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
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
|
/*
Minetest
Copyright (C) 2017 nerzhul, Loic Blot <loic.blot@unix-experience.fr>
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 <cassert>
#include <log.h>
#include "lua_api/l_modchannels.h"
#include "l_internal.h"
#include "modchannels.h"
int ModApiChannels::l_mod_channel_join(lua_State *L)
{
if (!lua_isstring(L, 1))
return 0;
std::string channel = luaL_checkstring(L, 1);
if (channel.empty())
return 0;
getGameDef(L)->joinModChannel(channel);
assert(getGameDef(L)->getModChannel(channel) != nullptr);
ModChannelRef::create(L, channel);
int object = lua_gettop(L);
lua_pushvalue(L, object);
return 1;
}
void ModApiChannels::Initialize(lua_State *L, int top)
{
API_FCT(mod_channel_join);
}
/*
* ModChannelRef
*/
ModChannelRef::ModChannelRef(const std::string &modchannel) :
m_modchannel_name(modchannel)
{
}
int ModChannelRef::l_leave(lua_State *L)
{
ModChannelRef *ref = checkobject(L, 1);
getGameDef(L)->leaveModChannel(ref->m_modchannel_name);
return 0;
}
int ModChannelRef::l_send_all(lua_State *L)
{
ModChannelRef *ref = checkobject(L, 1);
ModChannel *channel = getobject(L, ref);
if (!channel || !channel->canWrite())
return 0;
// @TODO serialize message
std::string message = luaL_checkstring(L, 2);
getGameDef(L)->sendModChannelMessage(channel->getName(), message);
return 0;
}
int ModChannelRef::l_is_writeable(lua_State *L)
{
ModChannelRef *ref = checkobject(L, 1);
ModChannel *channel = getobject(L, ref);
if (!channel)
return 0;
lua_pushboolean(L, channel->canWrite());
return 1;
}
void ModChannelRef::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
}
void ModChannelRef::create(lua_State *L, const std::string &channel)
{
ModChannelRef *o = new ModChannelRef(channel);
*(void **)(lua_newuserdata(L, sizeof(void *))) = o;
luaL_getmetatable(L, className);
lua_setmetatable(L, -2);
}
int ModChannelRef::gc_object(lua_State *L)
{
ModChannelRef *o = *(ModChannelRef **)(lua_touserdata(L, 1));
delete o;
return 0;
}
ModChannelRef *ModChannelRef::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 *(ModChannelRef **)ud; // unbox pointer
}
ModChannel *ModChannelRef::getobject(lua_State *L, ModChannelRef *ref)
{
return getGameDef(L)->getModChannel(ref->m_modchannel_name);
}
// clang-format off
const char ModChannelRef::className[] = "ModChannelRef";
const luaL_Reg ModChannelRef::methods[] = {
luamethod(ModChannelRef, leave),
luamethod(ModChannelRef, is_writeable),
luamethod(ModChannelRef, send_all),
{0, 0},
};
// clang-format on
|
