Diff: main.cpp

Revision:

0:5160597f3364

Child:

1:52a4c894086e

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon Jan 12 20:18:06 2015 +0000
@@ -0,0 +1,250 @@
+#include "mbed.h"
+#include "DisplayN18.h"
+#include "Timer.h"
+#include "USBSerial.h"
+
+//Display is 128x160
+#define SQUARE_SIZE 3
+#define COLUMNS 40
+#define ROWS 32
+
+USBSerial serial;
+
+DigitalIn left(P0_14, PullUp);
+DigitalIn right(P0_11, PullUp);
+DigitalIn down(P0_12, PullUp);
+DigitalIn up(P0_13, PullUp);
+DigitalIn square(P0_16, PullUp);
+DigitalIn circle(P0_1, PullUp);
+         
+DisplayN18 disp;
+
+char width = 160;
+char height = 128;
+
+short snake_body[256];
+short snake_length = 3;
+
+char LEFT = 0;
+char RIGHT = 1;
+char UP = 2;
+char DOWN = 3;
+
+char snake_direction = LEFT; 
+
+char bonus_x, bonus_y;
+
+unsigned long loopStartTime = 0;
+ 
+void checkButtons()
+{
+    int buttonState = left.read();
+    
+    if( buttonState == 0 )
+    {
+        snake_direction = LEFT;
+        
+        return;
+    }
+    
+    buttonState = right.read();
+    
+
+    if( buttonState == 0 )
+    {
+        snake_direction = RIGHT;
+        
+        return;
+    }    
+    
+    buttonState = up.read();
+    
+
+    if( buttonState == 0 )
+    {
+        snake_direction = UP;
+        
+        return;
+    }
+    
+    buttonState = down.read();
+    
+
+    if( buttonState == 0 )
+    {
+        snake_direction = DOWN;
+
+        
+        return;
+    }
+    
+    buttonState = square.read();
+    
+    if( buttonState == 0 )
+    {
+
+    }
+    
+}
+
+bool move_snake()
+{
+    //"Erase" tale here
+    disp.fillRect( (snake_body[snake_length - 1] >> 8) * (SQUARE_SIZE + 1) , (snake_body[snake_length - 1] & 0x00FF)* (SQUARE_SIZE + 1) , SQUARE_SIZE, SQUARE_SIZE, DisplayN18::rgbToShort(0, 0, 0)); 
+
+    for (int i = snake_length - 1; i > 0; i--)
+       snake_body[i] = snake_body[i-1];
+
+    int headX = snake_body[0]>>8;
+    int headY = snake_body[0]&0x00FF;
+
+    switch (snake_direction)
+    {
+    case 0:
+       headX -= 1;
+       break;
+    case 1:
+       headX += 1;
+       break;
+    case 2:
+       headY -= 1;
+       break;
+    case 3:
+       headY += 1;
+       break;
+    }
+
+    if (headX < 0)
+       headX = COLUMNS-1;
+
+    if (headX >= COLUMNS )
+       headX = 0;
+
+    if (headY < 0)
+       headY = ROWS-1;
+
+    if (headY >= ROWS)
+       headY = 0;
+
+    snake_body[0] = headX<<8|headY; 
+
+    for (int i = 1; i < snake_length - 1; i++)
+    {
+       if (headX == (snake_body[i]>>8) && headY == (snake_body[i] & 0x00FF))
+          return true;
+    }
+
+    return false;  
+}
+
+void new_bonus()
+{
+    bonus_x = rand()%COLUMNS;
+    bonus_y = rand()%ROWS;
+}
+
+void draw_snake()
+{
+    char x, y;
+    for( int i = 0; i< snake_length; i++ )
+    {
+       x= (snake_body[i] >> 8) * (SQUARE_SIZE + 1);
+       y= (snake_body[i] & 0x00FF)* (SQUARE_SIZE + 1);
+       disp.fillRect( x , y , SQUARE_SIZE, SQUARE_SIZE, DisplayN18::Yellow); 
+    }
+}
+
+void draw_bonus()
+{
+    disp.fillRect( bonus_x*(SQUARE_SIZE+1) , bonus_y*(SQUARE_SIZE+1) , SQUARE_SIZE, SQUARE_SIZE, DisplayN18::rgbToShort(0, 0, 255));   
+}
+
+void render()
+{
+    draw_snake();
+    draw_bonus();
+}
+
+void reset_game()
+{
+    char startX = 15;
+    char startY = 20;
+
+    snake_body[0] = startX << 8 | startY;
+    snake_body[1] = (startX) << 8 | (startY+1);
+    snake_body[2] = (startX) << 8 | (startY+2);
+    snake_length = 3;
+
+    new_bonus();
+
+    loopStartTime = 0;
+
+    snake_direction = LEFT;
+
+    render();
+}
+
+
+
+void clear_field()
+{
+    char x, y;
+    for( int i = 0; i< snake_length; i++ )
+    {
+       x= (snake_body[i] >> 8) * (SQUARE_SIZE + 1);
+       y= (snake_body[i] & 0x00FF)* (SQUARE_SIZE + 1);
+       disp.fillRect( x , y , SQUARE_SIZE, SQUARE_SIZE, DisplayN18::rgbToShort(0, 0, 0)); 
+    }
+
+    disp.fillRect( bonus_x*(SQUARE_SIZE+1) , bonus_y*(SQUARE_SIZE+1) , SQUARE_SIZE, SQUARE_SIZE, DisplayN18::rgbToShort(0, 0, 0));     
+}
+
+
+main()
+{
+
+
+    AnalogIn ain(P0_15); 
+    
+    disp.clear();
+    
+    DigitalOut led1(LED1, false);
+    
+    srand(ain.read_u16());
+        
+
+    Timer timer;
+
+    timer.start();
+    
+    int loopStartTime = timer.read_ms();
+    while (true) 
+    {   
+        checkButtons();
+        if( timer.read_ms() - loopStartTime > 200 )
+        {
+            if( move_snake() )
+            {
+                clear_field();
+                reset_game();
+                //return;
+            }
+            
+            int headX = snake_body[0]>>8;
+       int headY = snake_body[0]&0x00FF;
+
+       if (headX == bonus_x && headY == bonus_y)
+       {
+          snake_body[snake_length++] = snake_body[snake_length-1];
+          snake_body[snake_length++] = snake_body[snake_length-1];
+
+          new_bonus();
+       }
+        render();
+        
+            loopStartTime = timer.read_ms();
+        }
+    }    
+}
+
+