Interpolated Render + Cleanup #10
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Philosophical decision to ignore most race conditions (i.e position) - does it really matter if we render some stuff that's split across 2 frames occassionally? Remove MO color layer, draw to screen buffer directly. Nice big perf increase as allegro should give frustrum culling.
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Closing for now. This stuff should still come across in some form eventually, but needs additional work. |
Architector4
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Oct 24, 2025
Not doing this can cause a crash due to the a sub pie menu being open when its pie slice is removed. For example, having a grenade launcher subpiemenu open when the current actor enters a "dying" state causes it to get detached, removing and clearing the subpiemenu, but not removing it as the active subpiemenu. The game then tries to render it and crashes on `m_LargeFont` being `nullptr`. For example, here's a gdb backtrace to where exactly the submenu gets cleared, and then where the game crashes, before this patch: ``` Thread 1 "CortexCommand" hit Breakpoint 1, RTE::PieMenu::Clear (this=0x5555813c5050) at ../Source/Entities/PieMenu.cpp:55 55 m_LargeFont = nullptr; #0 RTE::PieMenu::Clear (this=0x5555813c5050) at ../Source/Entities/PieMenu.cpp:55 cortex-command-community#1 0x000055555585c4d8 in RTE::PieMenu::Destroy (this=0x5555813c5050, notInherited=true) at ../Source/Entities/PieMenu.cpp:174 cortex-command-community#2 0x0000555555871d24 in RTE::PieSlice::PieMenuCustomDeleter::operator() (this=0x55557eb82ac8, pieMenu=0x5555813c5050) at ../Source/Entities/PieSlice.cpp:191 cortex-command-community#3 0x00005555558728d9 in std::unique_ptr<RTE::PieMenu, RTE::PieSlice::PieMenuCustomDeleter>::~unique_ptr (this=0x55557eb82ac8) at /usr/include/c++/15.2.1/bits/unique_ptr.h:399 cortex-command-community#4 0x000055555586fe6d in RTE::PieSlice::~PieSlice (this=0x55557eb829d0) at ../Source/Entities/PieSlice.cpp:17 cortex-command-community#5 0x000055555586feca in RTE::PieSlice::~PieSlice (this=0x55557eb829d0) at ../Source/Entities/PieSlice.cpp:17 cortex-command-community#6 0x000055555585edfa in RTE::PieMenu::RemovePieSlicesByOriginalSource (this=0x5555825f5de0, originalSource=0x55557062b730) at ../Source/Entities/PieMenu.cpp:459 cortex-command-community#7 0x00005555557b9c96 in RTE::Attachable::AddOrRemovePieSlicesAndListenersFromPieMenu (this=0x55557062b730, pieMenuToModify=0x5555825f5de0, addToPieMenu=false) at ../Source/Entities/Attachable.cpp:609 cortex-command-community#8 0x00005555557b8e64 in RTE::Attachable::SetParent (this=0x55557062b730, newParent=0x0) at ../Source/Entities/Attachable.cpp:541 cortex-command-community#9 0x00005555557f3b3d in RTE::HDFirearm::SetParent (this=0x55557062b730, newParent=0x0) at ../Source/Entities/HDFirearm.h:486 cortex-command-community#10 0x000055555582cf54 in RTE::MOSRotating::RemoveAttachable (this=0x55557119cac0, attachable=0x55557062b730, addToMovableMan=true, addBreakWounds=false) at ../Source/Entities/MOSRotating.cpp:1507 cortex-command-community#11 0x00005555557b8582 in RTE::Attachable::RemoveAttachable (this=0x55557119cac0, attachable=0x55557062b730, addToMovableMan=true, addBreakWounds=false) at ../Source/Entities/Attachable.cpp:466 cortex-command-community#12 0x000055555577d1b4 in RTE::AHuman::Update (this=0x5555717641d0) at ../Source/Entities/AHuman.cpp:2608 cortex-command-community#13 0x0000555555ae03c5 in RTE::MovableMan::Update (this=0x555557405d50) at ../Source/Managers/MovableMan.cpp:1405 cortex-command-community#14 0x000055555567597c in RunGameLoop () at ../Source/Main.cpp:354 cortex-command-community#15 0x000055555567658a in main (argc=1, argv=0x7fffffffdc88) at ../Source/Main.cpp:468 Thread 1 "CortexCommand" received signal SIGSEGV, Segmentation fault. 0x000055555593a220 in RTE::GUIFont::GetFontHeight (this=0x0) at ../Source/GUI/GUIFont.cpp:394 394 return m_FontHeight; ``` I cannot replicate the crash with this patch applied.
