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Add minetest.load_area (#8023)

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HybridDog authored and paramat committed Dec 31, 2018
1 parent aa5ec2e commit c6f784f43bca3328c6810c26c8bda2ea507c70e8
Showing with 32 additions and 0 deletions.
  1. +4 −0 doc/lua_api.txt
  2. +25 −0 src/script/lua_api/l_env.cpp
  3. +3 −0 src/script/lua_api/l_env.h
@@ -3989,6 +3989,10 @@ Environment access
* mode = `"quick"`: Clear objects immediately in loaded mapblocks,
clear objects in unloaded mapblocks only when the
mapblocks are next activated.
* `minetest.load_area(pos1[, pos2])`
* Load the mapblocks containing the area from `pos1` to `pos2`.
`pos2` defaults to `pos1` if not specified.
* This function does not trigger map generation.
* `minetest.emerge_area(pos1, pos2, [callback], [param])`
* Queue all blocks in the area from `pos1` to `pos2`, inclusive, to be
asynchronously fetched from memory, loaded from disk, or if inexistent,
@@ -1047,6 +1047,30 @@ int ModApiEnvMod::l_raycast(lua_State *L)
return LuaRaycast::create_object(L);
}

// load_area(p1, [p2])
// load mapblocks in area p1..p2, but do not generate map
int ModApiEnvMod::l_load_area(lua_State *L)
{
GET_ENV_PTR;
MAP_LOCK_REQUIRED;

Map *map = &(env->getMap());
v3s16 bp1 = getNodeBlockPos(check_v3s16(L, 1));
if (!lua_istable(L, 2)) {
map->emergeBlock(bp1);
} else {
v3s16 bp2 = getNodeBlockPos(check_v3s16(L, 2));
sortBoxVerticies(bp1, bp2);
for (s16 z = bp1.Z; z <= bp2.Z; z++)
for (s16 y = bp1.Y; y <= bp2.Y; y++)
for (s16 x = bp1.X; x <= bp2.X; x++) {
map->emergeBlock(v3s16(x, y, z));
}
}

return 0;
}

// emerge_area(p1, p2, [callback, context])
// emerge mapblocks in area p1..p2, calls callback with context upon completion
int ModApiEnvMod::l_emerge_area(lua_State *L)
@@ -1287,6 +1311,7 @@ void ModApiEnvMod::Initialize(lua_State *L, int top)
API_FCT(find_nodes_in_area);
API_FCT(find_nodes_in_area_under_air);
API_FCT(fix_light);
API_FCT(load_area);
API_FCT(emerge_area);
API_FCT(delete_area);
API_FCT(get_perlin);
@@ -135,6 +135,9 @@ class ModApiEnvMod : public ModApiBase {
// fix_light(p1, p2) -> true/false
static int l_fix_light(lua_State *L);

// load_area(p1)
static int l_load_area(lua_State *L);

// emerge_area(p1, p2)
static int l_emerge_area(lua_State *L);

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