cmake windows
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SimpleGame/FMOD/api/core/examples/3d.cpp
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SimpleGame/FMOD/api/core/examples/3d.cpp
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/*==============================================================================
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3D Example
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Copyright (c), Firelight Technologies Pty, Ltd 2004-2025.
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This example shows how to basic 3D positioning of sounds.
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For information on using FMOD example code in your own programs, visit
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https://www.fmod.com/legal
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==============================================================================*/
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#include "fmod.hpp"
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#include "common.h"
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const int INTERFACE_UPDATETIME = 50; // 50ms update for interface
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const float DISTANCEFACTOR = 1.0f; // Units per meter. I.e feet would = 3.28. centimeters would = 100.
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int FMOD_Main()
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{
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FMOD::System *system;
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FMOD::Sound *sound1, *sound2, *sound3;
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FMOD::Channel *channel1 = 0, *channel2 = 0, *channel3 = 0;
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FMOD_RESULT result;
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bool listenerflag = true;
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FMOD_VECTOR listenerpos = { 0.0f, 0.0f, -1.0f * DISTANCEFACTOR };
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void *extradriverdata = 0;
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Common_Init(&extradriverdata);
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/*
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Create a System object and initialize.
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*/
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result = FMOD::System_Create(&system);
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ERRCHECK(result);
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result = system->init(100, FMOD_INIT_NORMAL, extradriverdata);
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ERRCHECK(result);
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/*
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Set the distance units. (meters/feet etc).
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*/
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result = system->set3DSettings(1.0, DISTANCEFACTOR, 1.0f);
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ERRCHECK(result);
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/*
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Load some sounds
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*/
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result = system->createSound(Common_MediaPath("drumloop.wav"), FMOD_3D, 0, &sound1);
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ERRCHECK(result);
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result = sound1->set3DMinMaxDistance(0.5f * DISTANCEFACTOR, 5000.0f * DISTANCEFACTOR);
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ERRCHECK(result);
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result = sound1->setMode(FMOD_LOOP_NORMAL);
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ERRCHECK(result);
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result = system->createSound(Common_MediaPath("jaguar.wav"), FMOD_3D, 0, &sound2);
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ERRCHECK(result);
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result = sound2->set3DMinMaxDistance(0.5f * DISTANCEFACTOR, 5000.0f * DISTANCEFACTOR);
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ERRCHECK(result);
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result = sound2->setMode(FMOD_LOOP_NORMAL);
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ERRCHECK(result);
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result = system->createSound(Common_MediaPath("swish.wav"), FMOD_2D, 0, &sound3);
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ERRCHECK(result);
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/*
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Play sounds at certain positions
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*/
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{
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FMOD_VECTOR pos = { -10.0f * DISTANCEFACTOR, 0.0f, 0.0f };
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FMOD_VECTOR vel = { 0.0f, 0.0f, 0.0f };
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result = system->playSound(sound1, 0, true, &channel1);
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ERRCHECK(result);
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result = channel1->set3DAttributes(&pos, &vel);
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ERRCHECK(result);
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result = channel1->setPaused(false);
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ERRCHECK(result);
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}
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{
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FMOD_VECTOR pos = { 15.0f * DISTANCEFACTOR, 0.0f, 0.0f };
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FMOD_VECTOR vel = { 0.0f, 0.0f, 0.0f };
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result = system->playSound(sound2, 0, true, &channel2);
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ERRCHECK(result);
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result = channel2->set3DAttributes(&pos, &vel);
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ERRCHECK(result);
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result = channel2->setPaused(false);
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ERRCHECK(result);
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}
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/*
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Main loop
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*/
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do
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{
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Common_Update();
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if (Common_BtnPress(BTN_ACTION1))
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{
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bool paused;
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channel1->getPaused(&paused);
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channel1->setPaused(!paused);
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}
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if (Common_BtnPress(BTN_ACTION2))
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{
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bool paused;
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channel2->getPaused(&paused);
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channel2->setPaused(!paused);
