public static void register(String sourceName, String productName, float reactivity, float fissionRate) {
if(_reactions.containsKey(sourceName)) {
BRLog.warning("Overwriting %s => %s reaction mapping! Someone may be fiddling with Big Reactors game data!", sourceName, productName);
}
ReactorReaction mapping = new ReactorReaction(sourceName, productName, reactivity, fissionRate);
_reactions.put(sourceName, mapping);
}