package com.stalker.entity; import com.stalker.entity.ai.*; import com.stalker.network.ShapeshiftSyncPayload; import com.stalker.sound.ModSounds; import net.fabricmc.fabric.api.networking.v1.PlayerLookup; import net.fabricmc.fabric.api.networking.v1.ServerPlayNetworking; import net.minecraft.entity.*; import net.minecraft.entity.ai.goal.*; import net.minecraft.entity.attribute.DefaultAttributeContainer; import net.minecraft.entity.attribute.EntityAttributes; import net.minecraft.entity.damage.DamageSource; import net.minecraft.entity.data.DataTracker; import net.minecraft.entity.data.TrackedData; import net.minecraft.entity.data.TrackedDataHandlerRegistry; import net.minecraft.entity.mob.HostileEntity; import net.minecraft.entity.passive.*; import net.minecraft.entity.player.PlayerEntity; import net.minecraft.item.ItemStack; import net.minecraft.nbt.NbtCompound; import net.minecraft.server.network.ServerPlayerEntity; import net.minecraft.server.world.ServerWorld; import net.minecraft.sound.SoundEvent; import net.minecraft.util.math.Vec3d; import net.minecraft.world.World; import org.jetbrains.annotations.Nullable; import java.util.*; public class StalkerEntity extends HostileEntity { private static final TrackedData DISGUISE_TYPE = DataTracker.registerData( StalkerEntity.class, TrackedDataHandlerRegistry.STRING ); private static final TrackedData IS_REVEALED = DataTracker.registerData( StalkerEntity.class, TrackedDataHandlerRegistry.BOOLEAN ); private static final TrackedData DISGUISE_ENTITY_ID = DataTracker.registerData( StalkerEntity.class, TrackedDataHandlerRegistry.INTEGER ); private static final String[] ANIMAL_DISGUISES = { "cow", "sheep", "pig", "chicken", "wolf", "horse" }; private int ticksSinceLastShapeshift = 0; private int ticksSinceLastSound = 0; private int adaptationLevel = 0; private UUID targetPlayerUUID; private List mimickedChatMessages = new ArrayList<>(); private int chatMimicCooldown = 0; public StalkerEntity(EntityType entityType, World world) { super(entityType, world); this.experiencePoints = 20; } @Override protected void initGoals() { this.goalSelector.add(0, new SwimGoal(this)); this.goalSelector.add(1, new ShapeshiftGoal(this)); this.goalSelector.add(2, new AmbushGoal(this)); this.goalSelector.add(3, new StalkGoal(this, 1.0, 16.0, 32.0)); this.goalSelector.add(4, new HideGoal(this)); this.goalSelector.add(5, new WanderAroundFarGoal(this, 0.8)); this.goalSelector.add(6, new LookAroundGoal(this)); this.targetSelector.add(1, new ActiveTargetGoal<>(this, PlayerEntity.class, true)); this.targetSelector.add(2, new RevengeGoal(this)); } public static DefaultAttributeContainer.Builder createStalkerAttributes() { return HostileEntity.createHostileAttributes() .add(EntityAttributes.MAX_HEALTH, 60.0) .add(EntityAttributes.MOVEMENT_SPEED, 0.3) .add(EntityAttributes.ATTACK_DAMAGE, 8.0) .add(EntityAttributes.FOLLOW_RANGE, 64.0) .add(EntityAttributes.ARMOR, 4.0) .add(EntityAttributes.KNOCKBACK_RESISTANCE, 0.5); } @Override protected void initDataTracker(DataTracker.Builder builder) { super.initDataTracker(builder); builder.add(DISGUISE_TYPE, "none"); builder.add(IS_REVEALED, false); builder.add(DISGUISE_ENTITY_ID, -1); } @Override public void tick() { super.tick(); if (!this.getWorld().isClient()) { ticksSinceLastShapeshift++; ticksSinceLastSound++; if (chatMimicCooldown > 0) { chatMimicCooldown--; } updateAdaptationLevel(); playAtmosphericSounds(); if (isRevealed() && getTarget() == null) { setRevealed(false); } } } private void updateAdaptationLevel() { if (getTarget() instanceof PlayerEntity player) { int armorPieces = 0; for (ItemStack stack : player.getArmorItems()) { if (!stack.isEmpty()) armorPieces++; } int newLevel = armorPieces / 2; if (newLevel != adaptationLevel) { adaptationLevel = newLevel; double healthBoost = adaptationLevel * 10.0; double damageBoost = adaptationLevel * 2.0; this.getAttributeInstance(EntityAttributes.MAX_HEALTH) .setBaseValue(60.0 + healthBoost); this.getAttributeInstance(EntityAttributes.ATTACK_DAMAGE) .setBaseValue(8.0 + damageBoost); this.setHealth(this.getMaxHealth()); } } } private void playAtmosphericSounds() { if (ticksSinceLastSound >= 200 && this.random.nextFloat() < 0.1f) { Entity target = getTarget(); if (target != null && this.squaredDistanceTo(target) < 256.0) { if (!isRevealed() && !getDisguiseType().equals("none")) { this.playSound(ModSounds.STALKER_WHISPER, 1.0f, 0.8f + this.random.nextFloat() * 0.4f); } else { this.playSound(ModSounds.STALKER_AMBIENT, 1.5f, 