#include "common/c_converter.h"
#include "common/c_content.h"
#include "log.h"
+#include "porting.h"
+#include "util/numeric.h"
///////////////////////////////////////
/*
{
NO_MAP_LOCK_REQUIRED;
LuaPerlinNoise *o = checkobject(L, 1);
- v2f p = read_v2f(L, 2);
+ v2f p = check_v2f(L, 2);
lua_Number val = NoisePerlin2D(&o->np, p.X, p.Y, 0);
lua_pushnumber(L, val);
return 1;
{
NO_MAP_LOCK_REQUIRED;
LuaPerlinNoise *o = checkobject(L, 1);
- v3f p = read_v3f(L, 2);
+ v3f p = check_v3f(L, 2);
lua_Number val = NoisePerlin3D(&o->np, p.X, p.Y, p.Z, 0);
lua_pushnumber(L, val);
return 1;
const char LuaPerlinNoise::className[] = "PerlinNoise";
-const luaL_reg LuaPerlinNoise::methods[] = {
+const luaL_Reg LuaPerlinNoise::methods[] = {
luamethod(LuaPerlinNoise, get2d),
luamethod(LuaPerlinNoise, get3d),
{0,0}
LuaPerlinNoiseMap
*/
-LuaPerlinNoiseMap::LuaPerlinNoiseMap(NoiseParams *params, int seed, v3s16 size)
+LuaPerlinNoiseMap::LuaPerlinNoiseMap(NoiseParams *params, s32 seed, v3s16 size)
{
m_is3d = size.Z > 1;
np = *params;
size_t i = 0;
LuaPerlinNoiseMap *o = checkobject(L, 1);
- v2f p = read_v2f(L, 2);
+ v2f p = check_v2f(L, 2);
Noise *n = o->noise;
n->perlinMap2D(p.X, p.Y);
lua_newtable(L);
- for (int y = 0; y != n->sy; y++) {
+ for (u32 y = 0; y != n->sy; y++) {
lua_newtable(L);
- for (int x = 0; x != n->sx; x++) {
+ for (u32 x = 0; x != n->sx; x++) {
lua_pushnumber(L, n->result[i++]);
lua_rawseti(L, -2, x + 1);
}
NO_MAP_LOCK_REQUIRED;
LuaPerlinNoiseMap *o = checkobject(L, 1);
- v2f p = read_v2f(L, 2);
+ v2f p = check_v2f(L, 2);
+ bool use_buffer = lua_istable(L, 3);
Noise *n = o->noise;
n->perlinMap2D(p.X, p.Y);
size_t maplen = n->sx * n->sy;
- lua_newtable(L);
+ if (use_buffer)
+ lua_pushvalue(L, 3);
+ else
+ lua_newtable(L);
+
for (size_t i = 0; i != maplen; i++) {
lua_pushnumber(L, n->result[i]);
lua_rawseti(L, -2, i + 1);
size_t i = 0;
LuaPerlinNoiseMap *o = checkobject(L, 1);
- v3f p = read_v3f(L, 2);
+ v3f p = check_v3f(L, 2);
if (!o->m_is3d)
return 0;
n->perlinMap3D(p.X, p.Y, p.Z);
lua_newtable(L);
- for (int z = 0; z != n->sz; z++) {
+ for (u32 z = 0; z != n->sz; z++) {
lua_newtable(L);
- for (int y = 0; y != n->sy; y++) {
+ for (u32 y = 0; y != n->sy; y++) {
lua_newtable(L);
- for (int x = 0; x != n->sx; x++) {
+ for (u32 x = 0; x != n->sx; x++) {
lua_pushnumber(L, n->result[i++]);
lua_rawseti(L, -2, x + 1);
}
NO_MAP_LOCK_REQUIRED;
LuaPerlinNoiseMap *o = checkobject(L, 1);
- v3f p = read_v3f(L, 2);
+ v3f p = check_v3f(L, 2);
+ bool use_buffer = lua_istable(L, 3);
if (!o->m_is3d)
return 0;
