[518] | 1 | #include "nv/engine/particle_manager.hh"
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| 2 |
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| 3 | #include "nv/lua/lua_raw.hh"
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| 4 | #include "nv/lua/lua_math.hh"
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| 5 |
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| 6 | static int nv_psystem_emitter_closure( lua_State * L )
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| 7 | {
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| 8 | luaL_checktype( L, 1, LUA_TTABLE );
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| 9 | lua_settop( L, 1 );
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| 10 | lua_pushvalue( L, lua_upvalueindex( 1 ) ); // type
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| 11 | lua_setfield( L, 1, "sub_type" );
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| 12 | lua_pushliteral( L, "emitter" );
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| 13 | lua_setfield( L, 1, "type" );
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| 14 | return 1;
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| 15 | }
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| 16 |
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| 17 | static int nv_psystem_affector_closure( lua_State * L )
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| 18 | {
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| 19 | luaL_checktype( L, 1, LUA_TTABLE );
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| 20 | lua_settop( L, 1 );
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| 21 | lua_pushvalue( L, lua_upvalueindex( 1 ) ); // type
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| 22 | lua_setfield( L, 1, "sub_type" );
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| 23 | lua_pushliteral( L, "affector" );
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| 24 | lua_setfield( L, 1, "type" );
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| 25 | return 1;
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| 26 | }
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| 27 |
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| 28 | static int nv_psystem_emitter( lua_State * L )
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| 29 | {
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| 30 | luaL_checkstring( L, 1 );
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| 31 | lua_settop( L, 1 );
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| 32 | lua_pushcclosure( L, nv_psystem_emitter_closure, 1 );
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| 33 | return 1;
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| 34 | }
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| 35 |
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| 36 | static int nv_psystem_affector( lua_State * L )
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| 37 | {
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| 38 | luaL_checkstring( L, 1 );
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| 39 | lua_settop( L, 1 );
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| 40 | lua_pushcclosure( L, nv_psystem_affector_closure, 1 );
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| 41 | return 1;
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| 42 | }
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| 43 |
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| 44 |
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| 45 | void nv::particle_manager::initialize( lua::state* state )
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| 46 | {
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| 47 | lua_resource_manager_base::initialize( state );
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| 48 | lua_State* L = state->get_raw();
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| 49 | lua_pushcfunction( L, nv_psystem_emitter );
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| 50 | lua_setglobal( L, "emitter" );
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| 51 | lua_pushcfunction( L, nv_psystem_affector );
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| 52 | lua_setglobal( L, "affector" );
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| 53 | }
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| 54 |
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| 55 | bool nv::particle_manager::load_resource( lua::table_guard& table, shash64 id )
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| 56 | {
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| 57 | particle_system_data* data = new particle_system_data;
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| 58 | data->quota = table.get<uint32>("quota", 1024 );
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| 59 | // data->local = table.get<bool>("local_space", false );
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| 60 | data->accurate_facing = table.get<bool>("accurate_facing", false );
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| 61 | data->emitter_count = 0;
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| 62 | data->affector_count = 0;
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[539] | 63 | data->orientation = particle_orientation( table["orientation"].get_uint32() );
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| 64 | data->origin = particle_origin( table["origin"].get_uint32() );
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[518] | 65 |
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[539] | 66 | data->common_up = math::normalize( table["common_up"].as( vec3(1,0,0) ) );
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| 67 | data->common_dir = math::normalize( table["common_dir"].as( vec3(0,1,0) ) );
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[518] | 68 |
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| 69 | vec2 def_size = table.get<vec2>("size", vec2(0.1,0.1) );
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| 70 | uint32 elements = table.get_size();
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| 71 | for ( uint32 i = 0; i < elements; ++i )
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| 72 | {
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| 73 | lua::table_guard element( table, i+1 );
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[539] | 74 | const_string type = element["type"].get_string();
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| 75 | const_string sub_type = element["sub_type"].get_string();
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[518] | 76 | if ( type == "emitter" )
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| 77 | {
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| 78 | if ( data->emitter_count < MAX_PARTICLE_EMITTERS )
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| 79 | {
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| 80 | particle_emitter_data& edata = data->emitters[ data->emitter_count ];
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| 81 | edata.emitter_func = particle_engine::get_emitter( sub_type );
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| 82 | if ( edata.emitter_func == nullptr )
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| 83 | {
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| 84 | NV_LOG_WARNING( "Unknown emitter type in particle system! (", sub_type, ")" );
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| 85 | break;
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| 86 | }
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| 87 |
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[539] | 88 | edata.position = element["position"].as( vec3() );
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| 89 | edata.extents = element["extents"].as( vec3(1,1,1) );
