/***************************************************************************
Armed Formation video emulation
***************************************************************************/
#include "emu.h"
#include "includes/armedf.h"
/***************************************************************************
Callbacks for the TileMap code
***************************************************************************/
static TILEMAP_MAPPER( armedf_scan_type1 )
{ /* col: 0..63; row: 0..31 */
/* armed formation */
return col * 32 + row;
}
static TILEMAP_MAPPER( armedf_scan_type2 )
{ /* col: 0..63; row: 0..31 */
return 32 * (31 - row) + (col & 0x1f) + 0x800 * (col / 32);
}
static TILEMAP_MAPPER( armedf_scan_type3 )
{ /* col: 0..63; row: 0..31 */
/* legion & legiono */
return (col & 0x1f) * 32 + row + 0x800 * (col / 32);
}
static TILE_GET_INFO( get_nb1414m4_tx_tile_info )
{
armedf_state *state = machine.driver_data<armedf_state>();
int tile_number = state->m_text_videoram[tile_index] & 0xff;
int attributes;
/* TODO: Armed F doesn't seem to use the NB1414M4! */
//if (state->m_scroll_type == 1)
// attributes = state->m_text_videoram[tile_index + 0x800] & 0xff;
//else
{
attributes = state->m_text_videoram[tile_index + 0x400] & 0xff;
if(tile_index < 0x12) /* don't draw the NB1414M4 params! TODO: could be a better fix */
tile_number = attributes = 0x00;
}
/* bit 3 controls priority, (0) nb1414m4 has priority over all the other video layers */
tileinfo->category = (attributes & 0x8) >> 3;
SET_TILE_INFO(
0,
tile_number + 256 * (attributes & 0x3),
attributes >> 4,
0);
}
static TILE_GET_INFO( get_armedf_tx_tile_info )
{
armedf_state *state = machine.driver_data<armedf_state>();
int tile_number = state->m_text_videoram[tile_index] & 0xff;
int attributes;
/* TODO: Armed F doesn't seem to use the NB1414M4! */
//if (state->m_scroll_type == 1)
attributes = state->m_text_videoram[tile_index + 0x800] & 0xff;
//else
//{
// attributes = state->m_text_videoram[tile_index + 0x400] & 0xff;
//
// if(tile_index < 0x12) /* don't draw the NB1414M4 params! TODO: could be a better fix */
// tile_number = attributes = 0x00;
//}
/* bit 3 controls priority, (0) nb1414m4 has priority over all the other video layers */
tileinfo->category = (attributes & 0x8) >> 3;
SET_TILE_INFO(
0,
tile_number + 256 * (attributes & 0x3),
attributes >> 4,
0);
}
static TILE_GET_INFO( get_fg_tile_info )
{
armedf_state *state = machine.driver_data<armedf_state>();
int data = state->m_fg_videoram[tile_index];
SET_TILE_INFO(
1,
data&0x7ff,
data>>11,
0);
}
static TILE_GET_INFO( get_bg_tile_info )
{
armedf_state *state = machine.driver_data<armedf_state>();
int data = state->m_bg_videoram[tile_index];
SET_TILE_INFO(
2,
data & 0x3ff,
data >> 11,
0);
}
/***************************************************************************
Start the video hardware emulation.
