package micdoodle8.mods.galacticraft.api.vector;
import micdoodle8.mods.galacticraft.core.Constants;
import net.minecraft.block.Block;
import net.minecraft.block.state.IBlockState;
import net.minecraft.entity.Entity;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.util.*;
import net.minecraft.world.IBlockAccess;
import net.minecraft.world.World;
import org.apache.commons.lang3.builder.EqualsBuilder;
import org.apache.commons.lang3.builder.HashCodeBuilder;
import org.lwjgl.util.vector.Vector3f;
import java.util.List;
/**
* Vector3 Class is used for defining objects in a 3D space.
*
* @author Calclavia
*/
public class Vector3 implements Cloneable
{
public double x;
public double y;
public double z;
public Vector3(double x, double y, double z)
{
this.x = x;
this.y = y;
this.z = z;
}
public Vector3()
{
this(0, 0, 0);
}
public Vector3(Vector3 vector)
{
this(vector.x, vector.y, vector.z);
}
public Vector3(double amount)
{
this(amount, amount, amount);
}
public Vector3(Entity par1)
{
this(par1.posX, par1.posY, par1.posZ);
}
public Vector3(BlockPos pos)
{
this(pos.getX(), pos.getY(), pos.getZ());
}
public Vector3(TileEntity par1)
{
this(par1.getPos());
}
public Vector3(Vec3 par1)
{
this(par1.xCoord, par1.yCoord, par1.zCoord);
}
public Vector3(MovingObjectPosition par1)
{
this(par1.getBlockPos());
}
public Vector3(EnumFacing direction)
{
this(direction.getFrontOffsetX(), direction.getFrontOffsetY(), direction.getFrontOffsetZ());
}
/**
* Loads a Vector3 from an NBT compound.
*/
public Vector3(NBTTagCompound nbt)
{
this(nbt.getDouble("x"), nbt.getDouble("y"), nbt.getDouble("z"));
}
/**
* Returns the coordinates as integers, ideal for block placement.
*/
public int intX()
{
return (int) Math.floor(this.x);
}
public int intY()
{
return (int) Math.floor(this.y);
}
public int intZ()
{
return (int) Math.floor(this.z);
}
public float floatX()
{
return (float) this.x;
}
public float floatY()
{
return (float) this.y;
}
public float floatZ()
{
return (float) this.z;
}
/**
* Makes a new copy of this Vector. Prevents variable referencing problems.
*/
@Override
public final Vector3 clone()
{
return new Vector3(this);
}
/**
* Easy block access functions.
*
* @param world
* @return
*/
public Block getBlock(IBlockAccess world)
{
return world.getBlockState(new BlockPos(this.intX(), this.intY(), this.intZ())).getBlock();
}
public IBlockState getBlockMetadata(IBlockAccess world)
{
return world.getBlockState(new BlockPos(this.intX(), this.intY(), this.intZ()));
}
public TileEntity getTileEntity(IBlockAccess world)
{
return world.getTileEntity(new BlockPos(this.intX(), this.intY(), this.intZ()));
}
public boolean setBlock(World world, IBlockState state, int notify)
{
return world.setBlockState(new BlockPos(this.intX(), this.intY(), this.intZ()), state, notify);
}
public boolean setBlock(World world, IBlockState state)
{
return this.setBlock(world, state, 3);
}
/**
* ---------------------- CONVERSION FUNCTIONS ----------------------------
*/
/**
* Converts this Vector3 into a Vector2 by dropping the Y axis.
*/
public Vector2 toVector2()
{
return new Vector2(this.x, this.z);
}
/**
* Converts this vector three into a Minecraft Vec3 object
*/
public Vec3 toVec3()
{
return new Vec3(this.x, this.y, this.z);
}
/**
* Converts Vector3 into a EnumFacing.
