(PECL openal >= 0.1.0)
openal_source_get — Retrieve an OpenAL source property
sourceAn Open AL(Source) resource (previously created by openal_source_create()).
property
Property to get, one of:
AL_SOURCE_RELATIVE (int),
AL_SOURCE_STATE (int),
AL_PITCH (float),
AL_GAIN (float),
AL_MIN_GAIN (float),
AL_MAX_GAIN (float),
AL_MAX_DISTANCE (float),
AL_ROLLOFF_FACTOR (float),
AL_CONE_OUTER_GAIN (float),
AL_CONE_INNER_ANGLE (float),
AL_CONE_OUTER_ANGLE (float),
AL_REFERENCE_DISTANCE (float),
AL_POSITION (array(float,float,float)),
AL_VELOCITY (array(float,float,float)),
AL_DIRECTION (array(float,float,float)).
Returns the type associated with the property being retrieved
或者在失败时返回 false.