Integrated character builder and initial greeting handling.

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

@@ -8,6 +8,8 @@ import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
 
 
 public class ChatDataManager {
@@ -52,8 +54,21 @@ public class ChatDataManager {
             this.sender = ChatSender.NONE;
         }
 
+        public static String extractGreeting(String inputText) {
+            // Regex pattern to match the "Short Greeting" line and capture the greeting text
+            Pattern pattern = Pattern.compile("- Short Greeting: \"?([^\"]+)\"?");
+            Matcher matcher = pattern.matcher(inputText);
+
+            if (matcher.find()) {
+                // Return the captured group (greeting text), removing any quotes
+                return matcher.group(1).replace("\"", "");
+            }
+
+            return "Umm... hello... ugh..."; // Return a default string if no match is found
+        }
+
         // Generate greeting
-        public void generateMessage(ServerPlayerEntity player, String user_message) {
+        public void generateMessage(ServerPlayerEntity player, String systemPrompt, String user_message) {
             this.status = ChatStatus.PENDING;
             // Add USER Message
             //this.addMessage(user_message, ChatSender.USER);
@@ -89,12 +104,19 @@ public class ChatDataManager {
                 contextData.put("entity_name", entity.getCustomName().toString());
             }
             contextData.put("entity_type", entity.getType().getName().getString().toString());
+            contextData.put("entity_character_sheet", characterSheet);
 
             // fetch HTTP response from ChatGPT
-            ChatGPTRequest.fetchMessageFromChatGPT("chat", contextData).thenAccept(output_message -> {
-                if (output_message != null) {
+            ChatGPTRequest.fetchMessageFromChatGPT(systemPrompt, contextData).thenAccept(output_message -> {
+                if (output_message != null && systemPrompt == "system-character") {
+                    // Add NEW CHARACTER sheet & greeting
+                    this.characterSheet = output_message;
+                    String shortGreeting = extractGreeting(output_message);
+                    this.addMessage(shortGreeting.replace("\n", " "), ChatSender.ASSISTANT);
+
+                } else if (output_message != null && systemPrompt == "system-chat") {
                     // Add ASSISTANT message
-                    this.addMessage(output_message, ChatSender.ASSISTANT);
+                    this.addMessage(output_message.replace("\n", " "), ChatSender.ASSISTANT);
                 }
             });
 

src/main/java/com/owlmaddie/ChatGPTRequest.java

@@ -70,21 +70,22 @@ public class ChatGPTRequest {
         return result.replace("\"", "") ;
     }
 
-    public static CompletableFuture<String> fetchMessageFromChatGPT(String promptFileName, Map<String, String> context) {
+    public static CompletableFuture<String> fetchMessageFromChatGPT(String systemPrompt, Map<String, String> context) {
         return CompletableFuture.supplyAsync(() -> {
             try {
-                // Load and prepare the prompt template
-                String template = "";
-                if (!promptFileName.isEmpty()) {
+                // Get user message
+                String userMessage = context.get("message");
+
+                // Load and prepare the system prompt template
+                String systemMessage = "";
+                if (!systemPrompt.isEmpty()) {
                     // Load prompt from resources
-                    template = loadPromptFromResource(ModInit.serverInstance.getResourceManager(), "prompts/" + promptFileName);
-                } else if (context.containsKey("user_message")) {
-                    // Use 'user_message' as prompt if no template specified
-                    template = context.get("user_message");
+                    systemMessage = loadPromptFromResource(ModInit.serverInstance.getResourceManager(), "prompts/" + systemPrompt);
                 }
 
                 // Replace placeholders (if any)
-                String prompt = replacePlaceholders(template, context);
+                systemMessage = replacePlaceholders(systemMessage, context);
+                userMessage = replacePlaceholders(userMessage, context);
 
                 URL url = new URL("https://api.openai.com/v1/chat/completions");
                 HttpURLConnection connection = (HttpURLConnection) url.openConnection();
@@ -95,8 +96,8 @@ public class ChatGPTRequest {
 
