// license:BSD-3-Clause
// copyright-holders:Tomasz Slanina
/***************************************************************************
video.c
Functions to emulate the video hardware of the machine.
***************************************************************************/
#include "emu.h"
#include "includes/nycaptor.h"
#define NYCAPTOR_DEBUG 0
/*
298 (e298) - spot (0-3) , 299 (e299) - lives
spot number isn't set to 0 in main menu ; lives - yes
sprites in main menu req priority 'type' 0
*/
int nycaptor_state::nycaptor_spot( )
{
if (m_gametype == 0 || m_gametype == 2)
return m_sharedram[0x299] ? m_sharedram[0x298] : 0;
else
return 0;
}
TILE_GET_INFO_MEMBER(nycaptor_state::get_tile_info)
{
int pal = m_videoram[tile_index * 2 + 1] & 0x0f;
tileinfo.category = (m_videoram[tile_index * 2 + 1] & 0x30) >> 4;
tileinfo.group = 0;
if ((!nycaptor_spot()) && (pal == 6))
tileinfo.group = 1;
if (((nycaptor_spot() == 3) && (pal == 8)) || ((nycaptor_spot() == 1) && (pal == 0xc)))
tileinfo.group = 2;
if ((nycaptor_spot() == 1) && (tileinfo.category == 2))
tileinfo.group = 3;
#if NYCAPTOR_DEBUG
if (m_mask & (1 << tileinfo.category))
{
if (nycaptor_spot())
pal = 0xe;
else
pal = 4;
}
#endif
SET_TILE_INFO_MEMBER(0,
m_videoram[tile_index * 2] + ((m_videoram[tile_index * 2 + 1] & 0xc0) << 2) + 0x400 * m_char_bank,
pal, 0
);
}
void nycaptor_state::video_start()
{
m_bg_tilemap = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(FUNC(nycaptor_state::get_tile_info),this), TILEMAP_SCAN_ROWS, 8, 8, 32, 32 );
m_bg_tilemap->set_transmask(0, 0xf800, 0x7ff); //split 0
m_bg_tilemap->set_transmask(1, 0xfe00, 0x01ff);//split 1
m_bg_tilemap->set_transmask(2, 0xfffc, 0x0003);//split 2
m_bg_tilemap->set_transmask(3, 0xfff0, 0x000f);//split 3
m_bg_tilemap->set_scroll_cols(32);
m_paletteram.resize(m_palette->entries());
m_paletteram_ext.resize(m_palette->entries());
m_palette->basemem().set(m_paletteram, ENDIANNESS_LITTLE, 1);
m_palette->extmem().set(m_paletteram_ext, ENDIANNESS_LITTLE, 1);
save_item(NAME(m_paletteram));
save_item(NAME(m_paletteram_ext));
}
WRITE8_MEMBER(nycaptor_state::nycaptor_videoram_w)
{
m_videoram[offset] = data;
m_bg_tilemap->mark_tile_dirty(offset >> 1);
}
WRITE8_MEMBER(nycaptor_state::nycaptor_palette_w)
{
if (offset & 0x100)
m_palette->write8_ext(space, (offset & 0xff) + (m_palette_bank << 8), data);
else
m_palette->write8(space, (offset & 0xff) + (m_palette_bank << 8), data);
}
READ8_MEMBER(nycaptor_state::nycaptor_palette_r)
{
if (offset & 0x100)
return m_paletteram_ext[(offset & 0xff) + (m_palette_bank << 8)];
else
return m_paletteram[(offset & 0xff) + (m_palette_bank << 8)];
}
WRITE8_MEMBER(nycaptor_state::nycaptor_gfxctrl_w)
{
m_gfxctrl = data;
if (m_char_bank != ((data & 0x18) >> 3))
{
m_char_bank = ((data & 0x18) >> 3);
m_bg_tilemap->mark_all_dirty();
}
m_palette_bank = BIT(data, 5);