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}
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if (Common_BtnPress(BTN_ACTION3))
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{
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result = system->playSound(sound3, 0, false, &channel3);
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ERRCHECK(result);
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}
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if (Common_BtnPress(BTN_MORE))
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{
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listenerflag = !listenerflag;
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}
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if (!listenerflag)
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{
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if (Common_BtnDown(BTN_LEFT))
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{
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listenerpos.x -= 1.0f * DISTANCEFACTOR;
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if (listenerpos.x < -24 * DISTANCEFACTOR)
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{
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listenerpos.x = -24 * DISTANCEFACTOR;
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}
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}
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if (Common_BtnDown(BTN_RIGHT))
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{
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listenerpos.x += 1.0f * DISTANCEFACTOR;
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if (listenerpos.x > 23 * DISTANCEFACTOR)
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{
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listenerpos.x = 23 * DISTANCEFACTOR;
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}
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}
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}
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// ==========================================================================================
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// UPDATE THE LISTENER
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// ==========================================================================================
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{
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static float t = 0;
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static FMOD_VECTOR lastpos = { 0.0f, 0.0f, 0.0f };
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FMOD_VECTOR forward = { 0.0f, 0.0f, 1.0f };
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FMOD_VECTOR up = { 0.0f, 1.0f, 0.0f };
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FMOD_VECTOR vel;
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if (listenerflag)
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{
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listenerpos.x = (float)sin(t * 0.05f) * 24.0f * DISTANCEFACTOR; // left right pingpong
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}
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// ********* NOTE ******* READ NEXT COMMENT!!!!!
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// vel = how far we moved last FRAME (m/f), then time compensate it to SECONDS (m/s).
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vel.x = (listenerpos.x - lastpos.x) * (1000 / INTERFACE_UPDATETIME);
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vel.y = (listenerpos.y - lastpos.y) * (1000 / INTERFACE_UPDATETIME);
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vel.z = (listenerpos.z - lastpos.z) * (1000 / INTERFACE_UPDATETIME);
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// store pos for next time
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lastpos = listenerpos;
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result = system->set3DListenerAttributes(0, &listenerpos, &vel, &forward, &up);
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ERRCHECK(result);
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t += (30 * (1.0f / (float)INTERFACE_UPDATETIME)); // t is just a time value .. it increments in 30m/s steps in this example
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}
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result = system->update();
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ERRCHECK(result);
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// Create small visual display.
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char s[80] = "|.............<1>......................<2>.......|";
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s[(int)(listenerpos.x / DISTANCEFACTOR) + 25] = 'L';
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Common_Draw("==================================================");
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Common_Draw("3D Example.");
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Common_Draw("Copyright (c) Firelight Technologies 2004-2025.");
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Common_Draw("==================================================");
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Common_Draw("");
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Common_Draw("Press %s to toggle sound 1 (16bit Mono 3D)", Common_BtnStr(BTN_ACTION1));
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Common_Draw("Press %s to toggle sound 2 (8bit Mono 3D)", Common_BtnStr(BTN_ACTION2));
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Common_Draw("Press %s to play a sound (16bit Stereo 2D)", Common_BtnStr(BTN_ACTION3));
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Common_Draw("Press %s or %s to move listener in still mode", Common_BtnStr(BTN_LEFT), Common_BtnStr(BTN_RIGHT));
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Common_Draw("Press %s to toggle listener auto movement", Common_BtnStr(BTN_MORE));
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Common_Draw("Press %s to quit", Common_BtnStr(BTN_QUIT));
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Common_Draw("");
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Common_Draw(s);
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Common_Sleep(INTERFACE_UPDATETIME - 1);
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} while (!Common_BtnPress(BTN_QUIT));
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/*
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Shut down
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*/
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result = sound1->release();
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ERRCHECK(result);
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result = sound2->release();
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ERRCHECK(result);
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result = sound3->release();
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ERRCHECK(result);
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result = system->close();
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ERRCHECK(result);
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result = system->release();
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ERRCHECK(result);
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Common_Close();
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return 0;
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}
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