419 lines
13 KiB
Java
419 lines
13 KiB
Java
package net.minecraft.world.entity.vehicle;
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import com.mojang.datafixers.util.Pair;
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import java.util.List;
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import net.minecraft.core.BlockPos;
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import net.minecraft.core.Direction;
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import net.minecraft.core.Vec3i;
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import net.minecraft.server.level.ServerLevel;
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import net.minecraft.server.level.ServerPlayer;
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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.Entity;
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import net.minecraft.world.entity.EntitySelector;
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import net.minecraft.world.entity.InterpolationHandler;
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import net.minecraft.world.entity.MoverType;
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import net.minecraft.world.entity.animal.IronGolem;
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import net.minecraft.world.entity.player.Player;
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import net.minecraft.world.level.block.BaseRailBlock;
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import net.minecraft.world.level.block.Blocks;
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import net.minecraft.world.level.block.PoweredRailBlock;
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import net.minecraft.world.level.block.state.BlockState;
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import net.minecraft.world.level.block.state.properties.RailShape;
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import net.minecraft.world.phys.AABB;
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import net.minecraft.world.phys.Vec3;
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import org.jetbrains.annotations.Nullable;
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public class OldMinecartBehavior extends MinecartBehavior {
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private static final double MINECART_RIDABLE_THRESHOLD = 0.01;
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private static final double MAX_SPEED_IN_WATER = 0.2;
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private static final double MAX_SPEED_ON_LAND = 0.4;
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private static final double ABSOLUTE_MAX_SPEED = 0.4;
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private final InterpolationHandler interpolation;
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private Vec3 targetDeltaMovement = Vec3.ZERO;
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public OldMinecartBehavior(AbstractMinecart minecart) {
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super(minecart);
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this.interpolation = new InterpolationHandler(minecart, this::onInterpolation);
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}
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@Override
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public InterpolationHandler getInterpolation() {
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return this.interpolation;
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}
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public void onInterpolation(InterpolationHandler handler) {
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this.setDeltaMovement(this.targetDeltaMovement);
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}
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@Override
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public void lerpMotion(double x, double y, double z) {
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this.targetDeltaMovement = new Vec3(x, y, z);
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this.setDeltaMovement(this.targetDeltaMovement);
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}
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@Override
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public void tick() {
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if (this.level() instanceof ServerLevel serverLevel) {
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this.minecart.applyGravity();
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BlockPos var11 = this.minecart.getCurrentBlockPosOrRailBelow();
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BlockState blockState = this.level().getBlockState(var11);
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boolean bl = BaseRailBlock.isRail(blockState);
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this.minecart.setOnRails(bl);
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if (bl) {
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this.moveAlongTrack(serverLevel);
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if (blockState.is(Blocks.ACTIVATOR_RAIL)) {
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this.minecart.activateMinecart(var11.getX(), var11.getY(), var11.getZ(), (Boolean)blockState.getValue(PoweredRailBlock.POWERED));
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}
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} else {
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this.minecart.comeOffTrack(serverLevel);
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}
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this.minecart.applyEffectsFromBlocks();
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this.setXRot(0.0F);
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double d = this.minecart.xo - this.getX();
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double e = this.minecart.zo - this.getZ();
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if (d * d + e * e > 0.001) {
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this.setYRot((float)(Mth.atan2(e, d) * 180.0 / Math.PI));
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if (this.minecart.isFlipped()) {
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this.setYRot(this.getYRot() + 180.0F);
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}
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}
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double f = Mth.wrapDegrees(this.getYRot() - this.minecart.yRotO);
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if (f < -170.0 || f >= 170.0) {
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this.setYRot(this.getYRot() + 180.0F);
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this.minecart.setFlipped(!this.minecart.isFlipped());
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}
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this.setXRot(this.getXRot() % 360.0F);
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this.setYRot(this.getYRot() % 360.0F);
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this.pushAndPickupEntities();
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} else {
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if (this.interpolation.hasActiveInterpolation()) {
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this.interpolation.interpolate();
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} else {
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this.minecart.reapplyPosition();
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this.setXRot(this.getXRot() % 360.0F);
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this.setYRot(this.getYRot() % 360.0F);
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}
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}
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}
