fix the weird shader bug finally and a few reported MP bugs

src/DifBuilder.hx

@@ -466,11 +466,59 @@ class DifBuilder {
 					colliderSurface.originalIndices = [];
 					colliderSurface.originalSurfaceIndex = surfaceindex;
 
-					var pc0 = geo.points[geo.windings[surface.windingStart + 1]];
-					var pc1 = geo.points[geo.windings[surface.windingStart + 0]];
-					var pc2 = geo.points[geo.windings[surface.windingStart + 2]];
-
+					// Pick the three non-collinear points
 					var texPlanes = geo.texGenEQs[surface.texGenIndex];
+
+					var startIdx = 0;
+					while (true) {
+						var pc0 = geo.points[geo.windings[surface.windingStart + startIdx + 1]];
+						var pc1 = geo.points[geo.windings[surface.windingStart + startIdx]];
+						var pc2 = geo.points[geo.windings[surface.windingStart + startIdx + 2]];
+
+						var tc0 = new Vector(texPlanes.planeX.x * pc0.x
+							+ texPlanes.planeX.y * pc0.y
+							+ texPlanes.planeX.z * pc0.z
+							+ texPlanes.planeX.d,
+							texPlanes.planeY.x * pc0.x
+							+ texPlanes.planeY.y * pc0.y
+							+ texPlanes.planeY.z * pc0.z
+							+ texPlanes.planeY.d, 0, 0);
+						var tc1 = new Vector(texPlanes.planeX.x * pc1.x
+							+ texPlanes.planeX.y * pc1.y
+							+ texPlanes.planeX.z * pc1.z
+							+ texPlanes.planeX.d,
+							texPlanes.planeY.x * pc1.x
+							+ texPlanes.planeY.y * pc1.y
+							+ texPlanes.planeY.z * pc1.z
+							+ texPlanes.planeY.d, 0, 0);
+						var tc2 = new Vector(texPlanes.planeX.x * pc2.x
+							+ texPlanes.planeX.y * pc2.y
+							+ texPlanes.planeX.z * pc2.z
+							+ texPlanes.planeX.d,
+							texPlanes.planeY.x * pc2.x
+							+ texPlanes.planeY.y * pc2.y
+							+ texPlanes.planeY.z * pc2.z
+							+ texPlanes.planeY.d, 0, 0);
+
+						var edge1 = new Vector(pc1.x - pc0.x, tc1.x - tc0.x, tc1.y - tc0.y);
+						var edge2 = new Vector(pc2.x - pc0.x, tc2.x - tc0.x, tc2.y - tc0.y);
+						var cp = edge1.cross(edge2);
+
+						if (cp.lengthSq() > 1e-12) {
+							break;
+						}
+
+						startIdx += 3;
+						if (startIdx >= surface.windingCount) {
+							startIdx = 0;
+							break;
+						}
+					}
+
+					var pc0 = geo.points[geo.windings[surface.windingStart + startIdx + 1]];
+					var pc1 = geo.points[geo.windings[surface.windingStart + startIdx]];
+					var pc2 = geo.points[geo.windings[surface.windingStart + startIdx + 2]];
+
 					var tc0 = new Vector(texPlanes.planeX.x * pc0.x
 						+ texPlanes.planeX.y * pc0.y
 						+ texPlanes.planeX.z * pc0.z

src/gui/GuiMLTextListCtrl.hx

@@ -76,6 +76,7 @@ class GuiMLTextListCtrl extends GuiControl {
 			textObjs.push(tobj);
 
 			if (this.scrollable) {
+				if (this.flow != null) {
 					if (this.flow.contains(tobj))
 						this.flow.removeChild(tobj);
 
@@ -84,6 +85,7 @@ class GuiMLTextListCtrl extends GuiControl {
 					this.flow.getProperties(tobj).isAbsolute = true;
 				}
 			}
+		}
 		this.texts = texts;
 		this._prevSelected = -1;
 		if (this.onSelectedFunc != null)

src/gui/MultiplayerLevelSelectGui.hx

@@ -152,8 +152,6 @@ class MultiplayerLevelSelectGui extends GuiImage {
 		playerWnd.extent = new Vector(640, 480);
 		innerCtrl.addChild(playerWnd);
 
