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  • Committer: Tim Marston
  • Date: 2012-03-10 13:04:29 UTC
  • Revision ID: tim@ed.am-20120310130429-310w5ejo968mc6mo
cleaned-up notes

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src/text.cc
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// mode-specific message parameters
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static signed long _message_params[ NUM_MESSAGE_BUFFERS ];
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// text scaling factors
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static int _message_scale[ NUM_MESSAGE_BUFFERS ];
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// time last frame
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static unsigned long _last_millis;
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// recalculate message params, based on _duration
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static bool _do_draw_reset;
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// recalculate messages parameters (after message reset)
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static unsigned char _message_recalc_flags;
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void reset_message_param( int message_num )
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{
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                        _message_params[ message_num ] = NUM_SEGMENTS; break;
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                }
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                _message_params[ message_num ] = -( _message_params[ message_num ] -
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                        TextRenderer::get_width( _message_lens[ message_num ],
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                                        _message_scale[ message_num ] ) ) / 2;
 
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                        TextRenderer::get_width( _message_lens[ message_num ] ) ) / 2;
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        }
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}
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}
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void Text::reset_message( int message_num, char mode, int scale )
 
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void Text::reset_message( int message_num, char mode )
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{
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        _message_modes[ message_num ] = mode;
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        _message_recalc_flags |= 1 << message_num;
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        _message_scale[ message_num ] = scale;
 
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        reset_message_param( message_num );
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}
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        _duration = 0;
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        _last_millis = ::millis();
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        _do_draw_reset = false;
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        _message_recalc_flags = 0;
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        // reset the text renderer's output buffer
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        TextRenderer::reset_buffer();
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void Text::draw( int message_num, int segment )
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{
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        TextRenderer::buffer_in_use();
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        // perform a mid-frame reset, as necessary
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        if( _do_draw_reset && segment > NUM_SEGMENTS / 2 ) {
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                _do_draw_reset = false;
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                // reset message param?
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                if( _message_recalc_flags & ( 1 << message_num ) ) {
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                        _message_recalc_flags &= ~( 1 << message_num );
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                        reset_message_param( message_num );
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                }
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                // add to horizontal scroll position
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                if( _message_modes[ message_num ] & MODE_HSCROLL ) {
 
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                if( _message_modes[ message_num ] & MODE_HSCROLL )
 
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                {
 
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                        // add to horizontal scroll position
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                        _message_params[ message_num ] +=
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                                _duration * TEXT_SCROLL_SPEED / 1000;
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                        long excess = _message_params[ message_num ] -
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                                TextRenderer::get_width( _message_lens[ message_num ],
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                                                _message_scale[ message_num ] );
 
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                                TextRenderer::get_width( _message_lens[ message_num ] );
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                        if( excess >= 0 ) {
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                                reset_message_param( message_num );
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                                _message_params[ message_num ] += excess;
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        TextRenderer::render(
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                _messages[ message_num ], _message_lens[ message_num ],
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                (long)segment + _message_params[ message_num ],
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                ( _message_modes[ message_num ] & 1 ) == 0, 0,
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                _message_scale[ message_num ] );
 
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                ( _message_modes[ message_num ] & 1 ) == 0, 0 );
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}