import com.sun.istack.internal.NotNull;
import org.bukkit.Bukkit;
import org.bukkit.Material;
import org.bukkit.entity.Player;
import org.bukkit.event.Cancellable;
import org.bukkit.event.EventHandler;
import org.bukkit.event.HandlerList;
import org.bukkit.event.Listener;
import org.bukkit.event.player.PlayerEvent;
import org.bukkit.event.player.PlayerJoinEvent;
import org.bukkit.event.player.PlayerMoveEvent;
import org.bukkit.event.player.PlayerQuitEvent;
import org.bukkit.event.server.PluginDisableEvent;
import org.bukkit.event.server.PluginEnableEvent;
import org.bukkit.util.Vector;
import java.util.HashMap;
import java.util.Map;
public class PlayerJumpEvent extends PlayerEvent implements Cancellable {
private static final HandlerList handlers = new HandlerList();
private boolean cancel = false;
public PlayerJumpEvent(Player player) {
super(player);
}
@Override
public HandlerList getHandlers() {
return handlers;
}
@NotNull
public static HandlerList getHandlerList() {
return handlers;
}
public boolean isCancelled() {
return this.cancel;
}
public void setCancelled(boolean cancel) {
this.cancel = cancel;
}
public static class CallJumpEvent implements Listener {
public static final Map<Player,Boolean> jumping = new HashMap<>();
public static final double jump_vel_border = 0.4;
@EventHandler
public void onJump(PlayerMoveEvent event){
Player player = event.getPlayer();
double vy = player.getVelocity().getY();
Material mat = player.getLocation().getBlock().getType();
boolean isClimbing = mat == Material.LADDER || mat == Material.VINE;
if (vy > jump_vel_border && !isClimbing && !jumping.get(player)) {
PlayerJumpEvent jumpEvent = new PlayerJumpEvent(player);
Bukkit.getServer().getPluginManager().callEvent(jumpEvent);
if (jumpEvent.isCancelled()) player.setVelocity(new Vector(player.getVelocity().getX(),0,player.getVelocity().getZ()));
jumping.replace(player,true);
} else if (player.isOnGround() && jumping.get(player)){
jumping.replace(player,false);
}
}
@EventHandler
public void onJoin(PlayerJoinEvent event){
Player player = event.getPlayer();
add(player);
}
@EventHandler
public void onQuit(PlayerQuitEvent event){
Player player = event.getPlayer();
remove(player);
}
@EventHandler
public void onEnable(PluginEnableEvent event){
for (Player player: Bukkit.getOnlinePlayers()) add(player);
}
@EventHandler
public void onDisable(PluginDisableEvent event){
jumping.clear();
}
private void remove(Player player){
if (jumping.containsKey(player)) jumping.remove(player);
}
private void add(Player player){
if (!jumping.containsKey(player)) jumping.put(player,false);
}
}
}
import org.bukkit.plugin.java.JavaPlugin;
public class PluginMain extends JavaPlugin {
@Override
public void onEnable() {
this.getServer().getPluginManager().registerEvents(new PlayerJumpEvent.CallJumpEvent());
}
@Override
public void onDisable() {
}
}
