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funtech/supracan.cpp: implement lineselect for tilemaps

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This commit is contained in:
angelosa 2024-09-13 21:28:12 +02:00
parent 8a27f77083
commit 37f94e11ce
1 changed files with 12 additions and 0 deletions
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12
src/mame/funtech/supracan.cpp
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@ -225,6 +225,7 @@ private:
uint16_t m_tilemap_mode[3]{};
uint16_t m_tilemap_tile_mode[3]{};
uint16_t m_tilemap_linescrollx_addr[3]{};
uint16_t m_tilemap_lineselect_addr[3]{};
uint16_t m_window_control[2]{};
uint16_t m_window_start_addr[2]{};
@ -1119,6 +1120,13 @@ uint32_t supracan_state::screen_update(screen_device &screen, bitmap_ind16 &bitm
if (scrolly + y < 0 || scrolly + y > ((ysize * 8) - 1))
continue;
// slghtsag enables lineselect on load game
if (BIT(m_tilemap_tile_mode[layer], 11))
{
int16_t lineselect = (int16_t)m_vram[((m_tilemap_lineselect_addr[layer] << 1) + y ) & 0xffff];
realy = (lineselect + scrolly) & ((ysize * 8) - 1);
}
uint16_t *src = &src_bitmap.pix(realy & ((ysize * 8) - 1));
uint8_t *priop = &m_prio_bitmap.pix(y);
int line_scroll_x = scrollx;
@ -1130,6 +1138,7 @@ uint32_t supracan_state::screen_update(screen_device &screen, bitmap_ind16 &bitm
line_scroll_x += linescrollx;
}
for (int x = cliprect.min_x; x <= cliprect.max_x; x++)
{
int actualx = x & mosaic_mask;
@ -2085,6 +2094,7 @@ void supracan_state::video_w(offs_t offset, uint16_t data, uint16_t mem_mask)
case 0x108/2: m_tilemap_base_addr[0] = data << 1; LOGMASKED(LOG_TILEMAP0, "tilemap_base_addr[0] = %05x\n", data << 2); break;
case 0x10a/2: m_tilemap_mode[0] = data; LOGMASKED(LOG_TILEMAP0, "tilemap_mode[0] = %04x\n", data); break;
case 0x10c/2: m_tilemap_linescrollx_addr[0] = data; break;
case 0x10e/2: m_tilemap_lineselect_addr[0] = data; break;
/* Tilemap 1 */
case 0x120/2: {
@ -2099,6 +2109,7 @@ void supracan_state::video_w(offs_t offset, uint16_t data, uint16_t mem_mask)
case 0x128/2: m_tilemap_base_addr[1] = data << 1; LOGMASKED(LOG_TILEMAP1, "tilemap_base_addr[1] = %05x\n", data << 2); break;
case 0x12a/2: m_tilemap_mode[1] = data; LOGMASKED(LOG_TILEMAP1, "tilemap_mode[1] = %04x\n", data); break;
case 0x12c/2: m_tilemap_linescrollx_addr[1] = data; break;
case 0x12e/2: m_tilemap_lineselect_addr[1] = data; break;
/* Tilemap 2 */
case 0x140/2: {
@ -2113,6 +2124,7 @@ void supracan_state::video_w(offs_t offset, uint16_t data, uint16_t mem_mask)
case 0x148/2: m_tilemap_base_addr[2] = data << 1; LOGMASKED(LOG_TILEMAP2, "tilemap_base_addr[2] = %05x\n", data << 2); break;
case 0x14a/2: m_tilemap_mode[2] = data; LOGMASKED(LOG_TILEMAP2, "tilemap_mode[2] = %04x\n", data); break;
case 0x14c/2: m_tilemap_linescrollx_addr[2] = data; break;
case 0x14e/2: m_tilemap_lineselect_addr[2] = data; break;
/* ROZ */
case 0x180/2: {