package funkin.ui.debug.charting.commands; import funkin.data.song.SongData.SongTimeChange; /** * A command which changes the starting BPM of the song. */ @:nullSafety @:access(funkin.ui.debug.charting.ChartEditorState) class ChangeStartingBPMCommand implements ChartEditorCommand { var targetBPM:Float; var previousBPM:Float = 100; public function new(targetBPM:Float) { this.targetBPM = targetBPM; } public function execute(state:ChartEditorState):Void { var timeChanges:Array = state.currentSongMetadata.timeChanges; if (timeChanges == null || timeChanges.length == 0) { previousBPM = 100; timeChanges = [new SongTimeChange(0, targetBPM)]; } else { previousBPM = timeChanges[0].bpm; timeChanges[0].bpm = targetBPM; } state.currentSongMetadata.timeChanges = timeChanges; Conductor.mapTimeChanges(state.currentSongMetadata.timeChanges); } public function undo(state:ChartEditorState):Void { var timeChanges:Array = state.currentSongMetadata.timeChanges; if (timeChanges == null || timeChanges.length == 0) { timeChanges = [new SongTimeChange(0, previousBPM)]; } else { timeChanges[0].bpm = previousBPM; } state.currentSongMetadata.timeChanges = timeChanges; Conductor.mapTimeChanges(state.currentSongMetadata.timeChanges); } public function toString():String { return 'Change Starting BPM to ${targetBPM}'; } }