/*************************************************************************** circus.c video Functions to emulate the video hardware of the machine. ***************************************************************************/ #include "emu.h" #include "sound/samples.h" #include "includes/circus.h" WRITE8_HANDLER( circus_videoram_w ) { circus_state *state = space->machine().driver_data(); state->m_videoram[offset] = data; tilemap_mark_tile_dirty(state->m_bg_tilemap, offset); } WRITE8_HANDLER( circus_clown_x_w ) { circus_state *state = space->machine().driver_data(); state->m_clown_x = 240 - data; } WRITE8_HANDLER( circus_clown_y_w ) { circus_state *state = space->machine().driver_data(); state->m_clown_y = 240 - data; } static TILE_GET_INFO( get_bg_tile_info ) { circus_state *state = machine.driver_data(); int code = state->m_videoram[tile_index]; SET_TILE_INFO(0, code, 0, 0); } VIDEO_START( circus ) { circus_state *state = machine.driver_data(); state->m_bg_tilemap = tilemap_create(machine, get_bg_tile_info, tilemap_scan_rows, 8, 8, 32, 32); } static void draw_line( bitmap_t *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_ADDR16(bitmap, count, x1) = 1; else for (count = x2; count >= x1; count -= skip) *BITMAP_ADDR16(bitmap, y1, count) = 1; } static void draw_sprite_collision( running_machine &machine, bitmap_t *bitmap, const rectangle *cliprect ) { circus_state *state = machine.driver_data(); const gfx_element *sprite_gfx = machine.gfx[1]; const UINT8 *sprite_data = gfx_element_get_data(sprite_gfx, state->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 = state->m_clown_x + sy-1; if (dy>=0 && dyheight) { for (sx = 0; sx < 16; sx++) { dx = state->m_clown_y + sx; if (dx>=0 && dxwidth) { pixel = sprite_data[sy * sprite_gfx->line_modulo + sx]; if (pixel) { collision |= *BITMAP_ADDR16(bitmap, dy, dx); *BITMAP_ADDR16(bitmap, dy, dx) = machine.pens[pixel]; } } } } } if (collision) device_set_input_line(state->m_maincpu, 0, ASSERT_LINE); } static void circus_draw_fg( running_machine &machine, bitmap_t *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); } SCREEN_UPDATE( circus ) { circus_state *state = screen->machine().driver_data(); tilemap_draw(bitmap, cliprect, state->m_bg_tilemap, 0, 0); circus_draw_fg(screen->machine(), bitmap, cliprect); draw_sprite_collision(screen->machine(), bitmap, cliprect); return 0; } static void robotbwl_draw_box( bitmap_t *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); } static void robotbwl_draw_scoreboard( bitmap_t *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); } static void robotbwl_draw_bowling_alley( bitmap_t *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); } static void robotbwl_draw_ball( running_machine &machine, bitmap_t *bitmap, const rectangle *cliprect ) { circus_state *state = machine.driver_data(); drawgfx_transpen(bitmap,/* Y is horizontal position */ cliprect,machine.gfx[1], state->m_clown_z, 0, 0,0, state->m_clown_y + 8, state->m_clown_x + 8, 0); } SCREEN_UPDATE( robotbwl ) { circus_state *state = screen->machine().driver_data(); tilemap_draw(bitmap, cliprect, state->m_bg_tilemap, 0, 0); robotbwl_draw_scoreboard(bitmap, cliprect); robotbwl_draw_bowling_alley(bitmap, cliprect); robotbwl_draw_ball(screen->machine(), bitmap, cliprect); return 0; } static void crash_draw_car( running_machine &machine, bitmap_t *bitmap, const rectangle *cliprect ) { circus_state *state = machine.driver_data(); drawgfx_transpen(bitmap,/* Y is horizontal position */ cliprect,machine.gfx[1], state->m_clown_z, 0, 0,0, state->m_clown_y, state->m_clown_x - 1, 0); } SCREEN_UPDATE( crash ) { circus_state *state = screen->machine().driver_data(); tilemap_draw(bitmap, cliprect, state->m_bg_tilemap, 0, 0); crash_draw_car(screen->machine(), bitmap, cliprect); return 0; } SCREEN_UPDATE( ripcord ) { circus_state *state = screen->machine().driver_data(); tilemap_draw(bitmap, cliprect, state->m_bg_tilemap, 0, 0); draw_sprite_collision(screen->machine(), bitmap, cliprect); return 0; }