Electroblob77
298 lines
9.7 KiB
Java
298 lines
9.7 KiB
Java
package electroblob.wizardry.entity;
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import electroblob.wizardry.Wizardry;
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import electroblob.wizardry.registry.Spells;
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import electroblob.wizardry.spell.Spell;
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import electroblob.wizardry.util.AllyDesignationSystem;
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import electroblob.wizardry.util.MagicDamage;
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import electroblob.wizardry.util.NBTExtras;
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import electroblob.wizardry.util.WizardryUtilities;
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import io.netty.buffer.ByteBuf;
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import net.minecraft.block.Block;
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import net.minecraft.block.BlockFalling;
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import net.minecraft.block.material.Material;
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import net.minecraft.block.state.IBlockState;
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import net.minecraft.entity.Entity;
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import net.minecraft.entity.EntityLivingBase;
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import net.minecraft.entity.MoverType;
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import net.minecraft.entity.item.EntityFallingBlock;
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import net.minecraft.init.Blocks;
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import net.minecraft.nbt.NBTBase;
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import net.minecraft.nbt.NBTTagCompound;
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import net.minecraft.tileentity.TileEntity;
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import net.minecraft.util.EnumFacing;
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import net.minecraft.util.math.BlockPos;
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import net.minecraft.util.math.RayTraceResult;
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import net.minecraft.util.math.Vec3d;
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import net.minecraft.world.World;
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import net.minecraftforge.fml.common.ObfuscationReflectionHelper;
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import net.minecraftforge.fml.common.registry.IEntityAdditionalSpawnData;
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import java.lang.ref.WeakReference;
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import java.lang.reflect.Field;
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import java.util.List;
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import java.util.UUID;
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/** Custom extended version of {@link EntityFallingBlock} for use with the greater telekinesis spell. */
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public class EntityLevitatingBlock extends EntityFallingBlock implements IEntityAdditionalSpawnData {
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private static final Field fallTile;
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static {
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fallTile = ObfuscationReflectionHelper.findField(EntityFallingBlock.class, "field_175132_d");
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fallTile.setAccessible(true);
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}
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/** The entity that created this levitating block */
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private WeakReference<EntityLivingBase> caster;
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/**
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* The UUID of the caster. Note that this is only for loading purposes; during normal updates the actual entity
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* instance is stored (so that getEntityByUUID is not called constantly), so this will not always be synced (this is
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* why it is private).
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*/
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private UUID casterUUID;
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/** The damage multiplier for this levitating block, determined by the wand with which it was cast. */
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public float damageMultiplier = 1.0f;
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private int suspendTimer = 5;
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public EntityLevitatingBlock(World world){
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super(world);
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// EntityFallingBlock never uses this constructor so doesn't bother setting this, but we need to
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this.setSize(0.98F, 0.98F);
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}
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public EntityLevitatingBlock(World world, double x, double y, double z, IBlockState state){
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super(world, x, y, z, state);
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}
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/** Resets the suspension timer to 5 ticks, during which this block will not re-attach itself to the ground. */
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public void suspend(){
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suspendTimer = 5;
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}
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@Override
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public void onUpdate(){
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if(suspendTimer > 0){
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suspendTimer--;
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}
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if(this.getCaster() == null && this.casterUUID != null){
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Entity entity = WizardryUtilities.getEntityByUUID(world, casterUUID);
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if(entity instanceof EntityLivingBase){
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this.caster = new WeakReference<>((EntityLivingBase)entity);
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}
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}
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if(getBlock() != null){
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// === Copied from super ===
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Block block = getBlock().getBlock();
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if(getBlock().getMaterial() == Material.AIR){
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this.setDead();
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}else{
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this.prevPosX = this.posX;
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this.prevPosY = this.posY;
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this.prevPosZ = this.posZ;
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if(this.fallTime++ == 0){
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BlockPos blockpos = new BlockPos(this);
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if(this.world.getBlockState(blockpos).getBlock() == block){
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this.world.setBlockToAir(blockpos);
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}else if(!this.world.isRemote){
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this.setDead();
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return;
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}
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}
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if(!this.hasNoGravity()){
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this.motionY -= 0.03999999910593033D;
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}
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this.move(MoverType.SELF, this.motionX, this.motionY, this.motionZ);
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if(!this.world.isRemote){
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BlockPos blockpos1 = new BlockPos(this);
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boolean isConcrete = getBlock().getBlock() == Blocks.CONCRETE_POWDER;
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boolean isConcreteInWater = isConcrete && this.world.getBlockState(blockpos1).getMaterial() == Material.WATER;
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double d0 = this.motionX * this.motionX + this.motionY * this.motionY + this.motionZ * this.motionZ;
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if(isConcrete && d0 > 1.0D){
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RayTraceResult raytraceresult = this.world.rayTraceBlocks(new Vec3d(this.prevPosX, this.prevPosY, this.prevPosZ), new Vec3d(this.posX, this.posY, this.posZ), true);
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if(raytraceresult != null && this.world.getBlockState(raytraceresult.getBlockPos()).getMaterial() == Material.WATER){
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blockpos1 = raytraceresult.getBlockPos();
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isConcreteInWater = true;
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}
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}
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if(!this.onGround && !isConcreteInWater){
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if(this.fallTime > 100 && !this.world.isRemote && (blockpos1.getY() < 1 || blockpos1.getY() > 256) || this.fallTime > 600){
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this.setDead();
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}
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}else{
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IBlockState iblockstate = this.world.getBlockState(blockpos1);
