Bug Fixes and new config

- Particles now face camera
- Sk1er Modcore integration
- New config gui using Vigilance
- Invert pitch option

18 files changed, 750 insertions, 154 deletions

diff --git a/.github/perspectivemod.png b/.github/perspectivemod.png
index 13cb20e..4f1c8a9 100644
--- a/.github/perspectivemod.png
+++ b/.github/perspectivemod.png
diff --git a/README.md b/README.md
index 8c07a63..5cbf643 100644
--- a/README.md
+++ b/README.md
@@ -7,8 +7,11 @@ A remake of [Perspective Mod v3 by canelex](https://github.com/Canelex/Perspecti
 Features:
 - Mouse button support
 - Nametags face camera
+- Config GUI
 - Mod can be enabled/disabled
 - Hold and toggle modes
+- Invert pitch/Y axis mode
+- Sk1er ModCore Integration
 
 Mod can be enabled and disabled, and the mode can be changed with the `/perspectivemod` or `/pmod` commands.
 
diff --git a/build.gradle b/build.gradle
index 492b0ca..c5b0b3d 100644
--- a/build.gradle
+++ b/build.gradle
@@ -5,7 +5,8 @@ buildscript {
             name = "forge"
             url = "https://files.minecraftforge.net/maven"
         }
-        maven { url = "https://repo.spongepowered.org/maven" }
+
+        flatDir dirs: 'libs'
     }
     dependencies {
         classpath "net.minecraftforge.gradle:ForgeGradle:2.1-SNAPSHOT"
@@ -33,6 +34,10 @@ minecraft {
     clientJvmArgs += "-Dfml.coreMods.load=me.djtheredstoner.perspectivemod.forge.PerspectiveModTweaker"
 }
 
+dependencies {
+    provided files("libs/modcore.jar")
+}
+
 jar {
     duplicatesStrategy = DuplicatesStrategy.EXCLUDE
 
