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-rw-r--r--src/mame/video/batman.c311
1 files changed, 311 insertions, 0 deletions
diff --git a/src/mame/video/batman.c b/src/mame/video/batman.c
new file mode 100644
index 00000000000..0ad8499ccff
--- /dev/null
+++ b/src/mame/video/batman.c
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+/***************************************************************************
+
+ Atari Batman hardware
+
+****************************************************************************/
+
+#include "driver.h"
+#include "machine/atarigen.h"
+#include "batman.h"
+#include "thunderj.h"
+
+
+
+/*************************************
+ *
+ * Globals
+ *
+ *************************************/
+
+UINT8 batman_alpha_tile_bank;
+
+
+
+/*************************************
+ *
+ * Tilemap callbacks
+ *
+ *************************************/
+
+static TILE_GET_INFO( get_alpha_tile_info )
+{
+ UINT16 data = atarigen_alpha[tile_index];
+ int code = ((data & 0x400) ? (batman_alpha_tile_bank * 0x400) : 0) + (data & 0x3ff);
+ int color = (data >> 11) & 0x0f;
+ int opaque = data & 0x8000;
+ SET_TILE_INFO(2, code, color, opaque ? TILE_FORCE_LAYER0 : 0);
+}
+
+
+static TILE_GET_INFO( get_playfield_tile_info )
+{
+ UINT16 data1 = atarigen_playfield[tile_index];
+ UINT16 data2 = atarigen_playfield_upper[tile_index] & 0xff;
+ int code = data1 & 0x7fff;
+ int color = 0x10 + (data2 & 0x0f);
+ SET_TILE_INFO(0, code, color, (data1 >> 15) & 1);
+ tileinfo->category = (data2 >> 4) & 3;
+}
+
+
+static TILE_GET_INFO( get_playfield2_tile_info )
+{
+ UINT16 data1 = atarigen_playfield2[tile_index];
+ UINT16 data2 = atarigen_playfield_upper[tile_index] >> 8;
+ int code = data1 & 0x7fff;
+ int color = data2 & 0x0f;
+ SET_TILE_INFO(0, code, color, (data1 >> 15) & 1);
+ tileinfo->category = (data2 >> 4) & 3;
+}
+
+
+
+/*************************************
+ *
+ * Video system start
+ *
+ *************************************/
+
+VIDEO_START( batman )
+{
+ static const struct atarimo_desc modesc =
+ {
+ 1, /* index to which gfx system */
+ 1, /* number of motion object banks */
+ 1, /* are the entries linked? */
+ 0, /* are the entries split? */
+ 1, /* render in reverse order? */
+ 0, /* render in swapped X/Y order? */
+ 0, /* does the neighbor bit affect the next object? */
+ 8, /* 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 */
+
+ {{ 0x03ff,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 */
+ {{ 0,0,0x0070,0 }}, /* 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" */
+ NULL /* callback routine for special entries */
+ };
+
+ /* initialize the playfield */
+ atarigen_playfield_tilemap = tilemap_create(get_playfield_tile_info, tilemap_scan_cols, TILEMAP_TYPE_PEN, 8,8, 64,64);
+
+ /* initialize the second playfield */
+ atarigen_playfield2_tilemap = tilemap_create(get_playfield2_tile_info, tilemap_scan_cols, TILEMAP_TYPE_PEN, 8,8, 64,64);
+ tilemap_set_transparent_pen(atarigen_playfield2_tilemap, 0);
+
+ /* initialize the motion objects */
+ atarimo_init(machine, 0, &modesc);
+
+ /* initialize the alphanumerics */
+ atarigen_alpha_tilemap = tilemap_create(get_alpha_tile_info, tilemap_scan_rows, TILEMAP_TYPE_PEN, 8,8, 64,32);
+ tilemap_set_transparent_pen(atarigen_alpha_tilemap, 0);
+}
+
+
+
+/*************************************
+ *
+ * Periodic scanline updater
+ *
+ *************************************/
+
+void batman_scanline_update(running_machine *machine, int scrnum, int scanline)
+{
+ /* update the scanline parameters */
+ if (scanline <= machine->screen[scrnum].visarea.max_y && atarivc_state.rowscroll_enable)
+ {
+ UINT16 *base = &atarigen_alpha[scanline / 8 * 64 + 48];
+ int scan, i;
+
+ for (scan = 0; scan < 8; scan++, scanline++)
+ for (i = 0; i < 2; i++)
+ {
+ int data = *base++;
+ switch (data & 15)
+ {
+ case 9:
+ video_screen_update_partial(0, scanline - 1);
+ atarivc_state.mo_xscroll = (data >> 7) & 0x1ff;
+ atarimo_set_xscroll(0, atarivc_state.mo_xscroll);
+ break;
+
+ case 10:
+ video_screen_update_partial(0, scanline - 1);
+ atarivc_state.pf1_xscroll_raw = (data >> 7) & 0x1ff;
+ atarivc_update_pf_xscrolls();
