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Merge pull request #317 from TomHarte/SpriteGlitching

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Corrects occasional TMS sprite glitching.
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Thomas Harte 2017-12-12 19:20:27 -08:00 committed by GitHub
commit 504772bcda
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1 changed files with 7 additions and 6 deletions
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13
Components/9918/9918.cpp
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@ -204,14 +204,15 @@ void TMS9918::run_for(const HalfCycles cycles) {
}
// Four more access windows: no collection.
if(access_pointer_ >= 15 && access_pointer_ < 19)
if(access_pointer_ >= 15 && access_pointer_ < 19) {
access_pointer_ = std::min(19, access_slot);
// Start new sprite set if this is location 19.
if(access_pointer_ == 19) {
active_sprite_set_ ^= 1;
sprite_sets_[active_sprite_set_].active_sprite_slot = 0;
sprites_stopped_ = false;
// Start new sprite set if this is location 19.
if(access_pointer_ == 19) {
active_sprite_set_ ^= 1;
sprite_sets_[active_sprite_set_].active_sprite_slot = 0;
sprites_stopped_ = false;
}
}
// Then eight access windows fetch the y position for the first eight sprites.