* Edit: Memperbaiki kesalahan dalam javascript yang menyebabkan kesalahan pada firefox *
Sunting: baru saja menambahkan kemampuan untuk menskalakan heks ke kode sumber PHP. Tiny 1/2 ukuran atau 2x jumbo, terserah Anda :)
Saya tidak begitu yakin bagaimana cara menuliskan ini semua, tetapi ternyata lebih mudah hanya menulis kode untuk contoh langsung lengkap. Halaman (tautan dan sumber di bawah) secara dinamis menghasilkan hexmap dengan PHP dan menggunakan Javascript untuk menangani klik peta. Mengklik pada hex menyoroti hex.
Peta dibuat secara acak, tetapi Anda harus dapat menggunakan kode Anda sendiri untuk mengisi peta. Ini diwakili oleh array 2d sederhana, dengan masing-masing elemen array memegang jenis terrain yang ada di hex tersebut.
Klik saya untuk mencoba Contoh Peta Hex
Untuk menggunakan, klik hex apa saja untuk menyorotnya.
Saat ini sedang menghasilkan peta 10x10, tetapi Anda dapat mengubah ukuran peta di PHP menjadi ukuran apa pun yang Anda inginkan. Saya juga menggunakan satu set ubin dari game Wesnoth sebagai contoh. Ketinggiannya 72x72 piksel, tetapi sumbernya juga memungkinkan Anda mengatur ukuran ubin hex Anda.
Heks diwakili oleh gambar PNG dengan area "di luar heks" ditetapkan sebagai transparan. Untuk memposisikan setiap hex, saya menggunakan CSS untuk mengatur posisi absolut setiap ubin, dihitung oleh koordinat hex grid. Peta terlampir dalam DIV tunggal, yang seharusnya memudahkan Anda untuk memodifikasi contoh.
Ini adalah kode halaman penuh. Anda juga dapat mengunduh sumber demo (termasuk semua gambar hex).
<?php
// ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
// :: HEX.PHP
// ::
// :: Author:
// :: Tim Holt, tim.m.holt@gmail.com
// :: Description:
// :: Generates a random hex map from a set of terrain types, then
// :: outputs HTML to display the map. Also outputs Javascript
// :: to handle mouse clicks on the map. When a mouse click is
// :: detected, the hex cell clicked is determined, and then the
// :: cell is highlighted.
// :: Usage Restrictions:
// :: Available for any use.
// :: Notes:
// :: Some content (where noted) copied and/or derived from other
// :: sources.
// :: Images used in this example are from the game Wesnoth.
// ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
// --- Turn up error reporting in PHP
error_reporting(E_ERROR | E_WARNING | E_PARSE | E_NOTICE);
// --- Define some constants
$MAP_WIDTH = 10;
$MAP_HEIGHT = 10;
$HEX_HEIGHT = 72;
// --- Use this to scale the hexes smaller or larger than the actual graphics
$HEX_SCALED_HEIGHT = $HEX_HEIGHT * 1.0;
$HEX_SIDE = $HEX_SCALED_HEIGHT / 2;
?>
<html>
<head>
<title>Hex Map Demo</title>
<!-- Stylesheet to define map boundary area and hex style -->
<style type="text/css">
body {
/*
margin: 0;
padding: 0;
*/
}
.hexmap {
width: <?php echo $MAP_WIDTH * $HEX_SIDE * 1.5 + $HEX_SIDE/2; ?>px;
height: <?php echo $MAP_HEIGHT * $HEX_SCALED_HEIGHT + $HEX_SIDE; ?>px;
position: relative;
background: #000;
}
.hex-key-element {
width: <?php echo $HEX_HEIGHT * 1.5; ?>px;
height: <?php echo $HEX_HEIGHT * 1.5; ?>px;
border: 1px solid #fff;
float: left;
text-align: center;
}
.hex {
position: absolute;
width: <?php echo $HEX_SCALED_HEIGHT ?>;
height: <?php echo $HEX_SCALED_HEIGHT ?>;
}
</style>
</head>
<body>
<script>
function handle_map_click(event) {
// ----------------------------------------------------------------------
// --- This function gets a mouse click on the map, converts the click to
// --- hex map coordinates, then moves the highlight image to be over the
// --- clicked on hex.
// ----------------------------------------------------------------------
// ----------------------------------------------------------------------
// --- Determine coordinate of map div as we want the click coordinate as
// --- we want the mouse click relative to this div.
// ----------------------------------------------------------------------
// ----------------------------------------------------------------------
// --- Code based on http://www.quirksmode.org/js/events_properties.html
// ----------------------------------------------------------------------
var posx = 0;
var posy = 0;
if (event.pageX || event.pageY) {
posx = event.pageX;
posy = event.pageY;
} else if (event.clientX || e.clientY) {
posx = event.clientX + document.body.scrollLeft
+ document.documentElement.scrollLeft;
posy = event.clientY + document.body.scrollTop
+ document.documentElement.scrollTop;
}
// --- Apply offset for the map div
var map = document.getElementById('hexmap');
posx = posx - map.offsetLeft;
posy = posy - map.offsetTop;
//console.log ("posx = " + posx + ", posy = " + posy);
// ----------------------------------------------------------------------
// --- Convert mouse click to hex grid coordinate
// --- Code is from http://www-cs-students.stanford.edu/~amitp/Articles/GridToHex.html
// ----------------------------------------------------------------------
var hex_height = <?php echo $HEX_SCALED_HEIGHT; ?>;
x = (posx - (hex_height/2)) / (hex_height * 0.75);
y = (posy - (hex_height/2)) / hex_height;
z = -0.5 * x - y;
y = -0.5 * x + y;
ix = Math.floor(x+0.5);
iy = Math.floor(y+0.5);
iz = Math.floor(z+0.5);
s = ix + iy + iz;
if (s) {
abs_dx = Math.abs(ix-x);
abs_dy = Math.abs(iy-y);
abs_dz = Math.abs(iz-z);
if (abs_dx >= abs_dy && abs_dx >= abs_dz) {
ix -= s;
} else if (abs_dy >= abs_dx && abs_dy >= abs_dz) {
iy -= s;
} else {
iz -= s;
}
}
// ----------------------------------------------------------------------
// --- map_x and map_y are the map coordinates of the click
// ----------------------------------------------------------------------
map_x = ix;
map_y = (iy - iz + (1 - ix %2 ) ) / 2 - 0.5;
// ----------------------------------------------------------------------
// --- Calculate coordinates of this hex. We will use this
// --- to place the highlight image.
