diff options
Diffstat (limited to 'src/mame/video/arcadecl.c')
-rw-r--r-- | src/mame/video/arcadecl.c | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/src/mame/video/arcadecl.c b/src/mame/video/arcadecl.c new file mode 100644 index 00000000000..2ddd17f0842 --- /dev/null +++ b/src/mame/video/arcadecl.c @@ -0,0 +1,123 @@ +/*************************************************************************** + + Atari Arcade Classics hardware (prototypes) + + Note: this video hardware has some similarities to Shuuz & company + The sprite offset registers are stored to 3EFF80 + +****************************************************************************/ + + +#include "driver.h" +#include "machine/atarigen.h" +#include "arcadecl.h" + + + +/************************************* + * + * Statics + * + *************************************/ + +static UINT8 has_mo; + + + +/************************************* + * + * Video system start + * + *************************************/ + +VIDEO_START( arcadecl ) +{ + static const struct atarimo_desc modesc = + { + 0, /* 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? */ + 0, /* render in swapped X/Y order? */ + 0, /* does the neighbor bit affect the next object? */ + 0, /* 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 */ + + {{ 0x00ff,0,0,0 }}, /* mask for the link */ + {{ 0 }}, /* mask for the graphics bank */ + {{ 0,0x7fff,0,0 }}, /* mask for the code index */ + {{ 0 }}, /* mask for the upper code index */ + {{ 0,0,0x000f,0 }}, /* mask for the color */ + {{ 0,0,0xff80,0 }}, /* mask for the X position */ + {{ 0,0,0,0xff80 }}, /* mask for the Y position */ + {{ 0,0,0,0x0070 }}, /* mask for the width, in tiles*/ + {{ 0,0,0,0x0007 }}, /* mask for the height, in tiles */ + {{ 0,0x8000,0,0 }}, /* mask for the horizontal flip */ + {{ 0 }}, /* mask for the vertical flip */ + {{ 0 }}, /* mask for the priority */ + {{ 0 }}, /* mask for the neighbor */ + {{ 0 }}, /* mask for absolute coordinates */ + + {{ 0 }}, /* mask for the special value */ + 0, /* resulting value to indicate "special" */ + 0, /* callback routine for special entries */ + }; + + /* initialize the playfield */ + rampart_bitmap_init(machine, 43*8, 30*8); + + /* initialize the motion objects */ + atarimo_init(machine, 0, &modesc); + + /* set the intial scroll offset */ + atarimo_set_xscroll(0, -4); + atarimo_set_yscroll(0, 0x110); + has_mo = (machine->gfx[0]->total_elements > 10); +} + + + +/************************************* + * + * Main refresh + * + *************************************/ + +VIDEO_UPDATE( arcadecl ) +{ + /* draw the playfield */ + rampart_bitmap_render(machine, bitmap, cliprect); + + /* draw and merge the MO */ + if (has_mo) + { + struct atarimo_rect_list rectlist; + mame_bitmap *mobitmap; + int x, y, r; + + mobitmap = atarimo_render(machine, 0, cliprect, &rectlist); + for (r = 0; r < rectlist.numrects; r++, rectlist.rect++) + for (y = rectlist.rect->min_y; y <= rectlist.rect->max_y; y++) + { + UINT16 *mo = (UINT16 *)mobitmap->base + mobitmap->rowpixels * y; + UINT16 *pf = (UINT16 *)bitmap->base + bitmap->rowpixels * y; + for (x = rectlist.rect->min_x; x <= rectlist.rect->max_x; x++) + if (mo[x]) + { + /* not yet verified + */ + pf[x] = mo[x]; + + /* erase behind ourselves */ + mo[x] = 0; + } + } + } + return 0; +} |