a

1 files changed, 6 insertions, 4 deletions

diff --git a/src/camera-offset.cpp b/src/camera-offset.cpp
index 2595d1d8..3087cf13 100644
--- a/src/camera-offset.cpp
+++ b/src/camera-offset.cpp
@@ -1,6 +1,7 @@
 #include "camera-offset.hpp"
 #include "tile-defs.hpp"
 #include "shaders/tile-shader.hpp"
+#include "compat/assert.hpp"
 #include <Magnum/Math/Vector2.h>
 
 namespace floormat {
@@ -11,10 +12,11 @@ with_shifted_camera_offset::with_shifted_camera_offset(tile_shader& shader, shor
     _shader{shader},
     _offset{shader.camera_offset()}
 {
-    const auto offset = tile_shader::project({float(x)*TILE_MAX_DIM*TILE_SIZE[0],
-                                              float(y)*TILE_MAX_DIM*TILE_SIZE[1],
-                                              0});
-    _shader.set_camera_offset(_offset + offset);
+    const auto offset = _offset +  tile_shader::project({float(x)*TILE_MAX_DIM*TILE_SIZE[0],
+                                                         float(y)*TILE_MAX_DIM*TILE_SIZE[1],
+                                                         0});
+    _shader.set_camera_offset(offset);
+    ASSERT(std::abs(offset[0]) < 1 << 24 && std::abs(offset[1]) < 1 << 24);
 }
 
 with_shifted_camera_offset::~with_shifted_camera_offset()