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* Caves: Fix shadowing of 'large_cave_depth' to avoid confusionparamat2019-11-23
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* Dungeons: Move duplicated y limit checks to generation functionparamat2019-11-23
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* Move duplicated mapgen parameters to class MapgenBasic (#9134)Paramat2019-11-19
| | | 'large_cave_depth', 'dungeon_ymin' and 'dungeon_ymax' are duplicated across many mapgens so should have been in class MapgenBasic from the start.
* Randomwalk cave liquids: Remove deprecated 'lava depth' parameter (#9105)Paramat2019-11-18
| | | | | | | | | Low-disruption first step towards removing the hardcoded cave liquid code. Since MT 5.0.0 cave liquids can be defined and located by biome definitions instead. In games that do not yet use biome definitions to define and locate cave liquids (MTGame does), lava will now appear below y = water_level - 256 instead of below 'lava depth' (usually y = -256). Therefore no change in most mapgens if using the default 'lava depth'.
* Randomwalk caves: Extend beyond mapchunk vertically also (#9094)Paramat2019-11-10
| | | | | Previously, randomwalk caves only extended beyond the mapchunk borders horizontally, preventing vertical overlap and interconnection.
* Tunnels: Completely disable generation when 'cave width' >= 10.0 (#9093)Paramat2019-11-09
| | | | | | | | | Previously, the only way to disable the 3D noise tunnels was to set 'cave width' > 1.0, however doing so did not disable the very intensive noise calculations or the generation loop. All the other types of cave generation (randomwalk caves, caverns) can already be independently and completely disabled. This feature is now needed more because the small randomwalk caves are now available for use as an alternative to the 3D noise tunnels.
* Randomwalk caves: Add parameters for number, proportion flooded. Allow small ↵Paramat2019-11-08
| | | | | | | | | | | | | | caves (#8928) Add mapgen parameters to set the range of the random number of randomwalk caves per mapchunk, and to set the proportion that are flooded with liquids. Default values are, for now, unchanged from the previous hardcoded values. Add parameters to allow small randomwalk caves Disabled by default for now as they have never been present in the non-mgv6 mapgens.
* Change some usages of "deprecated" to "obsolete" (#9062)random-geek2019-10-29
| | | | "Deprecated" means that something is still in use, but is unsupported and needs to be removed. "Obsolete" means it is already out of use.
* Randomwalk caves: Reduce 'insure' value from 10 to 2 (#9035)Paramat2019-10-13
| | | | | | | | | This value reduces how far randomwalk caves can extend into the mapchunk padding, to avoid 'out of voxelmanip' cave nodes which cause flattened cave walls. Testing shows that a value of 2 (instead of 10) is enough to make 'out of area' nodes extremely rare. Reducing this value results in a higher chance of overlap and connection with caves of neighbour mapchunks.
* Fix some reference counters (memleak) (#8981)SmallJoker2019-09-24
| | | | | Fix some reference counters (memleak) Map::dispatchEvent: Allocation safety using references
* Dungeons: Clean up parameters, improve structure variety (#8918)Paramat2019-09-14
| | | | | | | | | | | | | While preserving the general character of dungeon structure. Slightly increase the range of standard room horizontal size, while preserving the average horizontal size. Return to classic maximum large room size of 16x16x16. Make 1 in 4 dungeons have a 1 in 8 chance for each room being 'large', making multiple large rooms possible for the first time. Make 1 in 8 dungeons allow diagonal corridors, to make these a little more common. Make corridor width vary from 1 to 2, but forced to 2 if diagonal corridors are allowed, to make them passable. Add some comments.
* Dungeons: Remove non-functional 'projecting dungeons' setting (#8897)Paramat2019-09-08
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* Mapgen v6: Various mudflow code improvements and bugfixes (#8805)Paramat2019-08-24
| | | | | | | | | | | | | | | Calculate 'i' inside 'y' loop to avoid 'i' and 'y' becoming out of step due to the uses of 'continue'. Simplify calculation of 'p2d' when coordinates are inverted. Remove some unnecessary and unreliable 'index out of voxelmanip' checks. Move calculation of '&em' out of loops. For 'Loop further down until not air' code, use y coordinate to detect being out of voxelmanip, instead of checking index which did not detect that. Add and improve comments. Indent the 'for (;; y--) {' loop. Improve format and fix codestyle issues.