@@ -62,4 +67,6 @@ processResources
     from(sourceSets.main.resources.srcDirs) {
         exclude 'mcmod.info'
     }
+
+    from(file("LICENSE"))
 }
diff --git a/gradle.properties b/gradle.properties
index f484552..0068e23 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -3,4 +3,4 @@ org.gradle.jvmargs=-Xmx2G
 # These are in here and not in build.gradle so that github actions can read them
 modid = djperspectivemod
 archivesBaseName = PerspectiveModv4
-version = 4.1
\ No newline at end of file
+version = 4.2
\ No newline at end of file
diff --git a/gradlew b/gradlew
index cccdd3d..cccdd3d 100755..100644
--- a/gradlew
+++ b/gradlew
diff --git a/libs/modcore.jar b/libs/modcore.jar
new file mode 100644
index 0000000..c1e7436
--- /dev/null
+++ b/libs/modcore.jar
diff --git a/src/main/java/me/djtheredstoner/perspectivemod/ModCoreInstaller.java b/src/main/java/me/djtheredstoner/perspectivemod/ModCoreInstaller.java
new file mode 100644
index 0000000..cda3837
--- /dev/null
+++ b/src/main/java/me/djtheredstoner/perspectivemod/ModCoreInstaller.java
@@ -0,0 +1,506 @@
+package me.djtheredstoner.perspectivemod;
+
+import com.google.gson.JsonArray;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+import com.google.gson.JsonParser;
+import net.minecraft.launchwrapper.Launch;
+import net.minecraft.launchwrapper.LaunchClassLoader;
+import org.apache.commons.io.FileUtils;
+import org.apache.commons.io.IOUtils;
+
+import javax.swing.GroupLayout;
+import javax.swing.JFrame;
+import javax.swing.JLabel;
+import javax.swing.JProgressBar;
+import javax.swing.LayoutStyle;
+import javax.swing.SwingConstants;
+import javax.swing.UIManager;
+import java.awt.Font;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.lang.reflect.Field;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.net.HttpURLConnection;
+import java.net.URL;
+import java.nio.charset.Charset;
+import java.util.ArrayList;
+import java.util.LinkedHashSet;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
+/*
+    Created by Sk1er for use in all mods. Install under exact package name each time.
+ */
+public class ModCoreInstaller {
+
+
+    private static final String VERSION_URL = "https://api.sk1er.club/modcore_versions";
+    private static final String className = "club.sk1er.mods.core.ModCore";
+    private static boolean errored = false;
+    private static String error;
+    private static File dataDir = null;
+    private static boolean isRunningModCore = false;
+
+    public static boolean isIsRunningModCore() {
+        return isRunningModCore;
+    }
+
+    private static boolean isInitalized() {
+        try {
+            LinkedHashSet<String> objects = new LinkedHashSet<>();
+            objects.add(className);
+            Launch.classLoader.clearNegativeEntries(objects);
+            Field invalidClasses = LaunchClassLoader.class.getDeclaredField("invalidClasses");
+            invalidClasses.setAccessible(true);
+            Object obj = invalidClasses.get(ModCoreInstaller.class.getClassLoader());
+            ((Set<String>) obj).remove(className);
+            return Class.forName("club.sk1er.mods.core.ModCore") != null;
+        } catch (ClassNotFoundException | NoSuchFieldException | IllegalAccessException ignored) {
+            ignored.printStackTrace();
+        }
+        return false;
+    }
+
+    public static boolean isErrored() {
+        return errored;
+    }
+
+    public static String getError() {
+        return error;
+    }
+
+    private static void bail(String error) {
+        errored = true;
+        ModCoreInstaller.error = error;
+    }
+
+    private static JsonHolder readFile(File in) {
+        try {
+            return new JsonHolder(FileUtils.readFileToString(in));
+        } catch (IOException ignored) {
+
+        }
+        return new JsonHolder();
+    }
+
+    public static void initializeModCore(File gameDir) {
+        if (!isIsRunningModCore()) {
+            return;
+        }
+        try {
+            Class<?> modCore = Class.forName(className);
+            Method instanceMethod = modCore.getMethod("getInstance");
+            Method initialize = modCore.getMethod("initialize", File.class);
+            Object modCoreObject = instanceMethod.invoke(null);
+            initialize.invoke(modCoreObject, gameDir);
+            System.out.println("Loaded ModCore Successfully");
+            return;
+        } catch (ClassNotFoundException | NoSuchMethodException | IllegalAccessException | InvocationTargetException e) {
+            e.printStackTrace();
+        }
+        System.out.println("Did NOT ModCore Successfully");
+    }
+
+    public static int initialize(File gameDir, String minecraftVersion) {
+        if (isInitalized()) return -1;
+        dataDir = new File(gameDir, "modcore");
+        if (!dataDir.exists()) {
+            if (!dataDir.mkdirs()) {
+                bail("Unable to create necessary files");
+                return 1;
+            }
+        }
+        JsonHolder jsonHolder = fetchJSON(VERSION_URL);
+        String latestRemote = jsonHolder.optString(minecraftVersion);
+        boolean failed = jsonHolder.getKeys().size() == 0 || (jsonHolder.has("success") && !jsonHolder.optBoolean("success"));
+
+        File metadataFile = new File(dataDir, "metadata.json");
+        JsonHolder localMetadata = readFile(metadataFile);
+        if (failed) latestRemote = localMetadata.optString(minecraftVersion);
+        File modcoreFile = new File(dataDir, "Sk1er Modcore-" + latestRemote + " (" + minecraftVersion + ").jar");
+
+        if (!modcoreFile.exists() || !localMetadata.optString(minecraftVersion).equalsIgnoreCase(latestRemote) && !failed) {
+            //File does not exist, or is out of date, download it
+            File old = new File(dataDir, "Sk1er Modcore-" + localMetadata.optString(minecraftVersion) + " (" + minecraftVersion + ").jar");
+            if (old.exists()) old.delete();
+
+            if (!download("https://static.sk1er.club/repo/mods/modcore/" + latestRemote + "/" + minecraftVersion + "/ModCore-" + latestRemote + " (" + minecraftVersion + ").jar", latestRemote, modcoreFile, minecraftVersion, localMetadata)) {
+                bail("Unable to download");
+                return 2;
+            }
+
+        }
+
+        addToClasspath(modcoreFile);
+
+        if (!isInitalized()) {
+            bail("Something went wrong and it did not add the jar to the class path. Local file exists? " + modcoreFile.exists());
+            return 3;
+        }
+        isRunningModCore = true;
+        return 0;
+    }
+
+
+    public static void addToClasspath(File file) {
+        try {
+            URL url = file.toURI().toURL();
+
+            ClassLoader classLoader = ModCoreInstaller.class.getClassLoader();
+            Method method = classLoader.getClass().getDeclaredMethod("addURL", URL.class);
+            method.setAccessible(true);
+            method.invoke(classLoader, url);
+        } catch (Exception e) {
+            throw new RuntimeException("Unexpected exception", e);
+        }
+    }
+
+    private static boolean download(String url, String version, File file, String mcver, JsonHolder versionData) {
+        url = url.replace(" ", "%20");
+        System.out.println("Downloading ModCore " + " version " + version + " from: " + url);
+
+        try {
+            UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+
+        JFrame frame = new JFrame("ModCore Initializer");
+        JProgressBar bar = new JProgressBar();
+        JLabel label = new JLabel("Downloading ModCore " + version, SwingConstants.CENTER);
+        label.setSize(600, 120);
+        frame.getContentPane().add(label);
+        frame.getContentPane().add(bar);
+        GroupLayout layout = new GroupLayout(frame.getContentPane());
+        frame.getContentPane().setLayout(layout);
+        layout.setHorizontalGroup(layout.createParallelGroup(GroupLayout.Alignment.LEADING)
+                .addGroup(layout.createSequentialGroup()
+                        .addContainerGap()
+                        .addGroup(layout.createParallelGroup(GroupLayout.Alignment.LEADING)
+                                .addComponent(label, GroupLayout.Alignment.TRAILING, GroupLayout.DEFAULT_SIZE, 376, Short.MAX_VALUE)
+                                .addComponent(bar, GroupLayout.Alignment.TRAILING, GroupLayout.DEFAULT_SIZE, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
+                        .addContainerGap()));
+        layout.setVerticalGroup(layout.createParallelGroup(GroupLayout.Alignment.LEADING)
+                .addGroup(layout.createSequentialGroup()
+                        .addContainerGap()
+                        .addComponent(label, GroupLayout.PREFERRED_SIZE, 55, GroupLayout.PREFERRED_SIZE)
+                        .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED)
+                        .addComponent(bar, GroupLayout.PREFERRED_SIZE, 33, GroupLayout.PREFERRED_SIZE)
+                        .addContainerGap(GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)));
+        frame.setResizable(false);
+        bar.setBorderPainted(true);
+        bar.setMinimum(0);
+        bar.setStringPainted(true);
+        Font font = bar.getFont();
+        bar.setFont(new Font(font.getName(), font.getStyle(), font.getSize() * 2));
+        label.setFont(new Font(font.getName(), font.getStyle(), font.getSize() * 2));
+        frame.pack();
+        frame.setLocationRelativeTo(null);
+        frame.setVisible(true);
+
+        HttpURLConnection connection = null;
+        InputStream is = null;