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@Override
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public void moveAlongTrack(ServerLevel level) {
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BlockPos blockPos = this.minecart.getCurrentBlockPosOrRailBelow();
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BlockState blockState = this.level().getBlockState(blockPos);
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this.minecart.resetFallDistance();
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double d = this.minecart.getX();
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double e = this.minecart.getY();
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double f = this.minecart.getZ();
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Vec3 vec3 = this.getPos(d, e, f);
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e = blockPos.getY();
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boolean bl = false;
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boolean bl2 = false;
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if (blockState.is(Blocks.POWERED_RAIL)) {
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bl = (Boolean)blockState.getValue(PoweredRailBlock.POWERED);
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bl2 = !bl;
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}
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double g = 0.0078125;
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if (this.minecart.isInWater()) {
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g *= 0.2;
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}
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Vec3 vec32 = this.getDeltaMovement();
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RailShape railShape = blockState.getValue(((BaseRailBlock)blockState.getBlock()).getShapeProperty());
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switch (railShape) {
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case ASCENDING_EAST:
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this.setDeltaMovement(vec32.add(-g, 0.0, 0.0));
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e++;
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break;
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case ASCENDING_WEST:
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this.setDeltaMovement(vec32.add(g, 0.0, 0.0));
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e++;
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break;
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case ASCENDING_NORTH:
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this.setDeltaMovement(vec32.add(0.0, 0.0, g));
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e++;
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break;
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case ASCENDING_SOUTH:
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this.setDeltaMovement(vec32.add(0.0, 0.0, -g));
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e++;
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}
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vec32 = this.getDeltaMovement();
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Pair<Vec3i, Vec3i> pair = AbstractMinecart.exits(railShape);
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Vec3i vec3i = pair.getFirst();
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Vec3i vec3i2 = pair.getSecond();
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double h = vec3i2.getX() - vec3i.getX();
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double i = vec3i2.getZ() - vec3i.getZ();
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double j = Math.sqrt(h * h + i * i);
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double k = vec32.x * h + vec32.z * i;
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if (k < 0.0) {
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h = -h;
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i = -i;
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}
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double l = Math.min(2.0, vec32.horizontalDistance());
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vec32 = new Vec3(l * h / j, vec32.y, l * i / j);
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this.setDeltaMovement(vec32);
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Entity entity = this.minecart.getFirstPassenger();
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Vec3 vec33;
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if (this.minecart.getFirstPassenger() instanceof ServerPlayer serverPlayer) {
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vec33 = serverPlayer.getLastClientMoveIntent();
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} else {
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vec33 = Vec3.ZERO;
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}
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if (entity instanceof Player && vec33.lengthSqr() > 0.0) {
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Vec3 vec34 = vec33.normalize();
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double m = this.getDeltaMovement().horizontalDistanceSqr();
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if (vec34.lengthSqr() > 0.0 && m < 0.01) {
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this.setDeltaMovement(this.getDeltaMovement().add(vec33.x * 0.001, 0.0, vec33.z * 0.001));
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bl2 = false;
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}
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}
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if (bl2) {
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double n = this.getDeltaMovement().horizontalDistance();
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if (n < 0.03) {
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this.setDeltaMovement(Vec3.ZERO);
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} else {
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this.setDeltaMovement(this.getDeltaMovement().multiply(0.5, 0.0, 0.5));
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}
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}
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double n = blockPos.getX() + 0.5 + vec3i.getX() * 0.5;
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double o = blockPos.getZ() + 0.5 + vec3i.getZ() * 0.5;
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double p = blockPos.getX() + 0.5 + vec3i2.getX() * 0.5;
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double q = blockPos.getZ() + 0.5 + vec3i2.getZ() * 0.5;
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h = p - n;
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i = q - o;
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double r;
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if (h == 0.0) {
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r = f - blockPos.getZ();
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} else if (i == 0.0) {
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r = d - blockPos.getX();
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} else {
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double s = d - n;
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double t = f - o;
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r = (s * h + t * i) * 2.0;
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}
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d = n + h * r;
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f = o + i * r;
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this.setPos(d, e, f);
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double s = this.minecart.isVehicle() ? 0.75 : 1.0;
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double t = this.minecart.getMaxSpeed(level);
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vec32 = this.getDeltaMovement();
