aboutsummaryrefslogtreecommitdiff
path: root/src/lua/modules/time/je_lua_time.cpp
blob: e565eab2d700d05957ed4a6416a8d2405e3db954 (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
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
#include "SDL2/SDL.h"
#include "lua/common/je_lua_common.h"
#include "lua/modules/luax.h"
#include "libjin/jin.h"
#include "../types.h"

using namespace JinEngine::Time;

namespace JinEngine
{
    namespace Lua
    {

        static struct
        {
            float previous; 
            float current;
        } context;

        LUA_IMPLEMENT int l_sec(lua_State* L)
        {
            luax_pushnumber(L, getSecond()); 
            return 1;
        }

        LUA_IMPLEMENT int l_sleep(lua_State* L)
        {
            double sec = luax_checknumber(L, 1);
            sleep(sec * 1000.0f);
            return 0;
        }

        LUA_IMPLEMENT int l_newTimer(lua_State* L)
        {
            Proxy* proxy = luax_newinstance(L, JIN_TIME_TIMER);
            proxy->bind(new Shared<Timer>(new Timer(), JIN_TIME_TIMER));
            return 1;
        }

        LUA_IMPLEMENT int l_getDelta(lua_State* L)
        {
            luax_pushnumber(L, context.current - context.previous);
            return 1;
        }

        LUA_IMPLEMENT int l_step(lua_State* L)
        {
            context.previous = context.current; 
            context.current = getSecond();
            return 0;
        }

        LUA_IMPLEMENT const luaL_Reg f[] = {
            { "second",   l_sec      },
            { "sleep",    l_sleep    },
            { "newTimer", l_newTimer },
            { "step",     l_step     },
            { "getDelta", l_getDelta },
            { 0,          0          },
        };
    
        LUA_PORT int luaopen_Timer(lua_State* L);

        LUA_EXPORT int luaopen_time(lua_State* L)
        {
            luaopen_Timer(L);

            luax_newlib(L, f); 
            return 1; 
        }

    } // namespace Lua
} // namespace JinEngine