Merge branch 'main' of https://github.com/ritonioz/minecraft-ai-companion-mod-EMVs12-Project

src/client/java/AiCompanion/aicompanion2_0/client/AiChatScreen.java

@@ -0,0 +1,116 @@
+package AiCompanion.aicompanion2_0.client;
+
+import net.minecraft.client.gui.DrawContext;
+import net.minecraft.client.gui.screen.Screen;
+import net.minecraft.client.gui.widget.ButtonWidget;
+import net.minecraft.client.gui.widget.TextFieldWidget;
+import net.minecraft.text.OrderedText;
+import net.minecraft.text.Text;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class AiChatScreen extends Screen {
+
+    private final AiChatSession session;
+    private TextFieldWidget inputField;
+    private int scrollOffset = 0;
+
+    public AiChatScreen(AiChatSession session) {
+        super(Text.literal("AI Companion"));
+        this.session = session;
+    }
+
+    private List<String> displayLines() {
+        return session.getDisplayLines();
+    }
+
+    @Override
+    protected void init() {
+        inputField = new TextFieldWidget(
+            textRenderer, width / 2 - 150, height - 35, 270, 20,
+            Text.literal("Nachricht...")
+        );
+        inputField.setMaxLength(500);
+        inputField.setFocused(true);
+        addDrawableChild(inputField);
+
+        addDrawableChild(ButtonWidget.builder(Text.literal("Senden"), btn -> sendMessage())
+            .dimensions(width / 2 + 125, height - 35, 60, 20)
+            .build()
+        );
+
+        addDrawableChild(ButtonWidget.builder(Text.literal("Schließen"), btn -> close())
+            .dimensions(width / 2 - 30, height - 10, 60, 15)
+            .build()
+        );
+    }
+
+    @Override
+    public boolean keyPressed(int keyCode, int scanCode, int modifiers) {
+        if (keyCode == 257 || keyCode == 335) { // Enter
+            sendMessage();
+            return true;
+        }
+        return super.keyPressed(keyCode, scanCode, modifiers);
+    }
+
+    private void sendMessage() {
+        String msg = inputField.getText().trim();
+        if (msg.isEmpty()) return;
+        inputField.setText("");
+
+        displayLines().add("§eIch: §f" + msg);
+        displayLines().add("§7[AI denkt nach...]");
+        session.sendMessage(msg, response -> {
+            displayLines().remove("§7[AI denkt nach...]");
+            displayLines().add("§6AI: §f" + response);
+            // auto-scroll to bottom
+            scrollOffset = 0;
+        });
+    }
+
+    @Override
+    public void render(DrawContext context, int mouseX, int mouseY, float delta) {
+        renderBackground(context);
+
+        // Chat box background
+        context.fill(width / 2 - 155, 10, width / 2 + 155, height - 45, 0xAA000000);
+
+        // Title
+        context.drawCenteredTextWithShadow(textRenderer, "§6AI Companion", width / 2, 15, 0xFFFFFF);
+
+        // Pre-wrap all lines first so we know total height
+        int lineHeight = 11;
+        List<OrderedText> allWrapped = new ArrayList<>();
+        for (String dl : displayLines()) {
+            allWrapped.addAll(textRenderer.wrapLines(Text.literal(dl), 290));
+        }
+
+        int chatAreaHeight = height - 65;
+        int maxLines = chatAreaHeight / lineHeight;
+        int totalLines = allWrapped.size();
+
+        int startIdx = Math.max(0, totalLines - maxLines - scrollOffset);
+        int endIdx = Math.min(totalLines, startIdx + maxLines);
+
+        int y = 25;
+        for (int i = startIdx; i < endIdx; i++) {
+            context.drawTextWithShadow(textRenderer, allWrapped.get(i), width / 2 - 148, y, 0xFFFFFF);
+            y += lineHeight;
+        }
+
+        super.render(context, mouseX, mouseY, delta);
+    }
+
+    @Override
+    public boolean mouseScrolled(double mouseX, double mouseY, double amount) {
+        scrollOffset = Math.max(0, scrollOffset - (int) amount);
+        return true;
+    }
+
+    @Override
+    public boolean shouldPause() {
+        return false;
+    }
+}

