src/main/java/com/irtimaled/bbor/client/interop/SpawnableBlocksHelper.java

   1 package com.irtimaled.bbor.client.interop;
   2
   3 import com.irtimaled.bbor.common.models.Coords;
   4 import net.minecraft.block.Block;
   5 import net.minecraft.block.state.IBlockState;
   6 import net.minecraft.client.Minecraft;
   7 import net.minecraft.entity.EnumCreatureType;
   8 import net.minecraft.init.Blocks;
   9 import net.minecraft.tags.BlockTags;
  10 import net.minecraft.util.EnumFacing;
  11 import net.minecraft.util.math.BlockPos;
  12 import net.minecraft.world.EnumLightType;
  13 import net.minecraft.world.World;
  14 import net.minecraft.world.biome.Biome;
  15
  16 public class SpawnableBlocksHelper {
  17     public static void findSpawnableBlocks(Coords coords, int width, int height, BlockProcessor blockProcessor) {
  18         int blockX = coords.getX();
  19         int minX = blockX - width;
  20         int maxX = blockX + width + 1;
  21
  22         int blockZ = coords.getZ();
  23         int minZ = blockZ - width;
  24         int maxZ = blockZ + width + 1;
  25
  26         int blockY = coords.getY();
  27         int minY = Math.max(1, blockY - height);
  28         int maxY = Math.min(255, blockY + height);
  29
  30         World world = Minecraft.getInstance().world;
  31         for (int x = minX; x < maxX; x++) {
  32             for (int z = minZ; z < maxZ; z++) {
  33                 if (isBiomeHostileSpawnProof(world, new BlockPos(x, 1, z))) continue;
  34
  35                 IBlockState upperBlockState = world.getBlockState(new BlockPos(x, minY - 1, z));
  36                 for (int y = Math.max(1, minY); y < maxY; y++) {
  37                     IBlockState spawnBlockState = upperBlockState;
  38                     BlockPos pos = new BlockPos(x, y, z);
  39                     upperBlockState = world.getBlockState(pos);
  40                     if (isSpawnable(world, pos, spawnBlockState, upperBlockState)) {
  41                         blockProcessor.process(x, y, z);
  42                     }
  43                 }
  44             }
  45         }
  46     }
  47
  48     static boolean isBiomeHostileSpawnProof(World world, BlockPos pos) {
  49         Biome biome = world.getBiome(pos);
  50         return biome.getSpawningChance() == 0 ||
  51                 biome.getSpawns(EnumCreatureType.MONSTER).isEmpty();
  52     }
  53
  54     static boolean isSpawnable(World world, BlockPos pos, IBlockState spawnBlockState, IBlockState upperBlockState) {
  55         Block spawnBlock = spawnBlockState.getBlock();
  56         return spawnBlock != Blocks.AIR &&
  57                 spawnBlock != Blocks.BEDROCK &&
  58                 spawnBlock != Blocks.BARRIER &&
  59                 spawnBlockState.isTopSolid() &&
  60                 !upperBlockState.isBlockNormalCube() &&
  61                 !upperBlockState.canProvidePower() &&
  62                 !upperBlockState.isIn(BlockTags.RAILS) &&
  63                 upperBlockState.getCollisionShape(world, pos).getEnd(EnumFacing.Axis.Y) <= 0 &&
  64                 upperBlockState.getFluidState().isEmpty() &&
  65                 (world.dimension.isNether() || world.getLightFor(EnumLightType.BLOCK, pos) <= 7);
  66     }
  67 }