Revision 0:1305fa20a8db, committed 2017-11-08

Comitter:

jchin32

Date:

Wed Nov 08 20:25:03 2017 +0000

Commit message:

World In Balance Game

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/4DGL-uLCD-SE.lib	Wed Nov 08 20:25:03 2017 +0000
@@ -0,0 +1,1 @@
+https://os.mbed.com/users/jchin32/code/4DGL-uLCD-SE/#df8988c8d7d1

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/AbstractAsteroid.cpp	Wed Nov 08 20:25:03 2017 +0000
@@ -0,0 +1,62 @@
+#include "AbstractAsteroid.h"
+
+int asteroidErase[ASTEROID_WIDTH * ASTEROID_HEIGHT] = {
+ _,_,_,_,_,_,_,_,_,_,_,_,_,_,_,
+ _,_,_,_,_,_,_,_,_,_,_,_,_,_,_,
+ _,_,_,_,_,_,_,_,_,_,_,_,_,_,_,
+ _,_,_,_,_,_,_,_,_,_,_,_,_,_,_,
+ _,_,_,_,_,_,_,_,_,_,_,_,_,_,_,
+ _,_,_,_,_,_,_,_,_,_,_,_,_,_,_,
+ _,_,_,_,_,_,_,_,_,_,_,_,_,_,_,
+ _,_,_,_,_,_,_,_,_,_,_,_,_,_,_,
+ _,_,_,_,_,_,_,_,_,_,_,_,_,_,_,
+ _,_,_,_,_,_,_,_,_,_,_,_,_,_,_,
+ _,_,_,_,_,_,_,_,_,_,_,_,_,_,_,
+ _,_,_,_,_,_,_,_,_,_,_,_,_,_,_
+};
+
+int AbstractAsteroid::getXPath() const {
+    return xPath;
+}
+
+int AbstractAsteroid::getYPath() const {
+    return yPath;
+}
+
+int AbstractAsteroid::getSpeed() const {
+    return speed;
+}
+
+void AbstractAsteroid::setXPath(int xPath) {
+    this->xPath = xPath;
+}
+
+void AbstractAsteroid::setYPath(int yPath) {
+    this->yPath = yPath;
+}
+
+void AbstractAsteroid::setSpeed(int speed) {
+    this->speed = speed;
+}
+
+
+void AbstractAsteroid::draw() {
+    uLCD.BLIT(getX() - (ASTEROID_WIDTH / 2), getY() - (ASTEROID_HEIGHT / 2),
+        ASTEROID_WIDTH, ASTEROID_HEIGHT, getSprite());
+}
+
+void AbstractAsteroid::update() {
+    uLCD.BLIT(getX() - (ASTEROID_WIDTH / 2), getY() - (ASTEROID_HEIGHT / 2),
+        ASTEROID_WIDTH, ASTEROID_HEIGHT, asteroidErase);
+    setX(getSpeed() * (getX() + getXPath()));
+    setY(getSpeed() * (getY() + getYPath()));
+    int leftBound = getX() - (ASTEROID_WIDTH / 2);
+    int topBound = getY() - (ASTEROID_HEIGHT / 2);
+    int rightBound = getX() + (ASTEROID_WIDTH / 2);
+    int bottomBound = getY() + (ASTEROID_WIDTH / 2);
+    if (leftBound < 1 + (getWidth() / 2) || topBound < 1 + (getHeight()  / 2)
+        || rightBound > 127 - (getWidth() / 2)
+        || bottomBound > 127 - (getHeight() / 2)) {
+        setDestroyed(true);
+    } 
+}
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/AbstractAsteroid.h	Wed Nov 08 20:25:03 2017 +0000
@@ -0,0 +1,23 @@
+#ifndef __ABSTRACTASTEROID_H__
+#define __ABSTRACTASTEROID_H__
+
+#include "ScreenObject.h"
+
+class AbstractAsteroid : public ScreenObject {
+    public:
+    int getXPath() const;
+    int getYPath() const;
+    int getSpeed() const;
+    void setXPath(int);
+    void setYPath(int);
+    void setSpeed(int);
+    virtual void draw();
+    virtual void update();
+    
+    private:
+    int xPath;
+    int yPath;
+    int speed;       
+};
+
+#endif
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Asteroid1.h	Wed Nov 08 20:25:03 2017 +0000
@@ -0,0 +1,7 @@
+#include "AbstractAsteroid.h"
+
+class Asteroid1 : public AbstractAsteroid {
+    public:
+    Asteroid1();
+};
+    
