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slight sim change and engine code fomat

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This commit is contained in:
Leandro Afonso
2025-11-22 21:45:16 +00:00
parent 8f97aab836
commit ce7f642246
2 changed files with 196 additions and 181 deletions
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59
main/src/main/java/sd/engine/SimulationEngine.java
View File

@@ -41,12 +41,14 @@ public class SimulationEngine {
private final PriorityQueue<Event> eventQueue;
/**
* A map storing all intersections in the simulation, keyed by their ID (e.g., "Cr1").
* A map storing all intersections in the simulation, keyed by their ID (e.g.,
* "Cr1").
*/
private final Map<String, Intersection> intersections;
/**
* Responsible for creating new vehicles according to the configured arrival model.
* Responsible for creating new vehicles according to the configured arrival
* model.
*/
private final VehicleGenerator vehicleGenerator;
@@ -100,7 +102,7 @@ public class SimulationEngine {
default:
return baseTime;
}
}
}
/**
* Initializes the simulation. This involves:
@@ -128,9 +130,9 @@ public class SimulationEngine {
* and adds their corresponding traffic lights.
*/
private void setupIntersections() {
String[] intersectionIds = {"Cr1", "Cr2", "Cr3", "Cr4", "Cr5"};
String[] intersectionIds = { "Cr1", "Cr2", "Cr3", "Cr4", "Cr5" };
// Note: "North" is commented out, so it won't be created.
String[] directions = {/*"North",*/ "South", "East", "West"};
String[] directions = { /* "North", */ "South", "East", "West" };
for (String id : intersectionIds) {
Intersection intersection = new Intersection(id);
@@ -144,8 +146,7 @@ public class SimulationEngine {
id + "-" + direction,
direction,
greenTime,
redTime
);
redTime);
intersection.addTrafficLight(light);
}
@@ -157,7 +158,8 @@ public class SimulationEngine {
/**
* Configures how vehicles should be routed between intersections.
* This hardcoded logic defines the "map" of the city.
* * For example, `intersections.get("Cr1").configureRoute("Cr2", "East");` means
* * For example, `intersections.get("Cr1").configureRoute("Cr2", "East");`
* means
* "at intersection Cr1, any vehicle whose *next* destination is Cr2
* should be sent to the 'East' traffic light queue."
*/
@@ -176,12 +178,12 @@ public class SimulationEngine {
intersections.get("Cr3").configureRoute("S", "South"); // "S" is the exit
// Cr4 routing
//intersections.get("Cr4").configureRoute("Cr1", "North");
// intersections.get("Cr4").configureRoute("Cr1", "North");
intersections.get("Cr4").configureRoute("Cr5", "East");
// Cr5 routing
//intersections.get("Cr5").configureRoute("Cr2", "North");
//intersections.get("Cr5").configureRoute("Cr4", "West");
// intersections.get("Cr5").configureRoute("Cr2", "North");
// intersections.get("Cr5").configureRoute("Cr4", "West");
intersections.get("Cr5").configureRoute("S", "East"); // "S" is the exit
}
@@ -208,7 +210,8 @@ public class SimulationEngine {
*
* @param light The {@link TrafficLight} that will change state.
* @param intersectionId The ID of the intersection where the light is located.
* @param delay The time (in seconds) from {@code currentTime} when the change should occur.
* @param delay The time (in seconds) from {@code currentTime} when the
* change should occur.
*/
private void scheduleTrafficLightChange(TrafficLight light, String intersectionId, double delay) {
double changeTime = currentTime + delay;
@@ -220,7 +223,8 @@ public class SimulationEngine {
* Schedules the next {@link EventType#VEHICLE_GENERATION} event.
* The time of the next arrival is determined by the {@link VehicleGenerator}.
*
* @param baseTime The time from which to calculate the next arrival (usually {@code currentTime}).
* @param baseTime The time from which to calculate the next arrival (usually
* {@code currentTime}).
*/
private void scheduleNextVehicleGeneration(double baseTime) {
// Get the absolute time for the next arrival.
@@ -278,7 +282,8 @@ public class SimulationEngine {
/**
* Main event processing logic.
* Delegates the event to the appropriate handler method based on its {@link EventType}.
* Delegates the event to the appropriate handler method based on its
* {@link EventType}.
*
* @param event The {@link Event} to be processed.
*/
@@ -308,7 +313,8 @@ public class SimulationEngine {
* at its first destination intersection.
