Index: binaries/data/mods/public/simulation/ai/common-api/shared.js
===================================================================
--- binaries/data/mods/public/simulation/ai/common-api/shared.js
+++ binaries/data/mods/public/simulation/ai/common-api/shared.js
@@ -115,18 +115,6 @@
 	this.accessibility = new m.Accessibility();
 	this.accessibility.init(state, this.terrainAnalyzer);
 
-	// Resource types: ignore = not used for resource maps
-	//                 abundant = abundant resource with small amount each
-	//                 sparse = sparse resource, but huge amount each
-	// The following maps are defined in TerrainAnalysis.js and are used for some building placement (cc, dropsites)
-	// They are updated by checking for create and destroy events for all resources
-	this.normalizationFactor = { "abundant": 50, "sparse": 90 };
-	this.influenceRadius = { "abundant": 36, "sparse": 48 };
-	this.ccInfluenceRadius = { "abundant": 60, "sparse": 120 };
-	this.resourceMaps = {};   // Contains maps showing the density of resources
-	this.ccResourceMaps = {}; // Contains maps showing the density of resources, optimized for CC placement.
-	this.createResourceMaps();
-
 	this.gameState = {};
 	for (let player of this._players)
 	{
@@ -389,13 +377,22 @@
 		descendant.prototype[p] = parent.prototype[p];
 };
 
-/** creates a map of resource density */
-m.SharedScript.prototype.createResourceMaps = function()
+/**
+ * Creates a map of resource density, updated by checking for create and destroy events for all resources.
+ */
+m.SharedScript.prototype.createResourceMaps = function(parameters)
 {
+	this.normalizationFactor = parameters.normalisationFactor;
+	this.influenceRadius = parameters.influenceRadius;
+	this.ccInfluenceRadius = parameters.ccInfluenceRadius;
+
+	this.resourceMaps = {};   // Contains maps showing the density of resources
+	this.ccResourceMaps = {}; // Contains maps showing the density of resources, optimized for CC placement.
+
 	for (const resource of Resources.GetCodes())
 	{
 		if (this.resourceMaps[resource] ||
-			!(Resources.GetResource(resource).aiAnalysisInfluenceGroup in this.normalizationFactor))
+			!this.normalizationFactor[resource])
 			continue;
 		// We're creating them 8-bit. Things could go above 255 if there are really tons of resources
 		// But at that point the precision is not really important anyway. And it saves memory.
@@ -452,11 +449,10 @@
 	const cellSize = this.resourceMaps[resource].cellSize;
 	const x = Math.floor(entPos[0] / cellSize);
 	const y = Math.floor(entPos[1] / cellSize);
-	const grp = Resources.GetResource(resource).aiAnalysisInfluenceGroup;
-	const strength = multiplication * ent.resourceSupplyMax() / this.normalizationFactor[grp];
-	this.resourceMaps[resource].addInfluence(x, y, this.influenceRadius[grp] / cellSize, strength / 2, "constant");
-	this.resourceMaps[resource].addInfluence(x, y, this.influenceRadius[grp] / cellSize, strength / 2);
-	this.ccResourceMaps[resource].addInfluence(x, y, this.ccInfluenceRadius[grp] / cellSize, strength, "constant");
+	const strength = multiplication * ent.resourceSupplyMax() / this.normalizationFactor[resource];
+	this.resourceMaps[resource].addInfluence(x, y, this.influenceRadius[resource] / cellSize, strength / 2, "constant");
+	this.resourceMaps[resource].addInfluence(x, y, this.influenceRadius[resource] / cellSize, strength / 2);
+	this.ccResourceMaps[resource].addInfluence(x, y, this.ccInfluenceRadius[resource] / cellSize, strength, "constant");
 };
 
 return m;
Index: binaries/data/mods/public/simulation/ai/petra/config.js
===================================================================
--- binaries/data/mods/public/simulation/ai/petra/config.js
+++ binaries/data/mods/public/simulation/ai/petra/config.js
@@ -159,6 +159,28 @@
 	};
 
 	this.garrisonHealthLevel = { "low": 0.4, "medium": 0.55, "high": 0.7 };
+
+	// The following values are used to make maps defined in TerrainAnalysis.js
+	// and are used for some building placement (cc, dropsites).
+	this.resources = {
+		// A lower value means more a abundant resource with smaller amount each.
+		// A higher value means a more sparse resource with larger amounts each.
+		"normalisationFactor": {
+			"metal": 90,
+			"stone": 90,
+			"wood": 50
+		},
+		"ccInfluenceRadius": {
+			"metal": 120,
+			"stone": 120,
+			"wood": 60
+		},
+		"influenceRadius": {
+			"metal": 48,
+			"stone": 48,
+			"wood": 36
+		}
+	};
 };
 
 PETRA.Config.prototype.setConfig = function(gameState)
Index: binaries/data/mods/public/simulation/ai/petra/headquarters.js
===================================================================
--- binaries/data/mods/public/simulation/ai/petra/headquarters.js
+++ binaries/data/mods/public/simulation/ai/petra/headquarters.js
@@ -65,6 +65,8 @@
 	this.navalMap = false;
 	this.navalRegions = {};
 
+	gameState.sharedScript.createResourceMaps(this.Config.resources);
+
 	this.treasures = gameState.getEntities().filter(ent => ent.isTreasure());
 	this.treasures.registerUpdates();
 	this.currentPhase = gameState.currentPhase();
Index: binaries/data/mods/public/simulation/data/resources/food.json
===================================================================
--- binaries/data/mods/public/simulation/data/resources/food.json
+++ binaries/data/mods/public/simulation/data/resources/food.json
@@ -10,6 +10,5 @@
 		"meat": "Meat"
 	},
 	"properties": ["barterable", "tradable", "tributable"],
-	"truePrice": 100,
-	"aiAnalysisInfluenceGroup": "ignore"
+	"truePrice": 100
 }
Index: binaries/data/mods/public/simulation/data/resources/metal.json
===================================================================
--- binaries/data/mods/public/simulation/data/resources/metal.json
+++ binaries/data/mods/public/simulation/data/resources/metal.json
@@ -8,6 +8,5 @@
 		"ruins": "Ruins"
 	},
 	"properties": ["barterable", "tradable", "tributable"],
-	"truePrice": 100,
-	"aiAnalysisInfluenceGroup": "sparse"
+	"truePrice": 100
 }
Index: binaries/data/mods/public/simulation/data/resources/stone.json
===================================================================
--- binaries/data/mods/public/simulation/data/resources/stone.json
+++ binaries/data/mods/public/simulation/data/resources/stone.json
@@ -8,6 +8,5 @@
 		"ruins": "Ruins"
 	},
 	"properties": ["barterable", "tradable", "tributable"],
-	"truePrice": 100,
-	"aiAnalysisInfluenceGroup": "sparse"
+	"truePrice": 100
 }
Index: binaries/data/mods/public/simulation/data/resources/wood.json
===================================================================
--- binaries/data/mods/public/simulation/data/resources/wood.json
+++ binaries/data/mods/public/simulation/data/resources/wood.json
@@ -8,6 +8,5 @@
 		"ruins": "Ruins"
 	},
 	"properties": ["barterable", "tradable", "tributable"],
-	"truePrice": 100,
-	"aiAnalysisInfluenceGroup": "abundant"
+	"truePrice": 100
 }