+        try (FileOutputStream outputStream = new FileOutputStream(file)) {
+            URL u = new URL(url);
+            connection = (HttpURLConnection) u.openConnection();
+            connection.setRequestMethod("GET");
+            connection.setUseCaches(true);
+            connection.addRequestProperty("User-Agent", "Mozilla/4.76 (Sk1er Modcore Initializer)");
+            connection.setReadTimeout(15000);
+            connection.setConnectTimeout(15000);
+            connection.setDoOutput(true);
+            is = connection.getInputStream();
+            int contentLength = connection.getContentLength();
+            byte[] buffer = new byte[1024];
+            System.out.println("MAX: " + contentLength);
+            bar.setMaximum(contentLength);
+            int read;
+            bar.setValue(0);
+            while ((read = is.read(buffer)) > 0) {
+                outputStream.write(buffer, 0, read);
+                bar.setValue(bar.getValue() + 1024);
+            }
+            FileUtils.write(new File(dataDir, "metadata.json"), versionData.put(mcver, version).toString());
+        } catch (Exception e) {
+            e.printStackTrace();
+            frame.dispose();
+            return false;
+        } finally {
+            try {
+                if (connection != null) {
+                    connection.disconnect();
+                }
+
+                if (is != null) {
+                    is.close();
+                }
+            } catch (Exception e) {
+                System.out.println("Failed cleaning up ModCoreInstaller#download");
+                e.printStackTrace();
+            }
+        }
+
+        frame.dispose();
+        return true;
+    }
+
+    public static JsonHolder fetchJSON(String url) {
+        return new JsonHolder(fetchString(url));
+    }
+
+    public static String fetchString(String url) {
+        url = url.replace(" ", "%20");
+        System.out.println("Fetching " + url);
+
+        HttpURLConnection connection = null;
+        InputStream is = null;
+        try {
+            URL u = new URL(url);
+            connection = (HttpURLConnection) u.openConnection();
+            connection.setRequestMethod("GET");
+            connection.setUseCaches(true);
+            connection.addRequestProperty("User-Agent", "Mozilla/4.76 (Sk1er ModCore)");
+            connection.setReadTimeout(15000);
+            connection.setConnectTimeout(15000);
+            connection.setDoOutput(true);
+            is = connection.getInputStream();
+            return IOUtils.toString(is, Charset.defaultCharset());
+        } catch (Exception e) {
+            e.printStackTrace();
+        } finally {
+            try {
+                if (connection != null) {
+                    connection.disconnect();
+                }
+
+                if (is != null) {
+                    is.close();
+                }
+            } catch (Exception e) {
+                System.out.println("Failed cleaning up ModCoreInstaller#fetchString");
+                e.printStackTrace();
+            }
+        }
+
+        return "Failed to fetch";
+    }
+
+
+    //Added because we need to use before ModCore is loaded
+    static class JsonHolder {
+        private JsonObject object;
+
+        public JsonHolder(JsonObject object) {
+            this.object = object;
+        }
+
+        public JsonHolder(String raw) {
+            if (raw == null)
+                object = new JsonObject();
+            else
+                try {
+                    this.object = new JsonParser().parse(raw).getAsJsonObject();
+                } catch (Exception e) {
+                    this.object = new JsonObject();
+                    e.printStackTrace();
+                }
+        }
+
+        public JsonHolder() {
+            this(new JsonObject());
+        }
+
+        @Override
+        public String toString() {
+            if (object != null)
+                return object.toString();
+            return "{}";
+        }
+
+        public JsonHolder put(String key, boolean value) {
+            object.addProperty(key, value);
+            return this;
+        }
+
+        public void mergeNotOverride(JsonHolder merge) {
+            merge(merge, false);
+        }
+
+        public void mergeOverride(JsonHolder merge) {
+            merge(merge, true);
+        }
+
+        public void merge(JsonHolder merge, boolean override) {
+            JsonObject object = merge.getObject();
+            for (String s : merge.getKeys()) {
+                if (override || !this.has(s))
+                    put(s, object.get(s));
+            }
+        }
+
+        private void put(String s, JsonElement element) {
+            this.object.add(s, element);
+        }
+
+        public JsonHolder put(String key, String value) {
+            object.addProperty(key, value);
+            return this;
+        }
+
+        public JsonHolder put(String key, int value) {
+            object.addProperty(key, value);
+            return this;
+        }
+
+        public JsonHolder put(String key, double value) {
+            object.addProperty(key, value);
+            return this;
+        }
+
+        public JsonHolder put(String key, long value) {
+            object.addProperty(key, value);
+            return this;
+        }
+
+        private JsonHolder defaultOptJSONObject(String key, JsonObject fallBack) {
+            try {
+                return new JsonHolder(object.get(key).getAsJsonObject());
+            } catch (Exception e) {
+                return new JsonHolder(fallBack);
+            }
+        }
+
+        public JsonArray defaultOptJSONArray(String key, JsonArray fallback) {
+            try {
+                return object.get(key).getAsJsonArray();
+            } catch (Exception e) {
+                return fallback;
+            }
+        }
+
+        public JsonArray optJSONArray(String key) {
+            return defaultOptJSONArray(key, new JsonArray());
+        }
+
+
+        public boolean has(String key) {
+            return object.has(key);
+        }
+
+        public long optLong(String key, long fallback) {
+            try {
+                return object.get(key).getAsLong();
+            } catch (Exception e) {
+                return fallback;
+            }
+        }
+
+        public long optLong(String key) {
+            return optLong(key, 0);
+        }
+
+        public boolean optBoolean(String key, boolean fallback) {
+            try {
+                return object.get(key).getAsBoolean();
+            } catch (Exception e) {
+                return fallback;
+            }
+        }
+
+        public boolean optBoolean(String key) {
+            return optBoolean(key, false);
+        }
+
+        public JsonObject optActualJSONObject(String key) {
+            try {
+                return object.get(key).getAsJsonObject();
+            } catch (Exception e) {
+                return new JsonObject();
+            }
+        }
+
+        public JsonHolder optJSONObject(String key) {
+            return defaultOptJSONObject(key, new JsonObject());
+        }
+
+
+        public int optInt(String key, int fallBack) {
+            try {
+                return object.get(key).getAsInt();
+            } catch (Exception e) {
+                return fallBack;
+            }
+        }
+
+        public int optInt(String key) {
+            return optInt(key, 0);
+        }
+
+
+        public String defaultOptString(String key, String fallBack) {
+            try {
+                return object.get(key).getAsString();
+            } catch (Exception e) {
+                return fallBack;
+            }
+        }
+
+        public String optString(String key) {
+            return defaultOptString(key, "");
+        }
+
+
+        public double optDouble(String key, double fallBack) {
+            try {
+                return object.get(key).getAsDouble();
+            } catch (Exception e) {
+                return fallBack;
+            }
+        }
+
+        public List<String> getKeys() {
+            List<String> tmp = new ArrayList<>();
+            for (Map.Entry<String, JsonElement> e : object.entrySet()) {
+                tmp.add(e.getKey());
+            }
+            return tmp;
+        }
+
+        public double optDouble(String key) {
+            return optDouble(key, 0.0);
+        }
+
+
+        public JsonObject getObject() {
+            return object;
+        }
+
+        public boolean isNull(String key) {
+            return object.has(key) && object.get(key).isJsonNull();
+        }
+
+        public JsonHolder put(String values, JsonHolder values1) {
+            return put(values, values1.getObject());
+        }
+
+        public JsonHolder put(String values, JsonObject object) {
+            this.object.add(values, object);
+            return this;
+        }
+
+        public void put(String blacklisted, JsonArray jsonElements) {
+            this.object.add(blacklisted, jsonElements);
+        }
+
+        public void remove(String header) {
+            object.remove(header);
+        }
+    }
+
+
+}
\ No newline at end of file
diff --git a/src/main/java/me/djtheredstoner/perspectivemod/PerspectiveMod.java b/src/main/java/me/djtheredstoner/perspectivemod/PerspectiveMod.java
index 75a0a5e..0133ff1 100644
--- a/src/main/java/me/djtheredstoner/perspectivemod/PerspectiveMod.java
+++ b/src/main/java/me/djtheredstoner/perspectivemod/PerspectiveMod.java
@@ -1,7 +1,6 @@
 package me.djtheredstoner.perspectivemod;
 