Architector4
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Oct 27, 2025
Not doing this causes a crash when a full scene save is done and the move path happens to be empty. Happened to me multiple times over in Conquest mode (yes i know it's broken, doesn't *have* to be) when I set my brain robot on a path to dig a tunnel. Here's a gdb backtrace of the crash: ``` [Detaching after fork from child process 73767] /usr/include/c++/15.2.1/bits/stl_list.h:1688: std::__cxx11::list<_Tp, _Allocator>::const_reference std::__cxx11::list<_Tp, _Allocator>::back() const [with _Tp = RTE::Vector; _Alloc = std::allocator<RTE::Vector>; const_reference = const RTE::Vector&]: Assertion '!this->empty()' failed. Thread 1 "CortexCommand" received signal SIGABRT, Aborted. 0x00007ffff6aaa0db in pthread_kill () from /usr/lib/libc.so.6 (gdb) lay src (gdb) bt #0 0x00007ffff6aaa0db in pthread_kill () from /usr/lib/libc.so.6 cortex-command-community#1 0x00007ffff6a447c8 in raise () from /usr/lib/libc.so.6 cortex-command-community#2 0x00007ffff6a2560d in abort () from /usr/lib/libc.so.6 cortex-command-community#3 0x00007ffff6e9870f in std::__glibcxx_assert_fail (file=<optimized out>, line=<optimized out>, function=<optimized out>, condition=<optimized out>) at /usr/src/debug/gcc/gcc/libstdc++-v3/src/c++11/assert_fail.cc:41 cortex-command-community#4 0x00005555556b7ff8 in std::__cxx11::list<RTE::Vector, std::allocator<RTE::Vector> >::back (this=0x555583892728) at /usr/include/c++/15.2.1/bits/stl_list.h:1688 cortex-command-community#5 0x0000555555890712 in RTE::Actor::GetMovePathEnd (this=0x555583891900) at ../Source/Entities/Actor.h:450 cortex-command-community#6 0x000055555588470c in RTE::Scene::SaveSceneObject (this=0x7ffe82e4bb90, writer=..., sceneObjectToSave=0x555583891900, isChildAttachable=false, saveFullData=true) at ../Source/Entities/Scene.cpp:1369 cortex-command-community#7 0x0000555555880abc in RTE::Scene::Save (this=0x7ffe82e4bb90, writer=...) at ../Source/Entities/Scene.cpp:1097 cortex-command-community#8 0x0000555555d9afca in RTE::operator<< (writer=..., operand=0x7ffe82e4bb90) at ../Source/System/Serializable.cpp:53 cortex-command-community#9 0x0000555555ad13ab in RTE::Writer::NewPropertyWithValue<RTE::Scene const*> (this=0x7fffffffcab0, propName="AddScene", propValue=@0x7fffffffc810: 0x7ffe82e4bb90) at ../Source/System/Writer.h:103 cortex-command-community#10 0x0000555555acc865 in RTE::MetaMan::Save (this=0x555557448710, writer=...) at ../Source/Managers/MetaMan.cpp:287 cortex-command-community#11 0x0000555555beb237 in RTE::MetagameGUI::SaveGame (this=0x55555ba82b20, saveName="AutoSave", savePath="Userdata/UserSavesConquest.rte/AutoSave.ini", resaveSceneData=false) at ../Source/Menus/MetagameGUI.cpp:1109 cortex-command-community#12 0x0000555555c02cbb in RTE::MetagameGUI::FinalizeOffensive (this=0x55555ba82b20) at ../Source/Menus/MetagameGUI.cpp:4458 cortex-command-community#13 0x0000555555c018d5 in RTE::MetagameGUI::UpdateOffensives (this=0x55555ba82b20) at ../Source/Menus/MetagameGUI.cpp:4321 cortex-command-community#14 0x0000555555bee37e in RTE::MetagameGUI::Update (this=0x55555ba82b20) at ../Source/Menus/MetagameGUI.cpp:1492 cortex-command-community#15 0x0000555555acf7a0 in RTE::MetaMan::Update (this=0x555557448710) at ../Source/Managers/MetaMan.cpp:892 cortex-command-community#16 0x0000555555ac2e84 in RTE::MenuMan::UpdateMetaGameMenu (this=0x55555740f4e0) at ../Source/Managers/MenuMan.cpp:221 cortex-command-community#17 0x0000555555ac2ab8 in RTE::MenuMan::Update (this=0x55555740f4e0) at ../Source/Managers/MenuMan.cpp:146 cortex-command-community#18 0x0000555555674e81 in RunMenuLoop () at ../Source/Main.cpp:272 cortex-command-community#19 0x0000555555675a55 in RunGameLoop () at ../Source/Main.cpp:374 cortex-command-community#20 0x000055555567658a in main (argc=1, argv=0x7fffffffdc88) at ../Source/Main.cpp:468 ``` Doesn't crash with this applied.
Architector4
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Nov 5, 2025
This hopefully fixes a random use-after-free error I've just had. As far as I can tell, the scenario of the crash is as follows.
1. An item is set as item in reach of a character at some point before
2. It gets marked to delete, probably during `MovableMan::Travel()` functions, i.e. when shot hard or whatever
3. It is *not* unset as the item in reach in `MovableMan::PreControllerUpdate()` which is run after `Travel()`
4. It gets properly deleted later in the same `MovableMan::Update()` call
5. `RunGameLoop()` later calls `FrameMan::Draw()` which eventually calls `RTE::AHuman::DrawHUD` which renders the **deleted** item in reach's name.
This fix is *not* perfect, I think. Something *between* `PreControllerUpdate()` and the eventual deletion could still catch it. I wonder if this `MOID` thing could solve this by making the relevant code have to figure out if the entity still exists or not reliably lol
<details>
<summary>Address Sanitizer's complaint it gave me</summary>
```
=================================================================
==37450==ERROR: AddressSanitizer: heap-use-after-free on address 0x7c2ffd5a8e50 at pc 0x7ffff787aa64 bp 0x7fffffffa6f0 sp 0x7fffffff9e68
READ of size 4 at 0x7c2ffd5a8e50 thread T0
#0 0x7ffff787aa63 in printf_common /usr/src/debug/gcc/gcc/libsanitizer/sanitizer_common/sanitizer_common_interceptors_format.inc:563
cortex-command-community#1 0x7ffff789f956 in vsnprintf /usr/src/debug/gcc/gcc/libsanitizer/sanitizer_common/sanitizer_common_interceptors.inc:1707
cortex-command-community#2 0x7ffff78a24dc in snprintf /usr/src/debug/gcc/gcc/libsanitizer/sanitizer_common/sanitizer_common_interceptors.inc:1778
cortex-command-community#3 0x555555c6e9a7 in RTE::AHuman::DrawHUD(BITMAP*, RTE::Vector const&, int, bool) ../Source/Entities/AHuman.cpp:2935
cortex-command-community#4 0x55555646def3 in RTE::MovableMan::DrawHUD(BITMAP*, RTE::Vector const&, int, bool) ../Source/Managers/MovableMan.cpp:1956
cortex-command-community#5 0x555556539ab6 in RTE::SceneMan::Draw(BITMAP*, BITMAP*, RTE::Vector const&, bool, bool) ../Source/Managers/SceneMan.cpp:2630
cortex-command-community#6 0x5555563b28ad in RTE::FrameMan::Draw() ../Source/Managers/FrameMan.cpp:870
cortex-command-community#7 0x555555a4212e in RunGameLoop() ../Source/Main.cpp:395
cortex-command-community#8 0x555555a42dc9 in main ../Source/Main.cpp:468
cortex-command-community#9 0x7ffff6227b8a (/usr/lib/libc.so.6+0x27b8a) (BuildId: 3fb5bf3586fec17ba65a16ec9a3132455897d306)
