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Change internal type for seeds to s32

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This fixes value truncation (and therefore incompatibility) on platforms
with an LP32 data model, such as VAX or MS-DOS.
This commit is contained in:
kwolekr 2016-06-04 01:35:37 -04:00
parent 2060fd9cbe
commit dfbdb5bcd7
13 changed files with 68 additions and 54 deletions
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4
src/cavegen.cpp
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@ -35,7 +35,7 @@ static NoiseParams nparams_caveliquids(0, 1, v3f(150.0, 150.0, 150.0), 776, 3, 0
CavesNoiseIntersection::CavesNoiseIntersection(
INodeDefManager *nodedef, BiomeManager *biomemgr, v3s16 chunksize,
NoiseParams *np_cave1, NoiseParams *np_cave2, int seed, float cave_width)
NoiseParams *np_cave1, NoiseParams *np_cave2, s32 seed, float cave_width)
{
assert(nodedef);
assert(biomemgr);
@ -130,7 +130,7 @@ void CavesNoiseIntersection::generateCaves(MMVManip *vm,
CavesRandomWalk::CavesRandomWalk(
INodeDefManager *ndef,
GenerateNotifier *gennotify,
int seed,
s32 seed,
int water_level,
content_t water_source,
content_t lava_source)

6
src/cavegen.h
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@ -41,7 +41,7 @@ class CavesNoiseIntersection {
public:
CavesNoiseIntersection(INodeDefManager *nodedef, BiomeManager *biomemgr,
v3s16 chunksize, NoiseParams *np_cave1, NoiseParams *np_cave2,
int seed, float cave_width);
s32 seed, float cave_width);
~CavesNoiseIntersection();
void generateCaves(MMVManip *vm, v3s16 nmin, v3s16 nmax, u8 *biomemap);
@ -83,7 +83,7 @@ public:
s16 *heightmap;
// configurable parameters
int seed;
s32 seed;
int water_level;
int lava_depth;
NoiseParams *np_caveliquids;
@ -122,7 +122,7 @@ public:
// If gennotify is NULL, generation events are not logged.
CavesRandomWalk(INodeDefManager *ndef,
GenerateNotifier *gennotify = NULL,
int seed = 0,
s32 seed = 0,
int water_level = 1,
content_t water_source = CONTENT_IGNORE,
content_t lava_source = CONTENT_IGNORE);

2
src/dungeongen.h
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@ -39,7 +39,7 @@ int dir_to_facedir(v3s16 d);
struct DungeonParams {
int seed;
s32 seed;
content_t c_water;
content_t c_river_water;

20
src/mapgen.cpp
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@ -89,11 +89,25 @@ Mapgen::Mapgen(int mapgenid, MapgenParams *params, EmergeManager *emerge) :
{
generating = false;
id = mapgenid;
seed = (int)params->seed;
water_level = params->water_level;
flags = params->flags;
csize = v3s16(1, 1, 1) * (params->chunksize * MAP_BLOCKSIZE);
/*
We are losing half our entropy by doing this, but it is necessary to
preserve reverse compatibility. If the top half of our current 64 bit
seeds ever starts getting used, existing worlds will break due to a
different hash outcome and no way to differentiate between versions.
A solution could be to add a new bit to designate that the top half of
the seed value should be used, essentially a 1-bit version code, but
this would require increasing the total size of a seed to 9 bytes (yuck)
It's probably okay if this never gets fixed. 4.2 billion possibilities
ought to be enough for anyone.
*/
seed = (s32)params->seed;
vm = NULL;
ndef = emerge->ndef;
biomegen = NULL;
@ -107,7 +121,7 @@ Mapgen::~Mapgen()
}
u32 Mapgen::getBlockSeed(v3s16 p, int seed)
u32 Mapgen::getBlockSeed(v3s16 p, s32 seed)
{
return (u32)seed +
p.Z * 38134234 +
@ -116,7 +130,7 @@ u32 Mapgen::getBlockSeed(v3s16 p, int seed)
}
u32 Mapgen::getBlockSeed2(v3s16 p, int seed)
u32 Mapgen::getBlockSeed2(v3s16 p, s32 seed)
{
u32 n = 1619 * p.X + 31337 * p.Y + 52591 * p.Z + 1013 * seed;
n = (n >> 13) ^ n;

