Diff: main.cpp

Revision:

20:980b37fde361

Parent:

18:e58a1f8e72ad

--- a/main.cpp	Tue May 08 12:51:40 2018 +0000
+++ b/main.cpp	Tue May 08 13:41:08 2018 +0000
@@ -7,17 +7,18 @@
 Student ID Number: 200975452
 Date:
 */
-
+///////////pre-processor directives////////////
 #include "mbed.h"
 #include "Gamepad.h"
 #include "N5110.h"
 #include "snake_engine.h"
 #include  "snake.h"
-
+/////////////objects///////////////
 N5110 lcd(PTC9,PTC0,PTC7,PTD2,PTD1,PTC11);
 
 Gamepad pad;
 snake_engine engine;
+////////////prototypes//////////////
 void init();
 void render();
 void welcome();
@@ -25,34 +26,34 @@
 
 
 
-
+/////////structure/////////
 struct UserInput {
     Direction d;
     float mag;
 };
-
+////////////functions//////////
 int main()
 {
     init();
     welcome();
     while (1) {
-                if ((engine.clision  == 1)) { 
+                if ((engine.clision  == 1)) { //wall collision check. if collision happens == 1. gameover. initialise
             init();
-            welcome();
-            render();  
-            wait(0.03f);
-            engine.clision = 0;
+            welcome();//back to welcompage
+            render();  //first draw initial frame
+            wait(0.03f);//frame period
+            engine.clision = 0;// no collision when it backs to welcomepage
         }
 
-        engine.read_input(pad);
-        engine.update(pad, lcd);
-        render();
+        engine.read_input(pad);//engine recive command from gamepad
+        engine.update(pad, lcd);//update all the functions
+        render();//draw the frame
         wait(0.05f);
-        reset();
+        reset();//initialise the reset page.
     }
 
 }
-void init()
+void init()//initialise the gamepad , lcd and engine
 {
     lcd.init();
     pad.init();
@@ -60,13 +61,13 @@
 }
 
 void render()
-{
+{    //clear screen , redraw the frame and game
     lcd.clear();
     engine.draw(lcd);
     lcd.refresh();
 }
 void welcome()
-{
+{//welcome page.
     lcd.printString("     Simple    ",0,1);
     lcd.printString("Snake Game",0,2);
     lcd.printString("   WEI WEI  ",0,3);
@@ -75,16 +76,16 @@
     lcd.refresh();
     lcd.clear();
     wait(0.5);
-    while ( pad.check_event(Gamepad::START_PRESSED) == false) {
+    while ( pad.check_event(Gamepad::START_PRESSED) == false) {//wait until the start button pressed
     }
 
 }
 
 void reset()
-{
-    if ( pad.check_event(Gamepad::BACK_PRESSED) == true) {
+{//game reset.
+    if ( pad.check_event(Gamepad::BACK_PRESSED) == true) {//if the back button pressed. returns to welcomepage.
         lcd.clear();
-        lcd.refresh();
+        lcd.refresh();//lcd clear screen and refresh
 
         init();
         welcome();