ClampToScreen(RectTransform rect)
		{
			UIMasterController.ClampToScreen(rect, Vector2.zero);
		}

		public void NextResource()
		{
			currentResource += 1;

			if (currentResource >= resources.Count)
				currentResource = 0;
		}

		public void PreviousResource()
		{
			currentResource -= 1;

			if (currentResource < 0)
				currentResource = resources.Count - 1;
		}

		private void locationInfo()
		{
			infoString.AppendFormat("Lat: {0:F2}°, Lon: {1:F2}°", vlat, vlon);

			foreach (SCANwaypoint p in data.Waypoints)
			{
				if (p.LandingTarget)
				{
					double distance = SCANUtil.waypointDistance(vlat, vlon, v.altitude, p.Latitude, p.Longitude, v.altitude, data.Body);
					if (distance <= 15000)
					{
						infoString.AppendLine();
						infoString.AppendFormat("Target Dist: {0:N1}m", distance);
					}
					continue;
				}

				if (p.Band == FlightBand.NONE)
					continue;

				if (p.Root != null)
				{
					if (p.Root.ContractState != Contracts.Contract.State.Active)
						continue;
				}

				if (p.Param != null)
				{
					if (p.Param.State != Contracts.ParameterState.Incomplete)
						continue;
				}

				double range = waypointRange(p);

				if (SCANUtil.waypointDistance(vlat, vlon, v.altitude, p.Latitude, p.Longitude, v.altitude, data.Body) <= range)
				{
					infoString.AppendLine();
					infoString.AppendFormat("Waypoint: {0}", p.Name);
					break;
				}
			}
		}

		private void biomeInfo()
		{
			if ((sensors & SCANtype.Biome) != SCANtype.Nothing && v.mainBody.BiomeMap != null)
			{
				infoString.AppendLine();
				infoString.AppendFormat("Biome: {0}", SCANUtil.getBiomeName(v.mainBody, vlon, vlat));
			}
		}

		private void altInfo()
		{
			double h = v.altitude;
			double pqs = 0;
			if (v.mainBody.pqsController != null)
			{
				pqs = v.PQSAltitude();
				if (pqs > 0 || !v.mainBody.ocean)
					h -= pqs;
			}
			if (h < 0)
				h = v.altitude;

			bool drawSlope = false;

			switch (v.situation)
			{
				case Vessel.Situations.LANDED:
				case Vessel.Situations.PRELAUNCH:
					infoString.AppendLine();
					infoString.AppendFormat("Terrain: {0:N1}m", pqs);
					drawSlope = true;
					break;
				case Vessel.Situations.SPLASHED:
					double d = Math.Abs(pqs) - Math.Abs(h);
					if ((sensors & SCANtype.Altimetry) != SCANtype.Nothing)
					{
						infoString.AppendLine();
						infoString.AppendFormat("Depth: {0}", SCANuiUtil.distanceString(Math.Abs(d), 10000));
					}
					else
					{
						d = ((int)(d / 100)) * 100;
						infoString.AppendLine();
						infoString.AppendFormat("Depth: {0}", SCANuiUtil.distanceString(Math.Abs(d), 10000));
					}
					drawSlope = false;
					break;
				default:
					if (h < 1000 || (sensors & SCANtype.AltimetryHiRes) != SCANtype.Nothing)
					{
						infoString.AppendLine();
						infoString.AppendFormat("Altitude: {0}", SCANuiUtil.distanceString(h, 100000));
						drawSlope = true;
					}
					else if ((sensors & SCANtype.AltimetryLoRes) != SCANtype.Nothing)
					{
						h = ((int)(h / 500)) * 500;
						infoString.AppendLine();
						infoString.AppendFormat("Altitude: {0}", SCANuiUtil.distanceString(h, 100000));
						drawSlope = false;
					}
					break;
			}

			if (drawSlope)
			{
				//Calculate slope less frequently; the rapidly changing value makes it difficult to read otherwise
				if (v.mainBody.pqsController != null)
				{
					float deltaTime = 1f;
					if (Time.deltaTime != 0)
						deltaTime = TimeWarp.deltaTime / Time.deltaTime;
					if (deltaTime > 5)
						deltaTime = 5;
					if (((Time.time * deltaTime) - lastUpdate) > updateInterval)
					{
						lastUpdate = Time.time;

						slopeAVG = SCANUtil.slope(pqs, v.mainBody, vlon, vlat, degreeOffset);
						slopeString = string.Format("Slope: {0:F2}°", slopeAVG);
					}

					infoString.AppendLine();
					infoString.Append(slopeString);
				}
			}
		}

		private void resourceInfo()
		{
			if (v.mainBody.pqsController == null)
				return;

			if (SCAN_Settings_Config.Instance.RequireNarrowBand)
			{
				bool tooHigh = false;
				bool scanner = false;