                 // Build JSON payload for ChatGPT
                 List<ChatGPTRequestMessage> messages = new ArrayList<>();
-                messages.add(new ChatGPTRequestMessage("system", "You are a silly Minecraft entity who speaks to the player in short riddles."));
-                messages.add(new ChatGPTRequestMessage("user", prompt));
+                messages.add(new ChatGPTRequestMessage("system", systemMessage));
+                messages.add(new ChatGPTRequestMessage("user", userMessage));
 
                 // Convert JSON to String
                 ChatGPTRequestPayload payload = new ChatGPTRequestPayload("gpt-3.5-turbo", messages);
@@ -118,7 +119,7 @@ public class ChatGPTRequest {
                     Gson gsonOutput = new Gson();
                     ChatGPTResponse chatGPTResponse = gsonOutput.fromJson(response.toString(), ChatGPTResponse.class);
                     if (chatGPTResponse != null && chatGPTResponse.choices != null && !chatGPTResponse.choices.isEmpty()) {
-                        String content = chatGPTResponse.choices.get(0).message.content.replace("\n", " ");
+                        String content = chatGPTResponse.choices.get(0).message.content;
                         LOGGER.info(content);
                         return content;
                     }

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

@@ -48,7 +48,7 @@ public class ModInit implements ModInitializer {
 							chatData.status == ChatDataManager.ChatStatus.END) {
 						// Only generate a new greeting if not already doing so
 						LOGGER.info("Generate greeting for: " + entity.getType().toString());
-						chatData.generateMessage(player, "Hello!");
+						chatData.generateMessage(player, "system-character", "Please generate a new background character who lives near the {{player_biome}}");
 					}
 				}
 			});
@@ -106,7 +106,7 @@ public class ModInit implements ModInitializer {
 					if (chatData.status == ChatDataManager.ChatStatus.END) {
 						// Add new message
 						LOGGER.info("Add new message (" + message + ") to Entity: " + entity.getType().toString());
-						chatData.generateMessage(player, message);
+						chatData.generateMessage(player, "system-chat", message);
 					}
 				}
 			});

src/main/resources/data/mobgpt/prompts/system-character

+You are a RPG dungeon master, crafting a new character sheet in the following format. Be very creative with each new
+character. These characters will be inhabiting and participating in an epic fantasy adventure which takes place in
+Minecraft. Please limit traits to a few choices and keep them short and concise. Please avoid any specific races or
+classes. Please follow the character sheet format below:
+
+- Name:
+- Personality:
+- Speaking Style / Tone:
+- Likes:
+- Dislikes:
+- Age:
+- Alignment:
+- Short Greeting:
\ No newline at end of file

src/main/resources/data/mobgpt/prompts/chat → src/main/resources/data/mobgpt/prompts/system-chat

-Please respond directly to the following player's message, as if it was written by this Minecraft entity.
-Please do NOT break the 4th wall and refer to the player or game.
+Please respond directly to the player, as if it was written by the
+following Minecraft character. Please do NOT break the 4th wall.
 
 Entity Details:
- - Name: {{entity_name}}
- - Type: {{entity_type}}
+- Type: {{entity_type}}
+{{entity_character_sheet}}
 
-Player Details:
- - Name: {{player_name}}
- - Health: {{player_health}}
- - Hunger: {{player_hunger}}
- - Biome: {{player_biome}}
- - Held Item: {{player_held_item}}
- - Armor: Head: {{player_armor_head}}, Chest: {{player_armor_chest}}, Legs: {{player_armor_legs}}, Feet: {{player_armor_feet}}
- - Current World Time: {{world_time}} (24 hour format)
+Player Character Sheet:
+- Name: {{player_name}}
+- Health: {{player_health}}
+- Hunger: {{player_hunger}}
+- Held Item: {{player_held_item}}
+- Armor: Head: {{player_armor_head}}, Chest: {{player_armor_chest}}, Legs: {{player_armor_legs}}, Feet: {{player_armor_feet}}
 
-Player Message:
-{{message}}
\ No newline at end of file
+World Info:
+- Biome: {{player_biome}}
+- Current Time: {{world_time}} (24 hour format)
\ No newline at end of file