u45

desktopRuntime/resources/assets/minecraft/lang/en_US.lang

@@ -592,7 +592,7 @@ eaglercraft.singleplayer.demo.create.create.tooltip=Play the Minecraft 1.8 demo
 eaglercraft.singleplayer.demo.create.join=Join Shared World
 eaglercraft.singleplayer.demo.create.join.tooltip=Join someone else's world and play multiplayer
 
-eaglercraft.createWorld.seedNote=Note: Vanilla seeds now work!
+eaglercraft.createWorld.seedNote=Note: Vanilla seeds work
 
 eaglercraft.singleplayer.oldseedwarning.title=Old World Detected!
 eaglercraft.singleplayer.oldseedwarning.msg1=Please use EaglercraftX u32 or older to "Re-Create" this world

src/game/java/net/minecraft/client/gui/GuiMultiplayer.java

@@ -100,9 +100,8 @@ public class GuiMultiplayer extends GuiScreen implements GuiYesNoCallback {
 			this.serverListSelector.func_148195_a(this.savedServerList);
 			if (lanServerList == null) {
 				lanServerList = new LANServerList();
-			} else {
-				lanServerList.forceRefresh();
 			}
+			lanServerList.forceRefresh();
 		} else {
 			this.serverListSelector.setDimensions(this.width, this.height, 32, this.height - 64);
 		}

src/lwjgl/java/net/lax1dude/eaglercraft/v1_8/internal/PlatformInput.java

@@ -14,8 +14,6 @@ import org.lwjgl.glfw.GLFWGamepadState;
 import org.lwjgl.glfw.GLFWVidMode;
 import org.lwjgl.system.MemoryStack;
 
-import net.lax1dude.eaglercraft.v1_8.Display;
-
 /**
  * Copyright (c) 2022-2024 lax1dude, ayunami2000. All Rights Reserved.
  * 
@@ -302,7 +300,7 @@ public class PlatformInput {
 		update(0);
 	}
 
-	private static final long[] syncTimer = new long[1];
+	private static long syncTimer = 0l;
 
 	public static void update(int limitFps) {
 		glfwPollEvents();
@@ -311,10 +309,23 @@ public class PlatformInput {
 			glfwVSyncState = vsync;
 		}
 		glfwSwapBuffers(win);
-		if(limitFps > 0 && !vsync) {
+		if(!vsync && limitFps > 0 && limitFps <= 1000) {
-			Display.sync(limitFps, syncTimer);
+			long frameNanos = (1000000000l / limitFps);
+			if(syncTimer == 0l) {
+				syncTimer = System.nanoTime() + frameNanos;
+			}else {
+				long nanos = System.nanoTime();
+				int remaining = (int)((syncTimer - nanos) / 1000000l);
+				if(remaining > 0) {
+					PlatformRuntime.sleep(remaining);
+					nanos = System.nanoTime();
+				}
+				if((syncTimer += frameNanos) < nanos) {
+					syncTimer = nanos;
+				}
+			}
 		}else {
-			syncTimer[0] = 0l;
+			syncTimer = 0l;
 		}
 	}
 

src/lwjgl/java/net/lax1dude/eaglercraft/v1_8/internal/PlatformRuntime.java

@@ -647,4 +647,8 @@ public class PlatformRuntime {
 		// nope
 	}
 
+	public static boolean immediateContinueSupported() {
+		return false;
+	}
+
 }

src/lwjgl/java/net/lax1dude/eaglercraft/v1_8/internal/buffer/EaglerLWJGLAllocator.java

@@ -33,48 +33,74 @@ public class EaglerLWJGLAllocator {
 		return allocCount;
 	}
 
+	private static final ByteBuffer ZERO_LENGTH_BYTE_BUFFER = new EaglerLWJGLByteBuffer(0l, 0, true);
+
 	public static ByteBuffer allocByteBuffer(int len) {
-		long ret = JEmalloc.nje_malloc(len);
+		if(len != 0) {
-		if(ret == 0l) {
+			long ret = JEmalloc.nje_malloc(len);
-			throw new OutOfMemoryError("Native je_malloc call returned null pointer!");
+			if(ret == 0l) {
+				throw new OutOfMemoryError("Native je_malloc call returned null pointer!");
+			}
+			if(enableAllocCount) ++allocCount;
+			return new EaglerLWJGLByteBuffer(ret, len, true);
+		}else {
+			return ZERO_LENGTH_BYTE_BUFFER;
 		}
-		if(enableAllocCount) ++allocCount;
-		return new EaglerLWJGLByteBuffer(ret, len, true);
 	}
 
+	private static final ShortBuffer ZERO_LENGTH_SHORT_BUFFER = new EaglerLWJGLShortBuffer(0l, 0, true);
+
 	public static ShortBuffer allocShortBuffer(int len) {
-		long ret = JEmalloc.nje_malloc(len << 1);
+		if(len != 0) {
-		if(ret == 0l) {
+			long ret = JEmalloc.nje_malloc(len << 1);
-			throw new OutOfMemoryError("Native je_malloc call returned null pointer!");
+			if(ret == 0l) {
+				throw new OutOfMemoryError("Native je_malloc call returned null pointer!");
+			}
+			if(enableAllocCount) ++allocCount;
+			return new EaglerLWJGLShortBuffer(ret, len, true);
+		}else {
+			return ZERO_LENGTH_SHORT_BUFFER;
 		}
-		if(enableAllocCount) ++allocCount;
-		return new EaglerLWJGLShortBuffer(ret, len, true);
 	}
 
+	private static final IntBuffer ZERO_LENGTH_INT_BUFFER = new EaglerLWJGLIntBuffer(0l, 0, true);
+
 	public static IntBuffer allocIntBuffer(int len) {
-		long ret = JEmalloc.nje_malloc(len << 2);
+		if(len != 0) {
-		if(ret == 0l) {
+			long ret = JEmalloc.nje_malloc(len << 2);
-			throw new OutOfMemoryError("Native je_malloc call returned null pointer!");
+			if(ret == 0l) {
+				throw new OutOfMemoryError("Native je_malloc call returned null pointer!");
+			}
+			if(enableAllocCount) ++allocCount;
+			return new EaglerLWJGLIntBuffer(ret, len, true);
+		}else {
+			return ZERO_LENGTH_INT_BUFFER;
 		}
-		if(enableAllocCount) ++allocCount;
-		return new EaglerLWJGLIntBuffer(ret, len, true);
 	}
 
+	private static final FloatBuffer ZERO_LENGTH_FLOAT_BUFFER = new EaglerLWJGLFloatBuffer(0l, 0, true);
+
 	public static FloatBuffer allocFloatBuffer(int len) {
-		long ret = JEmalloc.nje_malloc(len << 2);
+		if(len != 0) {
-		if(ret == 0l) {
+			long ret = JEmalloc.nje_malloc(len << 2);
-			throw new OutOfMemoryError("Native je_malloc call returned null pointer!");
+			if(ret == 0l) {
+				throw new OutOfMemoryError("Native je_malloc call returned null pointer!");
+			}
+			if(enableAllocCount) ++allocCount;
+			return new EaglerLWJGLFloatBuffer(ret, len, true);
+		}else {
+			return ZERO_LENGTH_FLOAT_BUFFER;
 		}
-		if(enableAllocCount) ++allocCount;
-		return new EaglerLWJGLFloatBuffer(ret, len, true);
 	}
 
 	public static void freeByteBuffer(ByteBuffer buffer) {
 		if(buffer instanceof EaglerLWJGLByteBuffer) {
 			EaglerLWJGLByteBuffer buf = (EaglerLWJGLByteBuffer)buffer;
 			if(buf.original) {
-				JEmalloc.nje_free(buf.address);
+				if(buf.address != 0l) {
-				if(enableAllocCount) --allocCount;
+					JEmalloc.nje_free(buf.address);
+					if(enableAllocCount) --allocCount;
+				}
 			}else {
 				throwNotOriginal(buffer);
 			}
@@ -96,8 +122,10 @@ public class EaglerLWJGLAllocator {
 		if(buffer instanceof EaglerLWJGLShortBuffer) {
 			EaglerLWJGLShortBuffer buf = (EaglerLWJGLShortBuffer)buffer;
 			if(buf.original) {
-				JEmalloc.nje_free(buf.address);
+				if(buf.address != 0l) {
-				if(enableAllocCount) --allocCount;
+					JEmalloc.nje_free(buf.address);
+					if(enableAllocCount) --allocCount;
+				}
 			}else {
 				throwNotOriginal(buffer);
 			}
@@ -119,8 +147,10 @@ public class EaglerLWJGLAllocator {
 		if(buffer instanceof EaglerLWJGLIntBuffer) {
 			EaglerLWJGLIntBuffer buf = (EaglerLWJGLIntBuffer)buffer;
 			if(buf.original) {
-				JEmalloc.nje_free(buf.address);
+				if(buf.address != 0l) {
-				if(enableAllocCount) --allocCount;
+					JEmalloc.nje_free(buf.address);
+					if(enableAllocCount) --allocCount;
+				}
 			}else {
 				throwNotOriginal(buffer);
 			}
@@ -142,8 +172,10 @@ public class EaglerLWJGLAllocator {
 		if(buffer instanceof EaglerLWJGLFloatBuffer) {
 			EaglerLWJGLFloatBuffer buf = (EaglerLWJGLFloatBuffer)buffer;
 			if(buf.original) {
-				JEmalloc.nje_free(buf.address);
+				if(buf.address != 0l) {
-				if(enableAllocCount) --allocCount;
+					JEmalloc.nje_free(buf.address);
+					if(enableAllocCount) --allocCount;
+				}
 			}else {
 				throwNotOriginal(buffer);
 			}

src/main/java/net/lax1dude/eaglercraft/v1_8/Display.java

@@ -19,7 +19,6 @@ import net.lax1dude.eaglercraft.v1_8.internal.PlatformInput;
  */
 public class Display {
 
