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Add minetest.register_lbm() to run code on block load only

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This commit is contained in:
est31 2016-02-09 07:08:31 +01:00
parent 88fbe7ca1e
commit d494733839
12 changed files with 493 additions and 25 deletions
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40
src/script/lua_api/l_env.cpp
View file

@ -90,6 +90,46 @@ void LuaABM::trigger(ServerEnvironment *env, v3s16 p, MapNode n,
lua_pop(L, 1); // Pop error handler
}
void LuaLBM::trigger(ServerEnvironment *env, v3s16 p, MapNode n)
{
GameScripting *scriptIface = env->getScriptIface();
scriptIface->realityCheck();
lua_State *L = scriptIface->getStack();
sanity_check(lua_checkstack(L, 20));
StackUnroller stack_unroller(L);
int error_handler = PUSH_ERROR_HANDLER(L);
// Get registered_lbms
lua_getglobal(L, "core");
lua_getfield(L, -1, "registered_lbms");
luaL_checktype(L, -1, LUA_TTABLE);
lua_remove(L, -2); // Remove core
// Get registered_lbms[m_id]
lua_pushnumber(L, m_id);
lua_gettable(L, -2);
FATAL_ERROR_IF(lua_isnil(L, -1), "Entry with given id not found in registered_lbms table");
lua_remove(L, -2); // Remove registered_lbms
scriptIface->setOriginFromTable(-1);
// Call action
luaL_checktype(L, -1, LUA_TTABLE);
lua_getfield(L, -1, "action");
luaL_checktype(L, -1, LUA_TFUNCTION);
lua_remove(L, -2); // Remove registered_lbms[m_id]
push_v3s16(L, p);
pushnode(L, n, env->getGameDef()->ndef());
int result = lua_pcall(L, 2, 0, error_handler);
if (result)
scriptIface->scriptError(result, "LuaLBM::trigger");
lua_pop(L, 1); // Pop error handler
}
void LuaEmergeAreaCallback(v3s16 blockpos, EmergeAction action, void *param)
{
ScriptCallbackState *state = (ScriptCallbackState *)param;

18
src/script/lua_api/l_env.h
View file

@ -220,6 +220,24 @@ public:
u32 active_object_count, u32 active_object_count_wider);
};
class LuaLBM : public LoadingBlockModifierDef
{
private:
int m_id;
public:
LuaLBM(lua_State *L, int id,
const std::set<std::string> &trigger_contents,
const std::string &name,
bool run_at_every_load):
m_id(id)
{
this->run_at_every_load = run_at_every_load;
this->trigger_contents = trigger_contents;
this->name = name;
}
virtual void trigger(ServerEnvironment *env, v3s16 p, MapNode n);
};
struct ScriptCallbackState {
GameScripting *script;
int callback_ref;