/usr/src/castle-game-engine-5.2.0/3d/ is in castle-game-engine-src 5.2.0-3.
This file is owned by root:root, with mode 0o755.
..
/usr/src/castle-game-engine-5.2.0/3d/castle3d.pas
/usr/src/castle-game-engine-5.2.0/3d/castleboxes.pas
/usr/src/castle-game-engine-5.2.0/3d/castleboxes_generic_float.inc
/usr/src/castle-game-engine-5.2.0/3d/castleconvexhull.pas
/usr/src/castle-game-engine-5.2.0/3d/castlecubemaps.pas
/usr/src/castle-game-engine-5.2.0/3d/castlefrustum.pas
/usr/src/castle-game-engine-5.2.0/3d/castlegeometryarrays.pas
/usr/src/castle-game-engine-5.2.0/3d/castlenoise.pas
/usr/src/castle-game-engine-5.2.0/3d/castlenoise_interpolatednoise2d_linear_cosine.inc
/usr/src/castle-game-engine-5.2.0/3d/castlenoise_interpolatednoise2d_spline.inc
/usr/src/castle-game-engine-5.2.0/3d/castlenurbs.pas
/usr/src/castle-game-engine-5.2.0/3d/castleoctree.pas
/usr/src/castle-game-engine-5.2.0/3d/castlequaternions.pas
/usr/src/castle-game-engine-5.2.0/3d/castlerays.pas
/usr/src/castle-game-engine-5.2.0/3d/castlesectors.pas
/usr/src/castle-game-engine-5.2.0/3d/castleshaders.pas
/usr/src/castle-game-engine-5.2.0/3d/castlespacefillingcurves.pas
/usr/src/castle-game-engine-5.2.0/3d/castlespheresampling.pas
/usr/src/castle-game-engine-5.2.0/3d/castlesphericalharmonics.pas
/usr/src/castle-game-engine-5.2.0/3d/castleterrain.pas
/usr/src/castle-game-engine-5.2.0/3d/castletriangles.pas
/usr/src/castle-game-engine-5.2.0/3d/castletriangles_dualimplementation.inc
/usr/src/castle-game-engine-5.2.0/3d/castletriangles_istrianglespherecollision.inc
/usr/src/castle-game-engine-5.2.0/3d/castletriangulate.pas