DimDoors/StevenDimDoors/mod_pocketDim/RiftGenerator.java
SenseiKiwi 27cfd444a9 Minor Change
Added explanation of mysterious RiftGenerator condition.
2013-07-31 16:15:13 -04:00

200 lines
8.1 KiB
Java

package StevenDimDoors.mod_pocketDim;
import java.util.Random;
import net.minecraft.block.Block;
import net.minecraft.block.material.Material;
import net.minecraft.world.World;
import net.minecraft.world.chunk.IChunkProvider;
import net.minecraftforge.common.DimensionManager;
import StevenDimDoors.mod_pocketDim.helpers.dimHelper;
import StevenDimDoors.mod_pocketDim.items.itemDimDoor;
import StevenDimDoors.mod_pocketDim.world.LimboProvider;
import StevenDimDoors.mod_pocketDim.world.PocketProvider;
import cpw.mods.fml.common.IWorldGenerator;
public class RiftGenerator implements IWorldGenerator
{
public static final int MAX_GATEWAY_GENERATION_CHANCE = 10000;
public static final int MAX_CLUSTER_GENERATION_CHANCE = 10000;
private static final int CLUSTER_GROWTH_CHANCE = 80;
private static final int MAX_CLUSTER_GROWTH_CHANCE = 100;
private static final int MIN_RIFT_Y = 4;
private static final int MAX_RIFT_Y = 250;
private static final int CHUNK_LENGTH = 16;
private static final int GATEWAY_RADIUS = 4;
private static final int MAX_GATEWAY_GENERATION_ATTEMPTS = 10;
private static DDProperties properties = null;
public RiftGenerator()
{
if (properties == null)
properties = DDProperties.instance();
}
@Override
public void generate(Random random, int chunkX, int chunkZ, World world, IChunkProvider chunkGenerator, IChunkProvider chunkProvider)
{
//Don't generate rifts or gateways if the rift generation flag is disabled,
//the current world is a pocket dimension, or the world is remote.
if ((!properties.WorldRiftGenerationEnabled && !(world.provider instanceof LimboProvider)) ||
world.provider instanceof PocketProvider || world.isRemote)
{
return;
}
//This check prevents a crash related to superflat worlds not loading World 0
if (dimHelper.getWorld(0) == null)
{
return;
}
int x, y, z;
int attempts;
int blockID;
boolean valid;
LinkData link;
//Randomly decide whether to place a cluster of rifts here
if (random.nextInt(MAX_CLUSTER_GENERATION_CHANCE) < properties.ClusterGenerationChance)
{
link = null;
do
{
//Pick a random point on the surface of the chunk
x = chunkX * CHUNK_LENGTH + random.nextInt(CHUNK_LENGTH);
z = chunkZ * CHUNK_LENGTH + random.nextInt(CHUNK_LENGTH);
y = world.getHeightValue(x, z);
//If the point is within the acceptable altitude range, the block above is empty, and we're
//not building on bedrock, then generate a rift there
if (y >= MIN_RIFT_Y && y <= MAX_RIFT_Y && world.isAirBlock(x, y + 1, z) &&
world.getBlockId(x, y, z) != Block.bedrock.blockID && //<-- Stops Nether roof spawning. DO NOT REMOVE!
world.getBlockId(x, y - 1, z) != Block.bedrock.blockID &&
world.getBlockId(x, y - 2, z) != Block.bedrock.blockID)
{
//Create a link. If this is the first time, create a dungeon pocket and create a two-way link.
//Otherwise, create a one-way link and connect to the destination of the first link.
if (link == null)
{
link = new LinkData(world.provider.dimensionId, 0, x, y + 1, z, x, y + 1, z, true, random.nextInt(4));
link = dimHelper.instance.createPocket(link, true, true);
}
else
{
link = dimHelper.instance.createLink(link.locDimID, link.destDimID, x, y + 1, z, link.destXCoord, link.destYCoord, link.destZCoord);
}
}
}
//Randomly decide whether to repeat the process and add another rift to the cluster
while (random.nextInt(MAX_CLUSTER_GROWTH_CHANCE) < CLUSTER_GROWTH_CHANCE);
}
//Check if generating structures is enabled and randomly decide whether to place a Rift Gateway here.
