Diff: Road.cpp

Revision:

0:ca7cb51e9fd1

Child:

1:54512aca944d

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Road.cpp	Sun Nov 10 23:02:16 2019 +0000
@@ -0,0 +1,78 @@
+#include <math.h>
+#include "Road.h"
+
+Road::Road() {
+    active_cars = 0x00;
+    last_car = NULL;
+        
+    intersection_car = -1;
+    next_release = 0;
+    num_cars = 0;
+    
+    pending_car = new AccCar(num_cars, this, pow(2, num_cars));
+    pending_car->set_target_speed(rand() % 11 + 5);
+}
+
+int Road::try_enter_car(int time) {
+    if( next_release <= time && pending_car != NULL ) {
+        if( last_car == NULL || last_car->position >= pending_car->speed + 2 ) {           
+            pending_car->set_forward_car(last_car);
+            pending_car->reset();
+            active_cars = active_cars | pending_car->flag;
+            
+            last_car = pending_car;
+            cars[num_cars] = pending_car;
+            
+            num_cars++;
+            
+            if(num_cars < MAX_CARS) {
+                pending_car = new AccCar(num_cars, this, pow(2, num_cars));
+                pending_car->set_target_speed(rand() % 11 + 5);
+                
+                next_release = time + rand() % 3;
+            } else {
+                pending_car = NULL;   
+            }
+            
+            return last_car->id;
+        }
+    }
+    
+    return -1;
+}
+ 
+ void Road::let_cars_update() {
+     if( active_cars > 0x00 ) {
+        go_flags.set(active_cars);
+     }
+ }
+ 
+ void Road::wait_for_car_update() {
+     if( active_cars > 0x00 ) {
+        done_flags.wait_all(active_cars);
+     }
+ }
+ 
+ int Road::check_exit_cars(int cars[]) {
+     int arr_index = 0;
+     
+     for( int i=0; i < num_cars; i++ ) {
+         if( this->cars[i]->position >= 100 ) {
+            cars[arr_index] = this->cars[i]->id;
+            arr_index++;
+            
+            active_cars = active_cars ^ this->cars[i]->flag;
+            
+            this->cars[i]->position = -1;
+            this->cars[i]->speed = -1;
+         }
+     }
+     
+     return arr_index;   
+ }
+ 
+ void Road::print_status() {
+     for( int i=0; i < num_cars; i++ ) {
+         printf("Car %d: %d -> %d\r\n", cars[i]->id, cars[i]->position, cars[i]->speed); 
+     }   
+ }
\ No newline at end of file