ELEC2645 (2015/16)
ELEC2645 Embedded Systems Project (JOYSTICK)
Dependencies: N5110 SDFileSystem mbed
Diff: main.cpp
- Revision:
- 1:06958b7bbf65
- Parent:
- 0:1719e11ef162
- Child:
- 2:537b8388dc6a
--- a/main.cpp Wed May 04 23:47:13 2016 +0000
+++ b/main.cpp Thu May 05 15:03:15 2016 +0000
@@ -12,10 +12,11 @@
#include "mbed.h"
#include "N5110.h"
#include "SDFileSystem.h"
-#define JOYSTICK_TOLERANCE 0.05 //direction tolerance of joystick
+#define JOYSTICK_TOLERANCE 0.1 //direction tolerance of joystick
// VCC, SCE, RST, D/C, MOSI, SCLK, LED
N5110 lcd (PTE26 , PTA0 , PTC4 , PTD0 , PTD2 , PTD1 , PTC3);
+SDFileSystem sd(PTE3, PTE1, PTE2, PTE4, "sd");
void init_display();
void draw_screen();
@@ -24,22 +25,25 @@
void game_timer_isr();
void food_pos();
void snake_move();
+void snake_logic_1();
float refresh_rate = 10; //refresh screen in Hz
volatile int g_timer_flag = 0;
bool gameOver; //if game has ended
int pdirection;
int gamemode;
-const int width = 84 ; // screen width
-const int height = 48 ; // screen height
+const int width = (84 - 2) / 2 ; // screen width (playable area due to 2x size of snake)
+const int height = (48 - 4) / 2 ; // screen height
Ticker gameTimer;
Ticker gameTimer1;
+Ticker gameTimer2;
Ticker joystickTimer; // ticker timer for joystick poisition update
int fx,fy,Button,score; // global variables to hold data (control)
AnalogIn xAxis(A0);
AnalogIn yAxis(A1);
AnalogIn pot(A2);
+DigitalOut red_led(LED_RED);
@@ -96,22 +100,18 @@
void draw_screen()
{
lcd.clear();
- // for (int i = 0; i < width; i++) { // borders across
- // lcd.setPixel(i,47);
- // lcd.setPixel(i,0);
- // }
- // for (int j = 0; j < height; j++) { // borders vertical
- // lcd.setPixel(0,j);
- // lcd.setPixel(83,j);
- // }
- lcd.drawRect(0,0,83,47,0); // borders square
- //lcd.setPixel(snake.hx,snake.hy); //print snake head position
+
+ lcd.drawRect(0,1,83,45,0); // borders square
for (int q = 0; q < snake.length ; q++) { //print snake
- lcd.setPixel (snake.tailx[q],snake.taily[q]);
+ //lcd.setPixel (snake.tailx[q],snake.taily[q]);
+ lcd.drawRect ((snake.tailx[q]*2),(snake.taily[q]*2),1,1,1);
+ // red_led = 0;
+
}
- lcd.setPixel(snake.hx,snake.hy); //print snake head position
- lcd.setPixel (fx,fy); //print food position
+ //lcd.setPixel(snake.hx,snake.hy); //print snake head position
+ lcd.drawRect ((fx * 2), (fy * 2), 1,1,1);
+ //lcd.setPixel (fx,fy); //print food position
lcd.refresh(); // update display
}
@@ -151,43 +151,59 @@
}
-void snake_move()
+void snake_move() //move the coordinate of the snake head, if CENTRE, checks for pdirection and repeats.
{
-
- if (joystick.direction == CENTRE) {
- if (pdirection == 0) {
- snake.hx-- ;
- } else if (pdirection == 1) {
- snake.hy++ ;
- } else if (pdirection == 2) {
- snake.hx++ ;
- } else if (pdirection == 3) {
- snake.hy-- ;
- } else {
- }
+ // red_led = 0;
+ if (pdirection == 0 && joystick.direction == RIGHT) { // disable going backwards
+ snake.hx--;
+ } else if (pdirection == 1 && joystick.direction == DOWN) {
+ snake.hy++;
+ } else if (pdirection == 2 && joystick.direction == LEFT) {
+ snake.hx++;
+ } else if (pdirection == 3 && joystick.direction == UP) {
+ snake.hy--;
} else {
- if (joystick.direction == LEFT) {
- snake.hx-- ;
- pdirection = 0;
- } else if (joystick.direction == UP) {
- snake.hy++ ;
- pdirection = 1;
- } else if (joystick.direction == RIGHT) {
- snake.hx++ ;
- pdirection = 2;
- } else if (joystick.direction == DOWN) {
- snake.hy-- ;
- pdirection = 3;
+
+ if (joystick.direction == CENTRE) {
+ if (pdirection == 0) {
+ snake.hx-- ;
+ } else if (pdirection == 1) {
+ snake.hy++ ;
+ } else if (pdirection == 2) {
+ snake.hx++ ;
+ } else if (pdirection == 3) {
+ snake.hy-- ;
+ } else {
+ }
} else {
+ if (joystick.direction == LEFT) {
+ snake.hx-- ;
+ pdirection = 0;
