Function Object_Script_Variable4_Link

src/object.c:23–47

* Link two variable4 values to eachother, and clean up existing values if * needed. * @param encodedFrom From where the link goes. * @param encodedTo To where the link goes. */

 * @param encodedTo To where the link goes.
 */
void Object_Script_Variable4_Link(uint16 encodedFrom, uint16 encodedTo)
{
	Object *objectFrom;
	Object *objectTo;

	if (!Tools_Index_IsValid(encodedFrom)) return;
	if (!Tools_Index_IsValid(encodedTo)) return;

	objectFrom = Tools_Index_GetObject(encodedFrom);
	objectTo = Tools_Index_GetObject(encodedTo);

	if (objectFrom == NULL) return;
	if (objectTo == NULL) return;

	if (objectFrom->script.variables[4] != objectTo->script.variables[4]) {
		Object_Script_Variable4_Clear(objectFrom);
		Object_Script_Variable4_Clear(objectTo);
	}
	if (objectFrom->script.variables[4] != 0) return;

	Object_Script_Variable4_Set(objectFrom, encodedTo);
	Object_Script_Variable4_Set(objectTo, encodedFrom);

	return;
}

/**
 * Set in a safe way the new value for variable4.