Helvetica Volubi
113 lines
4.2 KiB
Java
113 lines
4.2 KiB
Java
package fun.bm.lophine.carpet;
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import com.mojang.logging.LogUtils;
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import net.minecraft.core.BlockPos;
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import net.minecraft.server.level.ServerLevel;
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import net.minecraft.tags.BlockTags;
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import net.minecraft.util.Mth;
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import net.minecraft.world.entity.EntitySpawnReason;
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import net.minecraft.world.entity.EntityType;
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import net.minecraft.world.entity.Mob;
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import net.minecraft.world.entity.MobCategory;
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import net.minecraft.world.level.block.Block;
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import net.minecraft.world.level.block.FenceGateBlock;
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import net.minecraft.world.level.block.state.BlockState;
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import net.minecraft.world.phys.AABB;
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import net.minecraft.world.phys.shapes.Shapes;
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import net.minecraft.world.phys.shapes.VoxelShape;
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import org.jetbrains.annotations.Nullable;
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import org.slf4j.Logger;
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import java.util.HashMap;
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import java.util.Map;
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import java.util.WeakHashMap;
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public final class LagFreeSpawningCompatHelper {
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private static final Logger LOGGER = LogUtils.getLogger();
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private static final Map<ServerLevel, Map<EntityType<?>, Mob>> PRECOOKED_MOBS = new WeakHashMap<>();
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public static boolean hasNoCollision(ServerLevel world, AABB bb) {
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int minX = Mth.floor(bb.minX);
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int minY = Mth.floor(bb.minY);
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int minZ = Mth.floor(bb.minZ);
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int maxY = Mth.ceil(bb.maxY) - 1;
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BlockPos.MutableBlockPos blockPos = new BlockPos.MutableBlockPos();
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if (bb.getXsize() <= 1.0 && bb.getZsize() <= 1.0) {
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for (int y = minY; y <= maxY; y++) {
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blockPos.set(minX, y, minZ);
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VoxelShape shape = world.getBlockState(blockPos).getCollisionShape(world, blockPos);
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if (shape != Shapes.empty()) {
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return shape != Shapes.block() && world.noCollision(bb);
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}
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}
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return true;
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}
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int maxX = Mth.ceil(bb.maxX) - 1;
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int maxZ = Mth.ceil(bb.maxZ) - 1;
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for (int y = minY; y <= maxY; y++) {
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for (int x = minX; x <= maxX; x++) {
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for (int z = minZ; z <= maxZ; z++) {
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blockPos.set(x, y, z);
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VoxelShape shape = world.getBlockState(blockPos).getCollisionShape(world, blockPos);
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if (shape != Shapes.empty()) {
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return shape != Shapes.block() && world.noCollision(bb);
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}
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}
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}
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}
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int minBelow = minY - 1;
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for (int x = minX; x <= maxX; x++) {
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for (int z = minZ; z <= maxZ; z++) {
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blockPos.set(x, minBelow, z);
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BlockState state = world.getBlockState(blockPos);
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Block block = state.getBlock();
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if (state.is(BlockTags.FENCES)
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|| state.is(BlockTags.WALLS)
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|| block instanceof FenceGateBlock && !state.getValue(FenceGateBlock.OPEN)) {
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if (x == minX || x == maxX || z == minZ || z == maxZ) {
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return world.noCollision(bb);
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}
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return false;
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}
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}
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}
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return true;
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}
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public static double limitDistanceSq(MobCategory category, double distanceSq) {
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return distanceSq > 16384.0 && category != MobCategory.CREATURE ? 0.0 : distanceSq;
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}
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public static @Nullable Mob getOrCreateMob(ServerLevel level, EntityType<?> entityType) {
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Map<EntityType<?>, Mob> cache = PRECOOKED_MOBS.computeIfAbsent(level, key -> new HashMap<>());
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Mob mob = cache.get(entityType);
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if (mob != null && !mob.isRemoved()) {
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return mob;
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}
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try {
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if (entityType.create(level, EntitySpawnReason.NATURAL) instanceof Mob created) {
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cache.put(entityType, created);
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return created;
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}
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LOGGER.warn("Can't precook non-mob entity type: {}", entityType);
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} catch (Exception exception) {
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LOGGER.warn("Failed to precook mob {}", entityType, exception);
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}
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return null;
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}
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public static void markSpawned(ServerLevel level, EntityType<?> entityType) {
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Map<EntityType<?>, Mob> cache = PRECOOKED_MOBS.get(level);
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if (cache != null) {
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cache.remove(entityType);
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}
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}
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}
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