// license:BSD-3-Clause
// copyright-holders:Aaron Giles
/***************************************************************************
Atari Toobin' hardware
****************************************************************************/
#include "emu.h"
#include "machine/atarigen.h"
#include "includes/toobin.h"
/*************************************
*
* Tilemap callbacks
*
*************************************/
TILE_GET_INFO_MEMBER(toobin_state::get_alpha_tile_info)
{
uint16_t data = m_alpha_tilemap->basemem_read(tile_index);
int code = data & 0x3ff;
int color = (data >> 12) & 0x0f;
SET_TILE_INFO_MEMBER(2, code, color, (data >> 10) & 1);
}
TILE_GET_INFO_MEMBER(toobin_state::get_playfield_tile_info)
{
uint32_t data = m_playfield_tilemap->basemem_read(tile_index);
int code = data & 0x3fff;
int color = (data >> 16) & 0x0f;
SET_TILE_INFO_MEMBER(0, code, color, TILE_FLIPYX(data >> 14));
tileinfo.category = (data >> 20) & 3;
}
/*************************************
*
* Video system start
*
*************************************/
const atari_motion_objects_config toobin_state::s_mob_config =
{
1, /* index to which gfx system */
1, /* number of motion object banks */
1, /* are the entries linked? */
0, /* are the entries split? */
0, /* render in reverse order? */
1, /* render in swapped X/Y order? */
0, /* does the neighbor bit affect the next object? */
1024, /* pixels per SLIP entry (0 for no-slip) */
0, /* pixel offset for SLIPs */
0, /* maximum number of links to visit/scanline (0=all) */
0x100, /* base palette entry */
0x100, /* maximum number of colors */
0, /* transparent pen index */
{{ 0,0,0x00ff,0 }}, /* mask for the link */
{{ 0,0x3fff,0,0 }}, /* mask for the code index */
{{ 0,0,0,0x000f }}, /* mask for the color */
{{ 0,0,0,0xffc0 }}, /* mask for the X position */
{{ 0x7fc0,0,0,0 }}, /* mask for the Y position */
{{ 0x0007,0,0,0 }}, /* mask for the width, in tiles*/
{{ 0x0038,0,0,0 }}, /* mask for the height, in tiles */
{{ 0,0x4000,0,0 }}, /* mask for the horizontal flip */
{{ 0,0x8000,0,0 }}, /* mask for the vertical flip */
{{ 0 }}, /* mask for the priority */
{{ 0 }}, /* mask for the neighbor */
{{ 0x8000,0,0,0 }}, /* mask for absolute coordinates */
{{ 0 }}, /* mask for the special value */
0 /* resulting value to indicate "special" */
};
void toobin_state::video_start()
{
/* allocate a playfield bitmap for rendering */
m_screen->register_screen_bitmap(m_pfbitmap);
save_item(NAME(m_brightness));
}
/*************************************
*
* Palette RAM write handler
*
*************************************/
WRITE16_MEMBER( toobin_state::paletteram_w )
{
int newword;
COMBINE_DATA(&m_generic_paletteram_16[offset]);
newword = m_generic_paletteram_16[offset];
{
int red = (((newword >> 10) & 31) * 224) >> 5;
int green = (((newword >> 5) & 31) * 224) >> 5;
int blue = (((newword ) & 31) * 224) >> 5;
if (red) red += 38;
if (green) green += 38;
if (blue) blue += 38;
m_palette->set_pen_color(offset & 0x3ff, rgb_t(red, green, blue));
if (!(newword & 0x8000))
m_palette->set_pen_contrast(offset & 0x3ff, m_brightness);
else
m_palette->set_pen_contrast(offset & 0x3ff, 1.0);
}
}
WRITE16_MEMBER( toobin_state::intensity_w )
{
int i;
if (ACCESSING_BITS_0_7)
{
m_brightness = (double)(~data & 0x1f) / 31.0;
for (i = 0; i < 0x400; i++)
if (!(m_generic_paletteram_16[i] & 0x8000))
m_palette->set_pen_contrast(i, m_brightness);
}
}
/*************************************
*
* X/Y scroll handlers
*
*************************************/
WRITE16_MEMBER( toobin_state::xscroll_w )
{
uint16_t oldscroll = *m_xscroll;
uint16_t newscroll = oldscroll;
COMBINE_DATA(&newscroll);
/* if anything has changed, force a partial update */
if (newscroll != oldscroll)
m_screen->update_partial(m_screen->vpos());
/* update the playfield scrolling - hscroll is clocked on the following scanline */
m_playfield_tilemap->set_scrollx(0, newscroll >> 6);
m_mob->set_xscroll(newscroll >> 6);
/* update the data */
*m_xscroll = newscroll;
}
WRITE16_MEMBER( toobin_state::yscroll_w )
{
uint16_t oldscroll = *m_yscroll;
uint16_t newscroll = oldscroll;
COMBINE_DATA(&newscroll);
/* if anything has changed, force a partial update */
if (newscroll != oldscroll)
m_screen->update_partial(m_screen->vpos());
/* if bit 4 is zero, the scroll value is clocked in right away */
m_playfield_tilemap->set_scrolly(0, newscroll >> 6);
m_mob->set_yscroll((newscroll >> 6) & 0x1ff);
/* update the data */
*m_yscroll = newscroll;
}
/*************************************
*
* X/Y scroll handlers
*
*************************************/
WRITE16_MEMBER( toobin_state::slip_w )
{
uint16_t oldslip = m_mob->slipram(offset);
uint16_t newslip = oldslip;
COMBINE_DATA(&newslip);
/* if the SLIP is changing, force a partial update first */
if (oldslip != newslip)
m_screen->update_partial(m_screen->vpos());
/* update the data */
m_mob->slipram(offset) = newslip;
}
/*************************************
*
* Main refresh
*
*************************************/
uint32_t toobin_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)
{
// start drawing
m_mob->draw_async(cliprect);
/* draw the playfield */
bitmap_ind8 &priority_bitmap = screen.priority();
priority_bitmap.fill(0, cliprect);
m_playfield_tilemap->draw(screen, m_pfbitmap, cliprect, 0, 0);
m_playfield_tilemap->draw(screen, m_pfbitmap, cliprect, 1, 1);
m_playfield_tilemap->draw(screen, m_pfbitmap, cliprect, 2, 2);
m_playfield_tilemap->draw(screen, m_pfbitmap, cliprect, 3, 3);
/* draw and merge the MO */
bitmap_ind16 &mobitmap = m_mob->bitmap();
const pen_t *palette = m_palette->pens();
for (int y = cliprect.min_y; y <= cliprect.max_y; y++)
{
uint32_t *dest = &bitmap.pix32(y);
uint16_t *mo = &mobitmap.pix16(y);
uint16_t *pf = &m_pfbitmap.pix16(y);
uint8_t *pri = &priority_bitmap.pix8(y);
for (int x = cliprect.min_x; x <= cliprect.max_x; x++)
{
uint16_t pix = pf[x];
if (mo[x] != 0xffff)
{
/* not verified: logic is all controlled in a PAL
factors: LBPRI1-0, LBPIX3, ANPIX1-0, PFPIX3, PFPRI1-0,
(~LBPIX3 & ~LBPIX2 & ~LBPIX1 & ~LBPIX0)
*/
/* only draw if not high priority PF */
if (!pri[x] || !(pix & 8))
pix = mo[x];
}
dest[x] = palette[pix];
}
}
/* add the alpha on top */
m_alpha_tilemap->draw(screen, bitmap, cliprect, 0, 0);
return 0;
}