Implement user control loading from controls.txt

Added user control loading functionality from a configuration file.

Minecraft.Client/Windows64/KeyboardMouseInput.cpp

@@ -4,6 +4,39 @@
 
 #include "KeyboardMouseInput.h"
 #include <cmath>
+#include <fstream>
+#include <string>
+#include <map>
+#include <cctype>
+
+// Default keyboard and mouse bindings
+#define INPUT_BINDING_TABLE \
+	X(KEY_FORWARD, 'W') \
+	X(KEY_BACKWARD, 'S') \
+	X(KEY_LEFT, 'A') \
+	X(KEY_RIGHT, 'D') \
+	X(KEY_JUMP, VK_SPACE) \
+	X(KEY_SNEAK, VK_LSHIFT) \
+	X(KEY_SPRINT, VK_CONTROL) \
+	X(KEY_INVENTORY, 'E') \
+	X(KEY_DROP, 'Q') \
+	X(KEY_CRAFTING, 'C') \
+	X(KEY_CRAFTING_ALT, 'R') \
+	X(KEY_CHAT, 'T') \
+	X(KEY_CONFIRM, VK_RETURN) \
+	X(KEY_CANCEL, VK_ESCAPE) \
+	X(KEY_PAUSE, VK_ESCAPE) \
+	X(KEY_TOGGLE_HUD, VK_F1) \
+	X(KEY_DEBUG_INFO, VK_F3) \
+	X(KEY_DEBUG_MENU, VK_F4) \
+	X(KEY_THIRD_PERSON, VK_F5) \
+	X(KEY_DEBUG_CONSOLE, VK_F6) \
+	X(KEY_HOST_SETTINGS, VK_TAB) \
+	X(KEY_SCREENSHOT, VK_F2)
+
+#define X(name, default_val) int KeyboardMouseInput::name = default_val;
+    INPUT_BINDING_TABLE
+#undef X
 
 KeyboardMouseInput g_KBMInput;
 
@@ -27,6 +60,46 @@ static bool IsModifierKeyDown(const bool* keyState, int vkCode)
 	}
 }
 
+static void LoadUserControls()
+{
+	std::map<std::string, int*> controlMap;
+	
+	#define X(name, default_val) controlMap[#name] = &KeyboardMouseInput::name;
+		INPUT_BINDING_TABLE
+	#undef X
+
+	std::ifstream controlsFile("controls.txt");
+	if (controlsFile.is_open())
+	{
+		std::string line;
+		while (std::getline(controlsFile, line))
+		{
+			if (!line.empty() && line.back() == '\r') line.pop_back();
+			if (line.length() < 1) continue;
+
+			size_t sep = line.find('=');
+			if (sep != std::string::npos && line.length() > sep + 1)
+			{
+				std::string keyName = line.substr(0, sep);
+				std::string valueStr = line.substr(sep + 1);
+
+				if (controlMap.count(keyName))
+				{
+					if (isdigit(valueStr[0]))
+					{
+						*controlMap[keyName] = std::stoi(valueStr);
+					}
+					else
+					{
+						*controlMap[keyName] = (int)valueStr[0];
+					}
+				}
+			}
+		}
+		controlsFile.close();
+	}
+}
+
 void KeyboardMouseInput::Init()
 {
 	memset(m_keyDown, 0, sizeof(m_keyDown));