minecraft-src/net/minecraft/world/entity/vehicle/AbstractMinecart.java
2025-07-04 03:45:38 +03:00

593 lines
18 KiB
Java

package net.minecraft.world.entity.vehicle;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.Maps;
import com.mojang.datafixers.util.Pair;
import java.util.Map;
import java.util.Optional;
import net.minecraft.Util;
import net.minecraft.BlockUtil.FoundRectangle;
import net.minecraft.core.BlockPos;
import net.minecraft.core.Direction;
import net.minecraft.core.Vec3i;
import net.minecraft.nbt.CompoundTag;
import net.minecraft.nbt.NbtOps;
import net.minecraft.nbt.Tag;
import net.minecraft.network.syncher.EntityDataAccessor;
import net.minecraft.network.syncher.EntityDataSerializers;
import net.minecraft.network.syncher.SynchedEntityData;
import net.minecraft.network.syncher.SynchedEntityData.Builder;
import net.minecraft.resources.RegistryOps;
import net.minecraft.server.level.ServerLevel;
import net.minecraft.tags.BlockTags;
import net.minecraft.util.Mth;
import net.minecraft.world.entity.Entity;
import net.minecraft.world.entity.EntityDimensions;
import net.minecraft.world.entity.EntitySpawnReason;
import net.minecraft.world.entity.EntityType;
import net.minecraft.world.entity.InterpolationHandler;
import net.minecraft.world.entity.LivingEntity;
import net.minecraft.world.entity.MoverType;
import net.minecraft.world.entity.Pose;
import net.minecraft.world.entity.npc.Villager;
import net.minecraft.world.entity.npc.WanderingTrader;
import net.minecraft.world.entity.player.Player;
import net.minecraft.world.flag.FeatureFlags;
import net.minecraft.world.item.ItemStack;
import net.minecraft.world.level.Level;
import net.minecraft.world.level.block.BaseRailBlock;
import net.minecraft.world.level.block.Blocks;
import net.minecraft.world.level.block.PoweredRailBlock;
import net.minecraft.world.level.block.state.BlockState;
import net.minecraft.world.level.block.state.properties.RailShape;
import net.minecraft.world.phys.AABB;
import net.minecraft.world.phys.Vec3;
import org.jetbrains.annotations.Nullable;
public abstract class AbstractMinecart extends VehicleEntity {
private static final Vec3 LOWERED_PASSENGER_ATTACHMENT = new Vec3(0.0, 0.0, 0.0);
private static final EntityDataAccessor<Optional<BlockState>> DATA_ID_CUSTOM_DISPLAY_BLOCK = SynchedEntityData.defineId(
AbstractMinecart.class, EntityDataSerializers.OPTIONAL_BLOCK_STATE
);
private static final EntityDataAccessor<Integer> DATA_ID_DISPLAY_OFFSET = SynchedEntityData.defineId(AbstractMinecart.class, EntityDataSerializers.INT);
private static final ImmutableMap<Pose, ImmutableList<Integer>> POSE_DISMOUNT_HEIGHTS = ImmutableMap.of(
Pose.STANDING, ImmutableList.of(0, 1, -1), Pose.CROUCHING, ImmutableList.of(0, 1, -1), Pose.SWIMMING, ImmutableList.of(0, 1)
);
protected static final float WATER_SLOWDOWN_FACTOR = 0.95F;
private static final boolean DEFAULT_FLIPPED_ROTATION = false;
private boolean onRails;
private boolean flipped = false;
private final MinecartBehavior behavior;
private static final Map<RailShape, Pair<Vec3i, Vec3i>> EXITS = Maps.newEnumMap(
Util.make(
() -> {
Vec3i vec3i = Direction.WEST.getUnitVec3i();
Vec3i vec3i2 = Direction.EAST.getUnitVec3i();
Vec3i vec3i3 = Direction.NORTH.getUnitVec3i();
Vec3i vec3i4 = Direction.SOUTH.getUnitVec3i();
Vec3i vec3i5 = vec3i.below();
