81 lines
3.4 KiB
C#
81 lines
3.4 KiB
C#
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using UnityEngine.Playables;
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namespace UnityEngine.Rendering.HighDefinition
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{
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/// <summary>
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/// Water surface behavior for timeline support.
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/// </summary>
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public class WaterSurfaceBehaviour : PlayableBehaviour
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{
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// This needs to be kept because we it to restore the simulation as active when timeline is disabled
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WaterSurface m_Target = null;
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/// <summary>
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/// Function called to process a frame.
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/// </summary>
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/// <param name="playable">Playable.</param>
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/// <param name="info">FrameData.</param>
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/// <param name="playerData">Target water surface.</param>
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public override void ProcessFrame(Playable playable, FrameData info, object playerData)
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{
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// Grab the target water surface (if it has been set and the simulation has been initialized)
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WaterSurface waterSurface = playerData as WaterSurface;
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if (waterSurface != null && waterSurface.simulation != null)
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{
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// Keep track of the water surface
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m_Target = waterSurface;
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// Disable the time steps (when in timeline), right now it is done in lazy fashion
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m_Target.simulation.DisableTimeSteps();
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// Grab the total timeline time
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var duration = playable.GetOutput(0).GetDuration();
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var currentTime = playable.GetTime();
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var numberOfFullLoops = (int)(currentTime / duration);
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currentTime -= numberOfFullLoops * duration;
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// Let's go through the Playables and add the relevant ones (partially)
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double currentTotalTime = 0.0;
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int inputCount = playable.GetInputCount();
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for (int i = 0; i < inputCount; i++)
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{
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// Grab the input playable (make sure he is of the right type)
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Playable inputPlayable = playable.GetInput(i);
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if (inputPlayable.GetPlayableType() != typeof(WaterSurfacePlayableBehaviour))
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continue;
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// Let's grab the playable behavior
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var waterPlayable = (ScriptPlayable<WaterSurfacePlayableBehaviour>)inputPlayable;
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WaterSurfacePlayableBehaviour wsPB = waterPlayable.GetBehaviour();
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// The clip is completely before the current time
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if (wsPB.clipEnd <= currentTime)
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{
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currentTotalTime += (wsPB.clipEnd - wsPB.clipStart);
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}
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// The clip is partially before the current time
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else if (wsPB.clipStart < currentTime)
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{
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currentTotalTime += (currentTime - wsPB.clipStart);
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}
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}
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// Set the simulation time
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waterSurface.simulation.deltaTime = 1.0f / 60.0f;
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waterSurface.simulation.simulationTime = (float)(currentTotalTime) * waterSurface.timeMultiplier;
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}
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}
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/// <summary>
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/// Function called when the playable is destroyed.
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/// </summary>
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/// <param name="playable">Playable.</param>
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public override void OnPlayableDestroy(Playable playable)
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{
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if (m_Target != null && m_Target.simulation != null)
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{
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m_Target.simulation.EnableTimeSteps();
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}
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}
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}
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}
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