264 lines
7.1 KiB
HTML
264 lines
7.1 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<title>LtgLoader & TileMasker Demonstration</title>
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<style type="text/css">
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#bitmaps img {
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border: 1px dotted black;
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margin: 0.5em;
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}
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canvas {
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float: left;
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}
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dl {
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float: left;
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width: 30em;
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margin-bottom: 4em;
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}
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dt {
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font-weight: bold;
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text-align: right;
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padding-right: 1em;
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width: 7em;
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height: 1.5em;
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float: left;
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}
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dd { height: 1.5em; }
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</style>
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</head>
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<body>
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<h1>LtgLoader & TileMasker Demonstration</h1>
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<noscript>Please enable JavaScript.</noscript>
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<div id="bitmaps">
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<img id="bmp_game" />
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<img id="bmp_mas" />
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</div>
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<input type="file" id="ltg" />
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<input type="file" id="lvl" />
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<select id="lvl_id"></select>
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<br clear="both" />
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<dl>
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<dt>Name</dt>
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<dd id="ltg_name">(No LTG Loaded)</dd>
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<dt>Author</dt>
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<dd id="ltg_author"> </dd>
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<dt>Description</dt>
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<dd id="ltg_desc"> </dd>
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<dt>Id</dt>
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<dd id="ltg_id"> </dd>
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</dl>
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<dl>
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<dt>Name</dt>
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<dd id="lvl_name">(No LVL loaded)</dd>
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<dt>Author</dt>
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<dd id="lvl_author"></dd>
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<dt>Difficulty</dt>
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<dd id="lvl_diff"></dd>
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<dt>Hint</dt>
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<dd id="lvl_hint"></dd>
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</dl>
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<br clear="both" />
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<canvas id="canvas" width="250" height="400">
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Your browser does not support the canvas element.
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</canvas>
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<canvas id="canvas_level" width="512" height="512"></canvas>
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<script src="../lasertank.js"></script>
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<script>
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var ctx = document.getElementById( 'canvas' ).getContext( '2d' ),
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ctxlevel = document.getElementById( 'canvas_level' ).getContext( '2d' ),
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ltg = document.getElementById( 'ltg' ),
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lvl = document.getElementById( 'lvl' ),
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render = null,
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// animation timer
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ianim,
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tile_set;
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ctx.font = '7pt Arial';
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ltg.addEventListener( 'change', ltgChange, false );
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lvl.addEventListener( 'change', lvlChange, false );
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function ltgChange( event )
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{
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if ( ltg.files.length === 0 ) return;
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clearInterval( ianim );
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var file = ltg.files[ 0 ],
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reader = new FileReader();
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reader.onload = function( event )
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{
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var loader = lasertank.LtgLoader(),
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meta = loader.fromString( event.target.result ),
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masker = lasertank.TileMasker(
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lasertank.ClassicTileDfn(),
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document
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),
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bmp_game = document.getElementById( 'bmp_game' ),
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bmp_mask = document.getElementById( 'bmp_mas' );
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bmp_game.src = meta.tiles;
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bmp_mask.src = meta.mask;
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// display metadata
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for ( var name in meta )
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{
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if ( ( name === 'tiles' ) || ( name === 'mask' ) )
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{
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continue;
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}
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document.getElementById( 'ltg_' + name ).innerHTML = meta[ name ];
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}
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masker.getMaskedTiles( meta.tiles, meta.mask, function( tiles )
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{
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// clear canvas to erase any previous LTG contents
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ctx.clearRect( 0, 0, ctx.canvas.width, ctx.canvas.height );
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var i = 0,
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anim = [];
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tile_set = tiles;
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for ( var tile in tiles )
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{
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var x = ( ( i % 5 ) * 50 ),
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y = ( Math.floor( i / 5 ) * 50 ),
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cur = tiles[ tile ];
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ctx.putImageData( cur.data, x, y );
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ctx.fillText( tile, x, ( y + 43 ), 50 );
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// is this tile animated?
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if ( cur !== cur.next )
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{
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// add to animation list
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anim.push( [ cur.next, x, y ] );
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}
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i++;
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}
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// animate tiles with multiple frames
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ianim = setInterval( function()
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{
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var i = anim.length;
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while ( i-- )
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{
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var data = anim[ i ],
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img = data[ 0 ].data,
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x = data[ 1 ],
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y = data[ 2 ];
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// clear tile area (in case masks differ) and render the
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// next frame
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ctx.clearRect( x, y, img.width, img.height );
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ctx.putImageData( img, x, y );
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// advance the frame
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anim[ i ][ 0 ] = data[ 0 ].next;
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}
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}, 200 );
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// trigger level change (in case of page refresh or tile set change
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// after level is already loaded)
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lvlChange();
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} );
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reader.onerror = function( e )
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{
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alert(
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'Error reading file: ' + e.message + '\n\n' +
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'Are you viewing this page locally? Try using a webserver.'
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);
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};
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};
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reader.readAsBinaryString( file );
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}
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function lvlChange()
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{
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if ( lvl.files.length === 0 ) return;
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var file = lvl.files[ 0 ],
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reader = new FileReader();
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reader.onload = function( event )
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{
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var level_set = lasertank.level.LevelSet(
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event.target.result,
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lasertank.level.ClassicLevel
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);
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// clean up any previous render and create a new one to render the
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// chosen level with our chosen tile set
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render && render.freeCanvas();
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render = lasertank.level.LevelRender( ctxlevel, tile_set );
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var lvlsel = document.getElementById( 'lvl_id' ),
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count = level_set.getLevelCount();
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lvlsel.innerHTML = '';
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for ( var i = 1; i <= count; i++ )
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{
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var option = document.createElement( 'option' );
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option.value = i;
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option.innerHTML = i;
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lvlsel.appendChild( option );
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}
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lvlsel.onchange = lvlchange;
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function lvlchange()
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{
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var level = level_set.getLevelByNumber( lvlsel.selectedIndex + 1 );
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render.render(
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level,
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lasertank.level.LevelState(
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level,
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lasertank.ClassicGameObjectFactory()
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)
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);
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document.getElementById( 'lvl_name' ).innerHTML =
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level.getLevelName();
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document.getElementById( 'lvl_author' ).innerHTML =
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level.getLevelAuthor();
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document.getElementById( 'lvl_diff' ).innerHTML =
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level.getLevelDifficulty();
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document.getElementById( 'lvl_hint' ).innerHTML =
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level.getLevelHint();
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};
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lvlchange();
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};
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reader.readAsBinaryString( file );
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}
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// invoke immediately, as we may have a filename prefilled from a refresh
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ltgChange();
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</script>
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</body>
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</html>
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