Initial commit

164plugin/build.gradle

@@ -0,0 +1,41 @@
+plugins {
+    id 'java'
+}
+
+group = 'xyz.lncvrt'
+version = '1.0.0'
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    compileOnly(files('libs/craftbukkit-1.6.4-R2.0.jar'))
+}
+
+def targetJavaVersion = 8
+java {
+    def javaVersion = JavaVersion.toVersion(targetJavaVersion)
+    sourceCompatibility = javaVersion
+    targetCompatibility = javaVersion
+    if (JavaVersion.current() < javaVersion) {
+        toolchain.languageVersion = JavaLanguageVersion.of(targetJavaVersion)
+    }
+}
+
+tasks.withType(JavaCompile).configureEach {
+    options.encoding = 'UTF-8'
+
+    if (targetJavaVersion >= 10 || JavaVersion.current().isJava10Compatible()) {
+        options.release.set(targetJavaVersion)
+    }
+}
+
+processResources {
+    def props = [version: version]
+    inputs.properties props
+    filteringCharset 'UTF-8'
+    filesMatching('plugin.yml') {
+        expand props
+    }
+}

164plugin/src/main/java/xyz/lncvrt/speedlimitplugin/SpeedLimitPlugin.java

@@ -0,0 +1,71 @@
+package xyz.lncvrt.speedlimitplugin;
+
+import org.bukkit.ChatColor;
+import org.bukkit.Location;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.Listener;
+import org.bukkit.event.player.PlayerMoveEvent;
+import org.bukkit.event.player.PlayerTeleportEvent;
+import org.bukkit.plugin.java.JavaPlugin;
+
+import java.util.Map;
+import java.util.UUID;
+import java.util.concurrent.ConcurrentHashMap;
+
+public final class SpeedLimitPlugin extends JavaPlugin implements Listener {
+    private final Map<UUID, Location> lastPos = new ConcurrentHashMap<>();
+    private final Map<UUID, Long> lastTime = new ConcurrentHashMap<>();
+    private static final double MAX_SPEED = 75.0;
+
+    @Override
+    public void onEnable() {
+        getServer().getPluginManager().registerEvents(this, this);
+    }
+
+    @EventHandler(ignoreCancelled = true)
+    public void onPlayerTeleport(PlayerTeleportEvent e) {
+        UUID id = e.getPlayer().getUniqueId();
+        Location to = e.getTo();
+        lastPos.put(id, to);
+        lastTime.put(id, System.currentTimeMillis());
+    }
+
+    @EventHandler(ignoreCancelled = true)
+    public void onPlayerMove(PlayerMoveEvent e) {
+        Location to = e.getTo();
+        Location from = e.getFrom();
+
+        UUID id = e.getPlayer().getUniqueId();
+        long now = System.currentTimeMillis();
+
+        if (!to.getWorld().equals(from.getWorld())) {
+            lastPos.put(id, to);
+            lastTime.put(id, now);
+            return;
+        }
+
+        Location lastLocation = lastPos.get(id);
+        Long lastTimestamp = lastTime.get(id);
+        if (lastLocation == null || lastTimestamp == null || !lastLocation.getWorld().equals(to.getWorld())) {
+            lastPos.put(id, to);
+            lastTime.put(id, now);
+            return;
+        }
+
+        double dist = lastLocation.distance(to);
+        double elapsed = (now - lastTimestamp) / 1000.0;
+        if (elapsed <= 0.05) elapsed = 0.05;
+
+        double speed = dist / elapsed;
+
+        if (speed > MAX_SPEED) {
+            e.setCancelled(true);
+            e.getPlayer().teleport(lastLocation);
+            e.getPlayer().sendMessage(ChatColor.RED + "You are going " + (int) speed + "BPS! Please slow down and go below " + (int) MAX_SPEED + " BPS.");
+            return;
+        }
+
+        lastPos.put(id, to);
+        lastTime.put(id, now);
+    }
+}

164plugin/src/main/resources/plugin.yml

@@ -0,0 +1,3 @@
+name: SpeedLimitPlugin
+version: '${version}'
+main: xyz.lncvrt.speedlimitplugin.SpeedLimitPlugin