please ignore me

felix thing

#include "arduino_simulator.h"

enum {
	RED, AMBER, GREEN,
	NUM_LIGHTS,
};

enum {
	SET_A,
	SET_B,
	MAX_LIGHT_AMT,
};

static int LIGHT_IDX = 0;
int TRAFFIC_LIGHT_SETS[NUM_LIGHTS][MAX_LIGHT_AMT];

const int PEDESTRIAN_LIGHT_PIN = 25;

void register_traffic_lights(int light_set[3]) {
	for (int i = 0; i < 3; i++) {
		pinMode(light_set[i], OUTPUT);
		TRAFFIC_LIGHT_SETS[LIGHT_IDX][i] = light_set[i];
	}
	LIGHT_IDX += 1;
}

void toggle_light(int pin, bool on) {
	digitalWrite(pin, on ? HIGH : LOW);

	// hack...
	if (pin == PEDESTRIAN_LIGHT_PIN) {
		Serial.print("PED ");
		Serial.print(on ? "ON" : "OFF");
		Serial.print('\n');
	}
}

void flash_light(int pin, int blink_count) {
	for (int i = 0; i < blink_count; i++) {
		toggle_light(pin, true);
		delay(25);
		toggle_light(pin, false);
		delay(25);
	}
}

// traffic_light sets the state of each light for
// the given traffic_light set.
void traffic_light(int light_set_idx, bool r, bool a, bool g) {
	if (light_set_idx < 0 || light_set_idx > LIGHT_IDX) {
		return;
	}

	int* light_set = TRAFFIC_LIGHT_SETS[light_set_idx];
	toggle_light(light_set[RED], r);
	toggle_light(light_set[AMBER], a);
	toggle_light(light_set[GREEN], g);

	Serial.print('L');

	// arrays are zero indexed, the assignment wants it to
	// start from 1 so add 1! i.e. light set 0 becomes L1
	// light set 1 becomes L2.
	Serial.print(light_set_idx + 1);

	Serial.print(" = ");

	Serial.print(r ? "ON" : "OFF");
	Serial.print(' ');
	Serial.print(a ? "ON" : "OFF");
	Serial.print(' ');
	Serial.print(g ? "ON" : "OFF");

	Serial.print('\n');
}

void setup() {
	int set_a[] = {14, 15, 16};
	register_traffic_lights(set_a);
	int set_b[] = {17, 18, 19};
	register_traffic_lights(set_b);

	pinMode(PEDESTRIAN_LIGHT_PIN, OUTPUT);
}

void four_phase_light(int light_idx) {
	// red light on
	traffic_light(light_idx, true, false, false);
	toggle_light(PEDESTRIAN_LIGHT_PIN, false);
	delay(3000);

	// red light & amber light on
	traffic_light(light_idx, true, true, false);
	toggle_light(PEDESTRIAN_LIGHT_PIN, false);
	delay(3000);

	// green light on
	traffic_light(light_idx, false, false, true);
	toggle_light(PEDESTRIAN_LIGHT_PIN, false);
	delay(3000);

	// amber light on
	traffic_light(light_idx, false, true, false);
	toggle_light(PEDESTRIAN_LIGHT_PIN, false);
	delay(3000);	

	// red light on
	traffic_light(light_idx, true, false, false);
	toggle_light(PEDESTRIAN_LIGHT_PIN, false);
}

// unused!
void match_four_phase_lights() {
	// red light on
	traffic_light(SET_A, true, false, false);
	traffic_light(SET_B, true, false, false);
	toggle_light(PEDESTRIAN_LIGHT_PIN, false);
	delay(3000);

	// red light & amber light on
	traffic_light(SET_A, true, true, false);
	traffic_light(SET_B, true, true, false);
	toggle_light(PEDESTRIAN_LIGHT_PIN, false);
	delay(3000);

	// green light on
	traffic_light(SET_A, false, false, true);
	traffic_light(SET_B, false, false, true);
	toggle_light(PEDESTRIAN_LIGHT_PIN, false);
	delay(3000);

	// amber light on
	traffic_light(SET_A, false, true, false);
	traffic_light(SET_B, false, true, false);
	toggle_light(PEDESTRIAN_LIGHT_PIN, false);
	delay(3000);

	// red light on!
	traffic_light(SET_A, true, false, false);
	traffic_light(SET_B, true, false, false);
	toggle_light(PEDESTRIAN_LIGHT_PIN, false);
}

void loop() {
	if (Serial.available() > 0) {
		if (Serial.read() != 'G') {
			return;
		}

		// flash the ped light and turn it off
		flash_light(PEDESTRIAN_LIGHT_PIN, 5);
		toggle_light(PEDESTRIAN_LIGHT_PIN, false);

		// start the lights!
		four_phase_light(SET_A);

		delay(6000);

		four_phase_light(SET_B);

		// both lights should be red.
		// turn PED light on!
		toggle_light(PEDESTRIAN_LIGHT_PIN, true);
		delay(15000);
	}
}

int main() {
	setup();
	while (true) {
		loop();
	}
}