/******************************************************************************
Video Hardware for Video System Mahjong series and Pipe Dream.
Driver by Takahiro Nogi <nogi@kt.rim.or.jp> 2001/02/04 -
and Bryan McPhail, Nicola Salmoria, Aaron Giles
******************************************************************************/
#include "driver.h"
#include "fromance.h"
static UINT8 selected_videoram;
static UINT8 *local_videoram[2];
static UINT8 selected_paletteram;
static UINT8 *local_paletteram;
static UINT32 scrollx[2], scrolly[2];
static UINT8 gfxreg;
static UINT8 flipscreen;
static UINT32 scrolly_ofs;
static UINT32 scrollx_ofs;
static UINT8 crtc_register;
static UINT8 crtc_data[0x10];
static emu_timer *crtc_timer;
static UINT8 flipscreen_old = -1;
static tilemap *bg_tilemap, *fg_tilemap;
static TIMER_CALLBACK( crtc_interrupt_gen );
/*************************************
*
* Tilemap callbacks
*
*************************************/
INLINE void get_fromance_tile_info(running_machine *machine,tile_data *tileinfo,int tile_index,int layer)
{
int tile = ((local_videoram[layer][0x0000 + tile_index] & 0x80) << 9) |
(local_videoram[layer][0x1000 + tile_index] << 8) |
local_videoram[layer][0x2000 + tile_index];
int color = local_videoram[layer][tile_index] & 0x7f;
SET_TILE_INFO(layer, tile, color, 0);
}
static TILE_GET_INFO( get_fromance_bg_tile_info ) { get_fromance_tile_info(machine,tileinfo,tile_index, 0); }
static TILE_GET_INFO( get_fromance_fg_tile_info ) { get_fromance_tile_info(machine,tileinfo,tile_index, 1); }
INLINE void get_nekkyoku_tile_info(running_machine *machine,tile_data *tileinfo,int tile_index,int layer)
{
int tile = (local_videoram[layer][0x0000 + tile_index] << 8) |
local_videoram[layer][0x1000 + tile_index];
int color = local_videoram[layer][tile_index + 0x2000] & 0x3f;
SET_TILE_INFO(layer, tile, color, 0);
}
static TILE_GET_INFO( get_nekkyoku_bg_tile_info ) { get_nekkyoku_tile_info(machine, tileinfo, tile_index, 0); }
static TILE_GET_INFO( get_nekkyoku_fg_tile_info ) { get_nekkyoku_tile_info(machine, tileinfo, tile_index, 1); }
/*************************************
*
* Video system start
*
*************************************/
VIDEO_START( fromance )
{
/* allocate tilemaps */
bg_tilemap = tilemap_create(get_fromance_bg_tile_info, tilemap_scan_rows, TILEMAP_TYPE_PEN, 8,4, 64,64);
fg_tilemap = tilemap_create(get_fromance_fg_tile_info, tilemap_scan_rows, TILEMAP_TYPE_PEN, 8,4, 64,64);
/* allocate local videoram */
local_videoram[0] = auto_malloc(0x1000 * 3);
local_videoram[1] = auto_malloc(0x1000 * 3);
/* allocate local palette RAM */
local_paletteram = auto_malloc(0x800 * 2);
/* configure tilemaps */
tilemap_set_transparent_pen(fg_tilemap,15);
/* reset the timer */
crtc_timer = timer_alloc(crtc_interrupt_gen);
scrollx_ofs = 0x159;
scrolly_ofs = 0x10;
/* state save */
state_save_register_global(selected_videoram);
state_save_register_global_pointer(local_videoram[0], 0x1000 * 3);
state_save_register_global_pointer(local_videoram[1], 0x1000 * 3);
state_save_register_global(selected_paletteram);