Vec3i vec3i6 = vec3i2.below();
Vec3i vec3i7 = vec3i3.below();
Vec3i vec3i8 = vec3i4.below();
return ImmutableMap.of(
RailShape.NORTH_SOUTH,
Pair.of(vec3i3, vec3i4),
RailShape.EAST_WEST,
Pair.of(vec3i, vec3i2),
RailShape.ASCENDING_EAST,
Pair.of(vec3i5, vec3i2),
RailShape.ASCENDING_WEST,
Pair.of(vec3i, vec3i6),
RailShape.ASCENDING_NORTH,
Pair.of(vec3i3, vec3i8),
RailShape.ASCENDING_SOUTH,
Pair.of(vec3i7, vec3i4),
RailShape.SOUTH_EAST,
Pair.of(vec3i4, vec3i2),
RailShape.SOUTH_WEST,
Pair.of(vec3i4, vec3i),
RailShape.NORTH_WEST,
Pair.of(vec3i3, vec3i),
RailShape.NORTH_EAST,
Pair.of(vec3i3, vec3i2)
);
}
)
);
protected AbstractMinecart(EntityType<?> entityType, Level level) {
super(entityType, level);
this.blocksBuilding = true;
if (useExperimentalMovement(level)) {
this.behavior = new NewMinecartBehavior(this);
} else {
this.behavior = new OldMinecartBehavior(this);
}
}
protected AbstractMinecart(EntityType<?> entityType, Level level, double x, double y, double z) {
this(entityType, level);
this.setInitialPos(x, y, z);
}
public void setInitialPos(double x, double y, double z) {
this.setPos(x, y, z);
this.xo = x;
this.yo = y;
this.zo = z;
}
@Nullable
public static <T extends AbstractMinecart> T createMinecart(
Level level, double x, double y, double z, EntityType<T> type, EntitySpawnReason spawnReason, ItemStack spawnedFrom, @Nullable Player player
) {
T abstractMinecart = (T)type.create(level, spawnReason);
if (abstractMinecart != null) {
abstractMinecart.setInitialPos(x, y, z);
EntityType.createDefaultStackConfig(level, spawnedFrom, player).accept(abstractMinecart);
if (abstractMinecart.getBehavior() instanceof NewMinecartBehavior newMinecartBehavior) {
BlockPos blockPos = abstractMinecart.getCurrentBlockPosOrRailBelow();
BlockState blockState = level.getBlockState(blockPos);
newMinecartBehavior.adjustToRails(blockPos, blockState, true);
}
}
return abstractMinecart;
}
public MinecartBehavior getBehavior() {
return this.behavior;
}
@Override
protected Entity.MovementEmission getMovementEmission() {
return Entity.MovementEmission.EVENTS;
}
@Override
protected void defineSynchedData(Builder builder) {
super.defineSynchedData(builder);
builder.define(DATA_ID_CUSTOM_DISPLAY_BLOCK, Optional.empty());
builder.define(DATA_ID_DISPLAY_OFFSET, this.getDefaultDisplayOffset());
}
@Override
public boolean canCollideWith(Entity entity) {
return AbstractBoat.canVehicleCollide(this, entity);
}
@Override
public boolean isPushable() {
return true;
}
@Override
public Vec3 getRelativePortalPosition(Direction.Axis axis, FoundRectangle portal) {
return LivingEntity.resetForwardDirectionOfRelativePortalPosition(super.getRelativePortalPosition(axis, portal));
}
@Override
protected Vec3 getPassengerAttachmentPoint(Entity entity, EntityDimensions dimensions, float partialTick) {
boolean bl = entity instanceof Villager || entity instanceof WanderingTrader;
return bl ? LOWERED_PASSENGER_ATTACHMENT : super.getPassengerAttachmentPoint(entity, dimensions, partialTick);
}
@Override
public Vec3 getDismountLocationForPassenger(LivingEntity passenger) {
Direction direction = this.getMotionDirection();
if (direction.getAxis() == Direction.Axis.Y) {
return super.getDismountLocationForPassenger(passenger);
} else {
int[][] is = DismountHelper.offsetsForDirection(direction);
