/***************************************************************************
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
*/
static int nycaptor_spot( running_machine &machine )
{
nycaptor_state *state = machine.driver_data<nycaptor_state>();
if (state->m_gametype == 0 || state->m_gametype == 2)
return state->m_sharedram[0x299] ? state->m_sharedram[0x298] : 0;
else
return 0;
}
WRITE8_HANDLER(nycaptor_spriteram_w)
{
nycaptor_state *state = space->machine().driver_data<nycaptor_state>();
state->m_spriteram[offset] = data;
}
READ8_HANDLER(nycaptor_spriteram_r)
{
nycaptor_state *state = space->machine().driver_data<nycaptor_state>();
return state->m_spriteram[offset];
}
static TILE_GET_INFO( get_tile_info )
{
nycaptor_state *state = machine.driver_data<nycaptor_state>();
int pal = state->m_videoram[tile_index * 2 + 1] & 0x0f;
tileinfo->category = (state->m_videoram[tile_index * 2 + 1] & 0x30) >> 4;
tileinfo->group = 0;
if ((!nycaptor_spot(machine)) && (pal == 6))
tileinfo->group = 1;
if (((nycaptor_spot(machine) == 3) && (pal == 8)) || ((nycaptor_spot(machine) == 1) && (pal == 0xc)))
tileinfo->group = 2;
if ((nycaptor_spot(machine) == 1) && (tileinfo->category == 2))
tileinfo->group = 3;
#if NYCAPTOR_DEBUG
if (state->m_mask & (1 << tileinfo->category))
{
if (nycaptor_spot(machine))
pal = 0xe;
else
pal = 4;
}
#endif
SET_TILE_INFO(
0,
state->m_videoram[tile_index * 2] + ((state->m_videoram[tile_index * 2 + 1] & 0xc0) << 2) + 0x400 * state->m_char_bank,
pal, 0
);
}
VIDEO_START( nycaptor )
{
nycaptor_state *state = machine.driver_data<nycaptor_state>();
state->m_spriteram = auto_alloc_array(machine, UINT8, 160);
state->m_bg_tilemap = tilemap_create(machine, get_tile_info, tilemap_scan_rows, 8, 8, 32, 32 );
tilemap_set_transmask(state->m_bg_tilemap, 0, 0xf800, 0x7ff); //split 0
tilemap_set_transmask(state->m_bg_tilemap, 1, 0xfe00, 0x01ff);//split 1
tilemap_set_transmask(state->m_bg_tilemap, 2, 0xfffc, 0x0003);//split 2
tilemap_set_transmask(state->m_bg_tilemap, 3, 0xfff0, 0x000f);//split 3
machine.generic.paletteram.u8 = auto_alloc_array(machine, UINT8, 0x200);
machine.generic.paletteram2.u8 = auto_alloc_array(machine, UINT8, 0x200);
tilemap_set_scroll_cols(state->m_bg_tilemap, 32);
state->save_pointer(NAME(state->m_spriteram), 160);
state_save_register_global_pointer(machine, machine.generic.paletteram.u8, 0x200);
state_save_register_global_pointer(machine, machine.generic.paletteram2.u8, 0x200);
}
WRITE8_HANDLER( nycaptor_videoram_w )
{
nycaptor_state *state = space->machine().driver_data<nycaptor_state>();
state->m_videoram[offset] = data;
tilemap_mark_tile_dirty(state->m_bg_tilemap, offset >> 1);
}
READ8_HANDLER( nycaptor_videoram_r )
{
nycaptor_state *state = space->machine().driver_data<nycaptor_state>();
return state->m_videoram[offset];
}
WRITE8_HANDLER( nycaptor_palette_w )
{
nycaptor_state *state = space->machine().driver_data<nycaptor_state>();
if (state->m_gametype == 2) //colt
return;
if (offset & 0x100)
paletteram_xxxxBBBBGGGGRRRR_split2_w(space, (offset & 0xff) + (state->m_palette_bank << 8), data);
else
paletteram_xxxxBBBBGGGGRRRR_split1_w(space, (offset & 0xff) + (state->m_palette_bank << 8), data);
}
READ8_HANDLER( nycaptor_palette_r )
{
nycaptor_state *state = space->machine().driver_data<nycaptor_state>();
if (offset & 0x100)
return space->machine().generic.paletteram2.u8[(offset & 0xff) + (state->m_palette_bank << 8)];
else
