aboutsummaryrefslogtreecommitdiff
path: root/trainhud.lua
blob: 601b28fed7d514f4dd41d2028a62aef3d5e4d20e (plain) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56

 
advtrains.hud = {}

minetest.register_on_leaveplayer(function(player)
advtrains.hud[player:get_player_name()] = nil
end)

function advtrains.set_trainhud(name, text)
	local hud = advtrains.hud[name]
	local player=minetest.get_player_by_name(name)
	if not hud then
		hud = {}
		advtrains.hud[name] = hud
		hud.id = player:hud_add({
			hud_elem_type = "text",
			name = "ADVTRAINS",
			number = 0xFFFFFF,
			position = {x=0.5, y=0.7},
			offset = {x=0, y=0},
			text = text,
			scale = {x=200, y=60},
			alignment = {x=0, y=0},
		})
		hud.oldText=text
		return
	elseif hud.oldText ~= text then
		player:hud_change(hud.id, "text", text)
		hud.oldText=text
	end
end
function advtrains.hud_train_format(train, flip)
	local fct=1
	if flip then fct=-1 end
	if not train then return "" end
	local max=advtrains.all_traintypes[train.traintype].max_speed or 10
	local vel=advtrains.abs_ceil(train.velocity)*fct
	local tvel=advtrains.abs_ceil(train.tarvelocity)*fct
	local firstLine, secondLine
	if vel<0 then
		firstLine="Speed: <"..string.rep("_", vel+max)..string.rep("+", -vel).."|"..string.rep("_", max)..">"
	else
		firstLine="Speed: <"..string.rep("_", max).."|"..string.rep("+", vel)..string.rep("_", max-vel)..">"
	end
	if tvel<0 then
		secondLine="Target: <"..string.rep("_", tvel+max)..string.rep("+", -tvel).."|"..string.rep("_", max)..">"
	else
		secondLine="Target: <"..string.rep("_", max).."|"..string.rep("+", tvel)..string.rep("_", max-tvel)..">"
	end
	if vel==0 then
		return firstLine.."\n"..secondLine.."\nup for forward, down for backward, use to get off train.  "
	elseif vel<0 then
		return firstLine.."\n"..secondLine.."\nPress up to decelerate, down to accelerate, sneak to stop."
	elseif vel>0 then
		return firstLine.."\n"..secondLine.."\nPress up to accelerate, down to decelerate, sneak to stop."
	end
end
generated by cgit v1.2.3 (git 2.39.1) at 2025-07-19 16:24:18 +0000
'>394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 
/*
Minetest
Copyright (C) 2013 kwolekr, Ryan Kwolek <kwolekr@minetest.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.
*/


#include "lua_api/l_vmanip.h"
#include "lua_api/l_internal.h"
#include "common/c_content.h"
#include "common/c_converter.h"
#include "emerge.h"
#include "environment.h"
#include "map.h"
#include "server.h"
#include "mapgen.h"

// garbage collector
int LuaVoxelManip::gc_object(lua_State *L)
{
	LuaVoxelManip *o = *(LuaVoxelManip **)(lua_touserdata(L, 1));
	delete o;

	return 0;
}

int LuaVoxelManip::l_read_from_map(lua_State *L)
{
	MAP_LOCK_REQUIRED;

	LuaVoxelManip *o = checkobject(L, 1);
	MMVManip *vm = o->vm;

	v3s16 bp1 = getNodeBlockPos(check_v3s16(L, 2));
	v3s16 bp2 = getNodeBlockPos(check_v3s16(L, 3));
	sortBoxVerticies(bp1, bp2);

	vm->initialEmerge(bp1, bp2);

	push_v3s16(L, vm->m_area.MinEdge);
	push_v3s16(L, vm->m_area.MaxEdge);

	return 2;
}

int LuaVoxelManip::l_get_data(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;

	LuaVoxelManip *o = checkobject(L, 1);
	bool use_buffer  = lua_istable(L, 2);

