public override EffectLayer Render(IGameState gamestate)
{
_previousAnimationTime = _currentAnimationTime;
_currentAnimationTime = GetAnimationTime() % Properties.AnimationDuration;
EffectLayer gradient_layer = new EffectLayer();
if (Properties.AnimationRepeat > 0)
{
if (_playTimes >= Properties.AnimationRepeat)
{
return(gradient_layer);
}
if (_currentAnimationTime < _previousAnimationTime)
{
_playTimes++;
}
}
else
{
_playTimes = 0;
}
EffectLayer gradient_layer_temp = new EffectLayer();
using (Graphics g = gradient_layer_temp.GetGraphics())
{
Properties.AnimationMix.Draw(g, _currentAnimationTime);
}
Rectangle rect = new Rectangle(0, 0, Effects.canvas_width, Effects.canvas_height);
if (Properties.ScaleToKeySequenceBounds)
{
var region = Properties.Sequence.GetAffectedRegion();
rect = new Rectangle((int)region.X, (int)region.Y, (int)region.Width, (int)region.Height);
}
using (Graphics g = gradient_layer.GetGraphics())
{
g.DrawImage(gradient_layer_temp.GetBitmap(), rect, new Rectangle(0, 0, Effects.canvas_width, Effects.canvas_height), GraphicsUnit.Pixel);
}
gradient_layer_temp.Dispose();
if (Properties.ForceKeySequence)
{
gradient_layer.OnlyInclude(Properties.Sequence);
}
return(gradient_layer);
}
public override EffectLayer Render(IGameState gamestate)
{
EffectLayer animationLayer = new EffectLayer();
// Calculate elapsed time since last Render call
long dt = _animTimeStopwatch.ElapsedMilliseconds;
_animTimeStopwatch.Restart();
// Update all running animations. We have to call "ToList()" to prevent "Collection was modified; enumeration operation may not execute"
runningAnimations.ToList().ForEach(anim => {
anim.currentTime += dt / 1000f;
if (Properties.AnimationRepeat > 0)
{
anim.playTimes += (int)(anim.currentTime / Properties.AnimationDuration);
}
anim.currentTime %= Properties.AnimationDuration;
});
// Remove any animations that have completed their play times
if (Properties.AnimationRepeat > 0)
{
runningAnimations.RemoveAll(ra => ra.playTimes >= Properties.AnimationRepeat);
}
// Check to see if the gamestate will cause any animations to trigger
CheckTriggers(gamestate);
// Render each playing animation. We have to call "ToList()" to prevent "Collection was modified; enumeration operation may not execute"
runningAnimations.ToList().ForEach(anim => {
EffectLayer temp = new EffectLayer();
// Default values for the destination rect (the area that the canvas is drawn to) and animation offset
Rectangle destRect = new Rectangle(0, 0, Effects.canvas_width, Effects.canvas_height);
PointF offset = Properties.KeyTriggerTranslate ? anim.offset : PointF.Empty;
// When ScaleToKeySequenceBounds is true, additional calculations are needed on the destRect and offset:
if (Properties.ScaleToKeySequenceBounds)
{
// The dest rect should simply be the bounding region of the affected keys
RectangleF affectedRegion = Properties.Sequence.GetAffectedRegion();
destRect = Rectangle.Truncate(affectedRegion);
// If we are scaling to key sequence bounds, we need to adapt the offset of the pressed key so that it
// remains where it is after the bound - scaling operation.
// Let's consider only 1 dimension (X) for now since it makes it easier to think about. The scaling process
// is: the whole canvas width is scaled down to the width of the affected region, and then it offset by the
// X of the affected region. To have a point that remains the same, we need to reposition it when it's being
// used on the canvas, therefore this process needs to be inverted: 1.take the original offset of X and
// subtract the affected region's X, thereby giving us the distance from the edge of the affected region to
// the offset; 2. scale this up to counter-act the down-scaling done, so we calculate the change in scale off
// the canvas by dividing canvas width by the affected region's width; 3.multiply these two numbers together
// and that's our new X offset.
// This probably makes no sense and I'll forget how it works immediately, but hopefully it helps a little in
// future if this code ever needs to be revised. It's embarassing how long it took to work this equation out.
offset.X = (offset.X - affectedRegion.X) * (Effects.canvas_width / affectedRegion.Width);
offset.Y = (offset.Y - affectedRegion.Y) * (Effects.canvas_height / affectedRegion.Height);
}
// Draw the animation to a temporary canvas
using (Graphics g = temp.GetGraphics())
Properties.AnimationMix.Draw(g, anim.currentTime, 1f, offset);
// Draw from this temp canvas to the actual layer, performing the scale down if it's needed.
using (Graphics g = animationLayer.GetGraphics())
g.DrawImage(temp.GetBitmap(), destRect, new Rectangle(0, 0, Effects.canvas_width, Effects.canvas_height), GraphicsUnit.Pixel);
temp.Dispose();
});
if (Properties.ForceKeySequence)
{
animationLayer.OnlyInclude(Properties.Sequence);
}
return(animationLayer);
}