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this.minecart.move(MoverType.SELF, new Vec3(Mth.clamp(s * vec32.x, -t, t), 0.0, Mth.clamp(s * vec32.z, -t, t)));
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if (vec3i.getY() != 0
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&& Mth.floor(this.minecart.getX()) - blockPos.getX() == vec3i.getX()
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&& Mth.floor(this.minecart.getZ()) - blockPos.getZ() == vec3i.getZ()) {
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this.setPos(this.minecart.getX(), this.minecart.getY() + vec3i.getY(), this.minecart.getZ());
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} else if (vec3i2.getY() != 0
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&& Mth.floor(this.minecart.getX()) - blockPos.getX() == vec3i2.getX()
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&& Mth.floor(this.minecart.getZ()) - blockPos.getZ() == vec3i2.getZ()) {
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this.setPos(this.minecart.getX(), this.minecart.getY() + vec3i2.getY(), this.minecart.getZ());
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}
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this.setDeltaMovement(this.minecart.applyNaturalSlowdown(this.getDeltaMovement()));
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Vec3 vec35 = this.getPos(this.minecart.getX(), this.minecart.getY(), this.minecart.getZ());
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if (vec35 != null && vec3 != null) {
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double u = (vec3.y - vec35.y) * 0.05;
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Vec3 vec36 = this.getDeltaMovement();
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double v = vec36.horizontalDistance();
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if (v > 0.0) {
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this.setDeltaMovement(vec36.multiply((v + u) / v, 1.0, (v + u) / v));
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}
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this.setPos(this.minecart.getX(), vec35.y, this.minecart.getZ());
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}
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int w = Mth.floor(this.minecart.getX());
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int x = Mth.floor(this.minecart.getZ());
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if (w != blockPos.getX() || x != blockPos.getZ()) {
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Vec3 vec36 = this.getDeltaMovement();
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double v = vec36.horizontalDistance();
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this.setDeltaMovement(v * (w - blockPos.getX()), vec36.y, v * (x - blockPos.getZ()));
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}
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if (bl) {
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Vec3 vec36 = this.getDeltaMovement();
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double v = vec36.horizontalDistance();
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if (v > 0.01) {
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double y = 0.06;
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this.setDeltaMovement(vec36.add(vec36.x / v * 0.06, 0.0, vec36.z / v * 0.06));
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} else {
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Vec3 vec37 = this.getDeltaMovement();
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double z = vec37.x;
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double aa = vec37.z;
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if (railShape == RailShape.EAST_WEST) {
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if (this.minecart.isRedstoneConductor(blockPos.west())) {
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z = 0.02;
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} else if (this.minecart.isRedstoneConductor(blockPos.east())) {
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z = -0.02;
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}
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} else {
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if (railShape != RailShape.NORTH_SOUTH) {
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return;
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}
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if (this.minecart.isRedstoneConductor(blockPos.north())) {
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aa = 0.02;
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} else if (this.minecart.isRedstoneConductor(blockPos.south())) {
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aa = -0.02;
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}
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}
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this.setDeltaMovement(z, vec37.y, aa);
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}
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}
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}
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@Nullable
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public Vec3 getPosOffs(double x, double y, double z, double scale) {
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int i = Mth.floor(x);
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int j = Mth.floor(y);
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int k = Mth.floor(z);
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if (this.level().getBlockState(new BlockPos(i, j - 1, k)).is(BlockTags.RAILS)) {
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j--;
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}
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BlockState blockState = this.level().getBlockState(new BlockPos(i, j, k));
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if (BaseRailBlock.isRail(blockState)) {
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RailShape railShape = blockState.getValue(((BaseRailBlock)blockState.getBlock()).getShapeProperty());
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y = j;
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if (railShape.isSlope()) {
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y = j + 1;
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}
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Pair<Vec3i, Vec3i> pair = AbstractMinecart.exits(railShape);
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Vec3i vec3i = pair.getFirst();
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Vec3i vec3i2 = pair.getSecond();
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double d = vec3i2.getX() - vec3i.getX();
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double e = vec3i2.getZ() - vec3i.getZ();
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double f = Math.sqrt(d * d + e * e);
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d /= f;
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e /= f;
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x += d * scale;
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z += e * scale;
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if (vec3i.getY() != 0 && Mth.floor(x) - i == vec3i.getX() && Mth.floor(z) - k == vec3i.getZ()) {
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y += vec3i.getY();
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} else if (vec3i2.getY() != 0 && Mth.floor(x) - i == vec3i2.getX() && Mth.floor(z) - k == vec3i2.getZ()) {
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y += vec3i2.getY();
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}
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return this.getPos(x, y, z);
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} else {
