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: main.cpp
- Revision:
- 10:19b250c7de5e
- Parent:
- 1:a3f43007030e
- Child:
- 11:1fd8fca23375
--- a/main.cpp Sun May 17 14:01:17 2020 +0000
+++ b/main.cpp Mon May 18 18:14:35 2020 +0000
@@ -16,18 +16,89 @@
* @date March, 2020
*/
-// includes
+///////// pre-processor directives ////////
#include "mbed.h"
#include "Gamepad.h"
#include "N5110.h"
+#include "Battle.h"
+
+#define PADDLE_WIDTH 2
+#define PADDLE_HEIGHT 8
+#define BALL_SIZE 2
+#define BALL_SPEED 3
+
+// structs
+struct UserInput {
+ Direction d;
+ float mag;
+};
+// objects
+N5110 lcd;
+Gamepad pad;
+Battle battle;
+
+// prototypes
+void init();
+void update_game(UserInput input);
+void render();
+void welcome();
+
+// functions
+int main()
+{
+ int fps = 6; // frames per second
+
+ init(); // initialise and then display welcome screen...
+ welcome(); // waiting for the user to start
+
+ render(); // first draw the initial frame
+ wait(1.0f/fps); // and wait for one frame period
-// objects
-Gamepad pad;
-N5110 lcd;
+ // game loop - read input, update the game state and render the display
+ while (1) {
+ //battle.read_input(pad);
+ //battle.update(pad);
+ render();
+ wait(1.0f/fps);
+ }
+}
-int main()
+// initialies all classes and libraries
+void init()
{
-
+ // need to initialise LCD and Gamepad
+ lcd.init();
+ pad.init();
+
+ // initialise the game
+ //battle.init();
+
}
+// this function draws each frame on the LCD
+void render()
+{
+ // clear screen, re-draw and refresh
+ lcd.clear();
+ //battle.draw(lcd);
+ lcd.refresh();
+}
+
+// simple splash screen displayed on start-up
+void welcome() {
+
+ lcd.printString("Space Invaders",0,1);
+ lcd.printString(" Press Start ",0,4);
+ lcd.refresh();
+
+ // wait flashing LEDs until start button is pressed
+ while ( pad.start_pressed() == false) {
+ lcd.setContrast( pad.read_pot1());
+ pad.leds_on();
+ wait(0.1);
+ pad.leds_off();
+ wait(0.1);
+ }
+
+}
\ No newline at end of file