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* Decoration API: Add lightweight ability to have complete coverage (#7456)Paramat2018-06-24
| | | | | | | | | | | | | | When the noise value or fill_ratio >= 10.0 complete coverage is enabled. This disables random placement to avoid redundant multiple placements at one position. Instead, 1 decoration per surface node is placed by looping across each division. '10' was chosen as this is the fill_ratio that previously created very near complete coverage. The complete coverage feature therefore integrates smoothly when noise is used for variable decoration density. 'fill_ratio = 10' should be used by modders who want a decoration placed on every surface node. Compared to before such a decoration placement will be 10 times faster.
* Biome API: Fix absent water decorations and dust, in deep water (#7470)Paramat2018-06-21
| | | | | | | | | | | | Previously, the biomemap was 'BIOME_NONE' for a mapchunk column if a stone surface was not found in it, causing water surface decorations and water surface dust to fail. Store the biome ID of the biome calculated at a water surface and add it to the biomemap if the biomemap is 'BIOME_NONE' for the mapchunk column. The biome calculated at a stone surface still has priority for the biomemap entry, as it should. Edit an incorrect comment.
* Biome dust: Revert fix that added dust to mod structures (#7464)Paramat2018-06-19
| | | | | | | | | Revert commit 99143f494711034068685b6ee845ce19fa09d7d9 and commit f4ca830abe1aa22875c99b31bf2ee56e26f83f05. These commits caused biome dust to be applied even when there was no core mapgen terrain in a mapchunk column. So the dust, which overgenerates, then appeared on structures added by mods in 'on_generated', such as floatlands, asteroids or above-surface realms.
* Mapgen flags: Add 'biomes' global mapgen flag (#7355)Paramat2018-06-08
| | | | | | | | | Previously the only way to disable biomes was to 'clear' the registered biomes in a mod, but this method causes large amounts of unnecessary processing: 1. Calculation of 4 2D noises. 2. Looping through all nodes of a mapchunk replacing nodes with identical nodes. The new flag disables those operations.
* Biome dust placement: Improve comments, re-order some linesParamat2018-06-04
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* Biomemap: Simplify code of recent commit (#7398)Paramat2018-06-02
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* Biomemap: Avoid empty biomemap entry to fix failing biome dust (#7393)Paramat2018-06-02
| | | | | | | | | | | | 'generateBiomes()' constructs the biomemap as it generates biomes. The biome calculated at first stone surface encountered is added to the biomemap. Previously, if no stone surface was encountered in a mapchunk column the biomemap was left empty for that (x, z) position, causing biome dust and water surface decoration placement to fail. If at the base of a mapchunk column the biomemap is empty, add the currently active biome to the biomemap, or if biome is NULL calculate it for this position and add it to the biomemap.
* Mgv7: Avoid rivergen removing mod-placed nodes when overgenerating (#7388)Paramat2018-05-31
| | | | | Only allow river generation to replace c_stone. This also acts as an optimisation by being placed before canyon shape calculation.
* Vein ore: Fix bug caused by changing perlinmap Y size (#7371)Paramat2018-05-24
| | | | | | | | | | Because vein ore uses 3D noise (all the other ores use 2D noise) the perlinmap Y size can be different in different mapchunks when close to the ore Y limits. Previously this caused bugs in the vein structure because changes in perlinmap Y size did not recreate the noise objects. Delete and recreate the noise objects with the new Y size if Y size has changed.
* Schematic decorations: Fix placement bug when centred and rotated (#7365)Paramat2018-05-24
| | | | | | Previously, the centering caused by the 'place center x/z' flags did not take rotation into account. So schematics with unequal X and Z dimensions were incorrectly placed. The bug was hidden for schematics equal in X and Z dimensions.
