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Sequence generation no longer creates repeating colors more than twice #1

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Sequence generation no longer creates repeating colors more than twice #1

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31 changes: 25 additions & 6 deletions memorygame/memorygame.ino
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Original file line number Diff line number Diff line change
Expand Up @@ -30,6 +30,30 @@ unsigned short userPositionInSequence;
unsigned short n;
unsigned long count = 0;


// Create a new game sequence.
// Prevent generating sequence elements repeating more than twice in a row.
void generate_sequence(unsigned short *sequence, unsigned long max_game_sequence){
randomSeed(analogRead(0));
unsigned short second_prev;
unsigned short prev;

sequence[0] = random(0, 3);
second_prev = sequence[0];
sequence[1] = random(0, 3);
prev = sequence[1];

for (int i = 2; i < max_game_sequence; i++) {
sequence[i] = random(0, 3);
if(sequence[i] == second_prev || sequence[i] == prev){
// prevent 3 matching colors in a row (2 in row is ok)
sequence[i] = (sequence[i]+1)%4;
}
second_prev = prev;
prev = sequence[i];
}
}

void setup() {
pinMode(RED_LED, OUTPUT);
pinMode(GREEN_LED, OUTPUT);
Expand All @@ -56,12 +80,7 @@ void loop() {
if (debouncerGreen.fell()) {
digitalWrite(GREEN_LED, LOW);

// Create a new game sequence.
randomSeed(analogRead(0));

for (n = 0; n < MAX_GAME_SEQUENCE; n++) {
gameSequence[n] = random(RED_BUTTON, YELLOW_BUTTON + 1);
}
generate_sequence(gameSequence, MAX_GAME_SEQUENCE);

currentSequenceLength = 1;
currentDelay = 500;
Expand Down