6
src/mapgen.h
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@ -150,7 +150,7 @@ struct MapgenParams {
*/
class Mapgen {
public:
int seed;
s32 seed;
int water_level;
u32 flags;
bool generating;
@ -171,8 +171,8 @@ public:
Mapgen(int mapgenid, MapgenParams *params, EmergeManager *emerge);
virtual ~Mapgen();
static u32 getBlockSeed(v3s16 p, int seed);
static u32 getBlockSeed2(v3s16 p, int seed);
static u32 getBlockSeed(v3s16 p, s32 seed);
static u32 getBlockSeed2(v3s16 p, s32 seed);
s16 findGroundLevelFull(v2s16 p2d);
s16 findGroundLevel(v2s16 p2d, s16 ymin, s16 ymax);
s16 findLiquidSurface(v2s16 p2d, s16 ymin, s16 ymax);

2
src/mg_biome.h
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@ -80,7 +80,7 @@ struct BiomeParams {
virtual void writeParams(Settings *settings) const = 0;
virtual ~BiomeParams() {}
int seed;
s32 seed;
};
class BiomeGen {

26
src/noise.cpp
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@ -156,7 +156,7 @@ s32 PcgRandom::randNormalDist(s32 min, s32 max, int num_trials)
///////////////////////////////////////////////////////////////////////////////
float noise2d(int x, int y, int seed)
float noise2d(int x, int y, s32 seed)
{
unsigned int n = (NOISE_MAGIC_X * x + NOISE_MAGIC_Y * y
+ NOISE_MAGIC_SEED * seed) & 0x7fffffff;
@ -166,7 +166,7 @@ float noise2d(int x, int y, int seed)
}
float noise3d(int x, int y, int z, int seed)
float noise3d(int x, int y, int z, s32 seed)
{
unsigned int n = (NOISE_MAGIC_X * x + NOISE_MAGIC_Y * y + NOISE_MAGIC_Z * z
+ NOISE_MAGIC_SEED * seed) & 0x7fffffff;
@ -235,7 +235,7 @@ float triLinearInterpolationNoEase(
return linearInterpolation(u, v, z);
}
float noise2d_gradient(float x, float y, int seed, bool eased)
float noise2d_gradient(float x, float y, s32 seed, bool eased)
{
// Calculate the integer coordinates
int x0 = myfloor(x);
@ -256,7 +256,7 @@ float noise2d_gradient(float x, float y, int seed, bool eased)
}
float noise3d_gradient(float x, float y, float z, int seed, bool eased)
float noise3d_gradient(float x, float y, float z, s32 seed, bool eased)
{
// Calculate the integer coordinates
int x0 = myfloor(x);
@ -290,7 +290,7 @@ float noise3d_gradient(float x, float y, float z, int seed, bool eased)
}
float noise2d_perlin(float x, float y, int seed,
float noise2d_perlin(float x, float y, s32 seed,
int octaves, float persistence, bool eased)
{
float a = 0;
@ -306,7 +306,7 @@ float noise2d_perlin(float x, float y, int seed,
}
float noise2d_perlin_abs(float x, float y, int seed,
float noise2d_perlin_abs(float x, float y, s32 seed,
int octaves, float persistence, bool eased)
{
float a = 0;
@ -321,7 +321,7 @@ float noise2d_perlin_abs(float x, float y, int seed,
}
float noise3d_perlin(float x, float y, float z, int seed,
float noise3d_perlin(float x, float y, float z, s32 seed,
int octaves, float persistence, bool eased)
{
float a = 0;
@ -336,7 +336,7 @@ float noise3d_perlin(float x, float y, float z, int seed,
}
float noise3d_perlin_abs(float x, float y, float z, int seed,
float noise3d_perlin_abs(float x, float y, float z, s32 seed,
int octaves, float persistence, bool eased)
{
float a = 0;
@ -363,7 +363,7 @@ float contour(float v)
///////////////////////// [ New noise ] ////////////////////////////
float NoisePerlin2D(NoiseParams *np, float x, float y, int seed)
float NoisePerlin2D(NoiseParams *np, float x, float y, s32 seed)
{
float a = 0;
float f = 1.0;
@ -389,7 +389,7 @@ float NoisePerlin2D(NoiseParams *np, float x, float y, int seed)
}
float NoisePerlin3D(NoiseParams *np, float x, float y, float z, int seed)
float NoisePerlin3D(NoiseParams *np, float x, float y, float z, s32 seed)
{
float a = 0;
float f = 1.0;
@ -416,7 +416,7 @@ float NoisePerlin3D(NoiseParams *np, float x, float y, float z, int seed)
}
Noise::Noise(NoiseParams *np_, int seed, u32 sx, u32 sy, u32 sz)
Noise::Noise(NoiseParams *np_, s32 seed, u32 sx, u32 sy, u32 sz)
{
memcpy(&np, np_, sizeof(np));
this->seed = seed;
@ -543,7 +543,7 @@ void Noise::resizeNoiseBuf(bool is3d)
void Noise::gradientMap2D(
float x, float y,
float step_x, float step_y,
int seed)
s32 seed)
{
float v00, v01, v10, v11, u, v, orig_u;
u32 index, i, j, noisex, noisey;
@ -607,7 +607,7 @@ void Noise::gradientMap2D(
void Noise::gradientMap3D(
float x, float y, float z,
float step_x, float step_y, float step_z,
int seed)
s32 seed)
{
float v000, v010, v100, v110;
float v001, v011, v101, v111;

