60 commits

Author	SHA1	Message	Date
Matthias Schiffer	fd4773c8ca	treewide: replace license headers with SPDX-License-Identifier	2021-11-17 12:07:56 +01:00
Matthias Schiffer	38d8bd0738	Chunk: replace withDepth argument with extensible flags field	2021-08-24 21:03:18 +02:00
Matthias Schiffer	9ac3b00b6e	Make region iteration more efficient for sparse worlds ... Do not iterate over each region coordinate in the bounding box. Closes #12	2021-02-13 11:06:30 +01:00
Matthias Schiffer	3ec83c8cf8	Compare file contents with old data before writing ... Do not writeoutput files when their content hasn't changed. This saves time for incremental generation (as compressing a PNG takes much longer than decompressing it) and avoids modification timestamp updates that might trigger subsequent generation steps.	2020-06-20 15:01:52 +02:00
Matthias Schiffer	98e21236d9	Do not generate light data for invisible blocks	2020-06-20 14:48:26 +02:00
Matthias Schiffer	03ae9cf302	Exclude unpopulated chunks from biome averaging ... Avoids weirdly colored stripes at the edges of the map.	2020-06-20 12:17:24 +02:00
Matthias Schiffer	eb831608e0	Add smooth transitions between biomes ... Simliar to the way biome transitions are rendered in Minecraft itself, add smoothing by averaging biome-based colors over all biome values with distance ≤3 (1-norm).	2020-06-20 12:15:32 +02:00
Matthias Schiffer	623d70ec9e	More preparation for biome smoothing	2020-06-20 11:40:29 +02:00
Matthias Schiffer	19ef022a67	Biome: return FloatColor for block colors	2020-06-20 11:40:29 +02:00
Matthias Schiffer	50f798f89e	Do not store biome in block structure ... Use biome data from biome map.	2020-06-20 11:40:29 +02:00
Matthias Schiffer	a3cf5edda4	Read biome maps when iterating regions	2020-06-20 11:40:29 +02:00
Matthias Schiffer	072d664199	Separate top layer search from block data retrieval	2020-06-20 11:40:29 +02:00
Matthias Schiffer	569d0f1198	Pass region indices as int instead of size_t ... Region indices can be negative.	2020-06-20 11:40:29 +02:00
Matthias Schiffer	4f7663f82f	Merge doRegion{,Biome}() into makeBiome()/makeMap()	2020-06-20 11:40:27 +02:00
Matthias Schiffer	2f0d1892f4	Split getModTime() out of checkRegion()	2020-06-20 00:58:08 +02:00
Matthias Schiffer	f539d668eb	Collect biome data ... We store the biome data as grayscale images, as biome indices are represented as bytes and we get PNG compression for free.	2020-06-20 00:58:08 +02:00
Matthias Schiffer	dc97c4a8c1	PNG: add support for grayscale images without alpha	2020-06-20 00:58:08 +02:00
Matthias Schiffer	4f49434dbf	Clean up doLevel()	2020-06-19 20:06:44 +02:00
Matthias Schiffer	0245c5c926	Add message before updating mipmaps	2020-06-19 19:09:40 +02:00
Matthias Schiffer	d9af9cbc9d	Catch normal runtime errors instead of exiting with SIGABRT	2019-12-14 22:16:41 +01:00
Matthias Schiffer	0bdf249307	Add biome color computation ... Rather than using fixed values for all biomes, generate grass and foliage colors based on (height-dependent) temperature and rainfall parameters. This changes a lot of colors; in general, the new colors should be closer to the actual Minecraft rendering. It also fixes a few colors that were completely off (like in the badlands biomes) and adds the MC 1.13 biomes (which were rendered in black). Some of the newer biomes (warm/cold/... oceans) don't have proper parameters yet, and we do not derive the water color from the biome yet. Fixes #1.	2018-11-08 17:49:28 +01:00
