339 lines
11 KiB
Java
339 lines
11 KiB
Java
package net.minecraft.world.level;
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import it.unimi.dsi.fastutil.objects.ObjectArrayList;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.HashSet;
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import java.util.List;
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import java.util.Map;
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import java.util.Optional;
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import java.util.Set;
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import net.minecraft.Util;
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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.util.Mth;
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import net.minecraft.util.profiling.Profiler;
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import net.minecraft.util.profiling.ProfilerFiller;
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import net.minecraft.world.damagesource.DamageSource;
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import net.minecraft.world.entity.Entity;
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import net.minecraft.world.entity.EntityType;
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import net.minecraft.world.entity.LivingEntity;
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import net.minecraft.world.entity.ai.attributes.Attributes;
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import net.minecraft.world.entity.item.ItemEntity;
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import net.minecraft.world.entity.item.PrimedTnt;
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import net.minecraft.world.entity.player.Player;
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import net.minecraft.world.item.ItemStack;
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import net.minecraft.world.level.block.BaseFireBlock;
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import net.minecraft.world.level.block.Block;
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import net.minecraft.world.level.block.state.BlockState;
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import net.minecraft.world.level.gameevent.GameEvent;
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import net.minecraft.world.level.material.FluidState;
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import net.minecraft.world.phys.AABB;
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import net.minecraft.world.phys.HitResult;
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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 ServerExplosion implements Explosion {
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private static final ExplosionDamageCalculator EXPLOSION_DAMAGE_CALCULATOR = new ExplosionDamageCalculator();
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private static final int MAX_DROPS_PER_COMBINED_STACK = 16;
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private static final float LARGE_EXPLOSION_RADIUS = 2.0F;
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private final boolean fire;
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private final Explosion.BlockInteraction blockInteraction;
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private final ServerLevel level;
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private final Vec3 center;
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@Nullable
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private final Entity source;
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private final float radius;
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private final DamageSource damageSource;
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private final ExplosionDamageCalculator damageCalculator;
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private final Map<Player, Vec3> hitPlayers = new HashMap();
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public ServerExplosion(
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ServerLevel level,
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@Nullable Entity source,
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@Nullable DamageSource damageSource,
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@Nullable ExplosionDamageCalculator damageCalculator,
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Vec3 center,
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float radius,
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boolean fire,
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Explosion.BlockInteraction blockInteraction
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) {
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this.level = level;
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this.source = source;
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this.radius = radius;
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this.center = center;
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this.fire = fire;
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this.blockInteraction = blockInteraction;
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this.damageSource = damageSource == null ? level.damageSources().explosion(this) : damageSource;
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this.damageCalculator = damageCalculator == null ? this.makeDamageCalculator(source) : damageCalculator;
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}
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private ExplosionDamageCalculator makeDamageCalculator(@Nullable Entity entity) {
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return (ExplosionDamageCalculator)(entity == null ? EXPLOSION_DAMAGE_CALCULATOR : new EntityBasedExplosionDamageCalculator(entity));
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}
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public static float getSeenPercent(Vec3 explosionVector, Entity entity) {
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AABB aABB = entity.getBoundingBox();
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double d = 1.0 / ((aABB.maxX - aABB.minX) * 2.0 + 1.0);
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double e = 1.0 / ((aABB.maxY - aABB.minY) * 2.0 + 1.0);
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double f = 1.0 / ((aABB.maxZ - aABB.minZ) * 2.0 + 1.0);
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double g = (1.0 - Math.floor(1.0 / d) * d) / 2.0;
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double h = (1.0 - Math.floor(1.0 / f) * f) / 2.0;
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if (!(d < 0.0) && !(e < 0.0) && !(f < 0.0)) {
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int i = 0;
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int j = 0;
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for (double k = 0.0; k <= 1.0; k += d) {
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for (double l = 0.0; l <= 1.0; l += e) {
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for (double m = 0.0; m <= 1.0; m += f) {
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double n = Mth.lerp(k, aABB.minX, aABB.maxX);
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double o = Mth.lerp(l, aABB.minY, aABB.maxY);
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double p = Mth.lerp(m, aABB.minZ, aABB.maxZ);
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Vec3 vec3 = new Vec3(n + g, o, p + h);
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if (entity.level().clip(new ClipContext(vec3, explosionVector, ClipContext.Block.COLLIDER, ClipContext.Fluid.NONE, entity)).getType()
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== HitResult.Type.MISS) {
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i++;
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}
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j++;
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}
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}
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}
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return (float)i / j;
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} else {