				foreach (SCANresourceDisplay s in resourceScanners)
				{
					if (s == null)
						continue;

					if (s.ResourceName != resources[currentResource].Name)
						continue;

					if (ResourceUtilities.GetAltitude(v) > s.MaxAbundanceAltitude && !v.Landed)
					{
						tooHigh = true;
						continue;
					}

					scanner = true;
					tooHigh = false;
					break;
				}

				resourceLabel(resources[currentResource], tooHigh, scanner);
			}
			else
			{
				resourceLabel(resources[currentResource], false, true);
			}
		}

		private void resourceLabel(SCANresourceGlobal r, bool high, bool onboard)
		{
			if ((sensors & r.SType) != SCANtype.Nothing)
			{
				if (high || !onboard)
				{
					infoString.AppendLine();
					infoString.AppendFormat("{0}: {1:P0}", r.Name, SCANUtil.ResourceOverlay(vlat, vlon, r.Name, v.mainBody, SCAN_Settings_Config.Instance.BiomeLock));
				}
				else
				{
					infoString.AppendLine();
					infoString.AppendFormat("{0}: {1:P2}", r.Name, SCANUtil.ResourceOverlay(vlat, vlon, r.Name, v.mainBody, SCAN_Settings_Config.Instance.BiomeLock));
				}
			}
			else if ((sensors & SCANtype.FuzzyResources) != SCANtype.Nothing)
			{
				infoString.AppendLine();
				infoString.AppendFormat("{0}: {1:P0}", r.Name, SCANUtil.ResourceOverlay(vlat, vlon, r.Name, v.mainBody, SCAN_Settings_Config.Instance.BiomeLock));
			}
			else if (ResourceButtons)
			{
				infoString.AppendLine();
				infoString.AppendFormat("{0}: No Data", r.Name);
			}
		}

		private void anomalyInfo()
		{
			if ((sensors & SCANtype.AnomalyDetail) != SCANtype.Nothing)
			{
				nearest = null;
				double nearest_dist = -1;
				foreach (SCANanomaly a in data.Anomalies)
				{
					if (!a.Known)
						continue;
					double d = (a.Mod.transform.position - v.transform.position).magnitude;
					if (d < nearest_dist || nearest_dist < 0)
					{
						if (d < 50000)
						{
							nearest = a;
							nearest_dist = d;
						}
					}
				}

				if (nearest != null)
				{
					infoString.AppendLine();

					if (nearest.Detail)
						infoString.Append(nearest.Name);
					else
						infoString.Append("Anomaly");
				}
			}
			else
				nearest = null;
		}

		private void BTDTInfo()
		{
			if (nearest == null || !nearest.Detail || nearest.Mod == null)
			{
				uiElement.SetDetailState(false);
				return;
			}

			uiElement.SetDetailState(true);

			if (false)
			{
				uiElement.UpdateAnomaly(anomalyTex);

				int count = 1;
				string aName = "";
				double dist = (v.transform.position - new Vector3()).magnitude;

				uiElement.UpdateAnomalyText(string.Format("Identified {0} structure{1}", count, count > 1 ? "s" : ""));
				uiElement.UpdateAnomalyName(string.Format("{0}\n{1}", aName, distanceString(dist)));
			}

			//....

			
		}

		private string distanceString(double dist)
		{
			if (dist < 5000)
				return string.Format("{0:N1}m", dist);

			return string.Format("{0:N3}km", dist / 1000);
		}

		private double waypointRange(SCANwaypoint p)
		{
			double min = ContractDefs.Survey.MinimumTriggerRange;
			double max = ContractDefs.Survey.MaximumTriggerRange;

			switch (p.Band)
			{
				case FlightBand.GROUND:
					return min;
				case FlightBand.LOW:
					return (min + max) / 2;
				case FlightBand.HIGH:
					return max;
				default:
					return max;
			}
		}

		private void planetConstants(CelestialBody b)
		{
			double circum = b.Radius * 2 * Math.PI;
			double eqDistancePerDegree = circum / 360;
			degreeOffset = 5 / eqDistancePerDegree;
		}

		public void resetResourceList()
		{
			resourceScanners = new List<SCANresourceDisplay>();

			if (v == null)
				return;

			foreach (SCANresourceDisplay s in v.FindPartModulesImplementing<SCANresourceDisplay>())
			{
				if (s == null)
					continue;

				if (resourceScanners.Contains(s))
					continue;

				resourceScanners.Add(s);
			}
		}

		public void ResetPosition()
		{
			SCAN_Settings_Config.Instance.InstrumentsPosition = new Vector2(100, -500);

			if (uiElement != null)
				uiElement.SetPosition(SCAN_Settings_Config.Instance.InstrumentsPosition);
		}
	}
}