===================================================================
--- original.js
+++ change.js
@@ -283,9 +283,9 @@
 		// Iterate through all buildings owned by the player
 		self.buildings.forEach(function (building) {
 			// Sum the energy provided by the building
 			var buildingInfo = buildableRepository.getBuildableInfo(building.type);
-			self.energy += buildingInfo.energy;
+			self.energy = Math.min(Math.max(self.energy + buildingInfo.energy, 0), 100);
 		});
 		console.log("Player " + self.playerId + " energy updated: " + self.energy);
 	};
 	return self;
@@ -440,8 +440,9 @@
 // Gui
 var commandPanel = null;
 var player1SpiceText = null;
 var player1EnergyText = null;
+var energyOffsetSufix = '%              ';
 var currentSelectionText = null;
 var rockIlot1Center = {
 	x: 0,
 	y: 0
@@ -635,27 +636,27 @@
 	player1SpiceText.setText('| ' + player1.spice.toString());
 	// Animate the change of the energy value
 	if (previousEnergyLevel !== player1.energy) {
 		var energyDifference = player1.energy - previousEnergyLevel;
-		var duration = 1000; // Duration of the animation in milliseconds
+		var duration = 2000; // Duration of the animation in milliseconds
 		var steps = duration / (1000 / 60); // Number of steps based on 60FPS
 		var stepValue = energyDifference / steps;
 		var currentStep = 0;
 		var animateEnergyChange = function animateEnergyChange() {
 			if (currentStep < steps) {
 				previousEnergyLevel += stepValue;
-				player1EnergyText.setText(previousEnergyLevel.toFixed(0).toString() + '%              ');
+				player1EnergyText.setText(previousEnergyLevel.toFixed(0).toString() + energyOffsetSufix);
 				currentStep++;
 				LK.setTimeout(animateEnergyChange, 1000 / 60);
 			} else {
 				// Ensure the final value is set correctly
-				player1EnergyText.setText(player1.energy.toString() + '%              ');
+				player1EnergyText.setText(player1.energy.toString() + energyOffsetSufix);
 				previousEnergyLevel = player1.energy; // Update the previous energy level
 			}
 		};
 		animateEnergyChange();
 	} else {
-		player1EnergyText.setText(player1.energy.toString() + '%              ');
+		player1EnergyText.setText(player1.energy.toString() + energyOffsetSufix);
 	}
 };
 function initGame() {
 	// Create players