Support more freely modded Worker-like units (#6339)

* TileImprovementTime UniqueType supports UniqueTarget.Unit

* Reduce UniqueType.ConstructImprovementConsumingUnit hardcoded Great People behaviour

* Some linting

Co-authored-by: Yair Morgenstern <yairm210@hotmail.com>

core/src/com/unciv/logic/automation/WorkerAutomation.kt

@@ -146,7 +146,7 @@ class WorkerAutomation(
             && tileCanBeImproved(unit, currentTile)) {
             if (WorkerAutomationConst.consoleOutput)
                 println("WorkerAutomation: ${unit.label()} -> start improving $currentTile")
-            return currentTile.startWorkingOnImprovement(chooseImprovement(unit, currentTile)!!, civInfo)
+            return currentTile.startWorkingOnImprovement(chooseImprovement(unit, currentTile)!!, civInfo, unit)
         }
 
         if (currentTile.improvementInProgress != null) return // we're working!
@@ -206,7 +206,7 @@ class WorkerAutomation(
                 BFS(toConnectTile, isCandidateTilePredicate).apply {
                     maxSize = HexMath.getNumberOfTilesInHexagon(
                         WorkerAutomationConst.maxBfsReachPadding +
-                        tilesOfConnectedCities.map { it.aerialDistanceTo(toConnectTile) }.minOrNull()!!
+                            tilesOfConnectedCities.minOf { it.aerialDistanceTo(toConnectTile) }
                     )
                     bfsCache[toConnectTile.position] = this@apply
                 }
@@ -234,7 +234,7 @@ class WorkerAutomation(
                     if (unit.currentMovement > 0 && currentTile == tileToConstructRoadOn
                         && currentTile.improvementInProgress != bestRoadAvailable.name) {
                         val improvement = bestRoadAvailable.improvement(ruleSet)!!
-                        tileToConstructRoadOn.startWorkingOnImprovement(improvement, civInfo)
+                        tileToConstructRoadOn.startWorkingOnImprovement(improvement, civInfo, unit)
                     }
                     if (WorkerAutomationConst.consoleOutput)
                         println("WorkerAutomation: ${unit.label()} -> connect city ${bfs.startingPoint.getCity()?.name} to ${cityTile.getCity()!!.name} on $tileToConstructRoadOn")

core/src/com/unciv/logic/map/TileInfo.kt

@@ -193,12 +193,12 @@ open class TileInfo {
     // We have to .toList() so that the values are stored together once for caching,
     // and the toSequence so that aggregations (like neighbors.flatMap{it.units} don't take up their own space
 
-    /** Returns the left shared neighbor of [this] and [neighbor] (relative to the view direction [this]->[neighbor]), or null if there is no such tile. */
+    /** Returns the left shared neighbor of `this` and [neighbor] (relative to the view direction `this`->[neighbor]), or null if there is no such tile. */
     fun getLeftSharedNeighbor(neighbor: TileInfo): TileInfo? {
         return tileMap.getClockPositionNeighborTile(this,(tileMap.getNeighborTileClockPosition(this, neighbor) - 2) % 12)
     }
 
-    /** Returns the right shared neighbor [this] and [neighbor] (relative to the view direction [this]->[neighbor]), or null if there is no such tile. */
+    /** Returns the right shared neighbor of `this` and [neighbor] (relative to the view direction `this`->[neighbor]), or null if there is no such tile. */
     fun getRightSharedNeighbor(neighbor: TileInfo): TileInfo? {
         return tileMap.getClockPositionNeighborTile(this,(tileMap.getNeighborTileClockPosition(this, neighbor) + 2) % 12)
     }
@@ -262,8 +262,8 @@ open class TileInfo {
 
     fun getTileStats(city: CityInfo?, observingCiv: CivilizationInfo?): Stats {
         var stats = getBaseTerrain().cloneStats()
-        
-        val stateForConditionals = StateForConditionals(civInfo = observingCiv, cityInfo = city, tile = this);
+
+        val stateForConditionals = StateForConditionals(civInfo = observingCiv, cityInfo = city, tile = this)
 
         for (terrainFeatureBase in terrainFeatureObjects) {
             when {
@@ -897,9 +897,10 @@ open class TileInfo {
         }
     }
 
-    fun startWorkingOnImprovement(improvement: TileImprovement, civInfo: CivilizationInfo) {
+    fun startWorkingOnImprovement(improvement: TileImprovement, civInfo: CivilizationInfo, unit: MapUnit) {
         improvementInProgress = improvement.name
-        turnsToImprovement = if (civInfo.gameInfo.gameParameters.godMode) 1 else improvement.getTurnsToBuild(civInfo)
+        turnsToImprovement = if (civInfo.gameInfo.gameParameters.godMode) 1
+            else improvement.getTurnsToBuild(civInfo, unit)
     }
 
     fun stopWorkingOnImprovement() {

core/src/com/unciv/models/ruleset/tile/TileImprovement.kt

@@ -2,10 +2,12 @@ package com.unciv.models.ruleset.tile
 
 import com.unciv.UncivGame
 import com.unciv.logic.civilization.CivilizationInfo
+import com.unciv.logic.map.MapUnit
 import com.unciv.logic.map.RoadStatus
 import com.unciv.models.ruleset.Belief
 import com.unciv.models.ruleset.Ruleset
 import com.unciv.models.ruleset.RulesetStatsObject
+import com.unciv.models.ruleset.unique.StateForConditionals
 import com.unciv.models.ruleset.unique.UniqueTarget
 import com.unciv.models.ruleset.unique.UniqueType
 import com.unciv.models.translations.tr
@@ -24,14 +26,14 @@ class TileImprovement : RulesetStatsObject() {
     val turnsToBuild: Int = 0 // This is the base cost.
 