BlockPos blockPos = this.blockPosition();
BlockPos.MutableBlockPos mutableBlockPos = new BlockPos.MutableBlockPos();
ImmutableList<Pose> immutableList = passenger.getDismountPoses();
for (Pose pose : immutableList) {
EntityDimensions entityDimensions = passenger.getDimensions(pose);
float f = Math.min(entityDimensions.width(), 1.0F) / 2.0F;
for (int i : POSE_DISMOUNT_HEIGHTS.get(pose)) {
for (int[] js : is) {
mutableBlockPos.set(blockPos.getX() + js[0], blockPos.getY() + i, blockPos.getZ() + js[1]);
double d = this.level()
.getBlockFloorHeight(
DismountHelper.nonClimbableShape(this.level(), mutableBlockPos), () -> DismountHelper.nonClimbableShape(this.level(), mutableBlockPos.below())
);
if (DismountHelper.isBlockFloorValid(d)) {
AABB aABB = new AABB(-f, 0.0, -f, f, entityDimensions.height(), f);
Vec3 vec3 = Vec3.upFromBottomCenterOf(mutableBlockPos, d);
if (DismountHelper.canDismountTo(this.level(), passenger, aABB.move(vec3))) {
passenger.setPose(pose);
return vec3;
}
}
}
}
}
double e = this.getBoundingBox().maxY;
mutableBlockPos.set((double)blockPos.getX(), e, (double)blockPos.getZ());
for (Pose pose2 : immutableList) {
double g = passenger.getDimensions(pose2).height();
int j = Mth.ceil(e - mutableBlockPos.getY() + g);
double h = DismountHelper.findCeilingFrom(mutableBlockPos, j, blockPosx -> this.level().getBlockState(blockPosx).getCollisionShape(this.level(), blockPosx));
if (e + g <= h) {
passenger.setPose(pose2);
break;
}
}
return super.getDismountLocationForPassenger(passenger);
}
}
@Override
protected float getBlockSpeedFactor() {
BlockState blockState = this.level().getBlockState(this.blockPosition());
return blockState.is(BlockTags.RAILS) ? 1.0F : super.getBlockSpeedFactor();
}
@Override
public void animateHurt(float yaw) {
this.setHurtDir(-this.getHurtDir());
this.setHurtTime(10);
this.setDamage(this.getDamage() + this.getDamage() * 10.0F);
}
@Override
public boolean isPickable() {
return !this.isRemoved();
}
public static Pair<Vec3i, Vec3i> exits(RailShape shape) {
return (Pair<Vec3i, Vec3i>)EXITS.get(shape);
}
@Override
public Direction getMotionDirection() {
return this.behavior.getMotionDirection();
}
@Override
protected double getDefaultGravity() {
return this.isInWater() ? 0.005 : 0.04;
}
@Override
public void tick() {
if (this.getHurtTime() > 0) {
this.setHurtTime(this.getHurtTime() - 1);
}
if (this.getDamage() > 0.0F) {
this.setDamage(this.getDamage() - 1.0F);
}
this.checkBelowWorld();
this.handlePortal();
this.behavior.tick();
this.updateInWaterStateAndDoFluidPushing();
if (this.isInLava()) {
this.lavaIgnite();
this.lavaHurt();
this.fallDistance *= 0.5;
}
this.firstTick = false;
}
public boolean isFirstTick() {
return this.firstTick;
}
public BlockPos getCurrentBlockPosOrRailBelow() {
int i = Mth.floor(this.getX());
int j = Mth.floor(this.getY());
int k = Mth.floor(this.getZ());
if (useExperimentalMovement(this.level())) {
double d = this.getY() - 0.1 - 1.0E-5F;
if (this.level().getBlockState(BlockPos.containing(i, d, k)).is(BlockTags.RAILS)) {
j = Mth.floor(d);
}
} else if (this.level().getBlockState(new BlockPos(i, j - 1, k)).is(BlockTags.RAILS)) {
j--;
}
return new BlockPos(i, j, k);
}
protected double getMaxSpeed(ServerLevel level) {
return this.behavior.getMaxSpeed(level);
}
/**
* Called every tick the minecart is on an activator rail.
