Rudimentary difficulty setting

gui/campaigns/grand_strategy/game/GameData.js

@@ -11,6 +11,8 @@ class GameData
 		this.provinces = {};
 		this.tribes = {};
 
+		this.difficulty = "medium";
+
 		this.playerTribe = undefined;
 		this.playerHero = undefined;
 
@@ -45,6 +47,7 @@ class GameData
 			"turn": this.turn,
 			"playerTribe": this.playerTribe,
 			"playerHero": this.playerHero.Serialize(),
+			"difficulty": this.difficulty,
 			"tribes": tribes,
 			"provinces": pv,
 			"events": pastEvents
@@ -71,6 +74,9 @@ class GameData
 		this.playerHero = new Hero();
 		this.playerHero.Deserialize(data.playerHero);
 
+		if (data.difficulty)
+			this.difficulty = data.difficulty;
+
 		this.pastTurnEvents = [];
 		for (const evs of data.events)
 		{
@@ -87,10 +93,10 @@ class GameData
 			this.turnEvents = this.pastTurnEvents[this.pastTurnEvents.length - 1];
 	}
 
-	static createNewGame(playerData)
+	static createNewGame(playerData, difficulty)
 	{
 		g_GameData = new GameData();
-		g_GameData.initialiseGame(playerData);
+		g_GameData.initialiseGame(playerData, difficulty);
 		return g_GameData;
 	}
 
@@ -118,7 +124,7 @@ class GameData
 		CampaignRun.getCurrentRun().save();
 	}
 
-	initialiseGame(playerData)
+	initialiseGame(playerData, difficulty)
 	{
 		this.parseHistory();
 
@@ -144,6 +150,8 @@ class GameData
 					this.provinces[prov].setOwner(code);
 		}
 
+		this.difficulty = difficulty;
+
 		this.save();
 	}
 
@@ -228,7 +236,7 @@ class GameData
 		let aiID = 1 - playerID;
 		gameSettings.playerAI.set(aiID, {
 			"bot": "petra",
-			"difficulty": playerIsAttacker ? province.garrison / 2 : 5 - province.garrison / 2,
+			"difficulty": this.getAIDifficulty(province.garrison, playerIsAttacker),
 			"behavior": "random",
 		});
 		gameSettings.playerCiv.setValue(0, this.tribes[attackerTribe].civ);
@@ -253,6 +261,13 @@ class GameData
 		});
 	}
 
+	getAIDifficulty(garrison, playerIsAttacker)
+	{
+		const max = this.difficulty === "easy" ? 2 : this.difficulty == "medium" ? 4 : 5;
+		const min = this.difficulty === "easy" ? 0 : this.difficulty == "medium" ? 2 : 3;
+		return Math.max(min, Math.min(max, playerIsAttacker ? min + garrison : max - garrison));
+	}
+
 	changeGarrison(provinceCode, delta)
 	{
 		this.provinces[provinceCode].garrison = Math.max(0, Math.min(10,
@@ -301,11 +316,16 @@ class GameData
 				let tribe = this.tribes[code];
 				let targets = new Set();
 				for (let prov of tribe.controlledProvinces)
-					for (let pot of g_GameData.provinces[prov].getLinks())
+				{
+					const pv = g_GameData.provinces[prov];
+					if (pv.garrison < 2)
+						pv.garrison++;
+					for (let pot of pv.getLinks())
 					{
-						if (g_GameData.provinces[pot].ownerTribe !== code)
+						if (pv.ownerTribe !== code)
 							targets.add(pot);
 					}
+				}
 
 				if (randBool(0.5) && targets.size)
 				{

gui/campaigns/grand_strategy/init/InitPage.js

@@ -15,7 +15,7 @@ class InitPage
 		desc += "\nWelcome to 0 A.D.'s Grand Strategy campaign, where you will take control of a country through the eyes of a Hero character. Fortify your lands, conquer your neighbors, and lead your civilization to victory.";
 		Engine.GetGUIObjectByName("campaignDescription").caption = desc;
 
-		Engine.GetGUIObjectByName("campaignImage").sprite = "color:0 0 0";
+		Engine.GetGUIObjectByName("campaignImage").sprite = "stretched:campaigns/grand_strategy/art/banner.png";
 
 		Engine.GetGUIObjectByName("playerSettings").caption = "Customize your civilization";
 
@@ -47,6 +47,13 @@ class InitPage
 		this.difficultySelect.list = ["Easy", "Medium", "Hard"];
 		this.difficultySelect.list_data = ["easy", "medium", "hard"];
 		this.difficultySelect.selected = 0;
+		this.difficultySelect.onHoverChange = () => {
+			this.difficultySelect.tooltip = [
+				"AI players will range from Sandbox to Easy difficulty",
+				"AI players will range from Easy to Hard difficulty",
+				"AI players will range from Medium to Very Hard difficulty",
+			]?.[this.difficultySelect.hovered] ?? "";
+		};
 
 		this.customHeroName = false;
 		this.customTribeName = false;
@@ -141,10 +148,11 @@ class InitPage
 				"width": 450,
 				"height": 200,
 				"title": "Start Campaign?",
-				"message": sprintf("You have chosen to start a campaign as the %(tribe)s of the %(civ)s.\nConfirm?",
+				"message": sprintf("You have chosen to start a campaign as a %(civ)s tribe called the “%(tribe)s”, in %(prov)s.\nConfirm?",
 					{
 						"tribe": this.tribeName.caption,
 						"civ": this.civSelect.list[this.civSelect.selected],
+						"prov": this.provinceSelect.list[this.provinceSelect.selected],
 					}),
 				"buttonCaptions": ["No", "Yes"],
 			},
@@ -155,10 +163,12 @@ class InitPage
 	{
 		// Writes g_GameData
 		GameData.createNewGame({
-			"civ": this.civSelect.list_data[this.civSelect.selected],
-			"tribeName": this.tribeName.caption,
-			"startProvince": this.provinceSelect.list_data[this.provinceSelect.selected],
-		});
+				"civ": this.civSelect.list_data[this.civSelect.selected],
+				"tribeName": this.tribeName.caption,
+				"startProvince": this.provinceSelect.list_data[this.provinceSelect.selected],
+			},
+			this.difficultySelect.list_data[this.difficultySelect.selected]
+		);
 		Engine.SwitchGuiPage("campaigns/grand_strategy/page.xml", {
 			"filename": CampaignRun.getCurrentRunFilename()
 		});