Replacing TextRenderer line wrapping with custom java, so both server and client…

Replacing TextRenderer line wrapping with custom java, so both server and client can use it for logic. Show 'start chat' button for entities with no conversation. Show text bubbles once a message is generated. Allow user to page through the messages, 3 lines at a time. Also adding some padding around the text (top and bottom).

src/client/java/com/owlmaddie/ClickHandler.java

@@ -105,9 +105,16 @@ public class ClickHandler {
 
         // Handle the click for the closest entity after the loop
         if (closestEntity != null) {
-            LOGGER.info("Clicked on text bubble above: " + closestEntity.getType().getName().getString());
-            //client.player.sendMessage(Text.literal("Clicked on text bubble above: " + closestEntity.getType().getName().getString()), false);
-            ModPackets.sendEntityClickPacket(closestEntity);
+            // Look-up conversation
+            ChatDataManager.EntityChatData chatData = ChatDataManager.getInstance().getOrCreateChatData(closestEntity.getId());
+
+            if (chatData.currentMessage.isEmpty()) {
+                // Start conversation
+                ModPackets.sendGenerateGreeting(closestEntity);
+            } else {
+                // Update lines read
+                ModPackets.sendUpdateLineNumber(closestEntity, chatData.currentLineNumber + ClientInit.DISPLAY_NUM_LINES);
+            }
         }
 
     }

src/client/java/com/owlmaddie/ClientInit.java

@@ -31,6 +31,8 @@ import java.util.stream.Collectors;
 public class ClientInit implements ClientModInitializer {
     public static final Logger LOGGER = LoggerFactory.getLogger("mobgpt");
     protected static TextureLoader textures = new TextureLoader();;
+    public static int DISPLAY_NUM_LINES = 3;
+    public static int DISPLAY_PADDING = 2;
 
 	@Override
     public void onInitializeClient() {
@@ -74,6 +76,30 @@ public class ClientInit implements ClientModInitializer {
         Tessellator.getInstance().draw();
     }
 
+    private void drawStartIcon(MatrixStack matrices, Entity entity, float x, float y, float width, float height) {
+        // Draw button icon
+        Identifier button_texture = textures.Get("ui", "button-chat");
+        RenderSystem.setShaderTexture(0, button_texture);
+        RenderSystem.enableDepthTest();
+        RenderSystem.enableBlend();
+        RenderSystem.defaultBlendFunc();
+        RenderSystem.setShader(GameRenderer::getPositionTexProgram);
+
+        Tessellator tessellator = Tessellator.getInstance();
+        BufferBuilder bufferBuilder = tessellator.getBuffer();
+        bufferBuilder.begin(VertexFormat.DrawMode.QUADS, VertexFormats.POSITION_TEXTURE);
+
+        float z = -0.01F;
+        bufferBuilder.vertex(matrices.peek().getPositionMatrix(), x, y + height, z).texture(0, 1).next();  // bottom left
+        bufferBuilder.vertex(matrices.peek().getPositionMatrix(), x + width, y + height, z).texture(1, 1).next();   // bottom right
+        bufferBuilder.vertex(matrices.peek().getPositionMatrix(), x + width, y, z).texture(1, 0).next();  // top right
+        bufferBuilder.vertex(matrices.peek().getPositionMatrix(), x, y, z).texture(0, 0).next(); // top left
+        tessellator.draw();
+
+        RenderSystem.disableBlend();
+        RenderSystem.disableDepthTest();
+    }
+
     private void drawEntityIcon(MatrixStack matrices, Entity entity, float x, float y, float width, float height) {
         // Draw face icon
         String entity_name = entity.getType().getUntranslatedName().toLowerCase(Locale.ROOT);
@@ -103,7 +129,6 @@ public class ClientInit implements ClientModInitializer {
         RenderSystem.disableDepthTest();
     }
 
