// license:BSD-3-Clause
// copyright-holders:David Haywood
/* Mogura Desse */

#include "emu.h"
#include "includes/konamipt.h"

#include "cpu/z80/z80.h"
#include "sound/dac.h"
#include "emupal.h"
#include "screen.h"
#include "speaker.h"
#include "tilemap.h"


class mogura_state : public driver_device
{
public:
	mogura_state(const machine_config &mconfig, device_type type, const char *tag) :
		driver_device(mconfig, type, tag),
		m_maincpu(*this, "maincpu"),
		m_ldac(*this, "ldac"),
		m_rdac(*this, "rdac"),
		m_gfxram(*this, "gfxram"),
		m_tileram(*this, "tileram"),
		m_gfxdecode(*this, "gfxdecode")
	{ }

	void mogura(machine_config &config);

private:
	required_device<cpu_device> m_maincpu;
	required_device<dac_byte_interface> m_ldac;
	required_device<dac_byte_interface> m_rdac;
	required_shared_ptr<uint8_t> m_gfxram;
	required_shared_ptr<uint8_t> m_tileram;
	required_device<gfxdecode_device> m_gfxdecode;

	tilemap_t *m_tilemap;
	void mogura_tileram_w(offs_t offset, uint8_t data);
	void mogura_dac_w(uint8_t data);
	void mogura_gfxram_w(offs_t offset, uint8_t data);
	TILE_GET_INFO_MEMBER(get_mogura_tile_info);
	virtual void machine_start() override;
	virtual void video_start() override;
	void mogura_palette(palette_device &palette) const;
	uint32_t screen_update_mogura(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
	void mogura_io_map(address_map &map);
	void mogura_map(address_map &map);
};


void mogura_state::mogura_palette(palette_device &palette) const
{
	uint8_t const *const color_prom = memregion("proms")->base();
	for (int i = 0, j = 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 = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2;
		// green component
		bit0 = BIT(color_prom[i], 3);
		bit1 = BIT(color_prom[i], 4);
		bit2 = BIT(color_prom[i], 5);
		int const g = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2;
		// blue component
		bit0 = 0;
		bit1 = BIT(color_prom[i], 6);
		bit2 = BIT(color_prom[i], 7);
		int const b = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2;

		palette.set_pen_color(j, rgb_t(r, g, b));
		j += 4;
		if (j > 31)
			j -= 31;
	}
}


TILE_GET_INFO_MEMBER(mogura_state::get_mogura_tile_info)
{
	int code = m_tileram[tile_index];
	int attr = m_tileram[tile_index + 0x800];

	tileinfo.set(0,
			code,
			(attr >> 1) & 7,
			0);
}


void mogura_state::video_start()
{
	m_gfxdecode->gfx(0)->set_source(m_gfxram);
	m_tilemap = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(*this, FUNC(mogura_state::get_mogura_tile_info)), TILEMAP_SCAN_ROWS, 8, 8, 64, 32);
}

uint32_t mogura_state::screen_update_mogura(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
	const rectangle &visarea = screen.visible_area();

	/* tilemap layout is a bit strange ... */
	rectangle clip = visarea;
	clip.max_x = 256 - 1;
	m_tilemap->set_scrollx(0, 256);
	m_tilemap->draw(screen, bitmap, clip, 0, 0);

	clip.min_x = 256;
	clip.max_x = 512 - 1;
	m_tilemap->set_scrollx(0, -128);
	m_tilemap->draw(screen, bitmap, clip, 0, 0);

	return 0;
}

void mogura_state::mogura_tileram_w(offs_t offset, uint8_t data)
{
	m_tileram[offset] = data;
	m_tilemap->mark_tile_dirty(offset & 0x7ff);
}

void mogura_state::mogura_dac_w(uint8_t data)
{
	m_ldac->write(data >> 4);
	m_rdac->write(data & 15);
}


void mogura_state::mogura_gfxram_w(offs_t offset, uint8_t data)
{
	m_gfxram[offset] = data ;

	m_gfxdecode->gfx(0)->mark_dirty(offset / 16);
}


void mogura_state::mogura_map(address_map &map)
{
	map(0x0000, 0x7fff).rom();
	map(0xc000, 0xdfff).ram(); // main ram
	map(0xe000, 0xefff).ram().w(FUNC(mogura_state::mogura_gfxram_w)).share("gfxram"); // ram based characters
	map(0xf000, 0xffff).ram().w(FUNC(mogura_state::mogura_tileram_w)).share("tileram"); // tilemap
}

