* Fix animation frame_speed and blend loosing precision due to incorrect data type
Add lua function set_animation_frame_speed to update the frame speed without resetting the animation to start
* Fix HP transport + some double <-> float problems
TOCLIENT_HP transport u16 hp as a u8, use u16 HP, this prevent HP over 255 to overflow across network
* Fix more double/float problem in serverpackethandler & remove implicit struct type for TileAnimationParams
* Fix connection unittests container
* Formspec: Add options to set background color and opacity (fullscreen mode)
* Enhance previous comment: Set formspec background when regenerate UI.
* This permit to do the calcul only at regen and override it with bgcolor tag
* Add a setting for default background color into formspec, separated from fullscreen
* Add a little performance gain on formspecs using a const ref instead of copying formspec string
* Refactor clientevent structure
* Move structure outside of client header
* Create client events on heap not stack, this remove the ClientEvent object copy
* Use clientEventHandler to route events
* Alternative code for slipping
- does not depend on frame rate
- controllable via environment variables for now
* Adjust slipping speed for item entities too.
* Final version of framerate-independent slippery code
* Remove dead code and fix formatting
* getStandingNodePos should only look 0.05 nodes downwards
This ensures that, even if the player is standing on a partially
filled node, this node is used as the standing node and not the
node below it.
Specific use: enables slippery slabs
* Exchange global getStandingPosNode change for local inline change
Reverts previous commit
* Revert the item movement changes
* Slippery nodes now slip over cliffs and edges
Players no longer suddenly stop before falling off.
Also refactored slippery code into getSlipFactor method.
* Slipping over an edge gated by player's is_slipping state
A new flag for just this case, to reduce costly node lookups in
the normal case of leaning over a non-slippery edge.
Public access for consistency and potential future uses.
* Minor code tweaks / cosmetics
* Add temp variable to improve readability and fix indentation issues
* Move Connection threads to dedicated files + various cleanups
* ConnectionReceiveThread::processPacket now uses function pointer table to route MT packet types
* Various code style fixes
* Code style with clang-format
* Various SharedBuffer copy removal
* SharedBuffer cannot be copied anymore using Buffer
* Fix many SharedBuffer copy (thanks to delete operator)
* Setting: Safe digging and placing
* New setting 'safe_dig_and_place' under Controls
* If set, digging and placing will not auto-repeat
* Releasing buttons unblocks the respective action again
* Useful for inexperienced users in creative mode where default
repeat times may be too short
* Safe placing (right click repetition) does not need a guarding flag
* Added new setting to minetest.conf.example
* Cleanup network headers
* Move peerhandler to a specific header to reduce compilation times
* Move socket.cpp/h to network folder
* More work
* Network code cleanups
* Move socket.{cpp,h} to network folder
* Move Address object to network/address.{cpp,h}
* Move network exceptions to network/networkexceptions.h
* Client: use unique_ptr for Connection
* Server/ClientIface: use shared_ptr for Connection
* Format fixes
* Remove socket.cpp socket.h from clang-format whitelist
* Also fix NetworkPacket code style & make it under clang-format
* Respect object property hp_max field for players
This allows modders to configure the maximal HP per player
* Statbars: Downscale bar to full 20 HP when exceeding this value
Add default max HP for players and breath constants to builtin
Document the constants
* Rename PLAYER_MAX_HP -> PLAYER_MAX_HP_DEFAULT
the BS constant
implicitly promotes all position calculations it is used in to double even
though positions (= v3f) are only meant to be floats.
There are many, many similar occurrences everywhere, but I'm not willing to
hunt down all; I only fixed the little part I'm already familiar with.
