Diff: Engine/Engine.cpp

Revision:

23:ff9073e12106

Parent:

21:20478f086bc2

Child:

26:4253656c0755

diff -r 20478f086bc2 -r ff9073e12106 Engine/Engine.cpp
--- a/Engine/Engine.cpp	Sat Apr 20 14:46:50 2019 +0000
+++ b/Engine/Engine.cpp	Mon Apr 22 16:33:29 2019 +0000
@@ -1,5 +1,8 @@
 #include "Engine.h"
 
+// Reference for the technique used to generate random numbers.
+// [1] "rand" cplusplus. [Online] Available: http://www.cplusplus.com/reference/cstdlib/rand/ [Accessed: 22 April 2019]. 
+
 // Buffer to print updated score.
 char buffer[14];   
 
@@ -11,7 +14,7 @@
 void Engine::init() {
   reset_skater();
   reset_engine();
-  srand(time(NULL));  // Set up for generating random numbers
+  srand(time(NULL));  // Set up for generating random numbers, [1].
 }
 
 void Engine::check_reset(N5110 &lcd, Gamepad &gamepad) {
@@ -29,7 +32,7 @@
   lcd.clear();
   for (int i = 0; i < 40; i = i + 8) {  // Counter for y direction, sweeps top 
   // to bottom.
-    for (int j = 0; j < 84; j++) {  // Counter for x direction, sweeps L to R 
+    for (int j = 0; j < 84; j++) {  // Counter for x direction, sweeps L to R. 
       lcd.setPixel(j,i,true);
       lcd.setPixel(i,j,true);
       lcd.printString("TRY AGAIN",30,5);  
@@ -45,7 +48,7 @@
 
 void Engine::reset_skater() {
   _skater_direction = Left;
-  _start_platform_flag = true;  // For printing start text in EngineController
+  _start_platform_flag = true;  // For printing start text in EngineController.
   _skater.set_reset_flag(false);
   _moving_counter = 0;
   _jump_counter = 20; 
@@ -149,13 +152,13 @@
 
 void Engine::generate_lower_lines() {
   // Use a scaled random number to generate the length of the lower lines.
-  _length_1 = (rand() %20) + 10;   
+  _length_1 = (rand() %20) + 10; // [1].   
   _lower_platforms.set_line_1(_length_1);
   _lower_line_1 = _lower_platforms.get_line_1(); 
-  _length_2 = (rand() %20) + 10;      
+  _length_2 = (rand() %20) + 10; // [1].      
   _lower_platforms.set_line_2(_length_2);
   _lower_line_2 = _lower_platforms.get_line_2();
-  _length_3 = (rand() %20) + 10;      
+  _length_3 = (rand() %20) + 10; // [1].      
   _lower_platforms.set_line_3(_length_3);
   _lower_line_3 = _lower_platforms.get_line_3();
 }
@@ -213,7 +216,7 @@
     _coin_collision_flag = true;
     _player_score++;
     _coin.set_coin((rand() % 100),(abs(rand() % 100 - 20)));  // Place coin 
-    // on a constrained random position
+    // on a constrained random position, [1].
     gamepad.tone(1500, 0.05);  // Make noise on buzzer.
     wait(0.05);
     gamepad.tone(3000, 0.05);