// license:BSD-3-Clause // copyright-holders:Zsolt Vasvari #include "emu.h" #include "video/resnet.h" #include "includes/gotya.h" /*************************************************************************** Convert the color PROMs into a more useable format. ***************************************************************************/ void gotya_state::gotya_palette(palette_device &palette) const { uint8_t const *color_prom = memregion("proms")->base(); static constexpr int resistances_rg[3] = { 1000, 470, 220 }; static constexpr int resistances_b [2] = { 470, 220 }; // compute the color output resistor weights double rweights[3], gweights[3], bweights[2]; compute_resistor_weights(0, 255, -1.0, 3, &resistances_rg[0], rweights, 0, 0, 3, &resistances_rg[0], gweights, 0, 0, 2, &resistances_b[0], bweights, 0, 0); // create a lookup table for the palette for (int i = 0; i < 0x20; i++) { int bit0, bit1, bit2; // red component bit0 = BIT(color_prom[i], 0); bit1 = BIT(color_prom[i], 1); bit2 = BIT(color_prom[i], 2); int const r = combine_weights(rweights, bit0, bit1, bit2); // green component bit0 = BIT(color_prom[i], 3); bit1 = BIT(color_prom[i], 4); bit2 = BIT(color_prom[i], 5); int const g = combine_weights(gweights, bit0, bit1, bit2); // blue component bit0 = BIT(color_prom[i], 6); bit1 = BIT(color_prom[i], 7); int const b = combine_weights(bweights, bit0, bit1); palette.set_indirect_color(i, rgb_t(r, g, b)); } // color_prom now points to the beginning of the lookup table color_prom += 32; for (int i = 0; i < 0x40; i++) { uint8_t const ctabentry = color_prom[i] & 0x07; palette.set_pen_indirect(i, ctabentry); } } WRITE8_MEMBER(gotya_state::gotya_videoram_w) { m_videoram[offset] = data; m_bg_tilemap->mark_tile_dirty(offset); } WRITE8_MEMBER(gotya_state::gotya_colorram_w) { m_colorram[offset] = data; m_bg_tilemap->mark_tile_dirty(offset); } WRITE8_MEMBER(gotya_state::gotya_video_control_w) { /* bit 0 - scroll bit 8 bit 1 - flip screen bit 2 - sound disable ??? */ m_scroll_bit_8 = data & 0x01; if (flip_screen() != (data & 0x02)) { flip_screen_set(data & 0x02); machine().tilemap().mark_all_dirty(); } } TILE_GET_INFO_MEMBER(gotya_state::get_bg_tile_info) { int code = m_videoram[tile_index]; int color = m_colorram[tile_index] & 0x0f; SET_TILE_INFO_MEMBER(0, code, color, 0); } TILEMAP_MAPPER_MEMBER(gotya_state::tilemap_scan_rows_thehand) { /* logical (col,row) -> memory offset */ row = 31 - row; col = 63 - col; return ((row) * (num_cols >> 1)) + (col & 31) + ((col >> 5) * 0x400); } void gotya_state::video_start() { m_bg_tilemap = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(*this, FUNC(gotya_state::get_bg_tile_info)), tilemap_mapper_delegate(*this, FUNC(gotya_state::tilemap_scan_rows_thehand)), 8, 8, 64, 32); } void gotya_state::draw_status_row( bitmap_ind16 &bitmap, const rectangle &cliprect, int sx, int col ) { int row; if (flip_screen()) { sx = 35 - sx; } for (row = 29; row >= 0; row--) { int sy; if (flip_screen()) sy = row; else sy = 31 - row; m_gfxdecode->gfx(0)->opaque(bitmap,cliprect, m_videoram2[row * 32 + col], m_videoram2[row * 32 + col + 0x10] & 0x0f, flip_screen_x(), flip_screen_y(), 8 * sx, 8 * sy); } } void gotya_state::draw_sprites( bitmap_ind16 &bitmap, const rectangle &cliprect ) { uint8_t *spriteram = m_spriteram; int offs; for (offs = 2; offs < 0x0e; offs += 2) { int code = spriteram[offs + 0x01] >> 2; int color = spriteram[offs + 0x11] & 0x0f; int sx = 256 - spriteram[offs + 0x10] + (spriteram[offs + 0x01] & 0x01) * 256; int sy = spriteram[offs + 0x00]; if (flip_screen()) sy = 240 - sy; m_gfxdecode->gfx(1)->transpen(bitmap,cliprect, code, color, flip_screen_x(), flip_screen_y(), sx, sy, 0); } } void gotya_state::draw_status( bitmap_ind16 &bitmap, const rectangle &cliprect ) { draw_status_row(bitmap, cliprect, 0, 1); draw_status_row(bitmap, cliprect, 1, 0); draw_status_row(bitmap, cliprect, 2, 2); /* these two are blank, but I dont' know if the data comes */ draw_status_row(bitmap, cliprect, 33, 13); /* from RAM or 'hardcoded' into the hardware. Likely the latter */ draw_status_row(bitmap, cliprect, 35, 14); draw_status_row(bitmap, cliprect, 34, 15); } uint32_t gotya_state::screen_update_gotya(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { m_bg_tilemap->set_scrollx(0, -(*m_scroll + (m_scroll_bit_8 * 256)) - 2 * 8); m_bg_tilemap->draw(screen, bitmap, cliprect, 0, 0); draw_sprites(bitmap, cliprect); draw_status(bitmap, cliprect); return 0; }