* Modernize source code: last par
* Use empty when needed
* Use emplace_back instead of push_back when needed
* For range-based loops
* Initializers fixes
* constructors, destructors default
* c++ C stl includes
* Code modernization: subfolders
Modernize various code on subfolders client, network, script, threading, unittests, util
* empty function
* default constructor/destructor
* for range-based loops
* use emplace_back instead of push_back
* C++ STL header style
* Make connection.cpp readable in a pointed place + typo
* remove sector meta loading/saving from files which targets dead code (differs_from_disk is always empty)
* this remove empty ServerMapSector and ClientMapSector, remove MapSector childs
* empty function
* default constructor/destructor
* for range-based loops
* use emplace_back instead of push_back
* remove some unused headers in some cpp variable
* empty function
* default constructor/destructor
* remove unused Map::emergeSector(a,b)
* for range-based loops
* migrate a dirs[7] table to direction tables
* remove various old unused function
* Modernize various files (src/m*)
* range-based for loops
* code style
* C++ headers instead of C headers
* Default operators
* empty function
Thanks to clang-tidy
* server.cpp: unroll setting when sending mapblocks
* Improve a little bit performance when sending mapblocks massively
* Use a range based for
* Code style fixes
* clientobject, clouds, collision, clientsimpleobject: code modernization
* use range-based for loops
* simplify some tests
* various code style fixes
* use emplace_back instead of push_back when necessary
* use auto on some iterators
* use default operator when needed
* unroll v3s16 creation on collisionMoveSimple
Minetest performance improvement has been huge since months, server step reduction will permit to handle client events a little bit faster without too many penalty costs due to core engine
* use range-based for loops
* simplify some tests
* various code style fixes
* remove debugprint in ClientMap::getBackgroundBrightness, debug code was not intended to be there
* remove unused fields in MapDrawControl
* use emplace_back instead of push_back when necessary
* ClientInterface: add a function to verify (correctly) if user limit was reached
CS_HelloSent is a better indicator of active slots than CS_Created, which are session objects created after init packet reception
Switch existing checks to ClientInterface::isUserLimitReached()
Use range-based for loop for getClientIds() used function too
This will fix #6254 (not the memory overhead if init is flooded)
* Various code style fixes
* Use range based for loops
* Use empty instead of empty objects
* Use C++11 default keyword for trivial constructors and destructors
* Drop some useless casts
* Use emplace_back instead of push_back to improve performance of some vectors push
* Use more for range based loops
* Simplify some tests
* Code style fixes
* connection.h: better PeerChange constructor instead of creating uninitalized object and then affect variables
* Use various modern for loops
* Make some loop iterator constants, whereas there weren't
* Use empty on some size() > 0 tests
* Various little codestyle fixes
* Fix an hidden scope variable in Server::SendBlockNoLock
* Use Environment interface instead of ClientEnvironemnt
* Don't create slippery variable and then re-affect it
* itemgroup_get return a int, properly test != 0 to be clearer
Use various ranged-based for loops in ServerEnvironment::step
Also set ServerObject::getBasePosition const to be compliant
ServerEnvironment::deleteParticleSpawner: use a const iterator
When minetest is launched, if there was no nameprovided in
configuration or parameters, the game would not show any error in
console. if the --go parameter was also prowided, the game would
exit without an error. This is undesired behavior, so this merged
commit add the missing function that displays the missing error
message in console.
Gives starting singleplayer games this subtle "dawn of a new world" feel.
I would have set it even earlier (up to 4:45am), but I was worried that in
some pre-existing games the player could be overwhelmed by hostile
mobs right at the start, seriously changing gameplay.
It's just the default, individual games should be able to override it, and
for public servers it's irrelevant anyway, because only the first player to
set foot in the world will notice, and that's usually the server admin.
Another small general problem: the player is always standing exactly on the
bondary between 2 nodes e.g. Y=1.5 is exactly between nodes Y=1 and Y=2.
floatToInt() and myround() will round +/-n.5 always 'outwards' to +/-(n+1),
which means they behave differently depending on where you are: they round
upwards above sea level and downwards when underground. This inconsistency
comes from the way the coordinates are calculated, independent of the
specific C++ code.
The result is a tiny bit of lost performance when moving underground,
because 1 node level more than necessary is checked for collisions. This can
be amended by adding a tiny offset to minpos_f.Y, like @paramat suggested.
This is not an elegant solution, but still better than wasting CPU.
To determine the area (nodes) where a player movement took place
collisionMoveSimple() first took the old/new player coordinates and rounded
them to integers, then added the player character's collision box and
implicitely rounded the result. This has 2 problems:
Rounding the position and the box seperately, then adding the resulting
integers means you get twice the rounding error. And implicit rounding
always rounds towards 0.0, unlike floatToInt(), which rounds towards the
closest integer.
Previous (simplified) behavior: round(pos)+(int)box, for example player at
Y=0.9, body is 1.75m high: round(0.9)+(int)1.75 = 1+1 = 2.
