// license:BSD-3-Clause // copyright-holders:Phil Stroffolino, Carlos A. Lozano, Rob Rosenbrock /*************************************************************************** Renegade Video Hardware ***************************************************************************/ #include "emu.h" #include "includes/renegade.h" void renegade_state::bg_videoram_w(offs_t offset, uint8_t data) { m_bg_videoram[offset] = data; m_bg_tilemap->mark_tile_dirty(offset & 0x3ff); } void renegade_state::fg_videoram_w(offs_t offset, uint8_t data) { m_fg_videoram[offset] = data; m_fg_tilemap->mark_tile_dirty(offset & 0x3ff); } void renegade_state::flipscreen_w(uint8_t data) { flip_screen_set(~data & 0x01); } void renegade_state::scroll_lsb_w(uint8_t data) { m_scrollx = (m_scrollx & 0xff00) | data; } void renegade_state::scroll_msb_w(uint8_t data) { m_scrollx = (m_scrollx & 0xff) | (data << 8); } TILE_GET_INFO_MEMBER(renegade_state::get_bg_tilemap_info) { const uint8_t *source = &m_bg_videoram[tile_index]; uint8_t attributes = source[0x400]; /* CCC??BBB */ tileinfo.set(1 + (attributes & 0x7), source[0], attributes >> 5, 0); } TILE_GET_INFO_MEMBER(renegade_state::get_fg_tilemap_info) { const uint8_t *source = &m_fg_videoram[tile_index]; uint8_t attributes = source[0x400]; tileinfo.set(0, ((attributes & 3) << 8) | source[0], attributes >> 6, 0); } void renegade_state::video_start() { m_bg_tilemap = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(*this, FUNC(renegade_state::get_bg_tilemap_info)), TILEMAP_SCAN_ROWS, 16, 16, 64, 16); m_fg_tilemap = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(*this, FUNC(renegade_state::get_fg_tilemap_info)), TILEMAP_SCAN_ROWS, 8, 8, 32, 32); m_fg_tilemap->set_transparent_pen(0); m_bg_tilemap->set_scrolldx(256, 0); m_fg_tilemap->set_scrolldy(10, 10); m_bg_tilemap->set_scrolldy(10, 10); save_item(NAME(m_scrollx)); } void renegade_state::draw_sprites(bitmap_ind16 &bitmap, const rectangle &cliprect) { uint8_t *source = m_spriteram; uint8_t *finish = source + 96 * 4; while (source < finish) { // reference: stage 1 boss in kuniokun is aligned with the train door int sy = 234 - source[0]; //if (sy >= 0) { int attributes = source[1]; /* SFCCBBBB */ int sx = source[3]; int sprite_number = source[2]; int sprite_bank = 9 + (attributes & 0xf); int color = (attributes >> 4) & 0x3; int xflip = attributes & 0x40; if (sx > 248) sx -= 256; // wrap-around (stage 2 bike tires) if (sy < 0) sy += 256; if (flip_screen()) { sx = 240 - sx; sy = 260 - sy; xflip = !xflip; } if (attributes & 0x80) /* big sprite */ { m_gfxdecode->gfx(sprite_bank)->transpen(bitmap,cliprect, sprite_number | 1, color, xflip, flip_screen(), sx, sy + (flip_screen() ? -16 : 16), 0); } else { sy += (flip_screen() ? -16 : 16); } m_gfxdecode->gfx(sprite_bank)->transpen(bitmap,cliprect, sprite_number, color, xflip, flip_screen(), sx, sy, 0); } source += 4; } } uint32_t renegade_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { m_bg_tilemap->set_scrollx(0, m_scrollx); m_bg_tilemap->draw(screen, bitmap, cliprect, 0 , 0); draw_sprites(bitmap, cliprect); m_fg_tilemap->draw(screen, bitmap, cliprect, 0 , 0); return 0; }