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author Miodrag Milanovic <mmicko@gmail.com>2015-11-08 12:56:12 +0100
committer Miodrag Milanovic <mmicko@gmail.com>2015-11-08 12:56:12 +0100
commit7c19aac60e12d6f5ea301bdb34d7826a01e0b06f (patch)
treef310d86aa2c6bfc19d115307dedde4eb0cd52dad /src/mame/video/exprraid.cpp
parenta57b46ae933badd7441ce1644711dbb851e2b504 (diff)
Rename *.c -> *.cpp in our source (nw)
Diffstat (limited to 'src/mame/video/exprraid.cpp')
-rw-r--r--src/mame/video/exprraid.cpp138
1 files changed, 138 insertions, 0 deletions
diff --git a/src/mame/video/exprraid.cpp b/src/mame/video/exprraid.cpp
new file mode 100644
index 00000000000..2ff324fe57f
--- /dev/null
+++ b/src/mame/video/exprraid.cpp
@@ -0,0 +1,138 @@
+// license:BSD-3-Clause
+// copyright-holders:Ernesto Corvi
+#include "emu.h"
+#include "includes/exprraid.h"
+
+
+WRITE8_MEMBER(exprraid_state::exprraid_videoram_w)
+{
+ m_videoram[offset] = data;
+ m_fg_tilemap->mark_tile_dirty(offset);
+}
+
+WRITE8_MEMBER(exprraid_state::exprraid_colorram_w)
+{
+ m_colorram[offset] = data;
+ m_fg_tilemap->mark_tile_dirty(offset);
+}
+
+WRITE8_MEMBER(exprraid_state::exprraid_flipscreen_w)
+{
+ if (flip_screen() != (data & 0x01))
+ {
+ flip_screen_set(data & 0x01);
+ machine().tilemap().mark_all_dirty();
+ }
+}
+
+WRITE8_MEMBER(exprraid_state::exprraid_bgselect_w)
+{
+ if (m_bg_index[offset] != data)
+ {
+ m_bg_index[offset] = data;
+ m_bg_tilemap->mark_all_dirty();
+ }
+}
+
+WRITE8_MEMBER(exprraid_state::exprraid_scrollx_w)
+{
+ m_bg_tilemap->set_scrollx(offset, data);
+}
+
+WRITE8_MEMBER(exprraid_state::exprraid_scrolly_w)
+{
+ m_bg_tilemap->set_scrolly(0, data);
+}
+
+TILE_GET_INFO_MEMBER(exprraid_state::get_bg_tile_info)
+{
+ UINT8 *tilerom = memregion("gfx4")->base();
+
+ int data, attr, bank, code, color, flags;
+ int quadrant = 0, offs;
+
+ int sx = tile_index % 32;
+ int sy = tile_index / 32;
+
+ if (sx >= 16) quadrant++;
+ if (sy >= 16) quadrant += 2;
+
+ offs = (sy % 16) * 16 + (sx % 16) + (m_bg_index[quadrant] & 0x3f) * 0x100;
+
+ data = tilerom[offs];
+ attr = tilerom[offs + 0x4000];
+ bank = (2 * (attr & 0x03) + ((data & 0x80) >> 7)) + 2;
+ code = data & 0x7f;
+ color = (attr & 0x18) >> 3;
+ flags = (attr & 0x04) ? TILE_FLIPX : 0;
+
+ tileinfo.category = ((attr & 0x80) ? 1 : 0);
+
+ SET_TILE_INFO_MEMBER(bank, code, color, flags);
+}
+
+TILE_GET_INFO_MEMBER(exprraid_state::get_fg_tile_info)
+{
+ int attr = m_colorram[tile_index];
+ int code = m_videoram[tile_index] + ((attr & 0x07) << 8);
+ int color = (attr & 0x10) >> 4;
+
+ SET_TILE_INFO_MEMBER(0, code, color, 0);
+}
+
+void exprraid_state::video_start()
+{
+ m_bg_tilemap = &machine().tilemap().create(m_gfxdecode, tilemap_get_info_delegate(FUNC(exprraid_state::get_bg_tile_info),this), TILEMAP_SCAN_ROWS, 16, 16, 32, 32);
+ m_fg_tilemap = &machine().tilemap().create(m_gfxdecode, tilemap_get_info_delegate(FUNC(exprraid_state::get_fg_tile_info),this), TILEMAP_SCAN_ROWS, 8, 8, 32, 32);
+
+ m_bg_tilemap->set_scroll_rows(2);
+ m_fg_tilemap->set_transparent_pen(0);
+}
+
+void exprraid_state::draw_sprites( bitmap_ind16 &bitmap, const rectangle &cliprect )
+{
+ int offs;
+
+ for (offs = 0; offs < m_spriteram.bytes(); offs += 4)
+ {
+ int attr = m_spriteram[offs + 1];
+ int code = m_spriteram[offs + 3] + ((attr & 0xe0) << 3);
+ int color = (attr & 0x03) + ((attr & 0x08) >> 1);
+ int flipx = (attr & 0x04);
+ int flipy = 0;
+ int sx = ((248 - m_spriteram[offs + 2]) & 0xff) - 8;
+ int sy = m_spriteram[offs];
+
+ if (flip_screen())
+ {
+ sx = 240 - sx;
+ sy = 240 - sy;
+ flipx = !flipx;
+ flipy = !flipy;
+ }
+
+ m_gfxdecode->gfx(1)->transpen(bitmap,cliprect,
+ code, color,
+ flipx, flipy,
+ sx, sy, 0);
+
+ /* double height */
+
+ if (attr & 0x10)
+ {
+ m_gfxdecode->gfx(1)->transpen(bitmap,cliprect,
+ code + 1, color,
+ flipx, flipy,
+ sx, sy + (flip_screen() ? -16 : 16), 0);
+ }
+ }
+}
+
+UINT32 exprraid_state::screen_update_exprraid(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
+{
+ m_bg_tilemap->draw(screen, bitmap, cliprect, 0, 0);
+ draw_sprites(bitmap, cliprect);
+ m_bg_tilemap->draw(screen, bitmap, cliprect, 1, 0);
+ m_fg_tilemap->draw(screen, bitmap, cliprect, 0, 0);
+ return 0;
+}