-import com.google.gson.Gson;
-import com.google.gson.GsonBuilder;
+import me.djtheredstoner.perspectivemod.commands.PerspectiveModCommand;
 import me.djtheredstoner.perspectivemod.config.PerspectiveModConfig;
 import net.minecraft.client.Minecraft;
 import net.minecraft.client.settings.KeyBinding;
@@ -12,23 +11,18 @@ import net.minecraftforge.event.world.WorldEvent;
 import net.minecraftforge.fml.client.registry.ClientRegistry;
 import net.minecraftforge.fml.common.Mod;
 import net.minecraftforge.fml.common.event.FMLInitializationEvent;
-import net.minecraftforge.fml.common.event.FMLPreInitializationEvent;
 import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
 import net.minecraftforge.fml.common.gameevent.InputEvent;
-import org.apache.commons.io.FileUtils;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 import org.lwjgl.input.Keyboard;
 import org.lwjgl.input.Mouse;
 import org.lwjgl.opengl.Display;
 
-import java.io.File;
-
-@Mod(modid = "djperspectivemod", name = "Perspective Mod v4", version = "4.1", acceptedMinecraftVersions = "[1.8.9]", clientSideOnly = true)
+@Mod(modid = "djperspectivemod", name = "Perspective Mod v4", version = "4.2", acceptedMinecraftVersions = "[1.8.9]", clientSideOnly = true)
 public class PerspectiveMod {
 
     private static final Minecraft mc = Minecraft.getMinecraft();
-    private static final Gson gson = new GsonBuilder().setPrettyPrinting().create();
     private static final KeyBinding perspectiveKey = new KeyBinding("Perspective", Keyboard.KEY_LMENU, "Perspective Mod");
     private static final Logger logger = LogManager.getLogger("Perspective Mod v4");
 