void mogura_state::mogura_io_map(address_map &map)
{
	map.global_mask(0xff);
	map(0x00, 0x00).nopw();    // ??
	map(0x08, 0x08).portr("SYSTEM");
	map(0x0c, 0x0c).portr("P1");
	map(0x0d, 0x0d).portr("P2");
	map(0x0e, 0x0e).portr("P3");
	map(0x0f, 0x0f).portr("P4");
	map(0x10, 0x10).portr("SERVICE");
	map(0x14, 0x14).w(FUNC(mogura_state::mogura_dac_w)); /* 4 bit DAC x 2. MSB = left, LSB = right */
}

static INPUT_PORTS_START( mogura )
	PORT_START("SYSTEM")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_COIN1 )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_COIN2 )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_COIN3 )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_COIN4 )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_SERVICE1 )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_SERVICE2 )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_SERVICE3 )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_SERVICE4 )

	PORT_START("P1")
	KONAMI8_B123_START(1)

	PORT_START("P2")
	KONAMI8_B123_START(2)

	PORT_START("P3")
	KONAMI8_B123_START(3)

	PORT_START("P4")
	KONAMI8_B123_START(4)

	PORT_START("SERVICE")
	PORT_SERVICE_NO_TOGGLE( 0x01, IP_ACTIVE_LOW)
	PORT_BIT( 0xfe, IP_ACTIVE_LOW, IPT_UNUSED )
INPUT_PORTS_END



static const gfx_layout tiles8x8_layout =
{
	8,8,
	0x1000*8/(16*8),
	2,
	{ 0, 1 },
	{ 0, 2, 4, 6, 8, 10, 12, 14 },
	{ 0*16, 1*16, 2*16, 3*16, 4*16, 5*16, 6*16, 7*16 },
	16*8
};

static GFXDECODE_START( gfx_mogura )
	GFXDECODE_ENTRY( nullptr, 0, tiles8x8_layout, 0, 8 )
GFXDECODE_END

void mogura_state::machine_start()
{
}

void mogura_state::mogura(machine_config &config)
{
	/* basic machine hardware */
	Z80(config, m_maincpu, 3000000);         /* 3 MHz */
	m_maincpu->set_addrmap(AS_PROGRAM, &mogura_state::mogura_map);
	m_maincpu->set_addrmap(AS_IO, &mogura_state::mogura_io_map);
	m_maincpu->set_vblank_int("screen", FUNC(mogura_state::irq0_line_hold));

	/* video hardware */
	screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER));
	screen.set_refresh_hz(60); // ?
	screen.set_vblank_time(ATTOSECONDS_IN_USEC(0));
	screen.set_size(512, 512);
	screen.set_visarea(0, 320-1, 0, 256-1);
	screen.set_screen_update(FUNC(mogura_state::screen_update_mogura));
	screen.set_palette("palette");

	GFXDECODE(config, m_gfxdecode, "palette", gfx_mogura);
	PALETTE(config, "palette", FUNC(mogura_state::mogura_palette), 32);

	/* sound hardware */
	SPEAKER(config, "lspeaker").front_left();
	SPEAKER(config, "rspeaker").front_right();
	DAC_4BIT_R2R(config, m_ldac, 0).add_route(ALL_OUTPUTS, "lspeaker", 0.25); // unknown DAC
	DAC_4BIT_R2R(config, m_rdac, 0).add_route(ALL_OUTPUTS, "rspeaker", 0.25); // unknown DAC
}


ROM_START( mogura )
	ROM_REGION( 0x10000, "maincpu", 0 )
	ROM_LOAD( "gx141.5n", 0x00000, 0x08000, CRC(98e6120d) SHA1(45cdb2d78224a7c44fff8cd3487f33c57669a06c)  )

	ROM_REGION( 0x20, "proms", 0 )
	ROM_LOAD( "gx141.7j", 0x00, 0x20,  CRC(b21c5d5f) SHA1(6913c840dd69a7d4687f4c4cbe3ff12300f62bc2) )
ROM_END

GAME( 1991, mogura, 0, mogura, mogura, mogura_state, empty_init, ROT0, "Konami", "Mogura Desse (Japan)", MACHINE_SUPPORTS_SAVE )
