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Location.java
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Location.java
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package com.elvarg.game.model;
import com.elvarg.util.Misc;
import org.checkerframework.checker.nullness.qual.Nullable;
/**
* Represents a single world tile position.
*
* @author relex lawl
*/
public class Location {
/**
* The x coordinate of the position.
*/
private int x;
/**
* The y coordinate of the position.
*/
private int y;
/**
* The height level of the position.
*/
private int z;
/**
* The Position constructor.
*
* @param x The x-type coordinate of the position.
* @param y The y-type coordinate of the position.
* @param z The height of the position.
*/
public Location(int x, int y, int z) {
this.x = x;
this.y = y;
this.z = z;
}
/**
* The Position constructor.
*
* @param x The x-type coordinate of the position.
* @param y The y-type coordinate of the position.
*/
public Location(int x, int y) {
this(x, y, 0);
}
/**
* Gets the x coordinate of this position.
*
* @return The associated x coordinate.
*/
public int getX() {
return x;
}
/**
* Sets the x coordinate of this position.
*
* @return The Position instance.
*/
public Location setX(int x) {
this.x = x;
return this;
}
/**
* Gets the y coordinate of this position.
*
* @return The associated y coordinate.
*/
public int getY() {
return y;
}
/**
* Sets the y coordinate of this position.
*
* @return The Position instance.
*/
public Location setY(int y) {
this.y = y;
return this;
}
/**
* Gets the height level of this position.
*
* @return The associated height level.
*/
public int getZ() {
return z;
}
/**
* Sets the height level of this position.
*
* @return The Position instance.
*/
public Location setZ(int z) {
this.z = z;
return this;
}
/**
* Sets the player's associated Position values.
*
* @param x The new x coordinate.
* @param y The new y coordinate.
* @param z The new height level.
*/
public void set(int x, int y, int z) {
this.x = x;
this.y = y;
this.z = z;
}
public void setAs(Location other) {
this.x = other.x;
this.y = other.y;
this.z = other.z;
}
/**
* Gets the local x coordinate relative to a specific region.
*
* @param position The region the coordinate will be relative to.
* @return The local x coordinate.
*/
public int getLocalX(Location position) {
return x - 8 * position.getRegionX();
}
/**
* Gets the local y coordinate relative to a specific region.
*
* @param position The region the coordinate will be relative to.
* @return The local y coordinate.
*/
public int getLocalY(Location position) {
return y - 8 * position.getRegionY();
}
/**
* Gets the local x coordinate relative to a specific region.
*
* @return The local x coordinate.
*/
public int getLocalX() {
return x - 8 * getRegionX();
}
/**
* Gets the local y coordinate relative to a specific region.
*
* @return The local y coordinate.
*/
public int getLocalY() {
return y - 8 * getRegionY();
}
/**
* Gets the region x coordinate.
*
* @return The region x coordinate.
*/
public int getRegionX() {
return (x >> 3) - 6;
}
/**
* Gets the region y coordinate.
*
* @return The region y coordinate.
*/
public int getRegionY() {
return (y >> 3) - 6;
}
/**
* Adds steps/coordinates to this position.
*/
public Location add(int x, int y) {
this.x += x;
this.y += y;
return this;
}
/**
* Adds steps/coordinates to this position.
*/
public Location add(int x, int y, int z) {
this.x += x;
this.y += y;
this.z += z;
return this;
}
public Location addX(int x) {
this.x += x;
return this;
}
public Location addY(int y) {
this.y += y;
return this;
}
public Location transform(int x, int y) {
return clone().addX(x).addY(y);
}
public boolean isPerpendicularTo(Location other) {
Location delta = Misc.delta(this, other);
return delta.getX() != delta.getY() && delta.getX() == 0 || delta.getY() == 0;
}
/**
* Checks if the position is within distance of another.
*
* @param other The other position.
* @param distance The distance.
* @return {@code true} if so, {@code false} if not.
*/
public boolean isWithinDistance(Location other, int distance) {
if (z != other.getZ()) {
return false;
}
int deltaX = Math.abs(x - other.x);
int deltaY = Math.abs(y - other.y);
return deltaX <= distance && deltaY <= distance;
}
/**
* Checks if this location is within interaction range of another.
*
* @param other The other location.
* @return <code>true</code> if the location is in range,
* <code>false</code> if not.
*/
public boolean isWithinInteractionDistance(Location other) {
if (z != other.z) {
return false;
}
int deltaX = other.x - x, deltaY = other.y - y;
return deltaX <= 2 && deltaX >= -3 && deltaY <= 2 && deltaY >= -3;
}
/**
* Gets the distance between this position and another position. Only X and
* Y are considered (i.e. 2 dimensions).
*
* @param other The other position.
* @return The distance.
*/
public int getDistance(Location other) {
int deltaX = x - other.x;
int deltaY = y - other.y;
return (int) Math.ceil(Math.sqrt(deltaX * deltaX + deltaY * deltaY));
}
/**
* Increments the {@code X}, {@code Y}, and {@code Z} coordinate values
* within this container by {@code amountX}, {@code amountY}, and
* {@code amountZ}.
* @param position the position to gather the amount to increment the coordinate by.
* @return an instance of this position.
*/
public final Location move(Location position) {
int x = (this.x + position.getX());
int y = (this.y + position.getY());
int z = (this.z + position.getZ());
return new Location(x, y, z);
}
/**
* Increments the {@code X} and {@code Y} coordinate values within this
* container by deltas of the set {@code Direction}.
* @param direction the direction to move.
* @return an instance of this position.
*/
public final Location move(Direction direction) {
return move(new Location(direction.getX(), direction.getY(), 0));
}
public static Location delta(Location a, Location b) {
return new Location(b.x - a.x, b.y - a.y);
}
public double distanceToPoint(int pointX, int pointY) {
return Math.sqrt(Math.pow(x - pointX, 2)
+ Math.pow(y - pointY, 2));
}
public int calculateDistance(Location other) {
int xDiff = getX() - other.getX();
int yDiff = getY() - other.getY();
return (int)Math.sqrt(xDiff * xDiff + yDiff * yDiff);
}
public static int calculateDistance(Location[] tiles, Location[] otherTiles) {
int lowestCount = Integer.MAX_VALUE;
for (Location tile : tiles) {
for (Location toTile : otherTiles) {
if (tile == toTile) {
return 0;
}
int distance = tile.calculateDistance(toTile);
if (distance < lowestCount) {
lowestCount = distance;
}
}
}
return lowestCount;
}
@Override
public Location clone() {
return new Location(x, y, z);
}
@Override
public String toString() {
return "[" + x + ", " + y + ", " + z + "]";
}
@Override
public int hashCode() {
return z << 30 | x << 15 | y;
}
@Override
public boolean equals(Object other) {
if (!(other instanceof Location)) {
return false;
}
Location position = (Location) other;
return position.x == x && position.y == y && position.z == z;
}
public boolean isViewableFrom(Location other) {
if (this.getZ() != other.getZ())
return false;
Location p = Misc.delta(this, other);
return p.x <= 15 && p.x >= -15 && p.y <= 15 && p.y >= -15;
}
public Location translate(int x, int y) {
return translate(x, y, 0);
}
public Location translate(int x, int y, int z) {
return new Location(this.x + x, this.y + y, this.z + z);
}
}