cortex-command-community#10 0x7ffff6227c4a in __libc_start_main (/usr/lib/libc.so.6+0x27c4a) (BuildId: 3fb5bf3586fec17ba65a16ec9a3132455897d306)
cortex-command-community#11 0x555555a3ee34 in _start (/media/ext_hdd/nobackup/architector4/Downloads/Cortex-Command-Community-Project/builddebug/CortexCommand+0x4eae34) (BuildId: 47c8b8b068e428fe0a2bb7632a0eb2dabd939356)
0x7c2ffd5a8e50 is located 0 bytes inside of 31-byte region [0x7c2ffd5a8e50,0x7c2ffd5a8e6f)
freed by thread T0 here:
#0 0x7ffff7954e8d in operator delete(void*, unsigned long) /usr/src/debug/gcc/gcc/libsanitizer/asan/asan_new_delete.cpp:155
cortex-command-community#1 0x555555a543de in std::__new_allocator<char>::deallocate(char*, unsigned long) /usr/include/c++/15.2.1/bits/new_allocator.h:172
cortex-command-community#2 0x555555a4c495 in std::allocator<char>::deallocate(char*, unsigned long) /usr/include/c++/15.2.1/bits/allocator.h:215
cortex-command-community#3 0x555555a4c495 in std::allocator_traits<std::allocator<char> >::deallocate(std::allocator<char>&, char*, unsigned long) /usr/include/c++/15.2.1/bits/alloc_traits.h:649
cortex-command-community#4 0x555555a4c495 in std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_destroy(unsigned long) /usr/include/c++/15.2.1/bits/basic_string.h:305
cortex-command-community#5 0x555555a49154 in std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_dispose() /usr/include/c++/15.2.1/bits/basic_string.h:299
cortex-command-community#6 0x555555a48da3 in std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string() /usr/include/c++/15.2.1/bits/basic_string.h:896
cortex-command-community#7 0x5555568f6aa3 in RTE::Entity::~Entity() ../Source/System/Entity.cpp:18
cortex-command-community#8 0x555555f6150d in RTE::SceneObject::~SceneObject() ../Source/Entities/SceneObject.cpp:18
cortex-command-community#9 0x555555e0bd63 in RTE::MovableObject::~MovableObject() ../Source/Entities/MovableObject.cpp:35
cortex-command-community#10 0x555555dc24ab in RTE::MOSprite::~MOSprite() ../Source/Entities/MOSprite.cpp:19
cortex-command-community#11 0x555555dd209d in RTE::MOSRotating::~MOSRotating() ../Source/Entities/MOSRotating.cpp:44
cortex-command-community#12 0x555555ce5353 in RTE::Attachable::~Attachable() ../Source/Entities/Attachable.cpp:21
cortex-command-community#13 0x555555d70bef in RTE::HeldDevice::~HeldDevice() ../Source/Entities/HeldDevice.cpp:27
cortex-command-community#14 0x555555d55995 in RTE::HDFirearm::~HDFirearm() ../Source/Entities/HDFirearm.cpp:25
cortex-command-community#15 0x555555d559b1 in RTE::HDFirearm::~HDFirearm() ../Source/Entities/HDFirearm.cpp:25
cortex-command-community#16 0x55555644dd39 in RTE::MovableMan::Update() ../Source/Managers/MovableMan.cpp:1618
cortex-command-community#17 0x555555a41896 in RunGameLoop() ../Source/Main.cpp:354
cortex-command-community#18 0x555555a42dc9 in main ../Source/Main.cpp:468
cortex-command-community#19 0x7ffff6227b8a (/usr/lib/libc.so.6+0x27b8a) (BuildId: 3fb5bf3586fec17ba65a16ec9a3132455897d306)
previously allocated by thread T0 here:
#0 0x7ffff7953d2d in operator new(unsigned long) /usr/src/debug/gcc/gcc/libsanitizer/asan/asan_new_delete.cpp:86
cortex-command-community#1 0x555555a491a7 in std::__new_allocator<char>::allocate(unsigned long, void const*) /usr/include/c++/15.2.1/bits/new_allocator.h:151