@@ -40,14 +34,12 @@ public class PerspectiveMod {
     private static int previousPerspective = 0;
 
     @Mod.EventHandler
-    public void preInit(FMLPreInitializationEvent event) {
-        File configFile = new File(event.getModConfigurationDirectory(), "perspectivemodv4.json");
-        loadConfig(configFile);
-        Runtime.getRuntime().addShutdownHook(new Thread(() -> saveConfig(configFile)));
-    }
-
-    @Mod.EventHandler
     public void init(FMLInitializationEvent event) {
+        ModCoreInstaller.initializeModCore(Minecraft.getMinecraft().mcDataDir);
+
+        config = new PerspectiveModConfig();
+        config.preload();
+
         ClientRegistry.registerKeyBinding(perspectiveKey);
         ClientCommandHandler.instance.registerCommand(new PerspectiveModCommand());
         MinecraftForge.EVENT_BUS.register(this);
@@ -117,6 +109,10 @@ public class PerspectiveMod {
             float f3 = (float) mc.mouseHelper.deltaX * f2;
             float f4 = (float) mc.mouseHelper.deltaY * f2;
 
+            if(config.invertPitch) {
+                f4 = -f4;
+            }
+
             cameraYaw += f3 * 0.15F;
             cameraPitch += f4 * 0.15F;
 
@@ -131,28 +127,4 @@ public class PerspectiveMod {
         perspectiveToggled = false;
         mc.gameSettings.thirdPersonView = previousPerspective;
     }
-
-    public static void loadConfig(File configFile) {
-        if (configFile.exists()) {
-            try {
-                String json = FileUtils.readFileToString(configFile);
-                config = gson.fromJson(json, PerspectiveModConfig.class);
-            } catch (Exception e) {
-                logger.error("Error Loading Config, try deleting the file.");
-                e.printStackTrace();
-            }
-        } else {
-            config = new PerspectiveModConfig();
-            saveConfig(configFile);
-        }
-    }
-
-    public static void saveConfig(File configFile) {
-        try {
-            String json = gson.toJson(config);
-            FileUtils.write(configFile, json);
-        } catch (Exception e) {
-            e.printStackTrace();
-        }
-    }
 }
diff --git a/src/main/java/me/djtheredstoner/perspectivemod/PerspectiveModCommand.java b/src/main/java/me/djtheredstoner/perspectivemod/PerspectiveModCommand.java
deleted file mode 100644
index 3eae96a..0000000
--- a/src/main/java/me/djtheredstoner/perspectivemod/PerspectiveModCommand.java
+++ /dev/null
@@ -1,86 +0,0 @@
-package me.djtheredstoner.perspectivemod;
-
-import net.minecraft.command.CommandBase;
-import net.minecraft.command.CommandException;
-import net.minecraft.command.ICommandSender;
-import net.minecraft.util.ChatComponentText;
-
-import java.util.Collections;
-import java.util.List;
-
-public class PerspectiveModCommand extends CommandBase {
-
-    private final String PREFIX = "§c[§6Perspective Mod§c] §r";
-
-    @Override
-    public String getCommandName() {
-        return "perspectivemod";
-    }
-
-    @Override
-    public List<String> getCommandAliases() {
-        return Collections.singletonList("pmod");
-    }
-
-    @Override
-    public String getCommandUsage(ICommandSender sender) {
-        return "§6Perspective Mod Help\n" +
-            "§b/pmod <enable|disable> §7- Enables or disables the mod.\n" +
-            "§b/pmod mode <hold|toggle> §7- Changes the mode.\n" +
-            "§7Edit the keybind in the minecraft controls menu.";
-    }
-
-    @Override
-    public void processCommand(ICommandSender sender, String[] args) throws CommandException {
-        if (args.length > 0 && args.length < 3) {
-            String arg = args[0];
-            if (arg.equalsIgnoreCase("enable")) {
-                PerspectiveMod.config.modEnabled = true;
-
-                sendMessage(sender, "§bMod §aEnabled§b.");
-            } else if (arg.equalsIgnoreCase("disable")) {
-                PerspectiveMod.config.modEnabled = false;
-
-                sendMessage(sender, "§bMod §cDisabled§b.");
-            } else if (arg.equalsIgnoreCase("mode")) {
-                if (args.length == 2) {
-                    String mode = args[1];
-                    if (mode.equalsIgnoreCase("hold")) {
-                        PerspectiveMod.config.holdMode = true;
-
-                        sendMessage(sender, "§bMode set to hold.");
-                    } else if (mode.equalsIgnoreCase("toggle")) {
-                        PerspectiveMod.config.holdMode = false;
-
-                        sendMessage(sender, "§bMode set to toggle.");
-                    } else {
-                        sendMessage(sender, "§cInvalid mode. Valid mode are hold and toggle.");
-                    }
-                } else {
-                    sendMessage(sender, "§cYou must specify a mode. Valid Modes are hold and toggle.");
-                }
-            } else {
-                sendHelp(sender);
-            }
-        } else {
-            sendHelp(sender);
-        }
-    }
-
-    @Override
-    public int getRequiredPermissionLevel() {
-        return -1;
-    }
-
-    private void sendHelp(ICommandSender sender) {
-        sendMessage(sender, getCommandUsage(sender), false);
-    }
-
-    private void sendMessage(ICommandSender sender, String message, boolean addPrefix) {
-        sender.addChatMessage(new ChatComponentText((addPrefix ? PREFIX : "") + message));
-    }
-
-    private void sendMessage(ICommandSender sender, String message) {
-        sendMessage(sender, message, true);
-    }
-}
diff --git a/src/main/java/me/djtheredstoner/perspectivemod/asm/ClassTransformer.java b/src/main/java/me/djtheredstoner/perspectivemod/asm/ClassTransformer.java
index 63f693e..c7db68b 100644
--- a/src/main/java/me/djtheredstoner/perspectivemod/asm/ClassTransformer.java
+++ b/src/main/java/me/djtheredstoner/perspectivemod/asm/ClassTransformer.java
@@ -2,6 +2,7 @@ package me.djtheredstoner.perspectivemod.asm;
 
