+ Added Large Ravines to Australia.

% Trying to learn more about World Gen.

1 files changed, 243 insertions, 0 deletions

diff --git a/src/Java/gtPlusPlus/australia/gen/map/MapGenLargeRavine.java b/src/Java/gtPlusPlus/australia/gen/map/MapGenLargeRavine.java
new file mode 100644
index 0000000000..ef49155dad
--- /dev/null
+++ b/src/Java/gtPlusPlus/australia/gen/map/MapGenLargeRavine.java
@@ -0,0 +1,243 @@
+package gtPlusPlus.australia.gen.map;
+
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.util.Random;
+
+import gtPlusPlus.api.objects.Logger;
+import gtPlusPlus.api.objects.random.XSTR;
+import gtPlusPlus.core.lib.CORE;
+import net.minecraft.block.Block;
+import net.minecraft.util.MathHelper;
+import net.minecraft.world.World;
+import net.minecraft.world.gen.MapGenRavine;
+
+public class MapGenLargeRavine extends MapGenRavine
+{
+	private float[] field_75046_d = new float[1024];
+
+	@Override
+	protected void func_151540_a(long aSeed, int var1, int var2, Block[] aBlocksInChunkOrPassedIn, double p_151540_6_, double p_151540_8_, double p_151540_10_, float p_151540_12_, float p_151540_13_, float p_151540_14_, int p_151540_15_, int p_151540_16_, double p_151540_17_)
+	{
+		Logger.INFO("Generating Large Ravine.");
+		Random random = new XSTR(aSeed);
+		double d4 = (double)(var1 * 32 + 16);
+		double d5 = (double)(var2 * 32 + 16);
+		float f3 = 0.0F;
+		float f4 = 0.0F;
+
+		if (p_151540_16_ <= 0)
+		{
+			int j1 = this.range * 16 - 16;
+			p_151540_16_ = j1 - random.nextInt(j1 / 4);
+		}
+
+		boolean flag1 = false;
+
+		if (p_151540_15_ == -1)
+		{
+			p_151540_15_ = p_151540_16_ / 2;
+			flag1 = true;
+		}
+
+		float f5 = 1.0F;
+
+		for (int k1 = 0; k1 < 256; ++k1)
+		{
+			if (k1 == 0 || random.nextInt(3) == 0)
+			{
+				f5 = 1.0F + random.nextFloat() * random.nextFloat() * 1.0F;
+			}
+
+			this.field_75046_d[k1] = f5 * f5;
+		}
+
+		for (; p_151540_15_ < p_151540_16_; ++p_151540_15_)
+		{
+			double d12 = 3.5D + (double)(MathHelper.sin((float)p_151540_15_ * CORE.PI / (float)p_151540_16_) * p_151540_12_ * 1.0F);
+			double d6 = d12 * p_151540_17_;
+			d12 *= (double)random.nextFloat() * 0.55D + 0.75D;
+			d6 *= (double)random.nextFloat() * 0.55D + 0.75D;
+			float f6 = MathHelper.cos(p_151540_14_);
+			float f7 = MathHelper.sin(p_151540_14_);
+			p_151540_6_ += (double)(MathHelper.cos(p_151540_13_) * f6);
+			p_151540_8_ += (double)f7;
+			p_151540_10_ += (double)(MathHelper.sin(p_151540_13_) * f6);
+			p_151540_14_ *= 1.7F;
+			p_151540_14_ += f4 * 0.25F;
+			p_151540_13_ += f3 * 0.25F;
+			f4 *= 0.8F;
+			f3 *= 0.5F;
+			f4 += (random.nextFloat() - random.nextFloat()) * random.nextFloat() * 2.0F;
+			f3 += (random.nextFloat() - random.nextFloat()) * random.nextFloat() * 4.0F;
+
+			if (flag1 || random.nextInt(4) != 0)
+			{
+				double d7 = p_151540_6_ - d4;
+				double d8 = p_151540_10_ - d5;
+				double d9 = (double)(p_151540_16_ - p_151540_15_);
+				double d10 = (double)(p_151540_12_ + 2.0F + 16.0F);
+
+				if (d7 * d7 + d8 * d8 - d9 * d9 > d10 * d10)
+				{
+					return;
+				}
+
+				if (p_151540_6_ >= d4 - 16.0D - d12 * 2.0D && p_151540_10_ >= d5 - 16.0D - d12 * 2.0D && p_151540_6_ <= d4 + 16.0D + d12 * 2.0D && p_151540_10_ <= d5 + 16.0D + d12 * 2.0D)
+				{
+					int i4 = MathHelper.floor_double(p_151540_6_ - d12) - var1 * 16 - 1;
+					int l1 = MathHelper.floor_double(p_151540_6_ + d12) - var1 * 16 + 1;
+					int j4 = MathHelper.floor_double(p_151540_8_ - d6) - 1;
+					int i2 = MathHelper.floor_double(p_151540_8_ + d6) + 1;
+					int k4 = MathHelper.floor_double(p_151540_10_ - d12) - var2 * 16 - 1;
+					int j2 = MathHelper.floor_double(p_151540_10_ + d12) - var2 * 16 + 1;
+
+					if (i4 < 0)
+					{