==> A character's height of 1.75m always got rounded down to 1m, its width
of +/-0.3 even became 0.
Fixed by adding the floats first, then rounding properly: round(pos+box) =
round(0.9+1.75) = round(2.65) = 3.
Construct dungeons from the node defined as biome 'node_stone' if
'mapgen_stone', 'mapgen_desert_stone' and 'mapgen_sandstone' are not
detected.
Feature long-intended by kwolekr/hmmmm and present in code as a TODO.
Move point at which light is sampled up to 0.5 nodes above foot level,
to avoid that point sometimes passing into the node below causing the
model to go dark.
The getBackgroundBrightness() function detects darkness in the view direction
to decide when to make the skybox dark. The volume checked was too narrow and
missed the left and right edges of the view, too easily causing a dark skybox.
Widen the checked volume to match a FOV of 72 degrees and a 16:9 aspect ratio
game window.
Remove usage of the SharedBuffer in zlib compression which has two problems:
* We copied the whole memory block to compress it (not good with mapblocks)
* We copied sometimes strings to SharedBuffer to SharedBuffer (2nd time)
Use this method in MapNode::serializeBulk + optimize serialization but merging 3 identical loops in a single loop
correctBlockNodeIds does 2 lookups for each loaded node, one to translate DB ID to name and a second to translate name to real ID. Name to real ID is very consumming if done on every node. As mapblocks are in most cases composed of many identical adjacent nodes, cache previous source and destination id and use them on the next node to prevent any lookup on those maps.
This reduce the function load from 15% of my CPU usage to ~0.7%, on the test, calls was reduced from 2.5M lookups to 42k lookups, it's a huge performance gain
* TileLayer: use shared_ptr for vector framespec
This reduce memory copy of TileLayer from (4 to 16) * FrameSpec where FrameSpec = (sizeof(int) + 3 * sizeof(ptr)) to int + sizeof(ptr)
Callgrind difference
Before: https://lut.im/RGkiJqQb8T/LeQIEXpAuRzfl7gd.png
After: https://lut.im/bcqmwee1xu/cTwtptY5tRuS9lp0.png
* Fix one push_back to use vector::emplace_back & optimize inclusions
* VoxelManip cleanups (const ref, const move) permitting to improve a little bit performance
* VoxelArea: precalculate extent (performance enhancement)
This permits to reduce extend high cost to zero and drop many v3s16 object creation/removal to calculate extent
It rebalance the client thread update to updateFastFaceRow instead of MapBlockMesh generation
This will also benefits to mapgen
Allows setting of the mountain 'zero level' (y where density gradient is zero).
It is easy to vertically shift smooth terrain by editing noise parameter 'offset',
but vertically shifting mountain terrain was complex and imprecise, involving
making a calculation based on an average of the mountain height parameter.
Ensure in-cloud fog is always stronger than outside-of-cloud-fog even when
using a small view range.
Also limit in-cloud fog range to a maximum of 32 nodes to keep it fairly
strong when using a large view range.
The change from 800x600 to 1024x576 (16:9) was a reduction in height which caused
user interface to become smaller.
Continue to use width 1024 as it is a common small screen width.
* [CSM] Add flavour limits controlled by server
Server send flavour limits to client permitting to disable or limit some Lua calls
* Add limits for reading nodedefs and itemdefs
* flavour: Add lookup node limits
* Merge get_node_or_nil into get_node.
Sending fake node doesn't make sense in CSM, just return nil if node is not available for any reason
* Add node range customization when noderange flavour is enabled (default 8 nodes)
* Limit nodes range & disable chat message sending by default
* Bump protocol version
Spawn player 1 node higher to avoid spawning waist-deep in a possible
biome 'dust' node, such as tundra snowblock.
Tune default offset to spawn players in a more interesting location on the
mandelbrot sets, on a raised area that looks like a spawn platform.
Tune julia parameters to help avoid spawn search failing, especially for
fractal 6.
For consistency return to 'FPS =', add comma before FPS.
Remove 'R' from 'range_all' as may be re-keymapped.
Remove inconsistent brackets from 'range_all'.
Change 'v_range' to 'view_range'.
Add 'pos = ' before co-ordinates.
Add spaces around '=' in yaw display.
Remove brackets from around 'yaw' and 'seed'.
Move 'pointing_at' to 3rd line.