	MMVManip *vm = o->vm;

	u32 volume = vm->m_area.getVolume();

	if (use_buffer)
		lua_pushvalue(L, 2);
	else
		lua_newtable(L);

	for (u32 i = 0; i != volume; i++) {
		lua_Integer cid = vm->m_data[i].getContent();
		lua_pushinteger(L, cid);
		lua_rawseti(L, -2, i + 1);
	}

	return 1;
}

int LuaVoxelManip::l_set_data(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;

	LuaVoxelManip *o = checkobject(L, 1);
	MMVManip *vm = o->vm;

	if (!lua_istable(L, 2))
		return 0;

	u32 volume = vm->m_area.getVolume();
	for (u32 i = 0; i != volume; i++) {
		lua_rawgeti(L, 2, i + 1);
		content_t c = lua_tointeger(L, -1);

		vm->m_data[i].setContent(c);

		lua_pop(L, 1);
	}

	return 0;
}

int LuaVoxelManip::l_write_to_map(lua_State *L)
{
	MAP_LOCK_REQUIRED;

	LuaVoxelManip *o = checkobject(L, 1);
	MMVManip *vm = o->vm;

	vm->blitBackAll(&o->modified_blocks);

	return 0;
}

int LuaVoxelManip::l_get_node_at(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;

	INodeDefManager *ndef = getServer(L)->getNodeDefManager();

	LuaVoxelManip *o = checkobject(L, 1);
	v3s16 pos        = check_v3s16(L, 2);

	pushnode(L, o->vm->getNodeNoExNoEmerge(pos), ndef);
	return 1;
}

int LuaVoxelManip::l_set_node_at(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;

	INodeDefManager *ndef = getServer(L)->getNodeDefManager();

	LuaVoxelManip *o = checkobject(L, 1);
	v3s16 pos        = check_v3s16(L, 2);
	MapNode n        = readnode(L, 3, ndef);

	o->vm->setNodeNoEmerge(pos, n);

	return 0;
}

int LuaVoxelManip::l_update_liquids(lua_State *L)
{
	GET_ENV_PTR;

	LuaVoxelManip *o = checkobject(L, 1);

	Map *map = &(env->getMap());
	INodeDefManager *ndef = getServer(L)->getNodeDefManager();
	MMVManip *vm = o->vm;

	Mapgen mg;
	mg.vm   = vm;
	mg.ndef = ndef;

	mg.updateLiquid(&map->m_transforming_liquid,
			vm->m_area.MinEdge, vm->m_area.MaxEdge);

	return 0;
}

int LuaVoxelManip::l_calc_lighting(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;

	LuaVoxelManip *o = checkobject(L, 1);
	if (!o->is_mapgen_vm)
		return 0;

	INodeDefManager *ndef = getServer(L)->getNodeDefManager();
	EmergeManager *emerge = getServer(L)->getEmergeManager();
	MMVManip *vm = o->vm;

	v3s16 yblock = v3s16(0, 1, 0) * MAP_BLOCKSIZE;
	v3s16 fpmin  = vm->m_area.MinEdge;
	v3s16 fpmax  = vm->m_area.MaxEdge;
	v3s16 pmin   = lua_istable(L, 2) ? check_v3s16(L, 2) : fpmin + yblock;
	v3s16 pmax   = lua_istable(L, 3) ? check_v3s16(L, 3) : fpmax - yblock;
	bool propagate_shadow = lua_isboolean(L, 4) ? lua_toboolean(L, 4) : true;

	sortBoxVerticies(pmin, pmax);
	if (!vm->m_area.contains(VoxelArea(pmin, pmax)))
		throw LuaError("Specified voxel area out of VoxelManipulator bounds");

	Mapgen mg;
	mg.vm          = vm;
	mg.ndef        = ndef;
	mg.water_level = emerge->params.water_level;

	mg.calcLighting(pmin, pmax, fpmin, fpmax, propagate_shadow);

	return 0;
}

int LuaVoxelManip::l_set_lighting(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;

