Game Development Reference
In-Depth Information
using
Microsoft.Xna.Framework;
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class
OnOffButton : SpriteGameObject
{
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public
OnOffButton(
string
imageAsset,
int
layer = 0,
string
id = "")
5
:
base
(imageAsset, layer, id, 0)
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{
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}
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public override void
HandleInput(InputHelper inputHelper)
{
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if
(inputHelper.MouseLeftButtonPressed() &&
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BoundingBox.Contains((
int
)inputHelper.MousePosition.X,
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(
int
)inputHelper.MousePosition.Y))
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−
sprite.SheetIndex = 1
sprite.SheetIndex;
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}
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public bool
On
{
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get
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{
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return
sprite.SheetIndex == 1;
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}
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set
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{
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if
(
value
)
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sprite.SheetIndex = 1;
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else
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sprite.SheetIndex = 0;
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}
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}
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}
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Listing 20.1
The class for representing an on/off button
the border width on the left and right side of the back sprite. Furthermore, we posi-
tion the slider slightly lower than the back sprite to account for the top border. The
complete constructor is then given as follows:
public
Slider(
string
sliderback,
string
sliderfront,
int
layer = 0,
string
id = "")
:
base
(layer, id)
{
leftmargin = 5;
rightmargin = 7;
back =
new
SpriteGameObject(sliderback, 0);
