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Reintroduced the extra clocking delay.

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This commit is contained in:
Thomas Harte 2017-02-18 20:18:50 -05:00
parent ed5ff49ef5
commit cd7876a746
2 changed files with 15 additions and 2 deletions
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14
Machines/Atari2600/TIA.cpp
View File

@ -649,6 +649,11 @@ void TIA::draw_player_visible(Player &player, CollisionType collision_identity,
next_event_time = next_motion_time;
}
if(player.pixel_delay && start + player.pixel_delay < next_event_time)
{
next_event_time = start + player.pixel_delay;
}
// is the next event a graphics trigger?
int next_copy = 160;
if(player.graphic[player.graphic_index])
@ -695,10 +700,17 @@ void TIA::draw_player_visible(Player &player, CollisionType collision_identity,
next_motion_time += 4;
}
// possibly it's a pixel delay
if(player.pixel_delay)
{
player.pixel_delay -= length;
if(!player.pixel_delay) player.pixel_position = 0;
}
// if it's a draw trigger, trigger a draw
if(position == (next_copy % 160))
{
player.pixel_position = 0;
player.pixel_delay = 1;
}
}
}

3
Machines/Atari2600/TIA.hpp
View File

@ -144,8 +144,9 @@ class TIA {
int graphic_index;
int pixel_position;
int pixel_delay;
Player() : size(0), copy_flags(0), graphic{0, 0}, reverse_mask(false), pixel_position(32), graphic_index(0) {}
Player() : size(0), copy_flags(0), graphic{0, 0}, reverse_mask(false), pixel_position(32), graphic_index(0), pixel_delay(0) {}
} player_[2];
// missile state