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Asteroid2.h	Wed Nov 08 20:25:03 2017 +0000
@@ -0,0 +1,7 @@
+#include "AbstractAsteroid.h"
+
+class Asteroid2 : public AbstractAsteroid {
+    public:
+    Asteroid2();
+};
+    
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Asteroid3.h	Wed Nov 08 20:25:03 2017 +0000
@@ -0,0 +1,6 @@
+#include "AbstractAsteroid.h"
+
+class Asteroid3 : public AbstractAsteroid {
+    public:
+    Asteroid3();
+};
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Asteroid4.h	Wed Nov 08 20:25:03 2017 +0000
@@ -0,0 +1,6 @@
+#include "AbstractAsteroid.h"
+
+class Asteroid4 : public AbstractAsteroid {
+    public:
+    Asteroid4();
+};
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MMA8452.cpp	Wed Nov 08 20:25:03 2017 +0000
@@ -0,0 +1,538 @@
+// Authors: Ashley Mills, Nicholas Herriot
+/* Copyright (c) 2013 Vodafone, MIT License
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+ * and associated documentation files (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge, publish, distribute,
+ * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or
+ * substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+ * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+ 
+#include "MMA8452.h"
+#include "mbed.h"
+ 
+#ifdef MMA8452_DEBUG
+// you need to define Serial pc(USBTX,USBRX) somewhere for the below line to make sense
+extern Serial pc;
+#define MMA8452_DBG(...) pc.printf(__VA_ARGS__); pc.printf("\r\n");
+#else
+#define MMA8452_DBG(...)
+#endif
+ 
+// Connect module at I2C address using I2C port pins sda and scl
+MMA8452::MMA8452(PinName sda, PinName scl, int frequency) : _i2c(sda, scl) , _frequency(frequency) {
+   MMA8452_DBG("Creating MMA8452");
+   
+   // set I2C frequency
+   _i2c.frequency(_frequency);
+   
+   // setup read and write addresses for convenience
+   _readAddress   = MMA8452_ADDRESS | 0x01;
+   _writeAddress  = MMA8452_ADDRESS & 0xFE;
+   
+   // set some defaults
+   _bitDepth = BIT_DEPTH_UNKNOWN;
+   setBitDepth(BIT_DEPTH_12);
+   _dynamicRange = DYNAMIC_RANGE_UNKNOWN;
+   setDynamicRange(DYNAMIC_RANGE_2G);
+   
+   MMA8452_DBG("Done");
+}
+ 
+ 
+// Destroys instance
+MMA8452::~MMA8452() {}
+ 
+// Setting the control register bit 1 to true to activate the MMA8452
+int MMA8452::activate() {
+    // perform write and return error code
+    return logicalORRegister(MMA8452_CTRL_REG_1,MMA8452_ACTIVE_MASK);
+}
+ 
+// Setting the control register bit 1 to 0 to standby the MMA8452
+int MMA8452::standby() {
+    // perform write and return error code
+    return logicalANDRegister(MMA8452_CTRL_REG_1,MMA8452_STANDBY_MASK);
+}
+ 
+// this reads a register, applies a bitmask with logical AND, sets a value with logical OR,
+// and optionally goes into and out of standby at the beginning and end of the function respectively
+int MMA8452::maskAndApplyRegister(char reg, char mask, char value, int toggleActivation) {
+   if(toggleActivation) {
+       if(standby()) {
+          return 1;
+       }
+   }
+   
+   // read from register
+   char oldValue = 0;
+   if(readRegister(reg,&oldValue)) {
