path: root/src/main/java/gtPlusPlus/core/entity/projectile/EntityToxinball.java

package gtPlusPlus.core.entity.projectile;

import java.util.List;

import net.minecraft.block.Block;
import net.minecraft.entity.Entity;
import net.minecraft.entity.EntityLivingBase;
import net.minecraft.entity.projectile.EntityFireball;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.nbt.NBTTagList;
import net.minecraft.util.AxisAlignedBB;
import net.minecraft.util.DamageSource;
import net.minecraft.util.MathHelper;
import net.minecraft.util.MovingObjectPosition;
import net.minecraft.util.Vec3;
import net.minecraft.world.World;

import cpw.mods.fml.relauncher.Side;
import cpw.mods.fml.relauncher.SideOnly;

public abstract class EntityToxinball extends EntityFireball {

    protected int entityX = -1;
    protected int entityY = -1;
    protected int entityZ = -1;
    private Block block;
    private boolean inGround;
    private int ticksAlive;
    private int ticksInAir;

    public EntityToxinball(World world) {
        super(world);
        this.setSize(1.0F, 1.0F);
    }

    @Override
    protected void entityInit() {}

    /**
     * Checks if the entity is in range to render by using the past in distance and comparing it to its average edge
     * length * 64 * renderDistanceWeight Args: distance
     */
    @Override
    @SideOnly(Side.CLIENT)
    public boolean isInRangeToRenderDist(double p_70112_1_) {
        double d1 = this.boundingBox.getAverageEdgeLength() * 4.0D;
        d1 *= 64.0D;
        return p_70112_1_ < d1 * d1;
    }

    public EntityToxinball(World world, double x, double y, double z, double f1, double f2, double f3) {
        super(world);
        this.setSize(1.0F, 1.0F);
        this.setLocationAndAngles(x, y, z, this.rotationYaw, this.rotationPitch);
        this.setPosition(x, y, z);
        double d6 = MathHelper.sqrt_double(f1 * f1 + f2 * f2 + f3 * f3);
        this.accelerationX = f1 / d6 * 0.1D;
        this.accelerationY = f2 / d6 * 0.1D;
        this.accelerationZ = f3 / d6 * 0.1D;
    }

    public EntityToxinball(World world, EntityLivingBase entity, double x, double y, double z) {
        super(world);
        this.shootingEntity = entity;
        this.setSize(1.0F, 1.0F);
        this.setLocationAndAngles(entity.posX, entity.posY, entity.posZ, entity.rotationYaw, entity.rotationPitch);
        this.setPosition(this.entityX, this.entityY, this.entityZ);
        this.yOffset = 0.0F;
        this.motionX = this.motionY = this.motionZ = 0.0D;
        x += this.rand.nextGaussian() * 0.4D;
        y += this.rand.nextGaussian() * 0.4D;
        z += this.rand.nextGaussian() * 0.4D;
        double d3 = MathHelper.sqrt_double(x * x + y * y + z * z);
        this.accelerationX = x / d3 * 0.1D;
        this.accelerationY = y / d3 * 0.1D;
        this.accelerationZ = z / d3 * 0.1D;
    }

    /**
     * Called to update the entity's position/logic.
     */
    @Override
    public void onUpdate() {
        if (!this.worldObj.isRemote && (this.shootingEntity != null && this.shootingEntity.isDead
            || !this.worldObj.blockExists(this.entityX, this.entityY, this.entityZ))) {
            this.setDead();
        } else {
            super.onUpdate();
            this.setFire(1);

            if (this.inGround) {
                if (this.worldObj.getBlock(this.entityX, this.entityY, this.entityZ) == this.block) {
                    ++this.ticksAlive;

                    if (this.ticksAlive == 600) {
                        this.setDead();
                    }

                    return;
                }

                this.inGround = false;
                this.motionX *= this.rand.nextFloat() * 0.2F;
                this.motionY *= this.rand.nextFloat() * 0.2F;
                this.motionZ *= this.rand.nextFloat() * 0.2F;
                this.ticksAlive = 0;
                this.ticksInAir = 0;
            } else {
                ++this.ticksInAir;
            }

