// license:BSD-3-Clause // copyright-holders:David Haywood /* Poke Champ */ #include "emu.h" #include "includes/pokechmp.h" WRITE8_MEMBER(pokechmp_state::pokechmp_videoram_w) { uint8_t *videoram = m_videoram; videoram[offset] = data; m_bg_tilemap->mark_tile_dirty(offset / 2); } WRITE8_MEMBER(pokechmp_state::pokechmp_flipscreen_w) { if (flip_screen() != (data & 0x80)) { flip_screen_set(data & 0x80); machine().tilemap().mark_all_dirty(); } } TILE_GET_INFO_MEMBER(pokechmp_state::get_bg_tile_info) { uint8_t *videoram = m_videoram; int code = videoram[tile_index*2+1] + ((videoram[tile_index*2] & 0x3f) << 8); int color = videoram[tile_index*2] >> 6; SET_TILE_INFO_MEMBER(0, code, color, 0); } void pokechmp_state::video_start() { m_bg_tilemap = &machine().tilemap().create( *m_gfxdecode, tilemap_get_info_delegate(*this, FUNC(pokechmp_state::get_bg_tile_info)), TILEMAP_SCAN_ROWS, 8, 8, 32, 32); } void pokechmp_state::draw_sprites(bitmap_ind16 &bitmap, const rectangle &cliprect) { uint8_t *spriteram = m_spriteram; int offs; for (offs = 0;offs < m_spriteram.bytes();offs += 4) { if (spriteram[offs] != 0xf8) { int sx,sy,flipx,flipy; sx = 240 - spriteram[offs+2]; sy = 240 - spriteram[offs]; flipx = spriteram[offs+1] & 0x04; flipy = spriteram[offs+1] & 0x02; if (flip_screen()) { sx=240-sx; sy=240-sy; if (flipx) flipx=0; else flipx=1; if (flipy) flipy=0; else flipy=1; } int tileno = spriteram[offs+3]; if (spriteram[offs+1] & 0x01) tileno += 0x100; if (spriteram[offs+1] & 0x08) tileno += 0x200; m_gfxdecode->gfx(1)->transpen(bitmap,cliprect, tileno, (spriteram[offs+1] & 0xf0) >> 4, flipx,flipy, sx,sy,0); } } } uint32_t pokechmp_state::screen_update_pokechmp(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { m_bg_tilemap->draw(screen, bitmap, cliprect, 0, 0); draw_sprites(bitmap, cliprect); return 0; }