 
-    fun getTurnsToBuild(civInfo: CivilizationInfo): Int {
-        var realTurnsToBuild = turnsToBuild.toFloat() * civInfo.gameInfo.gameParameters.gameSpeed.modifier
-        for (unique in civInfo.getMatchingUniques(UniqueType.TileImprovementTime)) {
-            realTurnsToBuild *= unique.params[0].toPercent()
-        }
+    fun getTurnsToBuild(civInfo: CivilizationInfo, unit: MapUnit?): Int {
+        val state = StateForConditionals(civInfo, unit = unit)
+        val uniques = civInfo.getMatchingUniques(UniqueType.TileImprovementTime, state) +
+            (unit?.getMatchingUniques(UniqueType.TileImprovementTime, state) ?: sequenceOf())
+        return uniques.fold(turnsToBuild.toFloat() * civInfo.gameInfo.gameParameters.gameSpeed.modifier) {
+            it, unique -> it * unique.params[0].toPercent()
+        }.roundToInt().coerceAtLeast(1)
         // In some weird cases it was possible for something to take 0 turns, leading to it instead never finishing
-        if (realTurnsToBuild < 1) realTurnsToBuild = 1f
-        return realTurnsToBuild.roundToInt()
     }
 
     fun getDescription(ruleset: Ruleset): String {
@@ -74,7 +76,7 @@ class TileImprovement : RulesetStatsObject() {
      * a terrain feature, thus the unique name.
      */
     fun isAllowedOnFeature(name: String) = getMatchingUniques(UniqueType.NoFeatureRemovalNeeded).any { it.params[0] == name }
-    
+
     fun matchesFilter(filter: String): Boolean {
         return when (filter) {
             name -> true

core/src/com/unciv/models/ruleset/unique/UniqueType.kt

@@ -79,7 +79,7 @@ enum class UniqueType(val text: String, vararg targets: UniqueTarget, val flags:
     StatsPerPopulation("[stats] per [amount] population [cityFilter]", UniqueTarget.Global, UniqueTarget.FollowerBelief),
     // ToDo: Reword to `[stats] <in cities with [amount] or more population>` for consistency with other conditionals
     StatsFromXPopulation("[stats] in cities with [amount] or more population", UniqueTarget.Global, UniqueTarget.FollowerBelief),
-    
+
     StatsFromCitiesOnSpecificTiles("[stats] in cities on [terrainFilter] tiles", UniqueTarget.Global, UniqueTarget.FollowerBelief),
     StatsFromBuildings("[stats] from all [buildingFilter] buildings", UniqueTarget.Global, UniqueTarget.FollowerBelief),
     StatsSpendingGreatPeople("[stats] whenever a Great Person is expended", UniqueTarget.Global),
@@ -98,7 +98,7 @@ enum class UniqueType(val text: String, vararg targets: UniqueTarget, val flags:
     StatPercentFromReligionFollowers("[amount]% [stat] from every follower, up to [amount]%", UniqueTarget.FollowerBelief),
     BonusStatsFromCityStates("[amount]% [stat] from City-States", UniqueTarget.Global),
     GoldBonusFromTradeRouts("Gold from all trade routes +25%", UniqueTarget.Global),
-    
+
     NullifiesStat("Nullifies [stat] [cityFilter]", UniqueTarget.Global),
     NullifiesGrowth("Nullifies Growth [cityFilter]", UniqueTarget.Global),
 
@@ -123,7 +123,7 @@ enum class UniqueType(val text: String, vararg targets: UniqueTarget, val flags:
     CityStateUniqueLuxury("Provides a unique luxury", UniqueTarget.CityState), // No conditional support as of yet
     CityStateGiftedUnitsStartWithXp("Military Units gifted from City-States start with [amount] XP", UniqueTarget.Global),
     CityStateMoreGiftedUnits("Militaristic City-States grant units [amount] times as fast when you are at war with a common nation", UniqueTarget.Global),
-    
+
     CityStateGoldGiftsProvideMoreInfluence("Gifts of Gold to City-States generate [amount]% more Influence", UniqueTarget.Global),
     CityStateCanBeBoughtForGold("Can spend Gold to annex or puppet a City-State that has been your ally for [amount] turns.", UniqueTarget.Global),
     CityStateTerritoryAlwaysFriendly("City-State territory always counts as friendly territory", UniqueTarget.Global),
@@ -132,14 +132,14 @@ enum class UniqueType(val text: String, vararg targets: UniqueTarget, val flags:
     CityStateDeprecated("Will not be chosen for new games", UniqueTarget.Nation), // implemented for CS only for now
     CityStateInfluenceDegradation("[amount]% City-State Influence degradation", UniqueTarget.Global),
     CityStateRestingPoint("Resting point for Influence with City-States is increased by [amount]", UniqueTarget.Global),
-    
+
     CityStateStatPercent("Allied City-States provide [stat] equal to [amount]% of what they produce for themselves", UniqueTarget.Global),
     CityStateResources("[amount]% resources gifted by City-States",  UniqueTarget.Global),
     CityStateLuxuryHappiness("[amount]% Happiness from luxury resources gifted by City-States", UniqueTarget.Global),
     CityStateInfluenceRecoversTwiceNormalRate("City-State Influence recovers at twice the normal rate", UniqueTarget.Global),
     // endregion
 
