Career mode compatibility (fixes #4)

Author: HebaruSan

GameData/PlanningNode/Localization/en-us.cfg

@@ -2,9 +2,12 @@ Localization
 {
 	en-us
 	{
-		PlanningNode_mainTitle       = Planning Node
-		PlanningNode_mainTooltip     = Plan maneuver nodes from your parent body
-		PlanningNode_viewOnlyTooltip = Switch to a vessel to create planning nodes
+		PlanningNode_mainTitle            = Planning Node
+		PlanningNode_mainTooltip          = Plan maneuver nodes from your parent body
+		PlanningNode_viewOnlyTooltip      = Switch to a vessel to create planning nodes
+		PlanningNode_unlockBothTooltip    = Upgrade your tracking station and mission control to access planning nodes
+		PlanningNode_unlockStationTooltip = Upgrade your tracking station to access planning nodes
+		PlanningNode_unlockMisConTooltip  = Upgrade your mission control to access planning nodes
 
 		PlanningNode_editorTitle = Planning Node  v<<1>>.<<2>>.<<3>>
 

GameData/PlanningNode/Localization/zh-cn.cfg

@@ -2,9 +2,12 @@ Localization
 {
 	zh-cn
 	{
-		PlanningNode_mainTitle       = 深空变轨计划
-		PlanningNode_mainTooltip     = 在你目前环绕的母星的轨道上，策划一个机动点！
-		PlanningNode_viewOnlyTooltip = 切换到某一载具来策划机动点。
+		PlanningNode_mainTitle            = 深空变轨计划
+		PlanningNode_mainTooltip          = 在你目前环绕的母星的轨道上，策划一个机动点！
+		PlanningNode_viewOnlyTooltip      = 切换到某一载具来策划机动点。
+		PlanningNode_unlockBothTooltip    = 升级追踪站和任务中心来解锁深空机动点
+		PlanningNode_unlockStationTooltip = 升级追踪站来解锁深空机动点
+		PlanningNode_unlockMisConTooltip  = 升级任务中心来解锁深空机动点
 
 		PlanningNode_editorTitle = 深空变轨计划  v<<1>>.<<2>>.<<3>>
 

GameData/PlanningNode/PlanningNode-Changelog.cfg

@@ -10,6 +10,11 @@ KERBALCHANGELOG
 		version = 0.1.4
 		versionName = Sharpening the Axe
 		versionKSP = 1.11
+		CHANGE
+		{
+			change = Require mission control and tracking station upgrades in career mode
+			type = Fix
+		}
 	}
 	VERSION
 	{

Source/PlanningNodeAddonBase.cs

@@ -104,11 +104,18 @@ private void AddLauncher()
 					launcher?.Disable(true);
 				}
 
+				string lockReason;
+				if (!unlocked(out lockReason)) {
+					launcher?.Disable(true);
+				}
+
 				launcher?.gameObject?.SetTooltip(
 					"PlanningNode_mainTitle",
 					launcher.IsEnabled 
 						? "PlanningNode_mainTooltip"
-						: "PlanningNode_viewOnlyTooltip"
+						: string.IsNullOrEmpty(lockReason)
+							? "PlanningNode_viewOnlyTooltip"
+							: lockReason
 				);
 			}
 		}
@@ -121,6 +128,40 @@ private void RemoveLauncher()
 			}
 		}
 
+		/// <summary>
+		/// Check whether the mod should be available for use in the current save.
+		/// We need patched conics and flight planning.
+		/// </summary>
+		/// <param name="reason">User friendly explanation of why we're not available</param>
+		/// <returns>
+		/// true if unlocked, false if locked
+		/// </returns>
+		private static bool unlocked(out string reason)
+		{
+			if (ScenarioUpgradeableFacilities.Instance == null) {
+				reason = "";
+				return true;
+			}
+			var gVars        = GameVariables.Instance;
+			var stationLevel = ScenarioUpgradeableFacilities.GetFacilityLevel(SpaceCenterFacility.TrackingStation);
+			var stationOK    = gVars.GetOrbitDisplayMode(stationLevel) == GameVariables.OrbitDisplayMode.PatchedConics;
+			var missionLevel = ScenarioUpgradeableFacilities.GetFacilityLevel(SpaceCenterFacility.MissionControl);
+			var missionOK    = gVars.UnlockedFlightPlanning(missionLevel);
+			if (!stationOK) {
+				reason = !missionOK ? "PlanningNode_unlockBothTooltip"
+				                    : "PlanningNode_unlockStationTooltip";
+				return false;
+			} else {
+				if (!missionOK) {
+					reason = "PlanningNode_unlockMisConTooltip";
+					return false;
+				} else {
+					reason = "";
+					return true;
+				}
+			}
+		}
+
 		/// <summary>
 		/// This is called when they click our toolbar button
 		/// </summary>

Source/PlanningNodeAddonFlight.cs

@@ -86,8 +86,8 @@ private void OnManeuverNodeSelected()
 
 		private ManeuverNode OpenManeuver(Vessel v)
 		{
-			var nodes = v.patchedConicSolver.maneuverNodes;
-			for (int i = 0; i < nodes.Count; ++i) {
+			var nodes = v.patchedConicSolver?.maneuverNodes;
+			for (int i = 0; i < (nodes?.Count ?? 0); ++i) {
 				ManeuverNode nd = nodes[i];
 				if (nd.attachedGizmo != null) {
 					return nd;
@@ -107,7 +107,7 @@ private void OnAutoTimeClick()
 					if (newTime.HasValue) {
 						nd.attachedGizmo.orbitsAdded += (int)Math.Round((newTime.Value - nd.UT) / renderer.vessel.orbit.period);
 						nd.UT = newTime.Value;
-						renderer.vessel.patchedConicSolver.UpdateFlightPlan();
+						renderer.vessel.patchedConicSolver?.UpdateFlightPlan();
 					}
 				}
 				nd.attachedGizmo?.SetMouseOverGizmo(true);