return space->machine().generic.paletteram.u8 [(offset & 0xff) + (state->m_palette_bank << 8)];
}
WRITE8_HANDLER( nycaptor_gfxctrl_w )
{
nycaptor_state *state = space->machine().driver_data<nycaptor_state>();
if (state->m_gfxctrl == data)
return;
state->m_gfxctrl = data;
if (state->m_char_bank != ((data & 0x18) >> 3))
{
state->m_char_bank = ((data & 0x18) >> 3);
tilemap_mark_all_tiles_dirty(state->m_bg_tilemap);
}
state->m_palette_bank = BIT(data, 5);
}
READ8_HANDLER( nycaptor_gfxctrl_r )
{
nycaptor_state *state = space->machine().driver_data<nycaptor_state>();
return state->m_gfxctrl;
}
READ8_HANDLER( nycaptor_scrlram_r )
{
nycaptor_state *state = space->machine().driver_data<nycaptor_state>();
return state->m_scrlram[offset];
}
WRITE8_HANDLER( nycaptor_scrlram_w )
{
nycaptor_state *state = space->machine().driver_data<nycaptor_state>();
state->m_scrlram[offset] = data;
tilemap_set_scrolly(state->m_bg_tilemap, offset, data);
}
static void draw_sprites( running_machine &machine, bitmap_t *bitmap, const rectangle *cliprect, int pri )
{
nycaptor_state *state = machine.driver_data<nycaptor_state>();
int i;
for (i = 0; i < 0x20; i++)
{
int pr = state->m_spriteram[0x9f - i];
int offs = (pr & 0x1f) * 4;
int code, sx, sy, flipx, flipy, pal, priori;
code = state->m_spriteram[offs + 2] + ((state->m_spriteram[offs + 1] & 0x10) << 4);//1 bit wolny = 0x20
pal = state->m_spriteram[offs + 1] & 0x0f;
sx = state->m_spriteram[offs + 3];
sy = 240 - state->m_spriteram[offs + 0];
priori = (pr & 0xe0) >> 5;
if (priori == pri)
{
#if NYCAPTOR_DEBUG
if (state->m_mask & (1 << (pri + 4))) pal = 0xd;
#endif
flipx = BIT(state->m_spriteram[offs + 1], 6);
flipy = BIT(state->m_spriteram[offs + 1], 7);
drawgfx_transpen(bitmap, cliprect, machine.gfx[1],
code,
pal,
flipx,flipy,
sx,sy,15);
if (state->m_spriteram[offs + 3] > 240)
{
sx = (state->m_spriteram[offs + 3] - 256);
drawgfx_transpen(bitmap, cliprect, machine.gfx[1],
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)) { state->m_mask |= y; tilemap_mark_all_tiles_dirty(state->m_bg_tilemap); }
static void nycaptor_setmask( running_machine &machine )
{
nycaptor_state *state = machine.driver_data<nycaptor_state>();
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)){state->m_mask = 0; tilemap_mark_all_tiles_dirty(state->m_bg_tilemap);} /* disable */
if (machine.input().code_pressed_once(KEYCODE_X)){state->m_mask |= 0x1000; tilemap_mark_all_tiles_dirty(state->m_bg_tilemap);} /* no layers */
}
#endif
SCREEN_UPDATE( nycaptor )
{
nycaptor_state *state = screen->machine().driver_data<nycaptor_state>();
#if NYCAPTOR_DEBUG
nycaptor_setmask(screen->machine());
if (state->m_mask & 0x1000)
{
tilemap_draw(bitmap, cliprect, state->m_bg_tilemap, TILEMAP_DRAW_LAYER1 | 3, 0);
tilemap_draw(bitmap, cliprect, state->m_bg_tilemap, TILEMAP_DRAW_LAYER0 | 3, 0);
tilemap_draw(bitmap, cliprect, state->m_bg_tilemap, TILEMAP_DRAW_LAYER1 | 2, 0);
tilemap_draw(bitmap, cliprect, state->m_bg_tilemap, TILEMAP_DRAW_LAYER0 | 2, 0);
tilemap_draw(bitmap, cliprect, state->m_bg_tilemap, TILEMAP_DRAW_LAYER1 | 1, 0);
tilemap_draw(bitmap, cliprect, state->m_bg_tilemap, TILEMAP_DRAW_LAYER0 | 1, 0);
tilemap_draw(bitmap, cliprect, state->m_bg_tilemap, TILEMAP_DRAW_LAYER1 | 0, 0);
tilemap_draw(bitmap, cliprect, state->m_bg_tilemap, TILEMAP_DRAW_LAYER0 | 0, 0);
draw_sprites(screen->machine(), bitmap, cliprect, 0);
draw_sprites(screen->machine(), bitmap, cliprect, 1);
