package com.elvarg.game.model;

import com.elvarg.game.World;
import com.elvarg.game.entity.Entity;
import com.elvarg.game.entity.impl.Character;
import com.elvarg.game.entity.impl.player.Player;

/**
 * A graphic propelled through the air by some sort of spell, weapon, or other
 * miscellaneous force.
 *
 * @author lare96
 */
public final class Projectile {

    /**
     * The starting position of the projectile.
     */
    private final Position start;

    /**
     * The ending position of the projectile.
     */
    private final Position end;

    /**
     * The speed of the projectile.
     */
    private final int speed;

    /**
     * The id of the projectile.
     */
    private final int projectileId;

    /**
     * The starting height of the projectile.
     */
    private final int startHeight;

    /**
     * The ending height of the projectile.
     */
    private final int endHeight;

    /**
     * The lock on value of the projectile.
     */
    private final int lockon;

    /**
     * The delay of the projectile.
     */
    private final int delay;

    /**
     * The curve angle of the projectile.
     */
    private final int curve;

    /**
     * Create a new {@link Projectile}.
     *
     * @param start        the starting position of the projectile.
     * @param end          the ending position of the projectile.
     * @param lockon       the lock on value of the projectile.
     * @param projectileId the id of the projectile.
     * @param speed        the speed of the projectile.
     * @param delay        the delay of the projectile.
     * @param startHeight  the starting height of the projectile.
     * @param endHeight    the ending height of the projectile.
     * @param curve        the curve angle of the projectile.
     */
    public Projectile(Position start, Position end, int lockon, int projectileId, int delay, int speed, int startHeight,
                      int endHeight, int curve) {
        this.start = start;
        this.end = end;
        this.lockon = lockon;
        this.projectileId = projectileId;
        this.delay = delay;
        this.speed = speed;
        this.startHeight = startHeight;
        this.endHeight = endHeight;
        this.curve = curve;
    }

    /**
     * Create a new {@link Projectile}.
     *
     * @param source       the entity that is firing this projectile.
     * @param victim       the victim that this projectile is being fired at.
     * @param projectileId the id of the projectile.
     * @param speed        the speed of the projectile.
     * @param delay        the delay of the projectile.
     * @param startHeight  the starting height of the projectile.
     * @param endHeight    the ending height of the projectile.
     * @param curve        the curve angle of the projectile.
     */
    public Projectile(Character source, Entity victim, int projectileId, int delay, int speed, int startHeight,
                      int endHeight, int curve) {
        this(source.getPosition(), victim.getPosition(),
                (victim.isPlayer() ? -victim.getIndex() - 1 : victim.getIndex() + 1), projectileId, delay, speed,
                startHeight, endHeight, curve);
    }

    /**
     * Sends one projectiles using the values set when the {@link Projectile} was
     * constructed.
     */
    public void sendProjectile() {
        for (Player player : World.getPlayers()) {
            if (player == null) {
                continue;
            }
            if (start.isViewableFrom(player.getPosition())) {
                player.getPacketSender().sendProjectile(start, end, 0, speed, projectileId, startHeight, endHeight, lockon, delay);
            }
        }
    }
}