Diff: snake.cpp

Revision:

1:897160a1a3ae

Child:

2:44e4a6ecdbef

diff -r b7f1f47bb26a -r 897160a1a3ae snake.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/snake.cpp	Tue May 26 12:17:59 2020 +0000
@@ -0,0 +1,157 @@
+#include "snake.h"
+
+Snake::Snake()
+{
+
+}
+
+Snake::~Snake()
+{
+
+}
+
+
+void Snake::init ()
+{
+
+    //WIDTH =84 HEIGHT = 42 //snakebody[0] is initialised may have to initilaise the other 2 og snake parts
+    _length = 1;
+    _gameover = false;
+    _score = 0;
+    _direction = up;
+
+}
+
+
+
+int Snake::set_direction(Gamepad &pad)     //int type as Directions is an enum
+{
+
+    Directions _direction;
+
+
+    if (pad.A_pressed()) {
+
+        _direction = right;
+
+
+    }
+
+    if (pad.B_pressed()) {
+
+        _direction = left;     //check these are orrecrt
+
+    }
+
+    if (pad.X_pressed()) {
+
+        _direction = up;
+
+    }
+
+    if (pad.Y_pressed()) {
+
+
+        _direction = down;
+
+    }
+
+    else {
+
+        _direction = _direction;
+    }
+    return _direction;
+}
+
+
+void Snake::move_and_draw_snake(N5110 &lcd)
+{
+    Vector2D Snakehead = _engine.get_Snakehead();           //initialises Snakehead value
+    Vector2D *snakebody = new Vector2D [_length];
+
+    snakebody[0].x = Snakehead.x;
+    snakebody[0].y = Snakehead.y;
+
+    while(1) {
+        if (_direction == up) {
+            Snakehead.y++;                              // alters Snakehead initial value
+        }
+        if (_direction == down) {             //this part is needed to keep the snake running continually
+            Snakehead.y--;
+        }
+        if (_direction == left) {
+            Snakehead.x--;
+        }
+        if (_direction == right) {
+            Snakehead.x++;                         //updates the head position before rendering so when it draws i=1 the 0 position will be new
+        }
+
+        for(int i=1; i<=_length; i++) {                     //0 being head of snake  so snakepos[1]=snakepos[0] which is the head - moving up one place
+            snakebody[i].x = snakebody[i-1].x;
+            snakebody[i].y = snakebody[i-1].y;
+            lcd.setPixel(snakebody[i].x, snakebody[i].y, 1);
+            if(snakebody[i].x == Snakehead.x && snakebody[i].y == Snakehead.y) {  //is snakebody[0] being plotted
+                _gameover = true;
+
+            }
+        }
+    }
+
+
+}
+
+
+void Snake::gameover_true(N5110 &lcd)      //taking action if crash has occured
+{
+    if (_gameover == true) {
+
+        lcd.clear();
+        lcd.refresh();
+        lcd.printString( "  Game Over L ", 0, 2 );
+        lcd.printString ("score: _score ",15, 15);    //Need to add button to return to main screen / restart
+
+    }
+
+    else {
+
+
+    }
+}
+
+
+
+void Snake::check_if_scored(N5110 &lcd, Gamepad &pad)
+{
+    Vector2D Snakehead = _engine.get_Snakehead();
+    Vector2D Applepos = _engine.get_Applepos();                           //need to code clear apple and make sure apple isnt spawning every time
+
+    if(Snakehead.x == Applepos.x && Snakehead.y == Applepos.y) {
+
+
+        _score++;
+        _length = _length++;
+        _engine.set_Applepos(lcd);    //randomises new values for _apx,_apy and draws on lcd -- the position is not needed until we compare it to Snakehead
+        pad.tone(1500.0,0.5);          //need to clear apple
+        pad.leds_on();
+        wait(0.5);
+        pad.leds_off();
+
+    }
+}
+
+void Snake::check_wall_collisions()     // Vector2D *&snakebody hopefully this points to values stored in snakebody then can compare to snakehead
+{
+    Vector2D Snakehead = _engine.get_Snakehead();
+
+
+    if (Snakehead.x == 0 || Snakehead.x == 84 || Snakehead.y == 0 || Snakehead.y == 42) {   //how do i access snakehead.headx
+
+        _gameover = true;
+    } else {
+        _gameover = false;
+
+    }
+}
+
+
+