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Layer
selection
This drop-box shows you the current layer and
allows you to change it. The rest of the dialog
shows you the properties for the layer that is
selected here. If you select a different layer in
this drop-box, the rest of the items in this
dialog will change to the corresponding
properties of that new layer.
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Speeds
Each layer has a speed, expressed as a rational
number which is the layer's speed relative to
layer 4 (the sprite layer). Layers that have a
speed value higher than 1.0 move faster than the
sprite layer, creating the illusion that they are
closer to the viewpont. Layers that have a speed
value lower than 1.0 move slower than the sprite
layer, making them look farther away. This way of
scrolling is called parallax scrolling.
In Jazz2 you can have up to 8 different layers.
The auto-speed for a layer is added to the
position of the layer for each game-tick. If the
auto-speed values are 0, the layer doesn't move
by itself. An auto-speed value that is greater
than 0 will make the layer move in a positive
direction, a value less than 0 moves the layer in
the opposite direction.
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Dimensions
This part of the layer properties dialog holds
the dimensions of the layer. The Width
and Height values are the layer's
dimensions in tiles. The maximum dimensions of a
layer is 1023 by 1023 tiles (that is more than
one billion pixels).
The tile width and tile height
flags make the specified layer repeat into the
horizontal- or vertical direction endlessly. This
effect is called tiling. These flags are often
used to create infinite scrolling backgrounds.
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Background
Effects
The background effects settings select an effect
to be used for the background layer. There is
currently only one background effect which should
only be used on the background layer (layer 8).
If the Texture mode check is not
selected, the background effect is disabled. When
the background effect is enabled, the layer's
size is automatically set to 8x8; this is a
requirement for textured layers.
The parameters for the Warp Horizon
background effect are Red, Green and Blue values
to which the sky will fade when the layer goes on
to infinity.
The background effect is not visible in the
parallax view.
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Star Wars
If you enable this check mark, the background of
the level will show a number of
sub-pixel-accurate parallaxing stars. You should
only use this effect in combination with a
textured background.
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OK button
Press this
button to apply the changes you made in the layer
properties dialog.
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Cancel button
Press this button to discard the changes you made
in the layer properties dialog.
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Help button
Press this button to display the help you
are reading now.
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