Revision 1:06958b7bbf65, committed 2016-05-05

Comitter:

wuchyi

Date:

Thu May 05 15:03:15 2016 +0000

Parent:

0:1719e11ef162

Child:

2:537b8388dc6a

Commit message:

working logic

Changed in this revision

--- 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);
-    }
-    */
-
-
-}