0.7f + this.random.nextFloat() * 0.3f); } ticksSinceLastSound = 0; } } } @Override public boolean tryAttack(ServerWorld world, Entity target) { boolean hit = super.tryAttack(world, target); if (hit && target instanceof LivingEntity livingTarget) { Vec3d stalkerPos = this.getPos(); Vec3d targetPos = livingTarget.getPos(); Vec3d targetLook = livingTarget.getRotationVec(1.0f); Vec3d toStalker = stalkerPos.subtract(targetPos).normalize(); double dotProduct = targetLook.dotProduct(toStalker); if (dotProduct < -0.5) { float backstabDamage = 6.0f + (adaptationLevel * 2.0f); livingTarget.damage(world, world.getDamageSources().mobAttack(this), backstabDamage); this.playSound(ModSounds.STALKER_ATTACK, 1.0f, 1.0f); } reveal(); } return hit; } @Override public boolean damage(ServerWorld world, DamageSource source, float amount) { reveal(); return super.damage(world, source, amount); } public void reveal() { if (!isRevealed()) { setRevealed(true); setDisguiseType("none"); this.playSound(ModSounds.STALKER_REVEAL, 2.0f, 0.8f); this.getAttributeInstance(EntityAttributes.MOVEMENT_SPEED).setBaseValue(0.35); } } public String getDisguiseType() { return this.dataTracker.get(DISGUISE_TYPE); } public void setDisguiseType(String disguise) { this.dataTracker.set(DISGUISE_TYPE, disguise); if (!this.getWorld().isClient()) { for (ServerPlayerEntity player : PlayerLookup.tracking(this)) { ServerPlayNetworking.send(player, new ShapeshiftSyncPayload( this.getId(), disguise, isRevealed() )); } } } public boolean isRevealed() { return this.dataTracker.get(IS_REVEALED); } public void setRevealed(boolean revealed) { this.dataTracker.set(IS_REVEALED, revealed); } public boolean canShapeshift() { return ticksSinceLastShapeshift >= 600 && !isRevealed(); } public void performShapeshift() { String newDisguise = ANIMAL_DISGUISES[this.random.nextInt(ANIMAL_DISGUISES.length)]; setDisguiseType(newDisguise); ticksSinceLastShapeshift = 0; this.playSound(ModSounds.STALKER_SHAPESHIFT, 1.0f, 1.0f); } public void addMimickedChat(String message) { if (mimickedChatMessages.size() >= 10) { mimickedChatMessages.remove(0); } mimickedChatMessages.add(message); } public void mimicPlayerChat() { if (!mimickedChatMessages.isEmpty() && chatMimicCooldown == 0 && this.random.nextFloat() < 0.3f) { String message = mimickedChatMessages.get(this.random.nextInt(mimickedChatMessages.size())); if (this.getWorld() instanceof ServerWorld serverWorld) { for (ServerPlayerEntity player : PlayerLookup.around(serverWorld, this.getPos(), 32.0)) { player.sendMessage(net.minecraft.text.Text.literal(" " + message), false); } } chatMimicCooldown = 600; this.playSound(ModSounds.STALKER_WHISPER, 0.5f, 0.5f); } } public int getAdaptationLevel() { return adaptationLevel; } @Override public void writeCustomDataToNbt(NbtCompound nbt) { super.writeCustomDataToNbt(nbt); nbt.putString("DisguiseType", getDisguiseType()); nbt.putBoolean("IsRevealed", isRevealed()); nbt.putInt("AdaptationLevel", adaptationLevel); nbt.putInt("TicksSinceShapeshift", ticksSinceLastShapeshift); if (targetPlayerUUID != null) { nbt.putUuid("TargetPlayer", targetPlayerUUID); } if (!mimickedChatMessages.isEmpty()) { NbtCompound chatNbt = new NbtCompound(); for (int i = 0; i < mimickedChatMessages.size(); i++) { chatNbt.putString("msg" + i, mimickedChatMessages.get(i)); } nbt.put("MimickedChats", chatNbt); } } @Override public void readCustomDataFromNbt(NbtCompound nbt) { super.readCustomDataFromNbt(nbt); if (nbt.contains("DisguiseType")) { setDisguiseType(nbt.getString("DisguiseType")); } if (nbt.contains("IsRevealed")) { setRevealed(nbt.getBoolean("IsRevealed")); } if (nbt.contains("AdaptationLevel")) { adaptationLevel = nbt.getInt("AdaptationLevel"); } if (nbt.contains("TicksSinceShapeshift")) { ticksSinceLastShapeshift = nbt.getInt("TicksSinceShapeshift"); } if (nbt.containsUuid("TargetPlayer")) { targetPlayerUUID = nbt.getUuid("TargetPlayer"); } if (nbt.contains("MimickedChats")) { NbtCompound chatNbt = nbt.getCompound("MimickedChats"); mimickedChatMessages.clear(); for (String key : chatNbt.getKeys()) { mimickedChatMessages.add(chatNbt.getString(key)); } } } @Nullable @Override protected SoundEvent getAmbientSound() { return isRevealed() ? ModSounds.STALKER_AMBIENT : null; } @Nullable @Override protected SoundEvent getHurtSound(DamageSource source) { return ModSounds.STALKER_HURT; } @Nullable @Override protected SoundEvent getDeathSound() { return ModSounds.STALKER_DEATH; } @Override protected float getSoundVolume() { return 1.5f; } }