common/src/main/java/me/shedaniel/lightoverlay/common/LightOverlayTicker.java

   1 package me.shedaniel.lightoverlay.common;
   2
   3 import com.google.common.base.Suppliers;
   4 import com.google.common.collect.Maps;
   5 import dev.architectury.injectables.annotations.ExpectPlatform;
   6 import it.unimi.dsi.fastutil.longs.Long2ByteMap;
   7 import it.unimi.dsi.fastutil.longs.Long2ByteOpenHashMap;
   8 import net.minecraft.client.Minecraft;
   9 import net.minecraft.client.multiplayer.ClientLevel;
  10 import net.minecraft.client.player.LocalPlayer;
  11 import net.minecraft.core.BlockPos;
  12 import net.minecraft.core.Direction;
  13 import net.minecraft.core.Holder;
  14 import net.minecraft.tags.BlockTags;
  15 import net.minecraft.util.Mth;
  16 import net.minecraft.world.entity.Entity;
  17 import net.minecraft.world.entity.EntityType;
  18 import net.minecraft.world.level.BlockGetter;
  19 import net.minecraft.world.level.Level;
  20 import net.minecraft.world.level.LightLayer;
  21 import net.minecraft.world.level.biome.Biome;
  22 import net.minecraft.world.level.block.Block;
  23 import net.minecraft.world.level.block.state.BlockState;
  24 import net.minecraft.world.level.chunk.ChunkStatus;
  25 import net.minecraft.world.level.chunk.LevelChunk;
  26 import net.minecraft.world.level.lighting.LayerLightEventListener;
  27 import net.minecraft.world.phys.shapes.CollisionContext;
  28 import net.minecraft.world.phys.shapes.VoxelShape;
  29 import org.apache.logging.log4j.LogManager;
  30 import sun.misc.Unsafe;
  31
  32 import java.lang.reflect.Field;
  33 import java.util.*;
  34 import java.util.concurrent.Executors;
  35 import java.util.concurrent.ThreadPoolExecutor;
  36 import java.util.function.Supplier;
  37
  38 public class LightOverlayTicker {
  39     private final Minecraft minecraft = Minecraft.getInstance();
  40     private long ticks = 0;
  41     private static int threadNumber = 0;
  42     private static final ThreadPoolExecutor EXECUTOR = (ThreadPoolExecutor) Executors.newFixedThreadPool(Runtime.getRuntime().availableProcessors(), r -> {
  43         Thread thread = new Thread(r, "light-overlay-" + threadNumber++);
  44         thread.setDaemon(true);
  45         return thread;
  46     });
  47     public final Set<CubicChunkPos> POS = Collections.synchronizedSet(new HashSet<>());
  48     public final Set<CubicChunkPos> CALCULATING_POS = Collections.synchronizedSet(new HashSet<>());
  49     public final Map<CubicChunkPos, Long2ByteMap> CHUNK_MAP = Maps.newConcurrentMap();
  50     private static final Supplier<EntityType<Entity>> TESTING_ENTITY_TYPE = Suppliers.memoize(() -> {
  51         // get unsafe
  52         try {
  53             Field f = Unsafe.class.getDeclaredField("theUnsafe");
  54             f.setAccessible(true);
  55             Unsafe unsafe = (Unsafe) f.get(null);
  56
  57             // instantiate entity type
  58             return (EntityType<Entity>) unsafe.allocateInstance(EntityType.class);
  59         } catch (Exception e) {
  60             throw new RuntimeException(e);
  61         }
  62     });
  63
  64     @ExpectPlatform
  65     public static void populateEntityType(EntityType<Entity> type) {
  66         throw new AssertionError();
  67     }
  68
  69     public void queueChunk(CubicChunkPos pos) {
  70         if (LightOverlay.enabled && LightOverlay.caching && !CALCULATING_POS.contains(pos)) {
  71             POS.add(pos);
  72         }
  73     }
  74
  75     public void tick(Minecraft minecraft) {
  76         while (LightOverlay.enableOverlay.consumeClick())
  77             LightOverlay.enabled = !LightOverlay.enabled;
  78
  79         try {
  80             ticks++;
  81             if (minecraft.player == null || !LightOverlay.enabled) {
  82                 POS.clear();
  83                 CALCULATING_POS.clear();
  84                 EXECUTOR.getQueue().clear();
  85                 CHUNK_MAP.clear();
  86             } else {
  87                 LocalPlayer player = minecraft.player;
  88                 ClientLevel world = minecraft.level;
  89                 CollisionContext collisionContext = CollisionContext.of(player);
  90
  91                 if (!LightOverlay.caching) {
  92                     CALCULATING_POS.clear();
  93                     POS.clear();
  94                     CHUNK_MAP.clear();
  95                     BlockPos playerPos = player.blockPosition();
  96                     assert world != null;
  97                     LayerLightEventListener block = world.getLightEngine().getLayerListener(LightLayer.BLOCK);