32
src/noise.h
View File

@ -148,7 +148,7 @@ struct NoiseParams {
class Noise {
public:
NoiseParams np;
int seed;
s32 seed;
u32 sx;
u32 sy;
u32 sz;
@ -157,7 +157,7 @@ public:
float *persist_buf;
float *result;
Noise(NoiseParams *np, int seed, u32 sx, u32 sy, u32 sz=1);
Noise(NoiseParams *np, s32 seed, u32 sx, u32 sy, u32 sz=1);
~Noise();
void setSize(u32 sx, u32 sy, u32 sz=1);
@ -167,11 +167,11 @@ public:
void gradientMap2D(
float x, float y,
float step_x, float step_y,
int seed);
s32 seed);
void gradientMap3D(
float x, float y, float z,
float step_x, float step_y, float step_z,
int seed);
s32 seed);
float *perlinMap2D(float x, float y, float *persistence_map=NULL);
float *perlinMap3D(float x, float y, float z, float *persistence_map=NULL);
@ -202,11 +202,11 @@ private:
};
float NoisePerlin2D(NoiseParams *np, float x, float y, int seed);
float NoisePerlin3D(NoiseParams *np, float x, float y, float z, int seed);
float NoisePerlin2D(NoiseParams *np, float x, float y, s32 seed);
float NoisePerlin3D(NoiseParams *np, float x, float y, float z, s32 seed);
inline float NoisePerlin2D_PO(NoiseParams *np, float x, float xoff,
float y, float yoff, int seed)
float y, float yoff, s32 seed)
{
return NoisePerlin2D(np,
x + xoff * np->spread.X,
@ -215,7 +215,7 @@ inline float NoisePerlin2D_PO(NoiseParams *np, float x, float xoff,
}
inline float NoisePerlin3D_PO(NoiseParams *np, float x, float xoff,
float y, float yoff, float z, float zoff, int seed)
float y, float yoff, float z, float zoff, s32 seed)
{
return NoisePerlin3D(np,
x + xoff * np->spread.X,
@ -225,22 +225,22 @@ inline float NoisePerlin3D_PO(NoiseParams *np, float x, float xoff,
}
// Return value: -1 ... 1
float noise2d(int x, int y, int seed);
float noise3d(int x, int y, int z, int seed);
float noise2d(int x, int y, s32 seed);
float noise3d(int x, int y, int z, s32 seed);
float noise2d_gradient(float x, float y, int seed, bool eased=true);
float noise3d_gradient(float x, float y, float z, int seed, bool eased=false);
float noise2d_gradient(float x, float y, s32 seed, bool eased=true);
float noise3d_gradient(float x, float y, float z, s32 seed, bool eased=false);
float noise2d_perlin(float x, float y, int seed,
float noise2d_perlin(float x, float y, s32 seed,
int octaves, float persistence, bool eased=true);
float noise2d_perlin_abs(float x, float y, int seed,
float noise2d_perlin_abs(float x, float y, s32 seed,
int octaves, float persistence, bool eased=true);
float noise3d_perlin(float x, float y, float z, int seed,
float noise3d_perlin(float x, float y, float z, s32 seed,
int octaves, float persistence, bool eased=false);
float noise3d_perlin_abs(float x, float y, float z, int seed,
float noise3d_perlin_abs(float x, float y, float z, s32 seed,
int octaves, float persistence, bool eased=false);
inline float easeCurve(float t)

