Add ObserverTracer

Add ObserverTracerListener

Signed-off-by: yoyosource <yoyosource@nidido.de>

BauSystem_Main/src/de/steamwar/bausystem/features/observer/ObserverTracer.java

@@ -0,0 +1,89 @@
+/*
+ * This file is a part of the SteamWar software.
+ *
+ * Copyright (C) 2021  SteamWar.de-Serverteam
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar.bausystem.features.observer;
+
+import lombok.experimental.UtilityClass;
+import org.bukkit.Location;
+import org.bukkit.Material;
+import org.bukkit.Particle;
+import org.bukkit.block.*;
+import org.bukkit.block.Dispenser;
+import org.bukkit.block.Hopper;
+import org.bukkit.block.data.Powerable;
+import org.bukkit.block.data.type.*;
+import org.bukkit.block.data.type.Observer;
+import org.bukkit.entity.Player;
+
+import java.util.*;
+import java.util.function.BiPredicate;
+
+@UtilityClass
+public class ObserverTracer {
+
+    private final Set<BlockFace> ALLOWED = EnumSet.of(BlockFace.NORTH, BlockFace.SOUTH, BlockFace.EAST, BlockFace.WEST, BlockFace.UP, BlockFace.DOWN);
+
+    private Set<BiPredicate<Block, BlockFace>> predicates = new HashSet<>();
+
+    static {
+        predicates.add((block, blockFace) -> {
+            if (block.getType() != Material.OBSERVER) {
+                return false;
+            }
+            Observer observer = (Observer) block.getBlockData();
+            return observer.getFacing() == blockFace.getOppositeFace();
+        });
+    }
+
+    public void trace(Player player, Block block) {
+        if (block.getType() != Material.OBSERVER) {
+            return;
+        }
+
+        Set<Location> seen = new HashSet<>();
+        List<Block> blockList = new ArrayList<>();
+        blockList.add(block);
+        while (!blockList.isEmpty()) {
+            Block b = blockList.remove(0);
+            for (BlockFace blockFace : ALLOWED) {
+                Location location = b.getLocation().add(blockFace.getModX(), blockFace.getModY(), blockFace.getModZ());
+                Block toCheck = location.getBlock();
+                if (!seen.add(location)) {
+                    continue;
+                }
+
+                for (BiPredicate<Block, BlockFace> predicate : predicates) {
+                    if (predicate.test(toCheck, blockFace)) {
+                        blockList.add(toCheck);
+                        player.spawnParticle(Particle.FLAME, location.clone().add(0, 0, 0), 1, 0, 0, 0, 0);
+                        player.spawnParticle(Particle.FLAME, location.clone().add(1, 0, 0), 1, 0, 0, 0, 0);
+                        player.spawnParticle(Particle.FLAME, location.clone().add(1, 0, 1), 1, 0, 0, 0, 0);
+                        player.spawnParticle(Particle.FLAME, location.clone().add(0, 0, 1), 1, 0, 0, 0, 0);
+                        player.spawnParticle(Particle.FLAME, location.clone().add(0, 1, 0), 1, 0, 0, 0, 0);
+                        player.spawnParticle(Particle.FLAME, location.clone().add(1, 1, 0), 1, 0, 0, 0, 0);
+                        player.spawnParticle(Particle.FLAME, location.clone().add(1, 1, 1), 1, 0, 0, 0, 0);
+                        player.spawnParticle(Particle.FLAME, location.clone().add(0, 1, 1), 1, 0, 0, 0, 0);
+                        break;
+                    }
+                }
+            }
+        }
+    }
+
+}

BauSystem_Main/src/de/steamwar/bausystem/features/observer/ObserverTracerListener.java

@@ -0,0 +1,42 @@
+/*
+ * This file is a part of the SteamWar software.
+ *
+ * Copyright (C) 2021  SteamWar.de-Serverteam
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar.bausystem.features.observer;
+
+import de.steamwar.bausystem.linkage.LinkageType;
+import de.steamwar.bausystem.linkage.Linked;
+import org.bukkit.Material;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.Listener;
+import org.bukkit.event.block.Action;
+import org.bukkit.event.player.PlayerInteractEvent;
+
+@Linked(LinkageType.LISTENER)
+public class ObserverTracerListener implements Listener {
+
+    @EventHandler
+    public void onPlayerInteract(PlayerInteractEvent event) {
+        if (event.getAction() != Action.RIGHT_CLICK_BLOCK) {
+            return;
+        }
+        if (event.getClickedBlock().getType() == Material.OBSERVER) {
+            ObserverTracer.trace(event.getPlayer(), event.getClickedBlock());
+        }
+    }
+}