//This only happens if a rift cluster was NOT generated.
else if (random.nextInt(MAX_GATEWAY_GENERATION_CHANCE) < properties.GatewayGenerationChance && isStructureGenerationAllowed())
{
valid = false;
x = y = z = 0; //Stop the compiler from freaking out
//Check locations for the gateway until we are satisfied or run out of attempts.
for (attempts = 0; attempts < MAX_GATEWAY_GENERATION_ATTEMPTS && !valid; attempts++)
{
//Pick a random point on the surface of the chunk and check its materials
x = chunkX * CHUNK_LENGTH + random.nextInt(CHUNK_LENGTH);
z = chunkZ * CHUNK_LENGTH + random.nextInt(CHUNK_LENGTH);
y = world.getHeightValue(x, z);
valid = checkGatewayLocation(world, x, y, z);
}
//Build the gateway if we found a valid location
if (valid)
{
//Create a two-way link between the upper block of the gateway and a pocket dimension
//That pocket dimension is where we'll start a dungeon!
link = new LinkData(world.provider.dimensionId, 0, x, y + 1, z, x, y + 1, z, true, random.nextInt(4));
link = dimHelper.instance.createPocket(link, true, true);
//If the current dimension isn't Limbo, build a Rift Gateway out of Stone Bricks
if (world.provider.dimensionId != properties.LimboDimensionID)
{
blockID = Block.stoneBrick.blockID;
//Replace some of the ground around the gateway with bricks
for (int xc = -GATEWAY_RADIUS; xc <= GATEWAY_RADIUS; xc++)
{
for (int zc= -GATEWAY_RADIUS; zc <= GATEWAY_RADIUS; zc++)
{
//Check that the block is supported by an opaque block.
//This prevents us from building over a cliff, on the peak of a mountain,
//or the surface of the ocean or a frozen lake.
if (world.isBlockOpaqueCube(x + xc, y - 2, z + zc))
{
//Randomly choose whether to place bricks or not. The math is designed so that the
//chances of placing a block decrease as we get farther from the gateway's center.
if (Math.abs(xc) + Math.abs(zc) < random.nextInt(2) + 3)
{
//Place Stone Bricks
world.setBlock(x + xc, y - 1, z + zc, blockID, 0, 3);
}
else if (Math.abs(xc) + Math.abs(zc) < random.nextInt(3) + 3)
{
//Place Cracked Stone Bricks
world.setBlock(x + xc, y - 1, z + zc, blockID, 2, 3);
}
}
}
}
//Use Chiseled Stone Bricks to top off the pillars around the door
world.setBlock(x, y + 2, z + 1, blockID, 3, 3);
world.setBlock(x, y + 2, z - 1, blockID, 3, 3);
}
else
{
//Build the gateway out of Unraveled Fabric. Since nearly all the blocks in Limbo are of
//that type, there is no point replacing the ground. Just build the tops of the columns here.
blockID = properties.LimboBlockID;
world.setBlock(x, y + 2, z + 1, blockID, 0, 3);
world.setBlock(x, y + 2, z - 1, blockID, 0, 3);
}
//Place the shiny transient door into a dungeon
itemDimDoor.placeDoorBlock(world, x, y + 1, z, 0, mod_pocketDim.transientDoor);
//Build the columns around the door
world.setBlock(x, y + 1, z - 1, blockID, 0, 3);
world.setBlock(x, y + 1, z + 1, blockID, 0, 3);
world.setBlock(x, y, z - 1, blockID, 0, 3);
world.setBlock(x, y, z + 1, blockID, 0, 3);
}
}
}
private static boolean checkGatewayLocation(World world, int x, int y, int z)
{
//Check if the point is within the acceptable altitude range, the block above that point is empty,
//and the block two levels down is opaque and has a reasonable material. Plus that we're not building
//on top of bedrock.
return (y >= MIN_RIFT_Y &&
y <= MAX_RIFT_Y &&
world.isAirBlock(x, y + 1, z) &&
world.getBlockId(x, y, z) != Block.bedrock.blockID && //<-- Stops Nether roof spawning. DO NOT REMOVE!
world.getBlockId(x, y - 1, z) != Block.bedrock.blockID &&
checkFoundationMaterial(world, x, y - 2, z));
}
private static boolean checkFoundationMaterial(World world, int x, int y, int z)
{
//We check the material and opacity to prevent generating gateways on top of trees or houses,
//or on top of strange things like tall grass, water, slabs, or torches.
//We also want to avoid generating things on top of the Nether's bedrock!
Material material = world.getBlockMaterial(x, y, z);
return (material != Material.leaves && material != Material.wood && material != Material.pumpkin
&& world.isBlockOpaqueCube(x, y, z) && world.getBlockId(x, y, z) != Block.bedrock.blockID);
}
private static boolean isStructureGenerationAllowed()
{
return DimensionManager.getWorld(0).getWorldInfo().isMapFeaturesEnabled();
}
}