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
|
/**
* @file script.cpp
* Manages all Lua scripts.
*
* Copyright (C) 2019 Belle-Isle, Andrew <drumsetmonkey@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <script.hpp>
/*********************
* SYSTEM SPECIFIC *
*********************/
void ScriptSystem::configure([[maybe_unused]]entityx::EntityManager& entities,
[[maybe_unused]]entityx::EventManager& events)
{
this->manager = &entities;
this->events = &events;
events.subscribe<EntitySpawnEvent>(*this);
init();
}
void ScriptSystem::update([[maybe_unused]] entityx::EntityManager& entites,
[[maybe_unused]] entityx::EventManager& events,
[[maybe_unused]] entityx::TimeDelta dt)
{
}
void ScriptSystem::receive(const EntitySpawnEvent &toSpawn)
{
(void)toSpawn;
}
/*********************
* CLASS FUNCTIONS *
*********************/
int ScriptSystem::init(void)
{
lua.open_libraries(sol::lib::base);
scriptExport();
doFile();
return 0;
}
void ScriptSystem::doFile(void)
{
auto result = lua.script_file("Scripts/init.lua");
if (!result.valid()) {
std::cout << "Lua error: " << std::endl;
}
}
/********************
* SCRIPT PARSING *
********************/
#include <components/Position.hpp>
#include <components/Name.hpp>
#include <components/Render.hpp>
#include <components/Script.hpp>
void ScriptSystem::scriptExport()
{
std::function<sol::table(sol::table)> func =
[this](sol::table t){ return spawn(t);};
lua.new_usertype<Position>("Position",
sol::constructors<Position(float x, float y), Position()>(),
"x", &Position::x,
"y", &Position::y);
lua.new_usertype<Name>("Name",
sol::constructors<Name(std::string), Name()>(),
"value", &Name::name);
lua.new_usertype<Render>("Render",
sol::constructors<Render(std::string), Render()>(),
"visible", &Render::visible,
"texture", &Render::texture);
auto gamespace = lua["game"].get_or_create<sol::table>();
gamespace.set_function("spawn", func);
}
sol::table ScriptSystem::spawn(sol::object param)
{
sol::table* toRet;
if (param.get_type() == sol::type::table) {
sol::table tab = param;
entityx::Entity e = manager->create();
auto d = e.assign<Scripted>().get();
d->caller = lua.create_table();
toRet = &(d->caller);
*toRet = tab; // Copy table to our new entity to preserve functions
// this reduces the amount of work done in this function
// as well
if (tab["Position"] != nullptr) {
(*toRet)["Position"] =
e.assign<Position>(Position().FromLua(tab["Position"])).get();
}
if (tab["Name"] != nullptr) {
(*toRet)["Name"] =
e.assign<Name>(Name().FromLua(tab["Name"])).get();
}
if (tab["Render"] != nullptr) {
(*toRet)["Render"] =
e.assign<Render>(Render().FromLua(tab["Render"])).get();
}
} else {
std::cerr << "Parameter to spawn() must be a table!" << std::endl;
}
return *toRet;
}
|
