public ScriptedLayer(int width, int height, List<Pair<int, Layer>> script)
{
this.buffer = new Frame(width, height);
this.script = script;
this.script_index = 0;
this.frame_start_time = -1;
this.force_direction = Direction.None;
this.on_complete = null;
this.is_new_script_item = true;
this.last_layer = null;
}
public override Frame next_frame()
{
Layer layer;
if (this.frame_start_time == -1)
this.frame_start_time = Time.GetTime();
Pair<int, Layer> script_item = this.script[(int)this.script_index];
double time_on_frame = Time.GetTime() - this.frame_start_time;
// If we are being forced to the next frame, or if the current script item has expired
if (this.force_direction != Direction.None || time_on_frame > script_item.First)
{
this.last_layer = script_item.Second;
// Update the script index
if (this.force_direction == Direction.Backward)
if (this.script_index == 0)
this.script_index = (int)this.script.Count - 1;
else
this.script_index--;
else
if (this.script_index == this.script.Count)
this.script_index = 0;
else
this.script_index++;
// Only force one item
this.force_direction = Direction.None;
// If we are at the end of the script, reset to the beginning
if (this.script_index == this.script.Count)
{
this.script_index = 0;
if (this.on_complete != null)
this.on_complete.DynamicInvoke();
}
// Assign the new script item
script_item = this.script[(int)script_index];
this.frame_start_time = Time.GetTime();
layer = script_item.Second;
if (layer != null)
layer.reset();
this.is_new_script_item = true;
}
// Composite the current script item's layer
layer = script_item.Second;
// Do layer transitions here
this.is_new_script_item = false;
if (layer != null)
{
//this.buffer.clear();
Array.Clear(this.buffer.frame.buffer, 0, this.buffer.frame.buffer.Length);
// If the layer is opaque we can composite the last layer onto our buffer first.
// This will allow us to do transitions between script frames
//if (this.last_layer != null && this.opaque)
// this.last_layer.composite_next(this.buffer);
layer.composite_next(this.buffer);
return this.buffer;
}
else
{
// if this script item has null set for its layer, return null (transparent)
return null;
}
}
