diff options
| -rw-r--r-- | engines/cine/gfx.cpp | 33 |
1 files changed, 28 insertions, 5 deletions
diff --git a/engines/cine/gfx.cpp b/engines/cine/gfx.cpp index 3d0ad278b9..bbd79aa391 100644 --- a/engines/cine/gfx.cpp +++ b/engines/cine/gfx.cpp @@ -282,20 +282,43 @@ void FWRenderer::drawMessage(const char *str, int x, int y, int width, byte colo */ void FWRenderer::drawPlainBox(int x, int y, int width, int height, byte color) { int i; - byte *dest = _backBuffer + y * 320 + x; + // Handle horizontally flipped boxes if (width < 0) { x += width; - width = -width; + width = ABS(width); } + // Handle vertically flipped boxes if (height < 0) { y += height; - height = -height; + height = ABS(height); } - for (i = 0; i < height; i++) { - memset(dest + i * 320, color, width); + // Handle horizontal boundaries + if (x < 0) { + width += x; // Remove invisible columns + x = 0; // Start drawing at the screen's left border + } else if (x > 319) { + // Nothing left to draw as we're over the screen's right border + width = 0; + } + + // Handle vertical boundaries + if (y < 0) { + height += y; // Remove invisible rows + y = 0; // Start drawing at the screen's top border + } else if (y > 199) { + // Nothing left to draw as we're below the screen's bottom border + height = 0; + } + + // Draw the box if it's not empty + if (width > 0 && height > 0) { + byte *dest = _backBuffer + y * 320 + x; + for (i = 0; i < height; i++) { + memset(dest + i * 320, color, width); + } } } |