cn.nukkit.block.BlockTarget Maven / Gradle / Ivy
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A Minecraft Bedrock Edition server software implementation made in Java from scratch which supports all new features.
package cn.nukkit.block;
import cn.nukkit.api.PowerNukkitOnly;
import cn.nukkit.api.Since;
import cn.nukkit.blockentity.BlockEntity;
import cn.nukkit.blockentity.BlockEntityTarget;
import cn.nukkit.entity.Entity;
import cn.nukkit.entity.projectile.EntityArrow;
import cn.nukkit.entity.projectile.EntityThrownTrident;
import cn.nukkit.item.ItemTool;
import cn.nukkit.level.Level;
import cn.nukkit.level.MovingObjectPosition;
import cn.nukkit.level.Position;
import cn.nukkit.math.BlockFace;
import cn.nukkit.math.BlockFace.Axis;
import cn.nukkit.math.NukkitMath;
import cn.nukkit.math.Vector3;
import cn.nukkit.utils.BlockColor;
import javax.annotation.Nonnull;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
/**
* @author joserobjr
*/
@PowerNukkitOnly
@Since("1.4.0.0-PN")
public class BlockTarget extends BlockTransparent implements BlockEntityHolder {
@PowerNukkitOnly
@Since("1.4.0.0-PN")
public BlockTarget() {
// Does nothing
}
@Override
public int getId() {
return TARGET;
}
@Override
public String getName() {
return "Target";
}
@Since("1.4.0.0-PN")
@PowerNukkitOnly
@Nonnull
@Override
public Class extends BlockEntityTarget> getBlockEntityClass() {
return BlockEntityTarget.class;
}
@Since("1.4.0.0-PN")
@PowerNukkitOnly
@Nonnull
@Override
public String getBlockEntityType() {
return BlockEntity.TARGET;
}
@Override
public boolean isPowerSource() {
return true;
}
@Override
public int getWeakPower(BlockFace face) {
BlockEntityTarget target = getBlockEntity();
return target == null? 0 : target.getActivePower();
}
@PowerNukkitOnly
@Since("1.4.0.0-PN")
public boolean activatePower(int power) {
return activatePower(power, 4 * 2);
}
@PowerNukkitOnly
@Since("1.4.0.0-PN")
public boolean activatePower(int power, int ticks) {
Level level = getLevel();
if (power <= 0 || ticks <= 0) {
return deactivatePower();
}
if (!level.getServer().isRedstoneEnabled()) {
return false;
}
BlockEntityTarget target = getOrCreateBlockEntity();
int previous = target.getActivePower();
level.cancelSheduledUpdate(this, this);
level.scheduleUpdate(this, ticks);
target.setActivePower(power);
if (previous != power) {
level.updateAroundRedstone(this, null);
}
return true;
}
@PowerNukkitOnly
@Since("1.4.0.0-PN")
public boolean deactivatePower() {
BlockEntityTarget target = getBlockEntity();
if (target != null) {
int currentPower = target.getActivePower();
target.setActivePower(0);
target.close();
if (currentPower != 0 && level.getServer().isRedstoneEnabled()) {
level.updateAroundRedstone(this, null);
}
return true;
}
return false;
}
@Override
public int onUpdate(int type) {
if (type == Level.BLOCK_UPDATE_SCHEDULED) {
deactivatePower();
return type;
}
return 0;
}
@Since("1.4.0.0-PN")
@PowerNukkitOnly
@Override
public boolean onProjectileHit(@Nonnull Entity projectile, @Nonnull Position position, @Nonnull Vector3 motion) {
int ticks = 8;
if (projectile instanceof EntityArrow || projectile instanceof EntityThrownTrident) {
ticks = 20;
}
MovingObjectPosition intercept = calculateIntercept(position, position.add(motion.multiply(2)));
if (intercept == null) {
return false;
}
BlockFace faceHit = intercept.getFaceHit();
if (faceHit == null) {
return false;
}
Vector3 hitVector = intercept.hitVector.subtract(x*2, y*2, z*2);
List axes = new ArrayList<>(Arrays.asList(Axis.values()));
axes.remove(faceHit.getAxis());
double[] coords = new double[] { hitVector.getAxis(axes.get(0)), hitVector.getAxis(axes.get(1)) };
for (int i = 0; i < 2 ; i++) {
if (coords[i] == 0.5) {
coords[i] = 1;
} else if (coords[i] <= 0 || coords[i] >= 1) {
coords[i] = 0;
} else if (coords[i] < 0.5) {
coords[i] *= 2;
} else {
coords[i] = (coords[i] / (-0.5)) + 2;
}
}
double scale = (coords[0] + coords[1]) / 2;
activatePower(NukkitMath.ceilDouble(16 * scale), ticks);
return true;
}
@Override
public int getToolType() {
return ItemTool.TYPE_HOE;
}
@Override
public double getHardness() {
return 0.5;
}
@Override
public double getResistance() {
return 0.5;
}
@Override
public int getBurnAbility() {
return 15;
}
@Override
public int getBurnChance() {
return 0;
}
@Override
public BlockColor getColor() {
return BlockColor.QUARTZ_BLOCK_COLOR;
}
}