ELEC2645 (2019/20)
Helios Lyons 201239214
Dependencies: mbed
Brief
My aim for this project was to create a FRDM K64F adapted version of the classic Space Invaders by Tomohiro Nishikado. The game itself has a number of clear features to implement;
- Left to right movement for the player 'canon'
- A fixed amount of player lives
- Firing mechanics for both canon and invaders (hence collision systems)
- Random firing from remaining invaders
- Wave based combat
My own addition to these established ideas was Boss waves, featuring a single, larger sprite which fires at a faster interval than previous waves. The addition of a movement system using a basic for loop, as opposed to a velocity based system, will enhance the nostalgic feel of the game.
Gameplay
Movement is controlled with the joystick, moving the canon left or right. Fire by pressing A. Invaders spawn at set positions, but randomly fire at a set interval, which is higher for boss waves. Time is taken during each wave, and displayed at wave intervals, and if the play wins.
Controls are shown on the Gamepad below: (attribution: Craig A. Evans, ELEC2645 University of Leeds)
Diff: Bullet/Bullet.cpp
- Revision:
- 10:19b250c7de5e
- Parent:
- 9:6a245c8ce08e
- Child:
- 11:1fd8fca23375
diff -r 6a245c8ce08e -r 19b250c7de5e Bullet/Bullet.cpp
--- a/Bullet/Bullet.cpp Sun May 17 14:01:17 2020 +0000
+++ b/Bullet/Bullet.cpp Mon May 18 18:14:35 2020 +0000
@@ -3,6 +3,7 @@
#include "N5110.h"
#include "Gamepad.h"
#include "Canon.h"
+#include "Army.h"
Bullet::Bullet()
{
@@ -14,33 +15,39 @@
}
-void Bullet::init(int x, int y, int speed, bool canon)
+void Bullet::init(bool canon, int x, int y)
{
+ _canon = canon;
+
_x = x;
_y = y;
- _canon = canon;
+ int speed = 3;
Direction d = S;
if (_canon == true) {
d = N;
- _width = 2;
- _height = 3;
+ _width = 1;
+ _height = 2;
+ _velocity.x = speed;
+ _velocity.y = speed;
}
else {
d = S;
- _width = 2;
- _height = 2;
+ _width = 1;
+ _height = 1;
+ _velocity.x = -speed;
+ _velocity.y = -speed;
}
}
void Bullet::draw(N5110 &lcd)
{
- if (_canon == true) { // square bullets for players
+ if (_canon == true) { // square bullets for canon
lcd.drawRect(_x,_y,_width,_height,FILL_BLACK);
}
- else { // round 'bombs' for aliens
+ else { // round bombs for invaders
lcd.drawCircle(_x,_y,_width,FILL_BLACK);
}
}
@@ -53,16 +60,8 @@
void Bullet::set_velocity(Vector2D v)
{
- if (_canon == true) { // square bullets for players
- lcd.drawRect(_x,_y,_width,_height,FILL_BLACK);
- }
- else { // round 'bombs' for aliens
- lcd.drawCircle(_x,_y,_width,FILL_BLACK);
- }
-
-
_velocity.x = v.x;
- _velocity.y = v.y;
+ _velocity.y = v.y;
}
Vector2D Bullet::get_velocity()
@@ -70,21 +69,9 @@
Vector2D v = {_velocity.x,_velocity.y};
return v;
}
-
-int Bullet::get_x_pos()
-{
- return _x;
-}
-int Bullet::get_y_pos()
+Vector2D Bullet::get_pos()
{
- return _y;
-}
-
-/* Probably unnecessary
-void Bullet::set_pos(int x, int y)
-{
- _x = x;
- _y = y;
-}
-*/
\ No newline at end of file
+ Vector2D p = {_x,_y};
+ return p;
+}
\ No newline at end of file