src/client/java/AiCompanion/aicompanion2_0/client/AiChatSession.java

@@ -0,0 +1,144 @@
+package AiCompanion.aicompanion2_0.client;
+
+import java.io.*;
+import java.net.HttpURLConnection;
+import java.net.URL;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.function.Consumer;
+
+public class AiChatSession {
+
+    private final String apiBaseUrl;
+    private final String apiKey;
+    private final String model;
+
+    // OpenAI-format message history: alternating user/assistant
+    private final List<String[]> history = new ArrayList<>(); // [role, content]
+    private final List<String> displayLines = new ArrayList<>();
+
+    public AiChatSession(String apiBaseUrl, String apiKey, String model) {
+        this.apiBaseUrl = apiBaseUrl;
+        this.apiKey = apiKey;
+        this.model = model;
+        displayLines.add("§7Starte eine Unterhaltung mit deinem AI-Begleiter!");
+    }
+
+    public List<String> getDisplayLines() {
+        return displayLines;
+    }
+
+    public void sendMessage(String userMessage, Consumer<String> onResponse) {
+        history.add(new String[]{"user", userMessage});
+
+        new Thread(() -> {
+            try {
+                String response = callOpenWebUI();
+                history.add(new String[]{"assistant", response});
+                onResponse.accept(response);
+            } catch (Exception e) {
+                onResponse.accept("§cFehler: " + e.getMessage());
+            }
+        }).start();
+    }
+
+    private String callOpenWebUI() throws Exception {
+        // Build messages array
+        StringBuilder messages = new StringBuilder("[");
+        for (int i = 0; i < history.size(); i++) {
+            String[] msg = history.get(i);
+            messages.append("{\"role\":\"").append(msg[0])
+                    .append("\",\"content\":\"").append(jsonEscape(msg[1]))
+                    .append("\"}");
+            if (i < history.size() - 1) messages.append(",");
+        }
+        messages.append("]");
+
+        String json = "{\"model\":\"" + jsonEscape(model) + "\",\"messages\":" + messages + ",\"stream\":false}";
+        HttpResult primary = postChatCompletion("/api/chat/completions", json);
+        if (primary.status == 200) {
+            return extractAssistantContent(primary.body);
+        }
+
+        if (primary.status >= 500 || primary.status == 404) {
+            HttpResult fallback = postChatCompletion("/v1/chat/completions", json);
+            if (fallback.status == 200) {
+                return extractAssistantContent(fallback.body);
+            }
+            return formatHttpError(fallback.status, fallback.body, "/v1/chat/completions");
+        }
+
+        return formatHttpError(primary.status, primary.body, "/api/chat/completions");
+    }
+
+    private HttpResult postChatCompletion(String path, String json) throws Exception {
+        URL url = new URL(apiBaseUrl + path);
+        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
+        conn.setRequestMethod("POST");
+        conn.setRequestProperty("Content-Type", "application/json; charset=utf-8");
+        if (apiKey != null && !apiKey.isBlank()) {
+            conn.setRequestProperty("Authorization", "Bearer " + apiKey);
+        }
+        conn.setDoOutput(true);
+
+        try (OutputStream os = conn.getOutputStream()) {
+            os.write(json.getBytes("utf-8"));
+        }
+
+        int status = conn.getResponseCode();
+        String body = readResponseBody(conn, status >= 400);
+        conn.disconnect();
+        return new HttpResult(status, body);
+    }
+
+    private String readResponseBody(HttpURLConnection conn, boolean error) throws IOException {
+        var stream = error ? conn.getErrorStream() : conn.getInputStream();
+        if (stream == null) return "";
+
+        StringBuilder resp = new StringBuilder();
+        try (BufferedReader br = new BufferedReader(new InputStreamReader(stream, "utf-8"))) {
+            String line;
+            while ((line = br.readLine()) != null) resp.append(line);
+        }
+        return resp.toString();
+    }
+
+    private String extractAssistantContent(String body) {
+        int idx = body.indexOf("\"content\":\"");
+        if (idx >= 0) {
+            int start = idx + 11;
+            int end = body.indexOf("\"", start);
+            while (end > 0 && body.charAt(end - 1) == '\\') {
+                end = body.indexOf("\"", end + 1);
+            }
+            return body.substring(start, end).replace("\\n", "\n").replace("\\\"", "\"");
+        }
+        return body;
+    }
+
+    private String formatHttpError(int status, String body, String path) {
+        if (body == null || body.isBlank()) {
+            return "Fehler: HTTP " + status + " (" + path + ")";
+        }
+        return "Fehler: HTTP " + status + " (" + path + ") - " + body;
+    }
+
+    private String jsonEscape(String value) {
+        if (value == null) return "";
+        return value.replace("\\", "\\\\")
+                .replace("\"", "\\\"")
+                .replace("\n", "\\n")
+                .replace("\r", "\\r")
+                .replace("\t", "\\t");
+    }
+
+    private static class HttpResult {
+        private final int status;
+        private final String body;
+
+        private HttpResult(int status, String body) {
+            this.status = status;
+            this.body = body;
+        }
+    }
+}

