cn.nukkit.block.BlockRailDetector Maven / Gradle / Ivy

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package cn.nukkit.block;

import cn.nukkit.Server;
import cn.nukkit.api.PowerNukkitOnly;
import cn.nukkit.api.Since;
import cn.nukkit.blockproperty.BlockProperties;
import cn.nukkit.entity.Entity;
import cn.nukkit.entity.item.EntityMinecartAbstract;
import cn.nukkit.level.Position;
import cn.nukkit.math.BlockFace;
import cn.nukkit.math.SimpleAxisAlignedBB;
import cn.nukkit.utils.OptionalBoolean;
import cn.nukkit.utils.RedstoneComponent;

import javax.annotation.Nonnull;
import java.util.HashSet;
import java.util.Set;

/**
 * @author CreeperFace (Nukkit Project), larryTheCoder (Minecart and Riding Project)
 * @since 2015/11/22 
 */
public class BlockRailDetector extends BlockRail {

    public static Set activeDetectors = new HashSet<>();

    static{
        if (Server.getInstance() != null) {
            Server.getInstance().getScheduler().scheduleRepeatingTask(() -> {
                for (Position pos : activeDetectors.toArray(new Position[0])) {
                    BlockRailDetector detector;
                    if (pos.getLevel().getBlock(pos) instanceof BlockRailDetector) {
                        detector = (BlockRailDetector) pos.getLevel().getBlock(pos);
                    } else {
                        activeDetectors.remove(pos);
                        return;
                    }
                    for (Entity entity : detector.level.getNearbyEntities(new SimpleAxisAlignedBB(
                            detector.getFloorX() + 0.2D,
                            detector.getFloorY(),
                            detector.getFloorZ() + 0.2D,
                            detector.getFloorX() + 0.8D,
                            detector.getFloorY() + 0.8D,
                            detector.getFloorZ() + 0.8D))) {
                        if (entity instanceof EntityMinecartAbstract) {
                            return;
                        }
                    }
                    detector.setActive(false);
                    detector.level.setBlock(detector, detector, true, true);
                    activeDetectors.remove(detector);

                    //update redstone
                    RedstoneComponent.updateAroundRedstone(detector.down());
                    if (detector.getOrientation().isAscending()) {
                        RedstoneComponent.updateAroundRedstone(detector.up());
                    }
                }
            }, 20);
        }
    }

    public BlockRailDetector() {
        this(0);
        canBePowered = true;
    }

    public BlockRailDetector(int meta) {
        super(meta);
    }

    @Override
    public int getId() {
        return DETECTOR_RAIL;
    }

    @Since("1.4.0.0-PN")
    @PowerNukkitOnly
    @Nonnull
    @Override
    public BlockProperties getProperties() {
        return ACTIVABLE_PROPERTIES;
    }

    @Override
    public String getName() {
        return "Detector Rail";
    }

    @Override
    public boolean isPowerSource() {
        return true;
    }

    @Override
    public int getWeakPower(BlockFace side) {
        return isActive() ? 15 : 0;
    }

    @Override
    public int getStrongPower(BlockFace side) {
        return isActive() ? 0 : (side == BlockFace.UP ? 15 : 0);
    }

    public void setActive() {
        if (this.isActive()){
            return;
        }
        setActive(true);
        this.level.setBlock(this, this, true, true);

        //update redstone
        RedstoneComponent.updateAroundRedstone(down());
        if (getOrientation().isAscending()) {
            RedstoneComponent.updateAroundRedstone(up());
        }
        level.updateComparatorOutputLevel(this);

        activeDetectors.add(this);
    }

    @Override
    public boolean isActive() {
        return getBooleanValue(ACTIVE);
    }

    @Since("1.4.0.0-PN")
    @PowerNukkitOnly
    @Override
    public OptionalBoolean isRailActive() {
        return OptionalBoolean.of(getBooleanValue(ACTIVE));
    }

    @Since("1.4.0.0-PN")
    @PowerNukkitOnly
    @Override
    public void setRailActive(boolean active) {
        setBooleanValue(ACTIVE, active);
    }
}