  98                     LayerLightEventListener sky = LightOverlay.showNumber ? null : world.getLightEngine().getLayerListener(LightLayer.SKY);
  99                     BlockPos.MutableBlockPos downPos = new BlockPos.MutableBlockPos();
 100                     Iterable<BlockPos> iterate = BlockPos.betweenClosed(playerPos.getX() - LightOverlay.reach, playerPos.getY() - LightOverlay.reach, playerPos.getZ() - LightOverlay.reach,
 101                             playerPos.getX() + LightOverlay.reach, playerPos.getY() + LightOverlay.reach, playerPos.getZ() + LightOverlay.reach);
 102                     Long2ByteMap chunkData = new Long2ByteOpenHashMap();
 103                     CHUNK_MAP.put(new CubicChunkPos(0, 0, 0), chunkData);
 104                     for (BlockPos blockPos : iterate) {
 105                         downPos.set(blockPos.getX(), blockPos.getY() - 1, blockPos.getZ());
 106                         if (LightOverlay.showNumber) {
 107                             int level = getCrossLevel(blockPos, downPos, world, block, collisionContext);
 108                             if (level >= 0) {
 109                                 chunkData.put(blockPos.asLong(), (byte) level);
 110                             }
 111                         } else {
 112                             Holder<Biome> biome = !LightOverlay.mushroom ? world.getBiome(blockPos) : null;
 113                             byte type = getCrossType(blockPos, biome, downPos, world, block, sky, collisionContext);
 114                             if (type != LightOverlay.CROSS_NONE) {
 115                                 chunkData.put(blockPos.asLong(), type);
 116                             }
 117                         }
 118                     }
 119                 } else {
 120                     assert Minecraft.getInstance().level != null;
 121                     var height = Mth.ceil(Minecraft.getInstance().level.getHeight() / 32.0);
 122                     var start = Math.floorDiv(Minecraft.getInstance().level.getMinBuildHeight(), 32);
 123                     int playerPosX = ((int) player.getX()) >> 4;
 124                     int playerPosY = ((int) player.getY()) >> 5;
 125                     int playerPosZ = ((int) player.getZ()) >> 4;
 126                     var chunkRange = LightOverlay.getChunkRange();
 127                     for (int chunkX = playerPosX - chunkRange; chunkX <= playerPosX + chunkRange; chunkX++) {
 128                         for (int chunkY = Math.max(playerPosY - Math.max(1, chunkRange >> 1), start); chunkY <= playerPosY + Math.max(1, chunkRange >> 1) && chunkY <= start + height; chunkY++) {
 129                             for (int chunkZ = playerPosZ - chunkRange; chunkZ <= playerPosZ + chunkRange; chunkZ++) {
 130                                 if (Mth.abs(chunkX - playerPosX) > chunkRange || Mth.abs(chunkY - playerPosY) > chunkRange || Mth.abs(chunkZ - playerPosZ) > chunkRange)
 131                                     continue;
 132                                 CubicChunkPos chunkPos = new CubicChunkPos(chunkX, chunkY, chunkZ);
 133                                 if (!CHUNK_MAP.containsKey(chunkPos))
 134                                     queueChunk(chunkPos);
 135                             }
 136                         }
 137                     }
 138                     for (int p = 0; p < 3; p++) {
 139                         if (EXECUTOR.getQueue().size() >= Runtime.getRuntime().availableProcessors()) break;
 140                         double d1 = Double.MAX_VALUE, d2 = Double.MAX_VALUE, d3 = Double.MAX_VALUE;
 141                         CubicChunkPos c1 = null, c2 = null, c3 = null;
 142                         synchronized (POS) {
 143                             Iterator<CubicChunkPos> iterator = POS.iterator();
 144                             while (iterator.hasNext()) {
 145                                 CubicChunkPos pos = iterator.next();
 146                                 if (Mth.abs(pos.x - playerPosX) > chunkRange || Mth.abs(pos.y - playerPosY) > Math.max(1, chunkRange >> 1) || Mth.abs(pos.z - playerPosZ) > chunkRange || CALCULATING_POS.contains(pos)) {
 147                                     iterator.remove();
 148                                 } else {
 149                                     if (LightOverlay.renderer.isFrustumVisible(pos.getMinBlockX(), pos.getMinBlockY(), pos.getMinBlockZ(), pos.getMaxBlockX(), pos.getMaxBlockY(), pos.getMaxBlockZ())) {