-		custSelected = false;
-
 		var playerListArr = [];
 		if (Net.isHost) {
 			playerListArr.push({
@@ -240,7 +238,7 @@ class MultiplayerLevelSelectGui extends GuiImage {
 		customList.extent = new Vector(550, 2880);
 		customList.scrollable = true;
 		customList.onSelectedFunc = (idx) -> {
-			NetCommands.setLobbyCustLevelName(MPCustoms.missionList[idx].title);
+			NetCommands.setLobbyCustLevelName(MPCustoms.missionList[idx].path);
 			custSelected = true;
 			custSelectedIdx = idx;
 			custPath = MPCustoms.missionList[idx].path;
@@ -427,13 +425,24 @@ class MultiplayerLevelSelectGui extends GuiImage {
 		};
 
 		setLevelStr = (str) -> {
-			levelSelectOpts.optionText.text.text = str;
+			var cust = MPCustoms.missionList.filter(x -> x.path == str)[0];
+			levelSelectOpts.optionText.text.text = cust.title;
+			custSelected = true;
+			custPath = str;
+			if (Net.isHost) {
+				updateLobbyNames();
+			} else
 				updatePlayerCountFn(0, 0, 0, 0);
 		}
 
+		var customIsSelected = custSelected == true;
 		levelSelectOpts.setCurrentOption(currentSelectionStatic);
 		setLevel(currentSelectionStatic);
 		innerCtrl.addChild(levelSelectOpts);
+
+		if (customIsSelected) {
+			setLevelStr(custPath);
+		}
 	}
 
 	override function onResize(width:Int, height:Int) {

src/net/Net.hx

@@ -190,6 +190,10 @@ class Net {
 
 			var closing = false;
 
+			isMP = true;
+			isHost = false;
+			isClient = true;
+
 			var closeFunc = (msg:String, forceShow:Bool) -> {
 				if (closing)
 					return;
@@ -204,6 +208,9 @@ class Net {
 						var loadGui = new MultiplayerLoadingGui(msg);
 						MarbleGame.canvas.setContent(loadGui);
 						loadGui.setErrorStatus(msg);
+					} else {
+						var loadGui = cast(MarbleGame.canvas.content, MultiplayerLoadingGui);
+						loadGui.setErrorStatus(msg);
 					}
 				}
 			}
@@ -297,7 +304,7 @@ class Net {
 			}
 
 			var onDatachannelClose = (dc:RTCDataChannel) -> {
-				closeFunc("Server closed", true);
+				closeFunc("Disconnected", true);
 			}
 
 			var onDatachannelError = (msg:String) -> {
@@ -329,10 +336,6 @@ class Net {
 			clientDatachannelUnreliable.onError = (msg) -> {
 				onDatachannelError(msg);
 			}
-
-			isMP = true;
-			isHost = false;
-			isClient = true;
 		});
 	}
 
@@ -356,6 +359,7 @@ class Net {
 			Net.lobbyHostReady = false;
 			Net.lobbyClientReady = false;
 			Net.hostReady = false;
+			MultiplayerLevelSelectGui.custSelected = false;
 		}
 		if (Net.isHost) {
 			NetCommands.serverClosed();
@@ -375,6 +379,7 @@ class Net {
 			Net.lobbyHostReady = false;
 			Net.lobbyClientReady = false;
 			Net.hostReady = false;
+			MultiplayerLevelSelectGui.custSelected = false;
 		}
 	}
 
@@ -562,7 +567,11 @@ class Net {
 
 	static function onClientHandshakeComplete(conn:ClientConnection) {
 		// Send our current mission to connecting client
+		if (MultiplayerLevelSelectGui.custSelected) {
+			NetCommands.setLobbyCustLevelNameClient(conn, MultiplayerLevelSelectGui.custPath);
+		} else {
 			NetCommands.setLobbyLevelIndexClient(conn, MultiplayerLevelSelectGui.currentSelectionStatic);
+		}
 
 		if (serverInfo.state == "PLAYING") { // We initiated the game, directly add in the marble
 			if (MultiplayerLevelSelectGui.custSelected) {

src/net/NetCommands.hx

@@ -25,6 +25,9 @@ class NetCommands {
 	@:rpc(server) public static function setLobbyCustLevelName(str:String) {
 		if (MultiplayerLevelSelectGui.setLevelFn != null) {
 			MultiplayerLevelSelectGui.setLevelStr(str);
+		} else {
+			MultiplayerLevelSelectGui.custSelected = true;
+			MultiplayerLevelSelectGui.custPath = str;
 		}
 	}
 
@@ -113,7 +116,8 @@ class NetCommands {
 
 	@:rpc(client) public static function clientIsReady(clientId:Int) {
 		if (Net.isHost) {
-			if (Net.serverInfo.state == "WAITING" && MarbleGame.instance.world != null) {
+			if (Net.serverInfo.state == "WAITING") {
+				Console.log('Client ${clientId} is ready!');
 				if (clientId != -1)
 					Net.clientIdMap[clientId].ready();
 				else
@@ -127,6 +131,7 @@ class NetCommands {
 				}
 				if (allReady && Net.hostReady) {
 					if (MarbleGame.instance.world != null) {
+						Console.log('All are ready, starting');
 						MarbleGame.instance.world.allClientsReady();
 					}
 					Net.serverInfo.state = "PLAYING";