31 lines
796 B
Go
31 lines
796 B
Go
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package sdl
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import "errors"
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// setPlaying associates a channel no. to the Track playing.
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func (e *Engine) setPlaying(channel int, t *Track) {
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e.channelMu.Lock()
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defer e.channelMu.Unlock()
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e.channelsPlaying[channel] = t
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}
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// unsetPlaying associates a channel no. to the Track playing.
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func (e *Engine) unsetPlaying(channel int) error {
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e.channelMu.Lock()
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defer e.channelMu.Unlock()
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if track, ok := e.channelsPlaying[channel]; ok {
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track.channel = -1
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delete(e.channelsPlaying, channel)
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return nil
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}
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return errors.New("didn't even know channel %d was playing a sound")
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}
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// isPlaying checks if a sound effect is playing on a channel.
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func (e *Engine) isPlaying(channel int) bool {
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e.channelMu.RLock()
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defer e.channelMu.RUnlock()
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_, ok := e.channelsPlaying[channel]
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return ok
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}
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