// license:BSD-3-Clause // copyright-holders:Mirko Buffoni #include "emu.h" #include "includes/higemaru.h" WRITE8_MEMBER(higemaru_state::higemaru_videoram_w) { m_videoram[offset] = data; m_bg_tilemap->mark_tile_dirty(offset); } WRITE8_MEMBER(higemaru_state::higemaru_colorram_w) { m_colorram[offset] = data; m_bg_tilemap->mark_tile_dirty(offset); } /*************************************************************************** Convert the color PROMs into a more useable format. ***************************************************************************/ PALETTE_INIT_MEMBER(higemaru_state, higemaru) { const uint8_t *color_prom = memregion("proms")->base(); int i; /* create a lookup table for the palette */ for (i = 0; i < 0x20; i++) { int bit0, bit1, bit2; int r, g, b; /* red component */ bit0 = (color_prom[i] >> 0) & 0x01; bit1 = (color_prom[i] >> 1) & 0x01; bit2 = (color_prom[i] >> 2) & 0x01; r = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2; /* green component */ bit0 = (color_prom[i] >> 3) & 0x01; bit1 = (color_prom[i] >> 4) & 0x01; bit2 = (color_prom[i] >> 5) & 0x01; g = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2; /* blue component */ bit0 = 0; bit1 = (color_prom[i] >> 6) & 0x01; bit2 = (color_prom[i] >> 7) & 0x01; b = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2; palette.set_indirect_color(i, rgb_t(r, g, b)); } /* color_prom now points to the beginning of the lookup table */ color_prom += 0x20; /* characters use colors 0-15 */ for (i = 0; i < 0x80; i++) { uint8_t ctabentry = color_prom[i] & 0x0f; palette.set_pen_indirect(i, ctabentry); } /* sprites use colors 16-31 */ for (i = 0x80; i < 0x180; i++) { uint8_t ctabentry = (color_prom[i + 0x80] & 0x0f) | 0x10; palette.set_pen_indirect(i, ctabentry); } } WRITE8_MEMBER(higemaru_state::higemaru_c800_w) { if (data & 0x7c) logerror("c800 = %02x\n",data); /* bits 0 and 1 are coin counters */ machine().bookkeeping().coin_counter_w(0,data & 2); machine().bookkeeping().coin_counter_w(1,data & 1); /* bit 7 flips screen */ if (flip_screen() != (data & 0x80)) { flip_screen_set(data & 0x80); m_bg_tilemap->mark_all_dirty(); } } TILE_GET_INFO_MEMBER(higemaru_state::get_bg_tile_info) { int code = m_videoram[tile_index] + ((m_colorram[tile_index] & 0x80) << 1); int color = m_colorram[tile_index] & 0x1f; SET_TILE_INFO_MEMBER(0, code, color, 0); } void higemaru_state::video_start() { m_bg_tilemap = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(FUNC(higemaru_state::get_bg_tile_info),this), TILEMAP_SCAN_ROWS, 8, 8, 32, 32); } void higemaru_state::draw_sprites( bitmap_ind16 &bitmap, const rectangle &cliprect ) { uint8_t *spriteram = m_spriteram; int offs; for (offs = m_spriteram.bytes() - 16; offs >= 0; offs -= 16) { int code,col,sx,sy,flipx,flipy; code = spriteram[offs] & 0x7f; col = spriteram[offs + 4] & 0x0f; sx = spriteram[offs + 12]; sy = spriteram[offs + 8]; flipx = spriteram[offs + 4] & 0x10; flipy = spriteram[offs + 4] & 0x20; if (flip_screen()) { sx = 240 - sx; sy = 240 - sy; flipx = !flipx; flipy = !flipy; } m_gfxdecode->gfx(1)->transpen(bitmap,cliprect, code, col, flipx,flipy, sx,sy,15); /* draw again with wraparound */ m_gfxdecode->gfx(1)->transpen(bitmap,cliprect, code, col, flipx,flipy, sx - 256,sy,15); } } uint32_t higemaru_state::screen_update_higemaru(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { m_bg_tilemap->draw(screen, bitmap, cliprect, 0, 0); draw_sprites(bitmap, cliprect); return 0; }