*/
public EnumFacing toEnumFacing()
{
for (EnumFacing direction : EnumFacing.VALUES)
{
if (this.x == direction.getFrontOffsetX() && this.y == direction.getFrontOffsetY() && this.z == direction.getFrontOffsetZ())
{
return direction;
}
}
return null;
}
public double getMagnitude()
{
return Math.sqrt(this.getMagnitudeSquared());
}
public double getMagnitudeSquared()
{
return this.x * this.x + this.y * this.y + this.z * this.z;
}
public Vector3 normalize()
{
double d = this.getMagnitude();
if (d != 0)
{
this.scale(1 / d);
}
return this;
}
/**
* Gets the distance between two vectors
*
* @return The distance
*/
public static double distance(Vector3 vec1, Vector3 vec2)
{
return vec1.distance(vec2);
}
@Deprecated
public double distanceTo(Vector3 vector3)
{
return this.distance(vector3);
}
public double distance(Vector3 compare)
{
Vector3 difference = this.clone().difference(compare);
return difference.getMagnitude();
}
/**
* Multiplies the vector by negative one.
*/
public Vector3 invert()
{
this.scale(-1);
return this;
}
public Vector3 translate(Vector3 par1)
{
this.x += par1.x;
this.y += par1.y;
this.z += par1.z;
return this;
}
public Vector3 translate(double par1)
{
this.x += par1;
this.y += par1;
this.z += par1;
return this;
}
public static Vector3 translate(Vector3 translate, Vector3 par1)
{
translate.x += par1.x;
translate.y += par1.y;
translate.z += par1.z;
return translate;
}
public static Vector3 translate(Vector3 translate, double par1)
{
translate.x += par1;
translate.y += par1;
translate.z += par1;
return translate;
}
@Deprecated
public Vector3 add(Vector3 amount)
{
return this.translate(amount);
}
@Deprecated
public Vector3 add(double amount)
{
return this.translate(amount);
}
@Deprecated
public Vector3 subtract(Vector3 amount)
{
return this.translate(amount.clone().invert());
}
@Deprecated
public Vector3 subtract(double amount)
{
return this.translate(-amount);
}
public Vector3 difference(Vector3 amount)
{
return this.translate(amount.clone().invert());
}
public Vector3 difference(double amount)
{
return this.translate(-amount);
}
public Vector3 scale(double amount)
{
this.x *= amount;
this.y *= amount;
this.z *= amount;
return this;
}
public Vector3 scale(Vector3 amount)
{
this.x *= amount.x;
this.y *= amount.y;
this.z *= amount.z;
return this;
}
public static Vector3 scale(Vector3 vec, double amount)
{
return vec.scale(amount);
}
public static Vector3 scale(Vector3 vec, Vector3 amount)
{
return vec.scale(amount);
}
@Deprecated
public Vector3 multiply(double amount)
{
return this.scale(amount);
}
@Deprecated
public Vector3 multiply(Vector3 amount)
{
return this.scale(amount);
}
/**
* Static versions of a lot of functions
*/
public static Vector3 subtract(Vector3 par1, Vector3 par2)
{
return new Vector3(par1.x - par2.x, par1.y - par2.y, par1.z - par2.z);
}
@Deprecated
public static Vector3 add(Vector3 par1, Vector3 par2)
{
return new Vector3(par1.x + par2.x, par1.y + par2.y, par1.z + par2.z);
}
@Deprecated
public static Vector3 add(Vector3 par1, double par2)
{
return new Vector3(par1.x + par2, par1.y + par2, par1.z + par2);
}
@Deprecated
public static Vector3 multiply(Vector3 vec1, Vector3 vec2)
{
return new Vector3(vec1.x * vec2.x, vec1.y * vec2.y, vec1.z * vec2.z);
}
@Deprecated
public static Vector3 multiply(Vector3 vec1, double vec2)
{
return new Vector3(vec1.x * vec2, vec1.y * vec2, vec1.z * vec2);
}
public Vector3 round()
{
return new Vector3(Math.round(this.x), Math.round(this.y), Math.round(this.z));
}
public Vector3 ceil()
{
return new Vector3(Math.ceil(this.x), Math.ceil(this.y), Math.ceil(this.z));
}
public Vector3 floor()
{
return new Vector3(Math.floor(this.x), Math.floor(this.y), Math.floor(this.z));
}
public Vector3 toRound()
{
this.x = Math.round(this.x);
this.y = Math.round(this.y);
this.z = Math.round(this.z);
return this;
}
public Vector3 toCeil()
{
this.x = Math.ceil(this.x);
this.y = Math.ceil(this.y);
this.z = Math.ceil(this.z);
return this;
}
public Vector3 toFloor()
{
this.x = Math.floor(this.x);
this.y = Math.floor(this.y);
this.z = Math.floor(this.z);
return this;
}
/**
* Gets all entities inside of this position in block space.
