64 lines
2.7 KiB
HTML
64 lines
2.7 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html><head>
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<title>More about backgrounds</title>
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<link href="style.css" rel="stylesheet" type="text/css">
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</head>
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<body background="images/back.gif">
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<!--START-->
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<h1>More about backgrounds</h1>
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In advanced more there are a number of additional options for background.
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First of all, a new button <b>Save Background</b> has appeared. With this
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button you can save the background in a proprietary format. This will not only
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store the image itself but also for example information about the tiles (see below).
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These files will have the extension .gmbck. You can load them in <i>Game Maker</i>
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and while running a game.
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Also you can also change a background or create your own backgrounds by pressing the
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button labeled <b>Edit Background</b>. A built-in image editor opens that has many
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features. Please realize that this is not a full-blown program and if you require
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more advanced editing tools you might want to use a separate drawing program.
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For more information on how to use the image editor see the section on
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<a href="202_03_individual.html">Editing images</a>.
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<p>
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Sometimes you want to use a background as a set of tiles, that is, a collection
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of smaller images in one big image. When create the rooms you can then add these
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subimages at different places in the room. This is very useful for creating
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nice looking levels. To use a background as a tile set, check the box labelled
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<b>Use as tile set</b>. The form now changes to look as follows:
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<p>
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<img src="images/form_background_advanced.jpg">
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<p>
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You can indicate a number of settings for the tile set. In particular you can
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indicate the width and height of each tile. (Only one size can be given, so
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better make sure that all tiles in the set have the same size. If you have
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different sizes, create two or more tile sets.) You can also indicate an
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offset where the top leftmost tile starts. Finally, a
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separation between the tiles (this is normally 0 or 1) can be indicated.
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For more information on using tiles, see the section on
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<a href="210_02_tiles.html">Adding Tiles</a> when creating rooms.
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<p>
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A word of warning is required here. When you put separating borders between the
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sprites and use interpolation between pixels (see the global game settings) this
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can result in cracks between the tiles. Better make sure the pixels around the
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tiles actually match with the pixels just inside the tiles to avoid this. You can
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easily achieve this by editing the background and changing the color of such pixels.
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<!--END-->
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</body>
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</html>
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<!-- KEYWORDS
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creating backgrounds
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saving backgrounds
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painting backgrounds
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tile sets
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--> |