src/guiKeyChangeMenu.h


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/*
 Minetest
 Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
 Copyright (C) 2013 Ciaran Gultnieks <ciaran@ciarang.com>
 Copyright (C) 2013 teddydestodes <derkomtur@schattengang.net>

 This program is free software; you can redistribute it and/or modify
 it under the terms of the GNU Lesser General Public License as published by
 the Free Software Foundation; either version 2.1 of the License, or
 (at your option) any later version.

 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU Lesser General Public License for more details.

 You should have received a copy of the GNU Lesser General Public License along
 with this program; if not, write to the Free Software Foundation, Inc.,
 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#ifndef GUIKEYCHANGEMENU_HEADER
#define GUIKEYCHANGEMENU_HEADER

#include "irrlichttypes_extrabloated.h"
#include "modalMenu.h"
#include "client.h"
#include "gettext.h"
#include "keycode.h"
#include <string>
#include <vector>

typedef struct {
	int id;
	wchar_t *button_name;
	KeyPress key;
	std::string setting_name;
	gui::IGUIButton *button;
} key_setting;


class GUIKeyChangeMenu: public GUIModalMenu
{
public:
	GUIKeyChangeMenu(gui::IGUIEnvironment* env, gui::IGUIElement* parent,
			s32 id, IMenuManager *menumgr);
	~GUIKeyChangeMenu();

	void removeChildren();
	/*
	 Remove and re-add (or reposition) stuff
	 */
	void regenerateGui(v2u32 screensize);

	void drawMenu();

	bool acceptInput();

	bool OnEvent(const SEvent& event);

private:

	void init_keys();

	bool resetMenu();

	void add_key(int id, std::string setting_name, std::string button_name);

	bool shift_down;
	
	s32 activeKey;
	
	std::vector<KeyPress> key_used;
	gui::IGUIStaticText *key_used_text;
	std::vector<key_setting *> key_settings;
};

#endif
/*
Minetest
Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/

#include "scriptapi.h"
#include "scriptapi_env.h"
#include "nodedef.h"
#include "gamedef.h"
#include "map.h"
#include "daynightratio.h"
#include "content_sao.h"
#include "script.h"
#include "treegen.h"
#include "util/pointedthing.h"
#include "scriptapi_types.h"
#include "scriptapi_noise.h"
#include "scriptapi_nodemeta.h"
#include "scriptapi_nodetimer.h"
#include "scriptapi_object.h"
#include "scriptapi_common.h"
#include "scriptapi_item.h"
#include "scriptapi_node.h"


//TODO
extern void scriptapi_run_callbacks(lua_State *L, int nargs,
		RunCallbacksMode mode);


class LuaABM : public ActiveBlockModifier
{
private:
	lua_State *m_lua;
	int m_id;

	std::set<std::string> m_trigger_contents;
	std::set<std::string> m_required_neighbors;
	float m_trigger_interval;
	u32 m_trigger_chance;
public:
	LuaABM(lua_State *L, int id,
			const std::set<std::string> &trigger_contents,
			const std::set<std::string> &required_neighbors,
			float trigger_interval, u32 trigger_chance):
		m_lua(L),
		m_id(id),
		m_trigger_contents(trigger_contents),
		m_required_neighbors(required_neighbors),
		m_trigger_interval(trigger_interval),
		m_trigger_chance(trigger_chance)
	{
	}
	virtual std::set<std::string> getTriggerContents()
	{
		return m_trigger_contents;
	}
	virtual std::set<std::string> getRequiredNeighbors()
	{
		return m_required_neighbors;
	}
	virtual float getTriggerInterval()
	{
		return m_trigger_interval;
	}
	virtual u32 getTriggerChance()
	{
		return m_trigger_chance;
	}
	virtual void trigger(ServerEnvironment *env, v3s16 p, MapNode n,
			u32 active_object_count, u32 active_object_count_wider)
	{
		lua_State *L = m_lua;

		realitycheck(L);
		assert(lua_checkstack(L, 20));
		StackUnroller stack_unroller(L);

		// Get minetest.registered_abms
		lua_getglobal(L, "minetest");
		lua_getfield(L, -1, "registered_abms");
		luaL_checktype(L, -1, LUA_TTABLE);
		int registered_abms = lua_gettop(L);