 import com.google.common.collect.ArrayListMultimap;
 import com.google.common.collect.Multimap;
+import me.djtheredstoner.perspectivemod.asm.transformers.ActiveRenderInfoTransformer;
 import me.djtheredstoner.perspectivemod.asm.transformers.EntityRendererTransformer;
 import me.djtheredstoner.perspectivemod.asm.transformers.MinecraftTransformer;
 import me.djtheredstoner.perspectivemod.asm.transformers.RenderManagerTransformer;
@@ -34,6 +35,7 @@ public class ClassTransformer implements IClassTransformer {
         registerTransformer(new EntityRendererTransformer());
         registerTransformer(new RenderManagerTransformer());
         registerTransformer(new MinecraftTransformer());
+        registerTransformer(new ActiveRenderInfoTransformer());
     }
 
     private void registerTransformer(ITransformer transformer) {
diff --git a/src/main/java/me/djtheredstoner/perspectivemod/asm/hooks/ActiveRenderInfoHook.java b/src/main/java/me/djtheredstoner/perspectivemod/asm/hooks/ActiveRenderInfoHook.java
new file mode 100644
index 0000000..e60ede4
--- /dev/null
+++ b/src/main/java/me/djtheredstoner/perspectivemod/asm/hooks/ActiveRenderInfoHook.java
@@ -0,0 +1,16 @@
+package me.djtheredstoner.perspectivemod.asm.hooks;
+
+import me.djtheredstoner.perspectivemod.PerspectiveMod;
+import net.minecraft.entity.player.EntityPlayer;
+
+public class ActiveRenderInfoHook {
+
+    public static float rotationYawHook(EntityPlayer entity) {
+        return PerspectiveMod.perspectiveToggled ? PerspectiveMod.cameraYaw : entity.rotationYaw;
+    }
+
+    public static float rotationPitchHook(EntityPlayer entity) {
+        return PerspectiveMod.perspectiveToggled ? PerspectiveMod.cameraPitch : entity.rotationPitch;
+    }
+
+}
diff --git a/src/main/java/me/djtheredstoner/perspectivemod/asm/hooks/EntityRendererHook.java b/src/main/java/me/djtheredstoner/perspectivemod/asm/hooks/EntityRendererHook.java
index 3ee3c9e..193affb 100644
--- a/src/main/java/me/djtheredstoner/perspectivemod/asm/hooks/EntityRendererHook.java
+++ b/src/main/java/me/djtheredstoner/perspectivemod/asm/hooks/EntityRendererHook.java
@@ -26,4 +26,7 @@ public class EntityRendererHook {
         return PerspectiveMod.overrideMouse();
     }
 
+    public static double distanceHook(double value) {
+        return value;
+    }
 }
diff --git a/src/main/java/me/djtheredstoner/perspectivemod/asm/transformers/ActiveRenderInfoTransformer.java b/src/main/java/me/djtheredstoner/perspectivemod/asm/transformers/ActiveRenderInfoTransformer.java
new file mode 100644
index 0000000..531ec90
--- /dev/null
+++ b/src/main/java/me/djtheredstoner/perspectivemod/asm/transformers/ActiveRenderInfoTransformer.java
@@ -0,0 +1,68 @@
+package me.djtheredstoner.perspectivemod.asm.transformers;
+
+import me.djtheredstoner.perspectivemod.asm.ITransformer;
+import org.objectweb.asm.tree.*;
+
+import java.util.ListIterator;
+
+import static org.objectweb.asm.Opcodes.*;
+
+public class ActiveRenderInfoTransformer implements ITransformer {
+
+    private static final String HOOK_CLASS = "me/djtheredstoner/perspectivemod/asm/hooks/ActiveRenderInfoHook";
+
+    @Override
+    public String[] getClassName() {
+        return new String[]{"net.minecraft.client.renderer.ActiveRenderInfo"};
+    }
+
+    @Override
+    public void transform(ClassNode classNode, String name) {
+        for (MethodNode method : classNode.methods) {
+            String methodName = mapMethodName(classNode, method);
+
+            if (methodName.equals("updateRenderInfo") || methodName.equals("func_74583_a")) {
+                ListIterator<AbstractInsnNode> iterator = method.instructions.iterator();
+
+                while (iterator.hasNext()) {
+                    AbstractInsnNode next = iterator.next();
+
+                    if(next.getOpcode() == GETFIELD) {
+                        FieldInsnNode insn = (FieldInsnNode) next;
+
+                        String ownerName = mapClassName(insn.owner);
+                        String fieldName = mapClassName(insn.name);
+
+                        if(ownerName.equals("net/minecraft/entity/player/EntityPlayer") && insn.desc.equals("F")) {
+                            InsnList insnList = null;
+
+                            switch (fieldName) {
+                                case "rotationPitch":
+                                case "field_70125_A":
+                                    insnList = insertRotationHook("Pitch");
+                                    break;
+                                case "rotationYaw":
+                                case "field_70177_z":
+                                    insnList = insertRotationHook("Yaw");
+                                    break;
+                            }
+
+                            if(insnList != null) {
+                                method.instructions.insertBefore(insn, insnList);
+                                method.instructions.remove(insn);
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    private InsnList insertRotationHook(String field) {
+        InsnList insnList = new InsnList();
+
+        insnList.add(new MethodInsnNode(INVOKESTATIC, HOOK_CLASS, "rotation" + field + "Hook", "(Lnet/minecraft/entity/player/EntityPlayer;)F", false));
+
+        return insnList;
+    }
+}
diff --git a/src/main/java/me/djtheredstoner/perspectivemod/asm/transformers/EntityRendererTransformer.java b/src/main/java/me/djtheredstoner/perspectivemod/asm/transformers/EntityRendererTransformer.java
index dadb1e0..ac47621 100644
--- a/src/main/java/me/djtheredstoner/perspectivemod/asm/transformers/EntityRendererTransformer.java
+++ b/src/main/java/me/djtheredstoner/perspectivemod/asm/transformers/EntityRendererTransformer.java
@@ -3,6 +3,8 @@ package me.djtheredstoner.perspectivemod.asm.transformers;
 import me.djtheredstoner.perspectivemod.asm.ITransformer;
 import org.objectweb.asm.tree.*;
 