-	private static long lastSwap = 0l;
 	private static long lastDPIUpdate = -250l;
 	private static float cacheDPI = 1.0f;
 
@@ -79,41 +78,6 @@ public class Display {
 		PlatformInput.update(limitFramerate);
 	}
 
-	private static final long[] defaultSyncPtr = new long[1];
-
-	public static void sync(int limitFramerate) {
-		sync(limitFramerate, defaultSyncPtr);
-	}
-
-	public static boolean sync(int limitFramerate, long[] timerPtr) {
-		boolean limitFPS = limitFramerate > 0 && limitFramerate < 1000;
-		boolean blocked = false;
-		
-		if(limitFPS) {
-			if(timerPtr[0] == 0l) {
-				timerPtr[0] = EagRuntime.steadyTimeMillis();
-			}else {
-				long millis = EagRuntime.steadyTimeMillis();
-				long frameMillis = (1000l / limitFramerate);
-				long frameTime = millis - timerPtr[0];
-				if(frameTime > 2000l || frameTime < 0l) {
-					frameTime = frameMillis;
-					timerPtr[0] = millis;
-				}else {
-					timerPtr[0] += frameMillis;
-				}
-				if(frameTime >= 0l && frameTime < frameMillis) {
-					EagUtils.sleep(frameMillis - frameTime);
-					blocked = true;
-				}
-			}
-		}else {
-			timerPtr[0] = 0l;
-		}
-		
-		return blocked;
-	}
-
 	public static boolean contextLost() {
 		return PlatformInput.contextLost();
 	}

src/main/java/net/lax1dude/eaglercraft/v1_8/EagRuntime.java

@@ -375,4 +375,8 @@ public class EagRuntime {
 		PlatformRuntime.immediateContinue();
 	}
 
+	public static boolean immediateContinueSupported() {
+		return PlatformRuntime.immediateContinueSupported();
+	}
+
 }

src/main/java/net/lax1dude/eaglercraft/v1_8/EaglerInputStream.java

@@ -142,6 +142,16 @@ public class EaglerInputStream extends InputStream {
 		}
 	}
 
+	public static byte[] inputStreamToBytesNoClose(InputStream is) throws IOException {
+		EaglerOutputStream os = new EaglerOutputStream(1024);
+		byte[] buf = new byte[1024];
+		int i;
+		while ((i = is.read(buf)) != -1) {
+			os.write(buf, 0, i);
+		}
+		return os.toByteArray();
+	}
+
 	public byte[] getAsArray() {
 		if (pos == 0 && count == buf.length) {
 			return buf;

src/main/java/net/lax1dude/eaglercraft/v1_8/EaglercraftVersion.java

@@ -10,7 +10,7 @@ public class EaglercraftVersion {
 	/// Customize these to fit your fork:
 	
 	public static final String projectForkName = "EaglercraftX";
-	public static final String projectForkVersion = "u44";
+	public static final String projectForkVersion = "u45";
 	public static final String projectForkVendor = "lax1dude";
 	
 	public static final String projectForkURL = "https://gitlab.com/lax1dude/eaglercraftx-1.8";
@@ -20,20 +20,20 @@ public class EaglercraftVersion {
 	public static final String projectOriginName = "EaglercraftX";
 	public static final String projectOriginAuthor = "lax1dude";
 	public static final String projectOriginRevision = "1.8";
-	public static final String projectOriginVersion = "u44";
+	public static final String projectOriginVersion = "u45";
 	
 	public static final String projectOriginURL = "https://gitlab.com/lax1dude/eaglercraftx-1.8"; // rest in peace
 	
 	// EPK Version Identifier
 	
-	public static final String EPKVersionIdentifier = "u44"; // Set to null to disable EPK version check
+	public static final String EPKVersionIdentifier = "u45"; // Set to null to disable EPK version check
 	
 	// Updating configuration
 	
 	public static final boolean enableUpdateService = true;
 
 	public static final String updateBundlePackageName = "net.lax1dude.eaglercraft.v1_8.client";
-	public static final int updateBundlePackageVersionInt = 44;
+	public static final int updateBundlePackageVersionInt = 45;
 
 	public static final String updateLatestLocalStorageKey = "latestUpdate_" + updateBundlePackageName;
 

src/main/java/net/lax1dude/eaglercraft/v1_8/minecraft/EaglerFolderResourcePack.java

@@ -211,7 +211,7 @@ public class EaglerFolderResourcePack extends AbstractResourcePack {
 									i += j;
 								}
 							}else {
-								buffer = EaglerInputStream.inputStreamToBytes(ziss);
+								buffer = EaglerInputStream.inputStreamToBytesNoClose(ziss);
 							}
 							(new VFile2(prefix, folderName, fn.substring(prefixLen))).setAllBytes(buffer);
 							totalSize += buffer.length;

src/main/java/net/lax1dude/eaglercraft/v1_8/opengl/EaglercraftGPU.java

@@ -930,6 +930,8 @@ public class EaglercraftGPU {
 		InstancedParticleRenderer.destroy();
 		EffectPipelineFXAA.destroy();
 		TextureCopyUtil.destroy();
+		FixedFunctionPipeline.flushCache();
+		StreamBuffer.destroyPool();
 		emulatedVAOs = false;
 		emulatedVAOState = null;
 		glesVers = -1;

src/main/java/net/lax1dude/eaglercraft/v1_8/opengl/FixedFunctionPipeline.java

@@ -76,8 +76,8 @@ public class FixedFunctionPipeline {
 		StreamBufferInstance sb = self.streamBuffer.getBuffer(buffer.remaining());
 		self.currentVertexArray = sb;
 		
-		EaglercraftGPU.bindGLBufferArray(sb.vertexArray);
+		EaglercraftGPU.bindGLBufferArray(sb.getVertexArray());
-		EaglercraftGPU.bindGLArrayBuffer(sb.vertexBuffer);
+		EaglercraftGPU.bindGLArrayBuffer(sb.getVertexBuffer());
 		
 		_wglBufferSubData(GL_ARRAY_BUFFER, 0, buffer);
 		

src/main/java/net/lax1dude/eaglercraft/v1_8/opengl/StreamBuffer.java

@@ -7,7 +7,7 @@ import static net.lax1dude.eaglercraft.v1_8.opengl.RealOpenGLEnums.*;
 import static net.lax1dude.eaglercraft.v1_8.internal.PlatformOpenGL.*;
 
 /**
- * Copyright (c) 2023 lax1dude. All Rights Reserved.
+ * Copyright (c) 2023-2024 lax1dude. All Rights Reserved.
  * 
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
@@ -23,10 +23,48 @@ import static net.lax1dude.eaglercraft.v1_8.internal.PlatformOpenGL.*;
  */
 public class StreamBuffer {
 
+	public static final int poolSize = 16;
+
 	public final int initialSize;
 	public final int initialCount;
 	public final int maxCount;
 
+	protected static final PoolInstance[] pool = new PoolInstance[poolSize];
+	protected static int poolBufferID = 0;
+
+	static {
+		for(int i = 0; i < poolSize; ++i) {
+			pool[i] = new PoolInstance();
+		}
+	}
+
+	protected static class PoolInstance {
+		
+		protected IBufferGL vertexBuffer = null;
+		protected int vertexBufferSize = 0;
+		
+	}
+
+	private static PoolInstance fillPoolInstance() {
+		PoolInstance ret = pool[poolBufferID++];
+		if(poolBufferID > poolSize - 1) {
+			poolBufferID = 0;
+		}
+		return ret;
+	}
+
+	private static void resizeInstance(PoolInstance instance, int requiredMemory) {
+		if(instance.vertexBuffer == null) {
+			instance.vertexBuffer = _wglGenBuffers();
+		}
+		if(instance.vertexBufferSize < requiredMemory) {
+			int newSize = (requiredMemory & 0xFFFFF000) + 0x2000;
+			EaglercraftGPU.bindGLArrayBuffer(instance.vertexBuffer);
+			_wglBufferData(GL_ARRAY_BUFFER, newSize, GL_STREAM_DRAW);
+			instance.vertexBufferSize = newSize;
+		}
+	}
+
 	protected StreamBufferInstance[] buffers;
 
 	protected int currentBufferId = 0;
@@ -36,9 +74,8 @@ public class StreamBuffer {
 
 	public static class StreamBufferInstance {
 
+		protected PoolInstance poolInstance = null;
 		protected IBufferArrayGL vertexArray = null;
-		protected IBufferGL vertexBuffer = null;
-		protected int vertexBufferSize = 0;
 
 		public boolean bindQuad16 = false;
 		public boolean bindQuad32 = false;
@@ -48,7 +85,7 @@ public class StreamBuffer {
 		}
 
 		public IBufferGL getVertexBuffer() {
-			return vertexBuffer;
+			return poolInstance.vertexBuffer;
 		}
 