-
     private void drawTextAboveEntities(WorldRenderContext context, float partialTicks) {
         Camera camera = context.camera();
         Entity cameraEntity = camera.getFocusedEntity();
@@ -155,10 +180,11 @@ public class ClientInit implements ClientModInitializer {
 
             // Look-up greeting (if any)
             ChatDataManager.EntityChatData chatData = ChatDataManager.getInstance().getOrCreateChatData(entity.getId());
+            List<String> lines = chatData.getWrappedLines();
 
-            // Generate ChatGPT random greeting
-            String baseText = chatData.currentMessage + " - " + entity.getType().getName().getString();
-            List<OrderedText> lines = fontRenderer.wrapLines(StringVisitable.plain(baseText), 20 * fontRenderer.getWidth("W"));
+            // Set the range of lines to display
+            int starting_line = chatData.currentLineNumber;
+            int ending_line = Math.min(chatData.currentLineNumber + DISPLAY_NUM_LINES, lines.size());
 
             // Push a new matrix onto the stack.
             matrices.push();
@@ -201,20 +227,16 @@ public class ClientInit implements ClientModInitializer {
             matrices.multiply(yawRotation);
 
             // Determine max line length
-            int maxLineLength = 0;
+            float linesDisplayed = ending_line - starting_line;
             float lineSpacing = 1F;
             float textHeaderHeight = 40F;
             float textFooterHeight = 5F;
-            for (OrderedText lineText : lines) {
-                int lineLength = fontRenderer.getWidth(lineText);
-                if (lineLength > maxLineLength) {
-                    maxLineLength = lineLength;
-                }
-            }
+
 
             // Calculate size of text scaled to world
-            float scaledTextHeight = (float) lines.size() * (fontRenderer.fontHeight + lineSpacing);
-            scaledTextHeight = Math.max(scaledTextHeight, 50F);
+            float scaledTextHeight = linesDisplayed * (fontRenderer.fontHeight + lineSpacing);
+            float minTextHeight = (DISPLAY_NUM_LINES * (fontRenderer.fontHeight + lineSpacing)) + (DISPLAY_PADDING * 2);
+            scaledTextHeight = Math.max(scaledTextHeight, minTextHeight);
 
             // Scale down before rendering textures (otherwise font is huge)
             matrices.scale(-0.02F, -0.02F, 0.02F);
@@ -222,6 +244,12 @@ public class ClientInit implements ClientModInitializer {
             // Translate above the entity
             matrices.translate(0F, -scaledTextHeight + -textHeaderHeight + -textFooterHeight, 0F);
 
+            // Check if conversation has started
+            if (chatData.currentMessage.isEmpty()) {
+                // Draw 'start' button
+                drawStartIcon(matrices, entity, 0, textHeaderHeight, 32, 17);
+
+            } else {
                 // Draw text background (no smaller than 50F tall)
                 drawTextBubbleBackground(matrices, entity, -64, 0, 128, scaledTextHeight);
 
@@ -231,12 +259,30 @@ public class ClientInit implements ClientModInitializer {
                 // Render each line of the text
                 int fullBright = 0xF000F0;
                 Matrix4f matrix = matrices.peek().getPositionMatrix();
-            float yOffset = 42.0F;
-            for (OrderedText lineText : lines) {
+                float yOffset = 40.0F + DISPLAY_PADDING;
+                int currentLineIndex = 0; // We'll use this to track which line we're on
+
+                for (String lineText : lines) {
+                    // Only draw lines that are within the specified range
+                    if (currentLineIndex >= starting_line && currentLineIndex < ending_line) {
                         fontRenderer.draw(lineText, -fontRenderer.getWidth(lineText) / 2f, yOffset, 0xffffff,
                                 false, matrix, immediate, TextLayerType.NORMAL, 0, fullBright);
                         yOffset += fontRenderer.fontHeight + lineSpacing;
                     }
+                    currentLineIndex++;
+
+                    if (currentLineIndex > ending_line) {
+                        break;
+                    }
+                }
+
+                // Add end of message
+                if (starting_line > 0 && starting_line == ending_line) {
+                    String lineText = "<end of message>";
+                    fontRenderer.draw(lineText, -fontRenderer.getWidth(lineText) / 2f, yOffset + 10F, 0xffffff,
+                            false, matrix, immediate, TextLayerType.NORMAL, 0, fullBright);
+                }
+            }
 