}
READ8_MEMBER(nycaptor_state::nycaptor_gfxctrl_r)
{
return m_gfxctrl;
}
WRITE8_MEMBER(nycaptor_state::nycaptor_scrlram_w)
{
m_scrlram[offset] = data;
m_bg_tilemap->set_scrolly(offset, data);
}
void nycaptor_state::draw_sprites( bitmap_ind16 &bitmap, const rectangle &cliprect, int pri )
{
int i;
for (i = 0; i < 0x20; i++)
{
int pr = m_spriteram[0x9f - i];
int offs = (pr & 0x1f) * 4;
int code, sx, sy, flipx, flipy, pal, priori;
code = m_spriteram[offs + 2] + ((m_spriteram[offs + 1] & 0x10) << 4);//1 bit wolny = 0x20
pal = m_spriteram[offs + 1] & 0x0f;
sx = m_spriteram[offs + 3];
sy = 240 - m_spriteram[offs + 0];
priori = (pr & 0xe0) >> 5;
if (priori == pri)
{
#if NYCAPTOR_DEBUG
if (m_mask & (1 << (pri + 4))) pal = 0xd;
#endif
flipx = BIT(m_spriteram[offs + 1], 6);
flipy = BIT(m_spriteram[offs + 1], 7);
m_gfxdecode->gfx(1)->transpen(bitmap,cliprect,
code,
pal,
flipx,flipy,
sx,sy,15);
if (m_spriteram[offs + 3] > 240)
{
sx = (m_spriteram[offs + 3] - 256);
m_gfxdecode->gfx(1)->transpen(bitmap,cliprect,
code,
pal,
flipx,flipy,
sx,sy,15);
}
}
}
}
#if NYCAPTOR_DEBUG
/*
Keys :
q/w/e/r - bg priority display select
a/s/d/f/g/h/j/k - sprite priority display select
z - clear
x - no bg/sprite pri.
*/
#define mKEY_MASK(x,y) if (machine().input().code_pressed_once(x)) { m_mask |= y; m_bg_tilemap->mark_all_dirty(); }
void nycaptor_state::nycaptor_setmask( )
{
mKEY_MASK(KEYCODE_Q, 1); /* bg */
mKEY_MASK(KEYCODE_W, 2);
mKEY_MASK(KEYCODE_E, 4);
mKEY_MASK(KEYCODE_R, 8);
mKEY_MASK(KEYCODE_A, 0x10); /* sprites */
mKEY_MASK(KEYCODE_S, 0x20);
mKEY_MASK(KEYCODE_D, 0x40);
mKEY_MASK(KEYCODE_F, 0x80);
mKEY_MASK(KEYCODE_G, 0x100);
mKEY_MASK(KEYCODE_H, 0x200);
mKEY_MASK(KEYCODE_J, 0x400);
mKEY_MASK(KEYCODE_K, 0x800);
if (machine().input().code_pressed_once(KEYCODE_Z)){m_mask = 0; m_bg_tilemap->mark_all_dirty();} /* disable */
if (machine().input().code_pressed_once(KEYCODE_X)){m_mask |= 0x1000; m_bg_tilemap->mark_all_dirty();} /* no layers */
}
#endif
uint32_t nycaptor_state::screen_update_nycaptor(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
#if NYCAPTOR_DEBUG
nycaptor_setmask();
if (m_mask & 0x1000)
{
m_bg_tilemap->draw(screen, bitmap, cliprect, TILEMAP_DRAW_LAYER1 | 3, 0);
m_bg_tilemap->draw(screen, bitmap, cliprect, TILEMAP_DRAW_LAYER0 | 3, 0);
m_bg_tilemap->draw(screen, bitmap, cliprect, TILEMAP_DRAW_LAYER1 | 2, 0);
m_bg_tilemap->draw(screen, bitmap, cliprect, TILEMAP_DRAW_LAYER0 | 2, 0);
m_bg_tilemap->draw(screen, bitmap, cliprect, TILEMAP_DRAW_LAYER1 | 1, 0);
m_bg_tilemap->draw(screen, bitmap, cliprect, TILEMAP_DRAW_LAYER0 | 1, 0);
m_bg_tilemap->draw(screen, bitmap, cliprect, TILEMAP_DRAW_LAYER1 | 0, 0);
m_bg_tilemap->draw(screen, bitmap, cliprect, TILEMAP_DRAW_LAYER0 | 0, 0);
draw_sprites(bitmap, cliprect, 0);
draw_sprites(bitmap, cliprect, 1);
draw_sprites(bitmap, cliprect, 2);
