// license:BSD-3-Clause // copyright-holders:Mike Coates /*************************************************************************** circus.c video Functions to emulate the video hardware of the machine. ***************************************************************************/ #include "emu.h" #include "sound/samples.h" #include "includes/circus.h" WRITE8_MEMBER(circus_state::circus_videoram_w) { m_videoram[offset] = data; m_bg_tilemap->mark_tile_dirty(offset); } WRITE8_MEMBER(circus_state::circus_clown_x_w) { m_clown_x = 240 - data; } WRITE8_MEMBER(circus_state::circus_clown_y_w) { m_clown_y = 240 - data; } TILE_GET_INFO_MEMBER(circus_state::get_bg_tile_info) { int code = m_videoram[tile_index]; SET_TILE_INFO_MEMBER(0, code, 0, 0); } void circus_state::video_start() { m_bg_tilemap = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(FUNC(circus_state::get_bg_tile_info),this), TILEMAP_SCAN_ROWS, 8, 8, 32, 32); } void circus_state::draw_line( bitmap_ind16 &bitmap, const rectangle &cliprect, int x1, int y1, int x2, int y2, int dotted ) { /* Draws horizontal and Vertical lines only! */ int count, skip; /* Draw the Line */ if (dotted > 0) skip = 2; else skip = 1; if (x1 == x2) for (count = y2; count >= y1; count -= skip) bitmap.pix16(count, x1) = 1; else for (count = x2; count >= x1; count -= skip) bitmap.pix16(y1, count) = 1; } void circus_state::draw_sprite_collision( bitmap_ind16 &bitmap, const rectangle &cliprect ) { gfx_element *sprite_gfx = m_gfxdecode->gfx(1); const uint8_t *sprite_data = sprite_gfx->get_data(m_clown_z); int sx, sy, dx, dy; int pixel, collision = 0; // draw sprite and check collision on a pixel basis for (sy = 0; sy < 16; sy++) { dy = m_clown_x + sy-1; if (dy>=0 && dy=0 && dxrowbytes() + sx]; if (pixel) { collision |= bitmap.pix16(dy, dx); bitmap.pix16(dy, dx) = m_palette->pen(pixel); } } } } } if (collision) m_maincpu->set_input_line(0, ASSERT_LINE); } void circus_state::circus_draw_fg( bitmap_ind16 &bitmap, const rectangle &cliprect ) { /* The sync generator hardware is used to */ /* draw the border and diving boards */ draw_line(bitmap, cliprect, 0, 18, 255, 18, 0); draw_line(bitmap, cliprect, 0, 249, 255, 249, 1); draw_line(bitmap, cliprect, 0, 18, 0, 248, 0); draw_line(bitmap, cliprect, 247, 18, 247, 248, 0); draw_line(bitmap, cliprect, 0, 136, 17, 136, 0); draw_line(bitmap, cliprect, 231, 136, 248, 136, 0); draw_line(bitmap, cliprect, 0, 192, 17, 192, 0); draw_line(bitmap, cliprect, 231, 192, 248, 192, 0); } uint32_t circus_state::screen_update_circus(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { m_bg_tilemap->draw(screen, bitmap, cliprect, 0, 0); circus_draw_fg(bitmap, cliprect); draw_sprite_collision(bitmap, cliprect); return 0; } void circus_state::robotbwl_draw_box( bitmap_ind16 &bitmap, const rectangle &cliprect, int x, int y ) { /* Box */ int ex = x + 24; int ey = y + 26; draw_line(bitmap, cliprect, x, y, ex, y, 0); /* Top */ draw_line(bitmap, cliprect, x, ey, ex, ey, 0); /* Bottom */ draw_line(bitmap, cliprect, x, y, x, ey, 0); /* Left */ draw_line(bitmap, cliprect, ex, y, ex, ey, 0); /* Right */ /* Score Grid */ ey = y + 10; draw_line(bitmap, cliprect, x + 8, ey, ex, ey, 0); /* Horizontal Divide Line */ draw_line(bitmap, cliprect, x + 8, y, x + 8, ey, 0); draw_line(bitmap, cliprect, x + 16, y, x + 16, ey, 0); } void circus_state::robotbwl_draw_scoreboard( bitmap_ind16 &bitmap, const rectangle &cliprect ) { int offs; /* The sync generator hardware is used to */ /* draw the bowling alley & scorecards */ for (offs = 15; offs <= 63; offs += 24) { robotbwl_draw_box(bitmap, cliprect, offs, 31); robotbwl_draw_box(bitmap, cliprect, offs, 63); robotbwl_draw_box(bitmap, cliprect, offs, 95); robotbwl_draw_box(bitmap, cliprect, offs + 152, 31); robotbwl_draw_box(bitmap, cliprect, offs + 152, 63); robotbwl_draw_box(bitmap, cliprect, offs + 152, 95); } robotbwl_draw_box(bitmap, cliprect, 39, 127); /* 10th Frame */ draw_line(bitmap, cliprect, 39, 137, 47, 137, 0); /* Extra digit box */ robotbwl_draw_box(bitmap, cliprect, 39 + 152, 127); draw_line(bitmap, cliprect, 39 + 152, 137, 47 + 152, 137, 0); } void circus_state::robotbwl_draw_bowling_alley( bitmap_ind16 &bitmap, const rectangle &cliprect ) { draw_line(bitmap, cliprect, 103, 17, 103, 205, 0); draw_line(bitmap, cliprect, 111, 17, 111, 203, 1); draw_line(bitmap, cliprect, 152, 17, 152, 205, 0); draw_line(bitmap, cliprect, 144, 17, 144, 203, 1); } void circus_state::robotbwl_draw_ball( bitmap_ind16 &bitmap, const rectangle &cliprect ) { m_gfxdecode->gfx(1)->transpen(bitmap,/* Y is horizontal position */ cliprect, m_clown_z, 0, 0,0, m_clown_y + 8, m_clown_x + 8, 0); } uint32_t circus_state::screen_update_robotbwl(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { m_bg_tilemap->draw(screen, bitmap, cliprect, 0, 0); robotbwl_draw_scoreboard(bitmap, cliprect); robotbwl_draw_bowling_alley(bitmap, cliprect); robotbwl_draw_ball(bitmap, cliprect); return 0; } void circus_state::crash_draw_car( bitmap_ind16 &bitmap, const rectangle &cliprect ) { m_gfxdecode->gfx(1)->transpen(bitmap,/* Y is horizontal position */ cliprect, m_clown_z, 0, 0,0, m_clown_y, m_clown_x - 1, 0); } uint32_t circus_state::screen_update_crash(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { m_bg_tilemap->draw(screen, bitmap, cliprect, 0, 0); crash_draw_car(bitmap, cliprect); return 0; } uint32_t circus_state::screen_update_ripcord(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { m_bg_tilemap->draw(screen, bitmap, cliprect, 0, 0); draw_sprite_collision(bitmap, cliprect); return 0; }