// license:BSD-3-Clause
// copyright-holders:David Haywood
/* Aquarium */
#include "emu.h"
#include "includes/aquarium.h"
/* TXT Layer */
TILE_GET_INFO_MEMBER(aquarium_state::get_txt_tile_info)
{
const u32 tileno = (m_txt_videoram[tile_index] & 0x0fff);
const u32 colour = (m_txt_videoram[tile_index] & 0xf000) >> 12;
SET_TILE_INFO_MEMBER(0, tileno, colour, 0);
tileinfo.category = (m_txt_videoram[tile_index] & 0x8000) >> 15;
}
void aquarium_state::txt_videoram_w(offs_t offset, u16 data, u16 mem_mask)
{
COMBINE_DATA(&m_txt_videoram[offset]);
m_txt_tilemap->mark_tile_dirty(offset);
}
/* MID Layer */
TILE_GET_INFO_MEMBER(aquarium_state::get_mid_tile_info)
{
const u32 tileno = (m_mid_videoram[tile_index * 2] & 0x0fff);
const u32 colour = (m_mid_videoram[tile_index * 2 + 1] & 0x001f);
const int flag = TILE_FLIPYX((m_mid_videoram[tile_index * 2 + 1] & 0x300) >> 8);
SET_TILE_INFO_MEMBER(1, tileno, colour, flag);
tileinfo.category = (m_mid_videoram[tile_index * 2 + 1] & 0x20) >> 5;
}
void aquarium_state::mid_videoram_w(offs_t offset, u16 data, u16 mem_mask)
{
COMBINE_DATA(&m_mid_videoram[offset]);
m_mid_tilemap->mark_tile_dirty(offset / 2);
}
/* BAK Layer */
TILE_GET_INFO_MEMBER(aquarium_state::get_bak_tile_info)
{
const u32 tileno = (m_bak_videoram[tile_index * 2] & 0x0fff);
const u32 colour = (m_bak_videoram[tile_index * 2 + 1] & 0x001f);
const int flag = TILE_FLIPYX((m_bak_videoram[tile_index * 2 + 1] & 0x300) >> 8);
SET_TILE_INFO_MEMBER(2, tileno, colour, flag);
tileinfo.category = (m_bak_videoram[tile_index * 2 + 1] & 0x20) >> 5;
}
void aquarium_state::bak_videoram_w(offs_t offset, u16 data, u16 mem_mask)
{
COMBINE_DATA(&m_bak_videoram[offset]);
m_bak_tilemap->mark_tile_dirty(offset / 2);
}
void aquarium_state::video_start()
{
m_txt_tilemap = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(*this, FUNC(aquarium_state::get_txt_tile_info)), TILEMAP_SCAN_ROWS, 8, 8, 64, 64);
m_mid_tilemap = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(*this, FUNC(aquarium_state::get_mid_tile_info)), TILEMAP_SCAN_ROWS, 16, 16, 32, 32);
m_bak_tilemap = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(*this, FUNC(aquarium_state::get_bak_tile_info)), TILEMAP_SCAN_ROWS, 16, 16, 32, 32);
m_txt_tilemap->set_transparent_pen(0);
m_mid_tilemap->set_transparent_pen(0);
m_bak_tilemap->set_transparent_pen(0);
}
void aquarium_state::aquarium_colpri_cb(u32 &colour, u32 &pri_mask)
{
pri_mask = 0;
if (colour & 8)
pri_mask |= (GFX_PMASK_2 | GFX_PMASK_4 | GFX_PMASK_8);
}
uint32_t aquarium_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
m_mid_tilemap->set_scrollx(0, m_scroll[0]);
m_mid_tilemap->set_scrolly(0, m_scroll[1]);
m_bak_tilemap->set_scrollx(0, m_scroll[2]);
m_bak_tilemap->set_scrolly(0, m_scroll[3]);
m_txt_tilemap->set_scrollx(0, m_scroll[4]);
m_txt_tilemap->set_scrolly(0, m_scroll[5]);
screen.priority().fill(0, cliprect);
bitmap.fill(0, cliprect); // WDUD logo suggests this
m_bak_tilemap->draw(screen, bitmap, cliprect, 0, 1);
m_mid_tilemap->draw(screen, bitmap, cliprect, 0, 2);
m_txt_tilemap->draw(screen, bitmap, cliprect, 1, 4);
m_bak_tilemap->draw(screen, bitmap, cliprect, 1, 8);
m_sprgen->aquarium_draw_sprites(screen, bitmap, cliprect, 16);
m_mid_tilemap->draw(screen, bitmap, cliprect, 1, 0);
m_txt_tilemap->draw(screen, bitmap, cliprect, 0, 0);
return 0;
}