* Dungeons: Fix duplication of y limit parameters (#7359)Paramat2018-05-20
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* Vertical biome blend: Tune PRNG seed for finer detail (#7329)Paramat2018-05-14
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* Mgv7: Code cleanup (#7299)Paramat2018-05-07
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* Cavegen: Allow small RandomWalk caves to generate beyond mapchunk borderParamat2018-05-04
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* Mapgen caves: Re-order generation to fix cavern bugParamat2018-04-29
| | | | | | | Previously, caverns confused tunnel generation causing biome top and filler nodes to appear in caverns. Split 'generateCaves()' into 2 functions to separate tunnel and large randomwalk cave generation. In each mapgen re-order cave generation to generate tunnels before caverns.
* Biome-defined cave liquids: Use faster biome calculationparamat2018-04-26
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* Biome-defined dungeon nodes: Use faster biome calculationparamat2018-04-26
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* Dungeons: Mostly fix missing stair nodesParamat2018-04-25
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* Mgvalleys: Code cleanupParamat2018-04-24
| | | | | | | | | | | Split some long lines. Edit comments. Remove unnecessary comments and unnecessary commented-out code. Use std::fmax/fmin instead of MYMAX/MYMIN. Remove scope-limiting braces. Consistently define literals as floats, except in noise parameters. Cleanup literals in noise parameters. Remove unnecessary 'near_cavern' line. Reduce max spawn y to be consistent with other mapgens.
* Mgvalleys: Use shared tunnel / cavern code instead of internalParamat2018-04-21
| | | | | | | | | | | | | | | | Caverns first appeared in mgvalleys and were later added to other mapgens as shared code. Now this shared code can replace mgvalley's internal cavern code. Also use shared tunnel code instead of internal code. Changes to mapgen that will affect existing worlds (mgvalleys is not stable): Single lava and water sources not added in tunnels. Previous caverns are unchanged but an equal number of new ones are added at a distance from the previous. From y = -256 to 192 nodes below, where the caverns taper at their upper limit, they will have a slightly different shape as the taper is now linear.
* Cave liquids: Use a more precise point for calculating biomeParamat2018-04-21
| | | | Use the centre point of the route being carved for a more precise match between cave liquids and biome.
* Node resolver: Make error on fallback optional, disable for mapgen aliasesParamat2018-04-20
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* Cavegen: Fix variable typo that broke mgvalleys large cave distribution (#7249)Paramat2018-04-17
| | | | | Fix elusive 5 year old bug that caused mgvalleys large caves to be flat and limited to mapchunk borders. Error was fixed 2 years ago in 'CavesV6' but not in 'CavesRandomWalk'.
* Biome API / dungeons: Add biome-defined dungeon nodesParamat2018-04-07
| | | | | | | | | | Add new biome fields 'node_dungeon', 'node_dungeon_alt', 'node_dungeon_stair'. If 'node_dungeon' is not defined dungeons fall back to classic behaviour. Remove messy and imprecise dungeon material code from 'generateBiomes()'. Code deciding dungeon materials is now in 'generateDungeons()' and uses the biome at mapchunk centre for more precision. Remove hardcoded 'MG_STONE' types as long intended.
* Mgcarpathian: Fix spawn level calculation (#7212)Paramat2018-04-06
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* Mgcarpathian: Remove insignificant 'base' noise variation (#7209)Paramat2018-04-05
| | | | Was only +-1 node over a scale of thousands of nodes. Replace with 'base_level' parameter value.
* Biome API / cavegen: Add definable cave liquid for a biome (#7192)Paramat2018-04-05
| | | | Add 'node_cave_liquid' as a new field in biome registration. If field is absent cave liquids fall back to classic behaviour.
* Fix various clang-tidy reported performance-type-promotion-in-math-fnLoïc Blot2018-04-03
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* Fix many issues reported by clang-tidy (#7189)Loïc Blot2018-04-02
| | | | | | | | | | | * Fix many issues reported by clang-tidy We have many issues in code related to some performance to float <-> double. Clang-tidy reported it in performance-type-promotion-in-math-fn I fixed many of them. It's not ready for a promote to blocking Also fix some value which should be const-ref
* Mgcarpathian: Mapgen loop optimisations. fabs() -> std::fabs()Paramat2018-03-29
| | | | | | | * Mgcarpathian: ZYX -> ZXY mapgen loop optimisation. * 'pow(n, 3)' to 'n * n * n' type optimisations. * fabs() -> std::fabs().
