/*!
Now for an interesting function. This is our draw funcion which we
will call for every resource.
*/
void draw( RenderSystem& system )
{
/*!
Just like in the Hello World example, we'll draw some text.
This time we'll draw it with our position and color.
*/
system.drawText( "Resource" , position, color );
/*!
What if we'd like for these resources to go away? Well,
in order to get rid of a resource, we drop it. Here we
check if the user has pressed the spacebar, and if our
random function landed on 1. If so, we'll drop this
resource.
*/
if( EventReceiver::Instance()->getKeyPressed( PHK_SPACE ) && random(0,10) == 1 )
drop();
}
int main()
{
RenderSystem system;
/*!
We need a timer to keep track of the difference in time
between each frame. This just allows us to use the concept
of delta time, which is beyond the scope of this example.
*/
Timer timer;
timer.start();
while( system.run() )
{
/*!
We'll draw some text at various locations so that you know where you're at.
*/
system.drawText( "Top Left" , Vector2d( 0,0 ) );
system.drawText( "Center", Vector2d( 320,240 ), Color( 255,127,127 ) );
system.drawText( "Bottom Right", Vector2d( 640,480 ), Color( 255,0,0 ) );
system.drawText( "Top Right", Vector2d( 640,0 ), Color( 0,255,0 ) );
system.drawText( "Bottom Left", Vector2d( 0, 480 ), Color( 0,0,255 ) );
/*!
Now for view control. We'll use the time to compute how much we should move
the view when the player holds down the key. You could also rotate and scale
the view, but I'll leave that up to you!
*/
if( EventReceiver::Instance()->getKey( PHK_LEFT ) ){
system.getView().setPosition(
system.getView().getPosition()
+ ( Vector2d( -100.0f , 0.0f )
* (float)timer.getTime())
);
}
if( EventReceiver::Instance()->getKey( PHK_RIGHT ) ){
system.getView().setPosition(
system.getView().getPosition()
+ ( Vector2d( 100.0f , 0.0f )
* (float)timer.getTime() )
);
}
if( EventReceiver::Instance()->getKey( PHK_UP ) ){
system.getView().setPosition(
system.getView().getPosition() +
( Vector2d( 0.0f , -100.0f )
* (float)timer.getTime() )
);
}
if( EventReceiver::Instance()->getKey( PHK_DOWN ) ){
system.getView().setPosition(
system.getView().getPosition()
+ ( Vector2d( 0.0f , 100.0f )
* (float)timer.getTime() )
);
}
/*!
We reset the timer so we have an accurate measurement for the next frame.
*/
timer.reset();
}
return 0;
}
