Imperfect but mostly working basalt generator

Generates near lava, but has trouble with chunk boundaries
Also fixed MRock

TODO.txt

@@ -11,6 +11,9 @@ deco			No		Limestone...
 deco			No		Slate...
 							...stairs
 							...slabs
+deco			No		Basalt...
+							...stairs
+							...slabs
 -------------------------------------------------------------------------------------------------------
 plants			No?		Tomatoes
 plants			No?		Turnips
@@ -51,7 +54,7 @@ materials		No		Liquids
 -------------------------------------------------------------------------------------------------------
 materials.rock	No		Smooth limestone
 materials.rock	No		Smooth slate
-materials.rock	No		Basalt
+materials.rock	No		Smooth basalt
 -------------------------------------------------------------------------------------------------------
 materials.ore	No		Silver (native, horn silver)
 materials.ore	No		Olivine
@@ -68,9 +71,12 @@ tech.tools		No		Pan (for e.g. panning gold)
 							-> limit it per chunk
 							-> depend on chunk minerals
 -------------------------------------------------------------------------------------------------------
+tech.blackboard	???		AUGUSTIN WANTS IT!
+-------------------------------------------------------------------------------------------------------
 animals			???		Goats
 -------------------------------------------------------------------------------------------------------
 world			???		Improved system to handle neighbouring biomes                                   BF
+world.gen		???		Make basalt gen behave correctly at chunk boundaries							BF
 world			???		Volcanos
 -------------------------------------------------------------------------------------------------------
 ???				???		Sub-blocks

src/java/mmm/materials/MRock.java

@@ -1,11 +1,7 @@
 package mmm.materials;
 
 
-import java.util.List;
-
-import mmm.utils.I_UOreGenerationRegistrar;
 import mmm.utils.URegistry;
-import mmm.world.gen.WGOreCondition;
 import net.minecraft.block.Block;
 import net.minecraft.block.SoundType;
 import net.minecraft.block.material.MapColor;
@@ -16,12 +12,9 @@ import net.minecraft.creativetab.CreativeTabs;
 
 public class MRock
 		extends Block
-		implements I_MRock , I_UOreGenerationRegistrar
+		implements I_MRock
 {
 
-	private WGOreCondition[] genConditions;
-
-
 	public MRock( final String name , final MapColor mapColor )
 	{
 		this( name , mapColor , 0 , 1.5f , 10f );
@@ -47,20 +40,4 @@ public class MRock
 		URegistry.addBlock( this );
 	}
 
-
-	public MRock setConditions( final WGOreCondition... genConditions )
-	{
-		this.genConditions = genConditions.clone( );
-		return this;
-	}
-
-
-	@Override
-	public void addConditions( final List< WGOreCondition > conditions )
-	{
-		for ( int i = 0 ; i < this.genConditions.length ; i++ ) {
-			conditions.add( this.genConditions[ i ] );
-		}
-	}
-
 }

src/java/mmm/world/World.java

@@ -7,6 +7,7 @@ import mmm.utils.I_UOreGenerationRegistrar;
 import mmm.utils.URegistry;
 import mmm.world.biome.WBLimestoneMountains;
 import mmm.world.biome.WBLimestonePlateau;
+import mmm.world.gen.WGBasalt;
 import mmm.world.gen.WGOre;
 import mmm.world.gen.WGOreCondition;
 import net.minecraftforge.common.BiomeManager.BiomeType;
@@ -79,6 +80,7 @@ public class World
 			registrar.addConditions( conditions );
 		}
 		GameRegistry.registerWorldGenerator( new WGOre( conditions ) , 0 );
+		GameRegistry.registerWorldGenerator( new WGBasalt( ) , 1000 );
 	}
 
 }

src/java/mmm/world/gen/WGBasalt.java

@@ -3,6 +3,11 @@ package mmm.world.gen;
 
 import java.util.Random;
 
+import mmm.materials.Materials;
+import net.minecraft.block.state.IBlockState;
+import net.minecraft.init.Blocks;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.world.DimensionType;
 import net.minecraft.world.World;
 import net.minecraft.world.chunk.IChunkGenerator;
 import net.minecraft.world.chunk.IChunkProvider;
@@ -13,13 +18,84 @@ import net.minecraftforge.fml.common.IWorldGenerator;
 public class WGBasalt
 		implements IWorldGenerator
 {
+	private static final IBlockState BS_BASALT = Materials.ROCK_BASALT.getDefaultState( );
+
 
 	@Override
 	public void generate( final Random random , final int chunkX , final int chunkZ , final World world ,
 			final IChunkGenerator chunkGenerator , final IChunkProvider chunkProvider )
 	{
+		if ( world.provider.getDimensionType( ) != DimensionType.OVERWORLD ) {
+			return;
+		}
+
 		// TODO: prevent basalt from generating in some biomes
 
+		// Find all rock blocks that are close to some lava
+		final boolean rockNearLava[] = new boolean[ 16 * 16 * 256 ];
+		final BlockPos.MutableBlockPos mbp = new BlockPos.MutableBlockPos( );
+		for ( int x = 0 ; x < 16 ; x++ ) {
+			for ( int z = 0 ; z < 16 ; z++ ) {
+				mbp.setPos( chunkX * 16 + x , 0 , chunkZ * 16 + z );
+				for ( int y = 0 ; y < 256 ; y++ ) {
+					mbp.setY( y );
+					final IBlockState bs = world.getBlockState( mbp );
+					if ( bs.getBlock( ) != Blocks.LAVA ) {
+						continue;
+					}
+					this.scanForRocksAround( world , rockNearLava , mbp , x , y , z );
+				}
+			}
+		}
+
+		// Replace some of them with basalt
+		int offset = 0;
+		for ( int x = 0 ; x < 16 ; x++ ) {
+			for ( int z = 0 ; z < 16 ; z++ ) {
+				mbp.setPos( chunkX * 16 + x , 0 , chunkZ * 16 + z );
+				for ( int y = 0 ; y < 256 ; y++ ) {
+					if ( rockNearLava[ offset++ ] && random.nextInt( 5 ) != 4 ) {
+						mbp.setY( y );
+						world.setBlockState( mbp , WGBasalt.BS_BASALT );
+						if ( y >= 40 ) {
+							System.err.println( "BASALT at " + mbp );
+						}
+					}
+				}
+			}
+		}
+	}
+
+
+	private void scanForRocksAround( final World world , final boolean[] rockNearLava ,
+			final BlockPos.MutableBlockPos mbp , final int x , final int y , final int z )
+	{
+		final BlockPos.MutableBlockPos mbps = new BlockPos.MutableBlockPos( );
+		for ( int i = -2 ; i <= 2 ; i++ ) {
+			final int xb = x + i;
+
+			for ( int j = -2 ; j <= 2 ; j++ ) {
+				final int zb = z + j;
+
+				for ( int k = -2 ; k <= 2 ; k++ ) {
+					final int yb = y + k;
+					if ( i == 0 && j == 0 && k == 0 || xb < 0 || xb > 15 || zb < 0 || zb > 15 || yb < 0 || yb > 255 ) {
+						continue;
+					}
+
+					final int offset = ( xb * 16 + zb ) * 256 + yb;
+					if ( rockNearLava[ offset ] ) {
+						continue;
+					}
+
+					mbps.setPos( mbp.getX( ) + i , yb , mbp.getZ( ) + j );
+					// System.err.println( "pos = " + mbps );
+					if ( Materials.isRock( world.getBlockState( mbps ) ) ) {
+						rockNearLava[ offset ] = true;
+					}
+				}
+			}
+		}
 	}
 
 }