+      return 1;
+   }
+   
+   // apply bitmask
+   oldValue &= mask;
+   
+   // set value
+   oldValue |= value;
+   
+   // write back to register
+   if(writeRegister(reg,oldValue)) {
+      return 1;
+   }
+   
+   if(toggleActivation) {
+       if(activate()) {
+          return 1;
+       }
+   }
+   return 0;
+}
+ 
+int MMA8452::setDynamicRange(DynamicRange range, int toggleActivation) {
+   _dynamicRange = range;
+   return maskAndApplyRegister(
+      MMA8452_XYZ_DATA_CFG,
+      MMA8452_DYNAMIC_RANGE_MASK,
+      range,
+      toggleActivation
+   );
+}
+ 
+int MMA8452::setDataRate(DataRateHz dataRate, int toggleActivation) {
+   return maskAndApplyRegister(
+       MMA8452_CTRL_REG_1,
+       MMA8452_DATA_RATE_MASK,
+       dataRate<<MMA8452_DATA_RATE_MASK_SHIFT,
+       toggleActivation
+   );
+}
+ 
+int MMA8452::setBitDepth(BitDepth depth,int toggleActivation) {
+   _bitDepth = depth;
+   return maskAndApplyRegister(
+      MMA8452_CTRL_REG_1,
+      MMA8452_BIT_DEPTH_MASK,
+      depth<<MMA8452_BIT_DEPTH_MASK_SHIFT,
+      toggleActivation
+   );
+}
+ 
+char MMA8452::getMaskedRegister(int addr, char mask) {
+   char rval = 0;
+   if(readRegister(addr,&rval)) {
+      return 0;
+   }
+   return (rval&mask);
+}
+ 
+int MMA8452::isXYZReady() {
+   return getMaskedRegister(MMA8452_STATUS,MMA8452_STATUS_ZYXDR_MASK)>0;
+}
+ 
+int MMA8452::isXReady() {
+   return getMaskedRegister(MMA8452_STATUS,MMA8452_STATUS_XDR_MASK)>0;
+}
+ 
+int MMA8452::isYReady() {
+   return getMaskedRegister(MMA8452_STATUS,MMA8452_STATUS_YDR_MASK)>0;
+}
+ 
+int MMA8452::isZReady() {
+   return getMaskedRegister(MMA8452_STATUS,MMA8452_STATUS_ZDR_MASK)>0;
+}
+ 
+ 
+int MMA8452::getDeviceID(char *dst) {
+   return readRegister(MMA8452_WHO_AM_I,dst);
+}
+ 
+int MMA8452::getStatus(char* dst) {
+   return readRegister(MMA8452_STATUS,dst);
+}
+ 
+MMA8452::DynamicRange MMA8452::getDynamicRange() {
+   char rval = 0;
+   if(readRegister(MMA8452_XYZ_DATA_CFG,&rval)) {
+      return MMA8452::DYNAMIC_RANGE_UNKNOWN;
+   }
+   rval &= (MMA8452_DYNAMIC_RANGE_MASK^0xFF);
+   return (MMA8452::DynamicRange)rval;
+}
+ 
+MMA8452::DataRateHz MMA8452::getDataRate() {
+   char rval = 0;
+   if(readRegister(MMA8452_CTRL_REG_1,&rval)) {
+      return MMA8452::RATE_UNKNOWN;
+   }
+   // logical AND with inverse of mask
+   rval = rval&(MMA8452_DATA_RATE_MASK^0xFF);
+   // shift back into position
+   rval >>= MMA8452_DATA_RATE_MASK_SHIFT;
+   return (MMA8452::DataRateHz)rval;
+}
+ 
+// Reads xyz
+int MMA8452::readXYZRaw(char *dst) {
+   if(_bitDepth==BIT_DEPTH_UNKNOWN) {
+      return 1;
+   }
+   int readLen = 3;
+   if(_bitDepth==BIT_DEPTH_12) {
+      readLen = 6;
+   }
+   return readRegister(MMA8452_OUT_X_MSB,dst,readLen);
+}
+ 
+int MMA8452::readXRaw(char *dst) {
+   if(_bitDepth==BIT_DEPTH_UNKNOWN) {
+      return 1;
+   }
+   int readLen = 1;
+   if(_bitDepth==BIT_DEPTH_12) {
+      readLen = 2;
+   }
+   return readRegister(MMA8452_OUT_X_MSB,dst,readLen);
+}
+ 
+int MMA8452::readYRaw(char *dst) {
+   if(_bitDepth==BIT_DEPTH_UNKNOWN) {
+      return 1;
