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QtGameMaker/help/files/405_02_backgrounds.html
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>Backgrounds</title>
<link href="style.css" rel="stylesheet" type="text/css">
</head>
<body background="images/back.gif">
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<h3>Backgrounds</h3>
Each room can have up to 8 backgrounds. Also it has a background color. All aspects of
these backgrounds you can change in a piece of code using the following variables (note
that some are arrays that range from 0 to 7, indicating the different backgrounds):
<p>
<blockquote>
<tt><b>background_color</b></tt>
Background color for the room.<br>
<tt><b>background_showcolor</b></tt>
Whether to clear the window in the background color.<br>
<tt><b>background_visible[0..7]</b></tt>
Whether the particular background image is visible.<br>
<tt><b>background_foreground[0..7]</b></tt>
Whether the background is actually a foreground.<br>
<tt><b>background_index[0..7]</b></tt>
Background image index for the background.<br>
<tt><b>background_x[0..7]</b></tt>
X position of the background image.<br>
<tt><b>background_y[0...7]</b></tt>
Y position of the background image.<br>
<tt><b>background_width[0...7]*</b></tt>
Width of the background image.<br>
<tt><b>background_height[0...7]*</b></tt>
Height of the background image.<br>
<tt><b>background_htiled[0..7]</b></tt>
Whether horizontally tiled.<br>
<tt><b>background_vtiled[0..7]</b></tt>
Whether vertically tiled.<br>
<tt><b>background_xscale[0..7]</b></tt>
Horizontal scaling factor for the background. (This must be positive; you cannot
use a negative value to mirror the background.)<br>
<tt><b>background_yscale[0..7]</b></tt>
Vertical scaling factor for the background. (This must be positive; you cannot
use a negative value to flip the background.)<br>
<tt><b>background_hspeed[0..7]</b></tt>
Horizontal scrolling speed of the background
(pixels per step).<br>
<tt><b>background_vspeed[0..7]</b></tt>
Vertical scrolling speed of the background
(pixels per step).<br>
<tt><b>background_blend[0..7]</b></tt>
Blending color to use when drawing the background.
A value of c_white is the default.
<b><i>Only available in the Pro Edition!</i></b><br>
<tt><b>background_alpha[0..7]</b></tt>
Transparency (alpha) value to use when drawing
the background. A value of 1 is the normal setting; a value of 0 is completely
transparent.<br>
</blockquote>
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</body>
</html>
<!-- KEYWORDS
background settings
background speed
background_color
background_showcolor
background_visible
background_foreground
background_index
background_x
background_y
background_width
background_height
background_htiled
background_vtiled
background_xscale
background_yscale
background_hspeed
background_vspeed
background_blend
background_alpha
-->