Implement cheat system and enhance game mechanics

- Updated `DataLoader.cs` to throw exceptions for missing location data and added `Experience` and `Gold` properties to the `Enemy` class with random gold rewards.
- Revamped `GameEngine.cs` to introduce a comprehensive cheat system, including activation, processing, and effects on combat.
- Modified `GameModels.cs` to include new properties for `Experience` and `Gold` in the `Enemy` class and added a `Key` property to the `Location` class.
- Enhanced overall game structure with features like no-clip mode and improved enemy spawning and combat mechanics.

Author: ewdlop

src/Data/DataLoader.cs

@@ -1,7 +1,3 @@
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Linq;
 using System.Text.Json;
 
 namespace WinFormsApp1
@@ -87,14 +83,15 @@ public Dictionary<string, Location> LoadLocations()
                 var locationData = JsonSerializer.Deserialize<LocationData>(locationsJson);
 
                 if (locationData?.Locations == null)
-                    return new Dictionary<string, Location>();
+                    throw new Exception("No location data found");
 
                 var locations = new Dictionary<string, Location>();
 
                 foreach (var locationInfo in locationData.Locations)
                 {
                     var location = new Location
                     {
+                        Key = locationInfo.Id,
                         Name = locationInfo.Name,
                         Description = locationInfo.Description,
                         Exits = locationInfo.Exits.ToDictionary(
@@ -145,6 +142,13 @@ public Dictionary<string, Location> LoadLocations()
                 enemyInfo.Defense
             );
 
+            // Set experience and gold from JSON data
+            enemy.Experience = enemyInfo.ExperienceReward;
+            
+            // Calculate gold reward (use random value between min and max)
+            var random = new Random();
+            enemy.Gold = random.Next(enemyInfo.GoldReward.Min, enemyInfo.GoldReward.Max + 1);
+
             // Add loot table
             foreach (var lootItem in enemyInfo.LootTable)
             {