 	}
@@ -58,9 +95,14 @@ public class StreamBuffer {
 	}
 
 	public StreamBuffer(int initialSize, int initialCount, int maxCount, IStreamBufferInitializer initializer) {
+		if(maxCount > poolSize) {
+			maxCount = poolSize;
+		}
 		this.buffers = new StreamBufferInstance[initialCount];
 		for(int i = 0; i < this.buffers.length; ++i) {
-			this.buffers[i] = new StreamBufferInstance();
+			StreamBufferInstance j = new StreamBufferInstance();
+			j.poolInstance = fillPoolInstance();
+			this.buffers[i] = j;
 		}
 		this.initialSize = initialSize;
 		this.initialCount = initialCount;
@@ -70,18 +112,10 @@ public class StreamBuffer {
 
 	public StreamBufferInstance getBuffer(int requiredMemory) {
 		StreamBufferInstance next = buffers[(currentBufferId++) % buffers.length];
-		if(next.vertexBuffer == null) {
+		resizeInstance(next.poolInstance, requiredMemory);
-			next.vertexBuffer = _wglGenBuffers();
-		}
 		if(next.vertexArray == null) {
 			next.vertexArray = EaglercraftGPU.createGLBufferArray();
-			initializer.initialize(next.vertexArray, next.vertexBuffer);
+			initializer.initialize(next.vertexArray, next.poolInstance.vertexBuffer);
-		}
-		if(next.vertexBufferSize < requiredMemory) {
-			int newSize = (requiredMemory & 0xFFFFF000) + 0x2000;
-			EaglercraftGPU.bindGLArrayBuffer(next.vertexBuffer);
-			_wglBufferData(GL_ARRAY_BUFFER, newSize, GL_STREAM_DRAW);
-			next.vertexBufferSize = newSize;
 		}
 		return next;
 	}
@@ -102,12 +136,10 @@ public class StreamBuffer {
 						if(buffers[i].vertexArray != null) {
 							EaglercraftGPU.destroyGLBufferArray(buffers[i].vertexArray);
 						}
-						if(buffers[i].vertexBuffer != null) {
-							_wglDeleteBuffers(buffers[i].vertexBuffer);
-						}
 					}
 				}
 				buffers = newArray;
+				refill();
 			}
 			overflowCounter = 0;
 		}else if(overflowCounter > 15) {
@@ -125,25 +157,51 @@ public class StreamBuffer {
 					}
 				}
 				buffers = newArray;
+				refill();
 			}
 			overflowCounter = 0;
 		}
 		currentBufferId = 0;
 	}
 
+	private void refill() {
+		for(int i = 0; i < buffers.length; ++i) {
+			PoolInstance j = fillPoolInstance();
+			StreamBufferInstance k = buffers[i];
+			if(j != k.poolInstance) {
+				PoolInstance l = k.poolInstance;
+				k.poolInstance = j;
+				if(k.vertexArray != null) {
+					if(j.vertexBuffer == null) {
+						resizeInstance(j, l.vertexBufferSize);
+					}
+					initializer.initialize(k.vertexArray, j.vertexBuffer);
+				}
+			}
+		}
+	}
+
 	public void destroy() {
 		for(int i = 0; i < buffers.length; ++i) {
 			StreamBufferInstance next = buffers[i];
 			if(next.vertexArray != null) {
 				EaglercraftGPU.destroyGLBufferArray(next.vertexArray);
 			}
-			if(next.vertexBuffer != null) {
-				_wglDeleteBuffers(next.vertexBuffer);
-			}
 		}
 		buffers = new StreamBufferInstance[initialCount];
-		for(int i = 0; i < buffers.length; ++i) {
+		for(int i = 0; i < initialCount; ++i) {
-			buffers[i] = new StreamBufferInstance();
+			StreamBufferInstance j = new StreamBufferInstance();
+			j.poolInstance = fillPoolInstance();
+			buffers[i] = j;
+		}
+	}
+
+	public static void destroyPool() {
+		for(int i = 0; i < pool.length; ++i) {
+			if(pool[i].vertexBuffer != null) {
+				_wglDeleteBuffers(pool[i].vertexBuffer);
+				pool[i].vertexBuffer = null;
+			}
 		}
 	}
 

src/main/java/net/lax1dude/eaglercraft/v1_8/sp/SingleplayerServerController.java

@@ -153,7 +153,7 @@ public class SingleplayerServerController implements ISaveFormat {
 	}
 	
 	public static boolean isChannelNameAllowed(String ch) {
-		return !IPC_CHANNEL.equals(ch) && !PLAYER_CHANNEL.equals(ch);
+		return !ch.startsWith("~!");
 	}
 	
 	public static void openPlayerChannel(String ch) {

src/main/java/net/lax1dude/eaglercraft/v1_8/sp/lan/LANClientPeer.java

@@ -1,5 +1,6 @@
 package net.lax1dude.eaglercraft.v1_8.sp.lan;
 
+import java.util.LinkedList;
 import java.util.List;
 
 import net.lax1dude.eaglercraft.v1_8.EagRuntime;
@@ -42,6 +43,8 @@ class LANClientPeer {
 	protected long startTime;
 
 	protected String localICECandidate = null;
+	protected boolean localChannel = false;
+	protected List<byte[]> packetPreBuffer = null;
 
 	protected LANClientPeer(String clientId) {
 		this.clientId = clientId;
@@ -75,7 +78,19 @@ class LANClientPeer {
 
 	protected void handleSuccess() {
 		if(state == SENT_ICE_CANDIDATE) {
-			state = RECEIVED_SUCCESS;
+			if(localChannel) {
+				SingleplayerServerController.openPlayerChannel(clientId);
+				PlatformWebRTC.serverLANPeerMapIPC(clientId, clientId);
+				if(packetPreBuffer != null) {
+					for(byte[] b : packetPreBuffer) {
+						ClientPlatformSingleplayer.sendPacket(new IPCPacketData(clientId, b));
+					}
+					packetPreBuffer = null;
+				}
+				state = CONNECTED;
+			}else {
+				state = RECEIVED_SUCCESS;
+			}
 		}else if(state != CONNECTED) {
 			logger.error("Relay [{}] unexpected IPacket05ClientSuccess for '{}'", LANServerController.lanRelaySocket.getURI(), clientId);
 		}
@@ -113,13 +128,7 @@ class LANClientPeer {
 								localICECandidate = ((LANPeerEvent.LANPeerICECandidateEvent)evt).candidates;
 								continue read_loop;
 							}
-						}
+							break;
-						case RECEIVED_ICE_CANDIDATE: {
-							if(evt instanceof LANPeerEvent.LANPeerICECandidateEvent) {
-								LANServerController.lanRelaySocket.writePacket(new RelayPacket03ICECandidate(clientId, ((LANPeerEvent.LANPeerICECandidateEvent)evt).candidates));
-								state = SENT_ICE_CANDIDATE;
-								continue read_loop;
-							}
 						}
 						case RECEIVED_DESCRIPTION: {
 							if(evt instanceof LANPeerEvent.LANPeerDescriptionEvent) {
@@ -127,15 +136,50 @@ class LANClientPeer {
 								state = SENT_DESCRIPTION;
 								continue read_loop;
 							}
+							break;
+						}
+						case RECEIVED_ICE_CANDIDATE: {
+							if(evt instanceof LANPeerEvent.LANPeerICECandidateEvent) {
+								LANServerController.lanRelaySocket.writePacket(new RelayPacket03ICECandidate(clientId, ((LANPeerEvent.LANPeerICECandidateEvent)evt).candidates));
+								state = SENT_ICE_CANDIDATE;
+								continue read_loop;
+							}else if(evt instanceof LANPeerEvent.LANPeerDataChannelEvent) {
+								localChannel = true;
+								continue read_loop;
+							}else if(evt instanceof LANPeerEvent.LANPeerPacketEvent) {
+								if(packetPreBuffer == null) packetPreBuffer = new LinkedList<>();
+								packetPreBuffer.add(((LANPeerEvent.LANPeerPacketEvent)evt).payload);
+								continue read_loop;
+							}
+							break;
+						}
+						case SENT_ICE_CANDIDATE: {
+							if(evt instanceof LANPeerEvent.LANPeerDataChannelEvent) {
+								localChannel = true;
+								continue read_loop;
+							}else if(evt instanceof LANPeerEvent.LANPeerPacketEvent) {
+								if(packetPreBuffer == null) packetPreBuffer = new LinkedList<>();
+								packetPreBuffer.add(((LANPeerEvent.LANPeerPacketEvent)evt).payload);
+								continue read_loop;
+							}
+							break;
 						}
-						case SENT_ICE_CANDIDATE:
 						case RECEIVED_SUCCESS: {
 							if(evt instanceof LANPeerEvent.LANPeerDataChannelEvent) {
 								SingleplayerServerController.openPlayerChannel(clientId);
 								PlatformWebRTC.serverLANPeerMapIPC(clientId, clientId);
+								if(packetPreBuffer != null) {
+									for(byte[] b : packetPreBuffer) {
+										ClientPlatformSingleplayer.sendPacket(new IPCPacketData(clientId, b));
+									}
+									packetPreBuffer = null;
+								}
 								state = CONNECTED;
 								continue read_loop;
+							}else if(evt instanceof LANPeerEvent.LANPeerICECandidateEvent) {
+								continue read_loop;
 							}
+							break;
 						}
 						case CONNECTED: {
 							if(evt instanceof LANPeerEvent.LANPeerPacketEvent) {
@@ -144,6 +188,7 @@ class LANClientPeer {
 								ClientPlatformSingleplayer.sendPacket(new IPCPacketData(clientId, ((LANPeerEvent.LANPeerPacketEvent)evt).payload));
 								continue read_loop;
 							}
+							break;
 						}
 						default: {
 							break;

