// license:BSD-3-Clause // copyright-holders:David Haywood, Paul Priest /* One Shot One Kill Video Hardware */ #include "emu.h" #include "includes/oneshot.h" /* bg tilemap */ TILE_GET_INFO_MEMBER(oneshot_state::get_bg_tile_info) { const u32 tileno = m_bg_videoram[tile_index * 2 + 1]; tileinfo.set(0, tileno, 0, 0); } void oneshot_state::bg_videoram_w(offs_t offset, u16 data, u16 mem_mask) { COMBINE_DATA(&m_bg_videoram[offset]); m_bg_tilemap->mark_tile_dirty(offset / 2); } /* mid tilemap */ TILE_GET_INFO_MEMBER(oneshot_state::get_mid_tile_info) { const u32 tileno = m_mid_videoram[tile_index * 2 + 1]; tileinfo.set(0, tileno, 2, 0); } void oneshot_state::mid_videoram_w(offs_t offset, u16 data, u16 mem_mask) { COMBINE_DATA(&m_mid_videoram[offset]); m_mid_tilemap->mark_tile_dirty(offset / 2); } /* fg tilemap */ TILE_GET_INFO_MEMBER(oneshot_state::get_fg_tile_info) { const u32 tileno = m_fg_videoram[tile_index * 2 + 1]; tileinfo.set(0, tileno, 3, 0); } void oneshot_state::fg_videoram_w(offs_t offset, u16 data, u16 mem_mask) { COMBINE_DATA(&m_fg_videoram[offset]); m_fg_tilemap->mark_tile_dirty(offset / 2); } void oneshot_state::video_start() { m_bg_tilemap = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(*this, FUNC(oneshot_state::get_bg_tile_info)), TILEMAP_SCAN_ROWS, 16, 16, 32, 32); m_mid_tilemap = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(*this, FUNC(oneshot_state::get_mid_tile_info)), TILEMAP_SCAN_ROWS, 16, 16, 32, 32); m_fg_tilemap = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(*this, FUNC(oneshot_state::get_fg_tile_info)), TILEMAP_SCAN_ROWS, 16, 16, 32, 32); m_bg_tilemap->set_transparent_pen(0); m_mid_tilemap->set_transparent_pen(0); m_fg_tilemap->set_transparent_pen(0); } void oneshot_state::draw_crosshairs() { //int xpos,ypos; /* get gun raw coordinates (player 1) */ m_gun_x_p1 = (m_io_lightgun_x[0]->read() & 0xff) * 320 / 256; m_gun_y_p1 = (m_io_lightgun_y[0]->read() & 0xff) * 240 / 256; /* compute the coordinates for drawing (from routine at 0x009ab0) */ //xpos = m_gun_x_p1; //ypos = m_gun_y_p1; m_gun_x_p1 += m_gun_x_shift; m_gun_y_p1 -= 0x0a; if (m_gun_y_p1 < 0) m_gun_y_p1 = 0; /* get gun raw coordinates (player 2) */ m_gun_x_p2 = (m_io_lightgun_x[1]->read() & 0xff) * 320 / 256; m_gun_y_p2 = (m_io_lightgun_y[1]->read() & 0xff) * 240 / 256; /* compute the coordinates for drawing (from routine at 0x009b6e) */ //xpos = m_gun_x_p2; //ypos = m_gun_y_p2; m_gun_x_p2 += m_gun_x_shift - 0x0a; if (m_gun_x_p2 < 0) m_gun_x_p2 = 0; } void oneshot_state::draw_sprites(bitmap_ind16 &bitmap, const rectangle &cliprect) { const u16 *source = m_spriteram; const u16 *finish = source + (0x1000 / 2); gfx_element *gfx = m_gfxdecode->gfx(1); while (source < finish) { const u16 attr = source[0]; if (attr & 0x0001) // end of sprites break; if (!(attr & 0x8000)) // visible bit { source += 0x4; continue; } const u32 num = source[1] & 0xffff; const int xsize = (source[2] & 0x000f) + 1; const int ysize = (source[3] & 0x000f) + 1; int ypos = source[3] & 0xff80; int xpos = source[2] & 0xff80; ypos = ypos >> 7; xpos = xpos >> 7; xpos -= 8; ypos -= 6; for (int blockx = 0; blockx < xsize; blockx++) { for (int blocky = 0; blocky < ysize; blocky++) { gfx->transpen( bitmap, cliprect, num + (blocky * xsize) + blockx, 1, 0,0, xpos + blockx * 8, ypos + blocky * 8, 0); gfx->transpen( bitmap, cliprect, num + (blocky * xsize) + blockx, 1, 0,0, xpos + blockx * 8 - 0x200, ypos + blocky * 8, 0); } } source += 0x4; } } u32 oneshot_state::screen_update_oneshot(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { bitmap.fill(m_palette->black_pen(), cliprect); m_mid_tilemap->set_scrollx(0, m_scroll[0] - 0x1f5); m_mid_tilemap->set_scrolly(0, m_scroll[1]); m_bg_tilemap->draw(screen, bitmap, cliprect, 0, 0); m_mid_tilemap->draw(screen, bitmap, cliprect, 0, 0); draw_sprites(bitmap, cliprect); m_fg_tilemap->draw(screen, bitmap, cliprect, 0, 0); draw_crosshairs(); return 0; } u32 oneshot_state::screen_update_maddonna(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { bitmap.fill(m_palette->black_pen(), cliprect); m_mid_tilemap->set_scrolly(0, m_scroll[1]); // other registers aren't used so we don't know which layers they relate to m_mid_tilemap->draw(screen, bitmap, cliprect, 0, 0); m_fg_tilemap->draw(screen, bitmap, cliprect, 0, 0); m_bg_tilemap->draw(screen, bitmap, cliprect, 0, 0); draw_sprites(bitmap, cliprect); // popmessage ("%04x %04x %04x %04x %04x %04x %04x %04x", m_scroll[0], m_scroll[1], m_scroll[2], m_scroll[3], m_scroll[4], m_scroll[5], m_scroll[6], m_scroll[7]); return 0; } // why are the layers in a different order? u32 oneshot_state::screen_update_komocomo(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { bitmap.fill(m_palette->black_pen(), cliprect); m_mid_tilemap->set_scrolly(0, m_scroll[1]); // other registers aren't used so we don't know which layers they relate to m_bg_tilemap->draw(screen, bitmap, cliprect, 0, 0); m_mid_tilemap->draw(screen, bitmap, cliprect, 0, 0); m_fg_tilemap->draw(screen, bitmap, cliprect, 0, 0); draw_sprites(bitmap, cliprect); // popmessage ("%04x %04x %04x %04x %04x %04x %04x %04x", m_scroll[0], m_scroll[1], m_scroll[2], m_scroll[3], m_scroll[4], m_scroll[5], m_scroll[6], m_scroll[7]); return 0; }