Add configurable keyboard rebinding via controls.txt

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));
@@ -64,6 +137,8 @@ void KeyboardMouseInput::Init()
 	rid.dwFlags = 0;
 	rid.hwndTarget = g_hWnd;
 	RegisterRawInputDevices(&rid, 1, sizeof(rid));
+
+	LoadUserControls();
 }
 
 void KeyboardMouseInput::ClearAllState()

Minecraft.Client/Windows64/KeyboardMouseInput.h

@@ -14,29 +14,29 @@ class KeyboardMouseInput
 	static const int MOUSE_MIDDLE = 2;
 	static const int MAX_MOUSE_BUTTONS = 3;
 
-	static const int KEY_FORWARD = 'W';
-	static const int KEY_BACKWARD = 'S';
-	static const int KEY_LEFT = 'A';
-	static const int KEY_RIGHT = 'D';
-	static const int KEY_JUMP = VK_SPACE;
-	static const int KEY_SNEAK = VK_LSHIFT;
-	static const int KEY_SPRINT = VK_CONTROL;
-	static const int KEY_INVENTORY = 'E';
-	static const int KEY_DROP = 'Q';
-	static const int KEY_CRAFTING = 'C';
-	static const int KEY_CRAFTING_ALT = 'R';
-	static const int KEY_CHAT = 'T';
-	static const int KEY_CONFIRM = VK_RETURN;
-	static const int KEY_CANCEL = VK_ESCAPE;
-	static const int KEY_PAUSE = VK_ESCAPE;
-	static const int KEY_TOGGLE_HUD = VK_F1;
-	static const int KEY_DEBUG_INFO = VK_F3;
-	static const int KEY_DEBUG_MENU = VK_F4;
-	static const int KEY_THIRD_PERSON = VK_F5;
-	static const int KEY_DEBUG_CONSOLE = VK_F6;
-	static const int KEY_HOST_SETTINGS = VK_TAB;
+	static int KEY_FORWARD;
+	static int KEY_BACKWARD;
+	static int KEY_LEFT;
+	static int KEY_RIGHT;
+	static int KEY_JUMP;
+	static int KEY_SNEAK;
+	static int KEY_SPRINT;
+	static int KEY_INVENTORY;
+	static int KEY_DROP;
+	static int KEY_CRAFTING;
+	static int KEY_CRAFTING_ALT;
+	static int KEY_CHAT;
+	static int KEY_CONFIRM;
+	static int KEY_CANCEL;
+	static int KEY_PAUSE;
+	static int KEY_TOGGLE_HUD;
+	static int KEY_DEBUG_INFO;
+	static int KEY_DEBUG_MENU;
+	static int KEY_THIRD_PERSON;
+	static int KEY_DEBUG_CONSOLE;
+	static int KEY_HOST_SETTINGS;
 	static const int KEY_FULLSCREEN = VK_F11;
-	static const int KEY_SCREENSHOT = VK_F2;
+	static int KEY_SCREENSHOT;
 
 	void Init();
 	void Tick();