src/client/java/AiCompanion/aicompanion2_0/client/AiCompanionClient.java

@@ -0,0 +1,74 @@
+package AiCompanion.aicompanion2_0.client;
+
+import AiCompanion.aicompanion2_0.AIEntity;
+import AiCompanion.aicompanion2_0.Aicompanion2_0;
+import net.fabricmc.api.ClientModInitializer;
+import net.fabricmc.fabric.api.client.networking.v1.ClientPlayConnectionEvents;
+import net.fabricmc.fabric.api.client.rendering.v1.EntityRendererRegistry;
+import net.fabricmc.fabric.api.event.player.UseEntityCallback;
+import net.minecraft.client.MinecraftClient;
+import net.minecraft.client.render.entity.BipedEntityRenderer;
+import net.minecraft.client.render.entity.model.EntityModelLayers;
+import net.minecraft.client.render.entity.model.PlayerEntityModel;
+import net.minecraft.util.ActionResult;
+import net.minecraft.util.Identifier;
+
+public class AiCompanionClient implements ClientModInitializer {
+
+    // One session per world load, shared across all right-clicks
+    private static AiChatSession currentSession = null;
+
+    @Override
+    public void onInitializeClient() {
+        // Register renderer
+        EntityRendererRegistry.register(Aicompanion2_0.AI_COMPANION, (context) ->
+            new BipedEntityRenderer<AIEntity, PlayerEntityModel<AIEntity>>(
+                context,
+                new PlayerEntityModel<>(context.getPart(EntityModelLayers.PLAYER), false),
+                0.5f
+            ) {
+                @Override
+                public Identifier getTexture(AIEntity entity) {
+                    return new Identifier("aicompanion2_0", "textures/entity/skin.png");
+                }
+            }
+        );
+
+        // Clear session when leaving a world
+        ClientPlayConnectionEvents.DISCONNECT.register((handler, client) -> {
+            currentSession = null;
+        });
+
+        // Open chat GUI on right-click
+        UseEntityCallback.EVENT.register((player, world, hand, entity, hitResult) -> {
+            if (world.isClient() && entity instanceof AIEntity) {
+                MinecraftClient client = MinecraftClient.getInstance();
+
+                client.execute(() -> {
+                    if (!ClientConfig.hasApiKey()) {
+                        // First time: ask for API key, then open chat
+                        client.setScreen(new ApiKeyScreen(() -> {
+                            currentSession = null; // reset so session uses new key
+                            openChatScreen(client);
+                        }));
+                    } else {
+                        openChatScreen(client);
+                    }
+                });
+                return ActionResult.SUCCESS;
+            }
+            return ActionResult.PASS;
+        });
+    }
+
+    private static void openChatScreen(MinecraftClient client) {
+        if (currentSession == null) {
+            currentSession = new AiChatSession(
+                Aicompanion2_0.getApiBaseUrl(),
+                ClientConfig.getApiKey(),
+                Aicompanion2_0.getModel()
+            );
+        }
+        client.setScreen(new AiChatScreen(currentSession));
+    }
+}