state_save_register_global_array(scrollx);
state_save_register_global_array(scrolly);
state_save_register_global(gfxreg);
state_save_register_global(flipscreen);
state_save_register_global(flipscreen_old);
state_save_register_global(scrollx_ofs);
state_save_register_global(scrolly_ofs);
state_save_register_global(crtc_register);
state_save_register_global_array(crtc_data);
state_save_register_global_pointer(local_paletteram, 0x800 * 2);
}
VIDEO_START( nekkyoku )
{
/* allocate tilemaps */
bg_tilemap = tilemap_create(get_nekkyoku_bg_tile_info, tilemap_scan_rows, TILEMAP_TYPE_PEN, 8,4, 64,64);
fg_tilemap = tilemap_create(get_nekkyoku_fg_tile_info, tilemap_scan_rows, TILEMAP_TYPE_PEN, 8,4, 64,64);
/* allocate local videoram */
local_videoram[0] = auto_malloc(0x1000 * 3);
local_videoram[1] = auto_malloc(0x1000 * 3);
/* allocate local palette RAM */
local_paletteram = auto_malloc(0x800 * 2);
/* configure tilemaps */
tilemap_set_transparent_pen(fg_tilemap,15);
/* reset the timer */
crtc_timer = timer_alloc(crtc_interrupt_gen);
scrollx_ofs = 0x159;
scrolly_ofs = 0x10;
/* state save */
state_save_register_global(selected_videoram);
state_save_register_global_pointer(local_videoram[0], 0x1000 * 3);
state_save_register_global_pointer(local_videoram[1], 0x1000 * 3);
state_save_register_global(selected_paletteram);
state_save_register_global_array(scrollx);
state_save_register_global_array(scrolly);
state_save_register_global(gfxreg);
state_save_register_global(flipscreen);
state_save_register_global(flipscreen_old);
state_save_register_global(scrollx_ofs);
state_save_register_global(scrolly_ofs);
state_save_register_global(crtc_register);
state_save_register_global_array(crtc_data);
state_save_register_global_pointer(local_paletteram, 0x800 * 2);
}
VIDEO_START( pipedrm )
{
video_start_fromance(machine);
scrolly_ofs = 0x00;
}
VIDEO_START( hatris )
{
video_start_fromance(machine);
scrollx_ofs = 0xB9;
scrolly_ofs = 0x00;
}
/*************************************
*
* Graphics control register
*
*************************************/
WRITE8_HANDLER( fromance_gfxreg_w )
{
gfxreg = data;
flipscreen = (data & 0x01);
selected_videoram = (~data >> 1) & 1;
selected_paletteram = (data >> 6) & 1;
if (flipscreen != flipscreen_old)
{
flipscreen_old = flipscreen;
tilemap_set_flip(ALL_TILEMAPS, flipscreen ? (TILEMAP_FLIPX | TILEMAP_FLIPY) : 0);
}
}
/*************************************
*
* Banked palette RAM
*
*************************************/
READ8_HANDLER( fromance_paletteram_r )
{
/* adjust for banking and read */
offset |= selected_paletteram << 11;
return local_paletteram[offset];
}
WRITE8_HANDLER( fromance_paletteram_w )
{
int palword;
/* adjust for banking and modify */
offset |= selected_paletteram << 11;
local_paletteram[offset] = data;
/* compute R,G,B */
palword = (local_paletteram[offset | 1] << 8) | local_paletteram[offset & ~1];
palette_set_color_rgb(Machine, offset / 2, pal5bit(palword >> 10), pal5bit(palword >> 5), pal5bit(palword >> 0));
}
/*************************************
*
* Video RAM read/write
*