* 4. Schedules the *next* {@link EventType#VEHICLE_GENERATION} event.
* (Note: This line is commented out in the original, which might be a bug,
* as it implies only one vehicle is ever generated. It should likely be active.)
* as it implies only one vehicle is ever generated. It should likely be
* active.)
*/
private void handleVehicleGeneration() {
Vehicle vehicle = vehicleGenerator.generateVehicle("V" + (++vehicleCounter), currentTime);
@@ -344,7 +350,8 @@ public class SimulationEngine {
* current intersection using {@link Intersection#receiveVehicle(Vehicle)}.
* 5. Attempts to process the vehicle immediately if its light is green.
*
* @param event The arrival event, containing the {@link Vehicle} and intersection ID.
* @param event The arrival event, containing the {@link Vehicle} and
* intersection ID.
*/
private void handleVehicleArrival(Event event) {
Vehicle vehicle = (Vehicle) event.getData();
@@ -379,7 +386,8 @@ public class SimulationEngine {
return;
}
// Add vehicle to the appropriate traffic light queue based on its next destination
// Add vehicle to the appropriate traffic light queue based on its next
// destination
intersection.receiveVehicle(vehicle);
// Try to process the vehicle immediately if its light is already green
@@ -393,7 +401,7 @@ public class SimulationEngine {
* @param vehicle The vehicle to process.
* @param intersection The intersection where the vehicle is.
*/
private void tryProcessVehicle(Vehicle vehicle, Intersection intersection) { //FIXME
private void tryProcessVehicle(Vehicle vehicle, Intersection intersection) { // FIXME
// Find the direction (and light) this vehicle is queued at
// This logic is a bit flawed: it just finds the *first* non-empty queue
// A better approach would be to get the light from the vehicle's route
@@ -463,7 +471,8 @@ public class SimulationEngine {
* Handles {@link EventType#CROSSING_END}.
* 1. Updates intersection and vehicle statistics.
* 2. Checks the vehicle's *next* destination.
* 3. If the next destination is the exit ("S"), call {@link #handleVehicleExit(Vehicle)}.
* 3. If the next destination is the exit ("S"), call
* {@link #handleVehicleExit(Vehicle)}.
* 4. Otherwise, schedule a {@link EventType#VEHICLE_ARRIVAL} event at the
* *next* intersection, after some travel time.
*
@@ -489,7 +498,8 @@ public class SimulationEngine {
String nextDest = vehicle.getCurrentDestination();
if (nextDest != null && !nextDest.equals("S")) {
// Route to the *next* intersection
// Travel time varies by vehicle type: tmoto = 0.5 × tcarro, tcaminhão = 4 × tmoto
// Travel time varies by vehicle type: tmoto = 0.5 × tcarro, tcaminhão = 4 ×
// tmoto
double travelTime = calculateTravelTime(vehicle.getType());
double arrivalTime = currentTime + travelTime;
Event arrivalEvent = new Event(arrivalTime, EventType.VEHICLE_ARRIVAL, vehicle, nextDest);
@@ -519,7 +529,8 @@ public class SimulationEngine {
/**
* Handles {@link EventType#TRAFFIC_LIGHT_CHANGE}.
* 1. Toggles the light's state (RED to GREEN or GREEN to RED).
* 2. If the light just turned GREEN, call {@link #processGreenLight(TrafficLight, Intersection)}
* 2. If the light just turned GREEN, call
* {@link #processGreenLight(TrafficLight, Intersection)}
* to process any waiting vehicles.
* 3. Schedules the *next* state change for this light based on its
* green/red time duration.
@@ -592,7 +603,8 @@ public class SimulationEngine {
}
/**
* Utility method to get the configured crossing time for a given {@link VehicleType}.
* Utility method to get the configured crossing time for a given
* {@link VehicleType}.
*
* @param type The type of vehicle.
* @return The crossing time in seconds.
@@ -623,6 +635,7 @@ public class SimulationEngine {
/**
* Gets the current simulation time.
*
* @return The time in virtual seconds.
*/
public double getCurrentTime() {
@@ -632,6 +645,7 @@ public class SimulationEngine {
/**
* Gets a map of all intersections in the simulation.
* Returns a copy to prevent external modification.
*
* @return A {@link Map} of intersection IDs to {@link Intersection} objects.
*/
public Map<String, Intersection> getIntersections() {
@@ -640,6 +654,7 @@ public class SimulationEngine {
/**
* Gets the statistics collector instance.
