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Crizomb 2025-06-10 17:40:16 +02:00
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SimpleGame/fmodstudioapi20307linux/api/studio/examples/event_parameter.cpp Normal file
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/*==============================================================================
Event Parameter Example
Copyright (c), Firelight Technologies Pty, Ltd 2012-2025.
This example demonstrates how to control event playback using game parameters.
For information on using FMOD example code in your own programs, visit
https://www.fmod.com/legal
==============================================================================*/
#include "fmod_studio.hpp"
#include "fmod.hpp"
#include "common.h"
int FMOD_Main()
{
void *extraDriverData = NULL;
Common_Init(&extraDriverData);
FMOD::Studio::System* system = NULL;
ERRCHECK( FMOD::Studio::System::create(&system) );
ERRCHECK( system->initialize(1024, FMOD_STUDIO_INIT_NORMAL, FMOD_INIT_NORMAL, extraDriverData) );
FMOD::Studio::Bank* masterBank = NULL;
ERRCHECK( system->loadBankFile(Common_MediaPath("Master.bank"), FMOD_STUDIO_LOAD_BANK_NORMAL, &masterBank) );
FMOD::Studio::Bank* stringsBank = NULL;
ERRCHECK( system->loadBankFile(Common_MediaPath("Master.strings.bank"), FMOD_STUDIO_LOAD_BANK_NORMAL, &stringsBank) );
FMOD::Studio::Bank* sfxBank = NULL;
ERRCHECK( system->loadBankFile(Common_MediaPath("SFX.bank"), FMOD_STUDIO_LOAD_BANK_NORMAL, &sfxBank) );
FMOD::Studio::EventDescription* eventDescription = NULL;
ERRCHECK( system->getEvent("event:/Character/Player Footsteps", &eventDescription) );
// Find the parameter once and then set by handle
// Or we can just find by name every time but by handle is more efficient if we are setting lots of parameters
FMOD_STUDIO_PARAMETER_DESCRIPTION paramDesc;
ERRCHECK( eventDescription->getParameterDescriptionByName("Surface", &paramDesc) );
FMOD_STUDIO_PARAMETER_ID surfaceID = paramDesc.id;
FMOD::Studio::EventInstance* eventInstance = NULL;
ERRCHECK( eventDescription->createInstance(&eventInstance) );
// Make the event audible to start with
float surfaceParameterValue = 1.0f;
ERRCHECK( eventInstance->setParameterByID(surfaceID, surfaceParameterValue) );
do
{
Common_Update();
if (Common_BtnPress(BTN_MORE))
{
ERRCHECK( eventInstance->start() );
}
if (Common_BtnPress(BTN_ACTION1))
{
surfaceParameterValue = Common_Max(paramDesc.minimum, surfaceParameterValue - 1.0f);
ERRCHECK( eventInstance->setParameterByID(surfaceID, surfaceParameterValue) );
}
if (Common_BtnPress(BTN_ACTION2))
{
surfaceParameterValue = Common_Min(surfaceParameterValue + 1.0f, paramDesc.maximum);
ERRCHECK( eventInstance->setParameterByID(surfaceID, surfaceParameterValue) );
}
ERRCHECK( system->update() );
float userValue = 0.0f;
float finalValue = 0.0f;
ERRCHECK( eventInstance->getParameterByID(surfaceID, &userValue, &finalValue) );
Common_Draw("==================================================");
Common_Draw("Event Parameter Example.");
Common_Draw("Copyright (c) Firelight Technologies 2012-2025.");
Common_Draw("==================================================");
Common_Draw("");
Common_Draw("Surface Parameter = (user: %1.1f, final: %1.1f)", userValue, finalValue);
Common_Draw("");
Common_Draw("Surface Parameter:");
Common_Draw("Press %s to play event", Common_BtnStr(BTN_MORE));
Common_Draw("Press %s to decrease value", Common_BtnStr(BTN_ACTION1));
Common_Draw("Press %s to increase value", Common_BtnStr(BTN_ACTION2));
Common_Draw("");
Common_Draw("Press %s to quit", Common_BtnStr(BTN_QUIT));
Common_Sleep(50);
} while (!Common_BtnPress(BTN_QUIT));
ERRCHECK( system->release() );
Common_Close();
return 0;
}