***************************************************************************/
VIDEO_START( terraf )
{
armedf_state *state = machine.driver_data<armedf_state>();
state->m_sprite_offy = (state->m_scroll_type & 2 ) ? 0 : 128; /* legion, legiono, crazy climber 2 */
state->m_bg_tilemap = tilemap_create(machine, get_bg_tile_info, tilemap_scan_cols, 16, 16, 64, 32);
state->m_fg_tilemap = tilemap_create(machine, get_fg_tile_info, tilemap_scan_cols, 16, 16, 64, 32);
state->m_tx_tilemap = tilemap_create(machine, get_nb1414m4_tx_tile_info, (state->m_scroll_type == 2) ? armedf_scan_type3 : armedf_scan_type2, 8, 8, 64, 32);
tilemap_set_transparent_pen(state->m_bg_tilemap, 0xf);
tilemap_set_transparent_pen(state->m_fg_tilemap, 0xf);
tilemap_set_transparent_pen(state->m_tx_tilemap, 0xf);
if (state->m_scroll_type != 1)
tilemap_set_scrollx(state->m_tx_tilemap, 0, -128);
state->m_text_videoram = auto_alloc_array(machine, UINT8, 0x1000);
}
VIDEO_START( armedf )
{
armedf_state *state = machine.driver_data<armedf_state>();
state->m_sprite_offy = (state->m_scroll_type & 2 ) ? 0 : 128; /* legion, legiono, crazy climber 2 */
state->m_bg_tilemap = tilemap_create(machine, get_bg_tile_info, tilemap_scan_cols, 16, 16, 64, 32);
state->m_fg_tilemap = tilemap_create(machine, get_fg_tile_info, tilemap_scan_cols, 16, 16, 64, 32);
state->m_tx_tilemap = tilemap_create(machine, get_armedf_tx_tile_info, armedf_scan_type1, 8, 8, 64, 32);
tilemap_set_transparent_pen(state->m_bg_tilemap, 0xf);
tilemap_set_transparent_pen(state->m_fg_tilemap, 0xf);
tilemap_set_transparent_pen(state->m_tx_tilemap, 0xf);
if (state->m_scroll_type != 1)
tilemap_set_scrollx(state->m_tx_tilemap, 0, -128);
state->m_text_videoram = auto_alloc_array(machine, UINT8, 0x1000);
}
/***************************************************************************
Memory handlers
***************************************************************************/
READ8_HANDLER( nb1414m4_text_videoram_r )
{
armedf_state *state = space->machine().driver_data<armedf_state>();
return state->m_text_videoram[offset];
}
WRITE8_HANDLER( nb1414m4_text_videoram_w )
{
armedf_state *state = space->machine().driver_data<armedf_state>();
state->m_text_videoram[offset] = data;
tilemap_mark_tile_dirty(state->m_tx_tilemap, offset & 0x7ff);
}
READ8_HANDLER( armedf_text_videoram_r )
{
armedf_state *state = space->machine().driver_data<armedf_state>();
return state->m_text_videoram[offset];
}
WRITE8_HANDLER( armedf_text_videoram_w )
{
armedf_state *state = space->machine().driver_data<armedf_state>();
state->m_text_videoram[offset] = data;
tilemap_mark_tile_dirty(state->m_tx_tilemap, offset & 0x7ff);
}
WRITE16_HANDLER( armedf_fg_videoram_w )
{
armedf_state *state = space->machine().driver_data<armedf_state>();
COMBINE_DATA(&state->m_fg_videoram[offset]);
tilemap_mark_tile_dirty(state->m_fg_tilemap, offset);
}
WRITE16_HANDLER( armedf_bg_videoram_w )
{
armedf_state *state = space->machine().driver_data<armedf_state>();
COMBINE_DATA(&state->m_bg_videoram[offset]);
tilemap_mark_tile_dirty(state->m_bg_tilemap, offset);
}
WRITE16_HANDLER( terraf_fg_scrolly_w )
