mirror of
https://github.com/Sollace/Unicopia.git
synced 2024-11-25 06:17:59 +01:00
290 lines
9.3 KiB
Java
290 lines
9.3 KiB
Java
package com.minelittlepony.unicopia.projectile;
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import java.util.function.Consumer;
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import org.jetbrains.annotations.Nullable;
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import com.minelittlepony.unicopia.Affinity;
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import com.minelittlepony.unicopia.ability.magic.Affine;
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import com.minelittlepony.unicopia.ability.magic.Caster;
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import com.minelittlepony.unicopia.ability.magic.Levelled;
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import com.minelittlepony.unicopia.ability.magic.SpellContainer;
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import com.minelittlepony.unicopia.ability.magic.SpellPredicate;
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import com.minelittlepony.unicopia.ability.magic.spell.Situation;
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import com.minelittlepony.unicopia.ability.magic.spell.Spell;
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import com.minelittlepony.unicopia.ability.magic.spell.effect.SpellType;
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import com.minelittlepony.unicopia.entity.EntityPhysics;
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import com.minelittlepony.unicopia.entity.EntityReference;
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import com.minelittlepony.unicopia.entity.Physics;
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import com.minelittlepony.unicopia.entity.UEntities;
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import com.minelittlepony.unicopia.item.UItems;
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import com.minelittlepony.unicopia.network.Channel;
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import com.minelittlepony.unicopia.network.MsgSpawnProjectile;
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import com.minelittlepony.unicopia.network.datasync.EffectSync;
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import net.minecraft.entity.Entity;
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import net.minecraft.entity.EntityType;
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import net.minecraft.entity.LivingEntity;
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import net.minecraft.entity.damage.DamageSource;
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import net.minecraft.entity.data.DataTracker;
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import net.minecraft.entity.data.TrackedData;
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import net.minecraft.entity.data.TrackedDataHandlerRegistry;
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import net.minecraft.entity.projectile.ProjectileEntity;
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import net.minecraft.entity.projectile.thrown.ThrownItemEntity;
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import net.minecraft.item.Item;
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import net.minecraft.item.ItemStack;
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import net.minecraft.item.Items;
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import net.minecraft.nbt.NbtCompound;
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import net.minecraft.network.Packet;
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import net.minecraft.particle.ItemStackParticleEffect;
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import net.minecraft.particle.ParticleEffect;
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import net.minecraft.particle.ParticleTypes;
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import net.minecraft.util.hit.BlockHitResult;
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import net.minecraft.util.hit.EntityHitResult;
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import net.minecraft.util.hit.HitResult;
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import net.minecraft.util.math.Vec3d;
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import net.minecraft.world.World;
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/**
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* A generalised version of Mojang's projectile entity class with added support for a custom appearance and water phobia.
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*
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* Can also carry a spell if needed.
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*/
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public class MagicProjectileEntity extends ThrownItemEntity implements Caster<LivingEntity> {
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private static final TrackedData<Float> DAMAGE = DataTracker.registerData(MagicProjectileEntity.class, TrackedDataHandlerRegistry.FLOAT);
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private static final TrackedData<Float> GRAVITY = DataTracker.registerData(MagicProjectileEntity.class, TrackedDataHandlerRegistry.FLOAT);
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private static final TrackedData<Boolean> HYDROPHOBIC = DataTracker.registerData(MagicProjectileEntity.class, TrackedDataHandlerRegistry.BOOLEAN);
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private static final TrackedData<NbtCompound> EFFECT = DataTracker.registerData(MagicProjectileEntity.class, TrackedDataHandlerRegistry.TAG_COMPOUND);
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private static final LevelStore LEVELS = Levelled.fixed(1);
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private final EffectSync effectDelegate = new EffectSync(this, EFFECT);
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private final EntityPhysics<MagicProjectileEntity> physics = new EntityPhysics<>(this, GRAVITY, false);
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private final EntityReference<Entity> homingTarget = new EntityReference<>();
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public MagicProjectileEntity(EntityType<MagicProjectileEntity> type, World world) {
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super(type, world);
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}
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public MagicProjectileEntity(World world, LivingEntity thrower) {
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super(UEntities.THROWN_ITEM, thrower, world);
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}
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@Override
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protected void initDataTracker() {
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super.initDataTracker();
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getDataTracker().startTracking(GRAVITY, 1F);
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getDataTracker().startTracking(DAMAGE, 0F);
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getDataTracker().startTracking(EFFECT, new NbtCompound());
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getDataTracker().startTracking(HYDROPHOBIC, false);
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}
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@Override
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protected Item getDefaultItem() {
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switch (getSpellSlot().get(false).map(Spell::getAffinity).orElse(Affinity.NEUTRAL)) {
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case GOOD: return Items.SNOWBALL;
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case BAD: return Items.MAGMA_CREAM;
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default: return Items.AIR;
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}
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}
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@Override
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public Entity getEntity() {
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return this;
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}
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@Override
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public void setMaster(LivingEntity owner) {
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setOwner(owner);
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}
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public void setHomingTarget(@Nullable Entity target) {
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homingTarget.set(target);
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}
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@Override
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public LivingEntity getMaster() {
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return (LivingEntity)getOwner();
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}
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@Override
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public LevelStore getLevel() {
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return LEVELS;
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}
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@Override
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public Physics getPhysics() {
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return physics;
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}
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@Override
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public Affinity getAffinity() {
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return getSpellSlot().get(true).map(Affine::getAffinity).orElse(Affinity.NEUTRAL);
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}
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@Override
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public SpellContainer getSpellSlot() {
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return effectDelegate;