 150                                         int dx = Math.abs(pos.x - playerPosX);
 151                                         int dy = Math.abs(pos.y - playerPosY) << 1;
 152                                         int dz = Math.abs(pos.z - playerPosZ);
 153                                         double distance = Math.sqrt(dx * dx + dy * dy + dz * dz);
 154                                         if (distance < d1) {
 155                                             d3 = d2;
 156                                             d2 = d1;
 157                                             d1 = distance;
 158                                             c3 = c2;
 159                                             c2 = c1;
 160                                             c1 = pos;
 161                                         } else if (distance < d2) {
 162                                             d3 = d2;
 163                                             d2 = distance;
 164                                             c3 = c2;
 165                                             c2 = pos;
 166                                         } else if (distance < d3) {
 167                                             d3 = distance;
 168                                             c3 = pos;
 169                                         }
 170                                     }
 171                                 }
 172                             }
 173                         }
 174                         CubicChunkPos finalC1 = c1;
 175                         CubicChunkPos finalC2 = c2;
 176                         CubicChunkPos finalC3 = c3;
 177                         if (finalC1 != null) {
 178                             CALCULATING_POS.add(finalC1);
 179                             POS.remove(finalC1);
 180                             if (finalC2 != null) {
 181                                 CALCULATING_POS.add(finalC2);
 182                                 POS.remove(finalC2);
 183                                 if (finalC3 != null) {
 184                                     CALCULATING_POS.add(finalC3);
 185                                     POS.remove(finalC3);
 186                                 }
 187                             }
 188                             EXECUTOR.submit(() -> {
 189                                 int playerPosX1 = ((int) minecraft.player.getX()) >> 4;
 190                                 int playerPosY1 = ((int) minecraft.player.getY()) >> 5;
 191                                 int playerPosZ1 = ((int) minecraft.player.getZ()) >> 4;
 192                                 processChunk(finalC1, playerPosX1, playerPosY1, playerPosZ1, collisionContext);
 193                                 if (finalC2 != null) processChunk(finalC2, playerPosX1, playerPosY1, playerPosZ1, collisionContext);
 194                                 if (finalC3 != null) processChunk(finalC3, playerPosX1, playerPosY1, playerPosZ1, collisionContext);
 195                             });
 196                         }
 197                     }
 198                     if (ticks % 50 == 0) {
 199                         CHUNK_MAP.entrySet().removeIf(entry -> Mth.abs(entry.getKey().x - playerPosX) > chunkRange * 2 || Mth.abs(entry.getKey().y - playerPosY) > chunkRange * 2 || Mth.abs(entry.getKey().z - playerPosZ) > chunkRange * 2);
 200                     }
 201                 }
 202             }
 203         } catch (Throwable throwable) {
 204             LogManager.getLogger().throwing(throwable);
 205         }
 206     }
 207
 208     private void processChunk(CubicChunkPos pos, int playerPosX, int playerPosY, int playerPosZ, CollisionContext context) {
 209         CALCULATING_POS.remove(pos);
 210         int chunkRange = LightOverlay.getChunkRange();
 211         if (Mth.abs(pos.x - playerPosX) > chunkRange || Mth.abs(pos.y - playerPosY) > Math.max(1, chunkRange >> 1) || Mth.abs(pos.z - playerPosZ) > chunkRange || POS.contains(pos)) {
 212             return;
 213         }
 214         try {
 215             assert minecraft.level != null;
 216             calculateChunk(minecraft.level.getChunkSource().getChunk(pos.x, pos.z, ChunkStatus.FULL, false), minecraft.level, pos, context);
 217         } catch (Throwable throwable) {
 218             LogManager.getLogger().throwing(throwable);
 219         }
 220     }
 221
 222     private void calculateChunk(LevelChunk chunk, Level world, CubicChunkPos chunkPos, CollisionContext collisionContext) {
 223         if (world != null && chunk != null) {