Matthias Schiffer	a3246d98c0	Adjust for minor API differences on Windows	2018-07-26 23:18:56 +02:00
Matthias Schiffer	de04cce993	World/Block: return colors as struct instead of uint32_t ... Gets rid of a useless byte switch, and removes the arpa/inet.h include, which is not available on Windows.	2018-07-26 23:18:55 +02:00
Matthias Schiffer	4e3a9736b6	World/Block: remove useless blockLight accessor	2018-07-22 16:59:18 +02:00
Matthias Schiffer	c082c8800c	Separate splitting of regions into chunks and actual parsing of chunk structure	2018-07-20 23:49:51 +02:00
Matthias Schiffer	292f4f4f3b	Don't rely on utimensat() ... utimensat() does not work on all filesystems, in particular on Windows.	2017-06-13 16:39:17 +02:00
Matthias Schiffer	1e14dabc2d	Fix definition of timespec >= operator	2015-02-06 23:06:11 +01:00
Matthias Schiffer	d73c8b930b	Include cleanup ... Also remove all uses of unistd.h by replacing unlink with std::rename	2015-02-06 19:51:20 +01:00
Matthias Schiffer	fb81ea7d60	Make light layer darker	2015-02-06 17:56:59 +01:00
Matthias Schiffer	e4b1919ba8	Use heap memory for image buffers	2015-02-04 09:00:34 +01:00
Matthias Schiffer	4d9f29afab	Add mipmap support to allow zooming out	2015-02-03 20:15:58 +01:00
Matthias Schiffer	0162c236fa	Nicer timespec operations	2015-02-03 18:39:58 +01:00
Matthias Schiffer	45a1915006	Refactor image creation	2015-02-03 15:02:21 +01:00
Matthias Schiffer	0bd8e211e2	Also unlink light tmpfile on errors	2015-02-03 14:19:19 +01:00
Matthias Schiffer	9e0bbcf685	Generate light layer	2015-02-03 13:13:12 +01:00
Matthias Schiffer	e1b3347da5	Start mipmapping infrastructure	2015-02-03 12:42:33 +01:00
Matthias Schiffer	1d3db43d29	Refactor PNG writing	2015-02-02 19:29:37 +01:00
Matthias Schiffer	b46c5de3ac	Free PNG structs after writing	2015-02-02 18:52:33 +01:00
Matthias Schiffer	34857eabbc	Add spawn coordinates	2015-02-02 18:33:21 +01:00
Matthias Schiffer	db59b73856	Refactor info generation	2015-02-02 17:56:43 +01:00
Matthias Schiffer	fd4ce45885	Generate info file	2015-02-02 05:13:07 +01:00
Matthias Schiffer	8bdbfd3ec0	Factor out filename check	2015-02-02 04:47:40 +01:00
Matthias Schiffer	213124ec57	Output "normal" messages to stdout ... This makes it easier to filter for the errors	2015-02-02 03:53:49 +01:00
Matthias Schiffer	75671b4b96	Catch exceptions for single regions	2015-02-02 03:38:49 +01:00
Matthias Schiffer	a3d6648fa6	Workaround for old libraries without regex support	2015-02-02 03:33:43 +01:00
Matthias Schiffer	bedd81dce6	Don't explicitly include setjmp ... libpng does this for us.	2015-02-02 03:20:25 +01:00
Matthias Schiffer	58adcc4c15	Skip unchanged regions	2015-02-02 03:06:22 +01:00
Matthias Schiffer	248b9e319d	Convert all regions with one call	2015-02-02 02:25:56 +01:00
Matthias Schiffer	8db3a5b94f	Use DIM constant as PNG dimension	2015-02-02 01:47:16 +01:00
Matthias Schiffer	8c1629af42	Change region reader to a visitor pattern ... Not keeping the whole region in memory reduces the needed space to less than 5MB (from about 140).	2015-02-02 01:41:17 +01:00