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Corrects first line sprite row selection.

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Thomas Harte
2018-10-16 21:16:29 -04:00
parent 0f7bf6d6c6
commit b4f871a2ef
1 changed files with 1 additions and 1 deletions
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Components/9918/9918.cpp
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@@ -124,7 +124,7 @@ void Base::posit_sprite(LineBuffer &buffer, int sprite_number, int sprite_positi
return; return;
} }
const int sprite_row = (screen_row - sprite_position)&255; const int sprite_row = ((screen_row + 1) % mode_timing_.total_lines) - ((sprite_position + 1) & 255);
if(sprite_row < 0 || sprite_row >= sprite_height_) return; if(sprite_row < 0 || sprite_row >= sprite_height_) return;
if(buffer.active_sprite_slot == mode_timing_.maximum_visible_sprites) { if(buffer.active_sprite_slot == mode_timing_.maximum_visible_sprites) {