<?php

// explore.php :: Handles all map exploring, chances to fight, etc.

function move() {
	global $controlrow;

    // Early exit if fighting
    if (user()->currentaction == 'Fighting') redirect('/fight');

    // Validate direction
    $form = validate($_POST, ['direction' => ['in:north,west,east,south']]);
    if (!$form['valid']) display(ul_from_validate_errors($form['errors']), 'Move Error');

    // Current game state
    $game_size = $controlrow['gamesize'];
    $latitude = user('latitude');
    $longitude = user('longitude');
    $direction = $form['data']['direction'];

    // Calculate new coordinates with boundary checks
    switch ($direction) {
        case 'north':
            $latitude = min($latitude + 1, $game_size);
            break;
        case 'south':
            $latitude = max($latitude - 1, -$game_size);
            break;
        case 'east':
            $longitude = min($longitude + 1, $game_size);
            break;
        case 'west':
            $longitude = max($longitude - 1, -$game_size);
            break;
    }

    // Check for town
    $town = get_town_by_xy($longitude, $latitude);
    if ($town !== false) {
        Towns\travelto($town['id'], false);
        return;
    }

    // Determine action (1 in 5 chance of fighting)
    $action = (rand(1, 5) === 1)
        ? "currentaction='Fighting', currentfight='1',"
        : "currentaction='Exploring',";

    // Update user's position
    db()->query(
        "UPDATE users SET $action latitude = ?, longitude = ?, dropcode = 0 WHERE id = ?;",
        [$latitude, $longitude, user()->id]
    );

    redirect('/');
}