src/main/java/net/lax1dude/eaglercraft/v1_8/sp/lan/LANServerController.java

@@ -12,6 +12,7 @@ import net.lax1dude.eaglercraft.v1_8.EagUtils;
 import net.lax1dude.eaglercraft.v1_8.internal.PlatformWebRTC;
 import net.lax1dude.eaglercraft.v1_8.log4j.LogManager;
 import net.lax1dude.eaglercraft.v1_8.log4j.Logger;
+import net.lax1dude.eaglercraft.v1_8.sp.SingleplayerServerController;
 import net.lax1dude.eaglercraft.v1_8.sp.relay.RelayManager;
 import net.lax1dude.eaglercraft.v1_8.sp.relay.RelayServerSocket;
 import net.lax1dude.eaglercraft.v1_8.sp.relay.pkt.*;
@@ -142,7 +143,9 @@ public class LANServerController {
 			while((pkt = lanRelaySocket.readPacket()) != null) {
 				if(pkt instanceof RelayPacket02NewClient) {
 					RelayPacket02NewClient ipkt = (RelayPacket02NewClient) pkt;
-					if(clients.containsKey(ipkt.clientId)) {
+					if(!SingleplayerServerController.isChannelNameAllowed(ipkt.clientId)) {
+						logger.error("Relay [{}] relay tried to open disallowed channel name: '{}'", lanRelaySocket.getURI(), ipkt.clientId);
+					}else if(clients.containsKey(ipkt.clientId)) {
 						logger.error("Relay [{}] relay provided duplicate client '{}'", lanRelaySocket.getURI(), ipkt.clientId);
 					}else {
 						clients.put(ipkt.clientId, new LANClientPeer(ipkt.clientId));

src/main/java/net/lax1dude/eaglercraft/v1_8/sp/server/export/WorldConverterEPK.java

@@ -103,11 +103,10 @@ public class WorldConverterEPK {
 	public static byte[] exportWorld(String worldName) {
 		String realWorldName = worldName;
 		String worldOwner = "UNKNOWN";
-		String splitter = new String(new char[] { (char)253, (char)233, (char)233 });
+		int j = worldName.lastIndexOf(new String(new char[] { (char)253, (char)233, (char)233 }));
-		if(worldName.contains(splitter)) {
+		if(j != -1) {
-			int i = worldName.lastIndexOf(splitter);
+			worldOwner = worldName.substring(j + 3);
-			worldOwner = worldName.substring(i + 3);
+			realWorldName = worldName.substring(0, j);
-			realWorldName = worldName.substring(0, i);
 		}
 		VFile2 worldDir = EaglerIntegratedServerWorker.saveFormat.getSaveLoader(realWorldName, false).getWorldDirectory();
 		logger.info("Exporting world directory \"{}\" as EPK", worldDir.getPath());

src/main/java/net/lax1dude/eaglercraft/v1_8/sp/server/export/WorldConverterMCA.java

@@ -70,7 +70,6 @@ public class WorldConverterMCA {
 			ZipEntry f = null;
 			int lastProgUpdate = 0;
 			int prog = 0;
-			byte[] bb = new byte[16384];
 			while ((f = zis.getNextEntry()) != null) {
 				if (f.getName().contains("__MACOSX/")) continue;
 				if (f.isDirectory()) continue;
@@ -85,7 +84,7 @@ public class WorldConverterMCA {
 						j += k;
 					}
 				}else {
-					b = EaglerInputStream.inputStreamToBytes(zis);
+					b = EaglerInputStream.inputStreamToBytesNoClose(zis);
 				}
 				String fileName = f.getName().substring(folderPrefixOffset);
 				if (fileName.equals("level.dat") || fileName.equals("level.dat_old")) {

src/teavm-boot-menu/java/net/lax1dude/eaglercraft/v1_8/boot_menu/teavm/ClientBootFactory.java

@@ -382,7 +382,7 @@ public class ClientBootFactory {
 		System.arraycopy(classesServerJS, 0, concatClassesServerJS, appendToClassesServerJS.length, classesServerJS.length);
 		TeaVMBlobURLHandle classesServerJSURL = TeaVMBlobURLManager.registerNewURLByte(concatClassesServerJS, "text/javascript");
 		toCleanOnException.add(classesServerJSURL);
-		launchOpts.put("serverWorkerURI", classesServerJSURL);
+		launchOpts.put("serverWorkerURI", classesServerJSURL.toExternalForm());
 		doUpdateMessage(cb, "Resolving assets.epk (" + clientData.epkFiles.get(0).dataUUID + ")");
 		TeaVMBlobURLHandle assetsEPKURL = loadingCache.get(new UUIDStringPair(clientData.epkFiles.get(0).dataUUID, "application/octet-stream"));
 		if(assetsEPKURL == null) {

src/teavm/java/net/lax1dude/eaglercraft/v1_8/internal/PlatformInput.java

@@ -36,8 +36,6 @@ import org.teavm.jso.gamepad.Gamepad;
 import org.teavm.jso.gamepad.GamepadButton;
 import org.teavm.jso.gamepad.GamepadEvent;
 
-import net.lax1dude.eaglercraft.v1_8.Display;
-import net.lax1dude.eaglercraft.v1_8.EagUtils;
 import net.lax1dude.eaglercraft.v1_8.internal.teavm.ClientMain;
 import net.lax1dude.eaglercraft.v1_8.internal.teavm.EarlyLoadScreen;
 import net.lax1dude.eaglercraft.v1_8.internal.teavm.InputEvent;
@@ -889,7 +887,7 @@ public class PlatformInput {
 		update(0);
 	}
 
-	private static final long[] syncTimer = new long[1];
+	private static double syncTimer = 0.0;
 
 	public static void update(int fpsLimit) {
 		double r = getDevicePixelRatio(win);
@@ -943,21 +941,44 @@ public class PlatformInput {
 		PlatformScreenRecord.captureFrameHook();
 		if(getVisibilityState(win.getDocument())) {
 			if(vsyncSupport && vsync) {
-				syncTimer[0] = 0l;
+				syncTimer = 0.0;
 				asyncRequestAnimationFrame();
 			}else {
-				if(fpsLimit <= 0) {
+				if(fpsLimit <= 0 || fpsLimit > 1000) {
-					syncTimer[0] = 0l;
+					syncTimer = 0.0;
 					PlatformRuntime.swapDelayTeaVM();
 				}else {
-					if(!Display.sync(fpsLimit, syncTimer)) {
+					double frameMillis = (1000.0 / fpsLimit);
+					if(syncTimer == 0.0) {
+						syncTimer = PlatformRuntime.steadyTimeMillisTeaVM() + frameMillis;
 						PlatformRuntime.swapDelayTeaVM();
+					}else {
+						double millis = PlatformRuntime.steadyTimeMillisTeaVM();
+						int remaining = (int)(syncTimer - millis);
+						if(remaining > 0) {
+							if(!PlatformRuntime.useDelayOnSwap && PlatformRuntime.immediateContinueSupport) {
+								PlatformRuntime.immediateContinue(); // cannot stack setTimeouts, or it will throttle
+								millis = PlatformRuntime.steadyTimeMillisTeaVM();
+								remaining = (int)(syncTimer - millis);
+								if(remaining > 0) {
+									PlatformRuntime.sleep((int)remaining);
+								}
+							}else {
+								PlatformRuntime.sleep((int)remaining);
+							}
+						}else {
+							PlatformRuntime.swapDelayTeaVM();
+						}
+						millis = PlatformRuntime.steadyTimeMillisTeaVM();
+						if((syncTimer += frameMillis) < millis) {
+							syncTimer = millis;
+						}
 					}
 				}
 			}
 		}else {
-			syncTimer[0] = 0l;
+			syncTimer = 0.0;
-			EagUtils.sleep(50);
+			PlatformRuntime.sleep(50);
 		}
 	}
 