-    
+
     /////// region Other global uniques
 
     FreeUnits("[amount] units cost no maintenance", UniqueTarget.Global),
@@ -173,15 +173,15 @@ enum class UniqueType(val text: String, vararg targets: UniqueTarget, val flags:
     BuyBuildingsForAmountStat("May buy [buildingFilter] buildings for [amount] [stat] [cityFilter]", UniqueTarget.Global, UniqueTarget.FollowerBelief),
     BuyUnitsWithStat("May buy [baseUnitFilter] units with [stat] [cityFilter]", UniqueTarget.Global, UniqueTarget.FollowerBelief),
     BuyBuildingsWithStat("May buy [buildingFilter] buildings with [stat] [cityFilter]", UniqueTarget.Global, UniqueTarget.FollowerBelief),
-    
+
     BuyUnitsByProductionCost("May buy [baseUnitFilter] units with [stat] for [amount] times their normal Production cost", UniqueTarget.FollowerBelief, UniqueTarget.Global),
     BuyBuildingsByProductionCost("May buy [buildingFilter] buildings with [stat] for [amount] times their normal Production cost", UniqueTarget.FollowerBelief, UniqueTarget.Global),
 
-    
+
     // ToDo: Unify
     EnablesGoldProduction("Enables conversion of city production to gold", UniqueTarget.Global),
     EnablesScienceProduction("Enables conversion of city production to science", UniqueTarget.Global),
-    
+
     BuyItemsDiscount("[stat] cost of purchasing items in cities [amount]%", UniqueTarget.Global, UniqueTarget.FollowerBelief),
     BuyBuildingsDiscount("[stat] cost of purchasing [buildingFilter] buildings [amount]%", UniqueTarget.Global, UniqueTarget.FollowerBelief),
     BuyUnitsDiscount("[stat] cost of purchasing [baseUnitFilter] units [amount]%", UniqueTarget.Global, UniqueTarget.FollowerBelief),
@@ -189,10 +189,10 @@ enum class UniqueType(val text: String, vararg targets: UniqueTarget, val flags:
     // Should be replaced with moddable improvements when roads become moddable
     RoadMovementSpeed("Improves movement speed on roads",UniqueTarget.Global),
     RoadsConnectAcrossRivers("Roads connect tiles across rivers", UniqueTarget.Global),
-    RoadMaintenance("[amount]% maintenance on road & railroads", UniqueTarget.Global), 
+    RoadMaintenance("[amount]% maintenance on road & railroads", UniqueTarget.Global),
     BuildingMaintenance("[amount]% maintenance cost for buildings [cityFilter]", UniqueTarget.Global, UniqueTarget.FollowerBelief),
 
-    
+
     // This should probably support conditionals, e.g. <after discovering [tech]>
     MayanGainGreatPerson("Receive a free Great Person at the end of every [comment] (every 394 years), after researching [tech]. Each bonus person can only be chosen once.", UniqueTarget.Global),
     MayanCalendarDisplay("Once The Long Count activates, the year on the world screen displays as the traditional Mayan Long Count.", UniqueTarget.Global),
@@ -202,17 +202,17 @@ enum class UniqueType(val text: String, vararg targets: UniqueTarget, val flags:
     LessPolicyCostFromCities("Each city founded increases culture cost of policies [amount]% less than normal", UniqueTarget.Global),
     LessPolicyCost("[amount]% Culture cost of adopting new Policies", UniqueTarget.Global),
 
-    
+
     StrategicResourcesIncrease("Quantity of strategic resources produced by the empire +[amount]%", UniqueTarget.Global),  // used in Policy
     DoubleResourceProduced("Double quantity of [resource] produced", UniqueTarget.Global),
     // Todo: should probably be changed to "[stats] from every known Natural Wonder", and that'll give us the global unique as well
     DoubleHappinessFromNaturalWonders("Double Happiness from Natural Wonders", UniqueTarget.Global),
-    
+
     EnablesConstructionOfSpaceshipParts("Enables construction of Spaceship parts", UniqueTarget.Global),
     EnemyLandUnitsSpendExtraMovement("Enemy land units must spend 1 extra movement point when inside your territory (obsolete upon Dynamite)", UniqueTarget.Global),
-    
+
     ProductionToScienceConversionBonus("Production to science conversion in cities increased by 33%", UniqueTarget.Global),
-    
+
     // Misc national uniques
     NotifiedOfBarbarianEncampments("Notified of new Barbarian encampments", UniqueTarget.Global),
     BorrowsCityNames("\"Borrows\" city names from other civilizations in the game", UniqueTarget.Global),
@@ -236,24 +236,25 @@ enum class UniqueType(val text: String, vararg targets: UniqueTarget, val flags:
     // Todo can be replaced with a <within [amount] tiles of a [tileFilter] tile> conditional
     StrengthWithinTilesOfTile("+[amount]% Strength if within [amount] tiles of a [tileFilter]", UniqueTarget.Global),
     StatBonusPercentFromCityStates("[amount]% [stat] from City-States", UniqueTarget.Global),
-    
+
     ProvidesGoldWheneverGreatPersonExpended("Provides a sum of gold each time you spend a Great Person", UniqueTarget.Global),
     ProvidesStatsWheneverGreatPersonExpended("[stats] whenever a Great Person is expended", UniqueTarget.Global),
-    
+
     // Acts as a trigger - this should be generalized somehow but the current setup does not allow this
     // It would currently mean cycling through EVERY unique type to find ones with a specific conditional...
+    @Suppress("SpellCheckingInspection")  // Not worth fixing
     RecieveFreeUnitWhenDiscoveringTech("Receive free [baseUnitFilter] when you discover [tech]", UniqueTarget.Global),
-    
+
     EnablesOpenBorders("Enables Open Borders agreements", UniqueTarget.Global),
     // Should the 'R' in 'Research agreements' be capitalized?
     EnablesResearchAgreements("Enables Research agreements", UniqueTarget.Global),
     ScienceFromResearchAgreements("Science gained from research agreements [amount]%", UniqueTarget.Global),
     TriggersVictory("Triggers victory", UniqueTarget.Global),
     TriggersCulturalVictory("Triggers a Cultural Victory upon completion", UniqueTarget.Global),
-    
+
     BetterDefensiveBuildings("[amount]% City Strength from defensive buildings", UniqueTarget.Global),
-    
-    TileImprovementTime("[amount]% tile improvement construction time", UniqueTarget.Global),
+
+    TileImprovementTime("[amount]% tile improvement construction time", UniqueTarget.Global, UniqueTarget.Unit),
     PercentGoldFromTradeMissions("[amount]% Gold from Great Merchant trade missions", UniqueTarget.Global),
     // Todo: Lowercase the 'U' of 'Units' in this unique
     CityHealingUnits("[mapUnitFilter] Units adjacent to this city heal [amount] HP per turn when healing", UniqueTarget.Global, UniqueTarget.FollowerBelief),
@@ -274,7 +275,6 @@ enum class UniqueType(val text: String, vararg targets: UniqueTarget, val flags:
     EmbarkAndEnterOcean("Can embark and move over Coasts and Oceans immediately", UniqueTarget.Global),
 
