FEAT: Meet the commands

src/commands/Command.hpp

@@ -0,0 +1,25 @@
+#pragma once
+#include <string>
+#include <vector>
+
+enum CommandFlags {
+    COMMAND_FLAG_SINGLEPLAYER_ONLY = (1 << 1),
+    COMMAND_FLAG_NO_ARGS = (1 << 2),
+};
+
+class Minecraft;
+
+class Command {
+public:
+    const std::string& getName() { return m_name; }
+    const CommandFlags getFlags() { return m_flags; }
+
+    virtual void execute(Minecraft& mc, const std::vector<std::string>& args) = 0;
+    virtual void printHelp(Minecraft& mc) = 0;
+
+protected:
+    Command(const std::string& name, CommandFlags flags = (CommandFlags)0) : m_name(name), m_flags(flags) {}
+
+    const std::string m_name;
+    const CommandFlags m_flags;
+};

src/commands/CommandHelp.cpp

@@ -0,0 +1,27 @@
+#include "CommandHelp.hpp"
+#include "commands/Command.hpp"
+#include "CommandManager.hpp"
+#include <client/Minecraft.h>
+
+CommandHelp::CommandHelp() : Command("help") {}
+
+void CommandHelp::execute(Minecraft& mc, const std::vector<std::string>& args) {
+    if (args.empty()) {
+        auto cmds = mc.commandManager().getListAllCommands();
+
+        mc.addMessage("Usage: /help <command>");
+        mc.addMessage("List of all commands:");
+        
+        for (auto& cmd : cmds) {
+            mc.addMessage(" - " + cmd);
+        }
+    } else {
+        Command* cmd = mc.commandManager().getCommand(args[0]);
+
+        if (cmd != nullptr) {
+            cmd->printHelp(mc);
+        }
+    }
+}
+
+void CommandHelp::printHelp(Minecraft& mc) {}

src/commands/CommandHelp.hpp

@@ -0,0 +1,9 @@
+#include "Command.hpp"
+
+class CommandHelp : public Command {
+public:
+    CommandHelp();
+
+    void execute(Minecraft& mc, const std::vector<std::string>& args);
+    void printHelp(Minecraft& mc);
+};

src/commands/CommandKick.cpp

@@ -0,0 +1,37 @@
+#include "CommandKick.hpp"
+#include "commands/Command.hpp"
+#include "network/RakNetInstance.h"
+#include "raknet/RakPeer.h"
+#include "world/level/Level.h"
+#include <algorithm>
+#include <client/Minecraft.h>
+
+
+CommandKick::CommandKick() : Command("kick") {}
+
+void CommandKick::execute(Minecraft& mc, const std::vector<std::string>& args) {
+    if (args.empty()) {
+        return printHelp(mc);
+    }
+
+    auto it = std::find_if(mc.level->players.begin(), mc.level->players.end(), [args] (auto& it) -> bool {
+        return it->name == args[0];
+    });
+
+    if (it == mc.level->players.end()) {
+        return mc.addMessage("kick: can't find player with name " + args[0]);
+    }
+
+    if (*it == (Player*)mc.player) {
+        return mc.addMessage("kick: you can't kick urself lol");
+    }
+
+    mc.level->removePlayer(*it);
+    (*it)->remove();
+    mc.raknetInstance->getPeer()->CloseConnection((*it)->owner, true);
+    mc.addMessage("kick: successfully kicked player " + args[0]);
+}
+
+void CommandKick::printHelp(Minecraft& mc) {
+    mc.addMessage("Usage: /kick <player>");
+}

src/commands/CommandKick.hpp

@@ -0,0 +1,9 @@
+#include "Command.hpp"
+
+class CommandKick : public Command {
+public:
+    CommandKick();
+
+    void execute(Minecraft& mc, const std::vector<std::string>& args);
+    void printHelp(Minecraft& mc);
+};

src/commands/CommandManager.cpp

@@ -0,0 +1,71 @@
+#include "CommandManager.hpp"
+#include <algorithm>
+#include <string>
+#include <vector>
+#include "client/Minecraft.h"
+#include "commands/Command.hpp"
+#include "commands/CommandHelp.hpp"
+#include "commands/CommandKick.hpp"
+#include "network/packet/ChatPacket.h"
+#include "network/RakNetInstance.h"
+#include "world/level/Level.h"
+
+
+
+CommandManager::CommandManager() {
+    registerAllCommands();
+}
+
+void CommandManager::registerAllCommands() {
+    m_commands.push_back(new CommandHelp());
+    m_commands.push_back(new CommandKick());
+}
+
+std::vector<std::string> CommandManager::getListAllCommands() {
+    std::vector<std::string> ret;
+
+    for (auto& cmd : m_commands) {
+        ret.push_back(cmd->getName());
+    }
+
+    return ret;
+}
+
+void CommandManager::execute(Minecraft& mc, const std::string& input) {
+    std::istringstream ss(input);
+    std::string cmd;
+
+    ss >> cmd;
+
+    auto it = std::find_if(m_commands.begin(), m_commands.end(), [cmd](auto& it) -> bool {
+        return it->getName() == cmd;
+    });
+
+    if (it == m_commands.end()) {
+        return mc.addMessage("Command /" + cmd + " not found");
+    }
+
+    std::vector<std::string> args;
+
+    std::string tok;
+    while (ss >> tok) args.push_back(tok);
+    
+    if (!mc.level->isClientSide || (*it)->getFlags() & CommandFlags::COMMAND_FLAG_SINGLEPLAYER_ONLY) {
+        (*it)->execute(mc, args);
+    } else {
+        ChatPacket packet("/" + input);
+        mc.raknetInstance->send(packet);
+    }
+}
+
+Command* CommandManager::getCommand(const std::string& name) {
+    auto it = std::find_if(m_commands.begin(), m_commands.end(), [name](auto& it) -> bool {
+        return it->getName() == name;
+    });
+
+    if (it == m_commands.end()) {
+        return *it;
+    }
+
+    return nullptr;
+}

src/commands/CommandManager.hpp

@@ -0,0 +1,21 @@
+#pragma once
+#include <string>
+#include <vector>
+
+#include "Command.hpp"
+
+class CommandManager {
+public:
+    CommandManager();
+
+    std::vector<std::string> getListAllCommands();
+
+    void execute(Minecraft& mc, const std::string& input);
+
+    Command* getCommand(const std::string& name);
+
+private:
+    void registerAllCommands();
+    
+    std::vector<Command*> m_commands;
+};