	LuaVoxelManip *o = checkobject(L, 1);
	if (!o->is_mapgen_vm)
		return 0;

	if (!lua_istable(L, 2))
		return 0;

	u8 light;
	light  = (getintfield_default(L, 2, "day",   0) & 0x0F);
	light |= (getintfield_default(L, 2, "night", 0) & 0x0F) << 4;

	MMVManip *vm = o->vm;

	v3s16 yblock = v3s16(0, 1, 0) * MAP_BLOCKSIZE;
	v3s16 pmin = lua_istable(L, 3) ? check_v3s16(L, 3) : vm->m_area.MinEdge + yblock;
	v3s16 pmax = lua_istable(L, 4) ? check_v3s16(L, 4) : vm->m_area.MaxEdge - yblock;

	sortBoxVerticies(pmin, pmax);
	if (!vm->m_area.contains(VoxelArea(pmin, pmax)))
		throw LuaError("Specified voxel area out of VoxelManipulator bounds");

	Mapgen mg;
	mg.vm = vm;

	mg.setLighting(light, pmin, pmax);

	return 0;
}

int LuaVoxelManip::l_get_light_data(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;

	LuaVoxelManip *o = checkobject(L, 1);
	MMVManip *vm = o->vm;

	u32 volume = vm->m_area.getVolume();

	lua_newtable(L);
	for (u32 i = 0; i != volume; i++) {
		lua_Integer light = vm->m_data[i].param1;
		lua_pushinteger(L, light);
		lua_rawseti(L, -2, i + 1);
	}

	return 1;
}

int LuaVoxelManip::l_set_light_data(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;

	LuaVoxelManip *o = checkobject(L, 1);
	MMVManip *vm = o->vm;

	if (!lua_istable(L, 2))
		return 0;

	u32 volume = vm->m_area.getVolume();
	for (u32 i = 0; i != volume; i++) {
		lua_rawgeti(L, 2, i + 1);
		u8 light = lua_tointeger(L, -1);

		vm->m_data[i].param1 = light;

		lua_pop(L, 1);
	}

	return 0;
}

int LuaVoxelManip::l_get_param2_data(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;

	LuaVoxelManip *o = checkobject(L, 1);
	MMVManip *vm = o->vm;

	u32 volume = vm->m_area.getVolume();

	lua_newtable(L);
	for (u32 i = 0; i != volume; i++) {
		lua_Integer param2 = vm->m_data[i].param2;
		lua_pushinteger(L, param2);
		lua_rawseti(L, -2, i + 1);
	}

	return 1;
}

int LuaVoxelManip::l_set_param2_data(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;

	LuaVoxelManip *o = checkobject(L, 1);
	MMVManip *vm = o->vm;

	if (!lua_istable(L, 2))
		return 0;

	u32 volume = vm->m_area.getVolume();
	for (u32 i = 0; i != volume; i++) {
		lua_rawgeti(L, 2, i + 1);
		u8 param2 = lua_tointeger(L, -1);

		vm->m_data[i].param2 = param2;

		lua_pop(L, 1);
	}

	return 0;
}

int LuaVoxelManip::l_update_map(lua_State *L)
{
	GET_ENV_PTR;

	LuaVoxelManip *o = checkobject(L, 1);
	if (o->is_mapgen_vm)
		return 0;

	Map *map = &(env->getMap());

	// TODO: Optimize this by using Mapgen::calcLighting() instead
	std::map<v3s16, MapBlock *> lighting_mblocks;
	std::map<v3s16, MapBlock *> *mblocks = &o->modified_blocks;

	lighting_mblocks.insert(mblocks->begin(), mblocks->end());

	map->updateLighting(lighting_mblocks, *mblocks);

	MapEditEvent event;
	event.type = MEET_OTHER;
	for (std::map<v3s16, MapBlock *>::iterator
		it = mblocks->begin();
		it != mblocks->end(); ++it)
		event.modified_blocks.insert(it->first);

	map->dispatchEvent(&event);

	mblocks->clear();

	return 0;
}

int LuaVoxelManip::l_was_modified(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;