size_t maplen = n->sx * n->sy * n->sz;
- lua_newtable(L);
+ if (use_buffer)
+ lua_pushvalue(L, 3);
+ else
+ lua_newtable(L);
+
for (size_t i = 0; i != maplen; i++) {
lua_pushnumber(L, n->result[i]);
lua_rawseti(L, -2, i + 1);
}
+int LuaPerlinNoiseMap::l_calc2dMap(lua_State *L)
+{
+ NO_MAP_LOCK_REQUIRED;
+
+ LuaPerlinNoiseMap *o = checkobject(L, 1);
+ v2f p = check_v2f(L, 2);
+
+ Noise *n = o->noise;
+ n->perlinMap2D(p.X, p.Y);
+
+ return 0;
+}
+
+int LuaPerlinNoiseMap::l_calc3dMap(lua_State *L)
+{
+ NO_MAP_LOCK_REQUIRED;
+
+ LuaPerlinNoiseMap *o = checkobject(L, 1);
+ v3f p = check_v3f(L, 2);
+
+ if (!o->m_is3d)
+ return 0;
+
+ Noise *n = o->noise;
+ n->perlinMap3D(p.X, p.Y, p.Z);
+
+ return 0;
+}
+
+
+int LuaPerlinNoiseMap::l_getMapSlice(lua_State *L)
+{
+ NO_MAP_LOCK_REQUIRED;
+
+ LuaPerlinNoiseMap *o = checkobject(L, 1);
+ v3s16 slice_offset = read_v3s16(L, 2);
+ v3s16 slice_size = read_v3s16(L, 3);
+ bool use_buffer = lua_istable(L, 4);
+
+ Noise *n = o->noise;
+
+ if (use_buffer)
+ lua_pushvalue(L, 3);
+ else
+ lua_newtable(L);
+
+ write_array_slice_float(L, lua_gettop(L), n->result,
+ v3u16(n->sx, n->sy, n->sz),
+ v3u16(slice_offset.X, slice_offset.Y, slice_offset.Z),
+ v3u16(slice_size.X, slice_size.Y, slice_size.Z));
+
+ return 1;
+}
+
+
int LuaPerlinNoiseMap::create_object(lua_State *L)
{
NoiseParams np;
const char LuaPerlinNoiseMap::className[] = "PerlinNoiseMap";
-const luaL_reg LuaPerlinNoiseMap::methods[] = {
+const luaL_Reg LuaPerlinNoiseMap::methods[] = {
luamethod(LuaPerlinNoiseMap, get2dMap),
luamethod(LuaPerlinNoiseMap, get2dMap_flat),
+ luamethod(LuaPerlinNoiseMap, calc2dMap),
luamethod(LuaPerlinNoiseMap, get3dMap),
luamethod(LuaPerlinNoiseMap, get3dMap_flat),
+ luamethod(LuaPerlinNoiseMap, calc3dMap),
+ luamethod(LuaPerlinNoiseMap, getMapSlice),
{0,0}
};
int LuaPseudoRandom::l_next(lua_State *L)
{
NO_MAP_LOCK_REQUIRED;
+
LuaPseudoRandom *o = checkobject(L, 1);
int min = 0;
int max = 32767;
int LuaPseudoRandom::create_object(lua_State *L)
{
- int seed = luaL_checknumber(L, 1);
+ NO_MAP_LOCK_REQUIRED;
+
+ u64 seed = luaL_checknumber(L, 1);
LuaPseudoRandom *o = new LuaPseudoRandom(seed);
*(void **)(lua_newuserdata(L, sizeof(void *))) = o;
luaL_getmetatable(L, className);
const char LuaPseudoRandom::className[] = "PseudoRandom";
-const luaL_reg LuaPseudoRandom::methods[] = {
+const luaL_Reg LuaPseudoRandom::methods[] = {
luamethod(LuaPseudoRandom, next),
{0,0}
};
int LuaPcgRandom::create_object(lua_State *L)
{
- lua_Integer seed = luaL_checknumber(L, 1);
- LuaPcgRandom *o = lua_isnumber(L, 2) ?