@@ -1579,7 +1600,7 @@ public class PlatformInput {
 				EarlyLoadScreen.paintEnable(PlatformOpenGL.checkVAOCapable(), allowBootMenu);
 				
 				while(mouseEvents.isEmpty() && keyEvents.isEmpty() && touchEvents.isEmpty()) {
-					EagUtils.sleep(100);
+					PlatformRuntime.sleep(100);
 				}
 			}
 		}
@@ -1864,7 +1885,7 @@ public class PlatformInput {
 			if(touchKeyboardField != null) {
 				touchKeyboardField.blur();
 				touchKeyboardField.setValue("");
-				EagUtils.sleep(10);
+				PlatformRuntime.sleep(10);
 				if(touchKeyboardForm != null) {
 					touchKeyboardForm.removeChild(touchKeyboardField);
 				}else {
@@ -2135,7 +2156,7 @@ public class PlatformInput {
 			touchKeyboardField.blur();
 			touchKeyboardField.setValue("");
 			if(sync) {
-				EagUtils.sleep(10);
+				PlatformRuntime.sleep(10);
 				if(touchKeyboardForm != null) {
 					touchKeyboardForm.removeChild(touchKeyboardField);
 				}else {

src/teavm/java/net/lax1dude/eaglercraft/v1_8/internal/PlatformRuntime.java

@@ -766,6 +766,10 @@ public class PlatformRuntime {
 		}
 	}
 
+	public static boolean immediateContinueSupported() {
+		return immediateContinueSupport;
+	}
+
 	@Async
 	private static native void immediateContinueTeaVM0();
 
@@ -1101,6 +1105,10 @@ public class PlatformRuntime {
 	@JSBody(params = { "steadyTimeFunc" }, script = "return steadyTimeFunc();")
 	private static native double steadyTimeMillis0(JSObject steadyTimeFunc);
 
+	public static double steadyTimeMillisTeaVM() {
+		return steadyTimeMillis0(steadyTimeFunc);
+	}
+
 	public static long steadyTimeMillis() {
 		return (long)steadyTimeMillis0(steadyTimeFunc);
 	}

src/teavm/java/net/lax1dude/eaglercraft/v1_8/internal/PlatformVoiceClient.java

@@ -111,6 +111,7 @@ public class PlatformVoiceClient {
 		if(!PlatformWebRTC.hasCheckedSupport) PlatformWebRTC.supported();
 		switch(PlatformWebRTC.supportedImpl) {
 		case PlatformWebRTC.WEBRTC_SUPPORT_CORE:
+		case PlatformWebRTC.WEBRTC_SUPPORT_CORE_NON_PROMISING:
 		case PlatformWebRTC.WEBRTC_SUPPORT_WEBKIT:
 			addCoreIceCandidate(peerConnection, str);
 			break;

src/teavm/java/net/lax1dude/eaglercraft/v1_8/internal/PlatformWebRTC.java

@@ -49,8 +49,18 @@ public class PlatformWebRTC {
 	static final int WEBRTC_SUPPORT_CORE = 1;
 	static final int WEBRTC_SUPPORT_WEBKIT = 2;
 	static final int WEBRTC_SUPPORT_MOZ = 3;
+	static final int WEBRTC_SUPPORT_CORE_NON_PROMISING = 4;
 
-	@JSBody(script = "return (typeof RTCPeerConnection !== \"undefined\") ? 1 : ((typeof webkitRTCPeerConnection !== \"undefined\") ? 2 : ((typeof mozRTCPeerConnection !== \"undefined\") ? 3 : 0));")
+	@JSBody(script = "var checkPromising = function() { try {"
+			+ "return (typeof (new RTCPeerConnection({iceServers:[{urls:\"stun:127.69.0.1:6969\"}]})).createOffer() === \"object\") ? 1 : 4;"
+			+ "} catch(ex) {"
+			+ "return (ex.name === \"TypeError\") ? 4 : 1;"
+			+ "}};"
+			+ "return (typeof RTCPeerConnection !== \"undefined\")"
+			+ " ? checkPromising()"
+			+ " : ((typeof webkitRTCPeerConnection !== \"undefined\") ? 2"
+			+ " : ((typeof mozRTCPeerConnection !== \"undefined\") ? 3"
+			+ " : 0));")
 	private static native int checkSupportedImpl();
 
 	static boolean hasCheckedSupport = false;
@@ -69,6 +79,8 @@ public class PlatformWebRTC {
 				logger.info("Using webkit- prefix for RTCPeerConnection");
 			}else if(supportedImpl == WEBRTC_SUPPORT_MOZ) {
 				logger.info("Using moz- prefix for RTCPeerConnection");
+			}else if(supportedImpl == WEBRTC_SUPPORT_CORE_NON_PROMISING) {
+				logger.info("Using non-promising RTCPeerConnection");
 			}
 			if(supportedImpl != WEBRTC_SUPPORT_NONE) {
 				belowChrome71Fix = isChromeBelow71();
@@ -160,6 +172,7 @@ public class PlatformWebRTC {
 		if(!hasCheckedSupport) supported();
 		switch(supportedImpl) {
 		case WEBRTC_SUPPORT_CORE:
+		case WEBRTC_SUPPORT_CORE_NON_PROMISING:
 			return createCoreRTCPeerConnection(iceServers);
 		case WEBRTC_SUPPORT_WEBKIT:
 			return createWebkitRTCPeerConnection(iceServers);
@@ -191,11 +204,49 @@ public class PlatformWebRTC {
 	@JSBody(params = { "item" }, script = "return item.channel;")
 	static native JSObject getChannel(JSObject item);
 
+	@JSBody(params = { "peerConnection", "h1", "h2" }, script = "peerConnection.createOffer().then(h1).catch(h2);")
+	private static native void createOfferPromising(JSObject peerConnection, DescHandler h1, ErrorHandler h2);
+
 	@JSBody(params = { "peerConnection", "h1", "h2" }, script = "peerConnection.createOffer(h1, h2);")
-	static native void createOffer(JSObject peerConnection, DescHandler h1, ErrorHandler h2);
+	private static native void createOfferLegacy(JSObject peerConnection, DescHandler h1, ErrorHandler h2);
+
+	static void createOffer(JSObject peerConnection, DescHandler h1, ErrorHandler h2) {
+		if(!hasCheckedSupport) supported();
+		switch(supportedImpl) {
+		case WEBRTC_SUPPORT_CORE:
+			createOfferPromising(peerConnection, h1, h2);
+			break;
+		case WEBRTC_SUPPORT_WEBKIT:
+		case WEBRTC_SUPPORT_MOZ:
+		case WEBRTC_SUPPORT_CORE_NON_PROMISING:
+			createOfferLegacy(peerConnection, h1, h2);
+			break;
+		default:
+			throw new UnsupportedOperationException();
+		}
+	}
+
+	@JSBody(params = { "peerConnection", "desc", "h1", "h2" }, script = "peerConnection.setLocalDescription(desc).then(h1).catch(h2);")
+	private static native void setLocalDescriptionPromising(JSObject peerConnection, JSObject desc, EmptyHandler h1, ErrorHandler h2);
 
 	@JSBody(params = { "peerConnection", "desc", "h1", "h2" }, script = "peerConnection.setLocalDescription(desc, h1, h2);")
-	static native void setLocalDescription(JSObject peerConnection, JSObject desc, EmptyHandler h1, ErrorHandler h2);
+	private static native void setLocalDescriptionLegacy(JSObject peerConnection, JSObject desc, EmptyHandler h1, ErrorHandler h2);
+
+	static void setLocalDescription(JSObject peerConnection, JSObject desc, EmptyHandler h1, ErrorHandler h2) {
+		if(!hasCheckedSupport) supported();
+		switch(supportedImpl) {
+		case WEBRTC_SUPPORT_CORE:
+			setLocalDescriptionPromising(peerConnection, desc, h1, h2);
+			break;
+		case WEBRTC_SUPPORT_WEBKIT:
+		case WEBRTC_SUPPORT_MOZ:
+		case WEBRTC_SUPPORT_CORE_NON_PROMISING:
+			setLocalDescriptionLegacy(peerConnection, desc, h1, h2);
+			break;
+		default:
+			throw new UnsupportedOperationException();
+		}
+	}
 
 	@JSBody(params = { "peerConnection", "str" }, script = "var candidateList = JSON.parse(str); for (var i = 0; i < candidateList.length; ++i) { peerConnection.addIceCandidate(new RTCIceCandidate(candidateList[i])); }; return null;")
 	private static native void addCoreIceCandidates(JSObject peerConnection, String str);
@@ -219,6 +270,7 @@ public class PlatformWebRTC {
 		if(!hasCheckedSupport) supported();
 		switch(supportedImpl) {
 		case WEBRTC_SUPPORT_CORE:
+		case WEBRTC_SUPPORT_CORE_NON_PROMISING:
 		case WEBRTC_SUPPORT_WEBKIT:
 			addCoreIceCandidates(peerConnection, str);
 			break;
@@ -246,6 +298,7 @@ public class PlatformWebRTC {
 		}
 		switch(supportedImpl) {
 		case WEBRTC_SUPPORT_CORE:
+		case WEBRTC_SUPPORT_CORE_NON_PROMISING:
 			if(useSessionDescConstructor) {
 				setCoreRemoteDescriptionLegacy(peerConnection, str);
 			}else {
@@ -267,14 +320,20 @@ public class PlatformWebRTC {
 		}
 	}
 
