using Newtonsoft.Json.Linq;
using UnityEditor;
#if UNITY_VFX_GRAPH
using UnityEngine.VFX;
#endif
namespace MCPForUnity.Editor.Tools.Vfx
{
/// <summary>
/// Playback control operations for VFX Graph (VisualEffect component).
/// Requires com.unity.visualeffectgraph package and UNITY_VFX_GRAPH symbol.
/// </summary>
internal static class VfxGraphControl
{
#if !UNITY_VFX_GRAPH
public static object Control(JObject @params, string action)
{
return new { success = false, message = "VFX Graph package (com.unity.visualeffectgraph) not installed" };
}
public static object SetPlaybackSpeed(JObject @params)
{
return new { success = false, message = "VFX Graph package (com.unity.visualeffectgraph) not installed" };
}
public static object SetSeed(JObject @params)
{
return new { success = false, message = "VFX Graph package (com.unity.visualeffectgraph) not installed" };
}
#else
public static object Control(JObject @params, string action)
{
VisualEffect vfx = VfxGraphCommon.FindVisualEffect(@params);
if (vfx == null)
{
return new { success = false, message = "VisualEffect not found" };
}
switch (action)
{
case "play": vfx.Play(); break;
case "stop": vfx.Stop(); break;
case "pause": vfx.pause = !vfx.pause; break;
case "reinit": vfx.Reinit(); break;
default:
return new { success = false, message = $"Unknown VFX action: {action}" };
}
return new { success = true, message = $"VFX {action}", isPaused = vfx.pause };
}
public static object SetPlaybackSpeed(JObject @params)
{
VisualEffect vfx = VfxGraphCommon.FindVisualEffect(@params);
if (vfx == null)
{
return new { success = false, message = "VisualEffect not found" };
}
float rate = @params["playRate"]?.ToObject<float>() ?? 1f;
Undo.RecordObject(vfx, "Set VFX Play Rate");
vfx.playRate = rate;
EditorUtility.SetDirty(vfx);
return new { success = true, message = $"Set play rate = {rate}" };
}
public static object SetSeed(JObject @params)
{
VisualEffect vfx = VfxGraphCommon.FindVisualEffect(@params);
if (vfx == null)
{
return new { success = false, message = "VisualEffect not found" };
}
uint seed = @params["seed"]?.ToObject<uint>() ?? 0;
bool resetOnPlay = @params["resetSeedOnPlay"]?.ToObject<bool>() ?? true;
Undo.RecordObject(vfx, "Set VFX Seed");
vfx.startSeed = seed;
vfx.resetSeedOnPlay = resetOnPlay;
EditorUtility.SetDirty(vfx);
return new { success = true, message = $"Set seed = {seed}" };
}
#endif
}
}