cortex-command-community#2 0x555555a4689a in std::allocator<char>::allocate(unsigned long) /usr/include/c++/15.2.1/bits/allocator.h:203
cortex-command-community#3 0x555555a4689a in std::allocator_traits<std::allocator<char> >::allocate(std::allocator<char>&, unsigned long) /usr/include/c++/15.2.1/bits/alloc_traits.h:614
cortex-command-community#4 0x555555a4689a in std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_S_allocate(std::allocator<char>&, unsigned long) /usr/include/c++/15.2.1/bits/basic_string.h:142
cortex-command-community#5 0x555555a4654d in std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_create(unsigned long&, unsigned long) /usr/include/c++/15.2.1/bits/basic_string.tcc:164
cortex-command-community#6 0x555555a4d0d6 in std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_assign(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) /usr/include/c++/15.2.1/bits/basic_string.tcc:319
cortex-command-community#7 0x555555a4d692 in std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::assign(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) /usr/include/c++/15.2.1/bits/basic_string.h:1771
cortex-command-community#8 0x555555a49a7a in std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::operator=(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) /usr/include/c++/15.2.1/bits/basic_string.h:906
cortex-command-community#9 0x5555568f6cc1 in RTE::Entity::Create(RTE::Entity const&) ../Source/System/Entity.cpp:34
cortex-command-community#10 0x555555f63fb2 in RTE::SceneObject::Create(RTE::SceneObject const&) ../Source/Entities/SceneObject.cpp:159
cortex-command-community#11 0x555555e0d6f5 in RTE::MovableObject::Create(RTE::MovableObject const&) ../Source/Entities/MovableObject.cpp:193
cortex-command-community#12 0x555555dc3b61 in RTE::MOSprite::Create(RTE::MOSprite const&) ../Source/Entities/MOSprite.cpp:102
cortex-command-community#13 0x555555dd415d in RTE::MOSRotating::Create(RTE::MOSRotating const&) ../Source/Entities/MOSRotating.cpp:194
cortex-command-community#14 0x555555ce5c08 in RTE::Attachable::Create(RTE::Attachable const&) ../Source/Entities/Attachable.cpp:75
cortex-command-community#15 0x555555d7227a in RTE::HeldDevice::Create(RTE::HeldDevice const&) ../Source/Entities/HeldDevice.cpp:115
cortex-command-community#16 0x555555d56897 in RTE::HDFirearm::Create(RTE::HDFirearm const&) ../Source/Entities/HDFirearm.cpp:100
cortex-command-community#17 0x555555d6ed11 in RTE::HDFirearm::Clone(RTE::Entity*) const ../Source/Entities/HDFirearm.h:20
cortex-command-community#18 0x55555723e9ba in RTE::LuaAdaptersEntityCreate::RandomHDFirearm(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, int) ../Source/Lua/LuaAdapters.cpp:79
cortex-command-community#19 0x5555570c73d0 in int luabind::detail::free_functions::returns<RTE::HDFirearm*>::call<luabind::detail::policy_cons<luabind::detail::adopt_policy<0>, luabind::detail::null_type>, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, int>(RTE::HDFirearm* (*)(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, int), lua_State*, luabind::detail::policy_cons<luabind::detail::adopt_policy<0>, luabind::detail::null_type> const*) ../external/sources/luabind-0.7.1/luabind/function.hpp:347
