implement getUngeneratedBlock

common/src/main/java/com/dfsek/terra/TerraWorld.java

@@ -1,10 +1,17 @@
 package com.dfsek.terra;
 
+import com.dfsek.terra.api.math.vector.Location;
+import com.dfsek.terra.api.math.vector.Vector3;
 import com.dfsek.terra.api.platform.TerraPlugin;
+import com.dfsek.terra.api.platform.block.BlockData;
 import com.dfsek.terra.api.platform.generator.GeneratorWrapper;
 import com.dfsek.terra.api.platform.world.World;
+import com.dfsek.terra.api.world.palette.Palette;
 import com.dfsek.terra.biome.BiomeProvider;
+import com.dfsek.terra.biome.UserDefinedBiome;
 import com.dfsek.terra.config.base.ConfigPack;
+import com.dfsek.terra.generation.math.Sampler;
+import net.jafama.FastMath;
 
 public class TerraWorld {
     private final BiomeProvider provider;
@@ -12,6 +19,7 @@ public class TerraWorld {
     private final boolean safe;
     private final TerraProfiler profiler;
     private final World world;
+    private final BlockData air;
 
 
     public TerraWorld(World w, ConfigPack c, TerraPlugin main) {
@@ -19,6 +27,7 @@ public class TerraWorld {
         profiler = new TerraProfiler(w);
         this.provider = config.getTemplate().getProviderBuilder().build(w.getSeed());
         this.world = w;
+        air = main.getWorldHandle().createBlockData("minecraft:air");
         safe = true;
     }
 
@@ -45,4 +54,39 @@ public class TerraWorld {
     public TerraProfiler getProfiler() {
         return profiler;
     }
+
+    /**
+     * Get a block at an ungenerated location
+     *
+     * @param x X coordinate
+     * @param y Y coordinate
+     * @param z Z coordinate
+     * @return BlockData
+     */
+    public BlockData getUngeneratedBlock(int x, int y, int z) {
+        UserDefinedBiome biome = (UserDefinedBiome) provider.getBiome(x, z);
+        Palette<BlockData> palette = biome.getGenerator(world).getPalette(y);
+        Sampler sampler = config.getSamplerCache().get(world, x, z);
+        int fdX = FastMath.floorMod(x, 16);
+        int fdZ = FastMath.floorMod(z, 16);
+        double noise = sampler.sample(fdX, y, fdZ);
+        if(noise > 0) {
+            int level = 0;
+            for(int yi = world.getMaxHeight(); yi > y; yi--) {
+                if(sampler.sample(fdX, yi, fdZ) > 0) level++;
+                else level = 0;
+            }
+            return palette.get(level, x, y, z);
+        } else if(y <= biome.getConfig().getSeaLevel()) {
+            return biome.getConfig().getOceanPalette().get(biome.getConfig().getSeaLevel() - y, x, y, z);
+        } else return air;
+    }
+
+    public BlockData getUngeneratedBlock(Location l) {
+        return getUngeneratedBlock(l.getBlockX(), l.getBlockY(), l.getBlockZ());
+    }
+
+    public BlockData getUngeneratedBlock(Vector3 v) {
+        return getUngeneratedBlock(v.getBlockX(), v.getBlockY(), v.getBlockZ());
+    }
 }

platforms/bukkit/src/main/java/com/dfsek/terra/bukkit/command/command/GetBlockCommand.java

@@ -0,0 +1,44 @@
+package com.dfsek.terra.bukkit.command.command;
+
+import com.dfsek.terra.bukkit.command.WorldCommand;
+import com.dfsek.terra.bukkit.world.BukkitAdapter;
+import org.bukkit.World;
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandSender;
+import org.bukkit.entity.Player;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.Collections;
+import java.util.List;
+
+public class GetBlockCommand extends WorldCommand {
+    public GetBlockCommand(com.dfsek.terra.bukkit.command.Command parent) {
+        super(parent);
+    }
+
+    @Override
+    public boolean execute(@NotNull Player player, @NotNull Command command, @NotNull String s, @NotNull String[] strings, World world) {
+        player.sendMessage("Block: " + getMain().getWorld(BukkitAdapter.adapt(world)).getUngeneratedBlock(BukkitAdapter.adapt(player.getLocation())).getAsString());
+        return true;
+    }
+
+    @Override
+    public String getName() {
+        return "block";
+    }
+
+    @Override
+    public List<com.dfsek.terra.bukkit.command.Command> getSubCommands() {
+        return Collections.emptyList();
+    }
+
+    @Override
+    public int arguments() {
+        return 0;
+    }
+
+    @Override
+    public List<String> getTabCompletions(@NotNull CommandSender commandSender, @NotNull String s, @NotNull String[] strings) {
+        return Collections.emptyList();
+    }
+}

platforms/bukkit/src/main/java/com/dfsek/terra/bukkit/command/command/TerraCommand.java

@@ -24,6 +24,7 @@ public class TerraCommand extends Command {
             new GeometryCommand(this),
             new FixChunkCommand(this),
             new VersionCommand(this),
+            new GetBlockCommand(this),
             new PacksCommand(this));
 
     public TerraCommand(TerraPlugin main) {