+import java.lang.reflect.Field;
+import java.lang.reflect.Method;
 import java.util.Iterator;
 
 import static org.objectweb.asm.Opcodes.*;
@@ -37,7 +39,7 @@ public class EntityRendererTransformer implements ITransformer {
                         String ownerName = mapClassName(insn.owner);
                         String fieldName = mapFieldNameFromNode(insn);
 
-                        if(ownerName.equals("net/minecraft/entity/Entity" )&& insn.desc.equals("F")) {
+                        if(ownerName.equals("net/minecraft/entity/Entity" ) && insn.desc.equals("F")) {
 
                             InsnList insnList = null;
 
@@ -65,9 +67,14 @@ public class EntityRendererTransformer implements ITransformer {
                                 method.instructions.remove(insn);
                             }
                         }
-                    }
-                }
+                    } /*else if (next.getOpcode() == DLOAD) {
+                        VarInsnNode insn = (VarInsnNode) next;
 
+                        if(insn.getPrevious().getOpcode() == FCONST_0 && insn.getNext().getOpcode() == DNEG) {
+                            method.instructions.insert(insn, insertDistanceHook());
+                        }
+                    }*/
+                }
             } else if (methodName.equals("updateCameraAndRender") || methodName.equals("func_181560_a")) {
 
                 Iterator<AbstractInsnNode> iterator = method.instructions.iterator();
@@ -89,10 +96,15 @@ public class EntityRendererTransformer implements ITransformer {
                     }
                 }
             }
+            //Poggers Ultra FPS Praseodymium mode.
+            /* else if (methodName.equals("renderWorldPass") || methodName.equals("func_175068_a")) {
+
+                method.instructions.insert(method.instructions.getFirst(), new InsnNode(RETURN));
+            }*/
         }
     }
 
-    public InsnList insertRotationHook(String field) {
+    private InsnList insertRotationHook(String field) {
         InsnList list = new InsnList();
 
         list.add(new MethodInsnNode(INVOKESTATIC, HOOK_CLASS, field + "Hook", "(Lnet/minecraft/entity/Entity;)F", false));
@@ -100,11 +112,19 @@ public class EntityRendererTransformer implements ITransformer {
         return list;
     }
 
-    public InsnList insertMouseHook() {
+    private InsnList insertMouseHook() {
         InsnList list = new InsnList();
 
         list.add(new MethodInsnNode(INVOKESTATIC, HOOK_CLASS, "mouseHook", "(Lnet/minecraft/client/Minecraft;)Z", false));
 