     PopulationLossFromNukes("Population loss from nuclear attacks [amount]% [cityFilter]", UniqueTarget.Global),
-    
     NaturalReligionSpreadStrength("[amount]% Natural religion spread [cityFilter]", UniqueTarget.FollowerBelief, UniqueTarget.Global),
     ReligionSpreadDistance("Religion naturally spreads to cities [amount] tiles away", UniqueTarget.Global, UniqueTarget.FollowerBelief),
 
@@ -288,14 +288,14 @@ enum class UniqueType(val text: String, vararg targets: UniqueTarget, val flags:
     ResearchableMultipleTimes("Can be continually researched", UniqueTarget.Global),
 
     BaseUnitSupply("[amount] Unit Supply", UniqueTarget.Global),
-    UnitSupplyPerPop("[amount] Unit Supply per [amount] population [cityFilter]", UniqueTarget.Global), 
+    UnitSupplyPerPop("[amount] Unit Supply per [amount] population [cityFilter]", UniqueTarget.Global),
     UnitSupplyPerCity("[amount] Unit Supply per city", UniqueTarget.Global),
     UnitsInCitiesNoMaintenance("Units in cities cost no Maintenance", UniqueTarget.Global),
-    
+
     SpawnRebels("Rebel units may spawn", UniqueTarget.Global),
-    
+
     //endregion
-    
+
     //endregion Global uniques
 
     ///////////////////////////////////////// region CONSTRUCTION UNIQUES /////////////////////////////////////////
@@ -328,20 +328,20 @@ enum class UniqueType(val text: String, vararg targets: UniqueTarget, val flags:
             " OR \"Only available <starting from the [buildingName/tech/era/policy]>\"" +
             " OR \"Only available <after discovering [buildingName/tech/era/policy]>"))
     Requires("Requires [buildingName/tech/era/policy]", UniqueTarget.Building, UniqueTarget.Unit),
-    
+
     ConvertFoodToProductionWhenConstructed("Excess Food converted to Production when under construction", UniqueTarget.Building, UniqueTarget.Unit),
     RequiresPopulation("Requires at least [amount] population", UniqueTarget.Building, UniqueTarget.Unit),
 
     TriggersAlertOnStart("Triggers a global alert upon build start", UniqueTarget.Building, UniqueTarget.Unit),
     TriggersAlertOnCompletion("Triggers a global alert upon completion", UniqueTarget.Building, UniqueTarget.Unit),
     //endregion
-    
-    
+
+
     ///////////////////////////////////////// region BUILDING UNIQUES /////////////////////////////////////////
 
 
     CostIncreasesPerCity("Cost increases by [amount] per owned city", UniqueTarget.Building),
-    
+
     @Deprecated("as of 3.19.9", ReplaceWith("Only available <in cities without a [buildingName]>"))
     CannotBeBuiltWith("Cannot be built with [buildingName]", UniqueTarget.Building),
     @Deprecated("as of 3.19.9", ReplaceWith("Only available <in cities with a [buildingName]>"))
@@ -371,24 +371,24 @@ enum class UniqueType(val text: String, vararg targets: UniqueTarget, val flags:
     ObsoleteWith("Obsolete with [tech]", UniqueTarget.Building, UniqueTarget.Resource, UniqueTarget.Improvement),
     IndicatesCapital("Indicates the capital city", UniqueTarget.Building),
     ProvidesExtraLuxuryFromCityResources("Provides 1 extra copy of each improved luxury resource near this City", UniqueTarget.Building),
-    
+
     DestroyedWhenCityCaptured("Destroyed when the city is captured", UniqueTarget.Building),
     NotDestroyedWhenCityCaptured("Never destroyed when the city is captured", UniqueTarget.Building),
     DoublesGoldFromCapturingCity("Doubles Gold given to enemy if city is captured", UniqueTarget.Building),
-    
+
 
     RemoveAnnexUnhappiness("Remove extra unhappiness from annexed cities", UniqueTarget.Building),
 
     //endregion
 
-    
+
     ///////////////////////////////////////// region UNIT UNIQUES /////////////////////////////////////////
 