		// Get minetest.registered_abms[m_id]
		lua_pushnumber(L, m_id);
		lua_gettable(L, registered_abms);
		if(lua_isnil(L, -1))
			assert(0);

		// Call action
		luaL_checktype(L, -1, LUA_TTABLE);
		lua_getfield(L, -1, "action");
		luaL_checktype(L, -1, LUA_TFUNCTION);
		push_v3s16(L, p);
		pushnode(L, n, env->getGameDef()->ndef());
		lua_pushnumber(L, active_object_count);
		lua_pushnumber(L, active_object_count_wider);
		if(lua_pcall(L, 4, 0, 0))
			script_error(L, "error: %s", lua_tostring(L, -1));
	}
};

/*
	EnvRef
*/

int EnvRef::gc_object(lua_State *L) {
	EnvRef *o = *(EnvRef **)(lua_touserdata(L, 1));
	delete o;
	return 0;
}

EnvRef* EnvRef::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 *(EnvRef**)ud;  // unbox pointer
}

// Exported functions

// EnvRef:set_node(pos, node)
// pos = {x=num, y=num, z=num}
int EnvRef::l_set_node(lua_State *L)
{
	EnvRef *o = checkobject(L, 1);
	ServerEnvironment *env = o->m_env;
	if(env == NULL) return 0;
	INodeDefManager *ndef = env->getGameDef()->ndef();
	// parameters
	v3s16 pos = read_v3s16(L, 2);
	MapNode n = readnode(L, 3, ndef);
	// Do it
	bool succeeded = env->setNode(pos, n);
	lua_pushboolean(L, succeeded);
	return 1;
}

int EnvRef::l_add_node(lua_State *L)
{
	return l_set_node(L);
}

// EnvRef:remove_node(pos)
// pos = {x=num, y=num, z=num}
int EnvRef::l_remove_node(lua_State *L)
{
	EnvRef *o = checkobject(L, 1);
	ServerEnvironment *env = o->m_env;
	if(env == NULL) return 0;

	// parameters
	v3s16 pos = read_v3s16(L, 2);
	// Do it
	bool succeeded = env->removeNode(pos);
	lua_pushboolean(L, succeeded);
	return 1;
}

// EnvRef:get_node(pos)
// pos = {x=num, y=num, z=num}
int EnvRef::l_get_node(lua_State *L)
{
	EnvRef *o = checkobject(L, 1);
	ServerEnvironment *env = o->m_env;
	if(env == NULL) return 0;
	// pos
	v3s16 pos = read_v3s16(L, 2);
	// Do it
	MapNode n = env->getMap().getNodeNoEx(pos);
	// Return node
	pushnode(L, n, env->getGameDef()->ndef());
	return 1;
}

// EnvRef:get_node_or_nil(pos)
// pos = {x=num, y=num, z=num}
int EnvRef::l_get_node_or_nil(lua_State *L)
{
	EnvRef *o = checkobject(L, 1);
	ServerEnvironment *env = o->m_env;
	if(env == NULL) return 0;
	// pos
	v3s16 pos = read_v3s16(L, 2);
	// Do it
	try{
		MapNode n = env->getMap().getNode(pos);
		// Return node
		pushnode(L, n, env->getGameDef()->ndef());
		return 1;
	} catch(InvalidPositionException &e)
	{
		lua_pushnil(L);
		return 1;
	}
}

// EnvRef:get_node_light(pos, timeofday)
// pos = {x=num, y=num, z=num}
// timeofday: nil = current time, 0 = night, 0.5 = day
int EnvRef::l_get_node_light(lua_State *L)
{
	EnvRef *o = checkobject(L, 1);
	ServerEnvironment *env = o->m_env;
	if(env == NULL) return 0;
	// Do it
	v3s16 pos = read_v3s16(L, 2);
	u32 time_of_day = env->getTimeOfDay();
	if(lua_isnumber(L, 3))
		time_of_day = 24000.0 * lua_tonumber(L, 3);
	time_of_day %= 24000;
	u32 dnr = time_to_daynight_ratio(time_of_day, true);
	MapNode n = env->getMap().getNodeNoEx(pos);
	try{
		MapNode n = env->getMap().getNode(pos);
		INodeDefManager *ndef = env->getGameDef()->ndef();
		lua_pushinteger(L, n.getLightBlend(dnr, ndef));
		return 1;
	} catch(InvalidPositionException &e)
	{
		lua_pushnil(L);
		return 1;
	}
}