src/client/java/AiCompanion/aicompanion2_0/client/ApiKeyScreen.java

@@ -0,0 +1,70 @@
+package AiCompanion.aicompanion2_0.client;
+
+import net.minecraft.client.MinecraftClient;
+import net.minecraft.client.gui.DrawContext;
+import net.minecraft.client.gui.screen.Screen;
+import net.minecraft.client.gui.widget.ButtonWidget;
+import net.minecraft.client.gui.widget.TextFieldWidget;
+import net.minecraft.text.Text;
+
+public class ApiKeyScreen extends Screen {
+
+    private TextFieldWidget keyField;
+    private final Runnable onSuccess;
+
+    public ApiKeyScreen(Runnable onSuccess) {
+        super(Text.literal("API Key eingeben"));
+        this.onSuccess = onSuccess;
+    }
+
+    @Override
+    protected void init() {
+        keyField = new TextFieldWidget(
+            textRenderer, width / 2 - 150, height / 2 - 10, 300, 20,
+            Text.literal("API Key...")
+        );
+        keyField.setMaxLength(200);
+        keyField.setFocused(true);
+        addDrawableChild(keyField);
+
+        addDrawableChild(ButtonWidget.builder(Text.literal("Bestätigen"), btn -> confirm())
+            .dimensions(width / 2 - 75, height / 2 + 20, 150, 20)
+            .build()
+        );
+    }
+
+    @Override
+    public boolean keyPressed(int keyCode, int scanCode, int modifiers) {
+        if (keyCode == 257 || keyCode == 335) { // Enter
+            confirm();
+            return true;
+        }
+        return super.keyPressed(keyCode, scanCode, modifiers);
+    }
+
+    private void confirm() {
+        String key = keyField.getText().trim();
+        if (key.isEmpty()) return;
+
+        ClientConfig.setApiKey(key);
+        MinecraftClient.getInstance().execute(() -> {
+            close();
+            onSuccess.run();
+        });
+    }
+
+    @Override
+    public void render(DrawContext context, int mouseX, int mouseY, float delta) {
+        renderBackground(context);
+        context.drawCenteredTextWithShadow(textRenderer,
+            "§6Bitte gib deinen Open-WebUI API Key ein:", width / 2, height / 2 - 30, 0xFFFFFF);
+        context.drawCenteredTextWithShadow(textRenderer,
+            "§7(Wird lokal gespeichert, nur einmalig nötig)", width / 2, height / 2 - 20, 0xAAAAAA);
+        super.render(context, mouseX, mouseY, delta);
+    }
+
+    @Override
+    public boolean shouldPause() {
+        return false;
+    }
+}

src/client/java/AiCompanion/aicompanion2_0/client/ClientConfig.java

@@ -0,0 +1,71 @@
+package AiCompanion.aicompanion2_0.client;
+
+import java.io.*;
+import java.nio.file.*;
+import java.util.Properties;
+
+public class ClientConfig {
+
+    private static final Path CONFIG_PATH = Path.of("config", "aicompanion2_0_client.properties");
+    private static final Path SHARED_CONFIG_PATH = Path.of("config", "aicompanion2_0.properties");
+    private static String apiKey = null;
+
+    public static String getApiKey() {
+        if (apiKey == null) load();
+        return apiKey;
+    }
+
+    public static void setApiKey(String key) {
+        apiKey = key;
+        save();
+    }
+
+    public static boolean hasApiKey() {
+        if (apiKey == null) load();
+        return apiKey != null && !apiKey.isBlank();
+    }
+
+    private static void load() {
+        try {
+            // Prefer shared config so GUI and /ai frage use the same key source.
+            apiKey = loadApiKeyFrom(SHARED_CONFIG_PATH);
+            if (apiKey == null || apiKey.isBlank()) {
+                apiKey = loadApiKeyFrom(CONFIG_PATH);
+            }
+        } catch (IOException e) {
+            System.out.println("[aicompanion2_0] Konnte Client-Config nicht laden.");
+        }
+    }
+
+    private static void save() {
+        try {
+            saveApiKeyTo(CONFIG_PATH, "AI Companion Client Config");
+            saveApiKeyTo(SHARED_CONFIG_PATH, "AI Companion Shared Config");
+        } catch (IOException e) {
+            System.out.println("[aicompanion2_0] Konnte Client-Config nicht speichern.");
+        }
+    }
+
+    private static String loadApiKeyFrom(Path path) throws IOException {
+        if (!Files.exists(path)) return null;
+        Properties props = new Properties();
+        try (FileInputStream in = new FileInputStream(path.toFile())) {
+            props.load(in);
+        }
+        return props.getProperty("api.key", null);
+    }
+
+    private static void saveApiKeyTo(Path path, String comment) throws IOException {
+        Files.createDirectories(path.getParent());
+        Properties props = new Properties();
+        if (Files.exists(path)) {
+            try (FileInputStream in = new FileInputStream(path.toFile())) {
+                props.load(in);
+            }
+        }
+        props.setProperty("api.key", apiKey != null ? apiKey : "");
+        try (FileOutputStream out = new FileOutputStream(path.toFile())) {
+            props.store(out, comment);
+        }
+    }
+}