+	@JSBody(params = { "peerConnection", "str", "h1", "h2" }, script = "try { peerConnection.setRemoteDescription(str).then(h1).catch(h2); return true; } catch(ex) { if(ex.name === \"TypeError\") return false; else throw ex; }")
+	private static native boolean setCoreRemoteDescription2Promising(JSObject peerConnection, JSObject str, EmptyHandler h1, ErrorHandler h2);
+
 	@JSBody(params = { "peerConnection", "str", "h1", "h2" }, script = "try { peerConnection.setRemoteDescription(str, h1, h2); return true; } catch(ex) { if(ex.name === \"TypeError\") return false; else throw ex; }")
-	private static native boolean setCoreRemoteDescription2(JSObject peerConnection, JSObject str, EmptyHandler h1, ErrorHandler h2);
+	private static native boolean setCoreRemoteDescription2Legacy(JSObject peerConnection, JSObject str, EmptyHandler h1, ErrorHandler h2);
+
+	@JSBody(params = { "peerConnection", "str", "h1", "h2" }, script = "peerConnection.setRemoteDescription(new RTCSessionDescription(str)).then(h1).catch(h2);")
+	private static native void setCoreRemoteDescription2PromisingLegacy(JSObject peerConnection, JSObject str, EmptyHandler h1, ErrorHandler h2);
 
 	@JSBody(params = { "peerConnection", "str", "h1", "h2" }, script = "peerConnection.setRemoteDescription(new RTCSessionDescription(str), h1, h2);")
-	private static native void setCoreRemoteDescription2Legacy(JSObject peerConnection, JSObject str, EmptyHandler h1, ErrorHandler h2);
+	private static native void setCoreRemoteDescription2LegacyLegacy(JSObject peerConnection, JSObject str, EmptyHandler h1, ErrorHandler h2);
 
 	@JSBody(params = { "peerConnection", "str", "h1", "h2" }, script = "peerConnection.setRemoteDescription(new mozRTCSessionDescription(str), h1, h2);")
-	private static native void setMozRemoteDescription2Legacy(JSObject peerConnection, JSObject str, EmptyHandler h1, ErrorHandler h2);
+	private static native void setMozRemoteDescription2LegacyLegacy(JSObject peerConnection, JSObject str, EmptyHandler h1, ErrorHandler h2);
 
 	static void setRemoteDescription2(JSObject peerConnection, JSObject str, EmptyHandler h1, ErrorHandler h2) {
 		if(!hasCheckedSupport) supported();
@@ -284,20 +343,31 @@ public class PlatformWebRTC {
 		switch(supportedImpl) {
 		case WEBRTC_SUPPORT_CORE:
 			if(useSessionDescConstructor) {
-				setCoreRemoteDescription2Legacy(peerConnection, str, h1, h2);
+				setCoreRemoteDescription2PromisingLegacy(peerConnection, str, h1, h2);
 			}else {
-				if(!setCoreRemoteDescription2(peerConnection, str, h1, h2)) {
+				if(!setCoreRemoteDescription2Promising(peerConnection, str, h1, h2)) {
 					useSessionDescConstructor = true;
 					logger.info("Note: Caught suspicious exception, using legacy RTCSessionDescription method");
-					setCoreRemoteDescription2Legacy(peerConnection, str, h1, h2);
+					setCoreRemoteDescription2PromisingLegacy(peerConnection, str, h1, h2);
 				}
 			}
 			break;
 		case WEBRTC_SUPPORT_WEBKIT:
-			setCoreRemoteDescription2Legacy(peerConnection, str, h1, h2);
+			setCoreRemoteDescription2LegacyLegacy(peerConnection, str, h1, h2);
 			break;
 		case WEBRTC_SUPPORT_MOZ:
-			setMozRemoteDescription2Legacy(peerConnection, str, h1, h2);
+			setMozRemoteDescription2LegacyLegacy(peerConnection, str, h1, h2);
+			break;
+		case WEBRTC_SUPPORT_CORE_NON_PROMISING:
+			if(useSessionDescConstructor) {
+				setCoreRemoteDescription2LegacyLegacy(peerConnection, str, h1, h2);
+			}else {
+				if(!setCoreRemoteDescription2Legacy(peerConnection, str, h1, h2)) {
+					useSessionDescConstructor = true;
+					logger.info("Note: Caught suspicious exception, using legacy RTCSessionDescription method");
+					setCoreRemoteDescription2LegacyLegacy(peerConnection, str, h1, h2);
+				}
+			}
 			break;
 		default:
 			throw new UnsupportedOperationException();
@@ -312,8 +382,27 @@ public class PlatformWebRTC {
 			+ "}")
 	private static native void removeExtmapAllowMixed(JSObject objIn);
 
+	@JSBody(params = { "peerConnection", "h1", "h2" }, script = "peerConnection.createAnswer().then(h1).catch(h2);")
+	private static native void createAnswerPromising(JSObject peerConnection, DescHandler h1, ErrorHandler h2);
+
 	@JSBody(params = { "peerConnection", "h1", "h2" }, script = "peerConnection.createAnswer(h1, h2);")
-	static native void createAnswer(JSObject peerConnection, DescHandler h1, ErrorHandler h2);
+	private static native void createAnswerLegacy(JSObject peerConnection, DescHandler h1, ErrorHandler h2);
+
+	static void createAnswer(JSObject peerConnection, DescHandler h1, ErrorHandler h2) {
+		if(!hasCheckedSupport) supported();
+		switch(supportedImpl) {
+		case WEBRTC_SUPPORT_CORE:
+			createAnswerPromising(peerConnection, h1, h2);
+			break;
+		case WEBRTC_SUPPORT_WEBKIT:
+		case WEBRTC_SUPPORT_MOZ:
+		case WEBRTC_SUPPORT_CORE_NON_PROMISING:
+			createAnswerLegacy(peerConnection, h1, h2);
+			break;
+		default:
+			throw new UnsupportedOperationException();
+		}
+	}
 
 	@JSBody(params = { "sock", "buffer" }, script = "sock.send(buffer);")
 	static native void nativeBinarySend(WebSocket sock, ArrayBuffer buffer);

src/teavm/java/net/lax1dude/eaglercraft/v1_8/internal/buffer/EaglerArrayBufferAllocator.java

@@ -8,7 +8,7 @@ import org.teavm.jso.typedarrays.Uint16Array;
 import org.teavm.jso.typedarrays.Uint8Array;
 
 /**
- * Copyright (c) 2022-2023 lax1dude. All Rights Reserved.
+ * Copyright (c) 2022-2024 lax1dude. All Rights Reserved.
  * 
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
@@ -30,8 +30,14 @@ public class EaglerArrayBufferAllocator {
 		}
 	}
 
+	private static final ByteBuffer ZERO_LENGTH_BYTE_BUFFER = new EaglerArrayByteBuffer(Int8Array.create(0));
+
 	public static ByteBuffer allocateByteBuffer(int size) {
-		return new EaglerArrayByteBuffer(Int8Array.create(size));
+		if(size != 0) {
+			return new EaglerArrayByteBuffer(Int8Array.create(size));
+		}else {
+			return ZERO_LENGTH_BYTE_BUFFER;
+		}
 	}
 
 	public static ByteBuffer wrapByteBufferTeaVM(DataView dv) {
@@ -42,16 +48,28 @@ public class EaglerArrayBufferAllocator {
 		return new EaglerArrayByteBuffer(typedArray);
 	}
 
+	private static final IntBuffer ZERO_LENGTH_INT_BUFFER = new EaglerArrayIntBuffer(Int32Array.create(0));
+
 	public static IntBuffer allocateIntBuffer(int size) {
-		return new EaglerArrayIntBuffer(Int32Array.create(size));
+		if(size != 0) {
+			return new EaglerArrayIntBuffer(Int32Array.create(size));
+		}else {
+			return ZERO_LENGTH_INT_BUFFER;
+		}
 	}
 
 	public static IntBuffer wrapIntBufferTeaVM(Int32Array typedArray) {
 		return new EaglerArrayIntBuffer(typedArray);
 	}
 