*/
@SuppressWarnings("unchecked")
public List<Entity> getEntitiesWithin(World worldObj, Class<? extends Entity> par1Class)
{
return worldObj.getEntitiesWithinAABB(par1Class, AxisAlignedBB.fromBounds(this.intX(), this.intY(), this.intZ(), this.intX() + 1, this.intY() + 1, this.intZ() + 1));
}
/**
* Gets a position relative to a position's side
*
* @return The position relative to the original position's side
*/
public Vector3 modifyPositionFromSide(EnumFacing side, double amount)
{
return this.translate(new Vector3(side).scale(amount));
}
public Vector3 modifyPositionFromSide(EnumFacing side)
{
this.modifyPositionFromSide(side, 1);
return this;
}
/**
* Cross product functions
*
* @return The cross product between this vector and another.
*/
public Vector3 toCrossProduct(Vector3 compare)
{
double newX = this.y * compare.z - this.z * compare.y;
double newY = this.z * compare.x - this.x * compare.z;
double newZ = this.x * compare.y - this.y * compare.x;
this.x = newX;
this.y = newY;
this.z = newZ;
return this;
}
public Vector3 crossProduct(Vector3 compare)
{
return this.clone().toCrossProduct(compare);
}
public Vector3 xCrossProduct()
{
return new Vector3(0.0D, this.z, -this.y);
}
public Vector3 zCrossProduct()
{
return new Vector3(-this.y, this.x, 0.0D);
}
public double dotProduct(Vector3 vec2)
{
return this.x * vec2.x + this.y * vec2.y + this.z * vec2.z;
}
/**
* @return The perpendicular vector.
*/
public Vector3 getPerpendicular()
{
if (this.z == 0.0F)
{
return this.zCrossProduct();
}
return this.xCrossProduct();
}
/**
* @return True if this Vector3 is zero.
*/
public boolean isZero()
{
return this.x == 0 && this.y == 0 && this.z == 0;
}
/**
* Rotate by a this vector around an axis.
*
* @return The new Vector3 rotation.
*/
public Vector3 rotate(float angle, Vector3 axis)
{
return Vector3.translateMatrix(Vector3.getRotationMatrix(angle, axis), this.clone());
}
public double[] getRotationMatrix(float angle)
{
double[] matrix = new double[16];
Vector3 axis = this.clone().normalize();
double x = axis.x;
double y = axis.y;
double z = axis.z;
angle /= Constants.RADIANS_TO_DEGREES;
float cos = MathHelper.cos(angle);
float ocos = 1.0F - cos;
float sin = MathHelper.sin(angle);
matrix[0] = x * x * ocos + cos;
matrix[1] = y * x * ocos + z * sin;
matrix[2] = x * z * ocos - y * sin;
matrix[4] = x * y * ocos - z * sin;
matrix[5] = y * y * ocos + cos;
matrix[6] = y * z * ocos + x * sin;
matrix[8] = x * z * ocos + y * sin;
matrix[9] = y * z * ocos - x * sin;
matrix[10] = z * z * ocos + cos;
matrix[15] = 1.0F;
return matrix;
}
public static Vector3 translateMatrix(double[] matrix, Vector3 translation)
{
double x = translation.x * matrix[0] + translation.y * matrix[1] + translation.z * matrix[2] + matrix[3];
double y = translation.x * matrix[4] + translation.y * matrix[5] + translation.z * matrix[6] + matrix[7];
double z = translation.x * matrix[8] + translation.y * matrix[9] + translation.z * matrix[10] + matrix[11];
translation.x = x;
translation.y = y;
translation.z = z;
return translation;
}
public static double[] getRotationMatrix(float angle, Vector3 axis)
{
return axis.getRotationMatrix(angle);
}
/**
* Rotates this Vector by a yaw, pitch and roll value.