Remove 'param1' (0 for all solid nodes and unreadable for light sources due to
light bank encoding).
Remove file name of pointed node top tile (this also removes the need to get
ContentFeatures for the node, slightly improving performance).
Replace quotes around node data with brackets, looks better and more consistent.
Add 'guitext3' for third line.
Use 'setVisible' for all 3 lines to control the setting of each text rectangle.
Improve logic of 3rd line to only run code it needs to depending on whether
pointing data is avaialble and whether node is not 'ignore' and not 'unknown'.
* New TOCLIENT_CHAT_MESSAGE packet
* Rename old packet to TOCLIENT_CHAT_MESSAGE_OLD for compat
* Handle TOCLIENT_CHAT_MESSAGE new structure client side
* Client chat queue should use a specific object
* SendChatMessage: use the right packet depending on protocol version (not complete yet)
* Add chatmessage(type) objects and handle them client side (partially)
* Use ChatMessage instead of std::wstring server side
* Update with timestamp support
Fix taking damage caused by sneaking over a nodebox gap.
Fix strange behaviour on stair nodeboxes.
Enable jumping from node edges while sneaking.
Enable movement around corners while sneaking on a 1-node-high groove in a wall.
Add 'biome_zero_level' argument to 'generateBiomes()', 'deco_zero_level'
argument to 'placeAllDecos()' and 'ore_zero_level' to 'placeAllOres()'
to allow mapgens to vertically shift the registered biomes, decorations
and ores per-mapchunk.
Will also allow many realm possibilities in future mapgens.
Useful for underwater plants.
Node consists of a base cube plus a plantlike extension that can pass through
liquid nodes above without creating air bubbles or interfering with liquid flow.
Uses paramtype2 'leveled', param2 defines height of plantlike extension.
This commit introduces Raycast, a Lua user object, which can be
used to perform a raycast on the map. The ray is continuable, so one can
also get hidden nodes (for example to see trough glass).
Fixes issue #3576
* Clouds now take camera position as 3D, not 2D
* Cloud grid filling extracted to gridFilled method
* Clouds detect whether camera is inside cloud
* Camera in cloud changes fog by overriding sky colors
with cloud color
* Sun, moon and stars can be temporarily disabled
with setBodiesVisible
* Disabling fog also disables all "inside cloud" behaviors
Allow `core.copy_dir` (main menu API) to copy directories from a
non-Minetest location. The check to disallow copying to non-Minetest
locations is retained.
* Irrlicht cleanup: cleanup various object to use RenderingEngine
* CAO doesn't need scenemanager in addToScene
* Camera doesn't need VideoDriver pointer or SceneManager in constructor
* Hud doesn't need driver & scene manager in constructor
* Hud doesn't need scenemanager pointer
* Tile.h doesn't need IrrlichtDevice header (just SMaterial)
* WieldMeshSceneNode: only take scene, we always use scene root node as parent
* Load client-side mods into memory before executing them.
This removes the remaining filesystem access that client-sided mods had and it will hopefully make then more secure.
* Lua Virtual filesystem: don't load the files into memory just scan the filenames into memory.
* Fix the issues with backtrace
* fix most of the issues
* fix code style.
* add a comment
Commit cad10ce3b7 altered the parameter
'float_mount_height' but was missing the necessary line in the constructor
to get the altered value from 'params'.
Fixes 3D floatland terrain generating everywhere.
* MSVC: Fix '/std:c++11' is not a valid compiler option
* MSVC/MINGW: Define 'WIN32_LEAN_AND_MEAN' for the whole project
In some obscure cases 'Windows.h" got includet before that definition, which leaded to compilation warnings+errors
* MSVC: '/arch:SSE' is only available for x86
* MSVC: Fix float conversation
* MSVC/MINGW: use winthreads on Windows
* MSVC: 'USE_CMAKE_CONFIG' might be already definied by CMake build system
* MSVC: Use all available cpu cores for compiling
* Add missing include ctime and use std::time_t
* Add Device3D class which will contain IrrlichtDevice interface
move getSupportedVideoDrivers to Device3D
Add Device3D singleton & use it in various places
Rename Device3D to Rendering engine & add helper functions to various device pointers
More singleton work
RenderingEngine owns draw_load_screen
move draw functions to RenderingEngine
Reduce IrrlichtDevice exposure and guienvironment
RenderingEngine: Expose get_timer_time() to remove device from guiEngine
Make irrlichtdevice & scene manager less exposed
* Code style fixes
* Move porting::getVideoDriverName, getVideoDriverFriendlyName, getDisplayDensity, getDisplaySize to RenderingEngine
Fix XORG_USED macro -> RenderingEngine + create_engine_device from RenderingEngine constructor directly
* enum paralax => enum parallax
The 'absheight' flag was added years ago for the floatlands of 'indev'
mapgen (now deleted). The feature mirrored all ore placement around y = 0
to place ores in floatlands.