+ } else if (joystick.direction == UP) {
+ snake.hy++ ;
+ pdirection = 1;
+ } else if (joystick.direction == RIGHT) {
+ snake.hx++ ;
+ pdirection = 2;
+ } else if (joystick.direction == DOWN) {
+ snake.hy-- ;
+ pdirection = 3;
+ } else {
+ }
+
}
-
}
}
void game()
{
//brightnessTimer.attach(adjust_brightness,0.1);
- //gamemode = 0;
+ joystickTimer.detach();
+ gameTimer.detach();
+ gameTimer1.detach();
+ gameTimer2.detach();
+ joystick.direction = CENTRE;
+ // gamemode = 0;
gameOver = false;
snake.hx = width / 2; // initial position of snake head
snake.hy = height / 2;
@@ -195,203 +211,156 @@
score = 0;
pdirection = 1;
snake.length = 4; //length including head and tail
- for (int w = 0; w < snake.length ; w++) { //set initial snake position
+ for (int w = 0 ; w < snake.length ; w++) { //set initial snake position
snake.tailx[w] = (snake.hx - w) ;
snake.taily[w] = snake.hy;
+
}
//draw_screen();
- joystickTimer.attach(&joystick_pos, 0.1);
- gameTimer.attach(&snake_move, 0.2);
- gameTimer1.attach(&draw_screen, 0.1);
+
if (gamemode == 0) {
while (!gameOver) {
-
+ joystickTimer.attach(&joystick_pos, 0.1);
+ // gameTimer.attach(&snake_move,0.2);
+ gameTimer1.attach(&snake_logic_1,0.1);
+ gameTimer2.attach(&draw_screen, 0.1);
+ sleep();
+ }
+ if (gameOver == true) {
+ gameTimer1.detach();
+ gameTimer2.detach();
+}
+ }
+ }
+
+ void snake_logic_1() {
+//red_led = 0;
+ snake_move();
+ for (int d = (snake.length) ; d > 0 ; d--) { //move all snake body one position back
+ snake.tailx[d] = snake.tailx[d - 1];
+ snake.taily[d] = snake.taily[d - 1];
+
+ }
+ snake.tailx[0] = snake.hx;
+ snake.taily[0] = snake.hy;
+ // snake.hx = snake.tailx[0];
+ // snake.hy = snake.taily[0];
- for (int d = snake.length ; d > 0 ; d--) { //move all snake body one position back
- snake.tailx[d] = snake.tailx[d - 1];
- }
- snake.hx = snake.tailx[0];
- snake.hy = snake.taily[0];
- for (int pp = 1; pp < snake.length + 1; pp++) { //snake dies when come in contact with tail
- if (snake.tailx[0] == snake.tailx[pp] && snake.taily[0] == snake.taily[pp]) {
- gameOver = true;
- }
+ // snake_move();
+ // draw_screen();
+
+ for (int p = 1; p < snake.length + 1; p++) { //snake dies when come in contact with tail
+ if (snake.tailx[0] == snake.tailx[p] && snake.taily[0] == snake.taily[p]) {
+ gameOver = true;
+ red_led = 0;
+ }
+
+
+
+ }
- }
- if (snake.tailx[0] == fx && snake.taily[0] == fy) { // snake grows when in contact with food
- score++;
- food_pos();
- snake.length++;
- }
- //snake_move();
- }
-
+ if (snake.tailx[0] == 0 || snake.tailx[0] == width || snake.taily[0] == 1 || snake.taily[0] == height-1) {
+ gameOver = true;
+ }
+
+
+ if (snake.tailx[0] == fx && snake.taily[0] == fy) { // snake grows when in contact with food
+ score++;
+ food_pos();
+ snake.length++;
+ // draw_screen();
+ }
+ //snake_move();
}
- /*int prevx = snake.tailx[0];
- int prevy = snake.taily[0];
- int prev2x, prev2y;
- // snake.tailx[0] = snake.hx;
- // snake.taily[0] = snake.hy;
-
- for (int i = 1; i < snake.length ; i++) {
-
- prev2x = snake.tailx[i];
- prev2y = snake.taily[i];
- snake.tailx[i] = prevx;
- snake.taily[i] = prevy;
- prevx = prev2x;
- prevy = prev2y;
- draw_screen();
- */
-// for (int w = 1; w < snake.length; w++) {
-// if (snake.tailx[w] == snake.hx && snake.taily[w] == snake.hy) {
-// gameOver = 1;
-//}
-// }
-
-
-
-}
+ void food_pos() {
+ srand(time(NULL));
+ fx = rand() % (width - 3) + 2; // random x from 4 to width - 3 for x coordinate
+ fy = rand() % (height - 3) + 2; // random y from 4 to height - 3 for y coordinate
-/*} else {
- while (!gameOver) {
- int prevx = snake.tailx[0];
- int prevy = snake.taily[0];
- int prev2x, prev2y;
- snake.tailx[0] = snake.hx;
-
- snake.taily[0] = snake.hy;
-
+ }
- for (int i = 1; i < snake.length ; i++) {
-