+	private static final FloatBuffer ZERO_LENGTH_FLOAT_BUFFER = new EaglerArrayFloatBuffer(Float32Array.create(0));
+
 	public static FloatBuffer allocateFloatBuffer(int size) {
-		return new EaglerArrayFloatBuffer(Float32Array.create(size));
+		if(size != 0) {
+			return new EaglerArrayFloatBuffer(Float32Array.create(size));
+		}else {
+			return ZERO_LENGTH_FLOAT_BUFFER;
+		}
 	}
 
 	public static FloatBuffer wrapFloatBufferTeaVM(Float32Array typedArray) {

src/wasm-gc-teavm-loader/js/library.js

@@ -41,6 +41,11 @@ addToLibrary({
 		return id;
 	},
 	resultFailed: function(msg) {
+		results = null;
+		epwFile = null;
+		
+		setTimeout(unsetHeapViews, 20);
+		
 		const parentElement = createCrashParentElement();
 		
 		const messageContainer = document.createElement("div");
@@ -85,40 +90,43 @@ addToLibrary({
 		for(var i = 0, j; i < numEPKs; ++i) {
 			j = idx + 11 + i * 3;
 			epkFiles[i] = {
-				data: results[HEAP32[j]],
+				"data": results[HEAP32[j]],
-				name: results[HEAP32[j + 1]],
+				"name": results[HEAP32[j + 1]],
-				path: results[HEAP32[j + 2]]
+				"path": results[HEAP32[j + 2]]
 			};
 		}
 		
-		results.length = 0;
+		results = null;
+		epwFile = null;
 		
-		window.__eaglercraftXLoaderContext = {
+		setTimeout(unsetHeapViews, 20);
-			getEaglercraftXOpts: function() {
+		
+		window["__eaglercraftXLoaderContext"] = {
+			"getEaglercraftXOpts": function() {
 				return optsObj;
 			},
-			getEagRuntimeJSURL: function() {
+			"getEagRuntimeJSURL": function() {
 				return eagRuntimeJSURL;
 			},
-			getClassesWASMURL: function() {
+			"getClassesWASMURL": function() {
 				return classesWASMURL;
 			},
-			getClassesDeobfWASMURL: function() {
+			"getClassesDeobfWASMURL": function() {
 				return classesDeobfWASMURL;
 			},
-			getClassesTEADBGURL: function() {
+			"getClassesTEADBGURL": function() {
 				return classesDeobfTEADBGURL;
 			},
-			getEPKFiles: function() {
+			"getEPKFiles": function() {
 				return epkFiles;
 			},
-			getRootElement: function() {
+			"getRootElement": function() {
 				return rootElement;
 			},
-			getMainArgs: function() {
+			"getMainArgs": function() {
 				return [];
 			},
-			getImageURL: function(idx) {
+			"getImageURL": function(idx) {
 				switch(idx) {
 				case 0:
 					return splashURL;
@@ -132,7 +140,7 @@ addToLibrary({
 					return null;
 				}
 			},
-			runMain: function(fn) {
+			"runMain": function(fn) {
 				setTimeout(fn, 10);
 			}
 		};
@@ -152,6 +160,11 @@ addToLibrary({
 		const markupData = results[HEAP32[idx + 2]];
 		const markup = markupData ? UTF8Decoder.decode(markupData) : "<h1>Failed to load error screen</h1>";
 		
+		results = null;
+		epwFile = null;
+		
+		setTimeout(unsetHeapViews, 20);
+		
 		const parentElement = createCrashParentElement();
 		
 		const img = document.createElement("img");

src/wasm-gc-teavm-loader/js/pre.js

@@ -14,20 +14,24 @@
  * 
  */
 
+var loaderWASMPath = window["__eaglercraftXLoaderContextPre"]["loaderWASMURL"];
+
 Module["locateFile"] = function(path) {
 	if(path === "loader.wasm") {
-		return window.__eaglercraftXLoaderContextPre.loaderWASMURL;
+		return loaderWASMPath;
 	}else {
 		return path;
 	}
 };
 
-const rootElement = window.__eaglercraftXLoaderContextPre.rootElement;
+var rootElement = window["__eaglercraftXLoaderContextPre"]["rootElement"];
-const optsObj = window.__eaglercraftXLoaderContextPre.eaglercraftXOpts;
+var optsObj = window["__eaglercraftXLoaderContextPre"]["eaglercraftXOpts"];
-const epwFile = window.__eaglercraftXLoaderContextPre.theEPWFileBuffer;
+var epwFile = window["__eaglercraftXLoaderContextPre"]["theEPWFileBuffer"];
-const splashURL = window.__eaglercraftXLoaderContextPre.splashURL;
+var splashURL = window["__eaglercraftXLoaderContextPre"]["splashURL"];
 
-const results = [ null ];
+delete window["__eaglercraftXLoaderContextPre"];
+
+var results = [ null ];
 
 function createCrashParentElement() {
 	var oldSplash = null;
@@ -59,3 +63,9 @@ function createCrashParentElement() {
 	
 	return parentElement;
 }
+
+function unsetHeapViews() {
+	HEAP = HEAP8 = HEAPU8 = HEAP16 = HEAPU16 = HEAP32 = HEAPU32 = HEAPF32 = HEAPF64 = null;
+	wasmMemory = null;
+	Module = null;
+}

src/wasm-gc-teavm/java/net/lax1dude/eaglercraft/v1_8/internal/PlatformRuntime.java

@@ -464,6 +464,9 @@ public class PlatformRuntime {
 	@Import(module = "platformRuntime", name = "immediateContinue")
 	private static native void immediateContinue0();
 
+	@Import(module = "platformRuntime", name = "immediateContinueSupported")
+	public static native boolean immediateContinueSupported();
+
 	public static void postCreate() {
 		
 	}

src/wasm-gc-teavm/java/net/lax1dude/eaglercraft/v1_8/internal/buffer/WASMGCBufferAllocator.java

@@ -32,7 +32,7 @@ public class WASMGCBufferAllocator {
 
 	public static Address malloc(int size) {
 		if(size == 0) {
-			throw new IllegalArgumentException("Tried to allocate 0 bytes!");
+			return Address.fromInt(0);
 		}
 		Address addr;
 		if(enableBufferOverflowCheck) {
@@ -55,11 +55,11 @@ public class WASMGCBufferAllocator {
 	}
 
 	public static Address calloc(int size) {
+		if(size == 0) {
+			return Address.fromInt(0);
+		}
 		Address addr;
 		if(enableBufferOverflowCheck) {
-			if(size == 0) {
-				throw new OutOfMemoryError("Tried to allocate 0 bytes!");
-			}
 			addr = DirectMalloc.calloc(size + 12);
 			if(addr.toInt() == 0) {
 				throw new OutOfMemoryError("DirectMalloc returned null pointer!");
@@ -87,33 +87,55 @@ public class WASMGCBufferAllocator {
 				if(tag != ptr.add(size + 8).getInt()) {
 					throw new RuntimeException("Detected a buffer write overflow");
 				}
-				DirectMalloc.free(ptr);
-			}else {
-				DirectMalloc.free(ptr);
 			}
+			DirectMalloc.free(ptr);
 		}
 	}
 
+	private static final ByteBuffer ZERO_LENGTH_BYTE_BUFFER = new DirectMallocByteBuffer(Address.fromInt(0), 0, true);
+
 	public static ByteBuffer allocateByteBuffer(int size) {
-		return new DirectMallocByteBuffer(malloc(size), size, true);
+		if(size != 0) {
+			return new DirectMallocByteBuffer(malloc(size), size, true);
+		}else {
+			return ZERO_LENGTH_BYTE_BUFFER;
+		}
 	}
 
+	private static final ShortBuffer ZERO_LENGTH_SHORT_BUFFER = new DirectMallocShortBuffer(Address.fromInt(0), 0, true);
+
 	public static ShortBuffer allocateShortBuffer(int size) {
-		return new DirectMallocShortBuffer(malloc(size << 1), size, true);
+		if(size != 0) {
+			return new DirectMallocShortBuffer(malloc(size << 1), size, true);
+		}else {
+			return ZERO_LENGTH_SHORT_BUFFER;
+		}
 	}
 
+	private static final IntBuffer ZERO_LENGTH_INT_BUFFER = new DirectMallocIntBuffer(Address.fromInt(0), 0, true);
+
 	public static IntBuffer allocateIntBuffer(int size) {
-		return new DirectMallocIntBuffer(malloc(size << 2), size, true);
+		if(size != 0) {
+			return new DirectMallocIntBuffer(malloc(size << 2), size, true);
+		}else {
+			return ZERO_LENGTH_INT_BUFFER;
+		}
 	}
 