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if(this.world.isAirBlock(new BlockPos(this.posX, this.posY - 0.009999999776482582D, this.posZ))){
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if(!isConcreteInWater && BlockFalling.canFallThrough(this.world.getBlockState(new BlockPos(this.posX, this.posY - 0.009999999776482582D, this.posZ)))){
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this.onGround = false;
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return;
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}
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}
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this.motionX *= 0.699999988079071D;
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this.motionZ *= 0.699999988079071D;
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this.motionY *= -0.5D;
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if(iblockstate.getBlock() != Blocks.PISTON_EXTENSION){
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if(suspendTimer == 0){
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this.setDead(); // Moved inside the above if statement
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if(this.world.mayPlace(block, blockpos1, true, EnumFacing.UP, null)
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&& (isConcreteInWater || !BlockFalling.canFallThrough(this.world.getBlockState(blockpos1.down())))
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&& this.world.setBlockState(blockpos1, getBlock(), 3)){
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if(block instanceof BlockFalling){
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((BlockFalling)block).onEndFalling(this.world, blockpos1, getBlock(), iblockstate);
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}
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if(this.tileEntityData != null && block.hasTileEntity(getBlock())){
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TileEntity tileentity = this.world.getTileEntity(blockpos1);
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if(tileentity != null){
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NBTTagCompound nbttagcompound = tileentity.writeToNBT(new NBTTagCompound());
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for(String s : this.tileEntityData.getKeySet()){
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NBTBase nbtbase = this.tileEntityData.getTag(s);
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if(!"x".equals(s) && !"y".equals(s) && !"z".equals(s)){
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NBTExtras.storeTagSafely(nbttagcompound, s, nbtbase.copy());
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}
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}
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tileentity.readFromNBT(nbttagcompound);
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tileentity.markDirty();
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}
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}
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}else{
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// Never drops the block, instead if it can't reattach to the world it breaks
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world.playEvent(2001, this.getPosition(), Block.getStateId(getBlock()));
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}
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}
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}
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}
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}
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this.motionX *= 0.9800000190734863D;
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this.motionY *= 0.9800000190734863D;
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this.motionZ *= 0.9800000190734863D;
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}
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// === End super copy ===
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}
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double velocitySquared = motionX * motionX + motionY * motionY + motionZ * motionZ;
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if(velocitySquared >= 0.2){
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List<Entity> list = this.world.getEntitiesWithinAABBExcludingEntity(this, this.getEntityBoundingBox());
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for(Entity entity : list){
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if(entity instanceof EntityLivingBase && isValidTarget(entity)){
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float damage = Spells.greater_telekinesis.getProperty(Spell.DAMAGE).floatValue() * damageMultiplier;
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damage *= Math.min(1, velocitySquared/0.4); // Reduce damage at low speeds
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entity.attackEntityFrom(MagicDamage.causeIndirectMagicDamage(this, getCaster(),
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MagicDamage.DamageType.FORCE), damage);
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double dx = -this.motionX;
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double dz;
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for(dz = -this.motionZ; dx * dx + dz * dz < 1.0E-4D; dz = (Math.random() - Math.random()) * 0.01D){
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dx = (Math.random() - Math.random()) * 0.01D;
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}
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((EntityLivingBase)entity).knockBack(this, 0.6f, dx, dz);
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}
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}
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}
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}
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/**
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* Returns the EntityLivingBase that created this construct, or null if it no longer exists. Cases where the entity
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* may no longer exist are: entity died or was deleted, mob despawned, player logged out, entity teleported to
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* another dimension, or this construct simply had no caster in the first place.
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*/
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public EntityLivingBase getCaster(){
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return caster == null ? null : caster.get();
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}
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public void setCaster(EntityLivingBase caster){
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if(getCaster() != caster) this.caster = new WeakReference<>(caster);
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}
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/**
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* Shorthand for {@link AllyDesignationSystem#isValidTarget(Entity, Entity)}, with the owner of this construct as the
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* attacker. Also allows subclasses to override it if they wish to do so.
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*/
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public boolean isValidTarget(Entity target){
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return AllyDesignationSystem.isValidTarget(this.getCaster(), target);
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}
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@Override
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protected void readEntityFromNBT(NBTTagCompound nbttagcompound){
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super.readEntityFromNBT(nbttagcompound);
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casterUUID = nbttagcompound.getUniqueId("casterUUID");
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damageMultiplier = nbttagcompound.getFloat("damageMultiplier");
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}
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@Override
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protected void writeEntityToNBT(NBTTagCompound nbttagcompound){
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super.writeEntityToNBT(nbttagcompound);
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if(this.getCaster() != null){
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nbttagcompound.setUniqueId("casterUUID", this.getCaster().getUniqueID());
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}
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nbttagcompound.setFloat("damageMultiplier", damageMultiplier);
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}
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@Override
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public void readSpawnData(ByteBuf buf){
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if(buf.isReadable()){
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Block block = Block.REGISTRY.getObjectById(buf.readInt());
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try{
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fallTile.set(this, block.getStateFromMeta(buf.readInt()));
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}catch(IllegalAccessException e){
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Wizardry.logger.error("Error reading levitating block data from packet: ", e);
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}
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}
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}
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@Override
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public void writeSpawnData(ByteBuf buf){
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if(getBlock() != null){
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buf.writeInt(Block.REGISTRY.getIDForObject(getBlock().getBlock()));
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buf.writeInt(getBlock().getBlock().getMetaFromState(getBlock()));
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}
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}
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}
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