* Make Mapgen::spreadLight use a queue (#8838)DS2019-08-23
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* Mapgen v6: Fix mudflow iteration and iterate twice (#8795)Paramat2019-08-15
| | | | | | | | | | In MapgenV6::flowMud(), the previous implementation of coordinate inversion caused the 2 inverted mudflow iterations (out of the 3 iterations) to not loop over the area, so only 1 non-inverted iteration occurred. Fix this bug but only iterate mudflow twice, as mapgen v6 has only had 1 iteration for many years. There is now a good balance of 1 non-inverted iteration and 1 inverted iteration.
* Better F6 profiler (#8750)SmallJoker2019-08-13
| | | | | | | Update the profiler names to make more sense of what they actually represent Move the profiler code from header to its source file Use monospace font to align lines Format the statistics line to align better with surrounding values Refresh the profiler each 3 seconds (roughly)
* Mapgen Flat: Fix and improve getSpawnLevelAtPoint() (#8756)Paramat2019-08-06
| | | | | | Previously, this wrongly returned ground level (a position containing a solid node) as spawn level. Return ground level + 2 (+ 2 to spawn above biome 'dust' nodes). Improve codestyle and make more consistent with generateTerrain().
* Initialise 'seabed_height' to avoid compilation warning (#8715)Paramat2019-07-26
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* Re-order mapgens in mainmenu and 'all settings' mapgen selection (#8705)Paramat2019-07-25
| | | | | | v6 always last to discourage selection. Special mapgens flat, fractal, singlenode, next to last. Of these, singlenode last to discourage selection. Of the remaining, v5 last due to age, v7 first due to being the default.
* Mgfractal: Make non-fractal terrain optional (#8702)Paramat2019-07-25
| | | | | | Enabled by default. Only allow spawn on fractal, not on seabed terrain. Various codestyle and comment improvements.
* Document the deprecation of hardcoded cave liquids (#8692)Paramat2019-07-20
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* Dungeons: Make multiple large rooms possible (#8678)Paramat2019-07-16
| | | | | | | | | Re-add the random size range for large rooms. Remove 'first_room_large' bool. Add 'large_room_chance' parameter that can disable large rooms, specify 1 large room, or specify a chance for large rooms. If 1 or a chance is specified, the first generated room is large, to take advantage of the intersection checks that are done for the 1st room only.
* Move more dungeon parameter selection to mapgens (#8653)Paramat2019-07-09
| | | | | | | | | | Move 'num_dungeons' to 'DungeonParams'. Add new parameter 'num_rooms' to replace 'rooms_min' and 'rooms_max', so that the mapgen has complete control over the number of rooms. Add new bool 'first_room_large' so that the mapgen chooses this instead of a hardcoded 1 in 4 chance. Add new parameter 'room_size_large' to replace 'room_size_large_min' and 'room_size_large_max', so that the mapgen has complete control over this.
* Dungeongen: Remove most hardcoded dungeon nodes (#8594)Paramat2019-06-30
| | | | | | | | | | | | | | | Biome-defined dungeon nodes was added as a feature to MT 5.0.0. So now remove most of the hardcoded dungeon node code that assumes a game has stone, sandstone, desert stone, and no other stone types. If biome-defined dungeon nodes are not found, dungeon nodes fall back to the 'cobble' mapgen alias if present, if not present they fall back to biome-defined 'stone'. Remove now-unnecessary mapgen aliases from MapgenBasic. Non-mgv6 games now only need to define 3 to 5 mapgen aliases. Document dungeon parameters. Make c_lava_source fallback to c_water_source as both are used as cave liquids.
* Mapgen Carpathian: Add optional rivers (#7977)Paramat2019-06-19
| | | | | Rivers are disabled by default and will not be added to existing worlds. Rewrite getSpawnLevelAtPoint() to be simpler and more consistent with generateTerrain().
* Dungeons: Settable density noise, move number calculation to mapgens (#8473)Paramat2019-06-01
| | | | | | | | | | | | Add user-settable noise parameters for dungeon density to each mapgen, except V6 which hardcodes this noise parameter. Move the calculation of number of dungeons generated in a mapchunk out of dungeongen.cpp and into mapgen code, to allow mapgens to generate any desired number of dungeons in a mapchunk, instead of being forced to have number of dungeons determined by a density noise. This is more flexible and allows mapgens to use dungeon generation to create custom structures, such as occasional mega-dungeons.
* Allow multiple cave liquids in a biome definition (#8481)Paramat2019-05-18
| | | | | | | | | | | | | This allows games to specify biome cave liquids and avoid the old hardcoded behaviour, but preserves the ability to have multiple cave liquids in one biome, such as lava and water. When multiple cave liquids are defined by the biome definition, make each entire cave use a randomly chosen liquid, instead of every small cave segment using a randomly chosen liquid. Plus an optimisation: Don't place nodes if cave liquid is defined as 'air'
* Optimize random turns in dungeongen (#8129)Jozef Behran2019-04-07
| | | | | | It turns out there is no need to return the new value and preserve the old one in random_turn, the procedure can be made to modify the value in-place. This saves quite a bunch of parameter and return value copying.
