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/***************************************************************************
-= Run Deep / The Deep =-
driver by Luca Elia (l.elia@tin.it)
[ 1 Horizontally Scrolling Layer ]
Size : 512 x 512
Tiles: 16 x 16 x 4.
In addition to a global x & y scroll register each tile-wide column
has its own y scroll register.
[ 1 Fixed Layer ]
Size : 256 x 256
Tiles: 8 x 8 x 2.
[ 128? sprites ]
Sprites tiles are 16 x 16 x 4. Each sprite has a height and width
specified (1,2,4, or 8 tiles).
A sprite of width N uses N consecutive sprites: the first one specifies
all the data (position,flip), the following ones only the tile code and
color for that column (tile codes in each column are consecutive).
***************************************************************************/
#include "emu.h"
#include "includes/thedeep.h"
/***************************************************************************
Callbacks for the TileMap code
***************************************************************************/
TILEMAP_MAPPER_MEMBER(thedeep_state::tilemap_scan_rows_back)
{
return (col & 0x0f) + ((col & 0x10) << 5) + (row << 4);
}
TILE_GET_INFO_MEMBER(thedeep_state::get_tile_info_0)
{
UINT8 code = m_vram_0[ tile_index * 2 + 0 ];
UINT8 color = m_vram_0[ tile_index * 2 + 1 ];
SET_TILE_INFO_MEMBER(1,
code + (color << 8),
(color & 0xf0) >> 4,
TILE_FLIPX ); // why?
}
TILE_GET_INFO_MEMBER(thedeep_state::get_tile_info_1)
{
UINT8 code = m_vram_1[ tile_index * 2 + 0 ];
UINT8 color = m_vram_1[ tile_index * 2 + 1 ];
SET_TILE_INFO_MEMBER(2,
code + (color << 8),
(color & 0xf0) >> 4,
0);
}
WRITE8_MEMBER(thedeep_state::vram_0_w)
{
m_vram_0[offset] = data;
m_tilemap_0->mark_tile_dirty(offset / 2);
}
WRITE8_MEMBER(thedeep_state::vram_1_w)
{
m_vram_1[offset] = data;
m_tilemap_1->mark_tile_dirty(offset / 2);
}
/***************************************************************************
Palette Init
***************************************************************************/
PALETTE_INIT_MEMBER(thedeep_state, thedeep)
{
const UINT8 *color_prom = memregion("proms")->base();
int i;
for (i = 0;i < 512;i++)
palette.set_pen_color(i,pal4bit(color_prom[0x400 + i] >> 0),pal4bit(color_prom[0x400 + i] >> 4),pal4bit(color_prom[0x200 + i] >> 0));
}
/***************************************************************************
Video Init
***************************************************************************/
void thedeep_state::video_start()
{
m_tilemap_0 = &machine().tilemap().create(m_gfxdecode, tilemap_get_info_delegate(FUNC(thedeep_state::get_tile_info_0),this),tilemap_mapper_delegate(FUNC(thedeep_state::tilemap_scan_rows_back),this),16,16,0x20,0x20);
m_tilemap_1 = &machine().tilemap().create(m_gfxdecode, tilemap_get_info_delegate(FUNC(thedeep_state::get_tile_info_1),this),TILEMAP_SCAN_ROWS,8,8,0x20,0x20);
m_tilemap_0->set_transparent_pen(0 );
m_tilemap_1->set_transparent_pen(0 );
m_tilemap_0->set_scroll_cols(0x20); // column scroll for the background
}
/***************************************************************************
Screen Drawing
***************************************************************************/
UINT32 thedeep_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
int scrollx = m_scroll[0] + (m_scroll[1]<<8);
int scrolly = m_scroll[2] + (m_scroll[3]<<8);
int x;
m_tilemap_0->set_scrollx(0, scrollx);
for (x = 0; x < 0x20; x++)
{
int y = m_scroll2[x*2+0] + (m_scroll2[x*2+1]<<8);
m_tilemap_0->set_scrolly(x, y + scrolly);
}
bitmap.fill(m_palette->black_pen(), cliprect);
m_tilemap_0->draw(screen, bitmap, cliprect, 0,0);
m_spritegen->draw_sprites(bitmap, cliprect, reinterpret_cast<UINT16 *>(m_spriteram.target()), 0x00, 0x00, 0x0f);
m_tilemap_1->draw(screen, bitmap, cliprect, 0,0);
return 0;
}
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