diff options
Diffstat (limited to 'src/mame/video/battlane.cpp')
-rw-r--r-- | src/mame/video/battlane.cpp | 233 |
1 files changed, 0 insertions, 233 deletions
diff --git a/src/mame/video/battlane.cpp b/src/mame/video/battlane.cpp deleted file mode 100644 index 7e3b010a22a..00000000000 --- a/src/mame/video/battlane.cpp +++ /dev/null @@ -1,233 +0,0 @@ -// license:BSD-3-Clause -// copyright-holders:Paul Leaman -/*************************************************************************** - - Battle Lane Vol. 5 - -***************************************************************************/ - -#include "emu.h" -#include "includes/battlane.h" - - -void battlane_state::battlane_palette_w(offs_t offset, uint8_t data) -{ - int r, g, b; - int bit0, bit1, bit2; - - // red component - bit0 = (~data >> 0) & 0x01; - bit1 = (~data >> 1) & 0x01; - bit2 = (~data >> 2) & 0x01; - r = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2; - - // green component - bit0 = (~data >> 3) & 0x01; - bit1 = (~data >> 4) & 0x01; - bit2 = (~data >> 5) & 0x01; - g = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2; - - // blue component - bit0 = (~m_video_ctrl >> 7) & 0x01; - bit1 = (~data >> 6) & 0x01; - bit2 = (~data >> 7) & 0x01; - b = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2; - - m_palette->set_pen_color(offset, rgb_t(r, g, b)); -} - -void battlane_state::battlane_scrollx_w(uint8_t data) -{ - m_bg_tilemap->set_scrollx(0, ((m_video_ctrl & 0x01) << 8) + data); -} - -void battlane_state::battlane_scrolly_w(uint8_t data) -{ - m_bg_tilemap->set_scrolly(0, ((m_cpu_control & 0x01) << 8) + data); -} - -void battlane_state::battlane_tileram_w(offs_t offset, uint8_t data) -{ - m_tileram[offset] = data; - m_bg_tilemap->mark_tile_dirty(offset & 0x3ff); -} - -void battlane_state::battlane_spriteram_w(offs_t offset, uint8_t data) -{ - m_spriteram[offset] = data; -} - -void battlane_state::battlane_bitmap_w(offs_t offset, uint8_t data) -{ - int orval = (~m_video_ctrl >> 1) & 0x07; - if (!orval) - orval = 7; - - for (int i = 0; i < 8; i++) - { - if (data & 1 << i) - { - m_screen_bitmap.pix(offset & 0xff, (offset >> 8 ) * 8 + i) |= orval; - } - else - { - m_screen_bitmap.pix(offset & 0xff, (offset >> 8) * 8 + i) &= ~orval; - } - } -} - -void battlane_state::battlane_video_ctrl_w(uint8_t data) -{ - /* - Video control register - - 0x80 = low bit of blue component (taken when writing to palette) - 0x0e = Bitmap plane (bank?) select (0-7) - 0x01 = Scroll MSB - */ - - m_video_ctrl = data; -} - -TILE_GET_INFO_MEMBER(battlane_state::get_tile_info_bg) -{ - int code = m_tileram[tile_index]; - int attr = m_tileram[tile_index + 0x400]; - int gfxn = (attr & 0x01) + 1; - int color = (attr >> 1) & 0x03; - - tileinfo.set(gfxn, code, color, 0); -} - -TILEMAP_MAPPER_MEMBER(battlane_state::battlane_tilemap_scan_rows_2x2) -{ - /* - Tilemap Memory Organization - - 0 15 16 31 - +-----------------+----------------+ - |0 15|256 |0 - | | | - | screen 0 | screen 1 | - | | | - |240 255| 511|15 - +-----------------+----------------+ - |512 |768 |16 - | | | - | screen 2 | screen 3 | - | | | - | 767| 1023|31 - +-----------------+----------------- - - */ - - return (row & 0xf) * 16 + (col & 0xf) + (row & 0x10) * 32 + (col & 0x10) * 16; -} - - -/*************************************************************************** - - Start the video hardware emulation. - -***************************************************************************/ - -void battlane_state::video_start() -{ - m_bg_tilemap = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(*this, FUNC(battlane_state::get_tile_info_bg)), tilemap_mapper_delegate(*this, FUNC(battlane_state::battlane_tilemap_scan_rows_2x2)), 16, 16, 32, 32); - m_screen_bitmap.allocate(32 * 8, 32 * 8); - save_item(NAME(m_screen_bitmap)); -} - -void battlane_state::draw_sprites(bitmap_ind16 &bitmap, const rectangle &cliprect) -{ - int offs, attr, code, color, sx, sy, flipx, flipy; - - for (offs = 0; offs < 0x100; offs += 4) - { - /* - 0x80 = Bank 2 - 0x40 = - 0x20 = Bank 1 - 0x10 = Y Double - 0x08 = Color - 0x04 = X Flip - 0x02 = Y Flip - 0x01 = Sprite Enable - */ - - attr = m_spriteram[offs + 1]; - code = m_spriteram[offs + 3]; - - code += 256 * ((attr >> 6) & 0x02); - code += 256 * ((attr >> 5) & 0x01); - - if (attr & 0x01) - { - color = BIT(attr, 3); - - sx = m_spriteram[offs + 2]; - sy = m_spriteram[offs]; - - flipx = BIT(attr, 2); - flipy = BIT(attr, 1); - - if (!flip_screen()) - { - sx = 240 - sx; - sy = 240 - sy; - flipx = !flipx; - flipy = !flipy; - } - - if (attr & 0x10) // Y Double - { - for (int i = 0; i < 2; i++) - m_gfxdecode->gfx(0)->transpen(bitmap,cliprect, - code + i, - color, - flipx, flipy, - sx, sy - (16 * (i ^ flipy)), 0); - } - else - { - m_gfxdecode->gfx(0)->transpen(bitmap,cliprect, - code, - color, - flipx, flipy, - sx, sy, 0); - } - } - } -} - -void battlane_state::draw_fg_bitmap(bitmap_ind16 &bitmap, const rectangle &cliprect) -{ - for (int y = 0; y < 32 * 8; y++) - { - for (int x = 0; x < 32 * 8; x++) - { - int const data = m_screen_bitmap.pix(y, x); - - if (data) - { - int px = x, py = y; - if (flip_screen()) - { - px = 255 - px; - py = 255 - py; - } - - if (cliprect.contains(px, py)) - bitmap.pix(y, x) = data; - } - } - } -} - -uint32_t battlane_state::screen_update_battlane(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) -{ - m_bg_tilemap->draw(screen, bitmap, cliprect); - draw_sprites(bitmap, cliprect); - draw_fg_bitmap(bitmap, cliprect); - return 0; -} |