*************************************/
READ8_HANDLER( fromance_videoram_r )
{
return local_videoram[selected_videoram][offset];
}
WRITE8_HANDLER( fromance_videoram_w )
{
local_videoram[selected_videoram][offset] = data;
tilemap_mark_tile_dirty(selected_videoram ? fg_tilemap : bg_tilemap, offset & 0x0fff);
}
/*************************************
*
* Scroll registers
*
*************************************/
WRITE8_HANDLER( fromance_scroll_w )
{
if (flipscreen)
{
switch (offset)
{
case 0:
scrollx[1] = (data + (((gfxreg & 0x08) >> 3) * 0x100) - scrollx_ofs);
break;
case 1:
scrolly[1] = (data + (((gfxreg & 0x04) >> 2) * 0x100) - scrolly_ofs); // - 0x10
break;
case 2:
scrollx[0] = (data + (((gfxreg & 0x20) >> 5) * 0x100) - scrollx_ofs);
break;
case 3:
scrolly[0] = (data + (((gfxreg & 0x10) >> 4) * 0x100) - scrolly_ofs);
break;
}
}
else
{
switch (offset)
{
case 0:
scrollx[1] = (data + (((gfxreg & 0x08) >> 3) * 0x100) - 0x1f7);
break;
case 1:
scrolly[1] = (data + (((gfxreg & 0x04) >> 2) * 0x100) - 0xf9);
break;
case 2:
scrollx[0] = (data + (((gfxreg & 0x20) >> 5) * 0x100) - 0x1f7);
break;
case 3:
scrolly[0] = (data + (((gfxreg & 0x10) >> 4) * 0x100) - 0xf9);
break;
}
}
}
/*************************************
*
* Fake video controller
*
*************************************/
static TIMER_CALLBACK( crtc_interrupt_gen )
{
cpunum_set_input_line(1, 0, HOLD_LINE);
if (param != 0)
timer_adjust(crtc_timer, attotime_make(0, machine->screen[0].refresh / param), 0, attotime_make(0, machine->screen[0].refresh / param));
}
WRITE8_HANDLER( fromance_crtc_data_w )
{
crtc_data[crtc_register] = data;
switch (crtc_register)
{
/* only register we know about.... */
case 0x0b:
timer_adjust(crtc_timer, video_screen_get_time_until_pos(0, Machine->screen[0].visarea.max_y + 1, 0), (data > 0x80) ? 2 : 1, attotime_zero);
break;
default:
logerror("CRTC register %02X = %02X\n", crtc_register, data & 0xff);
break;
}
}
WRITE8_HANDLER( fromance_crtc_register_w )
{
crtc_register = data;
}
/*************************************
*
* Sprite routines (Pipe Dream)
*
*************************************/
static void draw_sprites(running_machine *machine, mame_bitmap *bitmap, const rectangle *cliprect, int draw_priority)
{
static const UINT8 zoomtable[16] = { 0,7,14,20,25,30,34,38,42,46,49,52,54,57,59,61 };
int offs;
/* draw the sprites */
for (offs = 0; offs < spriteram_size; offs += 8)
{
int data2 = spriteram[offs + 4] | (spriteram[offs + 5] << 8);
int priority = (data2 >> 4) & 1;
/* turns out the sprites are the same as in aerofgt.c */
if ((data2 & 0x80) && priority == draw_priority)
{
int data0 = spriteram[offs + 0] | (spriteram[offs + 1] << 8);
int data1 = spriteram[offs + 2] | (spriteram[offs + 3] << 8);
int data3 = spriteram[offs + 6] | (spriteram[offs + 7] << 8);
int code = data3 & 0xfff;
int color = data2 & 0x0f;
int y = (data0 & 0x1ff) - 6;
int x = (data1 & 0x1ff) - 13;
int yzoom = (data0 >> 12) & 15;
int xzoom = (data1 >> 12) & 15;
int zoomed = (xzoom | yzoom);
int ytiles = ((data2 >> 12) & 7) + 1;
int xtiles = ((data2 >> 8) & 7) + 1;