*/
public void activateMinecart(int x, int y, int z, boolean powered) {
}
@Override
public void lerpPositionAndRotationStep(int steps, double targetX, double targetY, double targetZ, double targetYRot, double targetXRot) {
super.lerpPositionAndRotationStep(steps, targetX, targetY, targetZ, targetYRot, targetXRot);
}
@Override
public void applyGravity() {
super.applyGravity();
}
@Override
public void reapplyPosition() {
super.reapplyPosition();
}
@Override
public boolean updateInWaterStateAndDoFluidPushing() {
return super.updateInWaterStateAndDoFluidPushing();
}
@Override
public Vec3 getKnownMovement() {
return this.behavior.getKnownMovement(super.getKnownMovement());
}
@Override
public InterpolationHandler getInterpolation() {
return this.behavior.getInterpolation();
}
@Override
public void lerpMotion(double x, double y, double z) {
this.behavior.lerpMotion(x, y, z);
}
protected void moveAlongTrack(ServerLevel level) {
this.behavior.moveAlongTrack(level);
}
protected void comeOffTrack(ServerLevel level) {
double d = this.getMaxSpeed(level);
Vec3 vec3 = this.getDeltaMovement();
this.setDeltaMovement(Mth.clamp(vec3.x, -d, d), vec3.y, Mth.clamp(vec3.z, -d, d));
if (this.onGround()) {
this.setDeltaMovement(this.getDeltaMovement().scale(0.5));
}
this.move(MoverType.SELF, this.getDeltaMovement());
if (!this.onGround()) {
this.setDeltaMovement(this.getDeltaMovement().scale(0.95));
}
}
protected double makeStepAlongTrack(BlockPos pos, RailShape railShape, double speed) {
return this.behavior.stepAlongTrack(pos, railShape, speed);
}
@Override
public void move(MoverType type, Vec3 movement) {
if (useExperimentalMovement(this.level())) {
Vec3 vec3 = this.position().add(movement);
super.move(type, movement);
boolean bl = this.behavior.pushAndPickupEntities();
if (bl) {
super.move(type, vec3.subtract(this.position()));
}
if (type.equals(MoverType.PISTON)) {
this.onRails = false;
}
} else {
super.move(type, movement);
this.applyEffectsFromBlocks();
}
}
@Override
public void applyEffectsFromBlocks() {
if (!useExperimentalMovement(this.level())) {
this.applyEffectsFromBlocks(this.position(), this.position());
} else {
super.applyEffectsFromBlocks();
}
}
@Override
public boolean isOnRails() {
return this.onRails;
}
public void setOnRails(boolean onRails) {
this.onRails = onRails;
}
public boolean isFlipped() {
return this.flipped;
}
public void setFlipped(boolean flipped) {
this.flipped = flipped;
}
public Vec3 getRedstoneDirection(BlockPos pos) {
BlockState blockState = this.level().getBlockState(pos);
if (blockState.is(Blocks.POWERED_RAIL) && (Boolean)blockState.getValue(PoweredRailBlock.POWERED)) {
RailShape railShape = blockState.getValue(((BaseRailBlock)blockState.getBlock()).getShapeProperty());
if (railShape == RailShape.EAST_WEST) {
if (this.isRedstoneConductor(pos.west())) {
return new Vec3(1.0, 0.0, 0.0);
}
if (this.isRedstoneConductor(pos.east())) {
return new Vec3(-1.0, 0.0, 0.0);
}
} else if (railShape == RailShape.NORTH_SOUTH) {
if (this.isRedstoneConductor(pos.north())) {
return new Vec3(0.0, 0.0, 1.0);
}
if (this.isRedstoneConductor(pos.south())) {
return new Vec3(0.0, 0.0, -1.0);
}
}
return Vec3.ZERO;
} else {
return Vec3.ZERO;
}
}
public boolean isRedstoneConductor(BlockPos pos) {
return this.level().getBlockState(pos).isRedstoneConductor(this.level(), pos);
}
protected Vec3 applyNaturalSlowdown(Vec3 speed) {
double d = this.behavior.getSlowdownFactor();
Vec3 vec3 = speed.multiply(d, 0.0, d);
if (this.isInWater()) {
vec3 = vec3.scale(0.95F);
}
return vec3;
}
@Override
protected void readAdditionalSaveData(CompoundTag tag) {
RegistryOps<Tag> registryOps = this.registryAccess().createSerializationContext(NbtOps.INSTANCE);
this.setCustomDisplayBlockState(tag.read("DisplayState", BlockState.CODEC, registryOps));
