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author | Michael Pearce | 2002-09-09 05:56:11 +0000 |
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committer | Michael Pearce | 2002-09-09 05:56:11 +0000 |
commit | 0fbefc72aa7fd29b74dd2fac41ebfae0dfcac781 (patch) | |
tree | 7db3576c01a534d363786bb7a16c18b85eec2452 /backends/sdl/sdl-common.cpp | |
parent | 5b8eb34406373daa7a167f89d32dbe72c3cdc005 (diff) | |
download | scummvm-rg350-0fbefc72aa7fd29b74dd2fac41ebfae0dfcac781.tar.gz scummvm-rg350-0fbefc72aa7fd29b74dd2fac41ebfae0dfcac781.tar.bz2 scummvm-rg350-0fbefc72aa7fd29b74dd2fac41ebfae0dfcac781.zip |
Applied roever's screen effects patch (#602595) and fixed LethalWP's Makefile ;)
svn-id: r4909
Diffstat (limited to 'backends/sdl/sdl-common.cpp')
-rw-r--r-- | backends/sdl/sdl-common.cpp | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/backends/sdl/sdl-common.cpp b/backends/sdl/sdl-common.cpp index 422ce8b353..bdedb8ed1a 100644 --- a/backends/sdl/sdl-common.cpp +++ b/backends/sdl/sdl-common.cpp @@ -135,6 +135,43 @@ void OSystem_SDL_Common::copy_rect(const byte *buf, int pitch, int x, int y, int } +void OSystem_SDL_Common::move_screen(int dx, int dy, int height) { + + if ((dx == 0) && (dy == 0)) + return; + + if (dx == 0) { + // vertical movement + if (dy > 0) { + // move down + // copy from bottom to top + for (int y = height - 1; y >= dy; y--) + copy_rect((byte *)sdl_screen->pixels + SCREEN_WIDTH * (y - dy), SCREEN_WIDTH, 0, y, SCREEN_WIDTH, 1); + } else { + // move up + // copy from top to bottom + for (int y = 0; y < height + dx; y++) + copy_rect((byte *)sdl_screen->pixels + SCREEN_WIDTH * (y - dy), SCREEN_WIDTH, 0, y, SCREEN_WIDTH, 1); + } + } else if (dy == 0) { + // horizontal movement + if (dx > 0) { + // move right + // copy from right to left + for (int x = SCREEN_WIDTH - 1; x >= dx; x--) + copy_rect((byte *)sdl_screen->pixels + x - dx, SCREEN_WIDTH, x, 0, 1, height); + } else { + // move left + // copy from left to right + for (int x = 0; x < SCREEN_WIDTH; x++) + copy_rect((byte *)sdl_screen->pixels + x - dx, SCREEN_WIDTH, x, 0, 1, height); + } + } else { + // free movement + // not neccessary for now + } +} + void OSystem_SDL_Common::add_dirty_rect(int x, int y, int w, int h) { if (force_full) return; |