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https://github.com/moparisthebest/minetest
synced 2024-12-23 16:08:51 -05:00
Lua interface for ActiveBlockModifier
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Perttu Ahola
parent
8924588511
commit
34bd1b3032
@ -1296,36 +1296,6 @@ end
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register_falling_node("sand", "sand.png")
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register_falling_node("gravel", "gravel.png")
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--[[
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minetest.register_entity("falling_sand", {
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-- Definition
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collisionbox = {-0.5,-0.5,-0.5, 0.5,0.5,0.5},
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visual = "cube",
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textures = {"sand.png","sand.png","sand.png","sand.png","sand.png","sand.png"},
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-- State
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fallspeed = 0,
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-- Methods
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on_step = function(self, dtime)
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-- Apply gravity
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self.fallspeed = self.fallspeed + dtime * 5
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fp = self.object:getpos()
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fp.y = fp.y - self.fallspeed * dtime
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self.object:moveto(fp)
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-- Turn to actual sand when collides to ground or just move
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bcp = {x=fp.x, y=fp.y-0.5, z=fp.z} -- Position of bottom center point
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bcn = minetest.env:get_node(bcp)
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if bcn.name ~= "air" then
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-- Turn to a sand node
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np = {x=bcp.x, y=bcp.y+1, z=bcp.z}
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minetest.env:add_node(np, {name="sand"})
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self.object:remove()
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else
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-- Do nothing
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end
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end
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})
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--]]
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--
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-- Global callbacks
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--
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@ -1389,6 +1359,17 @@ minetest.register_on_chat_message(function(name, message)
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end
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end)
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minetest.register_abm({
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nodenames = {"TNT"},
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interval = 10.0,
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chance = 1,
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action = function(pos, node, active_object_count, active_object_count_wider)
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print("TNT ABM action")
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pos.y = pos.y + 1
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minetest.env:add_node(pos, {name="papyrus"})
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end,
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})
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--
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-- Done, print some random stuff
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--
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@ -498,6 +498,105 @@ static int l_register_entity(lua_State *L)
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return 0; /* number of results */
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}
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class LuaABM : public ActiveBlockModifier
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{
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private:
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lua_State *m_lua;
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int m_id;
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std::set<std::string> m_trigger_contents;
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float m_trigger_interval;
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u32 m_trigger_chance;
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public:
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LuaABM(lua_State *L, int id,
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const std::set<std::string> &trigger_contents,
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float trigger_interval, u32 trigger_chance):
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m_lua(L),
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m_id(id),
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m_trigger_contents(trigger_contents),
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m_trigger_interval(trigger_interval),
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m_trigger_chance(trigger_chance)
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{
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}
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virtual std::set<std::string> getTriggerContents()
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{
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return m_trigger_contents;
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}
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virtual float getTriggerInterval()
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{
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return m_trigger_interval;
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}
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virtual u32 getTriggerChance()
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{
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return m_trigger_chance;
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}
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virtual void trigger(ServerEnvironment *env, v3s16 p, MapNode n,
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u32 active_object_count, u32 active_object_count_wider)
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{
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lua_State *L = m_lua;
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realitycheck(L);
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assert(lua_checkstack(L, 20));
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StackUnroller stack_unroller(L);
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// Get minetest.registered_abms
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lua_getglobal(L, "minetest");
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lua_getfield(L, -1, "registered_abms");
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luaL_checktype(L, -1, LUA_TTABLE);
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int registered_abms = lua_gettop(L);
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// Get minetest.registered_abms[m_id]
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lua_pushnumber(L, m_id);
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lua_gettable(L, registered_abms);
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if(lua_isnil(L, -1))
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assert(0);
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// Call action
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luaL_checktype(L, -1, LUA_TTABLE);
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lua_getfield(L, -1, "action");
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luaL_checktype(L, -1, LUA_TFUNCTION);