{
armedf_state *state = space->machine().driver_data<armedf_state>();
if (ACCESSING_BITS_8_15)
{
state->m_fg_scrolly = ((data >> 8) & 0xff) | (state->m_fg_scrolly & 0x300);
state->m_waiting_msb = 1;
}
}
WRITE16_HANDLER( terraf_fg_scrollx_w )
{
armedf_state *state = space->machine().driver_data<armedf_state>();
if (ACCESSING_BITS_8_15)
{
if (state->m_waiting_msb)
{
state->m_scroll_msb = data >> 8;
state->m_fg_scrollx = (state->m_fg_scrollx & 0xff) | (((state->m_scroll_msb >> 4) & 3) << 8);
state->m_fg_scrolly = (state->m_fg_scrolly & 0xff) | (((state->m_scroll_msb >> 0) & 3) << 8);
//popmessage("%04X %04X %04X",data,state->m_fg_scrollx,state->m_fg_scrolly);
}
else
state->m_fg_scrollx = ((data >> 8) & 0xff) | (state->m_fg_scrollx & 0x300);
}
}
WRITE16_HANDLER( terraf_fg_scroll_msb_arm_w )
{
armedf_state *state = space->machine().driver_data<armedf_state>();
if (ACCESSING_BITS_8_15)
state->m_waiting_msb = 0;
}
WRITE16_HANDLER( armedf_fg_scrollx_w )
{
armedf_state *state = space->machine().driver_data<armedf_state>();
COMBINE_DATA(&state->m_fg_scrollx);
}
WRITE16_HANDLER( armedf_fg_scrolly_w )
{
armedf_state *state = space->machine().driver_data<armedf_state>();
COMBINE_DATA(&state->m_fg_scrolly);
}
WRITE16_HANDLER( armedf_bg_scrollx_w )
{
armedf_state *state = space->machine().driver_data<armedf_state>();
COMBINE_DATA(&state->m_bg_scrollx);
tilemap_set_scrollx(state->m_bg_tilemap, 0, state->m_bg_scrollx);
}
WRITE16_HANDLER( armedf_bg_scrolly_w )
{
armedf_state *state = space->machine().driver_data<armedf_state>();
COMBINE_DATA(&state->m_bg_scrolly);
tilemap_set_scrolly(state->m_bg_tilemap, 0, state->m_bg_scrolly);
}
/***************************************************************************
Display refresh
***************************************************************************/
/* custom code to handle color cycling effect, handled by m_spr_pal_clut */
void armedf_drawgfx(running_machine &machine, bitmap_t *dest_bmp,const rectangle *clip,const gfx_element *gfx,
UINT32 code,UINT32 color, UINT32 clut,int flipx,int flipy,int offsx,int offsy,
int transparent_color)
{
armedf_state *state = machine.driver_data<armedf_state>();
const pen_t *pal = &gfx->machine().pens[gfx->color_base + gfx->color_granularity * (color % gfx->total_colors)];
const UINT8 *source_base = gfx_element_get_data(gfx, code % gfx->total_elements);
int x_index_base, y_index, sx, sy, ex, ey;
int xinc, yinc;
xinc = flipx ? -1 : 1;
yinc = flipy ? -1 : 1;
x_index_base = flipx ? gfx->width-1 : 0;
y_index = flipy ? gfx->height-1 : 0;
/* start coordinates */
sx = offsx;
sy = offsy;
/* end coordinates */
ex = sx + gfx->width;
ey = sy + gfx->height;
if (clip)
{
if (sx < clip->min_x)
{ /* clip left */
int pixels = clip->min_x-sx;
sx += pixels;
x_index_base += xinc*pixels;
}
if (sy < clip->min_y)
{ /* clip top */
int pixels = clip->min_y-sy;
sy += pixels;
y_index += yinc*pixels;
}
/* NS 980211 - fixed incorrect clipping */
if (ex > clip->max_x+1)
{ /* clip right */
ex = clip->max_x+1;
}
if (ey > clip->max_y+1)
{ /* clip bottom */
ey = clip->max_y+1;
}
}
if (ex > sx)
