ELEC2645 (2018/19) / Mbed 2 deprecated fy14lkaa

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Dependencies:   mbed

alien/alien.cpp@17:9da9d0d41fca, 2019-04-19 (annotated)

Committer:
fy14lkaa
Date:
Fri Apr 19 18:32:06 2019 +0000
Revision:
17:9da9d0d41fca
Parent:
16:cba54d0696dc
Child:
18:1c1a3fb0efae
added a function [Vector2D alien::get_pos()] in alien.cpp. This function used to return alien's position.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
fy14lkaa 10:13e6996223d5 1 #include "alien.h"
fy14lkaa 10:13e6996223d5 2
fy14lkaa 10:13e6996223d5 3
fy14lkaa 10:13e6996223d5 4 alien::alien()
fy14lkaa 10:13e6996223d5 5 {
fy14lkaa 10:13e6996223d5 6
fy14lkaa 10:13e6996223d5 7 }
fy14lkaa 10:13e6996223d5 8
fy14lkaa 10:13e6996223d5 9 alien::~alien()
fy14lkaa 10:13e6996223d5 10 {
fy14lkaa 10:13e6996223d5 11
fy14lkaa 10:13e6996223d5 12 }
fy14lkaa 10:13e6996223d5 13
fy14lkaa 10:13e6996223d5 14 void alien::init(int size,int speed)
fy14lkaa 10:13e6996223d5 15 {
fy14lkaa 10:13e6996223d5 16
fy14lkaa 11:df8ce6637022 17 _size = size;
fy14lkaa 11:df8ce6637022 18
fy14lkaa 11:df8ce6637022 19
fy14lkaa 13:9d6ee753eca6 20
fy14lkaa 11:df8ce6637022 21
fy14lkaa 11:df8ce6637022 22
fy14lkaa 11:df8ce6637022 23 srand(time(NULL));
fy14lkaa 11:df8ce6637022 24 int direction = rand() % 8; // randomise initial direction.
fy14lkaa 11:df8ce6637022 25
fy14lkaa 11:df8ce6637022 26 // 4 possibilities. Get random modulo and set velocities accordingly
fy14lkaa 11:df8ce6637022 27 if (direction == 0) {
fy14lkaa 11:df8ce6637022 28 _velocity.x = speed;
fy14lkaa 11:df8ce6637022 29 _velocity.y = speed;
fy14lkaa 11:df8ce6637022 30 } else if (direction == 1) {
fy14lkaa 11:df8ce6637022 31 _velocity.x = speed;
fy14lkaa 11:df8ce6637022 32 _velocity.y = -speed;
fy14lkaa 11:df8ce6637022 33 } else if (direction == 2) {
fy14lkaa 11:df8ce6637022 34 _velocity.x = speed;
fy14lkaa 11:df8ce6637022 35 _velocity.y = speed;
fy14lkaa 11:df8ce6637022 36 } else {
fy14lkaa 11:df8ce6637022 37 _velocity.x = -speed;
fy14lkaa 11:df8ce6637022 38 _velocity.y = -speed;
fy14lkaa 11:df8ce6637022 39 }
fy14lkaa 11:df8ce6637022 40 }
fy14lkaa 11:df8ce6637022 41
fy14lkaa 11:df8ce6637022 42
fy14lkaa 14:6c4bce33c1a1 43 void alien::draw(N5110 &lcd)
fy14lkaa 13:9d6ee753eca6 44 {
fy14lkaa 13:9d6ee753eca6 45 lcd.drawRect(_x,_y,_size,_size,FILL_BLACK);
fy14lkaa 13:9d6ee753eca6 46 }
fy14lkaa 13:9d6ee753eca6 47
fy14lkaa 14:6c4bce33c1a1 48 void alien::update()
fy14lkaa 14:6c4bce33c1a1 49 {
fy14lkaa 14:6c4bce33c1a1 50 _x += _velocity.x;
fy14lkaa 14:6c4bce33c1a1 51 _y += _velocity.y;
fy14lkaa 15:ebbd903455f0 52
fy14lkaa 15:ebbd903455f0 53 void alien::set_velocity(Vector2D v)
fy14lkaa 15:ebbd903455f0 54 {
fy14lkaa 15:ebbd903455f0 55 _velocity.x = v.x;
fy14lkaa 15:ebbd903455f0 56 _velocity.y = v.y;
fy14lkaa 14:6c4bce33c1a1 57 }
fy14lkaa 16:cba54d0696dc 58
fy14lkaa 16:cba54d0696dc 59 Vector2D alien::get_velocity()
fy14lkaa 16:cba54d0696dc 60 {
fy14lkaa 16:cba54d0696dc 61 Vector2D v = {_velocity.x,_velocity.y};
fy14lkaa 16:cba54d0696dc 62 return v;
fy14lkaa 15:ebbd903455f0 63 }
fy14lkaa 16:cba54d0696dc 64
fy14lkaa 17:9da9d0d41fca 65 Vector2D alien::get_pos()
fy14lkaa 17:9da9d0d41fca 66 {
fy14lkaa 17:9da9d0d41fca 67 Vector2D p = {_x,_y};
fy14lkaa 17:9da9d0d41fca 68 return p;
fy14lkaa 17:9da9d0d41fca 69 }