+ tilemap_set_scrollx(atarigen_playfield_tilemap, 0, atarivc_state.pf0_xscroll);
+ tilemap_set_scrollx(atarigen_playfield2_tilemap, 0, atarivc_state.pf1_xscroll);
+ break;
+
+ case 11:
+ video_screen_update_partial(0, scanline - 1);
+ atarivc_state.pf0_xscroll_raw = (data >> 7) & 0x1ff;
+ atarivc_update_pf_xscrolls();
+ tilemap_set_scrollx(atarigen_playfield_tilemap, 0, atarivc_state.pf0_xscroll);
+ break;
+
+ case 13:
+ video_screen_update_partial(0, scanline - 1);
+ atarivc_state.mo_yscroll = (data >> 7) & 0x1ff;
+ atarimo_set_yscroll(0, atarivc_state.mo_yscroll);
+ break;
+
+ case 14:
+ video_screen_update_partial(0, scanline - 1);
+ atarivc_state.pf1_yscroll = (data >> 7) & 0x1ff;
+ tilemap_set_scrolly(atarigen_playfield2_tilemap, 0, atarivc_state.pf1_yscroll);
+ break;
+
+ case 15:
+ video_screen_update_partial(0, scanline - 1);
+ atarivc_state.pf0_yscroll = (data >> 7) & 0x1ff;
+ tilemap_set_scrolly(atarigen_playfield_tilemap, 0, atarivc_state.pf0_yscroll);
+ break;
+ }
+ }
+ }
+}
+
+
+
+/*************************************
+ *
+ * Main refresh
+ *
+ *************************************/
+
+VIDEO_UPDATE( batman )
+{
+ struct atarimo_rect_list rectlist;
+ mame_bitmap *mobitmap;
+ int x, y, r;
+
+ /* draw the playfield */
+ fillbitmap(priority_bitmap, 0, cliprect);
+ tilemap_draw(bitmap, cliprect, atarigen_playfield_tilemap, 0, 0x00);
+ tilemap_draw(bitmap, cliprect, atarigen_playfield_tilemap, 1, 0x01);
+ tilemap_draw(bitmap, cliprect, atarigen_playfield_tilemap, 2, 0x02);
+ tilemap_draw(bitmap, cliprect, atarigen_playfield_tilemap, 3, 0x03);
+ tilemap_draw(bitmap, cliprect, atarigen_playfield2_tilemap, 0, 0x80);
+ tilemap_draw(bitmap, cliprect, atarigen_playfield2_tilemap, 1, 0x84);
+ tilemap_draw(bitmap, cliprect, atarigen_playfield2_tilemap, 2, 0x88);
+ tilemap_draw(bitmap, cliprect, atarigen_playfield2_tilemap, 3, 0x8c);
+
+ /* draw and merge the MO */
+ 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;
+ UINT8 *pri = (UINT8 *)priority_bitmap->base + priority_bitmap->rowpixels * y;
+ for (x = rectlist.rect->min_x; x <= rectlist.rect->max_x; x++)
+ if (mo[x])
+ {
+ /* verified on real hardware:
+
+ for all MO colors, MO priority 0:
+ obscured by low fg playfield pens priority 1-3
+ obscured by high fg playfield pens priority 3 only
+ obscured by bg playfield priority 3 only
+
+ for all MO colors, MO priority 1:
+ obscured by low fg playfield pens priority 2-3
+ obscured by high fg playfield pens priority 3 only
+ obscured by bg playfield priority 3 only
+
+ for all MO colors, MO priority 2-3:
+ obscured by low fg playfield pens priority 3 only
+ obscured by high fg playfield pens priority 3 only
+ obscured by bg playfield priority 3 only
+ */
+ int mopriority = mo[x] >> ATARIMO_PRIORITY_SHIFT;
+
+ /* upper bit of MO priority signals special rendering and doesn't draw anything */
+ if (mopriority & 4)
+ continue;
+
+ /* foreground playfield case */
+ if (pri[x] & 0x80)
+ {
+ int pfpriority = (pri[x] >> 2) & 3;
+
+ /* playfield priority 3 always wins */
+ if (pfpriority == 3)
+ ;
+
+ /* priority is consistent for upper pens in playfield */
+ else if (pf[x] & 0x08)
+ pf[x] = mo[x] & ATARIMO_DATA_MASK;
+
+ /* otherwise, we need to compare */
+ else if (mopriority >= pfpriority)
+ pf[x] = mo[x] & ATARIMO_DATA_MASK;
+ }
+
+ /* background playfield case */
+ else
+ {
+ int pfpriority = pri[x] & 3;
+
+ /* playfield priority 3 always wins */
+ if (pfpriority == 3)
+ ;
+
+ /* otherwise, MOs get shown */
+ else
+ pf[x] = mo[x] & ATARIMO_DATA_MASK;
+ }
+
+ /* don't erase yet -- we need to make another pass later */
+ }
+ }
+
+ /* add the alpha on top */
+ tilemap_draw(bitmap, cliprect, atarigen_alpha_tilemap, 0, 0);
+
+ /* now go back and process the upper bit of MO priority */
+ rectlist.rect -= rectlist.numrects;
+ 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])
+ {
+ int mopriority = mo[x] >> ATARIMO_PRIORITY_SHIFT;
+
+ /* upper bit of MO priority might mean palette kludges */
+ if (mopriority & 4)
+ {
+ /* if bit 2 is set, start setting high palette bits */
+ if (mo[x] & 2)
+ thunderj_mark_high_palette(bitmap, pf, mo, x, y);
+ }
+
+ /* erase behind ourselves */
+ mo[x] = 0;
+ }
+ }
+ return 0;
+}