         return list;
     }
+
+    private InsnList insertDistanceHook() {
+        InsnList list = new InsnList();
+
+        list.add(new MethodInsnNode(INVOKESTATIC, HOOK_CLASS, "distanceHook", "(D)D", false));
+
+        return list;
+    }
 }
diff --git a/src/main/java/me/djtheredstoner/perspectivemod/commands/PerspectiveModCommand.java b/src/main/java/me/djtheredstoner/perspectivemod/commands/PerspectiveModCommand.java
new file mode 100644
index 0000000..68dd051
--- /dev/null
+++ b/src/main/java/me/djtheredstoner/perspectivemod/commands/PerspectiveModCommand.java
@@ -0,0 +1,60 @@
+package me.djtheredstoner.perspectivemod.commands;
+
+import club.sk1er.mods.core.ModCore;
+import me.djtheredstoner.perspectivemod.PerspectiveMod;
+import net.minecraft.client.Minecraft;
+import net.minecraft.command.CommandBase;
+import net.minecraft.command.ICommandSender;
+import net.minecraft.util.ChatComponentText;
+
+import java.util.Collections;
+import java.util.List;
+
+public class PerspectiveModCommand extends CommandBase {
+
+    private final String PREFIX = "§c[§6Perspective Mod§c] §r";
+
+    @Override
+    public String getCommandName() {
+        return "perspectivemod";
+    }
+
+    @Override
+    public List<String> getCommandAliases() {
+        return Collections.singletonList("pmod");
+    }
+
+    @Override
+    public String getCommandUsage(ICommandSender sender) {
+        return "§6Perspective Mod Help\n" +
+            "§b/pmod <enable|disable> §7- Enables or disables the mod.\n" +
+            "§b/pmod mode <hold|toggle> §7- Changes the mode.\n" +
+            "§7Edit the keybind in the minecraft controls menu.";
+    }
+
+    @Override
+    public void processCommand(ICommandSender sender, String[] args) {
+        if (args.length == 1 && args[0].equals("eW91IGZvdW5kIGEgc2VjcmV0IQo=")) {
+            sendMessage("you found a secret!");
+        } else {
+            ModCore.getInstance().getGuiHandler().open(PerspectiveMod.config.gui());
+        }
+    }
+
+    @Override
+    public int getRequiredPermissionLevel() {
+        return -1;
+    }
+
+    private void sendHelp() {
+        sendMessage(getCommandUsage(Minecraft.getMinecraft().thePlayer), false);
+    }
+
+    private void sendMessage(String message, boolean addPrefix) {
+        Minecraft.getMinecraft().thePlayer.addChatMessage(new ChatComponentText((addPrefix ? PREFIX : "") + message));
+    }
+
+    private void sendMessage(String message) {
+        sendMessage(message, true);
+    }
+}
diff --git a/src/main/java/me/djtheredstoner/perspectivemod/config/PerspectiveModConfig.java b/src/main/java/me/djtheredstoner/perspectivemod/config/PerspectiveModConfig.java
index d4b1922..3f15069 100644
--- a/src/main/java/me/djtheredstoner/perspectivemod/config/PerspectiveModConfig.java
+++ b/src/main/java/me/djtheredstoner/perspectivemod/config/PerspectiveModConfig.java
@@ -1,8 +1,42 @@
 package me.djtheredstoner.perspectivemod.config;
 
-public class PerspectiveModConfig {
+import club.sk1er.vigilance.Vigilant;
+import club.sk1er.vigilance.data.Property;
+import club.sk1er.vigilance.data.PropertyType;
 
+import java.io.File;
+
+public class PerspectiveModConfig extends Vigilant {
+
+    @Property(
+        type = PropertyType.SWITCH,
+        name = "Perspective Mod",
+        category = "General",
+        subcategory = "General",
+        description = "Toggle Perspective Mod entirely."
+    )
     public boolean modEnabled = true;
+
+    @Property(
+        type = PropertyType.SWITCH,
+        name = "Hold Mode",
+        category = "General",
+        subcategory = "General",
+        description = "Return to normal perspective after releasing keybind."
+    )
     public boolean holdMode = true;
 
+    @Property(
+        type = PropertyType.SWITCH,
+        name = "Invert Pitch",
+        category = "General",
+        subcategory = "General",
+        description = "Invert the pitch while in perspective (same as blc/lunar)."
+    )
+    public boolean invertPitch = false;
+
+    public PerspectiveModConfig() {
+        super(new File("./config/perspectivemodv4.toml"));
+        initialize();
+    }
 }
diff --git a/src/main/java/me/djtheredstoner/perspectivemod/forge/PerspectiveModTweaker.java b/src/main/java/me/djtheredstoner/perspectivemod/forge/PerspectiveModTweaker.java
index 695f7a2..f5128f0 100644
--- a/src/main/java/me/djtheredstoner/perspectivemod/forge/PerspectiveModTweaker.java
+++ b/src/main/java/me/djtheredstoner/perspectivemod/forge/PerspectiveModTweaker.java
@@ -1,5 +1,6 @@
 package me.djtheredstoner.perspectivemod.forge;
 
+import me.djtheredstoner.perspectivemod.ModCoreInstaller;
 import me.djtheredstoner.perspectivemod.asm.ClassTransformer;
 import net.minecraft.launchwrapper.Launch;
 import net.minecraftforge.common.ForgeVersion;
@@ -52,6 +53,17 @@ public class PerspectiveModTweaker implements IFMLLoadingPlugin {
 
     @Override
     public String[] getASMTransformerClass() {
+        int initialize = ModCoreInstaller.initialize(Launch.minecraftHome, "1.8.9");
+
+        if (ModCoreInstaller.isErrored() || initialize != 0 && initialize != -1) {
+            System.out.println("Failed to load Sk1er Modcore - " + initialize + " - " + ModCoreInstaller.getError());
+        }
+        // If true the classes are loaded
+        if (ModCoreInstaller.isIsRunningModCore()) {
+            // register ModCore's class transformer
+            return new String[]{"club.sk1er.mods.core.forge.ClassTransformer", ClassTransformer.class.getName()};
+        }
+
         return new String[]{ClassTransformer.class.getName()};
     }
 
diff --git a/src/main/resources/LICENSE b/src/main/resources/LICENSE
deleted file mode 100644
index 45ae6c4..0000000
--- a/src/main/resources/LICENSE
+++ /dev/null
@@ -1,21 +0,0 @@
-MIT License
-
-Copyright (c) 2020 DJtheRedstoner
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
\ No newline at end of file