From 4ccee91c64b006b88372bf10b9a2a8b63ccd05c7 Mon Sep 17 00:00:00 2001
From: Auxilor <william.favierparsons1@gmail.com>
Date: Wed, 16 Jun 2021 15:45:10 +0100
Subject: [PATCH] Added PlayerJumpEvent

---
 .../eco/core/events/PlayerJumpEvent.java      | 40 ++++++++++++
 .../willfp/eco/spigot/EcoSpigotPlugin.java    |  2 +
 .../eventlisteners/PlayerJumpListeners.java   | 62 +++++++++++++++++++
 3 files changed, 104 insertions(+)
 create mode 100644 eco-api/src/main/java/com/willfp/eco/core/events/PlayerJumpEvent.java
 create mode 100644 eco-core/core-plugin/src/main/java/com/willfp/eco/spigot/eventlisteners/PlayerJumpListeners.java

diff --git a/eco-api/src/main/java/com/willfp/eco/core/events/PlayerJumpEvent.java b/eco-api/src/main/java/com/willfp/eco/core/events/PlayerJumpEvent.java
new file mode 100644
index 00000000..518a77e2
--- /dev/null
+++ b/eco-api/src/main/java/com/willfp/eco/core/events/PlayerJumpEvent.java
@@ -0,0 +1,40 @@
+package com.willfp.eco.core.events;
+
+import org.bukkit.event.HandlerList;
+import org.bukkit.event.player.PlayerMoveEvent;
+import org.jetbrains.annotations.NotNull;
+
+public class PlayerJumpEvent extends PlayerMoveEvent {
+    /**
+     * Internal bukkit.
+     */
+    private static final HandlerList HANDLERS = new HandlerList();
+
+    /**
+     * Create a new PlayerJumpEvent.
+     *
+     * @param event The PlayerMoveEvent.
+     */
+    public PlayerJumpEvent(@NotNull final PlayerMoveEvent event) {
+        super(event.getPlayer(), event.getFrom(), event.getTo());
+    }
+
+    /**
+     * Internal bukkit.
+     *
+     * @return The handlers.
+     */
+    @Override
+    public @NotNull HandlerList getHandlers() {
+        return HANDLERS;
+    }
+
+    /**
+     * Internal bukkit.
+     *
+     * @return The handlers.
+     */
+    public static @NotNull HandlerList getHandlerList() {
+        return HANDLERS;
+    }
+}
diff --git a/eco-core/core-plugin/src/main/java/com/willfp/eco/spigot/EcoSpigotPlugin.java b/eco-core/core-plugin/src/main/java/com/willfp/eco/spigot/EcoSpigotPlugin.java
index 93d69690..956f559d 100644
--- a/eco-core/core-plugin/src/main/java/com/willfp/eco/spigot/EcoSpigotPlugin.java
+++ b/eco-core/core-plugin/src/main/java/com/willfp/eco/spigot/EcoSpigotPlugin.java
@@ -25,6 +25,7 @@ import com.willfp.eco.spigot.eventlisteners.ArmorListener;
 import com.willfp.eco.spigot.eventlisteners.DispenserArmorListener;
 import com.willfp.eco.spigot.eventlisteners.EntityDeathByEntityListeners;
 import com.willfp.eco.spigot.eventlisteners.NaturalExpGainListeners;
+import com.willfp.eco.spigot.eventlisteners.PlayerJumpListeners;
 import com.willfp.eco.spigot.gui.GUIListener;
 import com.willfp.eco.spigot.integrations.anticheat.AnticheatAAC;
 import com.willfp.eco.spigot.integrations.anticheat.AnticheatMatrix;
@@ -168,6 +169,7 @@ public class EcoSpigotPlugin extends EcoPlugin {
                 new DispenserArmorListener(),
                 new EntityDeathByEntityListeners(this),
                 new ShapedRecipeListener(),
+                new PlayerJumpListeners(),
                 new GUIListener(this)
         );
     }
diff --git a/eco-core/core-plugin/src/main/java/com/willfp/eco/spigot/eventlisteners/PlayerJumpListeners.java b/eco-core/core-plugin/src/main/java/com/willfp/eco/spigot/eventlisteners/PlayerJumpListeners.java
new file mode 100644
index 00000000..121db444
--- /dev/null
+++ b/eco-core/core-plugin/src/main/java/com/willfp/eco/spigot/eventlisteners/PlayerJumpListeners.java
@@ -0,0 +1,62 @@
+package com.willfp.eco.spigot.eventlisteners;
+
+import com.willfp.eco.core.events.PlayerJumpEvent;
+import com.willfp.eco.core.integrations.mcmmo.McmmoManager;
+import org.bukkit.Bukkit;
+import org.bukkit.Material;
+import org.bukkit.entity.Player;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.Listener;
+import org.bukkit.event.player.PlayerMoveEvent;
+import org.bukkit.potion.PotionEffectType;
+import org.jetbrains.annotations.NotNull;
+
+import java.text.DecimalFormat;
+import java.util.HashSet;
+import java.util.Set;
+import java.util.UUID;
+
+@SuppressWarnings("deprecation")
+public class PlayerJumpListeners implements Listener {
+    /**
+     * For jump listeners.
+     */
+    private static final Set<UUID> PREVIOUS_PLAYERS_ON_GROUND = new HashSet<>();
+
+    /**
+     * For jump listeners.
+     */
+    private static final DecimalFormat FORMAT = new DecimalFormat("0.00");
+
+    /**
+     * Called when a player jumps.
+     *
+     * @param event The event to listen for.
+     */
+    @EventHandler(ignoreCancelled = true)
+    public void onJump(@NotNull final PlayerMoveEvent event) {
+        if (McmmoManager.isFake(event)) {
+            return;
+        }
+
+        Player player = event.getPlayer();
+        if (player.getVelocity().getY() > 0) {
+            float jumpVelocity = 0.42f;
+            if (player.hasPotionEffect(PotionEffectType.JUMP)) {
+                jumpVelocity += ((float) player.getPotionEffect(PotionEffectType.JUMP).getAmplifier() + 1) * 0.1F;
+            }
+            jumpVelocity = Float.parseFloat(FORMAT.format(jumpVelocity).replace(',', '.'));
+            if (event.getPlayer().getLocation().getBlock().getType() != Material.LADDER
+                    && PREVIOUS_PLAYERS_ON_GROUND.contains(player.getUniqueId())
+                    && !player.isOnGround()
+                    && Float.compare((float) player.getVelocity().getY(), jumpVelocity) == 0) {
+                Bukkit.getPluginManager().callEvent(new PlayerJumpEvent(event));
+            }
+        }
+        if (player.isOnGround()) {
+            PREVIOUS_PLAYERS_ON_GROUND.add(player.getUniqueId());
+        } else {
+            PREVIOUS_PLAYERS_ON_GROUND.remove(player.getUniqueId());
+        }
+    }
+}