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return 0.0F;
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}
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}
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@Override
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public float radius() {
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return this.radius;
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}
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@Override
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public Vec3 center() {
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return this.center;
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}
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private List<BlockPos> calculateExplodedPositions() {
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Set<BlockPos> set = new HashSet();
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int i = 16;
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for (int j = 0; j < 16; j++) {
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for (int k = 0; k < 16; k++) {
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for (int l = 0; l < 16; l++) {
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if (j == 0 || j == 15 || k == 0 || k == 15 || l == 0 || l == 15) {
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double d = j / 15.0F * 2.0F - 1.0F;
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double e = k / 15.0F * 2.0F - 1.0F;
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double f = l / 15.0F * 2.0F - 1.0F;
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double g = Math.sqrt(d * d + e * e + f * f);
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d /= g;
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e /= g;
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f /= g;
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float h = this.radius * (0.7F + this.level.random.nextFloat() * 0.6F);
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double m = this.center.x;
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double n = this.center.y;
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double o = this.center.z;
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for (float p = 0.3F; h > 0.0F; h -= 0.22500001F) {
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BlockPos blockPos = BlockPos.containing(m, n, o);
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BlockState blockState = this.level.getBlockState(blockPos);
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FluidState fluidState = this.level.getFluidState(blockPos);
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if (!this.level.isInWorldBounds(blockPos)) {
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break;
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}
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Optional<Float> optional = this.damageCalculator.getBlockExplosionResistance(this, this.level, blockPos, blockState, fluidState);
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if (optional.isPresent()) {
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h -= (optional.get() + 0.3F) * 0.3F;
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}
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if (h > 0.0F && this.damageCalculator.shouldBlockExplode(this, this.level, blockPos, blockState, h)) {
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set.add(blockPos);
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}
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m += d * 0.3F;
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n += e * 0.3F;
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o += f * 0.3F;
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}
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}
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}
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}
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}
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return new ObjectArrayList<>(set);
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}
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private void hurtEntities() {
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float f = this.radius * 2.0F;
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int i = Mth.floor(this.center.x - f - 1.0);
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int j = Mth.floor(this.center.x + f + 1.0);
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int k = Mth.floor(this.center.y - f - 1.0);
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int l = Mth.floor(this.center.y + f + 1.0);
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int m = Mth.floor(this.center.z - f - 1.0);
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int n = Mth.floor(this.center.z + f + 1.0);
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for (Entity entity : this.level.getEntities(this.source, new AABB(i, k, m, j, l, n))) {
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if (!entity.ignoreExplosion(this)) {
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double d = Math.sqrt(entity.distanceToSqr(this.center)) / f;
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if (d <= 1.0) {
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double e = entity.getX() - this.center.x;
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double g = (entity instanceof PrimedTnt ? entity.getY() : entity.getEyeY()) - this.center.y;
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double h = entity.getZ() - this.center.z;
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double o = Math.sqrt(e * e + g * g + h * h);
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if (o != 0.0) {
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e /= o;
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g /= o;
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h /= o;
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boolean bl = this.damageCalculator.shouldDamageEntity(this, entity);
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float p = this.damageCalculator.getKnockbackMultiplier(entity);
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float q = !bl && p == 0.0F ? 0.0F : getSeenPercent(this.center, entity);
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if (bl) {
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entity.hurtServer(this.level, this.damageSource, this.damageCalculator.getEntityDamageAmount(this, entity, q));
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}
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double r = (1.0 - d) * q * p;
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double s;
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if (entity instanceof LivingEntity livingEntity) {
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s = r * (1.0 - livingEntity.getAttributeValue(Attributes.EXPLOSION_KNOCKBACK_RESISTANCE));
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} else {
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s = r;
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}
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e *= s;
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g *= s;
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h *= s;
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Vec3 vec3 = new Vec3(e, g, h);
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entity.push(vec3);
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if (entity instanceof Player player && !player.isSpectator() && (!player.isCreative() || !player.getAbilities().flying)) {
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this.hitPlayers.put(player, vec3);
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}
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entity.onExplosionHit(this.source);
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}
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}
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}
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}
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}
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private void interactWithBlocks(List<BlockPos> blocks) {
