[Maps] Add water level support to Flood

In addition to the existing "Shallow" water level two water levels are
added:
- Deep: Only ships can reach other islands
- Rising: The water level changes from Shallow to Deep to a level where
the home islands are flooded.

Accepted By: @real_tabasco_sauce
Comments By: @marder, @vladislavbelov
Differential Revision: https://code.wildfiregames.com/D5139
This was SVN commit r27992.

binaries/data/mods/public/gui/gamesetup/Pages/GameSetupPage/GameSettings/GameSettingsLayout.js

@@ -14,6 +14,7 @@ var g_GameSettingsLayout = [
 			"TeamPlacement",
 			"Landscape",
 			"Biome",
+			"WaterLevel",
 			"SeaLevelRiseTime",
 			"Daytime",
 			"TriggerDifficulty",

binaries/data/mods/public/maps/random/flood.js

@@ -48,7 +48,8 @@ const pForest1 = [tForestFloor2 + TERRAIN_SEPARATOR + oTree1, tForestFloor2 + TE
 const pForest2 = [tForestFloor1 + TERRAIN_SEPARATOR + oTree4, tForestFloor1 + TERRAIN_SEPARATOR + oTree5, tForestFloor1];
 
 const heightSeaGround = -2;
-const heightLand = 2;
+const heightLand = 6;
+const heightStartingIslands = 2;
 const shoreRadius = 6;
 
 var g_Map = new RandomMap(heightSeaGround, tWater);
@@ -75,7 +76,7 @@ for (let i = 0; i < numPlayers; ++i)
 		new ClumpPlacer(diskArea(1.4 * defaultPlayerBaseRadius()), 0.8, 0.1, Infinity, playerPosition[i]),
 		[
 			new LayeredPainter([tShore, tMainTerrain], [shoreRadius]),
-			new SmoothElevationPainter(ELEVATION_SET, heightLand, shoreRadius),
+			new SmoothElevationPainter(ELEVATION_SET, heightStartingIslands, shoreRadius),
 			new TileClassPainter(clHill)
 		]);
 
@@ -223,7 +224,7 @@ for (let size of [scaleByMapSize(3, 6), scaleByMapSize(5, 10), scaleByMapSize(8,
 		numb * scaleByMapSize(15, 45));
 
 g_Map.log("Painting shorelines");
-paintTerrainBasedOnHeight(1, heightLand, 0, tMainTerrain);
+paintTerrainBasedOnHeight(1, heightStartingIslands, 0, tMainTerrain);
 paintTerrainBasedOnHeight(heightSeaGround, 1, 3, tTier1Terrain);
 
 g_Map.log("Creating grass patches");

binaries/data/mods/public/maps/random/flood.json

@@ -2,7 +2,7 @@
 	"settings" : {
 		"Name" : "Flood",
 		"Script" : "flood.js",
-		"Description" : "A great flood has moved across the valley enabling ships and troops to battle in chest deep waters.",
+		"Description" : "[color=\"red\"]IMPORTANT NOTE: AI PLAYERS DON'T WORK WITH RISING WATER[/color]\n\nA great flood moves across the valley. At some point you have to evacuate your units and use ships to reach the mainland and the other players.",
 		"SupportedBiomes": [
 			"generic/temperate",
 			"generic/arctic",
@@ -12,8 +12,26 @@
 			"generic/india",
 			"generic/autumn"
 		],
-		"Keywords": [],
+		"TriggerScripts": [
+			"random/flood_triggers.js"
+		],
+		"Keywords": ["trigger"],
 		"Preview" : "flood.png",
-		"CircularMap" : true
+		"CircularMap" : true,
+		"WaterLevels":[
+			{
+				"Name": "Rising",
+				"Description": "The water rises. The homeislands will become uninhabitable.",
+				"Default": true
+			},
+			{
+				"Name": "Shallow",
+				"Description": "The water doesn't rise. Ships and troops can battle in chest deep waters."
+			},
+			{
+				"Name": "Deep",
+				"Description": "The water doesn't rise. You have to use ships to travel to the mainland."
+			}
+		]
 	}
 }