Added Infantry, Machine Gun units

Added Railroad, Ballistics techs
Added Statue of Liberty wonder

Credits.md

@@ -191,6 +191,7 @@ All the following are from [the Noun Project](https://thenounproject.com) licenc
 * [Stadium](https://thenounproject.com/term/stadium/13872/) By Karuna Lalvani
 * [Signal Tower](https://thenounproject.com/term/signal-tower/1547758/) By Nociconist for Broadcast Tower
 * [Eiffel Tower](https://thenounproject.com/term/eiffel-tower/1907757/) By Felipe Alvarado
+* [Statue of Liberty](https://thenounproject.com/search/?q=statue%20of%20liberty&i=1801199) By 1516
 * [Christ the redeemer](https://thenounproject.com/term/christ-the-redeemer/56112/) By Stefan Spieler for Cristo Redentor
 
 ### Information Era
@@ -348,6 +349,7 @@ All the following are from [the Noun Project](https://thenounproject.com) licenc
 * [Plastic](https://thenounproject.com/term/plastic/478826/) By Yu luck
 * [Microphone](https://thenounproject.com/term/microphone/470266/) By Viktor Vorobyev for Mass Media
 * [Flight](https://thenounproject.com/term/flight/1014306/) By Genius Icons
+* [Train](https://thenounproject.com/term/train/651644/) By  Federico Panzano for Railroad
 * [Refridgerator](https://thenounproject.com/search/?q=refridgerator&i=1188873) By b farias, CL
 
 ### Information

android/assets/jsons/Buildings.json

@@ -536,6 +536,13 @@
 		uniques:["Provides 1 happiness per social policy"],
 		requiredTech:"Radio"
 	},
+	{
+		name:"Statue of Liberty",
+		culture:1,
+		isWonder:true,
+		uniques:["+1 Production from specialists"],
+		requiredTech:"Replacable Parts"
+	},
 	{
 		name:"Research Lab",
 		science:4,		

android/assets/jsons/Techs.json

@@ -377,6 +377,11 @@
 				row:6,
 				prerequisites:["Steam Power"]
 			}
+			{
+				name:"Railroad",
+				row:8,
+				prerequisites:["Steam Power","Dynamite"]
+			}
 		]	
 	},
 	{
@@ -396,10 +401,15 @@
 				row:5,
 				prerequisites:["Replacable Parts", "Flight"],
 			},
+			{
+				name:"Ballistics",
+				row:6,
+				prerequisites:["Flight"],
+			},
 			{
 				name:"Combustion",
 				row:8,
-				prerequisites:["Steam Power","Dynamite"]
+				prerequisites:["Railroad"]
 			}
 		]	
 	},
@@ -420,11 +430,6 @@
 				prerequisites:["Electronics"],
 				uniques:["+10% science and production in all cities"]
 			},
-			{
-				name:"Nuclear Fission",
-				row:7,
-				prerequisites:["Combustion"]
-			}
 		]	
 	},
 	{
@@ -447,7 +452,12 @@
 			{
 				name:"Rocketry",
 				row:6,
-				prerequisites:["Flight","Computers"]
+				prerequisites:["Ballistics","Computers"]
+			},
+			{
+				name:"Nuclear Fission",
+				row:7,
+				prerequisites:["Combustion"]
 			}
 		]
 	},

android/assets/jsons/TileImprovements.json

@@ -88,7 +88,7 @@
 	{
 		name:"Railroad",
 		turnsToBuild:4,
-		techRequired:"Combustion"
+		techRequired:"Railroad"
 	},
 	
 	// Removals

android/assets/jsons/Units.json

@@ -542,8 +542,33 @@
 		cost: 320,
 		requiredTech:"Replacable Parts",
 		hurryCostModifier:20,
+		upgradesTo:"Infantry",
+		obsoleteTech:"Plastics"
 		attackSound:"shot"
 	},
+	{
+		name:"Infantry",
+		unitType:"Melee",
+		movement:2,
+		strength:70,
+		cost: 375,
+		requiredTech:"Plastics",
+		hurryCostModifier:20,
+		attackSound:"shot"
+	},
+	{
+		name:"Machine Gun",
+		unitType:"Ranged",
+		range:1,
+		movement:2,
+		strength:60,
+		rangedStrength:60,
+		cost: 350,
+		requiredTech:"Ballistics",
+		hurryCostModifier:20,
+		attackSound:"machinegun"
+	},
+	
 	
 	/* Great people */
 	

android/build.gradle

@@ -21,7 +21,7 @@ android {
         applicationId "com.unciv.app"
         minSdkVersion 14
         targetSdkVersion 28
-        versionCode 190
+        versionCode 191
         versionName "2.12.0"
     }
 

core/src/com/unciv/GameStarter.kt

@@ -35,6 +35,7 @@ class GameStarter{
         val availableCivNames = Stack<String>()
         availableCivNames.addAll(GameBasics.Nations.keys.shuffled())
         availableCivNames.removeAll(newGameParameters.humanNations)
+        availableCivNames.remove("Barbarians")
 
         for(nation in newGameParameters.humanNations) {
             val playerCiv = CivilizationInfo(nation)

core/src/com/unciv/logic/city/CityStats.kt

@@ -185,6 +185,8 @@ class CityStats {
 
         if (policies.contains("Commerce Complete")) stats.gold += 1
         if (policies.contains("Secularism")) stats.science += 2
+        if(cityInfo.getBuildingUniques().contains("+1 Production from specialists"))
+            stats.production += 1
         return stats
     }
 

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

@@ -109,7 +109,7 @@ class MapUnit {
                 && civInfo.getBuildingUniques().contains("All military naval units receive +1 movement and +1 sight"))
             visibilityRange += 1
         val tile = getTile()
-        if (tile.baseTerrain == "Hill") visibilityRange += 1
+        if (tile.baseTerrain == "Hill" && type.isLandUnit()) visibilityRange += 1
         return tile.getViewableTiles(visibilityRange)
     }