*/
public void rotate(double yaw, double pitch, double roll)
{
double yawRadians = Math.toRadians(yaw);
double pitchRadians = Math.toRadians(pitch);
double rollRadians = Math.toRadians(roll);
double x = this.x;
double y = this.y;
double z = this.z;
this.x = x * Math.cos(yawRadians) * Math.cos(pitchRadians) + z * (Math.cos(yawRadians) * Math.sin(pitchRadians) * Math.sin(rollRadians) - Math.sin(yawRadians) * Math.cos(rollRadians)) + y * (Math.cos(yawRadians) * Math.sin(pitchRadians) * Math.cos(rollRadians) + Math.sin(yawRadians) * Math.sin(rollRadians));
this.z = x * Math.sin(yawRadians) * Math.cos(pitchRadians) + z * (Math.sin(yawRadians) * Math.sin(pitchRadians) * Math.sin(rollRadians) + Math.cos(yawRadians) * Math.cos(rollRadians)) + y * (Math.sin(yawRadians) * Math.sin(pitchRadians) * Math.cos(rollRadians) - Math.cos(yawRadians) * Math.sin(rollRadians));
this.y = -x * Math.sin(pitchRadians) + z * Math.cos(pitchRadians) * Math.sin(rollRadians) + y * Math.cos(pitchRadians) * Math.cos(rollRadians);
}
/**
* Rotates a point by a yaw and pitch around the anchor 0,0 by a specific
* angle.
*/
public void rotate(double yaw, double pitch)
{
this.rotate(yaw, pitch, 0);
}
public void rotate(double yaw)
{
double yawRadians = Math.toRadians(yaw);
double x = this.x;
double z = this.z;
if (yaw != 0)
{
this.x = x * Math.cos(yawRadians) - z * Math.sin(yawRadians);
this.z = x * Math.sin(yawRadians) + z * Math.cos(yawRadians);
}
}
/**
* Gets the delta look position based on the rotation yaw and pitch.
* Minecraft coordinates are messed up. Y and Z are flipped. Yaw is
* displaced by 90 degrees. Pitch is inversed.
*
* @param rotationYaw
* @param rotationPitch
*/
public static Vector3 getDeltaPositionFromRotation(float rotationYaw, float rotationPitch)
{
return new Vector3(Math.cos(Math.toRadians(rotationYaw + 90)), Math.sin(Math.toRadians(-rotationPitch)), Math.sin(Math.toRadians(rotationYaw + 90)));
}
/**
* Gets the angle between this vector and another vector.
*
* @return Angle in degrees
*/
public double getAngle(Vector3 vec2)
{
return Vector3.anglePreNorm(this.clone().normalize(), vec2.clone().normalize());
}
public static double getAngle(Vector3 vec1, Vector3 vec2)
{
return vec1.getAngle(vec2);
}
public double anglePreNorm(Vector3 vec2)
{
return Math.acos(this.dotProduct(vec2));
}
public static double anglePreNorm(Vector3 vec1, Vector3 vec2)
{
return Math.acos(vec1.clone().dotProduct(vec2));
}
/**
* Loads a Vector3 from an NBT compound.