*
* @return The {@link StatisticsCollector}.
*/
public StatisticsCollector getStatisticsCollector() {

74
main/src/main/resources/simulation.properties
View File

@@ -46,54 +46,54 @@ simulation.arrival.fixed.interval=2.0
# === TRAFFIC LIGHT TIMINGS ===
# Format: trafficlight.<intersection>.<direction>.<state>=<seconds>
# Intersection 1
trafficlight.Cr1.North.green=30.0
trafficlight.Cr1.North.red=30.0
trafficlight.Cr1.South.green=30.0
trafficlight.Cr1.South.red=30.0
trafficlight.Cr1.East.green=30.0
trafficlight.Cr1.East.red=30.0
trafficlight.Cr1.West.green=30.0
trafficlight.Cr1.West.red=30.0
# Intersection 1 (Entry point - balanced)
trafficlight.Cr1.North.green=20.0
trafficlight.Cr1.North.red=40.0
trafficlight.Cr1.South.green=20.0
trafficlight.Cr1.South.red=40.0
trafficlight.Cr1.East.green=20.0
trafficlight.Cr1.East.red=40.0
trafficlight.Cr1.West.green=20.0
trafficlight.Cr1.West.red=40.0
# Intersection 2
trafficlight.Cr2.North.green=25.0
trafficlight.Cr2.North.red=35.0
trafficlight.Cr2.South.green=25.0
trafficlight.Cr2.South.red=35.0
trafficlight.Cr2.East.green=35.0
trafficlight.Cr2.East.red=25.0
trafficlight.Cr2.West.green=35.0
trafficlight.Cr2.West.red=25.0
# Intersection 2 (Main hub - shorter cycles, favor East-West)
trafficlight.Cr2.North.green=12.0
trafficlight.Cr2.North.red=36.0
trafficlight.Cr2.South.green=12.0
trafficlight.Cr2.South.red=36.0
trafficlight.Cr2.East.green=18.0
trafficlight.Cr2.East.red=30.0
trafficlight.Cr2.West.green=18.0
trafficlight.Cr2.West.red=30.0
# Intersection 3
trafficlight.Cr3.North.green=30.0
# Intersection 3 (Path to exit - favor East)
trafficlight.Cr3.North.green=15.0
trafficlight.Cr3.North.red=30.0
trafficlight.Cr3.South.green=30.0
trafficlight.Cr3.South.green=15.0
trafficlight.Cr3.South.red=30.0
trafficlight.Cr3.East.green=30.0
trafficlight.Cr3.East.red=30.0
trafficlight.Cr3.West.green=30.0
trafficlight.Cr3.East.green=20.0
trafficlight.Cr3.East.red=25.0
trafficlight.Cr3.West.green=15.0
trafficlight.Cr3.West.red=30.0
# Intersection 4
trafficlight.Cr4.North.green=30.0
# Intersection 4 (Favor East toward Cr5)
trafficlight.Cr4.North.green=15.0
trafficlight.Cr4.North.red=30.0
trafficlight.Cr4.South.green=30.0
trafficlight.Cr4.South.green=15.0
trafficlight.Cr4.South.red=30.0
trafficlight.Cr4.East.green=30.0
trafficlight.Cr4.East.red=30.0
trafficlight.Cr4.West.green=30.0
trafficlight.Cr4.East.green=20.0
trafficlight.Cr4.East.red=25.0
trafficlight.Cr4.West.green=15.0
trafficlight.Cr4.West.red=30.0
# Intersection 5
trafficlight.Cr5.North.green=30.0
# Intersection 5 (Near exit - favor East)
trafficlight.Cr5.North.green=15.0
trafficlight.Cr5.North.red=30.0
trafficlight.Cr5.South.green=30.0
trafficlight.Cr5.South.green=15.0
trafficlight.Cr5.South.red=30.0
trafficlight.Cr5.East.green=30.0
trafficlight.Cr5.East.red=30.0
trafficlight.Cr5.West.green=30.0
trafficlight.Cr5.East.green=22.0
trafficlight.Cr5.East.red=23.0
trafficlight.Cr5.West.green=15.0
trafficlight.Cr5.West.red=30.0
# === VEHICLE CONFIGURATION ===
@@ -118,4 +118,4 @@ vehicle.travel.time.heavy.multiplier=2.0
# === STATISTICS ===
# Interval between dashboard updates (seconds)
statistics.update.interval=10.0
statistics.update.interval=1.0