+	private static final FloatBuffer ZERO_LENGTH_FLOAT_BUFFER = new DirectMallocFloatBuffer(Address.fromInt(0), 0, true);
+
 	public static FloatBuffer allocateFloatBuffer(int size) {
-		return new DirectMallocFloatBuffer(malloc(size << 2), size, true);
+		if(size != 0) {
+			return new DirectMallocFloatBuffer(malloc(size << 2), size, true);
+		}else {
+			return ZERO_LENGTH_FLOAT_BUFFER;
+		}
 	}
 
 	public static void freeByteBuffer(ByteBuffer buffer) {
 		DirectMallocByteBuffer buf = (DirectMallocByteBuffer)buffer;
 		if(buf.original) {
-			WASMGCBufferAllocator.free(buf.address);
+			free(buf.address);
 		}else {
 			throwNotOriginal(buf);
 		}
@@ -122,7 +144,7 @@ public class WASMGCBufferAllocator {
 	public static void freeShortBuffer(ShortBuffer buffer) {
 		DirectMallocShortBuffer buf = (DirectMallocShortBuffer)buffer;
 		if(buf.original) {
-			WASMGCBufferAllocator.free(buf.address);
+			free(buf.address);
 		}else {
 			throwNotOriginal(buf);
 		}
@@ -131,7 +153,7 @@ public class WASMGCBufferAllocator {
 	public static void freeIntBuffer(IntBuffer buffer) {
 		DirectMallocIntBuffer buf = (DirectMallocIntBuffer)buffer;
 		if(buf.original) {
-			WASMGCBufferAllocator.free(buf.address);
+			free(buf.address);
 		}else {
 			throwNotOriginal(buf);
 		}
@@ -140,7 +162,7 @@ public class WASMGCBufferAllocator {
 	public static void freeFloatBuffer(FloatBuffer buffer) {
 		DirectMallocFloatBuffer buf = (DirectMallocFloatBuffer)buffer;
 		if(buf.original) {
-			WASMGCBufferAllocator.free(buf.address);
+			free(buf.address);
 		}else {
 			throwNotOriginal(buf);
 		}

src/wasm-gc-teavm/java/net/lax1dude/eaglercraft/v1_8/internal/buffer/WASMGCDirectArrayConverter.java

@@ -1,7 +1,6 @@
 package net.lax1dude.eaglercraft.v1_8.internal.buffer;
 
 import org.teavm.interop.Address;
-import org.teavm.interop.DirectMalloc;
 import org.teavm.jso.typedarrays.Float32Array;
 import org.teavm.jso.typedarrays.Int16Array;
 import org.teavm.jso.typedarrays.Int32Array;

src/wasm-gc-teavm/js/eagruntime_entrypoint.js

@@ -28,6 +28,7 @@ async function entryPoint() {
 		crashURL = self.__eaglercraftXLoaderContext.getImageURL(2);
 		faviconURL = self.__eaglercraftXLoaderContext.getImageURL(3);
 		const args = self.__eaglercraftXLoaderContext.getMainArgs();
+		delete self.__eaglercraftXLoaderContext;
 		const isWorker = args[0] === "_worker_process_";
 
 		if(!isWorker) {

src/wasm-gc-teavm/js/platformInput.js

@@ -561,21 +561,39 @@ async function initPlatformInput(inputImports) {
 	 * @return {Promise}
 	 */
 	function syncDelay(fpsLimit) {
-		if(fpsLimit > 0 && fpsLimit < 1000) {
+		if(fpsLimit > 0 && fpsLimit <= 1000) {
+			const frameMillis = (1000 / fpsLimit);
 			if(manualSyncTimer === 0) {
-				manualSyncTimer = performance.now();
+				manualSyncTimer = performance.now() + frameMillis;
 			}else {
-				const millis = performance.now();
+				var millis = performance.now();
-				const frameMillis = (1000 / fpsLimit);
+				var remaining = (manualSyncTimer - millis) | 0;
-				var frameTime = millis - manualSyncTimer;
+				if(remaining > 0) {
-				if(frameTime > 2000 || frameTime < 0) {
+					if(!runtimeOpts.useDelayOnSwap && allowImmediateContinue) {
-					frameTime = frameMillis;
+						return immediateContinueImpl().then(function() {
+							var millis0 = performance.now();
+							var remaining0 = (manualSyncTimer - millis0) | 0;
+							if(remaining0 > 0) {
+								return sleepPromise(remaining0).then(function() {
+									var millis1 = performance.now();
+									if((manualSyncTimer += frameMillis) < millis1) {
+										manualSyncTimer = millis1;
+									}
+								});
+							}else if((manualSyncTimer += frameMillis) < millis0) {
+								manualSyncTimer = millis0;
+							}
+						});
+					}else {
+						return sleepPromise(remaining).then(function() {
+							var millis0 = performance.now();
+							if((manualSyncTimer += frameMillis) < millis0) {
+								manualSyncTimer = millis0;
+							}
+						});
+					}
+				}else if((manualSyncTimer += frameMillis) < millis) {
 					manualSyncTimer = millis;
-				}else {
-					manualSyncTimer += frameMillis;
-				}
-				if(frameTime >= 0 && frameTime < frameMillis) {
-					return sleepPromise(frameMillis - frameTime);
 				}
 			}
 		}else {

src/wasm-gc-teavm/js/platformRuntime.js

@@ -199,6 +199,13 @@ function swapDelayImpl() {
 
 eagruntimeImpl.platformRuntime["immediateContinue"] = new WebAssembly.Suspending(immediateContinueImpl);
 
+/**
+ * @return {boolean}
+ */
+eagruntimeImpl.platformRuntime["immediateContinueSupported"] = function() {
+	return allowImmediateContinue;
+};
+
 /**
  * @param {number} id
  * @param {string} str

wasm_gc_teavm/CompileLoaderWASM.bat

@@ -5,5 +5,5 @@ call emcc -c -O3 ../src/wasm-gc-teavm-loader/c/main.c -o bin/emscripten/main.o
 call emcc -c -O3 ../src/wasm-gc-teavm-loader/c/xz/xz_crc32.c -o bin/emscripten/xz_crc32.o
 call emcc -c -O3 ../src/wasm-gc-teavm-loader/c/xz/xz_dec_lzma2.c -o bin/emscripten/xz_dec_lzma2.o
 call emcc -c -O3 ../src/wasm-gc-teavm-loader/c/xz/xz_dec_stream.c -o bin/emscripten/xz_dec_stream.o
-call emcc -O3 -sMALLOC=dlmalloc -sALLOW_MEMORY_GROWTH -sINITIAL_HEAP=16777216 -sMAXIMUM_MEMORY=67108864 --pre-js ../src/wasm-gc-teavm-loader/js/pre.js --js-library ../src/wasm-gc-teavm-loader/js/library.js bin/emscripten/main.o bin/emscripten/xz_crc32.o bin/emscripten/xz_dec_lzma2.o bin/emscripten/xz_dec_stream.o -o javascript/loader.js
+call emcc -O3 -sMALLOC=dlmalloc -sALLOW_MEMORY_GROWTH -sINITIAL_HEAP=16777216 -sMAXIMUM_MEMORY=67108864 --closure 1 --closure-args=--isolation_mode=IIFE --closure-args=--emit_use_strict --pre-js ../src/wasm-gc-teavm-loader/js/pre.js --js-library ../src/wasm-gc-teavm-loader/js/library.js bin/emscripten/main.o bin/emscripten/xz_crc32.o bin/emscripten/xz_dec_lzma2.o bin/emscripten/xz_dec_stream.o -o javascript/loader.js
 pause

wasm_gc_teavm/CompileLoaderWASM.sh

@@ -4,4 +4,4 @@ emcc -c -O3 ../src/wasm-gc-teavm-loader/c/main.c -o bin/emscripten/main.o
 emcc -c -O3 ../src/wasm-gc-teavm-loader/c/xz/xz_crc32.c -o bin/emscripten/xz_crc32.o
 emcc -c -O3 ../src/wasm-gc-teavm-loader/c/xz/xz_dec_lzma2.c -o bin/emscripten/xz_dec_lzma2.o
 emcc -c -O3 ../src/wasm-gc-teavm-loader/c/xz/xz_dec_stream.c -o bin/emscripten/xz_dec_stream.o
-emcc -O3 -sMALLOC=dlmalloc -sALLOW_MEMORY_GROWTH -sINITIAL_HEAP=16777216 -sMAXIMUM_MEMORY=67108864 --pre-js ../src/wasm-gc-teavm-loader/js/pre.js --js-library ../src/wasm-gc-teavm-loader/js/library.js bin/emscripten/main.o bin/emscripten/xz_crc32.o bin/emscripten/xz_dec_lzma2.o bin/emscripten/xz_dec_stream.o -o javascript/loader.js
+emcc -O3 -sMALLOC=dlmalloc -sALLOW_MEMORY_GROWTH -sINITIAL_HEAP=16777216 -sMAXIMUM_MEMORY=67108864 --closure 1 --closure-args=--isolation_mode=IIFE --closure-args=--emit_use_strict --pre-js ../src/wasm-gc-teavm-loader/js/pre.js --js-library ../src/wasm-gc-teavm-loader/js/library.js bin/emscripten/main.o bin/emscripten/xz_crc32.o bin/emscripten/xz_dec_lzma2.o bin/emscripten/xz_dec_stream.o -o javascript/loader.js

wasm_gc_teavm/javascript/epw_meta.txt

@@ -1,8 +1,8 @@
-client-version-integer=44
+client-version-integer=45
 client-package-name=net.lax1dude.eaglercraft.v1_8.client
 client-origin-name=EaglercraftX
-client-origin-version=u44
+client-origin-version=u45
 client-origin-vendor=lax1dude
 client-fork-name=EaglercraftX
-client-fork-version=u44
+client-fork-version=u45
 client-fork-vendor=lax1dude