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dataeast/exprraid.cpp: added note about undumped revision, consolidated driver in single file
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Ivan Vangelista
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// license:BSD-3-Clause
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// copyright-holders:Ernesto Corvi
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/*************************************************************************
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Express Raider
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*************************************************************************/
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#include "machine/gen_latch.h"
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#include "emupal.h"
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#include "tilemap.h"
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class exprraid_state : public driver_device
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{
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public:
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exprraid_state(const machine_config &mconfig, device_type type, const char *tag) :
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driver_device(mconfig, type, tag),
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m_maincpu(*this, "maincpu"),
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m_slave(*this, "slave"),
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m_gfxdecode(*this, "gfxdecode"),
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m_palette(*this, "palette"),
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m_soundlatch(*this, "soundlatch"),
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m_main_ram(*this, "main_ram"),
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m_spriteram(*this, "spriteram"),
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m_videoram(*this, "videoram"),
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m_colorram(*this, "colorram")
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{ }
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void exprraid(machine_config &config);
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void exprboot(machine_config &config);
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void init_exprraid();
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void init_wexpressb();
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void init_wexpressb2();
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void init_wexpressb3();
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DECLARE_INPUT_CHANGED_MEMBER(coin_inserted_deco16);
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DECLARE_INPUT_CHANGED_MEMBER(coin_inserted_nmi);
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private:
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/* devices */
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required_device<cpu_device> m_maincpu;
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required_device<cpu_device> m_slave;
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required_device<gfxdecode_device> m_gfxdecode;
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required_device<palette_device> m_palette;
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required_device<generic_latch_8_device> m_soundlatch;
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/* memory pointers */
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required_shared_ptr<uint8_t> m_main_ram;
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required_shared_ptr<uint8_t> m_spriteram;
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required_shared_ptr<uint8_t> m_videoram;
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required_shared_ptr<uint8_t> m_colorram;
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/* protection */
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uint8_t m_prot_value = 0U;
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/* video-related */
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tilemap_t *m_bg_tilemap = nullptr;
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tilemap_t *m_fg_tilemap = nullptr;
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int m_bg_index[4]{};
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virtual void machine_start() override;
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virtual void machine_reset() override;
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virtual void video_start() override;
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void exprraid_int_clear_w(uint8_t data);
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uint8_t exprraid_prot_status_r();
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uint8_t exprraid_prot_data_r();
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void exprraid_prot_data_w(uint8_t data);
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uint8_t vblank_r();
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void exprraid_videoram_w(offs_t offset, uint8_t data);
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void exprraid_colorram_w(offs_t offset, uint8_t data);
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void exprraid_flipscreen_w(uint8_t data);
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void exprraid_bgselect_w(offs_t offset, uint8_t data);
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void exprraid_scrollx_w(offs_t offset, uint8_t data);
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void exprraid_scrolly_w(offs_t offset, uint8_t data);
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TILE_GET_INFO_MEMBER(get_bg_tile_info);
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TILE_GET_INFO_MEMBER(get_fg_tile_info);
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uint32_t screen_update_exprraid(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
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void draw_sprites( bitmap_ind16 &bitmap, const rectangle &cliprect );
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void exprraid_gfx_expand();
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void master_io_map(address_map &map);
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void master_map(address_map &map);
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void slave_map(address_map &map);
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};
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@ -1,131 +0,0 @@
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// license:BSD-3-Clause
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// copyright-holders:Ernesto Corvi
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#include "emu.h"
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#include "exprraid.h"
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void exprraid_state::exprraid_videoram_w(offs_t offset, uint8_t data)
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{
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m_videoram[offset] = data;
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m_fg_tilemap->mark_tile_dirty(offset);
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}
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void exprraid_state::exprraid_colorram_w(offs_t offset, uint8_t data)
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{
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m_colorram[offset] = data;
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m_fg_tilemap->mark_tile_dirty(offset);
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}