	LuaVoxelManip *o = checkobject(L, 1);
	MMVManip *vm = o->vm;

	lua_pushboolean(L, vm->m_is_dirty);

	return 1;
}

int LuaVoxelManip::l_get_emerged_area(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;

	LuaVoxelManip *o = checkobject(L, 1);

	push_v3s16(L, o->vm->m_area.MinEdge);
	push_v3s16(L, o->vm->m_area.MaxEdge);

	return 2;
}

LuaVoxelManip::LuaVoxelManip(MMVManip *mmvm, bool is_mg_vm)
{
	this->vm           = mmvm;
	this->is_mapgen_vm = is_mg_vm;
}

LuaVoxelManip::LuaVoxelManip(Map *map)
{
	this->vm = new MMVManip(map);
	this->is_mapgen_vm = false;
}

LuaVoxelManip::LuaVoxelManip(Map *map, v3s16 p1, v3s16 p2)
{
	this->vm = new MMVManip(map);
	this->is_mapgen_vm = false;

	v3s16 bp1 = getNodeBlockPos(p1);
	v3s16 bp2 = getNodeBlockPos(p2);
	sortBoxVerticies(bp1, bp2);
	vm->initialEmerge(bp1, bp2);
}

LuaVoxelManip::~LuaVoxelManip()
{
	if (!is_mapgen_vm)
		delete vm;
}

// LuaVoxelManip()
// Creates an LuaVoxelManip and leaves it on top of stack
int LuaVoxelManip::create_object(lua_State *L)
{
	GET_ENV_PTR;

	Map *map = &(env->getMap());
	LuaVoxelManip *o = (lua_istable(L, 1) && lua_istable(L, 2)) ?
		new LuaVoxelManip(map, check_v3s16(L, 1), check_v3s16(L, 2)) :
		new LuaVoxelManip(map);

	*(void **)(lua_newuserdata(L, sizeof(void *))) = o;
	luaL_getmetatable(L, className);
	lua_setmetatable(L, -2);
	return 1;
}

LuaVoxelManip *LuaVoxelManip::checkobject(lua_State *L, int narg)
{
	NO_MAP_LOCK_REQUIRED;

	luaL_checktype(L, narg, LUA_TUSERDATA);

	void *ud = luaL_checkudata(L, narg, className);
	if (!ud)
		luaL_typerror(L, narg, className);

	return *(LuaVoxelManip **)ud;  // unbox pointer
}

void LuaVoxelManip::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);  // hide metatable from Lua getmetatable()

	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);  // drop metatable

	luaL_openlib(L, 0, methods, 0);  // fill methodtable
	lua_pop(L, 1);  // drop methodtable

	// Can be created from Lua (VoxelManip())
	lua_register(L, className, create_object);
}

const char LuaVoxelManip::className[] = "VoxelManip";
const luaL_reg LuaVoxelManip::methods[] = {
	luamethod(LuaVoxelManip, read_from_map),
	luamethod(LuaVoxelManip, get_data),
	luamethod(LuaVoxelManip, set_data),
	luamethod(LuaVoxelManip, get_node_at),
	luamethod(LuaVoxelManip, set_node_at),
	luamethod(LuaVoxelManip, write_to_map),
	luamethod(LuaVoxelManip, update_map),
	luamethod(LuaVoxelManip, update_liquids),
	luamethod(LuaVoxelManip, calc_lighting),
	luamethod(LuaVoxelManip, set_lighting),
	luamethod(LuaVoxelManip, get_light_data),
	luamethod(LuaVoxelManip, set_light_data),
	luamethod(LuaVoxelManip, get_param2_data),
	luamethod(LuaVoxelManip, set_param2_data),
	luamethod(LuaVoxelManip, was_modified),
	luamethod(LuaVoxelManip, get_emerged_area),
	{0,0}
};
generated by cgit v1.2.3 (git 2.39.1) at 2025-07-19 16:24:18 +0000