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

   1 package com.irtimaled.bbor.client.interop;
   2
   3 import com.irtimaled.bbor.client.models.BoundingBoxSpawningSphere;
   4 import com.irtimaled.bbor.common.models.Coords;
   5 import com.irtimaled.bbor.common.models.Point;
   6 import net.minecraft.block.Block;
   7 import net.minecraft.block.state.IBlockState;
   8 import net.minecraft.client.Minecraft;
   9 import net.minecraft.client.multiplayer.WorldClient;
  10 import net.minecraft.entity.EnumCreatureType;
  11 import net.minecraft.init.Blocks;
  12 import net.minecraft.tags.BlockTags;
  13 import net.minecraft.util.EnumFacing;
  14 import net.minecraft.util.math.BlockPos;
  15 import net.minecraft.world.EnumLightType;
  16 import net.minecraft.world.biome.Biome;
  17
  18 public class SpawningSphereHelper {
  19     public static int findSpawnableSpaces(Point center, Coords coords, int width, int height, BlockProcessor blockProcessor) {
  20         int blockX = coords.getX();
  21         int minX = blockX - width;
  22         int maxX = blockX + width;
  23
  24         int blockZ = coords.getZ();
  25         int minZ = blockZ - width;
  26         int maxZ = blockZ + width;
  27
  28         int blockY = coords.getY();
  29         int minY = blockY - height;
  30
  31         int centerY = (int) center.getY();
  32         int centerYby2 = 2 * centerY;
  33
  34         WorldClient world = Minecraft.getInstance().world;
  35         int processed = 0;
  36         for (int x = minX; x < maxX; x++) {
  37             for (int z = minZ; z < maxZ; z++) {
  38                 if (!isWithinCircle(x, z, center)) continue;
  39
  40                 if (!isBiomeHostileSpawnable(world, new BlockPos(x, 1, z))) continue;
  41
  42                 int bottom = centerY;
  43                 for (int y = minY; y < centerY; y++) {
  44                     if (isWithinSpawnSphere(x, y, z, center)) {
  45                         bottom = y;
  46                         break;
  47                     }
  48                 }
  49                 int top = (centerYby2 - bottom);
  50                 if (top > 255) top = 255;
  51                 if (bottom < 1) bottom = 1;
  52
  53                 IBlockState upperBlockState = world.getBlockState(new BlockPos(x, bottom - 1, z));
  54                 for (int y = Math.max(1, bottom); y < top; y++) {
  55                     IBlockState spawnBlockState = upperBlockState;
  56                     BlockPos pos = new BlockPos(x, y, z);
  57                     upperBlockState = world.getBlockState(pos);
  58                     if (isSpawnable(world, pos, spawnBlockState, upperBlockState) &&
  59                             blockProcessor.process(x, y, z)) {
  60                         processed++;
  61                     }
  62                 }
  63             }
  64         }
  65         return processed;
  66     }
  67
  68     private static boolean isWithinSpawnSphere(int x, int y, int z, Point center) {
  69         int x1 = x+1;
  70         int z1 = z+1;
  71         int y1 = y+1;
  72         int closestX = Math.abs(center.getX()-x) < Math.abs(center.getX()-x1) ? x : x1;
  73         int closestY = Math.abs(center.getY()-y) < Math.abs(center.getY()-y1) ? y : y1;
  74         int closestZ = Math.abs(center.getZ()-z) < Math.abs(center.getZ()-z1) ? z : z1;
  75         double distance = center.getDistance(new Point(closestX, closestY, closestZ));
  76         return distance <= BoundingBoxSpawningSphere.SPAWN_RADIUS && distance >= (BoundingBoxSpawningSphere.SAFE_RADIUS-1);
  77     }
  78
  79     private static boolean isWithinCircle(int x, int z, Point center) {
  80         int x1 = x+1;
  81         int z1 = z+1;
  82         int closestX = Math.abs(center.getX()-x) < Math.abs(center.getX()-x1) ? x : x1;
  83         int closestZ = Math.abs(center.getZ()-z) < Math.abs(center.getZ()-z1) ? z : z1;
  84         double distance = center.getDistance(new Point(closestX, center.getY(), closestZ));
  85         return distance <= BoundingBoxSpawningSphere.SPAWN_RADIUS;
  86     }
  87
  88     private static boolean isBiomeHostileSpawnable(WorldClient world, BlockPos pos) {
  89         Biome biome = world.getBiome(pos);
  90         return biome.getSpawningChance() > 0 &&
  91                 !biome.getSpawns(EnumCreatureType.MONSTER).isEmpty();
  92     }
  93
  94     private static boolean isSpawnable(WorldClient world, BlockPos pos, IBlockState spawnBlockState, IBlockState upperBlockState) {
  95         Block spawnBlock = spawnBlockState.getBlock();
  96         return spawnBlock != Blocks.AIR &&
  97                 spawnBlock != Blocks.BEDROCK &&
  98                 spawnBlock != Blocks.BARRIER &&
  99                 spawnBlockState.isTopSolid() &&
 100                 !upperBlockState.isBlockNormalCube() &&
 101                 !upperBlockState.canProvidePower() &&
 102                 !upperBlockState.isIn(BlockTags.RAILS) &&
 103                 upperBlockState.getCollisionShape(world, pos).getEnd(EnumFacing.Axis.Y) <= 0 &&
 104                 upperBlockState.getFluidState().isEmpty() &&
 105                 (world.dimension.isNether() || world.getLightFor(EnumLightType.BLOCK, pos) <= 7);
 106     }
 107 }