Improved MLG handling

- Added blacklist for scenarios where MLG wouldn't block fall damage (or fail to place)
-Water buckets now waterlog if possible
Note: This still means that any non-solid blocks like signs are treated as air and are destroyed at MLG.

TerminatorPlus-API/src/main/java/net/nuggetmc/tplus/api/agent/legacyagent/LegacyAgent.java

@@ -17,6 +17,7 @@ import net.nuggetmc.tplus.api.utils.PlayerUtils;
 import org.bukkit.*;
 import org.bukkit.block.Block;
 import org.bukkit.block.BlockFace;
+import org.bukkit.block.data.Waterlogged;
 import org.bukkit.block.data.type.*;
 import org.bukkit.entity.*;
 import org.bukkit.inventory.ItemStack;
@@ -337,26 +338,50 @@ public class LegacyAgent extends Agent {
         Material itemType;
         Material placeType;
         Sound sound;
+        Location groundLoc = null;
+        boolean nether = bot.getBukkitEntity().getWorld().getEnvironment() == World.Environment.NETHER;
+        double yPos = bot.getBukkitEntity().getLocation().getY();
 
-        if (bot.getBukkitEntity().getWorld().getEnvironment() == World.Environment.NETHER) {
+        if (nether) {
             itemType = Material.TWISTING_VINES;
             sound = Sound.BLOCK_WEEPING_VINES_PLACE;
             placeType = itemType;
+            
+            for (Block block : event.getStandingOn()) {
+            	if (LegacyMats.canPlaceTwistingVines(block)) {
+            		groundLoc = block.getLocation();
+            		break;
+            	}
+            }
         } else {
             itemType = Material.WATER_BUCKET;
             sound = Sound.ITEM_BUCKET_EMPTY;
             placeType = Material.WATER;
+            
+            for (Block block : event.getStandingOn()) {
+            	if (LegacyMats.canPlaceWater(block, yPos)) {
+            		groundLoc = block.getLocation();
+            		break;
+            	}
+            }
         }
         
-        Location loc = bot.getLocation();
+        if (groundLoc == null) return;
         
-        if (!loc.clone().add(0, -1, 0).getBlock().getType().isSolid()) return;
+        Location loc = !LegacyMats.shouldReplace(groundLoc.getBlock(), yPos, nether) ? groundLoc.add(0, 1, 0) : groundLoc;
+        boolean waterloggable = loc.getBlock().getBlockData() instanceof Waterlogged;
+        boolean waterlogged = waterloggable && ((Waterlogged)loc.getBlock().getBlockData()).isWaterlogged();
 
         event.setCancelled(true);
 
-        if (loc.getBlock().getType() != placeType) {
+        if (loc.getBlock().getType() != placeType && !waterlogged) {
             bot.punch();
-            loc.getBlock().setType(placeType);
+            if (waterloggable) {
+            	Waterlogged data = (Waterlogged)loc.getBlock().getBlockData();
+            	data.setWaterlogged(true);
+            	loc.getBlock().setBlockData(data);
+            } else
+            	loc.getBlock().setType(placeType);
             world.playSound(loc, sound, 1, 1);
 
             if (itemType == Material.WATER_BUCKET) {
@@ -365,11 +390,18 @@ public class LegacyAgent extends Agent {
                 scheduler.runTaskLater(plugin, () -> {
                     Block block = loc.getBlock();
 
-                    if (block.getType() == Material.WATER) {
+                    boolean waterloggedNow = block.getBlockData() instanceof Waterlogged
+                    	&& ((Waterlogged)block.getBlockData()).isWaterlogged();
+                    if (block.getType() == Material.WATER || waterloggedNow) {
                         bot.look(BlockFace.DOWN);
                         bot.setItem(new ItemStack(Material.WATER_BUCKET));
                         world.playSound(loc, Sound.ITEM_BUCKET_FILL, 1, 1);
-                        block.setType(Material.AIR);
+                        if (waterloggedNow) {
+                        	Waterlogged data = (Waterlogged)loc.getBlock().getBlockData();
+                        	data.setWaterlogged(false);
+                        	loc.getBlock().setBlockData(data);
+                        } else
+                        	block.setType(Material.AIR);
                     }
                 }, 5);
             }

TerminatorPlus-API/src/main/java/net/nuggetmc/tplus/api/agent/legacyagent/LegacyMats.java

@@ -1,8 +1,12 @@
 package net.nuggetmc.tplus.api.agent.legacyagent;
 