     FoundCity("Founds a new city", UniqueTarget.Unit),
     ConstructImprovementConsumingUnit("Can construct [improvementName]", UniqueTarget.Unit),
     BuildImprovements("Can build [improvementFilter/terrainFilter] improvements on tiles", UniqueTarget.Unit),
     CreateWaterImprovements("May create improvements on water resources", UniqueTarget.Unit),
-    
+
     Strength("[amount]% Strength", UniqueTarget.Unit, UniqueTarget.Global),
     StrengthNearCapital("[amount]% Strength decreasing with distance from the capital", UniqueTarget.Unit, UniqueTarget.Global),
     FlankAttackBonus("[amount]% to Flank Attack bonuses", UniqueTarget.Unit, UniqueTarget.Global),
@@ -400,10 +400,10 @@ enum class UniqueType(val text: String, vararg targets: UniqueTarget, val flags:
     Range("[amount] Range", UniqueTarget.Unit, UniqueTarget.Global),
     Heal("[amount] HP when healing", UniqueTarget.Unit, UniqueTarget.Global),
     SpreadReligionStrength("[amount]% Spread Religion Strength", UniqueTarget.Unit, UniqueTarget.Global),
-    
+  
     MayFoundReligion("May found a religion", UniqueTarget.Unit),
     MayEnhanceReligion("May enhance a religion", UniqueTarget.Unit),
-    
+
     CanOnlyAttackUnits("Can only attack [combatantFilter] units", UniqueTarget.Unit),
     CanOnlyAttackTiles("Can only attack [tileFilter] tiles", UniqueTarget.Unit),
     CannotAttack("Cannot attack", UniqueTarget.Unit),
@@ -411,17 +411,17 @@ enum class UniqueType(val text: String, vararg targets: UniqueTarget, val flags:
     SelfDestructs("Self-destructs when attacking", UniqueTarget.Unit),
     BlastRadius("Blast radius [amount]", UniqueTarget.Unit),
     IndirectFire("Ranged attacks may be performed over obstacles", UniqueTarget.Unit),
-    
+
     NoDefensiveTerrainBonus("No defensive terrain bonus", UniqueTarget.Unit, UniqueTarget.Global),
     NoDefensiveTerrainPenalty("No defensive terrain penalty", UniqueTarget.Unit, UniqueTarget.Global),
     Uncapturable("Uncapturable", UniqueTarget.Unit),
     MayWithdraw("May withdraw before melee ([amount]%)", UniqueTarget.Unit),
     CannotCaptureCities("Unable to capture cities", UniqueTarget.Unit),
-    
+
     NoMovementToPillage("No movement cost to pillage", UniqueTarget.Unit, UniqueTarget.Global),
     CanMoveAfterAttacking("Can move after attacking", UniqueTarget.Unit),
     MoveImmediatelyOnceBought("Can move immediately once bought", UniqueTarget.Unit),
-    
+
     HealsOutsideFriendlyTerritory("May heal outside of friendly territory", UniqueTarget.Unit, UniqueTarget.Global),
     HealingEffectsDoubled("All healing effects doubled", UniqueTarget.Unit, UniqueTarget.Global),
     HealsAfterKilling("Heals [amount] damage if it kills a unit", UniqueTarget.Unit, UniqueTarget.Global),
@@ -437,7 +437,7 @@ enum class UniqueType(val text: String, vararg targets: UniqueTarget, val flags:
     AttackAcrossCoast("Eliminates combat penalty for attacking across a coast", UniqueTarget.Unit),
 
     SixTilesAlwaysVisible("6 tiles in every direction always visible", UniqueTarget.Unit),
-    
+
     CarryAirUnits("Can carry [amount] [mapUnitFilter] units", UniqueTarget.Unit),
     CarryExtraAirUnits("Can carry [amount] extra [mapUnitFilter] units", UniqueTarget.Unit),
     CannotBeCarriedBy("Cannot be carried by [mapUnitFilter] units", UniqueTarget.Unit),
@@ -451,16 +451,16 @@ enum class UniqueType(val text: String, vararg targets: UniqueTarget, val flags:
     KillUnitPlunder("Earn [amount]% of killed [mapUnitFilter] unit's [costOrStrength] as [plunderableStat]", UniqueTarget.Unit, UniqueTarget.Global),
     KillUnitPlunderNearCity("Earn [amount]% of [mapUnitFilter] unit's [costOrStrength] as [plunderableStat] when killed within 4 tiles of a city following this religion", UniqueTarget.FollowerBelief),
     KillUnitCapture("May capture killed [mapUnitFilter] units", UniqueTarget.Unit),
-    
+
     FlatXPGain("[amount] XP gained from combat", UniqueTarget.Unit, UniqueTarget.Global),
     PercentageXPGain("[amount]% XP gained from combat", UniqueTarget.Unit, UniqueTarget.Global),
 
     Invisible("Invisible to others", UniqueTarget.Unit),
     InvisibleToNonAdjacent("Invisible to non-adjacent units", UniqueTarget.Unit),
     CanSeeInvisibleUnits("Can see invisible [mapUnitFilter] units", UniqueTarget.Unit),
-    
+
     RuinsUpgrade("May upgrade to [baseUnitFilter] through ruins-like effects", UniqueTarget.Unit),
-    
+
     // The following block gets cached in MapUnit for faster getMovementCostBetweenAdjacentTiles
     DoubleMovementOnTerrain("Double movement in [terrainFilter]", UniqueTarget.Unit),
     AllTilesCost1Move("All tiles cost 1 movement", UniqueTarget.Unit),
@@ -474,12 +474,12 @@ enum class UniqueType(val text: String, vararg targets: UniqueTarget, val flags:
     CanEnterForeignTilesButLosesReligiousStrength("May enter foreign tiles without open borders, but loses [amount] religious strength each turn it ends there", UniqueTarget.Unit),
 