// ----------------------------------------------------------------------
tx = map_x * <?php echo $HEX_SIDE ?> * 1.5;
ty = map_y * <?php echo $HEX_SCALED_HEIGHT ?> + (map_x % 2) * (<?php echo $HEX_SCALED_HEIGHT ?> / 2);
// ----------------------------------------------------------------------
// --- Get the highlight image by ID
// ----------------------------------------------------------------------
var highlight = document.getElementById('highlight');
// ----------------------------------------------------------------------
// --- Set position to be over the clicked on hex
// ----------------------------------------------------------------------
highlight.style.left = tx + 'px';
highlight.style.top = ty + 'px';
}
</script>
<?php
// ----------------------------------------------------------------------
// --- This is a list of possible terrain types and the
// --- image to use to render the hex.
// ----------------------------------------------------------------------
$terrain_images = array("grass" => "grass-r1.png",
"dirt" => "dirt.png",
"water" => "coast.png",
"path" => "stone-path.png",
"swamp" => "water-tile.png",
"desert" => "desert.png",
"oasis" => "desert-oasis-tile.png",
"forest" => "forested-mixed-summer-hills-tile.png",
"hills" => "hills-variation3.png",
"mountain" => "mountain-tile.png");
// ==================================================================
function generate_map_data() {
// -------------------------------------------------------------
// --- Fill the $map array with values identifying the terrain
// --- type in each hex. This example simply randomizes the
// --- contents of each hex. Your code could actually load the
// --- values from a file or from a database.
// -------------------------------------------------------------
global $MAP_WIDTH, $MAP_HEIGHT;
global $map, $terrain_images;
for ($x=0; $x<$MAP_WIDTH; $x++) {
for ($y=0; $y<$MAP_HEIGHT; $y++) {
// --- Randomly choose a terrain type from the terrain
// --- images array and assign to this coordinate.
$map[$x][$y] = array_rand($terrain_images);
}
}
}
// ==================================================================
function render_map_to_html() {
// -------------------------------------------------------------
// --- This function renders the map to HTML. It uses the $map
// --- array to determine what is in each hex, and the
// --- $terrain_images array to determine what type of image to
// --- draw in each cell.
// -------------------------------------------------------------
global $MAP_WIDTH, $MAP_HEIGHT;
global $HEX_HEIGHT, $HEX_SCALED_HEIGHT, $HEX_SIDE;
global $map, $terrain_images;
// -------------------------------------------------------------
// --- Draw each hex in the map
// -------------------------------------------------------------
for ($x=0; $x<$MAP_WIDTH; $x++) {
for ($y=0; $y<$MAP_HEIGHT; $y++) {
// --- Terrain type in this hex
$terrain = $map[$x][$y];
// --- Image to draw
$img = $terrain_images[$terrain];
// --- Coordinates to place hex on the screen
$tx = $x * $HEX_SIDE * 1.5;
$ty = $y * $HEX_SCALED_HEIGHT + ($x % 2) * $HEX_SCALED_HEIGHT / 2;
// --- Style values to position hex image in the right location
$style = sprintf("left:%dpx;top:%dpx", $tx, $ty);
// --- Output the image tag for this hex
print "<img src='$img' alt='$terrain' class='hex' style='zindex:99;$style'>\n";
}
}
}
// -----------------------------------------------------------------
// --- Generate the map data
// -----------------------------------------------------------------
generate_map_data();
?>
<h1>Hex Map Example</h1>
<a href='index.phps'>View page source</a><br/>
<a href='hexmap.zip'>Download source and all images</a>
<!-- Render the hex map inside of a div block -->
<div id='hexmap' class='hexmap' onclick='handle_map_click(event);'>
<?php render_map_to_html(); ?>
<img id='highlight' class='hex' src='hex-highlight.png' style='zindex:100;'>
</div>
<!--- output a list of all terrain types -->
<br/>
<?php
reset ($terrain_images);
while (list($type, $img) = each($terrain_images)) {
print "<div class='hex-key-element'><img src='$img' alt='$type'><br/>$type</div>";
}
?>
</body>
</html>
Berikut adalah screenshot dari contoh ...
Pasti bisa menggunakan beberapa perbaikan. Saya perhatikan dalam komentar sebelumnya Anda mengatakan Anda terbiasa dengan jQuery, yang bagus. Saya tidak menggunakannya di sini untuk membuat hal-hal sederhana, tetapi itu akan sangat berguna untuk digunakan.