draw_sprites(screen->machine(), bitmap, cliprect, 2);
draw_sprites(screen->machine(), bitmap, cliprect, 3);
draw_sprites(screen->machine(), bitmap, cliprect, 4);
draw_sprites(screen->machine(), bitmap, cliprect, 5);
draw_sprites(screen->machine(), bitmap, cliprect, 6);
draw_sprites(screen->machine(), bitmap, cliprect, 7);
}
else
#endif
switch (nycaptor_spot(screen->machine()) & 3)
{
case 0:
tilemap_draw(bitmap, cliprect, state->m_bg_tilemap, TILEMAP_DRAW_LAYER1 | 3, 0);
draw_sprites(screen->machine(), bitmap, cliprect, 6);
tilemap_draw(bitmap, cliprect, state->m_bg_tilemap, TILEMAP_DRAW_LAYER0 | 3, 0);
tilemap_draw(bitmap, cliprect, state->m_bg_tilemap, TILEMAP_DRAW_LAYER1 | 2, 0);
tilemap_draw(bitmap, cliprect, state->m_bg_tilemap, TILEMAP_DRAW_LAYER0 | 2, 0);
tilemap_draw(bitmap, cliprect, state->m_bg_tilemap, TILEMAP_DRAW_LAYER1 | 1, 0);
draw_sprites(screen->machine(), bitmap, cliprect, 3);
tilemap_draw(bitmap, cliprect, state->m_bg_tilemap, TILEMAP_DRAW_LAYER0 | 1, 0);
draw_sprites(screen->machine(), bitmap, cliprect, 0);
draw_sprites(screen->machine(), bitmap, cliprect, 2);
tilemap_draw(bitmap, cliprect, state->m_bg_tilemap, TILEMAP_DRAW_LAYER1 | 0, 0);
draw_sprites(screen->machine(), bitmap, cliprect, 1);
tilemap_draw(bitmap, cliprect, state->m_bg_tilemap, TILEMAP_DRAW_LAYER0 | 0, 0);
break;
case 1:
tilemap_draw(bitmap, cliprect, state->m_bg_tilemap, TILEMAP_DRAW_LAYER1 | 3, 0);
draw_sprites(screen->machine(), bitmap, cliprect, 3);
tilemap_draw(bitmap, cliprect, state->m_bg_tilemap, TILEMAP_DRAW_LAYER0 | 3, 0);
draw_sprites(screen->machine(), bitmap, cliprect, 2);
tilemap_draw(bitmap, cliprect, state->m_bg_tilemap, TILEMAP_DRAW_LAYER1 | 2, 0);
tilemap_draw(bitmap, cliprect, state->m_bg_tilemap, TILEMAP_DRAW_LAYER1 | 1, 0);
draw_sprites(screen->machine(), bitmap, cliprect, 1);
tilemap_draw(bitmap, cliprect, state->m_bg_tilemap, TILEMAP_DRAW_LAYER0 | 1, 0);
tilemap_draw(bitmap, cliprect, state->m_bg_tilemap, TILEMAP_DRAW_LAYER0 | 2, 0);
draw_sprites(screen->machine(), bitmap, cliprect, 0);
tilemap_draw(bitmap, cliprect, state->m_bg_tilemap, TILEMAP_DRAW_LAYER1 | 0, 0);
tilemap_draw(bitmap, cliprect, state->m_bg_tilemap, TILEMAP_DRAW_LAYER0 | 0, 0);
break;
case 2:
tilemap_draw(bitmap, cliprect, state->m_bg_tilemap, TILEMAP_DRAW_LAYER1 | 3, 0);
tilemap_draw(bitmap, cliprect, state->m_bg_tilemap, TILEMAP_DRAW_LAYER0 | 3, 0);
tilemap_draw(bitmap, cliprect, state->m_bg_tilemap, TILEMAP_DRAW_LAYER1 | 1, 0);
draw_sprites(screen->machine(), bitmap, cliprect, 1);
tilemap_draw(bitmap, cliprect, state->m_bg_tilemap, TILEMAP_DRAW_LAYER0 | 1, 0);
tilemap_draw(bitmap, cliprect, state->m_bg_tilemap, TILEMAP_DRAW_LAYER1 | 2, 0);
tilemap_draw(bitmap, cliprect, state->m_bg_tilemap, TILEMAP_DRAW_LAYER0 | 2, 0);
draw_sprites(screen->machine(), bitmap, cliprect, 0);
tilemap_draw(bitmap, cliprect, state->m_bg_tilemap, TILEMAP_DRAW_LAYER1 | 0, 0);
tilemap_draw(bitmap, cliprect, state->m_bg_tilemap, TILEMAP_DRAW_LAYER0 | 0, 0);
break;
case 3:
tilemap_draw(bitmap, cliprect, state->m_bg_tilemap, TILEMAP_DRAW_LAYER1 | 1, 0);
draw_sprites(screen->machine(), bitmap, cliprect, 1);
tilemap_draw(bitmap, cliprect, state->m_bg_tilemap, TILEMAP_DRAW_LAYER0 | 1, 0);
draw_sprites(screen->machine(), bitmap, cliprect, 0);
tilemap_draw(bitmap, cliprect, state->m_bg_tilemap, TILEMAP_DRAW_LAYER1 | 0, 0);
tilemap_draw(bitmap, cliprect, state->m_bg_tilemap, TILEMAP_DRAW_LAYER0 | 0, 0);
break;
}
return 0;
}