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}
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@Override
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public boolean subtractEnergyCost(double amount) {
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return Caster.of(getMaster()).filter(c -> c.subtractEnergyCost(amount)).isPresent();
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}
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public void addThrowDamage(float damage) {
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setThrowDamage(getThrowDamage() + damage);
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}
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public void setThrowDamage(float damage) {
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getDataTracker().set(DAMAGE, Math.max(0, damage));
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}
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public float getThrowDamage() {
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return getDataTracker().get(DAMAGE);
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}
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public void setHydrophobic() {
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getDataTracker().set(HYDROPHOBIC, true);
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}
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public boolean getHydrophobic() {
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return getDataTracker().get(HYDROPHOBIC);
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}
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@Override
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public void tick() {
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if (!world.isClient() && !homingTarget.isPresent(world)) {
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if (getVelocity().length() < 0.01) {
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discard();
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}
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}
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super.tick();
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if (getOwner() == null) {
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return;
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}
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getSpellSlot().get(true).filter(spell -> spell.tick(this, Situation.PROJECTILE));
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if (getHydrophobic()) {
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if (world.getBlockState(getBlockPos()).getMaterial().isLiquid()) {
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Vec3d vel = getVelocity();
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double velY = vel.y;
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velY *= -1;
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if (!hasNoGravity()) {
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velY += 0.16;
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}
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setVelocity(new Vec3d(vel.x, velY, vel.z));
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}
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}
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homingTarget.ifPresent(world, e -> {
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setNoGravity(true);
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noClip = true;
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setVelocity(getVelocity().add(e.getPos().subtract(getPos()).normalize().multiply(0.2)).multiply(0.6, 0.6, 0.6));
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});
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}
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private ParticleEffect getParticleParameters() {
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ItemStack stack = getItem();
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if (stack.isEmpty()) {
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return ParticleTypes.ITEM_SNOWBALL;
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}
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if (stack.getItem() == UItems.FILLED_JAR) {
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stack = UItems.EMPTY_JAR.getDefaultStack();
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}
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return new ItemStackParticleEffect(ParticleTypes.ITEM, stack);
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}
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@Override
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public void handleStatus(byte id) {
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if (id == 3) {
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ParticleEffect effect = getParticleParameters();
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for(int i = 0; i < 8; i++) {
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world.addParticle(effect, getX(), getY(), getZ(), 0, 0, 0);
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}
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}
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}
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@Override
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public void readCustomDataFromNbt(NbtCompound compound) {
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super.readCustomDataFromNbt(compound);
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physics.fromNBT(compound);
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homingTarget.fromNBT(compound.getCompound("homingTarget"));
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if (compound.contains("effect")) {
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getSpellSlot().put(SpellType.fromNBT(compound.getCompound("effect")));
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}
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}
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@Override
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public void writeCustomDataToNbt(NbtCompound compound) {
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super.writeCustomDataToNbt(compound);
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physics.toNBT(compound);
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compound.put("homingTarget", homingTarget.toNBT());
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getSpellSlot().get(true).ifPresent(effect -> {
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compound.put("effect", SpellType.toNBT(effect));
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});
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}
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@Override
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protected void onCollision(HitResult result) {
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if (!isRemoved()) {
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discard();
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super.onCollision(result);
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if (!world.isClient()) {
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world.sendEntityStatus(this, (byte)3);
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discard();
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}
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}
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}
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@Override
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protected void onBlockHit(BlockHitResult hit) {
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super.onBlockHit(hit);
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forEachDelegates(effect -> effect.onImpact(this, hit.getBlockPos(), world.getBlockState(hit.getBlockPos())));
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}
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@Override
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protected void onEntityHit(EntityHitResult hit) {
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Entity entity = hit.getEntity();
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if (entity instanceof ProjectileEntity) {
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return;
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}
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if (entity != null) {
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float damage = getThrowDamage();
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if (damage > 0) {
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entity.damage(DamageSource.thrownProjectile(this, getOwner()), getThrowDamage());
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}
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forEachDelegates(effect -> effect.onImpact(this, entity));
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}
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}
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protected void forEachDelegates(Consumer<ProjectileDelegate> consumer) {
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getSpellSlot().get(SpellPredicate.HAS_PROJECTILE_EVENTS, true).ifPresent(consumer);
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if (getItem().getItem() instanceof ProjectileDelegate) {
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consumer.accept(((ProjectileDelegate)getItem().getItem()));
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}
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}
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@Override
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public Packet<?> createSpawnPacket() {
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return Channel.SERVER_SPAWN_PROJECTILE.toPacket(new MsgSpawnProjectile(this));
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}
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}
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