single threaded server support, two tutorials and new thread test script

docs/tutorials/index.md

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+## Mod tutorials with ModAPI
+
+Prerequisites:
+ - Basic knowledge of JavaScript
+ - A good code editor (recommended: https://vscode.dev)
+
+### Beginner
+- [Step Hack](step.md)
+- [Spider Hack](spider.md)
+- [VClip Exploit](comingsoon)

docs/tutorials/spider.md

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+## Spider Hack with ModAPI
+A spider hack allows players to climb up any wall like a spider.
+
+Start by creating a new file in your code editor. Save it to a folder on your device, ensuring that the file extension is `.js`.
+
+The spider hack has a lot of similarities to the step hack, so lets copy the step hack and rename the `stepHackUpdateCode` function to `spiderHackUpdateCode`:
+```javascript
+ModAPI.require("player");
+
+function spiderHackUpdateCode() {
+    //We will add code here.
+}
+ModAPI.addEventListener("update", spiderHackUpdateCode);
+```
+
+Most spider hacks work by checking if the player is walking into a wall, and then setting their vertical velocity to a constant amount (usually `0.2`, for parity with ladders).
+Let's start by checking if the player is walking into a wall, by adding an if statement inside the `spiderHackUpdateCode` function:
+```javascript
+if (ModAPI.player.isCollidedHorizontally) {
+
+}
+```
+
+Now, let's set the player's vertical velocity:
+```javascript
+if (ModAPI.player.isCollidedHorizontally) {
+    ModAPI.player.motionY = 0.2; //Feel free to change this value to something bigger, smaller or even negative.
+}
+```
+
+Time to see the final code:
+```javascript
+ModAPI.require("player");
+
+function spiderHackUpdateCode() {
+    if (ModAPI.player.isCollidedHorizontally) {
+        ModAPI.player.motionY = 0.2; //Feel free to change this value to something bigger, smaller or even negative.
+    }
+}
+ModAPI.addEventListener("update", spiderHackUpdateCode);
+```

docs/tutorials/step.md

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+## Step Hack with ModAPI
+A step hack allows a player to walk up full blocks (or more) as if they were slabs.
+
+Start by creating a new file in your code editor. Save it to a folder on your device, ensuring that the file extension is `.js`.
+
+Let's start by requiring the player. This will allow us to change attributes on the player:
+```javascript
+ModAPI.require("player");
+```
+
+Now, we have to detect when the player in a world. This will be done with the `update` event, which runs every tick while the player is in a world. In EaglerForge's ModAPI, to run code on an event, you have to create a function. Then, you register the function to an event.
+```javascript
+ModAPI.require("player");
+
+function stepHackUpdateCode() {
+    //We will add code here.
+}
+ModAPI.addEventListener("update", stepHackUpdateCode);
+```
+
+Inside this method, lets change the player's `stepHeight`, which controls how high they can step. By default this is `0.5`, to alow players to walk up slabs or stairs. I'll change it to `2` for demonstration purposes. You can also try any other number, like `0`, `6`, etc.
+```javascript
+ModAPI.require("player");
+
+function stepHackUpdateCode() {
+    ModAPI.player.stepHeight = 2;
+}
+ModAPI.addEventListener("update", stepHackUpdateCode);
+```
+
+Now, to load this mod, open your EaglerForge build, and in the start screen select `Upload Mod (.js)`. Upload the mod you created, and you should now be able to walk up two block tall pillars, or more depending on what `stepHeight` you selected.
+
+Disclaimer: using this on servers may get you banned/kicked for cheating!

examplemods/npcspawnertest.js

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+(() => {
+    PluginAPI.dedicatedServer.appendCode(function () {
+        PluginAPI.addEventListener("processcommand", (event) => {
+            if (!ModAPI.reflect.getClassById("net.minecraft.entity.player.EntityPlayerMP").instanceOf(event.sender.getRef())) { return; }
+
+            if (event.command.toLowerCase().startsWith("/spawnnpc2")) {
+                AsyncSink.startDebuggingFS();
+                const world = event.sender.getServerForPlayer();
+                const senderPos = event.sender.getPosition();
+
+                // Create a fake player GameProfile
+                const GameProfileClass = ModAPI.reflect.getClassById("net.lax1dude.eaglercraft.v1_8.mojang.authlib.GameProfile");
+                var UUID = ModAPI.hooks.methods[ModAPI.util.getMethodFromPackage("net.lax1dude.eaglercraft.v1_8.EaglercraftUUID", "randomUUID")]();
+
+                //Not using UUID to make patching easier for now
+
+                const fakeProfile = GameProfileClass.constructors[1](null, ModAPI.util.str("Steve"));
+
+                // Get the PlayerInteractionManager class
+                const PlayerInteractionManagerClass = ModAPI.reflect.getClassById("net.minecraft.server.management.ItemInWorldManager");
+                const playerInteractionManager = PlayerInteractionManagerClass.constructors[0](world.getRef());
+
+                // Get the EntityPlayerMP class to spawn the fake player
+                const EntityPlayerMPClass = ModAPI.reflect.getClassById("net.minecraft.entity.player.EntityPlayerMP");
+                const fakePlayer = ModAPI.util.wrap(EntityPlayerMPClass.constructors[0](
+                    ModAPI.server.getRef(), world.getRef(), fakeProfile, playerInteractionManager
+                ));
+                ModAPI.hooks._teavm.$rt_startThread(() => {
+                    return EntityPlayerMPClass.constructors[0](ModAPI.server.getRef(), world.getRef(), fakeProfile, playerInteractionManager);
+                }, function (...args) {
+                    console.log(this, args);
+                    var fakePlayer = ModAPI.util.wrap(args[0]);
+
+                    // Set the fake player position to be near the command sender
+                    console.log(senderPos);
+                    fakePlayer.setPosition(senderPos.getX(), senderPos.getY(), senderPos.getZ());
+
+                    // Add the fake player to the world
+                    world.spawnEntityInWorld(fakePlayer.getRef());
+
+                    // Notify the player that the fake player has been spawned
+                    const ChatComponentTextClass = ModAPI.reflect.getClassById("net.minecraft.util.ChatComponentText");
+                    event.sender.addChatMessage(ChatComponentTextClass.constructors[0](ModAPI.util.str("Fake Steve has been spawned!")));
+                });
+
+
+                // Prevent the command from executing further
+                event.preventDefault = true;
+            }
+        });
+    });
+})();

postinit.js

@@ -667,6 +667,17 @@ globalThis.modapi_postinit = "(" + (() => {
         return x;
     };
 
+    var desktopServerStartup = ModAPI.util.getMethodFromPackage("net.lax1dude.eaglercraft.v1_8.sp.internal.ClientPlatformSingleplayer", "startIntegratedServer");
+    const desktopServerStartupMethod = ModAPI.hooks.methods[desktopServerStartup];
+    ModAPI.hooks.methods[desktopServerStartup] = function (...args) {
+        var x = desktopServerStartupMethod.apply(this, args);
+        ModAPI.dedicatedServer._data.forEach((code)=>{
+            (new Function(code))();
+        });
+        console.log("[ModAPI] Hooked into external integrated server.");
+        return x;
+    };
+
     ModAPI.events.newEvent("load", "client");
 
     ModAPI.events.newEvent("sendchatmessage", "client");