+						i4 = 0;
+					}
+
+					if (l1 > 16)
+					{
+						l1 = 16;
+					}
+
+					if (j4 < 1)
+					{
+						j4 = 1;
+					}
+
+					if (i2 > 248)
+					{
+						i2 = 248;
+					}
+
+					if (k4 < 0)
+					{
+						k4 = 0;
+					}
+
+					if (j2 > 16)
+					{
+						j2 = 16;
+					}
+
+					boolean flag2 = false;
+					int k2;
+					int j3;
+
+					for (k2 = i4; !flag2 && k2 < l1; ++k2)
+					{
+						for (int l2 = k4; !flag2 && l2 < j2; ++l2)
+						{
+							for (int i3 = i2 + 1; !flag2 && i3 >= j4 - 1; --i3)
+							{
+								j3 = (k2 * 16 + l2) * 256 + i3;
+
+								if (i3 >= 0 && i3 < 256)
+								{
+									Block block = aBlocksInChunkOrPassedIn[j3];
+
+									if (isOceanBlock(aBlocksInChunkOrPassedIn, j3, k2, i3, l2, var1, var2))
+									{
+										flag2 = true;
+									}
+
+									if (i3 != j4 - 1 && k2 != i4 && k2 != l1 - 1 && l2 != k4 && l2 != j2 - 1)
+									{
+										i3 = j4;
+									}
+								}
+							}
+						}
+					}
+
+					if (!flag2)
+					{
+						for (k2 = i4; k2 < l1; ++k2)
+						{
+							double d13 = ((double)(k2 + var1 * 16) + 0.5D - p_151540_6_) / d12;
+
+							for (j3 = k4; j3 < j2; ++j3)
+							{
+								double d14 = ((double)(j3 + var2 * 16) + 0.5D - p_151540_10_) / d12;
+								int k3 = (k2 * 16 + j3) * 256 + i2;
+								boolean flag = false;
+
+								if (d13 * d13 + d14 * d14 < 1.0D)
+								{
+									for (int l3 = i2 - 1; l3 >= j4; --l3)
+									{
+										double d11 = ((double)l3 + 0.5D - p_151540_8_) / d6;
+
+										if ((d13 * d13 + d14 * d14) * (double)this.field_75046_d[l3] + d11 * d11 / 6.0D < 1.0D)
+										{
+											Block block1 = aBlocksInChunkOrPassedIn[k3];
+
+											if (checkIfTopBlock(aBlocksInChunkOrPassedIn, k3, k2, l3, j3, var1, var2))
+											{
+												flag = true;
+											}
+
+											digBlock(aBlocksInChunkOrPassedIn, k3, k2, l3, j3, var1, var2, flag);
+										}
+
+										--k3;
+									}
+								}
+							}
+						}
+
+						if (flag1)
+						{
+							break;
+						}
+					}
+				}
+			}
+		}
+	}
+
+
+	//generate?
+			@Override
+			protected void func_151538_a(World p_151538_1_, int p_151538_2_, int p_151538_3_, int chunkX, int chunkZ, Block[] blocks)
+	{
+		if (this.rand.nextInt(50) == 0)
+		{
+			double d0 = (double)(p_151538_2_ * 16 + this.rand.nextInt(16));
+			double d1 = (double)(this.rand.nextInt(this.rand.nextInt(40) + 8) + 20);
+			double d2 = (double)(p_151538_3_ * 16 + this.rand.nextInt(16));
+			byte b0 = 1;
+
+			for (int i1 = 0; i1 < b0; ++i1)
+			{
+				float f = this.rand.nextFloat() * (float)Math.PI * 2.0F;
+				float f1 = (this.rand.nextFloat() - 0.5F) * 2.0F / 8.0F;
+				float f2 = (this.rand.nextFloat() * 2.0F + this.rand.nextFloat()) * 2.0F;
+				this.func_151540_a(this.rand.nextLong(), chunkX, chunkZ, blocks, d0, d1, d2, f2, f, f1, 0, 0, 3.0D);
+			}
+		}
+	}
+
+	private static Method isTopBlock;
+
+	//Determine if the block at the specified location is the top block for the biome, we take into account
+	private synchronized boolean checkIfTopBlock(Block[] data, int index, int x, int y, int z, int chunkX, int chunkZ){
+		try {
+			if (isTopBlock == null) {
+				isTopBlock = MapGenRavine.class.getDeclaredMethod("isTopBlock", Block[].class, int.class, int.class, int.class, int.class, int.class, int.class);
+			}
+			if (isTopBlock != null) {
+				return (boolean) isTopBlock.invoke(this, data, index, x, y, z, chunkX, chunkZ);
+			}
+			else {
+				return false;
+			}
+		}
+		catch (NoSuchMethodException | SecurityException | IllegalAccessException | IllegalArgumentException | InvocationTargetException n) {
+			return false;
+		}
+	}
+
+}
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