             // Pop the matrix to return to the original state.
             matrices.pop();

src/client/java/com/owlmaddie/ModPackets.java

@@ -11,12 +11,21 @@ import org.slf4j.LoggerFactory;
 public class ModPackets {
     public static final Logger LOGGER = LoggerFactory.getLogger("mobgpt");
 
-    public static void sendEntityClickPacket(Entity entity) {
+    public static void sendGenerateGreeting(Entity entity) {
         PacketByteBuf buf = new PacketByteBuf(Unpooled.buffer());
         buf.writeInt(entity.getId());
 
         // Send C2S packet
-        ClientPlayNetworking.send(ModInit.PACKET_CLIENT_CLICK, buf);
+        ClientPlayNetworking.send(ModInit.PACKET_CLIENT_GREETING, buf);
+    }
+
+    public static void sendUpdateLineNumber(Entity entity, Integer lineNumber) {
+        PacketByteBuf buf = new PacketByteBuf(Unpooled.buffer());
+        buf.writeInt(entity.getId());
+        buf.writeInt(lineNumber);
+
+        // Send C2S packet
+        ClientPlayNetworking.send(ModInit.PACKET_CLIENT_READ_NEXT, buf);
     }
 }
 

src/main/java/com/owlmaddie/ChatDataManager.java

@@ -8,6 +8,7 @@ import java.util.ArrayList;
 public class ChatDataManager {
     // Use a static instance to manage our data globally
     private static final ChatDataManager INSTANCE = new ChatDataManager();
+    public static int MAX_CHAR_PER_LINE = 22;
 
     // HashMap to associate unique entity IDs with their chat data
     private HashMap<Integer, EntityChatData> entityChatDataMap;
@@ -15,11 +16,13 @@ public class ChatDataManager {
     // Inner class to hold entity-specific data
     public static class EntityChatData {
         public String currentMessage;
+        public int currentLineNumber;
         public List<String> previousMessages;
         public String characterSheet;
 
         public EntityChatData() {
             this.currentMessage = "";
+            this.currentLineNumber = 0;
             this.previousMessages = new ArrayList<>();
             this.characterSheet = "";
         }
@@ -28,7 +31,7 @@ public class ChatDataManager {
         public void generateGreeting() {
             ChatGPTRequest.fetchGreetingFromChatGPT().thenAccept(greeting -> {
                 if (greeting != null) {
-                    this.currentMessage = greeting;
+                    this.addMessage(greeting);
                 }
             });
         }
@@ -39,6 +42,20 @@ public class ChatDataManager {
                 previousMessages.add(currentMessage);
             }
             currentMessage = message;
+
+            // Set line number of displayed text
+            this.currentLineNumber = 0;
+        }
+
+        // Get wrapped lines
+        public List<String> getWrappedLines() {
+            return LineWrapper.wrapLines(this.currentMessage, MAX_CHAR_PER_LINE);
+        }
+
+        // Update starting line number of displayed text
+        public void setLineNumber(Integer lineNumber) {
+            // Update displayed starting line # (between 0 and # of lines)
+            this.currentLineNumber = Math.min(Math.max(lineNumber, 0), this.getWrappedLines().size());
         }
     }
 

