A config object

DLASystem.cpp

@@ -192,10 +192,10 @@ int DLASystem::checkStick() {
 
 
 // constructor
-DLASystem::DLASystem(std::ofstream csv_out, double stickProbability)
-        : stickProbability(stickProbability), csv_out(std::move(csv_out)) {
+DLASystem::DLASystem(Config config)
+        : stickProbability(config.stickProbability), csv_out(std::move(config.csv)), endNum(config.maxParticles) {
     cout << "creating system, gridSize " << gridSize << endl;
-    endNum = 1000;
+    rgen.setSeed(config.seed);
 
     // allocate memory for the grid, remember to free the memory in destructor
     grid = new int *[gridSize];
@@ -210,9 +210,6 @@ DLASystem::DLASystem(std::ofstream csv_out, double stickProbability)
 
     addRatio = 1.2;   // how much bigger the addCircle should be, compared to cluster radius
     killRatio = 1.7;   // how much bigger is the killCircle, compared to the addCircle
-
-    // this opens a logfile, if we want to...
-    //logfile.open("opfile.txt");
 }
 
 // destructor

DLASystem.h

@@ -15,6 +15,15 @@
 #include "Particle.h"
 #include "rnd.h"
 
+class Config {
+public:
+    int seed;
+    double stickProbability;
+    std::ofstream csv;
+    int maxParticles;
+    Config(int argc, char **argv);
+};
+
 class DLASystem {
 private:
     // these are private variables and functions that the user will not see
@@ -66,7 +75,7 @@ public:
     int lastParticleIsActive;
 
     // constructor
-    DLASystem(std::ofstream csv_out, double stickProbability);
+    DLASystem(Config config);
 
     // destructor
     ~DLASystem();

mainDLA.cpp

@@ -12,26 +12,32 @@ using std::endl;
 // this is a global pointer, which is how we access the system itself
 DLASystem *sys;
 
-int main(int argc, char **argv) {
-    int seed;
-    double stickProbability = 0.5;
-
-    if (argc != 3) {
-        return 1;
+Config::Config(int argc, char **argv) {
+    if (argc != 4) {
+        exit(1);
     } else {
-        seed = std::stoi(argv[1]);
-        stickProbability = std::stod(argv[2]);
+        this->seed = std::stoi(argv[1]);
+        this->stickProbability = std::stod(argv[2]);
+        this->maxParticles = std::stoi(argv[3]);
+
+        if (stickProbability <= 0 || stickProbability > 1) {
+            exit(1);
+        }
+
+        std::stringstream str;
+        // Ensure the output file name contains all information required to replicate data
+        str << "./out-" << seed << '-' << stickProbability << "-" << maxParticles << ".csv";
+        std::ofstream csv_out(str.str());
+        this->csv = std::move(csv_out);
     }
+}
 
-    cout << "Seed: " << seed << ", Stick P: " << stickProbability << endl;
-
-    std::stringstream str;
-    str << "./out-" << seed << '-' << stickProbability << ".csv";
-    std::ofstream csv_out(str.str());
+int main(int argc, char **argv) {
+    Config config(argc, argv);
+    cout << "Seed: " << config.seed << ", Stick P: " << config.stickProbability << endl;
 
     // create the system
-    sys = new DLASystem(std::move(csv_out), stickProbability);
-    sys->setSeed(seed);
+    sys = new DLASystem(std::move(config));
     sys->setRunning();
 
     /*