src/main/java/AiCompanion/aicompanion2_0/AIEntity.java

@@ -0,0 +1,82 @@
+package AiCompanion.aicompanion2_0;
+
+import net.minecraft.entity.EntityType;
+import net.minecraft.entity.ai.goal.*;
+import net.minecraft.entity.ai.pathing.MobNavigation;
+import net.minecraft.entity.attribute.DefaultAttributeContainer;
+import net.minecraft.entity.attribute.EntityAttributes;
+import net.minecraft.entity.damage.DamageSource;
+import net.minecraft.entity.passive.PassiveEntity;
+import net.minecraft.entity.passive.TameableEntity;
+import net.minecraft.entity.player.PlayerEntity;
+import net.minecraft.item.ItemStack;
+import net.minecraft.server.world.ServerWorld;
+import net.minecraft.text.Text;
+import net.minecraft.world.EntityView;
+import net.minecraft.world.World;
+import org.jetbrains.annotations.Nullable;
+
+public class AIEntity extends TameableEntity {
+
+    public AIEntity(EntityType<? extends TameableEntity> entityType, World world) {
+        super(entityType, world);
+        this.setInvulnerable(true);
+        this.setCustomName(Text.translatable("entity.aicompanion2_0.ai_companion"));
+        this.setCustomNameVisible(true);
+        // Ensure navigation is set up for following
+        this.navigation = new MobNavigation(this, world);
+    }
+
+    public static DefaultAttributeContainer.Builder createMobAttributes() {
+        return TameableEntity.createMobAttributes()
+            .add(EntityAttributes.GENERIC_MAX_HEALTH, 20.0)
+            .add(EntityAttributes.GENERIC_MOVEMENT_SPEED, 0.3)
+            .add(EntityAttributes.GENERIC_FOLLOW_RANGE, 32.0);
+    }
+
+    @Override
+    protected void initGoals() {
+        this.goalSelector.add(1, new FollowOwnerGoal(this, 1.0, 5.0f, 2.0f, false));
+        this.goalSelector.add(2, new WanderAroundFarGoal(this, 0.8));
+        this.goalSelector.add(3, new LookAtEntityGoal(this, PlayerEntity.class, 8.0f));
+        this.goalSelector.add(4, new LookAroundGoal(this));
+    }
+
+    @Override
+    public boolean damage(DamageSource source, float amount) {
+        // Allow kill command through, block everything else
+        if (source == this.getDamageSources().outOfWorld()) return super.damage(source, amount);
+        return false;
+    }
+
+    @Override
+    public void kill() {
+        super.kill();
+    }
+
+    @Override
+    public Text getName() {
+        return Text.translatable("entity.aicompanion2_0.ai_companion");
+    }
+
+    @Override
+    public Text getDisplayName() {
+        return Text.translatable("entity.aicompanion2_0.ai_companion");
+    }
+
+    @Override
+    public boolean isBreedingItem(ItemStack stack) {
+        return false;
+    }
+
+    @Nullable
+    @Override
+    public PassiveEntity createChild(ServerWorld world, PassiveEntity entity) {
+        return null;
+    }
+
+    // Bridge method fix
+    public EntityView method_48926() {
+        return (EntityView) this.getWorld();
+    }
+}

src/main/java/AiCompanion/aicompanion2_0/Aicompanion2_0.java

@@ -1,77 +1,136 @@
 package AiCompanion.aicompanion2_0;
 
-import net.fabricmc.api.ModInitializer;
-import net.fabricmc.fabric.api.command.v1.CommandRegistrationCallback;
-import net.minecraft.server.command.CommandManager;
-import net.minecraft.text.Text;
-import com.mojang.brigadier.arguments.StringArgumentType;
-
 import java.io.BufferedReader;
+import java.io.FileInputStream;
+import java.io.IOException;
 import java.io.InputStreamReader;
 import java.io.OutputStream;
 import java.net.HttpURLConnection;
 import java.net.URL;
-
-import java.io.FileInputStream;
-import java.io.IOException;
 import java.nio.file.Path;
+import java.nio.file.Files;
 import java.util.Properties;
 