     CannotBeBarbarian("Never appears as a Barbarian unit", UniqueTarget.Unit, flags = UniqueFlag.setOfHiddenToUsers),
-    
+
     ReligiousUnit("Religious Unit", UniqueTarget.Unit),
-    SpaceshipPart("Spaceship part", UniqueTarget.Unit, UniqueTarget.Building), // Usage for buildings is deprecated 
+    SpaceshipPart("Spaceship part", UniqueTarget.Unit, UniqueTarget.Building), // Usage for buildings is deprecated
     AddInCapital("Can be added to [comment] in the Capital", UniqueTarget.Unit),
 
-    
+
     //endregion
 
     ///////////////////////////////////////// region TILE UNIQUES /////////////////////////////////////////
@@ -495,7 +495,7 @@ enum class UniqueType(val text: String, vararg targets: UniqueTarget, val flags:
     // The "Except [terrainFilter]" could theoretically be implemented with a conditional
     NaturalWonderConvertNeighborsExcept("Neighboring tiles except [baseTerrain] will convert to [baseTerrain]", UniqueTarget.Terrain, flags = UniqueFlag.setOfHiddenToUsers),
     GrantsGoldToFirstToDiscover("Grants 500 Gold to the first civilization to discover it", UniqueTarget.Terrain),
-    
+
     // General terrain
     DamagesContainingUnits("Units ending their turn on this terrain take [amount] damage", UniqueTarget.Terrain),
     TerrainGrantsPromotion("Grants [promotion] ([comment]) to adjacent [mapUnitFilter] units for the rest of the game", UniqueTarget.Terrain),
@@ -505,10 +505,10 @@ enum class UniqueType(val text: String, vararg targets: UniqueTarget, val flags:
     TileProvidesYieldWithoutPopulation("Tile provides yield without assigned population", UniqueTarget.Terrain, UniqueTarget.Improvement),
     NullifyYields("Nullifies all other stats this tile provides", UniqueTarget.Terrain),
     RestrictedBuildableImprovements("Only [improvementFilter] improvements may be built on this tile", UniqueTarget.Terrain),
-    
+
     BlocksLineOfSightAtSameElevation("Blocks line-of-sight from tiles at same elevation", UniqueTarget.Terrain),
     VisibilityElevation("Has an elevation of [amount] for visibility calculations", UniqueTarget.Terrain),
-  
+
     OverrideFertility("Always Fertility [amount] for Map Generation", UniqueTarget.Terrain, flags = UniqueFlag.setOfHiddenToUsers),
     AddFertility("[amount] to Fertility for Map Generation", UniqueTarget.Terrain, flags = UniqueFlag.setOfHiddenToUsers),
 
@@ -530,21 +530,21 @@ enum class UniqueType(val text: String, vararg targets: UniqueTarget, val flags:
     ResourceFrequency("Generated on every [amount] tiles", UniqueTarget.Resource, flags = UniqueFlag.setOfHiddenToUsers),
 
     StrategicBalanceResource("Guaranteed with Strategic Balance resource option", UniqueTarget.Resource),
-  
+
     NoNaturalGeneration("Doesn't generate naturally", UniqueTarget.Terrain, UniqueTarget.Resource, flags = UniqueFlag.setOfHiddenToUsers),
     TileGenerationConditions("Occurs at temperature between [amount] and [amount] and humidity between [amount] and [amount]", UniqueTarget.Terrain, flags = UniqueFlag.setOfHiddenToUsers),
     OccursInChains("Occurs in chains at high elevations", UniqueTarget.Terrain, flags = UniqueFlag.setOfHiddenToUsers),
     OccursInGroups("Occurs in groups around high elevations", UniqueTarget.Terrain, flags = UniqueFlag.setOfHiddenToUsers),
     MajorStrategicFrequency("Every [amount] tiles with this terrain will receive a major deposit of a strategic resource.", UniqueTarget.Terrain, flags = UniqueFlag.setOfHiddenToUsers),
-  
+
     RareFeature("Rare feature", UniqueTarget.Terrain),
-    
+
     ResistsNukes("Resistant to nukes", UniqueTarget.Terrain),
     DestroyableByNukes("Can be destroyed by nukes", UniqueTarget.Terrain),
-    
+
     FreshWater("Fresh water", UniqueTarget.Terrain),
     RoughTerrain("Rough terrain", UniqueTarget.Terrain),
-    
+
     /////// Resource uniques
     ResourceAmountOnTiles("Deposits in [tileFilter] tiles always provide [amount] resources", UniqueTarget.Resource),
     CityStateOnlyResource("Can only be created by Mercantile City-States", UniqueTarget.Resource),
@@ -560,14 +560,14 @@ enum class UniqueType(val text: String, vararg targets: UniqueTarget, val flags:
     CanOnlyBeBuiltOnTile("Can only be built on [tileFilter] tiles", UniqueTarget.Improvement),
     CannotBuildOnTile("Cannot be built on [tileFilter] tiles", UniqueTarget.Improvement),
     NoFeatureRemovalNeeded("Does not need removal of [tileFilter]", UniqueTarget.Improvement),
-    
+
     DefensiveBonus("Gives a defensive bonus of [amount]%", UniqueTarget.Improvement),
     ImprovementMaintenance("Costs [amount] gold per turn when in your territory", UniqueTarget.Improvement), // Unused
     DamagesAdjacentEnemyUnits("Adjacent enemy units ending their turn take [amount] damage", UniqueTarget.Improvement),
-    
+  
     GreatImprovement("Great Improvement", UniqueTarget.Improvement),
     IsAncientRuinsEquivalent("Provides a random bonus when entered", UniqueTarget.Improvement),
-    
+
     Unpillagable("Unpillagable", UniqueTarget.Improvement),
     Indestructible("Indestructible", UniqueTarget.Improvement),
     Irremovable("Irremovable", UniqueTarget.Improvement),
@@ -575,7 +575,7 @@ enum class UniqueType(val text: String, vararg targets: UniqueTarget, val flags:
 