cortex-command-community#20 0x5555570adb9e in int luabind::detail::free_functions::call<luabind::detail::policy_cons<luabind::detail::adopt_policy<0>, luabind::detail::null_type>, RTE::HDFirearm*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, int>(RTE::HDFirearm* (*)(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, int), lua_State*, luabind::detail::policy_cons<luabind::detail::adopt_policy<0>, luabind::detail::null_type> const*) ../external/sources/luabind-0.7.1/luabind/function.hpp:403
cortex-command-community#21 0x55555708ffbb in luabind::detail::free_functions::function_callback_s<RTE::HDFirearm* (*)(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, int), luabind::detail::policy_cons<luabind::detail::adopt_policy<0>, luabind::detail::null_type> >::apply(lua_State*, void (*)()) ../external/sources/luabind-0.7.1/luabind/function.hpp:176
cortex-command-community#22 0x555557fab537 in luabind::detail::free_functions::overload_rep::call(lua_State*, void (*)()) const ../external/sources/luabind-0.7.1/luabind/function.hpp:75
cortex-command-community#23 0x555557fab0f4 in luabind::detail::free_functions::function_dispatcher(lua_State*) ../external/sources/luabind-0.7.1/src/function.cpp:142
cortex-command-community#24 0x555556ef05f5 in lj_BC_FUNCC external/sources/LuaJIT-2.1/src/lj_vm.s:857
SUMMARY: AddressSanitizer: heap-use-after-free ../Source/Entities/AHuman.cpp:2935 in RTE::AHuman::DrawHUD(BITMAP*, RTE::Vector const&, int, bool)
Shadow bytes around the buggy address:
0x7c2ffd5a8b80: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x7c2ffd5a8c00: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fd fd
0x7c2ffd5a8c80: fd fa fa fa fa fa fa fa fa fa fd fd fd fa fa fa
0x7c2ffd5a8d00: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x7c2ffd5a8d80: fa fa fd fd fd fa fa fa fa fa fa fa fa fa fd fd
=>0x7c2ffd5a8e00: fd fa fa fa fa fa fa fa fa fa[fd]fd fd fd fa fa
0x7c2ffd5a8e80: fd fd fd fa fa fa fa fa fa fa fa fa fd fd fd fa
0x7c2ffd5a8f00: fa fa fd fd fd fa fa fa fd fd fd fd fa fa fd fd
0x7c2ffd5a8f80: fd fa fa fa fd fd fd fa fa fa fd fd fd fa fa fa
0x7c2ffd5a9000: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x7c2ffd5a9080: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fd fd
Shadow byte legend (one shadow byte represents 8 application bytes):
Addressable: 00
Partially addressable: 01 02 03 04 05 06 07
Heap left redzone: fa
Freed heap region: fd
Stack left redzone: f1
Stack mid redzone: f2
Stack right redzone: f3
Stack after return: f5
Stack use after scope: f8
Global redzone: f9
Global init order: f6
Poisoned by user: f7
Container overflow: fc
Array cookie: ac
Intra object redzone: bb
ASan internal: fe
Left alloca redzone: ca
Right alloca redzone: cb
==37450==ABORTING
```
</details>
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Multithreaded-sim-and-render cleanup and improvements, but un-multithreaded again as the work required to get it stable is very significant.
Adds interpolation for smooth slow motion, and cleans up a lotta legacy code. Also makes drawing significantly faster by avoiding unnecessary two-stage drawing to intermediate ColorMO map.
Cleans up or removes a shitload of legacy code.