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List<ServerExplosion.StackCollector> list = new ArrayList();
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Util.shuffle(blocks, this.level.random);
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for (BlockPos blockPos : blocks) {
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this.level.getBlockState(blockPos).onExplosionHit(this.level, blockPos, this, (itemStack, blockPosx) -> addOrAppendStack(list, itemStack, blockPosx));
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}
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for (ServerExplosion.StackCollector stackCollector : list) {
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Block.popResource(this.level, stackCollector.pos, stackCollector.stack);
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}
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}
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private void createFire(List<BlockPos> blocks) {
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for (BlockPos blockPos : blocks) {
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if (this.level.random.nextInt(3) == 0 && this.level.getBlockState(blockPos).isAir() && this.level.getBlockState(blockPos.below()).isSolidRender()) {
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this.level.setBlockAndUpdate(blockPos, BaseFireBlock.getState(this.level, blockPos));
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}
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}
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}
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public void explode() {
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this.level.gameEvent(this.source, GameEvent.EXPLODE, this.center);
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List<BlockPos> list = this.calculateExplodedPositions();
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this.hurtEntities();
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if (this.interactsWithBlocks()) {
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ProfilerFiller profilerFiller = Profiler.get();
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profilerFiller.push("explosion_blocks");
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this.interactWithBlocks(list);
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profilerFiller.pop();
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}
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if (this.fire) {
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this.createFire(list);
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}
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}
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private static void addOrAppendStack(List<ServerExplosion.StackCollector> stackCollectors, ItemStack stack, BlockPos pos) {
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for (ServerExplosion.StackCollector stackCollector : stackCollectors) {
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stackCollector.tryMerge(stack);
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if (stack.isEmpty()) {
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return;
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}
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}
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stackCollectors.add(new ServerExplosion.StackCollector(pos, stack));
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}
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private boolean interactsWithBlocks() {
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return this.blockInteraction != Explosion.BlockInteraction.KEEP;
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}
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public Map<Player, Vec3> getHitPlayers() {
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return this.hitPlayers;
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}
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@Override
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public ServerLevel level() {
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return this.level;
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}
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@Nullable
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@Override
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public LivingEntity getIndirectSourceEntity() {
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return Explosion.getIndirectSourceEntity(this.source);
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}
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@Nullable
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@Override
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public Entity getDirectSourceEntity() {
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return this.source;
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}
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public DamageSource getDamageSource() {
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return this.damageSource;
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}
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@Override
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public Explosion.BlockInteraction getBlockInteraction() {
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return this.blockInteraction;
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}
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@Override
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public boolean canTriggerBlocks() {
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if (this.blockInteraction != Explosion.BlockInteraction.TRIGGER_BLOCK) {
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return false;
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} else {
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return this.source != null && this.source.getType() == EntityType.BREEZE_WIND_CHARGE
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? this.level.getGameRules().getBoolean(GameRules.RULE_MOBGRIEFING)
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: true;
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}
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}
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@Override
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public boolean shouldAffectBlocklikeEntities() {
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boolean bl = this.level.getGameRules().getBoolean(GameRules.RULE_MOBGRIEFING);
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boolean bl2 = this.source == null || this.source.getType() != EntityType.BREEZE_WIND_CHARGE && this.source.getType() != EntityType.WIND_CHARGE;
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return bl ? bl2 : this.blockInteraction.shouldAffectBlocklikeEntities() && bl2;
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}
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public boolean isSmall() {
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return this.radius < 2.0F || !this.interactsWithBlocks();
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}
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static class StackCollector {
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final BlockPos pos;
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ItemStack stack;
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StackCollector(BlockPos pos, ItemStack stack) {
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this.pos = pos;
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this.stack = stack;
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}
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public void tryMerge(ItemStack stack) {
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if (ItemEntity.areMergable(this.stack, stack)) {
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this.stack = ItemEntity.merge(this.stack, stack, 16);
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}
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}
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}
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}
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