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tattack.cpp: emulated brick blinking effect (nw)

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This commit is contained in:
angelosa 2017-11-11 01:20:58 +01:00
parent bd035338bf
commit 6379ba875b
1 changed files with 15 additions and 1 deletions
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16
src/mame/drivers/tattack.cpp
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@ -17,7 +17,7 @@
TODO: TODO:
- non-tilemap video offsets/sizes are guessworked; - non-tilemap video offsets/sizes are guessworked;
- random brick flickering effect is unemulated (probably $e033 has a further role in this); - random brick flickering effect is guessworked too, leave MACHINE_IMPERFECT_COLORS in until is tested on HW.
- outputs (coin counter port same as sound writes?); - outputs (coin counter port same as sound writes?);
- some dipswitches; - some dipswitches;
- sound (requires Epson 7910 Multi-Melody emulation) - sound (requires Epson 7910 Multi-Melody emulation)
@ -142,6 +142,20 @@ void tattack_state::draw_gameplay_bitmap(bitmap_ind16 &bitmap, const rectangle &
{ {
bool draw_block = ((cur_column >> bit) & 1) == 1; bool draw_block = ((cur_column >> bit) & 1) == 1;
// blinking
// If player hits a blinking brick then a 30 seconds bonus is awarded.
// Sometimes game forgets to update the location or the blinking itself (both bits 0)
// can be either intentional or a game bug.
// TODO: the mask used here is guessed
if((m_ram[0x33] & 0x3) == 3)
{
int blink_row = m_ram[0x2b];
int blink_col = m_ram[0x2c];
if(bit == blink_col && (ram_offs & 0xf) == blink_row)
draw_block = false;
}
if(draw_block == true) if(draw_block == true)
{ {
for(xi=0;xi<3;xi++) for(xi=0;xi<3;xi++)