// EnvRef:place_node(pos, node)
// pos = {x=num, y=num, z=num}
int EnvRef::l_place_node(lua_State *L)
{
	EnvRef *o = checkobject(L, 1);
	ServerEnvironment *env = o->m_env;
	if(env == NULL) return 0;
	v3s16 pos = read_v3s16(L, 2);
	MapNode n = readnode(L, 3, env->getGameDef()->ndef());

	// Don't attempt to load non-loaded area as of now
	MapNode n_old = env->getMap().getNodeNoEx(pos);
	if(n_old.getContent() == CONTENT_IGNORE){
		lua_pushboolean(L, false);
		return 1;
	}
	// Create item to place
	INodeDefManager *ndef = get_server(L)->ndef();
	IItemDefManager *idef = get_server(L)->idef();
	ItemStack item(ndef->get(n).name, 1, 0, "", idef);
	// Make pointed position
	PointedThing pointed;
	pointed.type = POINTEDTHING_NODE;
	pointed.node_abovesurface = pos;
	pointed.node_undersurface = pos + v3s16(0,-1,0);
	// Place it with a NULL placer (appears in Lua as a non-functional
	// ObjectRef)
	bool success = scriptapi_item_on_place(L, item, NULL, pointed);
	lua_pushboolean(L, success);
	return 1;
}

// EnvRef:dig_node(pos)
// pos = {x=num, y=num, z=num}
int EnvRef::l_dig_node(lua_State *L)
{
	EnvRef *o = checkobject(L, 1);
	ServerEnvironment *env = o->m_env;
	if(env == NULL) return 0;
	v3s16 pos = read_v3s16(L, 2);

	// Don't attempt to load non-loaded area as of now
	MapNode n = env->getMap().getNodeNoEx(pos);
	if(n.getContent() == CONTENT_IGNORE){
		lua_pushboolean(L, false);
		return 1;
	}
	// Dig it out with a NULL digger (appears in Lua as a
	// non-functional ObjectRef)
	bool success = scriptapi_node_on_dig(L, pos, n, NULL);
	lua_pushboolean(L, success);
	return 1;
}

// EnvRef:punch_node(pos)
// pos = {x=num, y=num, z=num}
int EnvRef::l_punch_node(lua_State *L)
{
	EnvRef *o = checkobject(L, 1);
	ServerEnvironment *env = o->m_env;
	if(env == NULL) return 0;
	v3s16 pos = read_v3s16(L, 2);

	// Don't attempt to load non-loaded area as of now
	MapNode n = env->getMap().getNodeNoEx(pos);
	if(n.getContent() == CONTENT_IGNORE){
		lua_pushboolean(L, false);
		return 1;
	}
	// Punch it with a NULL puncher (appears in Lua as a non-functional
	// ObjectRef)
	bool success = scriptapi_node_on_punch(L, pos, n, NULL);
	lua_pushboolean(L, success);
	return 1;
}

// EnvRef:get_meta(pos)
int EnvRef::l_get_meta(lua_State *L)
{
	//infostream<<"EnvRef::l_get_meta()"<<std::endl;
	EnvRef *o = checkobject(L, 1);
	ServerEnvironment *env = o->m_env;
	if(env == NULL) return 0;
	// Do it
	v3s16 p = read_v3s16(L, 2);
	NodeMetaRef::create(L, p, env);
	return 1;
}

// EnvRef:get_node_timer(pos)
int EnvRef::l_get_node_timer(lua_State *L)
{
	EnvRef *o = checkobject(L, 1);
	ServerEnvironment *env = o->m_env;
	if(env == NULL) return 0;
	// Do it
	v3s16 p = read_v3s16(L, 2);
	NodeTimerRef::create(L, p, env);
	return 1;
}