+import com.mojang.brigadier.arguments.StringArgumentType;
+
+import net.fabricmc.api.ModInitializer;
+import net.fabricmc.fabric.api.command.v2.CommandRegistrationCallback;
+import net.fabricmc.fabric.api.object.builder.v1.entity.FabricDefaultAttributeRegistry;
+import net.fabricmc.fabric.api.object.builder.v1.entity.FabricEntityTypeBuilder;
+import net.minecraft.entity.EntityDimensions;
+import net.minecraft.entity.EntityType;
+import net.minecraft.entity.SpawnGroup;
+import net.minecraft.registry.Registries;
+import net.minecraft.registry.Registry;
+import net.minecraft.server.command.CommandManager;
+import net.minecraft.text.Text;
+import net.minecraft.util.Identifier;
 
 public class Aicompanion2_0 implements ModInitializer {
 
     public static final String MOD_ID = "aicompanion2_0";
-    private static String API_BASE_URL = "http://ollama.cametendo.org";
+    private static String API_BASE_URL = "https://ai.cametendo.org";
-    private static String API_PATH = "/api/generate";
+    private static String MODEL = "minecraft-helper";
+    private static String API_KEY = "";
+    private static String API_PATH = "/api/chat/completions";
+
+    public static final EntityType<AIEntity> AI_COMPANION = Registry.register(
+            Registries.ENTITY_TYPE,
+            new Identifier(MOD_ID, "ai_companion"),
+            FabricEntityTypeBuilder.create(SpawnGroup.CREATURE, AIEntity::new)
+                    .dimensions(EntityDimensions.fixed(0.6f, 1.8f))
+                    .build()
+    );
+
+    // Static getters used by the client side
+    public static String getApiBaseUrl() { return API_BASE_URL; }
+    public static String getModel() { return MODEL; }
 
     @Override
     public void onInitialize() {
+        loadConfig();
         System.out.println("[" + MOD_ID + "] MOD STARTET!");
 
-        CommandRegistrationCallback.EVENT.register((dispatcher, dedicated) -> {
+        FabricDefaultAttributeRegistry.register(AI_COMPANION, AIEntity.createMobAttributes());
+
+        CommandRegistrationCallback.EVENT.register((dispatcher, registryAccess, environment) -> {
             System.out.println("[" + MOD_ID + "] Registriere /ai command");
 
             dispatcher.register(
                 CommandManager.literal("ai")
+                    // /ai spawn
+                    .then(CommandManager.literal("spawn")
+                        .executes(ctx -> {
+                            var player = ctx.getSource().getPlayer();
+                            if (player != null) {
+                                AIEntity companion = new AIEntity(AI_COMPANION, player.getWorld());
+                                companion.refreshPositionAndAngles(player.getX(), player.getY(), player.getZ(), 0, 0);
+                                companion.setOwner(player);
+                                companion.setTamed(true);
+                                player.getWorld().spawnEntity(companion);
+                                player.sendMessage(Text.literal("§6[AI] §fBegleiter wurde gerufen!"), false);
+                            }
+                            return 1;
+                        })
+                    )
+                    // /ai kill
+                    .then(CommandManager.literal("kill")
+                        .executes(ctx -> {
+                            var server = ctx.getSource().getServer();
+                            int removed = 0;
+
+                            for (var world : server.getWorlds()) {
+                                var companions = world.getEntitiesByType(AI_COMPANION, entity -> true);
+                                for (var companion : companions) {
+                                    // Force-remove companion even when invulnerable.
+                                    companion.discard();
+                                    removed++;
+                                }
+                            }
+
+                            final int removedCount = removed;
+                            ctx.getSource().sendFeedback(
+                                () -> Text.literal("§6[AI] §fBegleiter entfernt: " + removedCount), false);
+                            return 1;
+                        })
+                    )
+                    // /ai frage <frage>
+                    .then(CommandManager.literal("frage")
                         .then(CommandManager.argument("frage", StringArgumentType.greedyString())
                             .executes(ctx -> {
                                 var player = ctx.getSource().getPlayer();
+                                var server = ctx.getSource().getServer();
                                 String frage = StringArgumentType.getString(ctx, "frage");
 
                                 if (player != null) {
                                     player.sendMessage(
-                                                    Text.literal("§6[AI] §fDenke nach über: " + frage),
+                                        Text.literal("§6[AI] §fDenke nach über: " + frage), false);
-                                                    false
-                                            );
                                 }
 
