Stage 12: Data storage system

src/main/java/dev/loki/survivor/SurvivorMovement.java

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+package dev.loki.survivor;
+
+import dev.loki.mdbd;
+import dev.loki.player.PlayerState;
+import org.bukkit.entity.Player;
+import org.bukkit.potion.PotionEffect;
+import org.bukkit.potion.PotionEffectType;
+
+public class SurvivorMovement {
+    private final SurvivorController controller;
+    private boolean isSprinting;
+    private boolean isExhausted;
+    private int exhaustionTicks;
+    private int exhaustionCooldownTicks;
+    private boolean isCrawling;
+
+    private static final float WALK_SPEED = 0.2f;
+    private static final float SPRINT_SPEED = 0.3f;
+    private static final float CRAWL_SPEED = 0.06f;
+    private static final int EXHAUSTION_DURATION = 60;
+    private static final int EXHAUSTION_COOLDOWN = 100;
+
+    public SurvivorMovement(SurvivorController controller) {
+        this.controller = controller;
+        this.isSprinting = false;
+        this.isExhausted = false;
+        this.isCrawling = false;
+    }
+
+    public void onSprintStart() {
+        if (isExhausted || controller.isDowned()) return;
+        isSprinting = true;
+    }
+
+    public void onSprintEnd() {
+        if (!isSprinting) return;
+        isSprinting = false;
+        if (!isExhausted && !controller.isDowned()) {
+            isExhausted = true;
+            exhaustionTicks = EXHAUSTION_DURATION;
+        }
+    }
+
+    public void tick() {
+        if (isExhausted) {
+            if (exhaustionTicks > 0) {
+                exhaustionTicks--;
+            } else {
+                exhaustionCooldownTicks = EXHAUSTION_COOLDOWN;
+                isExhausted = false;
+            }
+        } else if (exhaustionCooldownTicks > 0) {
+            exhaustionCooldownTicks--;
+        }
+
+        updateCrawlState();
+        applyEffects();
+    }
+
+    private void updateCrawlState() {
+        Player player = controller.getPlayer();
+        if (player == null) return;
+
+        boolean shouldCrawl = controller.isDowned();
+        if (shouldCrawl != isCrawling) {
+            isCrawling = shouldCrawl;
+            if (isCrawling) {
+                player.setSneaking(true);
+            } else {
+                player.setSneaking(false);
+            }
+        }
+    }
+
+    private void applyEffects() {
+        Player player = controller.getPlayer();
+        if (player == null) return;
+
+        if (isCrawling) {
+            player.addPotionEffect(new PotionEffect(PotionEffectType.SLOWNESS, 5, 2, false, false));
+        }
+    }
+
+    public float getCurrentSpeed() {
+        if (controller.isDowned()) {
+            return CRAWL_SPEED;
+        }
+        if (isExhausted) {
+            return WALK_SPEED;
+        }
+        if (isSprinting) {
+            return SPRINT_SPEED;
+        }
+        return WALK_SPEED;
+    }
+
+    public void onStateChange(PlayerState newState) {
+        if (newState == PlayerState.DOWNED) {
+            isSprinting = false;
+        }
+    }
+
+    public boolean isSprinting() {
+        return isSprinting;
+    }
+
+    public boolean isExhausted() {
+        return isExhausted;
+    }
+
+    public boolean canSprint() {
+        return !isExhausted && exhaustionCooldownTicks <= 0 && !controller.isDowned();
+    }
+
+    public double getExhaustionPercent() {
+        if (isExhausted) {
+            return (double) exhaustionTicks / EXHAUSTION_DURATION;
+        }
+        return 0;
+    }
+}