Display the currently researched tech in the lower right box

#392

C7/C7Game.tscn

@@ -259,6 +259,7 @@ script = ExtResource("3")
 [connection signal="ShowSpecificAdvisor" from="." to="CanvasLayer/Advisor" method="OnShowSpecificAdvisor"]
 [connection signal="TurnEnded" from="." to="CanvasLayer/Control/GameStatus" method="OnTurnEnded"]
 [connection signal="TurnStarted" from="." to="CanvasLayer/Control/GameStatus" method="OnTurnStarted"]
+[connection signal="UpdateTechProgress" from="." to="CanvasLayer/Control/GameStatus" method="OnUpdateTechProgress"]
 [connection signal="BuildCity" from="CanvasLayer/PopupOverlay" to="." method="OnBuildCity"]
 [connection signal="HidePopup" from="CanvasLayer/PopupOverlay" to="CanvasLayer/PopupOverlay" method="OnHidePopup"]
 [connection signal="Quit" from="CanvasLayer/PopupOverlay" to="." method="OnQuitTheGame"]

C7/Game.cs

@@ -13,6 +13,7 @@ public partial class Game : Node2D {
 	[Signal] public delegate void ShowSpecificAdvisorEventHandler();
 	[Signal] public delegate void NewAutoselectedUnitEventHandler();
 	[Signal] public delegate void NoMoreAutoselectableUnitsEventHandler();
+	[Signal] public delegate void UpdateTechProgressEventHandler();
 
 	private ILogger log = LogManager.ForContext<Game>();
 
@@ -212,6 +213,10 @@ public void processEngineMessages(GameData gameData) {
 					// F6 is the science advisor.
 					// TODO: Move the F* key strings to a set of constants/enum.
 					EmitSignal(SignalName.ShowSpecificAdvisor, "F6");
+					Tech tech = gameData.techs.Find(x => x.id == gameData.GetHumanPlayers()[0].currentlyResearchedTech);
+
+					// TODO: calculate research speed.
+					EmitSignal(SignalName.UpdateTechProgress, tech.Name, -1);
 					break;
 			}
 		}

C7/UIElements/GameStatus/GameStatus.cs

@@ -37,4 +37,8 @@ private void OnTurnStarted(int turnNumber) {
 	private void OnNoMoreAutoselectableUnits() {
 		LowerRightInfoBox.SetEndOfTurnStatus();
 	}
+
+	private void OnUpdateTechProgress(string techName, int turnsRemaining) {
+		LowerRightInfoBox.UpdateTechProgress(techName, turnsRemaining);
+	}
 }

C7/UIElements/GameStatus/LowerRightInfoBox.cs

@@ -15,6 +15,7 @@ public partial class LowerRightInfoBox : TextureRect {
 	Label attackDefenseMovement = new Label();
 	Label terrainType = new Label();
 	Label yearAndGold = new Label();
+	Label scienceProgress = new();
 
 	Timer blinkingTimer = new Timer();
 	bool timerStarted = false;  //This "isStopped" returns false if it's never been started.  So we need this to know if we've ever started it.
@@ -68,26 +69,18 @@ private void CreateUI() {
 		terrainType.OffsetRight = -30;
 		boxRightRectangle.AddChild(terrainType);
 
-		//For the centered labels, we anchor them center, with equal weight on each side.
-		//Then, when they are visible, we add a left margin that's negative and equal to half
-		//their width.
-		//Seems like there probably is an easier way, but I haven't found it yet.
 		Label civAndGovt = new Label();
-		civAndGovt.Text = "Carthage - Despotism (5.5.0)";
-		civAndGovt.HorizontalAlignment = HorizontalAlignment.Center;
-		civAndGovt.SetPosition(new Vector2(0, 90));
-		civAndGovt.AnchorLeft = 0.5f;
-		civAndGovt.AnchorRight = 0.5f;
+		civAndGovt.SetPosition(new Vector2(0, 75));
 		boxRightRectangle.AddChild(civAndGovt);
-		civAndGovt.OffsetLeft = -1 * (civAndGovt.Size.X / 2.0f);
+		SetTextAndCenterLabel(civAndGovt, "Carthage - Despotism (5.5.0)");
 
-		yearAndGold.Text = "Turn 0  10 Gold (+0 per turn)";
-		yearAndGold.HorizontalAlignment = HorizontalAlignment.Center;
-		yearAndGold.SetPosition(new Vector2(0, 105));
-		yearAndGold.AnchorLeft = 0.5f;
-		yearAndGold.AnchorRight = 0.5f;
+		yearAndGold.SetPosition(new Vector2(0, 90));
 		boxRightRectangle.AddChild(yearAndGold);
-		yearAndGold.OffsetLeft = -1 * (yearAndGold.Size.X / 2.0f);
+		SetTextAndCenterLabel(yearAndGold, "Turn 0  10 Gold (+0 per turn)");
+
+		scienceProgress.SetPosition(new Vector2(0, 105));
+		boxRightRectangle.AddChild(scienceProgress);
+		SetTextAndCenterLabel(scienceProgress, "");
 
 		//Setup up, but do not start, the timer.
 		blinkingTimer.OneShot = false;
@@ -153,4 +146,25 @@ public void UpdateUnitInfo(MapUnit NewUnit, TerrainType terrain) {
 	public void SetTurn(int turnNumber) {
 		yearAndGold.Text = $"Turn {turnNumber}  10 Gold (+0 per turn)";
 	}
+
+	public void UpdateTechProgress(string techName, int turnsRemaining) {
+		if (turnsRemaining > 0) {
+			SetTextAndCenterLabel(scienceProgress,  $"{techName} (-- turns)");
+		} else {
+			SetTextAndCenterLabel(scienceProgress,  $"{techName} ({turnsRemaining} turns)");
+		}
+	}
+
+	private void SetTextAndCenterLabel(Label label, string text) {
+		//For the centered labels, we anchor them center, with equal weight on each side.
+		//Then, when they are visible, we add a left margin that's negative and equal to half
+		//their width.
+		//Seems like there probably is an easier way, but I haven't found it yet.
+		label.Text = text;
+		label.HorizontalAlignment = HorizontalAlignment.Center;
+		label.AnchorLeft = 0.5f;
+		label.AnchorRight = 0.5f;
+		label.OffsetLeft = -1 * (label.Size.X / 2.0f);
+
+	}
 }