int yflip = (data2 >> 15) & 1;
int xflip = (data2 >> 11) & 1;
int xt, yt;
/* compute the zoom factor -- stolen from aerofgt.c */
xzoom = 16 - zoomtable[xzoom] / 8;
yzoom = 16 - zoomtable[yzoom] / 8;
/* wrap around */
if (x > machine->screen[0].visarea.max_x) x -= 0x200;
if (y > machine->screen[0].visarea.max_y) y -= 0x200;
/* flip ? */
if (flipscreen)
{
y = machine->screen[0].visarea.max_y - y - 16 * ytiles - 4;
x = machine->screen[0].visarea.max_x - x - 16 * xtiles - 24;
xflip=!xflip;
yflip=!yflip;
}
/* normal case */
if (!xflip && !yflip)
{
for (yt = 0; yt < ytiles; yt++)
for (xt = 0; xt < xtiles; xt++, code++)
if (!zoomed)
drawgfx(bitmap, machine->gfx[2], code, color, 0, 0,
x + xt * 16, y + yt * 16, cliprect, TRANSPARENCY_PEN, 15);
else
drawgfxzoom(bitmap, machine->gfx[2], code, color, 0, 0,
x + xt * xzoom, y + yt * yzoom, cliprect, TRANSPARENCY_PEN, 15,
0x1000 * xzoom, 0x1000 * yzoom);
}
/* xflipped case */
else if (xflip && !yflip)
{
for (yt = 0; yt < ytiles; yt++)
for (xt = 0; xt < xtiles; xt++, code++)
if (!zoomed)
drawgfx(bitmap, machine->gfx[2], code, color, 1, 0,
x + (xtiles - 1 - xt) * 16, y + yt * 16, cliprect, TRANSPARENCY_PEN, 15);
else
drawgfxzoom(bitmap, machine->gfx[2], code, color, 1, 0,
x + (xtiles - 1 - xt) * xzoom, y + yt * yzoom, cliprect, TRANSPARENCY_PEN, 15,
0x1000 * xzoom, 0x1000 * yzoom);
}
/* yflipped case */
else if (!xflip && yflip)
{
for (yt = 0; yt < ytiles; yt++)
for (xt = 0; xt < xtiles; xt++, code++)
if (!zoomed)
drawgfx(bitmap, machine->gfx[2], code, color, 0, 1,
x + xt * 16, y + (ytiles - 1 - yt) * 16, cliprect, TRANSPARENCY_PEN, 15);
else
drawgfxzoom(bitmap, machine->gfx[2], code, color, 0, 1,
x + xt * xzoom, y + (ytiles - 1 - yt) * yzoom, cliprect, TRANSPARENCY_PEN, 15,
0x1000 * xzoom, 0x1000 * yzoom);
}
/* x & yflipped case */
else
{
for (yt = 0; yt < ytiles; yt++)
for (xt = 0; xt < xtiles; xt++, code++)
if (!zoomed)
drawgfx(bitmap, machine->gfx[2], code, color, 1, 1,
x + (xtiles - 1 - xt) * 16, y + (ytiles - 1 - yt) * 16, cliprect, TRANSPARENCY_PEN, 15);
else
drawgfxzoom(bitmap, machine->gfx[2], code, color, 1, 1,
x + (xtiles - 1 - xt) * xzoom, y + (ytiles - 1 - yt) * yzoom, cliprect, TRANSPARENCY_PEN, 15,
0x1000 * xzoom, 0x1000 * yzoom);
}
}
}
}
/*************************************
*
* Main screen refresh
*
*************************************/
VIDEO_UPDATE( fromance )
{
tilemap_set_scrollx(bg_tilemap, 0, scrollx[0]);
tilemap_set_scrolly(bg_tilemap, 0, scrolly[0]);
tilemap_set_scrollx(fg_tilemap, 0, scrollx[1]);
tilemap_set_scrolly(fg_tilemap, 0, scrolly[1]);
tilemap_draw(bitmap,cliprect, bg_tilemap, 0, 0);
tilemap_draw(bitmap,cliprect, fg_tilemap, 0, 0);
return 0;
}
VIDEO_UPDATE( pipedrm )
{
/* there seems to be no logical mapping for the X scroll register -- maybe it's gone */
tilemap_set_scrolly(bg_tilemap, 0, scrolly[1]);
tilemap_set_scrolly(fg_tilemap, 0, scrolly[0]);
tilemap_draw(bitmap,cliprect, bg_tilemap, 0, 0);
tilemap_draw(bitmap,cliprect, fg_tilemap, 0, 0);
draw_sprites(machine,bitmap,cliprect, 0);
draw_sprites(machine,bitmap,cliprect, 1);
return 0;
}