-                                        // KI‑Request in neuem Thread, damit der Server nicht hängt
                                 new Thread(() -> {
                                     try {
                                         String antwort = callOllama(frage);
-                                                if (antwort == null || antwort.isEmpty()) {
+                                        if (antwort == null || antwort.isEmpty()) return;
-                                                    return;
+                                        if (antwort.length() > 2000) antwort = antwort.substring(0, 2000) + "...";
-                                                }
-
-                                                // Antwort etwas kürzen, damit der Chat nicht explodiert
-                                                if (antwort.length() > 2000) {
-                                                    antwort = antwort.substring(0, 2000) + "...";
-                                                }
-
                                         if (player != null) {
-                                                    player.sendMessage(
+                                            String finalAntwort = antwort;
-                                                            Text.literal("§6[AI] §fAntwort: " + antwort),
+                                            server.execute(() -> player.sendMessage(
-                                                            false
+                                                Text.literal("§6[AI] §fAntwort: " + finalAntwort), false));
-                                                    );
                                         }
                                     } catch (Exception e) {
                                         e.printStackTrace();
+                                        if (player != null) {
+                                            String error = e.getMessage() != null ? e.getMessage() : e.getClass().getSimpleName();
+                                            server.execute(() -> player.sendMessage(
+                                                Text.literal("§c[AI] Fehler bei /ai frage: " + error), false));
+                                        }
                                     }
                                 }).start();
 
                                 return 1;
                             })
                         )
+                    )
             );
         });
 
@@ -81,46 +140,94 @@ public class Aicompanion2_0 implements ModInitializer {
     // Innerhalb deiner Klasse Aicompanion2_0
 
     private String callOllama(String prompt) throws Exception {
-        URL url = new URL(API_BASE_URL + API_PATH);
+        String json = "{\"model\":\"" + jsonEscape(MODEL) + "\",\"messages\":[{\"role\":\"user\",\"content\":\""
+            + jsonEscape(prompt) + "\"}],\"stream\":false}";
+
+        HttpResult primary = postChatCompletion(API_PATH, json);
+        if (primary.status == 200) {
+            return extractAssistantContent(primary.body);
+        }
+
+        // Some deployments expose OpenAI-compatible chat under /v1/chat/completions.
+        if ((primary.status >= 500 || primary.status == 404) && !"/v1/chat/completions".equals(API_PATH)) {
+            HttpResult fallback = postChatCompletion("/v1/chat/completions", json);
+            if (fallback.status == 200) {
+                return extractAssistantContent(fallback.body);
+            }
+            return formatHttpError(fallback.status, fallback.body, "/v1/chat/completions");
+        }
+
+        return formatHttpError(primary.status, primary.body, API_PATH);
+    }
+
+    private HttpResult postChatCompletion(String path, String json) throws Exception {
+        URL url = new URL(API_BASE_URL + path);
         HttpURLConnection conn = (HttpURLConnection) url.openConnection();
         conn.setRequestMethod("POST");
         conn.setRequestProperty("Content-Type", "application/json; charset=utf-8");
+        if (API_KEY != null && !API_KEY.isBlank()) {
+            conn.setRequestProperty("Authorization", "Bearer " + API_KEY);
+        }
         conn.setDoOutput(true);
 
-        // WICHTIG: "stream": false hinzugefügt
-        String json = """
-                {
-                "model": "gpt-oss:20b",
-                "prompt": "%s",
-                "stream": false
-                }
-                """.formatted(prompt.replace("\"", "\\\""));
-
         try (OutputStream os = conn.getOutputStream()) {
-            byte[] input = json.getBytes("utf-8");
+            os.write(json.getBytes("utf-8"));
-            os.write(input, 0, input.length);
         }
 
-        if (conn.getResponseCode() != 200) return "Fehler: " + conn.getResponseCode();
+        int status = conn.getResponseCode();
+        String body = readResponseBody(conn, status >= 400);
+        conn.disconnect();
+        return new HttpResult(status, body);
+    }
+
+    private String extractAssistantContent(String body) {
+        int idx = body.indexOf("\"content\":\"");
+        if (idx >= 0) {
+            int start = idx + 11;
+            int end = body.indexOf("\"", start);
+            while (end > 0 && body.charAt(end - 1) == '\\') end = body.indexOf("\"", end + 1);
+            return body.substring(start, end).replace("\\n", "\n").replace("\\\"", "\"");
+        }
+        return body;
+    }
+
+    private String formatHttpError(int status, String body, String path) {
+        if (body == null || body.isBlank()) {
+            return "Fehler: HTTP " + status + " (" + path + ")";
+        }
+        return "Fehler: HTTP " + status + " (" + path + ") - " + body;
+    }
+
+    private String readResponseBody(HttpURLConnection conn, boolean error) throws IOException {
+        var stream = error ? conn.getErrorStream() : conn.getInputStream();
+        if (stream == null) return "";
 
