up

launcher.sh

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+#!/bin/bash
+
+# Check if minicraft.jar exists
+if [ -f "minicraft.jar" ]; then
+    echo "minicraft.jar found."
+else
+    echo "minicraft.jar not found. Downloading the latest version..."
+
+    # Fetch the latest release information from GitHub
+    latest_release=$(curl -s https://api.github.com/repos/MinicraftPlus/minicraft-plus-online/releases/latest | grep "browser_download_url.*minicraft_plus-.*\.jar" | cut -d '"' -f 4)
+
+    # Download the latest version of minicraft_plus.jar
+    wget -O minicraft.jar $latest_release
+
+    echo "Download complete."
+fi
+
+# Run minicraft.jar
+java -jar minicraft.jar

main.cpp

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+#include <iostream>
+#include <fstream>
+#include <string>
+#include <sstream>
+#include <cstdlib>
+
+// Function to check if a file exists
+bool FileExists(const std::string& filename) {
+    std::ifstream file(filename);
+    return file.good();
+}
+
+// Function to download and install Java 8
+void InstallJava() {
+    std::cout << "Java 8 or higher is not installed. Downloading Java 8..." << std::endl;
+    std::string command = "curl -L -o java_installer.exe https://javadl.oracle.com/webapps/download/AutoDL?BundleId=251654_7ed26d28139143f38c58992680c214a5 && start java_installer.exe";
+    std::system(command.c_str());
+    std::cout << "Please install Java and restart the program." << std::endl;
+    exit(1);
+}
+
+// Function to get the latest release URL from GitHub
+std::string GetLatestReleaseUrl() {
+    std::string command = "curl -s https://api.github.com/repos/MinicraftPlus/minicraft-plus-online/releases/latest";
+    std::string response;
+    char buffer[128];
+    FILE* pipe = popen(command.c_str(), "r");
+    if (!pipe) {
+        std::cerr << "Failed to run curl command." << std::endl;
+        return "";
+    }
+    while (fgets(buffer, sizeof(buffer), pipe) != nullptr) {
+        response += buffer;
+    }
+    pclose(pipe);
+    
+    std::istringstream stream(response);
+    std::string line;
+    while (std::getline(stream, line)) {
+        if (line.find("browser_download_url") != std::string::npos && line.find(".jar") != std::string::npos) {
+            size_t start = line.find("https://");
+            size_t end = line.find_last_of('"');
+            if (start != std::string::npos && end != std::string::npos) {
+                return line.substr(start, end - start);
+            }
+        }
+    }
+    return "";
+}
+
+// Function to download a file using curl command
+bool DownloadFile(const std::string& url, const std::string& filename) {
+    std::string command = "curl -L -o " + filename + " " + url;
+    int result = std::system(command.c_str());
+    return result == 0;
+}
+
+int main() {
+    const std::string jarFilename = "minicraft.jar";
+
+    if (FileExists(jarFilename)) {
+        std::cout << jarFilename << " found." << std::endl;
+    } else {
+        std::cout << jarFilename << " not found. Downloading the latest version..." << std::endl;
+        std::string latestReleaseUrl = GetLatestReleaseUrl();
+
+        if (latestReleaseUrl.empty()) {
+            std::cerr << "Failed to get the latest release URL." << std::endl;
+            return 1;
+        }
+
+        if (DownloadFile(latestReleaseUrl, jarFilename)) {
+            std::cout << "Download complete." << std::endl;
+        } else {
+            std::cerr << "Failed to download the file." << std::endl;
+            return 1;
+        }
+    }
+
+    // Run minicraft.jar
+    std::cout << "Running minicraft.jar..." << std::endl;
+    int result = std::system(("java -jar " + jarFilename).c_str());
+
+    if (result != 0) {
+        std::cerr << "Java is not installed or failed to run minicraft.jar. Installing Java..." << std::endl;
+        InstallJava();
+        return 1;
+    }
+
+    return 0;
+}