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void exprraid_state::exprraid_flipscreen_w(uint8_t data)
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{
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flip_screen_set(data & 0x01);
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}
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void exprraid_state::exprraid_bgselect_w(offs_t offset, uint8_t data)
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{
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if (m_bg_index[offset] != data)
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{
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m_bg_index[offset] = data;
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m_bg_tilemap->mark_all_dirty();
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}
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}
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void exprraid_state::exprraid_scrollx_w(offs_t offset, uint8_t data)
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{
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m_bg_tilemap->set_scrollx(offset, data);
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}
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void exprraid_state::exprraid_scrolly_w(offs_t offset, uint8_t data)
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{
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m_bg_tilemap->set_scrolly(0, data);
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}
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TILE_GET_INFO_MEMBER(exprraid_state::get_bg_tile_info)
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{
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uint8_t *tilerom = memregion("gfx4")->base();
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int data, attr, bank, code, color, flags;
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int quadrant = 0, offs;
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int sx = tile_index % 32;
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int sy = tile_index / 32;
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if (sx >= 16) quadrant++;
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if (sy >= 16) quadrant += 2;
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offs = (sy % 16) * 16 + (sx % 16) + (m_bg_index[quadrant] & 0x3f) * 0x100;
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data = tilerom[offs];
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attr = tilerom[offs + 0x4000];
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bank = (2 * (attr & 0x03) + ((data & 0x80) >> 7)) + 2;
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code = data & 0x7f;
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color = (attr & 0x18) >> 3;
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flags = (attr & 0x04) ? TILE_FLIPX : 0;
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tileinfo.category = ((attr & 0x80) ? 1 : 0);
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tileinfo.set(bank, code, color, flags);
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}
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TILE_GET_INFO_MEMBER(exprraid_state::get_fg_tile_info)
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{
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int attr = m_colorram[tile_index];
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int code = m_videoram[tile_index] + ((attr & 0x07) << 8);
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int color = (attr & 0x10) >> 4;
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tileinfo.set(0, code, color, 0);
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}
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void exprraid_state::video_start()
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{
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m_bg_tilemap = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(*this, FUNC(exprraid_state::get_bg_tile_info)), TILEMAP_SCAN_ROWS, 16, 16, 32, 32);
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m_fg_tilemap = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(*this, FUNC(exprraid_state::get_fg_tile_info)), TILEMAP_SCAN_ROWS, 8, 8, 32, 32);
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m_bg_tilemap->set_scroll_rows(2);
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m_fg_tilemap->set_transparent_pen(0);
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}
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void exprraid_state::draw_sprites( bitmap_ind16 &bitmap, const rectangle &cliprect )
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{
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for (int offs = 0; offs < m_spriteram.bytes(); offs += 4)
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{
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int attr = m_spriteram[offs + 1];
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int code = m_spriteram[offs + 3] + ((attr & 0xe0) << 3);
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int color = (attr & 0x03) + ((attr & 0x08) >> 1);
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int flipx = (attr & 0x04);
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int flipy = 0;
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int sx = ((248 - m_spriteram[offs + 2]) & 0xff) - 8;
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int sy = m_spriteram[offs];
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if (flip_screen())
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{
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sx = 240 - sx;
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sy = 240 - sy;
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flipx = !flipx;
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flipy = !flipy;
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}
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m_gfxdecode->gfx(1)->transpen(bitmap,cliprect,
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code, color,
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flipx, flipy,
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sx, sy, 0);
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// double height
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if (attr & 0x10)
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{
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m_gfxdecode->gfx(1)->transpen(bitmap,cliprect,
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code + 1, color,
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flipx, flipy,
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sx, sy + (flip_screen() ? -16 : 16), 0);
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}
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}
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}
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uint32_t exprraid_state::screen_update_exprraid(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
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{
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m_bg_tilemap->draw(screen, bitmap, cliprect, 0, 0);
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draw_sprites(bitmap, cliprect);
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m_bg_tilemap->draw(screen, bitmap, cliprect, 1, 0);
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m_fg_tilemap->draw(screen, bitmap, cliprect, 0, 0);
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return 0;
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}
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