kwolekr
8ed467d438
PcgRandom: Fix/improve documentation
2016-06-04 02:16:06 -04:00
kwolekr
dfbdb5bcd7
Change internal type for seeds to s32
...
This fixes value truncation (and therefore incompatibility) on platforms
with an LP32 data model, such as VAX or MS-DOS.
2016-06-04 01:51:44 -04:00
Jun Zhang
a78dd7f2b6
Fix spelling of noise_threshold
2015-12-06 11:38:03 +01:00
kwolekr
d198e420ec
Fix Noise compiled under clang >= 3.7.x with -O2 or higher
...
When compiled with optimizations, the most recent versions of clang seem
to 'optimize' out a crucial "and %reg, 0x7FFFFFFF" instruction in noise2d(),
probably because it somehow assumed the variable n would never become greater
than that amount.
Indeed, signed integer underflow is undefined behavior in C and C++, so while
this optimization is "correct" in that sense, it breaks lots of existing code.
Solved by changing n to an unsigned type, making behavior well-defined.
2015-11-01 11:16:18 -05:00
est31
738fbc66d0
Fix Lua PcgRandom
...
Before, this lua code led to a crash:
local pcg = PcgRandom(42)
local value = pcg:next()
This was because if you called s32 PcgRandom::range(min, max) with the
minimum and maximum possible values for s32 integers (which the lua
binding code did), u32 PcgRandom::range(bound) got called with 0 as the
bound. The bound however is one above the maximum value, so 0 is a "special"
value to pass to this function. This commit fixes the lua crash by
assigning the RNG's full range to the bound 0, which is also fits to the
"maximum is bound - 1" principle, as (u32)-1 is the maximum value in the
u32 range.
2015-08-12 11:36:22 +02:00
Loic Blot
aab7c83d02
Remove some old dead code. Fix some Clang warnings in SRP (ng->N... will
...
always evaluate to true.
2015-07-24 21:48:02 +02:00
kwolekr
8eb272cea3
Misc. minor fixes
2015-07-10 15:58:57 -04:00
kwolekr
28b2476b11
Noise: Fix interpolation at negative coordinates
2015-05-17 00:04:51 -04:00
kwolekr
11a96e4901
Add -Wsign-compare for Clang builds and fix some signed/unsigned compiler warnings
2015-05-16 20:15:03 -04:00
kwolekr
5d1d7c17ea
Noise: Make buffer size parameters unsigned
2015-05-15 16:20:30 -04:00
kwolekr
37ca3212ee
Fix MSVC compatibility
...
Make sure to include random unittests in android builds, too
Use SWAP() macro
Ensure that negative ranges are tested as well in random unittests
2015-04-29 13:20:01 -04:00
kwolekr
415167b228
Noise: Fix PcgRandom::randNormalDist() when range contains negative numbers
...
This fixes an issue with erroneous float-to-int rounding that resulted in
truncation toward 0, causing a biased distribution.
2015-04-27 04:05:25 -04:00
kwolekr
cd1d625ab2
Replace PRNG assertions with PrngException
2015-04-27 01:24:37 -04:00
kwolekr
943c6e523e
Noise: Add noise unittests
...
Fix buffer size calculation for lacunarity < 1.0
Add guard against absurd noise parameters
2015-04-21 13:05:14 -04:00
kwolekr
687d969c9c
Noise: Correct noise objects created with invalid dimensions
2015-04-19 21:39:10 -04:00
kwolekr
9fc2b93d9f
Fix endianness inconsistency with PcgRandom::bytes()
2015-03-23 22:23:16 -04:00
kwolekr
761b127060
Fix some loose ends from 3993093f
2015-03-22 02:58:54 -04:00
kwolekr
3993093f51
Add support for the PCG32 PRNG algo (and associated script APIs)
2015-03-22 00:48:08 -04:00
kwolekr
dcbf1b3ce5
Noise: Don't assume Noise is used for 2D unless gradientMap2D is actually called
2014-12-14 00:18:31 -05:00
kwolekr
fb80a7c111
Clean up Noise macros
2014-12-11 02:53:10 -05:00
kwolekr
16baed0467
Noise: Automatically transform noise maps if needed
2014-12-10 23:35:37 -05:00
kwolekr
fb2bc956b1
Noise: Create a deep copy of NoiseParams
2014-12-10 00:37:09 -05:00
kwolekr
941d000fc6
Noise: Update Noise::resizeNoiseBuf to account for lacunarity not equal to 2
2014-12-09 00:50:58 -05:00
kwolekr
2a7c6d27b3
Optimize noise implementations
2014-12-08 03:26:29 -05:00
kwolekr
2fd3d52020
Add flags and lacunarity as new noise parameters
...