+import org.bukkit.Axis;
 import org.bukkit.Material;
+import org.bukkit.block.Block;
+import org.bukkit.block.BlockFace;
+import org.bukkit.block.data.Bisected;
+import org.bukkit.block.data.Waterlogged;
 import org.bukkit.block.data.type.*;
-
 import com.google.common.collect.Lists;
 
 import java.util.ArrayList;
@@ -286,4 +290,179 @@ public class LegacyMats {
     		&& !exclusions.contains(m) && !m.isLegacy()).toList());
     	return materials;
     }
+    
+    public static boolean canPlaceWater(Block block, double entityYPos) {
+    	if (block.getType().isSolid()) {
+    		if (block.getType() == Material.CHAIN && ((Chain)block.getBlockData()).getAxis() == Axis.Y
+    			&& !((Chain)block.getBlockData()).isWaterlogged())
+    			return false;
+    		if ((block.getType().data == Leaves.class || block.getType() == Material.MANGROVE_ROOTS
+    			|| block.getType() == Material.IRON_BARS || block.getType().name().endsWith("GLASS_PANE"))
+    			&& !((Waterlogged)block.getBlockData()).isWaterlogged())
+    			return false;
+    		if (block.getType().data == Slab.class && ((Slab)block.getBlockData()).getType() == Slab.Type.TOP
+    			&& !((Slab)block.getBlockData()).isWaterlogged())
+    			return false;
+    		if (block.getType().data == Stairs.class && ((Stairs)block.getBlockData()).getHalf() == Bisected.Half.TOP
+    			&& !((Stairs)block.getBlockData()).isWaterlogged())
+    			return false;
+    		if (block.getType().data == Stairs.class && ((Stairs)block.getBlockData()).getHalf() == Bisected.Half.BOTTOM
+    			&& !((Stairs)block.getBlockData()).isWaterlogged() && (int)entityYPos != block.getLocation().getBlockY())
+    			return false;
+    		if ((block.getType().data == Fence.class || block.getType().data == Wall.class)
+    			&& !((Waterlogged)block.getBlockData()).isWaterlogged())
+    			return false;
+    		if (block.getType() == Material.LIGHTNING_ROD && !((LightningRod)block.getBlockData()).isWaterlogged()
+    			&& (((LightningRod)block.getBlockData()).getFacing() == BlockFace.UP || ((LightningRod)block.getBlockData()).getFacing() == BlockFace.DOWN))
+    			return false;
+    		return true;
+    	} else {
+    		if (block.getType().name().endsWith("_CARPET"))
+        		return true;
+    		if (block.getType().data == Candle.class)
+    			return true;
+    		if (block.getType().name().startsWith("POTTED_"))
+    			return true;
+        	if ((block.getType().name().endsWith("_HEAD") || block.getType().name().endsWith("_SKULL"))
+        		&& !block.getType().name().equals("PISTON_HEAD"))
+        		return true;
+    		switch (block.getType()) {
+    			case SNOW:
+    			case AZALEA:
+    			case FLOWERING_AZALEA:
+    			case CHORUS_FLOWER:
+    			case CHORUS_PLANT:
+    			case COCOA:
+    			case LILY_PAD:
+    			case SEA_PICKLE:
+    			case END_ROD:
+    			case FLOWER_POT:
+    			case SCAFFOLDING:
+    				return true;
+				default:
+					break;
+    		}
+    	}
+    	return false;
+    }
+    
+    public static boolean canPlaceTwistingVines(Block block) {
+    	if (block.getType().isSolid()) {
+    		if (block.getType().data == Leaves.class)
+    			return false;
+    		if (block.getType().name().endsWith("_CORAL_FAN") || block.getType().name().endsWith("_CORAL")
+    			|| block.getType().name().endsWith("_CORAL_WALL_FAN"))
+    			return false;
+    		if (block.getType().name().endsWith("GLASS_PANE"))
+    			return false;
+    		if (block.getType().data == Slab.class && ((Slab)block.getBlockData()).getType() == Slab.Type.BOTTOM)
+    			return false;
+    		if (block.getType().data == Stairs.class && ((Stairs)block.getBlockData()).getHalf() == Bisected.Half.BOTTOM)
+    			return false;
+    		if (block.getType().data == Fence.class || block.getType().data == Wall.class)
+    			return false;
+    		if (block.getType().name().endsWith("_BANNER"))
+    			return false;
+    		if (block.getType().name().endsWith("_WALL_BANNER"))
+    			return false;
+    		if (block.getType().data == Bed.class)
+    			return false;
+    		if (block.getType().name().endsWith("CANDLE_CAKE"))
+    			return false;
+    		if (block.getType().data == Door.class)
+    			return false;
+    		if (block.getType().data == Gate.class)
+    			return false;
+    		switch (block.getType()) {
+    			case POINTED_DRIPSTONE:
+    			case SMALL_AMETHYST_BUD:
+    			case MEDIUM_AMETHYST_BUD:
+    			case LARGE_AMETHYST_BUD:
+    			case AMETHYST_CLUSTER:
+    			case BAMBOO:
+    			case CACTUS:
+    			case DRAGON_EGG:
+    			case TURTLE_EGG:
+    			case CHAIN:
+    			case IRON_BARS:
+    			case LANTERN:
+    			case SOUL_LANTERN:
+    			case ANVIL:
+    			case BREWING_STAND:
+    			case CHEST:
+    			case ENDER_CHEST:
+    			case TRAPPED_CHEST:
+    			case ENCHANTING_TABLE:
+    			case GRINDSTONE:
+    			case LECTERN:
+    			case STONECUTTER:
+    			case BELL:
+    			case CAKE:
+    			case CAMPFIRE:
+    			case SOUL_CAMPFIRE:
+    			case CAULDRON:
+    			case COMPOSTER:
+    			case CONDUIT:
+    			case END_PORTAL_FRAME:
+    			case FARMLAND:
+    			case LADDER:
+    			case DAYLIGHT_DETECTOR:
+    			case HOPPER:
+    			case LIGHTNING_ROD:
+    				return false;
+				default:
+    		}
+    		return true;
+    	} else {
+    		switch (block.getType()) {
+    			case CHORUS_FLOWER:
+    			case SCAFFOLDING:
+    			case AZALEA:
+    			case FLOWERING_AZALEA:
+    				return true;
+    			case SNOW:
+    				return ((Snow)block.getBlockData()).getLayers() == 1 || ((Snow)block.getBlockData()).getLayers() == 8;
+				default:
+    		}
+    	}
+    	return false;
+    }
+
+	public static boolean shouldReplace(Block block, double entityYPos, boolean nether) {
+		if ((int)entityYPos != block.getLocation().getBlockY())
+			return false;
+		if (nether) {
+			return false;
+		} else {
+			if (block.getType().name().endsWith("_CORAL_FAN") || block.getType().name().endsWith("_CORAL")
+    			|| block.getType().name().endsWith("_CORAL_WALL_FAN"))
+    			return true;
+			if (block.getType().data == Slab.class && ((Slab)block.getBlockData()).getType() == Slab.Type.BOTTOM)
+				return true;
+			if (block.getType().data == Stairs.class && !((Stairs)block.getBlockData()).isWaterlogged())
+				return true;
+			if (block.getType().data == Candle.class)
+				return true;
+			switch (block.getType()) {
+				case POINTED_DRIPSTONE:
+    			case SMALL_AMETHYST_BUD:
+    			case MEDIUM_AMETHYST_BUD:
+    			case LARGE_AMETHYST_BUD:
+    			case AMETHYST_CLUSTER:
+    			case SEA_PICKLE:
+    			case LANTERN:
+    			case SOUL_LANTERN:
+    			case CHEST:
+    			case ENDER_CHEST:
+    			case TRAPPED_CHEST:
+    			case CAMPFIRE:
+    			case SOUL_CAMPFIRE:
+    			case CONDUIT:
+    			case LIGHTNING_ROD:
+    				return true;
+				default:
+			}
+			return false;
+		}
+	}
 }

