diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/viewport.cpp | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/src/viewport.cpp b/src/viewport.cpp index 12b4a71a5..40abfd242 100644 --- a/src/viewport.cpp +++ b/src/viewport.cpp @@ -489,12 +489,13 @@ static void AddCombinedSprite(SpriteID image, SpriteID pal, int x, int y, byte z /** Draw a (transparent) sprite at given coordinates with a given bounding box. * The bounding box extends from (x + bb_offset_x, y + bb_offset_y, z + bb_offset_z) to (x + w - 1, y + h - 1, z + dz - 1), both corners included. + * Bounding boxes with bb_offset_x == w or bb_offset_y == h or bb_offset_z == dz are allowed and produce thin slices. * * @note Bounding boxes are normally specified with bb_offset_x = bb_offset_y = bb_offset_z = 0. The extent of the bounding box in negative direction is * defined by the sprite offset in the grf file. * However if modifying the sprite offsets is not suitable (e.g. when using existing graphics), the bounding box can be tuned by bb_offset. * - * @pre w > bb_offset_x, h > bb_offset_y, dz > bb_offset_z. Else w, h or dz are ignored. + * @pre w >= bb_offset_x, h >= bb_offset_y, dz >= bb_offset_z. Else w, h or dz are ignored. * * @param image the image to combine and draw, * @param pal the provided palette, @@ -575,13 +576,13 @@ void AddSortableSpriteToDraw(SpriteID image, SpriteID pal, int x, int y, int w, ps->image = image; ps->pal = pal; ps->xmin = x + bb_offset_x; - ps->xmax = x + max(bb_offset_x, w - 1); + ps->xmax = x + max(bb_offset_x, w) - 1; ps->ymin = y + bb_offset_y; - ps->ymax = y + max(bb_offset_y, h - 1); + ps->ymax = y + max(bb_offset_y, h) - 1; ps->zmin = z + bb_offset_z; - ps->zmax = z + max(bb_offset_z, dz - 1); + ps->zmax = z + max(bb_offset_z, dz) - 1; ps->comparison_done = false; ps->child = NULL; |