2
src/script/lua_api/l_env.cpp
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@ -758,7 +758,7 @@ int ModApiEnvMod::l_get_perlin_map(lua_State *L)
return 0;
v3s16 size = read_v3s16(L, 2);
int seed = (int)(env->getServerMap().getSeed());
s32 seed = (s32)(env->getServerMap().getSeed());
LuaPerlinNoiseMap *n = new LuaPerlinNoiseMap(&np, seed, size);
*(void **)(lua_newuserdata(L, sizeof(void *))) = n;
luaL_getmetatable(L, "PerlinNoiseMap");

2
src/script/lua_api/l_noise.cpp
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@ -146,7 +146,7 @@ const luaL_reg LuaPerlinNoise::methods[] = {
LuaPerlinNoiseMap
*/
LuaPerlinNoiseMap::LuaPerlinNoiseMap(NoiseParams *params, int seed, v3s16 size)
LuaPerlinNoiseMap::LuaPerlinNoiseMap(NoiseParams *params, s32 seed, v3s16 size)
{
m_is3d = size.Z > 1;
np = *params;

4
src/script/lua_api/l_noise.h
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@ -79,7 +79,7 @@ class LuaPerlinNoiseMap : public ModApiBase {
static int l_getMapSlice(lua_State *L);
public:
LuaPerlinNoiseMap(NoiseParams *np, int seed, v3s16 size);
LuaPerlinNoiseMap(NoiseParams *np, s32 seed, v3s16 size);
~LuaPerlinNoiseMap();
@ -111,7 +111,7 @@ private:
static int l_next(lua_State *L);
public:
LuaPseudoRandom(int seed) :
LuaPseudoRandom(s32 seed) :
m_pseudo(seed) {}
// LuaPseudoRandom(seed)

8
src/treegen.cpp
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@ -31,7 +31,7 @@ namespace treegen
{
void make_tree(MMVManip &vmanip, v3s16 p0,
bool is_apple_tree, INodeDefManager *ndef, int seed)
bool is_apple_tree, INodeDefManager *ndef, s32 seed)
{
/*
NOTE: Tree-placing code is currently duplicated in the engine
@ -149,7 +149,7 @@ treegen::error make_ltree(MMVManip &vmanip, v3s16 p0,
INodeDefManager *ndef, TreeDef tree_definition)
{
MapNode dirtnode(ndef->getId("mapgen_dirt"));
int seed;
s32 seed;
if (tree_definition.explicit_seed)
seed = tree_definition.seed + 14002;
else
@ -649,7 +649,7 @@ v3f transposeMatrix(irr::core::matrix4 M, v3f v)
}
void make_jungletree(MMVManip &vmanip, v3s16 p0, INodeDefManager *ndef, int seed)
void make_jungletree(MMVManip &vmanip, v3s16 p0, INodeDefManager *ndef, s32 seed)
{
/*
NOTE: Tree-placing code is currently duplicated in the engine
@ -748,7 +748,7 @@ void make_jungletree(MMVManip &vmanip, v3s16 p0, INodeDefManager *ndef, int seed
}
void make_pine_tree(MMVManip &vmanip, v3s16 p0, INodeDefManager *ndef, int seed)
void make_pine_tree(MMVManip &vmanip, v3s16 p0, INodeDefManager *ndef, s32 seed)
{
/*
NOTE: Tree-placing code is currently duplicated in the engine

8
src/treegen.h
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@ -54,19 +54,19 @@ namespace treegen {
bool thin_branches;
MapNode fruitnode;
int fruit_chance;
int seed;
s32 seed;
bool explicit_seed;
};
// Add default tree
void make_tree(MMVManip &vmanip, v3s16 p0,
bool is_apple_tree, INodeDefManager *ndef, int seed);
bool is_apple_tree, INodeDefManager *ndef, s32 seed);
// Add jungle tree
void make_jungletree(MMVManip &vmanip, v3s16 p0,
INodeDefManager *ndef, int seed);
INodeDefManager *ndef, s32 seed);
// Add pine tree
void make_pine_tree(MMVManip &vmanip, v3s16 p0,
INodeDefManager *ndef, int seed);
INodeDefManager *ndef, s32 seed);
// Add L-Systems tree (used by engine)
treegen::error make_ltree(MMVManip &vmanip, v3s16 p0, INodeDefManager *ndef,