In MTG we now use dedicated ore registrations for floatlands.
The feature is crude, inflexible, problematic and very rarely used, it
also makes ore vertical range code more complex.
Minetest 0.5 is a good chance to remove the feature.
The flag itself remains to not break flag values.
The 'absheight' flag was added years ago for the floatlands of 'indev'
mapgen (now deleted). The feature mirrored all ore placement around y = 0
to place ores in floatlands.
In MTG we now use dedicated ore registrations for floatlands.
The feature is crude, inflexible, problematic and very rarely used, it
also makes ore vertical range code more complex.
Minetest 0.5 is a good chance to remove the feature.
The flag itself remains to not break flag values.
Some settings of paramters can cause mgv7 variables to be -inf, nan or -nan.
This can cause massive vertical columns of water to appear above sea level.
As with 'large_cave_depth', lava depth was previously a fixed y value and
therefore incompatible with the ability to shift terrain vertically.
Add 'lava_depth' mapgen parameter to mgflat, mgfractal, mgv5, mgv7.
The value cannot be fixed because we can shift terrain vertically.
This also makes these mapgens consistent with mgflat and mgvalleys which
have 'large_cave_depth' parameters.
When adding items to an empty ItemStack, limit the number of items taken
based on the maximum stack size in the item description.
Likewise, when checking whether items will fit into an empty ItemStack,
only absorb as many items as are allowed in a single stack and return the rest.
* Automatic item and node colorization
Now nodes with a palette yield colored item stacks, and colored items
place colored nodes by default. The client predicts the colorization.
* Backwards compatibility
* Use nil
* Style fixes
* Fix code style
* Document changes
Previously, the carving of rivers was disabled above 'shadow_limit' even if
floatlands were disabled. This caused rivers to be unnecessarily disabled if
mapgen was customised to have surface level above y = 1024.
Previously, maximum spawn level was set to 'water_level + 16'. This would result
in spawn search failing if terrain had been customised to be much higher than
'water_level' at all points.
Also raise spawn level by 1 node to avoid spawning half-buried in a biome 'dust'
node such as 'default:snowblock'.
* C++11 patchset 10: continue cleanup on constructors
* Drop obsolete bool MainMenuData::enable_public (setting is called with cURL in server loop)
* More classes cleanup
* More classes cleanup + change NULL tests to boolean tests
* C++11 patchset 9: move hardcoded init parameters to class definitions
C++11 introduced the possibility to define the default values directly in class definitions, do it on current code
Also remove some unused attributes
* CollisionInfo::bouncy
* collisionMoveResult::collides_xy
* collisionMoveResult::standing_on_unloaded
* Clouds::speed
* More constructor cleanups + some variables removal
* remove only write guiFormSpecMenu::m_old_tooltip
* move header included inside defintions in genericobject.h
* remove some unused since years exception classes
* remove unused & empty debug_stacks_init
* remove unused & empty content_nodemeta_serialize_legacy
* remove forgotten useless bool (bouncy) in collision.cpp code
Previously, when removing decorations we searched upwards and removed until we
found air or water. However, the node above the decoration can be 'ignore' if
a stacked decoration extends into the volume above the mapchunk. The result
could be a problematic column of air placed in the volume of 'ignore'. The
unnecessary placing of air also slows the function.
Add a check for 'ignore' nodes when removing decorations.
Recently we started to remove decorations if the dirt below was flowed away,
but this did not check for stacked decorations, causing them to have only
their lowest node removed.
Also, placed mud could partially bury stacked decorations.
Remove 'old_is_water' bool which on testing is never true.
Add new function 'moveMud()' to reduce indentation.
Remove stacked decoration nodes above a removed decoration.