     ///////////////////////////////////////// region CONDITIONALS /////////////////////////////////////////
 
-    
+
     /////// civ conditionals
     ConditionalWar("when at war", UniqueTarget.Conditional),
     ConditionalNotWar("when not at war", UniqueTarget.Conditional),
@@ -585,7 +585,7 @@ enum class UniqueType(val text: String, vararg targets: UniqueTarget, val flags:
     ConditionalHappy("while the empire is happy", UniqueTarget.Conditional),
     ConditionalBetweenHappiness("when between [amount] and [amount] Happiness", UniqueTarget.Conditional),
     ConditionalBelowHappiness("when below [amount] Happiness", UniqueTarget.Conditional),
-    
+
     ConditionalDuringEra("during the [era]", UniqueTarget.Conditional),
     ConditionalBeforeEra("before the [era]", UniqueTarget.Conditional),
     ConditionalStartingFromEra("starting from the [era]", UniqueTarget.Conditional),
@@ -639,7 +639,7 @@ enum class UniqueType(val text: String, vararg targets: UniqueTarget, val flags:
 
     ///////////////////////////////////////// region TRIGGERED ONE-TIME /////////////////////////////////////////
 
-    
+
     OneTimeFreeUnit("Free [baseUnitFilter] appears", UniqueTarget.Triggerable),  // used in Policies, Buildings
     OneTimeAmountFreeUnits("[amount] free [baseUnitFilter] units appear", UniqueTarget.Triggerable), // used in Buildings
     OneTimeFreeUnitRuins("Free [baseUnitFilter] found in the ruins", UniqueTarget.Ruins), // Differs from "Free [] appears" in that it spawns near the ruins instead of in a city
@@ -686,8 +686,8 @@ enum class UniqueType(val text: String, vararg targets: UniqueTarget, val flags:
     HiddenAfterGreatProphet("Hidden after generating a Great Prophet", UniqueTarget.Ruins),
     HiddenWithoutVictoryType("Hidden when [victoryType] Victory is disabled", UniqueTarget.Building, UniqueTarget.Unit, flags = UniqueFlag.setOfHiddenToUsers),
     HiddenFromCivilopedia("Will not be displayed in Civilopedia", *UniqueTarget.values(), flags = UniqueFlag.setOfHiddenToUsers),
-    
-    // endregion    
+
+    // endregion
 
     // region DEPRECATED AND REMOVED
 

core/src/com/unciv/ui/pickerscreens/ImprovementPickerScreen.kt

@@ -16,7 +16,11 @@ import com.unciv.ui.utils.*
 import com.unciv.ui.utils.UncivTooltip.Companion.addTooltip
 import kotlin.math.roundToInt
 
-class ImprovementPickerScreen(val tileInfo: TileInfo, unit: MapUnit, val onAccept: ()->Unit) : PickerScreen() {
+class ImprovementPickerScreen(
+    private val tileInfo: TileInfo,
+    private val unit: MapUnit,
+    private val onAccept: ()->Unit
+) : PickerScreen() {
     private var selectedImprovement: TileImprovement? = null
     private val gameInfo = tileInfo.tileMap.gameInfo
     private val ruleSet = gameInfo.ruleSet
@@ -32,8 +36,8 @@ class ImprovementPickerScreen(val tileInfo: TileInfo, unit: MapUnit, val onAccep
             // no onAccept() - Worker can stay selected
         } else {
             if (improvement.name != tileInfo.improvementInProgress)
-                tileInfo.startWorkingOnImprovement(improvement, currentPlayerCiv)
-            if (tileInfo.civilianUnit != null) tileInfo.civilianUnit!!.action = null // this is to "wake up" the worker if it's sleeping
+                tileInfo.startWorkingOnImprovement(improvement, currentPlayerCiv, unit)
+            unit.action = null // this is to "wake up" the worker if it's sleeping
             onAccept()
         }
         game.setWorldScreen()
@@ -51,26 +55,23 @@ class ImprovementPickerScreen(val tileInfo: TileInfo, unit: MapUnit, val onAccep
 
         val regularImprovements = Table()
         regularImprovements.defaults().pad(5f)
-        
+
         // clone tileInfo without "top" feature if it could be removed
         // Keep this copy around for speed
-        val tileInfoNoLast:TileInfo = tileInfo.clone()
-        if (ruleSet.tileImprovements.any { it.key == Constants.remove + tileInfoNoLast.getLastTerrain().name }) {
+        val tileInfoNoLast: TileInfo = tileInfo.clone()
+        if (Constants.remove + tileInfoNoLast.getLastTerrain().name in ruleSet.tileImprovements) {
             tileInfoNoLast.removeTerrainFeature(tileInfoNoLast.getLastTerrain().name)
         }
 
         for (improvement in ruleSet.tileImprovements.values) {
-            var suggestRemoval:Boolean = false
+            var suggestRemoval = false
             // canBuildImprovement() would allow e.g. great improvements thus we need to exclude them - except cancel
             if (improvement.turnsToBuild == 0 && improvement.name != Constants.cancelImprovementOrder) continue
             if (improvement.name == tileInfo.improvement) continue // also checked by canImprovementBeBuiltHere, but after more expensive tests
             if (!tileInfo.canBuildImprovement(improvement, currentPlayerCiv)) {
                 // if there is an improvement that could remove that terrain
-                if (tileInfoNoLast.canBuildImprovement(improvement, currentPlayerCiv)) {
-                    suggestRemoval = true
-                } else {
-                    continue
-                }
+                if (!tileInfoNoLast.canBuildImprovement(improvement, currentPlayerCiv)) continue
+                suggestRemoval = true
             }
             if (!unit.canBuildImprovement(improvement)) continue
 