            Vec3 vec3 = Vec3.createVectorHelper(this.entityX, this.entityY, this.entityZ);
            Vec3 vec31 = Vec3.createVectorHelper(
                this.entityX + this.motionX,
                this.entityY + this.motionY,
                this.entityZ + this.motionZ);
            MovingObjectPosition movingobjectposition = this.worldObj.rayTraceBlocks(vec3, vec31);
            vec3 = Vec3.createVectorHelper(this.entityX, this.entityY, this.entityZ);
            vec31 = Vec3.createVectorHelper(
                this.entityX + this.motionX,
                this.entityY + this.motionY,
                this.entityZ + this.motionZ);

            if (movingobjectposition != null) {
                vec31 = Vec3.createVectorHelper(
                    movingobjectposition.hitVec.xCoord,
                    movingobjectposition.hitVec.yCoord,
                    movingobjectposition.hitVec.zCoord);
            }

            Entity entity = null;
            List<?> list = this.worldObj.getEntitiesWithinAABBExcludingEntity(
                this,
                this.boundingBox.addCoord(this.motionX, this.motionY, this.motionZ)
                    .expand(1.0D, 1.0D, 1.0D));
            double d0 = 0.0D;

            for (Object o : list) {
                Entity entity1 = (Entity) o;

                if (entity1.canBeCollidedWith()
                    && (!entity1.isEntityEqual(this.shootingEntity) || this.ticksInAir >= 25)) {
                    float f = 0.3F;
                    AxisAlignedBB axisalignedbb = entity1.boundingBox.expand(f, f, f);
                    MovingObjectPosition movingobjectposition1 = axisalignedbb.calculateIntercept(vec3, vec31);

                    if (movingobjectposition1 != null) {
                        double d1 = vec3.distanceTo(movingobjectposition1.hitVec);

                        if (d1 < d0 || d0 == 0.0D) {
                            entity = entity1;
                            d0 = d1;
                        }
                    }
                }
            }

            if (entity != null) {
                movingobjectposition = new MovingObjectPosition(entity);
            }

            if (movingobjectposition != null) {
                this.onImpact(movingobjectposition);
            }

            this.entityX += this.motionX;
            this.entityY += this.motionY;
            this.entityZ += this.motionZ;
            float f1 = MathHelper.sqrt_double(this.motionX * this.motionX + this.motionZ * this.motionZ);
            this.rotationYaw = (float) (Math.atan2(this.motionZ, this.motionX) * 180.0D / Math.PI) + 90.0F;

            for (this.rotationPitch = (float) (Math.atan2(f1, this.motionY) * 180.0D / Math.PI)
                - 90.0F; this.rotationPitch - this.prevRotationPitch < -180.0F; this.prevRotationPitch -= 360.0F) {}

            while (this.rotationPitch - this.prevRotationPitch >= 180.0F) {
                this.prevRotationPitch += 360.0F;
            }

            while (this.rotationYaw - this.prevRotationYaw < -180.0F) {
                this.prevRotationYaw -= 360.0F;
            }

            while (this.rotationYaw - this.prevRotationYaw >= 180.0F) {
                this.prevRotationYaw += 360.0F;
            }

            this.rotationPitch = this.prevRotationPitch + (this.rotationPitch - this.prevRotationPitch) * 0.2F;
            this.rotationYaw = this.prevRotationYaw + (this.rotationYaw - this.prevRotationYaw) * 0.2F;
            float f2 = this.getMotionFactor();

            if (this.isInWater()) {
                for (int j = 0; j < 4; ++j) {
                    float f3 = 0.25F;
                    this.worldObj.spawnParticle(
                        "bubble",
                        this.entityX - this.motionX * f3,
                        this.entityY - this.motionY * f3,
                        this.entityZ - this.motionZ * f3,
                        this.motionX,
                        this.motionY,
                        this.motionZ);
                }

                f2 = 0.8F;
            }

            this.motionX += this.accelerationX;
            this.motionY += this.accelerationY;
            this.motionZ += this.accelerationZ;
            this.motionX *= f2;
            this.motionY *= f2;
            this.motionZ *= f2;
            this.worldObj.spawnParticle("smoke", this.entityX, this.entityY + 0.5D, this.entityZ, 0.0D, 0.0D, 0.0D);
            this.setPosition(this.entityX, this.entityY, this.entityZ);
        }
    }