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| 90 | edata.extents[0] = element["width"].as( edata.extents[0] );
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| 91 | edata.extents[1] = element["depth"].as( edata.extents[1] );
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| 92 | edata.extents[2] = element["height"].as( edata.extents[2] );
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| 93 | edata.extents[0] = element["radius"].as( edata.extents[0] );
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| 94 | edata.iextents = element["inner_extents"].as( vec3() );
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| 95 | edata.iextents[0] = element["inner_width"].as( edata.iextents[0] );
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| 96 | edata.iextents[1] = element["inner_depth"].as( edata.iextents[1] );
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| 97 | edata.iextents[2] = element["inner_height"].as( edata.iextents[2] );
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| 98 | edata.iextents[0] = element["inner_radius"].as( edata.iextents[0] );
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[518] | 99 | edata.hextents = 0.5f * edata.extents;
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| 100 | edata.ihextents = 0.5f * edata.iextents;
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[539] | 101 | edata.precise = element["precise"].as( false );
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| 102 | edata.square = element["square"].as( true );
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| 103 | vec4 color = element["color"].as( vec4(1,1,1,1) );
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| 104 | edata.color_min = element["color_min"].as( color );
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| 105 | edata.color_max = element["color_max"].as( color );
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| 106 | vec2 size = element["size"].as( def_size );
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| 107 | edata.size_min = element["size_min"].as( size );
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| 108 | edata.size_max = element["size_max"].as( size );
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| 109 | edata.angle = element["angle"].as( 0.0f );
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| 110 | float velocity = element["velocity"].as( 0.0f );
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| 111 | edata.velocity_min = element["velocity_min"].as( velocity );
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| 112 | edata.velocity_max = element["velocity_max"].as( velocity );
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| 113 | float lifetime = element["lifetime"].as( 1.0f );
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| 114 | edata.lifetime_min = element["lifetime_min"].as( lifetime );
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| 115 | edata.lifetime_max = element["lifetime_max"].as( lifetime );
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| 116 | float duration = element["duration"].as( 0.0f );
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| 117 | edata.duration_min = element["duration_min"].as( duration );
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| 118 | edata.duration_max = element["duration_max"].as( duration );
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| 119 | float repeat = element["repeat_delay"].as( 0.0f );
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| 120 | edata.repeat_min = element["repeat_delay_min"].as( repeat );
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| 121 | edata.repeat_max = element["repeat_delay_max"].as( repeat );
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[518] | 122 |
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[539] | 123 | edata.rate = element["rate"].as( 1.0f );
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| 124 | edata.dir = math::normalize( element["direction"].as( vec3(0,1,0) ) );
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[518] | 125 |
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| 126 | edata.odir = vec3( 0, 0, 1 );
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| 127 | if ( edata.dir != vec3( 0, 1, 0 ) && edata.dir != vec3( 0, -1, 0 ) )
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| 128 | edata.odir = math::normalize( math::cross( edata.dir, vec3( 0, 1, 0 ) ) );
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| 129 | edata.cdir = math::cross( edata.dir, edata.odir );
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| 130 |
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| 131 | data->emitter_count++;
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| 132 | }
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| 133 | else
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| 134 | {
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| 135 | NV_LOG_ERROR( "Too many emitters (", MAX_PARTICLE_EMITTERS, " is MAX)!" );
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| 136 | }
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| 137 | }
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| 138 | else if ( type == "affector" )
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| 139 | {
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| 140 | if ( data->affector_count < MAX_PARTICLE_AFFECTORS )
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| 141 | {
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| 142 | particle_affector_data& adata = data->affectors[ data->affector_count ];
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| 143 | auto afuncs = particle_engine::get_affector( sub_type );
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| 144 | if ( !afuncs.init || !afuncs.process )
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| 145 | {
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| 146 | NV_LOG_WARNING( "Unknown affector type in particle system! (", sub_type, ")" );
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| 147 | continue;
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| 148 | }
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| 149 | adata.process = afuncs.process;
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| 150 | if ( !afuncs.init( &element, &adata ) )
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| 151 | {
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| 152 | NV_LOG_WARNING( "Bad data passed to ", sub_type, " affector in particle system!" );
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| 153 | }
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| 154 | data->affector_count++;
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| 155 | }
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| 156 | else
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| 157 | {
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| 158 | NV_LOG_ERROR( "Too many affectors (", MAX_PARTICLE_AFFECTORS, " is MAX)!" );
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| 159 | }
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| 160 | }
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| 161 | else
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| 162 | {
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| 163 | NV_LOG_WARNING( "Unknown element in particle system! (", type, ")" );
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| 164 | }
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| 165 | }
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| 166 | add( id, data );
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| 167 | return true;
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| 168 | }
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| 169 |
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