* Mapgen: Remove unused mgv7 code and some unused biometypesParamat2018-03-26
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* Biomes: Fix vertical biome blendparamat2018-03-16
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* Biome API: Add 'get_biome_name(biome_id)' APIparamat2018-03-11
| | | | Change name of default biome to a more suitable lowercase 'default'.
* VoxelArea: add_{x,y,z,p} must be staticLoic Blot2018-03-09
| | | | | Fix some documentations issues Use getNodeNoCheck(v3s16, ...) in some cases instead of getNodeNoCheck(x, y, z, ...)
* Biomes: Add 'min_pos'/'max_pos' xyz biome limitsparamat2018-03-09
| | | | 'y_min' and 'y_max' are still accepted for compatibility.
* Generate Notifier: Clear events once after all 'on generated' functionsparamat2018-03-03
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* MapgenValleys: Fixed submarine valleys shapeGael-de-Sailly2018-03-03
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* Place schematic (on vmanip): Enable use of 'place center' flagsparamat2018-02-27
| | | | | | For 'place schematic' and 'place schematic on vmanip' APIs. Fix 'place center' code to properly centre schematics. Fix some comments.
* SAO limits: Allow SAOs to exist outside the set 'mapgen limit'paramat2018-02-26
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* Vertical biome blend: Tune blend patternsparamat2018-02-20
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* Dungeons: Add Y limits in all mapgensparamat2018-02-20
| | | | Preserve the upper limit used in mgvalleys.
* Dungeons: Avoid generation in multiple liquid nodes and 'airlike'paramat2018-02-13
| | | | | | | | | | | | | | Previously only 'mapgen water source' and 'mapgen river water source' were checked for. Games can use multiple liquid nodes defined for biomes, many of which will not be aliased to those 2 mapgen aliases, causing floating dungeons to generate in some liquids. Now we check for liquid drawtype instead, so can remove liquid nodes from dungeonparams. Also check for 'airlike' drawtype instead of 'CONTENT_AIR' to avoid generation in 'airlike' nodes in some rare situations. This will also be needed for when we add definable biome air nodes.
* Node definition manager refactor (#7016)Dániel Juhász2018-02-10
| | | | | | | | | * Rename IWritableNodeDefManager to NodeDefManager * Make INodeDefManager functions const * Use "const *NodeDefManager" instead of "*INodeDefManager" * Remove unused INodeDefManager class * Merge NodeDefManager and CNodeDefManager * Document NodeDefManager
* Biomes: Add 'get heat', 'get humidity', 'get biome data' APIsparamat2018-01-16
| | | | | 'get biome data' returns biome id, heat and humidity. Clean up nearby lines in lua_api.txt.
* Mapgen folder: Update and improve copyright information of filesparamat2018-01-15
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* Biomes: Add vertical biome blend (#6853)Paramat2018-01-05
| | | | Add 'vertical blend' parameter to biome registration that defines how many nodes above the biome's 'y max' limit the blend will extend.
* Mgv7 floatlands: Add exponent parameterparamat2018-01-03
| | | | | Allows more control over shape of floatland mountain terrain. Terrain shape is unchanged.
* Use std::vector instead of dynamic C-Array (#6744)adrido2017-12-10
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* Stratum ore: Add option for a constant thickness stratumparamat2017-11-19
| | | | | Add a 'stratum thickness' integer parameter, as an alternative to providing a 2nd noise parameter for thickness variation.
* Biome dust node: Only place on 'walkable' cubic non-liquid drawtypesparamat2017-11-17
| | | | | | No longer decide placement on 'buildable_to' parameter. Dust nodes only look acceptable placed on cubic nodes. Modders may not want to make their plantlike decorations 'buildable_to'.