Refactor UncivShowableException (#6899)

android/assets/jsons/translations/template.properties

@@ -1437,6 +1437,12 @@ Invisible to others =
 Bison = 
 Cocoa = 
 
+# Exceptions that _may_ be shown to the user
+
+Building '[buildingName]' is buildable and therefore must either have an explicit cost or reference an existing tech. = 
+Nation [nationName] is not found! = 
+Unit [unitName] doesn't seem to exist! = 
+
 
 # In English we just paste all these conditionals at the end of each unique, but in your language that
 # may not turn into valid sentences. Therefore we have the following two translations to determine
@@ -1467,5 +1473,3 @@ ConditionalsPlacement =
 
 
 ########################### AUTOMATICALLY GENERATED TRANSLATABLE STRINGS ########################### 
-
-

core/src/com/unciv/logic/GameInfo.kt

@@ -22,9 +22,6 @@ import com.unciv.ui.audio.MusicTrackChooserFlags
 import java.util.*
 
 
-class MissingModsException(val missingMods: String) : UncivShowableException("Missing mods: [$missingMods]")
-open class UncivShowableException(errorText: String) : Exception(errorText)
-
 class GameInfo {
     //region Fields - Serialized
     var civilizations = mutableListOf<CivilizationInfo>()

core/src/com/unciv/logic/UncivExceptions.kt

@@ -0,0 +1,24 @@
+package com.unciv.logic
+
+import com.unciv.models.translations.tr
+
+/**
+ * An [Exception] wrapper marking an Exception as suitable to be shown to the user.
+ *
+ * @param [errorText] should be the _**untranslated**_ error message.
+ * Use [getLocalizedMessage] to get the translated [message], _**or**_ use auto-translating helpers like .toLabel() or FormattedLine().
+ * Usual formatting (`[] or {}`) applies, as does the need to include the text in templates.properties.
+ */
+open class UncivShowableException(
+    errorText: String,
+    override val cause: Throwable? = null
+) : Exception(errorText) {
+    // override because we _definitely_ have a non-null message from [errorText]
+    override val message: String
+        get() = super.message!!
+    override fun getLocalizedMessage() = message.tr()
+}
+
+class MissingModsException(
+    val missingMods: String
+) : UncivShowableException("Missing mods: [$missingMods]")

core/src/com/unciv/models/ruleset/Ruleset.kt

@@ -355,7 +355,7 @@ class Ruleset {
         for (building in buildings.values) {
             if (building.cost == 0 && !building.hasUnique(UniqueType.Unbuildable)) {
                 val column = technologies[building.requiredTech]?.column
-                        ?: throw UncivShowableException("Building (${building.name}) is buildable and therefore must either have an explicit cost or reference an existing tech")
+                        ?: throw UncivShowableException("Building '[${building.name}]' is buildable and therefore must either have an explicit cost or reference an existing tech.")
                 building.cost = if (building.isAnyWonder()) column.wonderCost else column.buildingCost
             }
         }
@@ -982,7 +982,7 @@ object RulesetCache : HashMap<String,Ruleset>() {
             // This happens if a building is dependent on a tech not in the base ruleset
             //  because newRuleset.updateBuildingCosts() in getComplexRuleset() throws an error
             Ruleset.RulesetErrorList()
-                .apply { add(ex.message!!.tr(), Ruleset.RulesetErrorSeverity.Error) }
+                .apply { add(ex.message, Ruleset.RulesetErrorSeverity.Error) }
         }
     }
 

core/src/com/unciv/ui/mapeditor/MapEditorLoadTab.kt

@@ -122,7 +122,7 @@ class MapEditorLoadTab(
                     val rulesetIncompatibilities = map.getRulesetIncompatibility(ruleset)
                     if (rulesetIncompatibilities.isNotEmpty()) {
                         map.removeMissingTerrainModReferences(ruleset)
-                        val message = "{This map has errors:}\n\n".tr() +
+                        val message = "{This map has errors:}\n\n" +
                                 rulesetIncompatibilities.sorted().joinToString("\n") { it.tr() } +
                                 "\n\n{The incompatible elements have been removed.}"
                         ToastPopup(message, editorScreen, 4000L)
@@ -134,7 +134,7 @@ class MapEditorLoadTab(
                 } catch (ex: Throwable) {
                     needPopup = false
                     popup?.close()
-                    println("Error displaying map \"$chosenMap\": ${ex.localizedMessage}")
+                    println("Error displaying map \"$chosenMap\": ${ex.message}")
                     Gdx.input.inputProcessor = editorScreen.stage
                     ToastPopup("Error loading map!", editorScreen)
                 }
@@ -143,9 +143,9 @@ class MapEditorLoadTab(
             needPopup = false
             Gdx.app.postRunnable {
                 popup?.close()
-                println("Error loading map \"$chosenMap\": ${ex.localizedMessage}")
-                ToastPopup("Error loading map!".tr() +
-                        (if (ex is UncivShowableException) "\n" + ex.message else ""), editorScreen)
+                println("Error loading map \"$chosenMap\": ${ex.message}")
+                ToastPopup("{Error loading map!}" +
+                        (if (ex is UncivShowableException) "\n{${ex.message}}" else ""), editorScreen)
             }
         }
     }