// EnvRef:add_entity(pos, entityname) -> ObjectRef or nil
// pos = {x=num, y=num, z=num}
int EnvRef::l_add_entity(lua_State *L)
{
	//infostream<<"EnvRef::l_add_entity()"<<std::endl;
	EnvRef *o = checkobject(L, 1);
	ServerEnvironment *env = o->m_env;
	if(env == NULL) return 0;
	// pos
	v3f pos = checkFloatPos(L, 2);
	// content
	const char *name = luaL_checkstring(L, 3);
	// Do it
	ServerActiveObject *obj = new LuaEntitySAO(env, pos, name, "");
	int objectid = env->addActiveObject(obj);
	// If failed to add, return nothing (reads as nil)
	if(objectid == 0)
		return 0;
	// Return ObjectRef
	objectref_get_or_create(L, obj);
	return 1;
}

// EnvRef:add_item(pos, itemstack or itemstring or table) -> ObjectRef or nil
// pos = {x=num, y=num, z=num}
int EnvRef::l_add_item(lua_State *L)
{
	//infostream<<"EnvRef::l_add_item()"<<std::endl;
	EnvRef *o = checkobject(L, 1);
	ServerEnvironment *env = o->m_env;
	if(env == NULL) return 0;
	// pos
	v3f pos = checkFloatPos(L, 2);
	// item
	ItemStack item = read_item(L, 3);
	if(item.empty() || !item.isKnown(get_server(L)->idef()))
		return 0;
	// Use minetest.spawn_item to spawn a __builtin:item
	lua_getglobal(L, "minetest");
	lua_getfield(L, -1, "spawn_item");
	if(lua_isnil(L, -1))
		return 0;
	lua_pushvalue(L, 2);
	lua_pushstring(L, item.getItemString().c_str());
	if(lua_pcall(L, 2, 1, 0))
		script_error(L, "error: %s", lua_tostring(L, -1));
	return 1;
	/*lua_pushvalue(L, 1);
	lua_pushstring(L, "__builtin:item");
	lua_pushstring(L, item.getItemString().c_str());
	return l_add_entity(L);*/
	/*// Do it
	ServerActiveObject *obj = createItemSAO(env, pos, item.getItemString());
	int objectid = env->addActiveObject(obj);
	// If failed to add, return nothing (reads as nil)
	if(objectid == 0)
		return 0;
	// Return ObjectRef
	objectref_get_or_create(L, obj);
	return 1;*/
}

// EnvRef:add_rat(pos)
// pos = {x=num, y=num, z=num}
int EnvRef::l_add_rat(lua_State *L)
{
	infostream<<"EnvRef::l_add_rat(): C++ mobs have been removed."
			<<" Doing nothing."<<std::endl;
	return 0;
}

// EnvRef:add_firefly(pos)
// pos = {x=num, y=num, z=num}
int EnvRef::l_add_firefly(lua_State *L)
{
	infostream<<"EnvRef::l_add_firefly(): C++ mobs have been removed."
			<<" Doing nothing."<<std::endl;
	return 0;
}

// EnvRef:get_player_by_name(name)
int EnvRef::l_get_player_by_name(lua_State *L)
{
	EnvRef *o = checkobject(L, 1);
	ServerEnvironment *env = o->m_env;
	if(env == NULL) return 0;
	// Do it
	const char *name = luaL_checkstring(L, 2);
	Player *player = env->getPlayer(name);
	if(player == NULL){
		lua_pushnil(L);
		return 1;
	}
	PlayerSAO *sao = player->getPlayerSAO();
	if(sao == NULL){
		lua_pushnil(L);
		return 1;
	}
	// Put player on stack
	objectref_get_or_create(L, sao);
	return 1;
}

// EnvRef:get_objects_inside_radius(pos, radius)
int EnvRef::l_get_objects_inside_radius(lua_State *L)
{
	// Get the table insert function
	lua_getglobal(L, "table");
	lua_getfield(L, -1, "insert");
	int table_insert = lua_gettop(L);
	// Get environemnt
	EnvRef *o = checkobject(L, 1);
	ServerEnvironment *env = o->m_env;