draw_sprites(bitmap, cliprect, 3);
draw_sprites(bitmap, cliprect, 4);
draw_sprites(bitmap, cliprect, 5);
draw_sprites(bitmap, cliprect, 6);
draw_sprites(bitmap, cliprect, 7);
}
else
#endif
switch (nycaptor_spot() & 3)
{
case 0:
m_bg_tilemap->draw(screen, bitmap, cliprect, TILEMAP_DRAW_LAYER1 | 3, 0);
draw_sprites(bitmap, cliprect, 6);
m_bg_tilemap->draw(screen, bitmap, cliprect, TILEMAP_DRAW_LAYER0 | 3, 0);
m_bg_tilemap->draw(screen, bitmap, cliprect, TILEMAP_DRAW_LAYER1 | 2, 0);
m_bg_tilemap->draw(screen, bitmap, cliprect, TILEMAP_DRAW_LAYER0 | 2, 0);
m_bg_tilemap->draw(screen, bitmap, cliprect, TILEMAP_DRAW_LAYER1 | 1, 0);
draw_sprites(bitmap, cliprect, 3);
m_bg_tilemap->draw(screen, bitmap, cliprect, TILEMAP_DRAW_LAYER0 | 1, 0);
draw_sprites(bitmap, cliprect, 0);
draw_sprites(bitmap, cliprect, 2);
m_bg_tilemap->draw(screen, bitmap, cliprect, TILEMAP_DRAW_LAYER1 | 0, 0);
draw_sprites(bitmap, cliprect, 1);
m_bg_tilemap->draw(screen, bitmap, cliprect, TILEMAP_DRAW_LAYER0 | 0, 0);
break;
case 1:
m_bg_tilemap->draw(screen, bitmap, cliprect, TILEMAP_DRAW_LAYER1 | 3, 0);
draw_sprites(bitmap, cliprect, 3);
m_bg_tilemap->draw(screen, bitmap, cliprect, TILEMAP_DRAW_LAYER0 | 3, 0);
draw_sprites(bitmap, cliprect, 2);
m_bg_tilemap->draw(screen, bitmap, cliprect, TILEMAP_DRAW_LAYER1 | 2, 0);
m_bg_tilemap->draw(screen, bitmap, cliprect, TILEMAP_DRAW_LAYER1 | 1, 0);
draw_sprites(bitmap, cliprect, 1);
m_bg_tilemap->draw(screen, bitmap, cliprect, TILEMAP_DRAW_LAYER0 | 1, 0);
m_bg_tilemap->draw(screen, bitmap, cliprect, TILEMAP_DRAW_LAYER0 | 2, 0);
draw_sprites(bitmap, cliprect, 0);
m_bg_tilemap->draw(screen, bitmap, cliprect, TILEMAP_DRAW_LAYER1 | 0, 0);
m_bg_tilemap->draw(screen, bitmap, cliprect, TILEMAP_DRAW_LAYER0 | 0, 0);
break;
case 2:
m_bg_tilemap->draw(screen, bitmap, cliprect, TILEMAP_DRAW_LAYER1 | 3, 0);
m_bg_tilemap->draw(screen, bitmap, cliprect, TILEMAP_DRAW_LAYER0 | 3, 0);
m_bg_tilemap->draw(screen, bitmap, cliprect, TILEMAP_DRAW_LAYER1 | 1, 0);
draw_sprites(bitmap, cliprect, 1);
m_bg_tilemap->draw(screen, bitmap, cliprect, TILEMAP_DRAW_LAYER0 | 1, 0);
m_bg_tilemap->draw(screen, bitmap, cliprect, TILEMAP_DRAW_LAYER1 | 2, 0);
m_bg_tilemap->draw(screen, bitmap, cliprect, TILEMAP_DRAW_LAYER0 | 2, 0);
draw_sprites(bitmap, cliprect, 0);
m_bg_tilemap->draw(screen, bitmap, cliprect, TILEMAP_DRAW_LAYER1 | 0, 0);
m_bg_tilemap->draw(screen, bitmap, cliprect, TILEMAP_DRAW_LAYER0 | 0, 0);
break;
case 3:
m_bg_tilemap->draw(screen, bitmap, cliprect, TILEMAP_DRAW_LAYER1 | 1, 0);
draw_sprites(bitmap, cliprect, 1);
m_bg_tilemap->draw(screen, bitmap, cliprect, TILEMAP_DRAW_LAYER0 | 1, 0);
draw_sprites(bitmap, cliprect, 0);
m_bg_tilemap->draw(screen, bitmap, cliprect, TILEMAP_DRAW_LAYER1 | 0, 0);
m_bg_tilemap->draw(screen, bitmap, cliprect, TILEMAP_DRAW_LAYER0 | 0, 0);
break;
}
return 0;
}