src, senery, serialize: implement z offset

1 files changed, 3 insertions, 3 deletions

diff --git a/src/entity.cpp b/src/entity.cpp
index 971b532d..1b54117d 100644
--- a/src/entity.cpp
+++ b/src/entity.cpp
@@ -48,15 +48,15 @@ entity::~entity() noexcept
 
 float entity::ordinal() const
 {
-    return ordinal(coord.local(), offset);
+    return ordinal(coord.local(), offset, atlas->group(r).z_offset);
 }
 
-float entity::ordinal(local_coords xy, Vector2b offset) const
+float entity::ordinal(local_coords xy, Vector2b offset, Vector2b z_offset) const
 {
     constexpr auto inv_tile_size = 1.f/TILE_SIZE2;
     constexpr float width = TILE_MAX_DIM+1;
     auto offset_ = ordinal_offset(offset);
-    auto vec = Vector2(xy) + offset_*inv_tile_size;
+    auto vec = Vector2(xy) + offset_*inv_tile_size + Vector2(z_offset)*inv_tile_size;
     return vec[1]*width + vec[0];
 }