Add 'absolute value' option to noise map functions
Extend persistence modulation to 3D noise
Extend 'eased' option to noise2d_perlin* functions
Some noise.cpp formatting fixups
2014-12-07 21:59:32 -05:00
kwolekr
25945dc539
noise: Throw exception on noise allocation failure
2014-11-29 16:52:45 -05:00
kwolekr
fc9521874c
Add eased 3d point-value noise functions
2014-11-12 23:49:45 -05:00
paramat
92981b2fee
Add mgv5. New noise code, uses biome API. Eased 3d noise for terrain, caves, blobs
2014-11-08 21:37:26 +01:00
kwolekr
6ddf458504
Change license of noise implementation to Simplified BSD
2014-10-27 21:17:07 -04:00
kwolekr
b994a7af13
Add support for eased 3d noise
2014-10-27 02:02:38 -04:00
Kahrl
4e1f50035e
Omnicleanup: header cleanup, add ModApiUtil shared between game and mainmenu
2013-08-14 21:03:33 +02:00
kwolekr
8ec3fc35c6
Add Mapgen V7, reorganize biomes
2013-04-07 00:50:21 -04:00
kwolekr
d31f07bd4b
Fix most warnings, re-fix MSVC compile error
2013-02-26 01:57:59 -05:00
Sfan5
6d0ea26c2d
Update Copyright Years
2013-02-24 20:15:24 +01:00
PilzAdam
497ff1ecd6
Change Minetest-c55 to Minetest
2013-02-24 18:49:03 +01:00
kwolekr
77dbad72f7
Fix and improve noise map functions
2013-02-06 01:12:36 -05:00
kwolekr
631a835e07
Finish and clean up mapgen configuration
2013-01-21 21:41:37 +02:00
kwolekr
d5029958b9
Readded and optimized mapgen V6
2013-01-21 21:41:37 +02:00
kwolekr
bddd5f2b98
Cleaned & enhanced noise object management
2013-01-21 21:41:37 +02:00
kwolekr
96898c1794
Add initial Lua biomedef support, fixed biome selection
2013-01-21 21:41:37 +02:00
kwolekr
11afcbff69
The new mapgen, noise functions, et al.
2013-01-21 21:41:33 +02:00
PilzAdam
b701f8a878
Replace pow() with multiplikation to improve speed
2012-11-02 16:24:57 +01:00
Perttu Ahola
037b259197
Switch the license to be LGPLv2/later, with small parts still remaining as GPLv2/later, by agreement of major contributors
2012-06-05 18:54:07 +03:00
Perttu Ahola
2bd2bdff08
updated noise stuff
2011-06-26 18:50:13 +03:00
Perttu Ahola
7538b4c620
New map generator added (and SQLite, messed up the commits at that time...) (import from temporary git repo)
2011-06-25 04:25:14 +03:00
Perttu Ahola
ffb1128951
tested out and commented out some new stuff for the terrain generator, to be used in the future.
2011-04-26 15:38:42 +03:00
Perttu Ahola
2e7b15fed3
mapgen work-in-progress
2011-03-02 02:00:11 +02:00
Perttu Ahola
9a22d02903
mapgen tweaking
2011-03-01 01:32:54 +02:00
Perttu Ahola
c8be58a65c
A third try on terrain generation. No trees yet.
2011-02-28 02:01:40 +02:00
Perttu Ahola
d9d0efdeed
fixed 3d noise and made 2d noise faster
2011-02-27 00:59:56 +02:00