+ NO_MAP_LOCK_REQUIRED;
+
+ u64 seed = luaL_checknumber(L, 1);
+ LuaPcgRandom *o = lua_isnumber(L, 2) ?
new LuaPcgRandom(seed, lua_tointeger(L, 2)) :
new LuaPcgRandom(seed);
*(void **)(lua_newuserdata(L, sizeof(void *))) = o;
const char LuaPcgRandom::className[] = "PcgRandom";
-const luaL_reg LuaPcgRandom::methods[] = {
+const luaL_Reg LuaPcgRandom::methods[] = {
luamethod(LuaPcgRandom, next),
luamethod(LuaPcgRandom, rand_normal_dist),
{0,0}
};
+
+///////////////////////////////////////
+/*
+ LuaSecureRandom
+*/
+
+bool LuaSecureRandom::fillRandBuf()
+{
+ return porting::secure_rand_fill_buf(m_rand_buf, RAND_BUF_SIZE);
+}
+
+int LuaSecureRandom::l_next_bytes(lua_State *L)
+{
+ NO_MAP_LOCK_REQUIRED;
+
+ LuaSecureRandom *o = checkobject(L, 1);
+ u32 count = lua_isnumber(L, 2) ? lua_tointeger(L, 2) : 1;
+
+ // Limit count
+ count = MYMIN(RAND_BUF_SIZE, count);
+
+ // Find out whether we can pass directly from our array, or have to do some gluing
+ size_t count_remaining = RAND_BUF_SIZE - o->m_rand_idx;
+ if (count_remaining >= count) {
+ lua_pushlstring(L, o->m_rand_buf + o->m_rand_idx, count);
+ o->m_rand_idx += count;
+ } else {
+ char output_buf[RAND_BUF_SIZE];
+
+ // Copy over with what we have left from our current buffer
+ memcpy(output_buf, o->m_rand_buf + o->m_rand_idx, count_remaining);
+
+ // Refill buffer and copy over the remainder of what was requested
+ o->fillRandBuf();
+ memcpy(output_buf + count_remaining, o->m_rand_buf, count - count_remaining);
+
+ // Update index
+ o->m_rand_idx = count - count_remaining;
+
+ lua_pushlstring(L, output_buf, count);
+ }
+
+ return 1;
+}
+
+
+int LuaSecureRandom::create_object(lua_State *L)
+{
+ LuaSecureRandom *o = new LuaSecureRandom();
+
+ // Fail and return nil if we can't securely fill the buffer
+ if (!o->fillRandBuf()) {
+ delete o;
+ return 0;
+ }
+
+ *(void **)(lua_newuserdata(L, sizeof(void *))) = o;
+ luaL_getmetatable(L, className);
+ lua_setmetatable(L, -2);
+ return 1;
+}
+
+
+int LuaSecureRandom::gc_object(lua_State *L)
+{
+ LuaSecureRandom *o = *(LuaSecureRandom **)(lua_touserdata(L, 1));
+ delete o;
+ return 0;
+}
+
+
+LuaSecureRandom *LuaSecureRandom::checkobject(lua_State *L, int narg)
+{
+ luaL_checktype(L, narg, LUA_TUSERDATA);
+ void *ud = luaL_checkudata(L, narg, className);
+ if (!ud)
+ luaL_typerror(L, narg, className);
+ return *(LuaSecureRandom **)ud;
+}
+
+
+void LuaSecureRandom::Register(lua_State *L)
+{
+ lua_newtable(L);
+ int methodtable = lua_gettop(L);
+ luaL_newmetatable(L, className);
+ int metatable = lua_gettop(L);
+
+ lua_pushliteral(L, "__metatable");
+ lua_pushvalue(L, methodtable);
+ lua_settable(L, metatable);
+
+ lua_pushliteral(L, "__index");
+ lua_pushvalue(L, methodtable);
+ lua_settable(L, metatable);
+
+ lua_pushliteral(L, "__gc");
+ lua_pushcfunction(L, gc_object);
+ lua_settable(L, metatable);
+
+ lua_pop(L, 1);
+
+ luaL_openlib(L, 0, methods, 0);
+ lua_pop(L, 1);
+
+ lua_register(L, className, create_object);
+}
+
+const char LuaSecureRandom::className[] = "SecureRandom";
+const luaL_Reg LuaSecureRandom::methods[] = {
+ luamethod(LuaSecureRandom, next_bytes),
+ {0,0}
+};
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