{ /* skip if inner loop doesn't draw anything */
int x, y;
{
for (y = sy; y < ey; y++)
{
const UINT8 *source = source_base + y_index*gfx->line_modulo;
UINT16 *dest = BITMAP_ADDR16(dest_bmp, y, 0);
int x_index = x_index_base;
for (x = sx; x < ex; x++)
{
int c = (source[x_index] & ~0xf) | ((state->m_spr_pal_clut[clut*0x10+(source[x_index] & 0xf)]) & 0xf);
if (c != transparent_color)
dest[x] = pal[c];
x_index += xinc;
}
y_index += yinc;
}
}
}
}
static void draw_sprites( running_machine &machine, bitmap_t *bitmap, const rectangle *cliprect, int priority )
{
UINT16 *buffered_spriteram = machine.generic.buffered_spriteram.u16;
armedf_state *state = machine.driver_data<armedf_state>();
int offs;
for (offs = 0; offs < machine.generic.spriteram_size / 2; offs += 4)
{
int code = buffered_spriteram[offs + 1]; /* ??YX?TTTTTTTTTTT */
int flipx = code & 0x2000;
int flipy = code & 0x1000;
int color = (buffered_spriteram[offs + 2] >> 8) & 0x1f;
int clut = (buffered_spriteram[offs + 2]) & 0x7f;
int sx = buffered_spriteram[offs + 3];
int sy = state->m_sprite_offy + 240 - (buffered_spriteram[offs + 0] & 0x1ff);
if (flip_screen_get(machine))
{
sx = 320 - sx + 176; /* don't ask where 176 comes from, just tried it out */
sy = 240 - sy + 1; /* don't ask where 1 comes from, just tried it out */
flipx = !flipx; /* the values seem to result in pixel-correct placement */
flipy = !flipy; /* in all the games supported by this driver */
}
if (((buffered_spriteram[offs + 0] & 0x3000) >> 12) == priority)
{
armedf_drawgfx(machine,bitmap,cliprect,machine.gfx[3],
code & 0xfff,
color,clut,
flipx,flipy,
sx,sy,15);
}
}
}
SCREEN_UPDATE( armedf )
{
armedf_state *state = screen->machine().driver_data<armedf_state>();
int sprite_enable = state->m_vreg & 0x200;
tilemap_set_enable(state->m_bg_tilemap, state->m_vreg & 0x800);
tilemap_set_enable(state->m_fg_tilemap, state->m_vreg & 0x400);
tilemap_set_enable(state->m_tx_tilemap, state->m_vreg & 0x100);
switch (state->m_scroll_type)
{
case 0: /* terra force, kozure ookami */
case 2: /* legion */
case 3: /* crazy climber */
tilemap_set_scrollx(state->m_fg_tilemap, 0, (state->m_fg_scrollx & 0x3ff));
tilemap_set_scrolly(state->m_fg_tilemap, 0, (state->m_fg_scrolly & 0x3ff));
break;
case 1: /* armed formation */
tilemap_set_scrollx(state->m_fg_tilemap, 0, state->m_fg_scrollx);
tilemap_set_scrolly(state->m_fg_tilemap, 0, state->m_fg_scrolly);
break;
}
bitmap_fill(bitmap, cliprect , 0xff);
tilemap_draw(bitmap, cliprect, state->m_tx_tilemap, TILEMAP_DRAW_CATEGORY(1), 0);
tilemap_draw(bitmap, cliprect, state->m_bg_tilemap, 0, 0);
if (sprite_enable)
draw_sprites(screen->machine(), bitmap, cliprect, 2);
tilemap_draw(bitmap, cliprect, state->m_fg_tilemap, 0, 0);
if (sprite_enable)
draw_sprites(screen->machine(), bitmap, cliprect, 1);
if (sprite_enable)
draw_sprites(screen->machine(), bitmap, cliprect, 0);
tilemap_draw(bitmap, cliprect, state->m_tx_tilemap, TILEMAP_DRAW_CATEGORY(0), 0);
return 0;
}
SCREEN_EOF( armedf )
{
address_space *space = machine.device("maincpu")->memory().space(AS_PROGRAM);
buffer_spriteram16_w(space, 0, 0, 0xffff);
}