 224             Long2ByteMap chunkData = new Long2ByteOpenHashMap();
 225             LayerLightEventListener block = world.getLightEngine().getLayerListener(LightLayer.BLOCK);
 226             LayerLightEventListener sky = LightOverlay.showNumber ? null : world.getLightEngine().getLayerListener(LightLayer.SKY);
 227             for (BlockPos pos : BlockPos.betweenClosed(chunkPos.getMinBlockX(), chunkPos.getMinBlockY(), chunkPos.getMinBlockZ(), chunkPos.getMaxBlockX(), chunkPos.getMaxBlockY(), chunkPos.getMaxBlockZ())) {
 228                 BlockPos down = pos.below();
 229                 if (LightOverlay.showNumber) {
 230                     int level = getCrossLevel(pos, down, chunk, block, collisionContext);
 231                     if (level >= 0) {
 232                         chunkData.put(pos.asLong(), (byte) level);
 233                     }
 234                 } else {
 235                     Holder<Biome> biome = !LightOverlay.mushroom ? world.getBiome(pos) : null;
 236                     byte type = getCrossType(pos, biome, down, chunk, block, sky, collisionContext);
 237                     if (type != LightOverlay.CROSS_NONE) {
 238                         chunkData.put(pos.asLong(), type);
 239                     }
 240                 }
 241             }
 242             CHUNK_MAP.put(chunkPos, chunkData);
 243         } else {
 244             CHUNK_MAP.remove(chunkPos);
 245         }
 246     }
 247
 248     public byte getCrossType(BlockPos pos, Holder<Biome> biome, BlockPos down, BlockGetter world, LayerLightEventListener block, LayerLightEventListener sky, CollisionContext entityContext) {
 249         BlockState blockBelowState = world.getBlockState(down);
 250         BlockState blockUpperState = world.getBlockState(pos);
 251         VoxelShape upperCollisionShape = blockUpperState.getCollisionShape(world, pos, entityContext);
 252         if (!LightOverlay.underwater && !blockUpperState.getFluidState().isEmpty())
 253             return LightOverlay.CROSS_NONE;
 254         // Check if the outline is full
 255         if (Block.isFaceFull(upperCollisionShape, Direction.UP))
 256             return LightOverlay.CROSS_NONE;
 257         // TODO: Not to hard code no redstone
 258         if (blockUpperState.isSignalSource())
 259             return LightOverlay.CROSS_NONE;
 260         // Check if the collision has a bump
 261         if (upperCollisionShape.max(Direction.Axis.Y) > 0)
 262             return LightOverlay.CROSS_NONE;
 263         if (blockUpperState.is(BlockTags.RAILS))
 264             return LightOverlay.CROSS_NONE;
 265         // Check block state allow spawning (excludes bedrock and barriers automatically)
 266         if (!blockBelowState.isValidSpawn(world, down, TESTING_ENTITY_TYPE.get()))
 267             return LightOverlay.CROSS_NONE;
 268         if (!LightOverlay.mushroom && isMushroom(biome))
 269             return LightOverlay.CROSS_NONE;
 270         int blockLightLevel = block.getLightValue(pos);
 271         int skyLightLevel = sky.getLightValue(pos);
 272         if (blockLightLevel > LightOverlay.higherCrossLevel)
 273             return LightOverlay.CROSS_NONE;
 274         if (skyLightLevel > LightOverlay.higherCrossLevel)
 275             return LightOverlay.higherCross;
 276         return LightOverlay.lowerCrossLevel >= 0 && blockLightLevel > LightOverlay.lowerCrossLevel ?
 277                 LightOverlay.lowerCross : LightOverlay.CROSS_RED;
 278     }
 279
 280     @ExpectPlatform
 281     private static boolean isMushroom(Holder<Biome> biome) {
 282         throw new AssertionError();
 283     }
 284
 285     public static int getCrossLevel(BlockPos pos, BlockPos down, BlockGetter world, LayerLightEventListener view, CollisionContext collisionContext) {
 286         BlockState blockBelowState = world.getBlockState(down);
 287         BlockState blockUpperState = world.getBlockState(pos);
 288         VoxelShape collisionShape = blockBelowState.getCollisionShape(world, down, collisionContext);
 289         VoxelShape upperCollisionShape = blockUpperState.getCollisionShape(world, pos, collisionContext);
 290         if (!LightOverlay.underwater && !blockUpperState.getFluidState().isEmpty())
 291             return -1;
 292         if (!blockBelowState.getFluidState().isEmpty())
 293             return -1;
 294         if (blockBelowState.isAir())
 295             return -1;
 296         if (Block.isFaceFull(upperCollisionShape, Direction.DOWN))
 297             return -1;
 298         return view.getLightValue(pos);
 299     }
 300 }