@@ -94,7 +95,7 @@ class ImprovementPickerScreen(val tileInfo: TileInfo, unit: MapUnit, val onAccep
 
             var labelText = improvement.name.tr()
             val turnsToBuild = if (tileInfo.improvementInProgress == improvement.name) tileInfo.turnsToImprovement
-            else improvement.getTurnsToBuild(currentPlayerCiv)
+                else improvement.getTurnsToBuild(currentPlayerCiv, unit)
             if (turnsToBuild > 0) labelText += " - $turnsToBuild${Fonts.turn}"
             val provideResource = tileInfo.hasViewableResource(currentPlayerCiv) && tileInfo.tileResource.improvement == improvement.name
             if (provideResource) labelText += "\n" + "Provides [${tileInfo.resource}]".tr()
@@ -104,12 +105,11 @@ class ImprovementPickerScreen(val tileInfo: TileInfo, unit: MapUnit, val onAccep
                     && improvement.name != Constants.cancelImprovementOrder)
             if (tileInfo.improvement != null && removeImprovement) labelText += "\n" + "Replaces [${tileInfo.improvement}]".tr()
 
-            val pickNow = if (suggestRemoval)
-                (Constants.remove + "[" + tileInfo.getLastTerrain().name + "] first").toLabel()
-            else if (tileInfo.improvementInProgress != improvement.name)
-                "Pick now!".toLabel().onClick { accept(improvement) }
-            else
-                "Current construction".toLabel()
+            val pickNow = when {
+                suggestRemoval -> "${Constants.remove}[${tileInfo.getLastTerrain().name}] first".toLabel()
+                tileInfo.improvementInProgress != improvement.name -> "Pick now!".toLabel().onClick { accept(improvement) }
+                else -> "Current construction".toLabel()
+            }
 
             val statIcons = getStatIconsTable(provideResource, removeImprovement)
 

core/src/com/unciv/ui/worldscreen/unit/UnitActions.kt

@@ -635,8 +635,14 @@ object UnitActions {
                 title = "Create [$improvementName]",
                 action = {
                     val unitTile = unit.getTile()
-                    for (terrainFeature in tile.terrainFeatures.filter { unitTile.ruleset.tileImprovements.containsKey("Remove $it") })
-                        unitTile.removeTerrainFeature(terrainFeature)// remove forest/jungle/marsh
+                    unitTile.setTerrainFeatures(
+                        // Remove terrainFeatures that a Worker can remove
+                        // and that aren't explicitly allowed under the improvement
+                        unitTile.terrainFeatures.filter {
+                            "Remove $it" !in unitTile.ruleset.tileImprovements ||
+                            it in improvement.terrainsCanBeBuiltOn
+                        }
+                    ) 
                     unitTile.improvement = improvementName
                     unitTile.improvementInProgress = null
                     unitTile.turnsToImprovement = 0
@@ -647,7 +653,8 @@ object UnitActions {
                         city.cityStats.update()
                         city.civInfo.updateDetailedCivResources()
                     }
-                    addStatsPerGreatPersonUsage(unit)
+                    if (unit.isGreatPerson())
+                        addStatsPerGreatPersonUsage(unit)
                     unit.destroy()
                 }.takeIf {
                     resourcesAvailable
@@ -703,7 +710,7 @@ object UnitActions {
             otherCiv.addNotification("[${unit.civInfo}] has stolen your territory!", unit.currentTile.position, unit.civInfo.civName, NotificationIcon.War)
     }
 
-    fun addStatsPerGreatPersonUsage(unit: MapUnit) {
+    private fun addStatsPerGreatPersonUsage(unit: MapUnit) {
         if (!unit.isGreatPerson()) return
 
         val civInfo = unit.civInfo
@@ -782,7 +789,7 @@ object UnitActions {
         if (getGiftAction != null) actionList += getGiftAction
     }
 
-    fun getGiftAction(unit: MapUnit, tile: TileInfo): UnitAction? {
+    private fun getGiftAction(unit: MapUnit, tile: TileInfo): UnitAction? {
         val recipient = tile.getOwner()
         // We need to be in another civs territory.
         if (recipient == null || recipient.isCurrentPlayer()) return null
@@ -824,7 +831,7 @@ object UnitActions {
         return UnitAction(UnitActionType.GiftUnit, action = giftAction)
     }
     
-    fun addTriggerUniqueActions(unit: MapUnit, actionList: ArrayList<UnitAction>){
+    private fun addTriggerUniqueActions(unit: MapUnit, actionList: ArrayList<UnitAction>){
         for (unique in unit.getUniques()) {
             if (!unique.conditionals.any { it.type == UniqueType.ConditionalConsumeUnit }) continue
             val unitAction = UnitAction(type = UnitActionType.TriggerUnique, unique.text){