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return null;
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}
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}
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@Nullable
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public Vec3 getPos(double x, double y, double z) {
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int i = Mth.floor(x);
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int j = Mth.floor(y);
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int k = Mth.floor(z);
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if (this.level().getBlockState(new BlockPos(i, j - 1, k)).is(BlockTags.RAILS)) {
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j--;
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}
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BlockState blockState = this.level().getBlockState(new BlockPos(i, j, k));
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if (BaseRailBlock.isRail(blockState)) {
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RailShape railShape = blockState.getValue(((BaseRailBlock)blockState.getBlock()).getShapeProperty());
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Pair<Vec3i, Vec3i> pair = AbstractMinecart.exits(railShape);
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Vec3i vec3i = pair.getFirst();
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Vec3i vec3i2 = pair.getSecond();
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double d = i + 0.5 + vec3i.getX() * 0.5;
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double e = j + 0.0625 + vec3i.getY() * 0.5;
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double f = k + 0.5 + vec3i.getZ() * 0.5;
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double g = i + 0.5 + vec3i2.getX() * 0.5;
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double h = j + 0.0625 + vec3i2.getY() * 0.5;
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double l = k + 0.5 + vec3i2.getZ() * 0.5;
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double m = g - d;
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double n = (h - e) * 2.0;
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double o = l - f;
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double p;
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if (m == 0.0) {
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p = z - k;
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} else if (o == 0.0) {
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p = x - i;
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} else {
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double q = x - d;
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double r = z - f;
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p = (q * m + r * o) * 2.0;
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}
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x = d + m * p;
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y = e + n * p;
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z = f + o * p;
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if (n < 0.0) {
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y++;
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} else if (n > 0.0) {
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y += 0.5;
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}
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return new Vec3(x, y, z);
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} else {
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return null;
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}
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}
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@Override
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public double stepAlongTrack(BlockPos pos, RailShape railShape, double speed) {
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return 0.0;
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}
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@Override
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public boolean pushAndPickupEntities() {
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AABB aABB = this.minecart.getBoundingBox().inflate(0.2F, 0.0, 0.2F);
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if (this.minecart.isRideable() && this.getDeltaMovement().horizontalDistanceSqr() >= 0.01) {
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List<Entity> list = this.level().getEntities(this.minecart, aABB, EntitySelector.pushableBy(this.minecart));
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if (!list.isEmpty()) {
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for (Entity entity : list) {
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if (!(entity instanceof Player)
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&& !(entity instanceof IronGolem)
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&& !(entity instanceof AbstractMinecart)
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&& !this.minecart.isVehicle()
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&& !entity.isPassenger()) {
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entity.startRiding(this.minecart);
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} else {
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entity.push(this.minecart);
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}
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}
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}
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} else {
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for (Entity entity2 : this.level().getEntities(this.minecart, aABB)) {
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if (!this.minecart.hasPassenger(entity2) && entity2.isPushable() && entity2 instanceof AbstractMinecart) {
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entity2.push(this.minecart);
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}
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}
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}
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return false;
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}
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@Override
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public Direction getMotionDirection() {
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return this.minecart.isFlipped() ? this.minecart.getDirection().getOpposite().getClockWise() : this.minecart.getDirection().getClockWise();
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}
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@Override
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public Vec3 getKnownMovement(Vec3 movement) {
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return !Double.isNaN(movement.x) && !Double.isNaN(movement.y) && !Double.isNaN(movement.z)
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? new Vec3(Mth.clamp(movement.x, -0.4, 0.4), movement.y, Mth.clamp(movement.z, -0.4, 0.4))
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: Vec3.ZERO;
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}
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@Override
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public double getMaxSpeed(ServerLevel level) {
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return this.minecart.isInWater() ? 0.2 : 0.4;
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}
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@Override
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public double getSlowdownFactor() {
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return this.minecart.isVehicle() ? 0.997 : 0.96;
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}
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}
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