Remove stacked decorations partially buried in placed mud.
thread_local permits to limit variable lifetime to thread duration. Use it on each setting place which uses static to cache variable result only for thread lifetime. This permits to keep the same performance level & reconfigure server from MT gui in those various variables places.
Add thread_local to undersampling calculation too.
- Allow lua to chose whatever directories or files can be selected
- Fix selecting directories
- Rename dialog to `guiPathSelectMenu` from `guiFileSelectMenu`
- Rename lua function for opening the menu from `show_file_open_dialog` to `show_path_select_dialog`
- Remove duplicate code and fix code style.
Related changes
- fix `clang-format` whitelist.
- Regenerate minetest.conf.example
Previously, findSpawnPos() did not take the 'mapgen_limit' setting into account,
a small limit often resulted in a spawn out in the void.
Use the recently added 'calcMapgenEdges()' to get max spawn range through a new
mapgenParams function 'getSpawnRangeMax()'.
Previously, when a player respawned into a world, 'objectpos_over_limit()' was
used as a check, which was inaccurate.
Use the recently added 'saoPosOverLimit()' to get exact mapgen edges.
Also fix default value of 'm_sao_limit_min'.
These code be generated by CSM, a modded client or just copy and pasted by the player.
Changes
- Update configuration example and setting translation file.
- Remove colour codes before logging chat.
- Add setting to remove colour codes before processing the chat.
C++11 implement function deleting, it's generally used to prevent some object copy
In script API use this function removal on ScriptApiBase instead of ScriptApiClient/Server/MainMenu, this affect all ScriptApis
Move DISABLE_CLASS_COPY with constructor, the deleted function permit to replace function in its original place
* Have the server send the player list to the client
Currently the client generates the player list based on the Client active object list, the issue with this is that we can't be sure all player active objects will be sent to the client, so this could result in players showing up when someone run `/status` but auto complete not working with their nick and CSM not being aware of the player
* Move GCC to GCC 6 & GCC 7
* Move Clang to Clang 3.6 & Clang 4.0
* LINT moves from Clang 3.9 to Clang 4.0
* Move XCode 7.3 to 8.0
* Use more travis tricks to install compilers instead of adding complexity to our build script
* Clang format fixes on checked files (compat Cpp11 instead of Cpp03)
* Mingw GCC update from 4.8.4 to 5.3 (Ubuntu Xenial)
* Drop mingw cmake generated files and add them to gitignore
* LuaEntitySAO: Remove beyond outermost mapchunk edges
Based on a commit by, and with help from, nerzhul.
Add 2 functions to class Mapgen:
A function to calculate actual mapgen edges, called from the Mapgen constructor.
A function called indirectly from content_sao.cpp per entity step to check SAO
position is within mapgen edges.
* Calculate borders from params not mapgen, which is not available everytime
* Use only one label instead of two for the soundText, this permit to ensure both label & values are aligned
* Add '%' character too, to reflect it's a percentage volume
* Remove rect on regenerateGui (upper part) which shadows outer part and which is not needed outside of the DesiredRect affectation
Fix issue #5837
* Enhance ABM performance a little bit by removing two std::set copy
* ActiveBlockModifier::getTriggerContents now returns a const ref
* ActiveBlockModifier::getRequiredNeighbors now returns a const ref
* ActiveBlockModifier::getRequiredNeighbors is now purely virtual
* Little code style fix
Mudflow of a neighbouring mapchunk extends into a mapchunk's edge, and could
remove 'dirt with grass' from under a decoration, creating unsupported
decorations.
Remove any decoration above if a 'dirt with grass' node is removed by mudflow.
sapier
paramat
Loïc Blot
Loic Blot
SmallJoker
you
Dániel Juhász
Nathanaël Courant
Ben Deutsch
rubenwardy
Ekdohibs
adrido
Pavel Puchkin
stujones11
Jens Rottmann
Vitaliy
Wuzzy
SmallJoker
TeTpaAka
Fixer
Juozas
Thomas--S
Lars Hofhansl
kilbith
rubenwardy
Elijah Duffy
vlapsley
Vaughan Lapsley
Vincent Glize
Jean-Patrick Guerrero
red-001
Jesse McDonald
Wuzzy
Ezhh
Zeno-
Rui
ShadowNinja
QrchackOfficial
DS
Casimir