TerminatorPlus-API/src/main/java/net/nuggetmc/tplus/api/utils/BotUtils.java

@@ -16,9 +16,13 @@ public class BotUtils {
         Material.WATER,
         Material.LAVA,
         Material.TWISTING_VINES,
+        Material.TWISTING_VINES_PLANT,
+        Material.WEEPING_VINES,
+        Material.WEEPING_VINES_PLANT,
         Material.SWEET_BERRY_BUSH,
         Material.POWDER_SNOW,
-        Material.COBWEB
+        Material.COBWEB,
+        Material.VINE
     ));
 
     public static UUID randomSteveUUID() {

TerminatorPlus-Plugin/src/main/java/net/nuggetmc/tplus/bot/Bot.java

@@ -628,7 +628,9 @@ public class Bot extends ServerPlayer implements Terminator {
     private boolean canStandOn(Material mat) {
     	if(mat == Material.END_ROD || mat == Material.FLOWER_POT || mat == Material.REPEATER || mat == Material.COMPARATOR
     		|| mat == Material.SNOW || mat == Material.LADDER || mat == Material.VINE || mat == Material.SCAFFOLDING
-    		|| mat == Material.AZALEA || mat == Material.FLOWERING_AZALEA || mat == Material.BIG_DRIPLEAF)
+    		|| mat == Material.AZALEA || mat == Material.FLOWERING_AZALEA || mat == Material.BIG_DRIPLEAF
+    		|| mat == Material.CHORUS_FLOWER || mat == Material.CHORUS_PLANT || mat == Material.COCOA
+    		|| mat == Material.LILY_PAD || mat == Material.SEA_PICKLE)
     		return true;
     	
     	if(mat.name().endsWith("_CARPET"))