Allow TickcountSegments to have a value of 0.

This allows for more accuracy with simfiles.

Docs/Changelog_sm-ssc.txt

@@ -13,6 +13,11 @@ _____________________________________________________________________________
 sm-ssc v1.2.3 | 2011022?
 --------------------------------------------------------------------------------
 
+20110301
+--------
+* Allow Tickcount Segments to have a value of 0 to better replicate some
+  charts in the Pump series. [Wolfman2000]
+
 20110228
 --------
 * Add Fakes to the RadarCategories. [Wolfman2000]

src/Player.cpp

@@ -2782,7 +2782,9 @@ void Player::CrossedRows( int iLastRowCrossed, const RageTimer &now )
 		int iCheckpointFrequencyRows = ROWS_PER_BEAT/2;
 		if( CHECKPOINTS_USE_TICKCOUNTS )
 		{
-			iCheckpointFrequencyRows = ROWS_PER_BEAT / GAMESTATE->m_pCurSong->m_Timing.GetTickcountAtRow( iLastRowCrossed );
+			int tickCurrent = GAMESTATE->m_pCurSong->m_Timing.GetTickcountAtRow( iLastRowCrossed );
+			// There are some charts that don't want tickcounts involved at all.
+			iCheckpointFrequencyRows = (tickCurrent > 0 ? ROWS_PER_BEAT / tickCurrent : 0);
 		}
 		else if( CHECKPOINTS_USE_TIME_SIGNATURES )
 		{
@@ -2792,6 +2794,8 @@ void Player::CrossedRows( int iLastRowCrossed, const RageTimer &now )
 			iCheckpointFrequencyRows = ROWS_PER_BEAT * tSignature.m_iDenominator / (tSignature.m_iNumerator * 4);
 		}
 
+		if( iCheckpointFrequencyRows > 0 )
+		{
 			// "the first row after the start of the range that lands on a beat"
 			int iFirstCheckpointInRange = ((m_iFirstUncrossedRow+iCheckpointFrequencyRows-1)/iCheckpointFrequencyRows) * iCheckpointFrequencyRows;
 
@@ -2848,6 +2852,7 @@ void Player::CrossedRows( int iLastRowCrossed, const RageTimer &now )
 				}
 			}
 		}
+	}
 
 	m_iFirstUncrossedRow = iLastRowCrossed+1;
 }

src/ScreenEdit.cpp

@@ -2644,7 +2644,7 @@ void ScreenEdit::HandleScreenMessage( const ScreenMessage SM )
 	else if ( SM == SM_BackFromTickcountChange )
 	{
 		int iTick = atoi( ScreenTextEntry::s_sLastAnswer );
-		if ( iTick >= 1 && iTick <= ROWS_PER_BEAT )
+		if ( iTick >= 0 && iTick <= ROWS_PER_BEAT )
 		{
 			m_pSong->m_Timing.SetTickcountAtBeat( GAMESTATE->m_fSongBeat, iTick );
 		}

src/TimingData.h

@@ -421,7 +421,7 @@ struct TickcountSegment
 	 * @param s the starting row of this segment.
 	 * @param t the amount of ticks counted per beat.
 	 */
-	TickcountSegment( int s, int t ){ m_iStartRow = max( 0, s ); m_iTicks = max( 1, t ); }
+	TickcountSegment( int s, int t ){ m_iStartRow = max( 0, s ); m_iTicks = max( 0, t ); }
 	/**
 	 * @brief The row in which the TickcountSegment activates.
 	 */