/*************************************************************************** Based on taito_h.c ***************************************************************************/ #include "emu.h" #include "video/taitoic.h" #include "includes/taito_o.h" /* These are hand-tuned values */ static const int zoomy_conv_table[] = { /* +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +a +b +c +d +e +f */ 0x00,0x01,0x01,0x02,0x02,0x03,0x04,0x05, 0x06,0x06,0x07,0x08,0x09,0x0a,0x0a,0x0b, /* 0x00 */ 0x0b,0x0c,0x0c,0x0d,0x0e,0x0e,0x0f,0x10, 0x10,0x11,0x12,0x13,0x14,0x15,0x16,0x16, 0x17,0x18,0x19,0x1a,0x1b,0x1c,0x1d,0x1e, 0x1f,0x20,0x21,0x22,0x24,0x25,0x26,0x27, 0x28,0x2a,0x2b,0x2c,0x2e,0x30,0x31,0x32, 0x34,0x36,0x37,0x38,0x3a,0x3c,0x3e,0x3f, 0x40,0x41,0x42,0x42,0x43,0x43,0x44,0x44, 0x45,0x45,0x46,0x46,0x47,0x47,0x48,0x49, /* 0x40 */ 0x4a,0x4a,0x4b,0x4b,0x4c,0x4d,0x4e,0x4f, 0x4f,0x50,0x51,0x51,0x52,0x53,0x54,0x55, 0x56,0x57,0x58,0x59,0x5a,0x5b,0x5c,0x5d, 0x5e,0x5f,0x60,0x61,0x62,0x63,0x64,0x66, 0x67,0x68,0x6a,0x6b,0x6c,0x6e,0x6f,0x71, 0x72,0x74,0x76,0x78,0x80,0x7b,0x7d,0x7f }; static void parentj_draw_sprites( running_machine &machine, bitmap_t *bitmap, const rectangle *cliprect, int priority ) { /* Y chain size is 16/32?/64/64? pixels. X chain size is always 64 pixels. */ taitoo_state *state = machine.driver_data(); static const int size[] = { 1, 2, 4, 4 }; int x0, y0, x, y, dx, dy, ex, ey, zx, zy; int ysize; int j, k; int offs; /* sprite RAM offset */ int tile_offs; /* sprite chain offset */ int zoomx, zoomy; /* zoom value */ for (offs = 0x03f8 / 2; offs >= 0; offs -= 0x008 / 2) { if (offs < 0x01b0 && priority == 0) continue; if (offs >= 0x01b0 && priority == 1) continue; x0 = tc0080vco_sprram_r(state->m_tc0080vco, offs + 1, 0xffff) & 0x3ff; y0 = tc0080vco_sprram_r(state->m_tc0080vco, offs + 0, 0xffff) & 0x3ff; zoomx = (tc0080vco_sprram_r(state->m_tc0080vco, offs + 2, 0xffff) & 0x7f00) >> 8; zoomy = (tc0080vco_sprram_r(state->m_tc0080vco, offs + 2, 0xffff) & 0x007f); tile_offs = (tc0080vco_sprram_r(state->m_tc0080vco, offs + 3, 0xffff) & 0x1fff) << 2; ysize = size[(tc0080vco_sprram_r(state->m_tc0080vco, offs, 0xffff) & 0x0c00) >> 10]; if (tile_offs) { /* Convert zoomy value to real value as zoomx */ zoomy = zoomy_conv_table[zoomy]; if (zoomx < 63) { dx = 8 + (zoomx + 2) / 8; ex = (zoomx + 2) % 8; zx = ((dx << 1) + ex) << 11; } else { dx = 16 + (zoomx - 63) / 4; ex = (zoomx - 63) % 4; zx = (dx + ex) << 12; } if (zoomy < 63) { dy = 8 + (zoomy + 2) / 8; ey = (zoomy + 2) % 8; zy = ((dy << 1) + ey) << 11; } else { dy = 16 + (zoomy - 63) / 4; ey = (zoomy - 63) % 4; zy = (dy + ey) << 12; } if (x0 >= 0x200) x0 -= 0x400; if (y0 >= 0x200) y0 -= 0x400; if (tc0080vco_flipscreen_r(state->m_tc0080vco)) { x0 = 497 - x0; y0 = 498 - y0; dx = -dx; dy = -dy; } else { x0 += 1; y0 += 2; } y = y0; for (j = 0; j < ysize; j ++) { x = x0; for (k = 0; k < 4; k ++) { if (tile_offs >= 0x1000) { int tile, color, flipx, flipy; tile = tc0080vco_cram_0_r(state->m_tc0080vco, tile_offs, 0xffff) & 0x7fff; color = tc0080vco_cram_1_r(state->m_tc0080vco, tile_offs, 0xffff) & 0x001f; flipx = tc0080vco_cram_1_r(state->m_tc0080vco, tile_offs, 0xffff) & 0x0040; flipy = tc0080vco_cram_1_r(state->m_tc0080vco, tile_offs, 0xffff) & 0x0080; if (tc0080vco_flipscreen_r(state->m_tc0080vco)) { flipx ^= 0x0040; flipy ^= 0x0080; } drawgfxzoom_transpen( bitmap, cliprect, machine.gfx[0], tile, color, flipx, flipy, x, y, zx, zy, 0 ); } tile_offs ++; x += dx; } y += dy; } } } } SCREEN_UPDATE( parentj ) { taitoo_state *state = screen->machine().driver_data(); tc0080vco_tilemap_update(state->m_tc0080vco); bitmap_fill(bitmap, cliprect, 0); tc0080vco_tilemap_draw(state->m_tc0080vco, bitmap, cliprect, 0, TILEMAP_DRAW_OPAQUE, 0); parentj_draw_sprites(screen->machine(), bitmap, cliprect, 0); parentj_draw_sprites(screen->machine(), bitmap, cliprect, 1); tc0080vco_tilemap_draw(state->m_tc0080vco, bitmap, cliprect, 1, 0, 0); tc0080vco_tilemap_draw(state->m_tc0080vco, bitmap, cliprect, 2, 0, 0); return 0; }