1 | // Copyright (C) 2012-2013 ChaosForge / Kornel Kisielewicz
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2 | // http://chaosforge.org/
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3 | //
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4 | // This file is part of NV Libraries.
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5 | // For conditions of distribution and use, see copyright notice in nv.hh
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6 |
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7 | #include "nv/lua/lua_aux.hh"
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8 |
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9 | #include <utility>
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10 | #include "nv/lua/lua_raw.hh"
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11 | #include "nv/random.hh"
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12 |
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13 | static int nluaaux_table_copy( lua_State* L )
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14 | {
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15 | luaL_checktype( L, 1, LUA_TTABLE );
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16 | lua_settop( L, 1 );
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17 | nlua_shallowcopy( L, 1 );
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18 | return 1;
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19 | }
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20 |
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21 | static int nluaaux_table_deepcopy( lua_State* L )
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22 | {
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23 | luaL_checktype( L, 1, LUA_TTABLE );
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24 | lua_settop( L, 1 );
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25 | nlua_deepcopy( L, 1 );
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26 | return 0;
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27 | }
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28 |
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29 | static int nluaaux_table_icopy( lua_State* L )
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30 | {
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31 | luaL_checktype( L, 1, LUA_TTABLE );
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32 | lua_settop( L, 1 );
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33 | nlua_shallowicopy( L, 1 );
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34 | return 1;
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35 | }
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36 |
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37 | static int nluaaux_table_merge( lua_State* L )
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38 | {
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39 | luaL_checktype( L, 1, LUA_TTABLE );
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40 | luaL_checktype( L, 2, LUA_TTABLE );
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41 | lua_settop( L, 2 );
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42 | nlua_shallowmerge( L, 1 );
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43 | return 0;
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44 | }
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45 |
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46 | static int nluaaux_table_reversed( lua_State* L )
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47 | {
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48 | luaL_checktype( L, 1, LUA_TTABLE );
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49 | lua_settop( L, 1 );
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50 | nlua_pushreversed( L, 1 );
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51 | return 1;
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52 | }
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53 |
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54 | static int nluaaux_table_toset( lua_State* L )
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55 | {
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56 | luaL_checktype( L, 1, LUA_TTABLE );
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57 | lua_settop( L, 1 );
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58 | nlua_toset( L, 1 );
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59 | return 1;
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60 | }
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61 |
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62 | static int nluaaux_table_tokeyset( lua_State* L )
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63 | {
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64 | luaL_checktype( L, 1, LUA_TTABLE );
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65 | lua_settop( L, 1 );
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66 | nlua_tokeyset( L, 1 );
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67 | return 1;
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68 | }
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69 |
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70 | static const struct luaL_Reg nluaaux_table_aux_f [] = {
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71 | { "copy", nluaaux_table_copy },
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72 | { "deepcopy", nluaaux_table_deepcopy },
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73 | { "icopy", nluaaux_table_icopy },
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74 | { "merge", nluaaux_table_merge },
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75 | { "reversed", nluaaux_table_reversed },
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76 | { "toset", nluaaux_table_toset },
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77 | { "tokeyset", nluaaux_table_tokeyset },
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78 | { NULL, NULL }
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79 | };
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80 |
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81 | static int nluaaux_math_clamp( lua_State* L )
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82 | {
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83 | double v = luaL_checknumber( L, 1 );
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84 | double min = luaL_optnumber( L, 2, 0 );
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85 | double max = luaL_optnumber( L, 3, 1 );
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86 | if ( min > max ) luaL_argerror( L, 2, "min is larger than max!" );
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87 | lua_pushnumber( L, v < min ? 2 : ( v > max ? 3 : 1 ) );
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88 | return 1;
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89 | }
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90 |
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91 | static int nluaaux_math_dieroll( lua_State* L )
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92 | {
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93 | int dice = luaL_checkinteger( L, 1 );
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94 | int sides = luaL_checkinteger( L, 2 );
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95 | if ( dice < 1 ) luaL_argerror( L, 1, "die count lower than 1!" );
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96 | if ( sides < 1 ) luaL_argerror( L, 2, "side count lower than 1!" );
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97 | lua_pushnumber( L, nv::random::get().dice( dice, sides ) );
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98 | return 1;
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99 | }
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100 |
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101 | static int nluaaux_math_random( lua_State* L )
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102 | {
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103 | if ( lua_gettop( L ) == 0 )
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104 | {
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105 | lua_pushnumber( L, nv::random::get().frand(1.0f) );
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106 | }
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107 | else
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108 | {
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109 | if ( lua_gettop( L ) == 1 )
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110 | {
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111 | int arg1 = luaL_checkinteger( L, 1 );
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112 | if ( arg1 < 1 ) arg1 = 1;
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113 | lua_pushunsigned( L, nv::random::get().urange( 1, arg1 ) );
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114 | }
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115 | else
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116 | {
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117 | int arg1 = luaL_checkinteger( L, 1 );
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118 | int arg2 = luaL_checkinteger( L, 2 );
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119 | if (arg2 < arg1) std::swap( arg2, arg1 );
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120 | lua_pushinteger( L, nv::random::get().srange( arg1, arg2 ) );
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121 | }
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122 | }
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123 | return 1;
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124 | }
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125 |
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126 | static int nluaaux_math_randomseed( lua_State* L )
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127 | {
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128 | nv::random::get().set_seed( static_cast< nv::uint32 > ( L, 1 ) );
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129 | return 0;
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130 | }
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131 |
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132 | static const struct luaL_Reg nluaaux_math_aux_f [] = {
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133 | { "clamp", nluaaux_math_clamp },
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134 | { "random", nluaaux_math_random },
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135 | { "randomseed",nluaaux_math_randomseed },
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136 | { "dieroll", nluaaux_math_dieroll },
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137 | { NULL, NULL }
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138 | };
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139 |
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140 | void nlua_register_aux( lua_State* L )
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141 | {
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142 | nlua_register( L, "table", nluaaux_table_aux_f );
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143 | nlua_register( L, "math", nluaaux_math_aux_f );
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144 | }
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145 |
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