// license:BSD-3-Clause
// copyright-holders:David Haywood, Pierpaolo Prazzoli
/************************************************************************
Quiz Panicuru Fantasy video hardware
************************************************************************/
#include "emu.h"
#include "includes/quizpani.h"
TILEMAP_MAPPER_MEMBER(quizpani_state::bg_scan)
{
/* logical (col,row) -> memory offset */
return (row & 0x0f) + ((col & 0xff) << 4) + ((row & 0x70) << 8);
}
TILE_GET_INFO_MEMBER(quizpani_state::bg_tile_info)
{
int code = m_bg_videoram[tile_index];
SET_TILE_INFO_MEMBER(1,
(code & 0xfff) + (0x1000 * m_bgbank),
code >> 12,
0);
}
TILE_GET_INFO_MEMBER(quizpani_state::txt_tile_info)
{
int code = m_txt_videoram[tile_index];
SET_TILE_INFO_MEMBER(0,
(code & 0xfff) + (0x1000 * m_txtbank),
code >> 12,
0);
}
WRITE16_MEMBER(quizpani_state::bg_videoram_w)
{
m_bg_videoram[offset] = data;
m_bg_tilemap->mark_tile_dirty(offset);
}
WRITE16_MEMBER(quizpani_state::txt_videoram_w)
{
m_txt_videoram[offset] = data;
m_txt_tilemap->mark_tile_dirty(offset);
}
WRITE16_MEMBER(quizpani_state::tilesbank_w)
{
if (ACCESSING_BITS_0_7)
{
if(m_txtbank != (data & 0x30)>>4)
{
m_txtbank = (data & 0x30)>>4;
m_txt_tilemap->mark_all_dirty();
}
if(m_bgbank != (data & 3))
{
m_bgbank = data & 3;
m_bg_tilemap->mark_all_dirty();
}
}
}
void quizpani_state::video_start()
{
m_bg_tilemap = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(*this, FUNC(quizpani_state::bg_tile_info)), tilemap_mapper_delegate(*this, FUNC(quizpani_state::bg_scan)), 16,16, 256,32);
m_txt_tilemap = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(*this, FUNC(quizpani_state::txt_tile_info)), tilemap_mapper_delegate(*this, FUNC(quizpani_state::bg_scan)), 16,16, 256,32);
m_txt_tilemap->set_transparent_pen(15);
save_item(NAME(m_bgbank));
save_item(NAME(m_txtbank));
}
uint32_t quizpani_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
m_bg_tilemap->set_scrollx(0, m_scrollreg[0] - 64);
m_bg_tilemap->set_scrolly(0, m_scrollreg[1] + 16);
m_txt_tilemap->set_scrollx(0, m_scrollreg[2] - 64);
m_txt_tilemap->set_scrolly(0, m_scrollreg[3] + 16);
m_bg_tilemap->draw(screen, bitmap, cliprect, 0,0);
m_txt_tilemap->draw(screen, bitmap, cliprect, 0,0);
return 0;
}