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/**
Fade.c
Function to fade in and out objects.
@author
*/
global func FadeOut(int time, bool del)
{
// If there is an existing effect, remove it.
if (GetEffect("ObjFade", this))
RemoveEffect("ObjFade", this);
// Add the effect itself.
var effect = AddEffect("ObjFade", this, 1, 1);
effect.fade_time = time;
effect.fade_out = true;
// Delete the object when fade-out is done.
effect.delete = del;
return effect;
}
global func FadeIn(int time)
{
// If there is an existing effect, remove it.
if (GetEffect("ObjFade", this))
RemoveEffect("ObjFade", this);
// Add the effect itself.
var effect = AddEffect("ObjFade", this, 1, 1);
effect.fade_time = time;
return effect;
}
global func FxObjFadeTimer(object target, proplist effect, int timer)
{
// Is the fade timer up?
if (timer >= effect.fade_time)
{
// Delete object at end if specified.
if (effect.delete)
target->RemoveObject();
else
{
if (effect.fade_out)
{
// Callback to object when alpha is completely transparent.
target->~OnFadeDisappear();
target->SetObjAlpha(0);
}
else
{
// Callback to object when alpha is fully opaque.
target->~OnFadeAppear();
target->SetObjAlpha(255);
}
}
return FX_Execute_Kill;
}
// Find out what the alpha should be.
var alpha = (timer * 1000 / effect.fade_time) * 255 / 1000;
// Does the object fade out or in?
if (effect.fade_out)
alpha = 255 - alpha;
// Shade object's alpha to match time.
target->SetObjAlpha(alpha);
return FX_OK;
}
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