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pushpos(L, p);
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pushnode(L, n, env->getGameDef()->ndef());
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lua_pushnumber(L, active_object_count);
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lua_pushnumber(L, active_object_count_wider);
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if(lua_pcall(L, 4, 0, 0))
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script_error(L, "error: %s\n", lua_tostring(L, -1));
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}
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};
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// register_abm({...})
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static int l_register_abm(lua_State *L)
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{
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infostream<<"register_abm"<<std::endl;
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luaL_checktype(L, 1, LUA_TTABLE);
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// Get minetest.registered_abms
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lua_getglobal(L, "minetest");
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lua_getfield(L, -1, "registered_abms");
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luaL_checktype(L, -1, LUA_TTABLE);
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int registered_abms = lua_gettop(L);
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int id = 1;
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// Find free id
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for(;;){
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lua_pushnumber(L, id);
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lua_gettable(L, registered_abms);
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if(lua_isnil(L, -1))
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break;
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lua_pop(L, 1);
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}
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lua_pop(L, 1);
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infostream<<"register_abm: id="<<id<<std::endl;
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// registered_abms[id] = spec
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lua_pushnumber(L, id);
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lua_pushvalue(L, 1);
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lua_settable(L, registered_abms);
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return 0; /* number of results */
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}
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// register_tool(name, {lots of stuff})
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static int l_register_tool(lua_State *L)
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{
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@ -894,6 +993,7 @@ static const struct luaL_Reg minetest_f [] = {
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{"register_tool", l_register_tool},
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{"register_node", l_register_node},
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{"register_craft", l_register_craft},
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{"register_abm", l_register_abm},
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{"setting_get", l_setting_get},
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{"setting_getbool", l_setting_getbool},
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{"chat_send_all", l_chat_send_all},
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@ -1420,6 +1520,8 @@ void scriptapi_export(lua_State *L, Server *server)
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lua_setfield(L, -2, "registered_nodes");
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lua_newtable(L);
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lua_setfield(L, -2, "registered_entities");
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lua_newtable(L);
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lua_setfield(L, -2, "registered_abms");
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lua_newtable(L);
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lua_setfield(L, -2, "object_refs");
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@ -1458,6 +1560,58 @@ void scriptapi_add_environment(lua_State *L, ServerEnvironment *env)
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luaL_checktype(L, -1, LUA_TTABLE);
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lua_pushvalue(L, envref);
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lua_setfield(L, -2, "env");
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// Store environment as light userdata in registry
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lua_pushlightuserdata(L, env);
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lua_setfield(L, LUA_REGISTRYINDEX, "minetest_env");
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/* Add ActiveBlockModifiers to environment */
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// Get minetest.registered_abms
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lua_getglobal(L, "minetest");
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lua_getfield(L, -1, "registered_abms");
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luaL_checktype(L, -1, LUA_TTABLE);
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int registered_abms = lua_gettop(L);
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if(lua_istable(L, registered_abms)){
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int table = lua_gettop(L);
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lua_pushnil(L);
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while(lua_next(L, table) != 0){
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// key at index -2 and value at index -1
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int id = lua_tonumber(L, -2);
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int current_abm = lua_gettop(L);
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std::set<std::string> trigger_contents;
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lua_getfield(L, current_abm, "nodenames");
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if(lua_istable(L, -1)){
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int table = lua_gettop(L);
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lua_pushnil(L);
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while(lua_next(L, table) != 0){
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// key at index -2 and value at index -1
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luaL_checktype(L, -1, LUA_TSTRING);
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trigger_contents.insert(lua_tostring(L, -1));
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// removes value, keeps key for next iteration
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lua_pop(L, 1);
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}
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}
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lua_pop(L, 1);
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float trigger_interval = 10.0;
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getfloatfield(L, current_abm, "interval", trigger_interval);
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int trigger_chance = 50;
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getintfield(L, current_abm, "chance", trigger_chance);
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LuaABM *abm = new LuaABM(L, id, trigger_contents,
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trigger_interval, trigger_chance);
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env->addActiveBlockModifier(abm);
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// removes value, keeps key for next iteration
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lua_pop(L, 1);
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}
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}
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lua_pop(L, 1);
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}
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#if 0
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