         StringBuilder resp = new StringBuilder();
-        try (BufferedReader br = new BufferedReader(new InputStreamReader(conn.getInputStream(), "utf-8"))) {
+        try (BufferedReader br = new BufferedReader(new InputStreamReader(stream, "utf-8"))) {
             String line;
-            while ((line = br.readLine()) != null) {
+            while ((line = br.readLine()) != null) resp.append(line);
-                resp.append(line);
         }
-        }
+        return resp.toString();
-        conn.disconnect();
-
-        // Primitives Parsing der Antwort (ohne externe Library)
-        String fullResponse = resp.toString();
-        if (fullResponse.contains("\"response\":\"")) {
-            int start = fullResponse.indexOf("\"response\":\"") + 12;
-            int end = fullResponse.indexOf("\"", start);
-            return fullResponse.substring(start, end);
     }
 
-        return fullResponse;
+    private String jsonEscape(String value) {
+        if (value == null) return "";
+        String escaped = value.replace("\\", "\\\\")
+            .replace("\"", "\\\"")
+            .replace("\n", "\\n")
+            .replace("\r", "\\r")
+            .replace("\t", "\\t");
+        return escaped;
+    }
+
+    private static class HttpResult {
+        private final int status;
+        private final String body;
+
+        private HttpResult(int status, String body) {
+            this.status = status;
+            this.body = body;
+        }
     }
 
     private void loadConfig() {
@@ -132,8 +239,35 @@ private void loadConfig() {
             }
             API_BASE_URL = props.getProperty("api.baseUrl", API_BASE_URL);
             API_PATH     = props.getProperty("api.path", API_PATH);
+            MODEL        = props.getProperty("api.model", MODEL);
+            API_KEY      = props.getProperty("api.key", API_KEY);
+
+            if (API_KEY == null || API_KEY.isBlank()) {
+                String clientFallbackKey = readApiKeyFrom(Path.of("config", "aicompanion2_0_client.properties"));
+                if (clientFallbackKey != null && !clientFallbackKey.isBlank()) {
+                    API_KEY = clientFallbackKey;
+                }
+            }
         } catch (IOException e) {
             System.out.println("[" + MOD_ID + "] Keine Config gefunden, benutze Default-API.");
+
+            try {
+                String clientFallbackKey = readApiKeyFrom(Path.of("config", "aicompanion2_0_client.properties"));
+                if (clientFallbackKey != null && !clientFallbackKey.isBlank()) {
+                    API_KEY = clientFallbackKey;
+                }
+            } catch (IOException ignored) {
+                // Keep defaults when no config files are available.
             }
         }
     }
+
+    private String readApiKeyFrom(Path configPath) throws IOException {
+        if (!Files.exists(configPath)) return null;
+        Properties props = new Properties();
+        try (FileInputStream in = new FileInputStream(configPath.toFile())) {
+            props.load(in);
+        }
+        return props.getProperty("api.key", null);
+    }
+}

src/main/resources/aicompanion2_0.mixins.json

@@ -0,0 +1,10 @@
+{
+  "required": true,
+  "minVersion": "0.8",
+  "package": "AiCompanion.aicompanion2_0.mixin",
+  "compatibilityLevel": "JAVA_17",
+  "mixins": [],
+  "injectors": {
+    "defaultRequire": 1
+  }
+}

src/main/resources/assets/aicompanion2_0/lang/de_de.json

@@ -0,0 +1 @@
+{"entity.aicompanion2_0.ai_companion": "KI-Begleiter"}

src/main/resources/assets/aicompanion2_0/lang/en_us.json

@@ -0,0 +1 @@
+{"entity.aicompanion2_0.ai_companion": "AI-Companion"}

src/main/resources/fabric.mod.json

@@ -12,9 +12,14 @@
   "entrypoints": {
     "main": [
       "AiCompanion.aicompanion2_0.Aicompanion2_0"
+    ],
+    "client": [
+      "AiCompanion.aicompanion2_0.client.AiCompanionClient"
     ]
   },
-  "mixins": [],
+  "mixins": [
+    "aicompanion2_0.mixins.json"
+  ],
   "depends": {
     "fabricloader": ">=0.14.0",
     "fabric-api": "*",