*/
@Deprecated
public static Vector3 readFromNBT(NBTTagCompound nbt)
{
return new Vector3(nbt);
}
/**
* Saves this Vector3 to disk
*/
public NBTTagCompound writeToNBT(NBTTagCompound nbt)
{
nbt.setDouble("x", this.x);
nbt.setDouble("y", this.y);
nbt.setDouble("z", this.z);
return nbt;
}
public static Vector3 UP()
{
return new Vector3(0, 1, 0);
}
public static Vector3 DOWN()
{
return new Vector3(0, -1, 0);
}
public static Vector3 NORTH()
{
return new Vector3(0, 0, -1);
}
public static Vector3 SOUTH()
{
return new Vector3(0, 0, 1);
}
public static Vector3 WEST()
{
return new Vector3(-1, 0, 0);
}
public static Vector3 EAST()
{
return new Vector3(1, 0, 0);
}
@Deprecated
public MovingObjectPosition rayTraceEntities(World world, float rotationYaw, float rotationPitch, boolean collisionFlag, double reachDistance)
{
return this.rayTraceEntities(world, rotationYaw, rotationPitch, reachDistance);
}
public MovingObjectPosition rayTraceEntities(World world, float rotationYaw, float rotationPitch, double reachDistance)
{
return this.rayTraceEntities(world, Vector3.getDeltaPositionFromRotation(rotationYaw, rotationPitch).scale(reachDistance));
}
/**
* Does an entity raytrace.
*
* @param world - The world object.
* @param target - The rotation in terms of Vector3. Convert using
* getDeltaPositionFromRotation()
* @return The target hit.
*/
public MovingObjectPosition rayTraceEntities(World world, Vector3 target)
{
MovingObjectPosition pickedEntity = null;
Vec3 startingPosition = this.toVec3();
Vec3 look = target.toVec3();
double reachDistance = this.distance(target);
Vec3 reachPoint = new Vec3(startingPosition.xCoord + look.xCoord * reachDistance, startingPosition.yCoord + look.yCoord * reachDistance, startingPosition.zCoord + look.zCoord * reachDistance);
double checkBorder = 1.1 * reachDistance;
AxisAlignedBB boxToScan = AxisAlignedBB.fromBounds(-checkBorder, -checkBorder, -checkBorder, checkBorder, checkBorder, checkBorder).offset(this.x, this.y, this.z);
List<Entity> entitiesHit = world.getEntitiesWithinAABBExcludingEntity(null, boxToScan);
double closestEntity = reachDistance;
if (entitiesHit == null || entitiesHit.isEmpty())
{
return null;
}
for (Entity entityHit : entitiesHit)
{
if (entityHit != null && entityHit.canBeCollidedWith() && entityHit.getCollisionBoundingBox() != null)
{
float border = entityHit.getCollisionBorderSize();
AxisAlignedBB aabb = entityHit.getEntityBoundingBox().expand(border, border, border);
MovingObjectPosition hitMOP = aabb.calculateIntercept(startingPosition, reachPoint);
if (hitMOP != null)
{
if (aabb.isVecInside(startingPosition))
{
if (0.0D < closestEntity || closestEntity == 0.0D)
{
pickedEntity = new MovingObjectPosition(entityHit);
if (pickedEntity != null)
{
pickedEntity.hitVec = hitMOP.hitVec;
closestEntity = 0.0D;
}
}
}
else
{
double distance = startingPosition.distanceTo(hitMOP.hitVec);
if (distance < closestEntity || closestEntity == 0.0D)
{
pickedEntity = new MovingObjectPosition(entityHit);
pickedEntity.hitVec = hitMOP.hitVec;
closestEntity = distance;
}
}
}
}
}
return pickedEntity;
}
@Override
public int hashCode()
{
return new HashCodeBuilder().append(this.x).append(this.y).append(this.z).hashCode();
}
@Override
public boolean equals(Object o)
{
if (o instanceof Vector3)
{
Vector3 vector3 = (Vector3) o;
return new EqualsBuilder().append(this.x, vector3.x).append(this.y, vector3.y).append(this.z, vector3.z).isEquals();
}
return false;
}
@Override
public String toString()
{
return "Vector3 [" + this.x + "," + this.y + "," + this.z + "]";
}
public Vector3f toVector3f()
{
return new Vector3f((float)this.x, (float)this.y, (float)this.z);
}
}