ELEC2645 (2019/20) / Mbed 2 deprecated ELEC2645_Project_el18lg

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Dependencies:   mbed

Snake/Snake.cpp@2:c33ff63c0813, 2020-05-24 (annotated)

Committer:
el18lg
Date:
Sun May 24 20:12:08 2020 +0000
Revision:
2:c33ff63c0813
Parent:
1:bdafa20e71a0 
Progress with snake movement in map;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
el18lg 2:c33ff63c0813 1 #include "Snake.h"
el18lg 2:c33ff63c0813 2
el18lg 2:c33ff63c0813 3 // nothing doing in the constructor and destructor
el18lg 2:c33ff63c0813 4 Snake::Snake()
el18lg 2:c33ff63c0813 5 {
el18lg 2:c33ff63c0813 6
el18lg 2:c33ff63c0813 7 }
el18lg 2:c33ff63c0813 8
el18lg 2:c33ff63c0813 9 Snake::~Snake()
el18lg 2:c33ff63c0813 10 {
el18lg 2:c33ff63c0813 11
el18lg 2:c33ff63c0813 12 }
el18lg 2:c33ff63c0813 13
el18lg 2:c33ff63c0813 14 void Snake::init(int x,int height,int width,int speed)
el18lg 2:c33ff63c0813 15 {
el18lg 2:c33ff63c0813 16 _x = x; // x value on screen is fixed
el18lg 2:c33ff63c0813 17 _y = HEIGHT/2 - height/2; // y depends on height of screen and height of snake
el18lg 2:c33ff63c0813 18 _height = height;
el18lg 2:c33ff63c0813 19 _width = width;
el18lg 2:c33ff63c0813 20 _speed = 1; // default speed
el18lg 2:c33ff63c0813 21
el18lg 2:c33ff63c0813 22 }
el18lg 2:c33ff63c0813 23
el18lg 2:c33ff63c0813 24 void Snake::draw(N5110 &lcd)
el18lg 2:c33ff63c0813 25 {
el18lg 2:c33ff63c0813 26 // draw paddle in screen buffer.
el18lg 2:c33ff63c0813 27 lcd.drawRect(_x,_y,_width,_height,FILL_BLACK);
el18lg 2:c33ff63c0813 28 }
el18lg 2:c33ff63c0813 29
el18lg 2:c33ff63c0813 30 void Snake::update(Direction d,float mag)
el18lg 2:c33ff63c0813 31 {
el18lg 2:c33ff63c0813 32 _speed = int(mag*4.0f); // scale is arbitrary, could be changed in future
el18lg 2:c33ff63c0813 33
el18lg 2:c33ff63c0813 34 // update y value depending on direction of movement
el18lg 2:c33ff63c0813 35 // North is decrement as origin is at the top-left so decreasing moves up
el18lg 2:c33ff63c0813 36 if (d == N) {
el18lg 2:c33ff63c0813 37 _y-=_speed;
el18lg 2:c33ff63c0813 38 } else if (d == S) {
el18lg 2:c33ff63c0813 39 _y+=_speed;
el18lg 2:c33ff63c0813 40 }
el18lg 2:c33ff63c0813 41
el18lg 2:c33ff63c0813 42 // check the y origin to ensure that the paddle doesn't go off screen
el18lg 2:c33ff63c0813 43 if (_y < 1) {
el18lg 2:c33ff63c0813 44 _y = 1;
el18lg 2:c33ff63c0813 45 }
el18lg 2:c33ff63c0813 46 if (_y > HEIGHT - _height - 1) {
el18lg 2:c33ff63c0813 47 _y = HEIGHT - _height - 1;
el18lg 2:c33ff63c0813 48 }
el18lg 2:c33ff63c0813 49 }
el18lg 2:c33ff63c0813 50
el18lg 2:c33ff63c0813 51
el18lg 2:c33ff63c0813 52
el18lg 2:c33ff63c0813 53 Vector2D Snake::get_pos() {
el18lg 2:c33ff63c0813 54 Vector2D p = {_x,_y};
el18lg 2:c33ff63c0813 55 return p;
el18lg 2:c33ff63c0813 56 }