this.setDisplayOffset(tag.getIntOr("DisplayOffset", this.getDefaultDisplayOffset()));
this.flipped = tag.getBooleanOr("FlippedRotation", false);
this.firstTick = tag.getBooleanOr("HasTicked", false);
}
@Override
protected void addAdditionalSaveData(CompoundTag tag) {
this.getCustomDisplayBlockState().ifPresent(blockState -> {
RegistryOps<Tag> registryOps = this.registryAccess().createSerializationContext(NbtOps.INSTANCE);
tag.store("DisplayState", BlockState.CODEC, registryOps, blockState);
});
int i = this.getDisplayOffset();
if (i != this.getDefaultDisplayOffset()) {
tag.putInt("DisplayOffset", i);
}
tag.putBoolean("FlippedRotation", this.flipped);
tag.putBoolean("HasTicked", this.firstTick);
}
@Override
public void push(Entity entity) {
if (!this.level().isClientSide) {
if (!entity.noPhysics && !this.noPhysics) {
if (!this.hasPassenger(entity)) {
double d = entity.getX() - this.getX();
double e = entity.getZ() - this.getZ();
double f = d * d + e * e;
if (f >= 1.0E-4F) {
f = Math.sqrt(f);
d /= f;
e /= f;
double g = 1.0 / f;
if (g > 1.0) {
g = 1.0;
}
d *= g;
e *= g;
d *= 0.1F;
e *= 0.1F;
d *= 0.5;
e *= 0.5;
if (entity instanceof AbstractMinecart abstractMinecart) {
this.pushOtherMinecart(abstractMinecart, d, e);
} else {
this.push(-d, 0.0, -e);
entity.push(d / 4.0, 0.0, e / 4.0);
}
}
}
}
}
}
private void pushOtherMinecart(AbstractMinecart otherMinecart, double deltaX, double deltaZ) {
double d;
double e;
if (useExperimentalMovement(this.level())) {
d = this.getDeltaMovement().x;
e = this.getDeltaMovement().z;
} else {
d = otherMinecart.getX() - this.getX();
e = otherMinecart.getZ() - this.getZ();
}
Vec3 vec3 = new Vec3(d, 0.0, e).normalize();
Vec3 vec32 = new Vec3(Mth.cos(this.getYRot() * (float) (Math.PI / 180.0)), 0.0, Mth.sin(this.getYRot() * (float) (Math.PI / 180.0))).normalize();
double f = Math.abs(vec3.dot(vec32));
if (!(f < 0.8F) || useExperimentalMovement(this.level())) {
Vec3 vec33 = this.getDeltaMovement();
Vec3 vec34 = otherMinecart.getDeltaMovement();
if (otherMinecart.isFurnace() && !this.isFurnace()) {
this.setDeltaMovement(vec33.multiply(0.2, 1.0, 0.2));
this.push(vec34.x - deltaX, 0.0, vec34.z - deltaZ);
otherMinecart.setDeltaMovement(vec34.multiply(0.95, 1.0, 0.95));
} else if (!otherMinecart.isFurnace() && this.isFurnace()) {
otherMinecart.setDeltaMovement(vec34.multiply(0.2, 1.0, 0.2));
otherMinecart.push(vec33.x + deltaX, 0.0, vec33.z + deltaZ);
this.setDeltaMovement(vec33.multiply(0.95, 1.0, 0.95));
} else {
double g = (vec34.x + vec33.x) / 2.0;
double h = (vec34.z + vec33.z) / 2.0;
this.setDeltaMovement(vec33.multiply(0.2, 1.0, 0.2));
this.push(g - deltaX, 0.0, h - deltaZ);
otherMinecart.setDeltaMovement(vec34.multiply(0.2, 1.0, 0.2));
otherMinecart.push(g + deltaX, 0.0, h + deltaZ);
}
}
}
public BlockState getDisplayBlockState() {
return (BlockState)this.getCustomDisplayBlockState().orElseGet(this::getDefaultDisplayBlockState);
}
private Optional<BlockState> getCustomDisplayBlockState() {
return this.getEntityData().get(DATA_ID_CUSTOM_DISPLAY_BLOCK);
}
public BlockState getDefaultDisplayBlockState() {
return Blocks.AIR.defaultBlockState();
}
public int getDisplayOffset() {
return this.getEntityData().get(DATA_ID_DISPLAY_OFFSET);
}
public int getDefaultDisplayOffset() {
return 6;
}
public void setCustomDisplayBlockState(Optional<BlockState> customDisplayBlockState) {
this.getEntityData().set(DATA_ID_CUSTOM_DISPLAY_BLOCK, customDisplayBlockState);
}
public void setDisplayOffset(int displayOffset) {
this.getEntityData().set(DATA_ID_DISPLAY_OFFSET, displayOffset);
}
public static boolean useExperimentalMovement(Level level) {
return level.enabledFeatures().contains(FeatureFlags.MINECART_IMPROVEMENTS);
}
@Override
public abstract ItemStack getPickResult();
public boolean isRideable() {
return false;
}
public boolean isFurnace() {
return false;
}
}