- prev2x = snake.tailx[i];
- prev2y = snake.taily[i];
- snake.tailx[i] = prevx;
- snake.taily[i] = prevy;
- prevx = prev2x;
- prevy = prev2y;
- draw_screen();
-
- if (snake.hx == fx && snake.hy == fy) {
- score++;
- food_pos();
- snake.length++;
-
+ void main_menu() {
+ //brightnessTimer.attach(adjust_brightness,0.1);
+ joystickTimer.attach(joystick_pos,0.1);
+ int select = 0;
+ while (1) {
+ switch(select) {
+ case 0:
+ switch(joystick.direction) {
+ case UP:
+ select = 1;
+ break;
+ case DOWN:
+ select = 1;
+ break;
+ }
+ break;
+ case 1:
+ switch(joystick.direction) {
+ case UP:
+ select = 0;
+ break;
+ case DOWN:
+ select = 0;
+ break;
+ }
+ break;
+ }
+ wait(0.1);
+ if (select == 0) {
+ lcd.clear();
+ lcd.printString("Start Game",7,0);
+ lcd.printString("Settings",7,1);
+ lcd.drawCircle(3,3,2,1);
+ lcd.refresh();
+ } else if (select == 1) {
+ lcd.clear();
+ lcd.printString("Start Game", 7,0);
+ lcd.printString("Settings",7,1);
+ lcd.drawCircle(3,11,2,1);
+ lcd.refresh();
+ }
+ }
+ }
- }
- for (int w = 1; w < snake.length; w++) {
- if (snake.tailx[w] == snake.hx && snake.taily[w] == snake.hy) {
- gameOver = 1;
- }
- }
- }
- }
+ int main() {
+ init_display();
+ //brightnessTimer.attach(adjust_brightness,0.1);
+ joystickTimer.attach(joystick_pos,0.1);
+ calibrate_joystick();
+ gamemode = 0;
+ //lcd.printString("Hello, World!",0,0);
+ //main_menu();
+ red_led = 1;
+ game();
+ /*while(1) {
- // if (snake.hx == 0) {
- // gameOver = 1;
- //} else if (snake.hx == 83) {
- // gameOver = 1;
- //} else if (snake.hy == 0) {
- // gameOver = 1;
- //} else if (snake.hy == 47) {
- // gameOver = 1;
- //}
-
-*/
+ lcd.clear();
+ if (joystick.direction == UP) {
+ lcd.printString ("UP",1,0);
+ } else if (joystick.direction == CENTRE) {
+ lcd.printString ("CENTRE",1,0);
+ } else if (joystick.direction == DOWN) {
+ lcd.printString ("DOWN",1,0);
+ } else if (joystick.direction == LEFT) {
+ lcd.printString ("LEFT",1,0);
+ } else if (joystick.direction == RIGHT) {
+ lcd.printString ("RIGHT",1,0);
+ } else {
+ lcd.printString ("UNKNOWN",1,0);
+ }
+ lcd.refresh();
+ wait(1);
+ }
+ */
-void food_pos()
-{
- srand(time(NULL));
- fx = rand() % 83 + 1; // random x from 0 to width - 1 for x coordinate
- fy = rand() % 47 + 1; // random y from 0 to height - 1 for y coordinate
-
-}
-
-void main_menu()
-{
- //brightnessTimer.attach(adjust_brightness,0.1);
- joystickTimer.attach(joystick_pos,0.1);
- int select = 0;
- while (1) {
- switch(select) {
- case 0:
- switch(joystick.direction) {
- case UP:
- select = 1;
- break;
- case DOWN:
- select = 1;
- break;
- }
- break;
- case 1:
- switch(joystick.direction) {
- case UP:
- select = 0;
- break;
- case DOWN:
- select = 0;
- break;
- }
- break;
- }
- wait(0.1);
- if (select == 0) {
- lcd.clear();
- lcd.printString("Start Game",7,0);
- lcd.printString("Settings",7,1);
- lcd.drawCircle(3,3,2,1);
- lcd.refresh();
- } else if (select == 1) {
- lcd.clear();
- lcd.printString("Start Game", 7,0);
- lcd.printString("Settings",7,1);
- lcd.drawCircle(3,11,2,1);
- lcd.refresh();
- }
}
-}
-
-int main()
-{
- init_display();
- //brightnessTimer.attach(adjust_brightness,0.1);
- joystickTimer.attach(joystick_pos,0.1);
- calibrate_joystick();
- gamemode = 0;
- //lcd.printString("Hello, World!",0,0);
- //main_menu();
- game();
- /*while(1) {
-
- lcd.clear();
- if (joystick.direction == UP) {
- lcd.printString ("UP",1,0);
- } else if (joystick.direction == CENTRE) {
- lcd.printString ("CENTRE",1,0);
- } else if (joystick.direction == DOWN) {
- lcd.printString ("DOWN",1,0);
- } else if (joystick.direction == LEFT) {
- lcd.printString ("LEFT",1,0);
- } else if (joystick.direction == RIGHT) {
- lcd.printString ("RIGHT",1,0);
- } else {
- lcd.printString ("UNKNOWN",1,0);
- }
- lcd.refresh();
- wait(1);
- }
- */
-
-
-}