* Fix commentsLoic Blot2019-03-31
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* mapgen: drop mapgen id from child mapgens.Loïc Blot2019-03-31
| | | | | | This id must be owned by the child mapgen and never be set to a misc value by a developer Also use nullptr in some places
* Dungeons: Do not remove nodes that have 'is_ground_content = false' (#8423)Paramat2019-03-26
| | | | | | | Like randomwalk caves, preserve nodes that have 'is_ground_content = false', to avoid dungeons that generate out beyond the edge of a mapchunk destroying nodes added by mods in 'register_on_generated()'. Issue discovered by, and original PR by, argyle77.
* Valleys mapgen code rewrite (#8101)Paramat2019-03-14
| | | | | | | | | | | | Shorter, simpler, clearer and more consistent with other mapgens, while preserving functionality. Base terrain shape is unchanged. With the 'vary river depth' option disabled, river surface level is unchanged. Behaviour of the 4 heat/humidity/river depth options is very slightly changed due to bugfixes and code cleanup (the mapgen is 'unstable'). Apply heat and humidity gradients above water_level instead of above y = 0.
* blitToVManip: Check out-of-bounds using node position not index (#8127)Paramat2019-01-25
| | | | | | | | | | | | | | Previously, when using 'place on vmanip' to add a schematic to a lua voxelmanip, if part of the schematic was outside the voxelmanip volume, the outside part would often appear in a strange place elsewhere inside the voxelmanip instead of being trimmed off. This was due to the out-of-bounds check checking the index. A position outside the voxelmanip can have an index that satisfies '0 <= index <= voxelmanip volume', causing the node to be placed at a strange position inside the voxelmanip. Use 'vm->m_area.contains(pos)' instead. Move index calculation to later in the code to optimise.
* Fix warnings about dungeongen.cpp memcpy() and unused variable in ↵Paramat2019-01-22
| | | | | | | | | | MapBlock::deSerializeNetworkSpecific() (#8122) * Fix warning about dungeongen.cpp memcpy() * Fix unused variable in MapBlock::deSerializeNetworkSpecific() * Fix unused variable a simpler way
* Fix Mapgen Valleys getSpawnLevelAtPoint() (#7756)Treer2018-10-03
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* Fix various code issues found by cppcheck (#7741)Paramat2018-09-23
| | | | | Mapgen Singlenode: Remove 'flags' that duplicates a 'class Mapgen' member. Dungeongen: Initialise 'MMVManip *vm' to 'nullptr'. Inventorymanager: Remove assignment error 'found = '.
* Change mapgen order to ores > dungeons > decorations (#7656)Paramat2018-08-20
| | | | | | | | | | | Previously dungeons > decorations > ores. Decorations depend on the node they are placed on, and ore types are increasingly able to place large continuous volumes of nodes, such as strata. Decorations are increasingly being used underground. The new order avoids a node being changed by ore generation after a decoration has been placed on it. The new order also avoids ores appearing in the walls of a dungeon if the wall nodes match the local stone node.
* Mgv5: Change tunnel parameters to those of other mapgens (#7641)Paramat2018-08-16
| | | | | Make tunnels wider and use the noise parameters of most other mapgens. All other underground features are already identical to all other non-mgv6 mapgens, this final change modernises and improves the tunnels.
* Fix build on gcc 5.0 (#7586)zeuner2018-07-26
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* Mgvalleys: Make river depth variation and humidity drop optional (#7532)Paramat2018-07-18
| | | | | | | | | | | Add 2 new mapgen flags to make river depth variation and humidity drop with altitude independently optional, instead of both being enabled by the 'humid rivers' flag. Simplify and clarify related code by removing a low priority optimisation regarding 't_heat'. Remove unnecessary optimisation bools and use spflags directly instead. Improve and fix documentation in settingtypes.txt. A few minor code cleanups.
* Cavegen: Fix errors when getting biome outside mapchunk (#7480)Paramat2018-06-26
| | | | | | | | | | Some cave segments are outside the mapchunk. Previously, biome was being calculated by a function that uses the noise maps. Points outside the mapchunk resulted in incorrect noise map indexes that were sometimes outside the noise map size, causing a crash. Use either noise maps or point noise calculations depending on point location.
* 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.