forked from Mirrors/openclonk
54 lines
1.3 KiB
C
54 lines
1.3 KiB
C
global func FadeOut(int time, bool del)
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{
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//if there is an existing effect, remove it
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if(GetEffect("ObjFade", this)) RemoveEffect("ObjFade", this);
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//add the effect itself
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var effect = AddEffect("ObjFade", this, 1,1);
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effect.fadeTime = time;
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effect.delete = del; //delete the object when fade-out is done
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effect.FadeOut = true;
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return effect;
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}
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global func FadeIn(int time)
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{
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//if there is an existing effect, remove it
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if(GetEffect("ObjFade", this)) RemoveEffect("ObjFade", this);
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//add the effect itself
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var effect = AddEffect("ObjFade", this, 1,1);
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effect.fadeTime = time;
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return effect;
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}
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global func FxObjFadeTimer(object target, proplist effect, int timer)
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{
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//Is the fade timer up?
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if(timer >= effect.fadeTime){
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//delete object at end if specified
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if(effect.delete) target->RemoveObject();
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else{
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if(effect.FadeOut){
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//Callback to object when alpha is completely transparent
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target->~OnFadeDisappear();
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target->SetObjAlpha(0);
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}
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else{
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//Callback to object when alpha is fully opaque
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target->~OnFadeAppear();
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target->SetObjAlpha(255);
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}
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}
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return -1;
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}
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//find out what the alpha should be
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var alpha = (timer * 1000 / effect.fadeTime) * 255 / 1000;
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//Does the object fade out or in?
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if(effect.FadeOut) alpha = 255 - alpha;
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//shade object's alpha to match time
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target->SetObjAlpha(alpha);
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} |