src/main/java/com/owlmaddie/LineWrapper.java

+package com.owlmaddie;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/*
+Wrap lines of text on a space character
+ */
+public class LineWrapper {
+
+    public static List<String> wrapLines(String text, int maxWidth) {
+        List<String> wrappedLines = new ArrayList<>();
+        String[] words = text.split(" ");
+        StringBuilder currentLine = new StringBuilder();
+
+        for (String word : words) {
+            // Check if adding the next word exceeds the line length
+            if (currentLine.length() + word.length() + 1 > maxWidth) {
+                if (currentLine.length() > 0) {
+                    wrappedLines.add(currentLine.toString());
+                    currentLine = new StringBuilder();
+                }
+                // If the word itself is longer than maxWidth, split the word
+                while (word.length() > maxWidth) {
+                    wrappedLines.add(word.substring(0, maxWidth));
+                    word = word.substring(maxWidth);
+                }
+            }
+            // Append the word to the line
+            if (currentLine.length() > 0) {
+                currentLine.append(" ");
+            }
+            currentLine.append(word);
+        }
+        // Add the last line if there's anything left
+        if (currentLine.length() > 0) {
+            wrappedLines.add(currentLine.toString());
+        }
+
+        return wrappedLines;
+    }
+}

src/main/java/com/owlmaddie/ModInit.java

@@ -11,7 +11,8 @@ import org.slf4j.LoggerFactory;
 
 public class ModInit implements ModInitializer {
     public static final Logger LOGGER = LoggerFactory.getLogger("mobgpt");
-	public static final Identifier PACKET_CLIENT_CLICK = new Identifier("mobgpt", "packet_client_click");
+	public static final Identifier PACKET_CLIENT_GREETING = new Identifier("mobgpt", "packet_client_greeting");
+	public static final Identifier PACKET_CLIENT_READ_NEXT = new Identifier("mobgpt", "packet_client_read_next");
 
 	@Override
 	public void onInitialize() {
@@ -19,7 +20,8 @@ public class ModInit implements ModInitializer {
 		// However, some things (like resources) may still be uninitialized.
 		// Proceed with mild caution.
 
-		ServerPlayNetworking.registerGlobalReceiver(PACKET_CLIENT_CLICK, (server, player, handler, buf, responseSender) -> {
+		// Handle packet for Greeting
+		ServerPlayNetworking.registerGlobalReceiver(PACKET_CLIENT_GREETING, (server, player, handler, buf, responseSender) -> {
 			int entityId = buf.readInt();
 
 			// Ensure that the task is synced with the server thread
@@ -28,13 +30,31 @@ public class ModInit implements ModInitializer {
 				Entity entity = player.getServerWorld().getEntityById(entityId);
 				if (entity != null) {
 					// Perform action with the clicked entity
-					LOGGER.info("Entity received: " + entity.getType().toString());
+					LOGGER.info("Generate greeting for: " + entity.getType().toString());
 					ChatDataManager.EntityChatData chatData = ChatDataManager.getInstance().getOrCreateChatData(entityId);
 					chatData.generateGreeting();
 				}
 			});
 		});
 
+		// Handle packet for reading lines of message
+		ServerPlayNetworking.registerGlobalReceiver(PACKET_CLIENT_READ_NEXT, (server, player, handler, buf, responseSender) -> {
+			int entityId = buf.readInt();
+			int lineNumber = buf.readInt();
+
+			// Ensure that the task is synced with the server thread
+			server.execute(() -> {
+				// Your logic here, e.g., handle the entity click
+				Entity entity = player.getServerWorld().getEntityById(entityId);
+				if (entity != null) {
+					// Perform action with the clicked entity
+					LOGGER.info("Increment read lines to " + lineNumber + " for: " + entity.getType().toString());
+					ChatDataManager.EntityChatData chatData = ChatDataManager.getInstance().getOrCreateChatData(entityId);
+					chatData.setLineNumber(lineNumber);
+				}
+			});
+		});
+
 		ServerWorldEvents.LOAD.register((server, world) -> {
 			// Load chat data...
 			LOGGER.info("LOAD chat data from NBT: " + world.getRegistryKey().getValue());