Audio Fade In (Flowgraph Node)

Overview

• Node Name: Audio Fade In
• Icon: audiotrack
• Category: once_f_duration
• Tags: sound, audio, volume
• File: extensions/flowgraph/nodes/audio/fadeIn.lua

Fades the global audio volume up from silence.

Pin Schema

Input Pins

Output Pins

Standard once_f_duration pins (flow, started, finished).

Behavior

• workOnce() - Sets SFX global parameter g_FadeTimeMS to duration * 1000 and g_GameLoading to 0 (not loading = audio fades in). Sets duration state to started.
• work() - Tracks elapsed time via self.timer using self.mgr.dtReal. Sets duration state to finished when timer exceeds duration.
• reset() - Resets timer, duration state, and SFX parameters to defaults (g_FadeTimeMS = 0, g_GameLoading = 0).

Notes

• Uses SFXSystem.setGlobalParameter() for the actual audio fade - this is the engine-level global volume system.
• The difference from fadeOut is g_GameLoading = 0 (fade in) vs g_GameLoading = 1 (fade out).

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See Also

• Audio Channel Fade (Flowgraph Node) - Related reference
• Audio Fade Out (Flowgraph Node) - Related reference
• Play Sound (Flowgraph Node) - Related reference
• FlowGraph Guide - Guide