    /**
     * Return the motion factor for this projectile. The factor is multiplied by the original motion.
     */
    @Override
    protected float getMotionFactor() {
        return 0.95F;
    }

    /**
     * Called when this EntityFireball hits a block or entity.
     */
    @Override
    protected abstract void onImpact(MovingObjectPosition p_70227_1_);

    /**
     * (abstract) Protected helper method to write subclass entity data to NBT.
     */
    @Override
    public void writeEntityToNBT(NBTTagCompound aTag) {
        aTag.setShort("xTile", (short) this.entityX);
        aTag.setShort("yTile", (short) this.entityY);
        aTag.setShort("zTile", (short) this.entityZ);
        aTag.setByte("inTile", (byte) Block.getIdFromBlock(this.block));
        aTag.setByte("inGround", (byte) (this.inGround ? 1 : 0));
        aTag.setTag("direction", this.newDoubleNBTList(this.motionX, this.motionY, this.motionZ));
    }

    /**
     * (abstract) Protected helper method to read subclass entity data from NBT.
     */
    @Override
    public void readEntityFromNBT(NBTTagCompound aTag) {
        this.entityX = aTag.getShort("xTile");
        this.entityY = aTag.getShort("yTile");
        this.entityZ = aTag.getShort("zTile");
        this.block = Block.getBlockById(aTag.getByte("inTile") & 255);
        this.inGround = aTag.getByte("inGround") == 1;

        if (aTag.hasKey("direction", 9)) {
            NBTTagList nbttaglist = aTag.getTagList("direction", 6);
            this.motionX = nbttaglist.func_150309_d(0);
            this.motionY = nbttaglist.func_150309_d(1);
            this.motionZ = nbttaglist.func_150309_d(2);
        } else {
            this.setDead();
        }
    }

    /**
     * Returns true if other Entities should be prevented from moving through this Entity.
     */
    @Override
    public boolean canBeCollidedWith() {
        return true;
    }

    @Override
    public float getCollisionBorderSize() {
        return 1.0F;
    }

    /**
     * Called when the entity is attacked.
     */
    @Override
    public boolean attackEntityFrom(DamageSource damage, float p_70097_2_) {
        if (this.isEntityInvulnerable()) {
            return false;
        } else {
            this.setBeenAttacked();

            if (damage.getEntity() != null) {
                Vec3 vec3 = damage.getEntity()
                    .getLookVec();

                if (vec3 != null) {
                    this.motionX = vec3.xCoord;
                    this.motionY = vec3.yCoord;
                    this.motionZ = vec3.zCoord;
                    this.accelerationX = this.motionX * 0.1D;
                    this.accelerationY = this.motionY * 0.1D;
                    this.accelerationZ = this.motionZ * 0.1D;
                }

                if (damage.getEntity() instanceof EntityLivingBase) {
                    this.shootingEntity = (EntityLivingBase) damage.getEntity();
                }

                return true;
            } else {
                return false;
            }
        }
    }

    @Override
    @SideOnly(Side.CLIENT)
    public float getShadowSize() {
        return 0.0F;
    }

    /**
     * Gets how bright this entity is.
     */
    @Override
    public float getBrightness(float p_70013_1_) {
        return 1.0F;
    }

    @Override
    @SideOnly(Side.CLIENT)
    public int getBrightnessForRender(float p_70070_1_) {
        return 15728880;
    }
}