+   }
+   int readLen = 1;
+   if(_bitDepth==BIT_DEPTH_12) {
+      readLen = 2;
+   }
+   return readRegister(MMA8452_OUT_Y_MSB,dst,readLen);
+}
+ 
+int MMA8452::readZRaw(char *dst) {
+   if(_bitDepth==BIT_DEPTH_UNKNOWN) {
+      return 1;
+   }
+   int readLen = 1;
+   if(_bitDepth==BIT_DEPTH_12) {
+      readLen = 2;
+   }
+   return readRegister(MMA8452_OUT_Z_MSB,dst,readLen);
+}
+ 
+int MMA8452::readXYZCounts(int *x, int *y, int *z) {
+   char buf[6];
+   if(readXYZRaw((char*)&buf)) {
+       return 1;
+   }
+   if(_bitDepth==BIT_DEPTH_12) {
+     *x = twelveBitToSigned(&buf[0]);
+     *y = twelveBitToSigned(&buf[2]);
+     *z = twelveBitToSigned(&buf[4]);
+   } else {
+     *x = eightBitToSigned(&buf[0]);
+     *y = eightBitToSigned(&buf[1]);
+     *z = eightBitToSigned(&buf[2]);
+   }
+   
+   return 0;
+}
+ 
+int MMA8452::readXCount(int *x) {
+   char buf[2];
+   if(readXRaw((char*)&buf)) {
+       return 1;
+   }
+   if(_bitDepth==BIT_DEPTH_12) {
+     *x = twelveBitToSigned(&buf[0]);
+   } else {
+     *x = eightBitToSigned(&buf[0]);
+   }
+   return 0;
+}
+ 
+int MMA8452::readYCount(int *y) {
+   char buf[2];
+   if(readYRaw((char*)&buf)) {
+       return 1;
+   }
+   if(_bitDepth==BIT_DEPTH_12) {
+     *y = twelveBitToSigned(&buf[0]);
+   } else {
+     *y = eightBitToSigned(&buf[0]);
+   }
+   return 0;
+}
+ 
+int MMA8452::readZCount(int *z) {
+   char buf[2];
+   if(readZRaw((char*)&buf)) {
+       return 1;
+   }
+   if(_bitDepth==BIT_DEPTH_12) {
+     *z = twelveBitToSigned(&buf[0]);
+   } else {
+     *z = eightBitToSigned(&buf[0]);
+   }
+   return 0;
+}
+ 
+double MMA8452::convertCountToGravity(int count, int countsPerG) {
+   return (double)count/(double)countsPerG;
+}
+ 
+int MMA8452::getCountsPerG() {
+ // assume starting with DYNAMIC_RANGE_2G and BIT_DEPTH_12
+   int countsPerG = 1024;
+   if(_bitDepth==BIT_DEPTH_8) {
+      countsPerG = 64;
+   }
+   switch(_dynamicRange) {
+      case DYNAMIC_RANGE_4G:
+         countsPerG /= 2;
+      break;
+      case DYNAMIC_RANGE_8G:
+         countsPerG /= 4;
+      break;
+   }
+   return countsPerG;
+}
+ 
+int MMA8452::readXYZGravity(double *x, double *y, double *z) {
+   int xCount = 0, yCount = 0, zCount = 0;
+   if(readXYZCounts(&xCount,&yCount,&zCount)) {
+      return 1;
+   }
+   int countsPerG = getCountsPerG();
+   
+   *x = convertCountToGravity(xCount,countsPerG);
+   *y = convertCountToGravity(yCount,countsPerG);
+   *z = convertCountToGravity(zCount,countsPerG);
+   return 0;
+}
+ 
+int MMA8452::readXGravity(double *x) {
+   int xCount = 0;
+   if(readXCount(&xCount)) {
+      return 1;
+   }
+   int countsPerG = getCountsPerG();
+   
+   *x = convertCountToGravity(xCount,countsPerG);
+   return 0;
+}
+ 
+int MMA8452::readYGravity(double *y) {
+   int yCount = 0;
+   if(readYCount(&yCount)) {
+      return 1;
+   }
+   int countsPerG = getCountsPerG();
+   
+   *y = convertCountToGravity(yCount,countsPerG);
+   return 0;
+}
+ 
+int MMA8452::readZGravity(double *z) {
+   int zCount = 0;
+   if(readZCount(&zCount)) {
+      return 1;
+   }
+   int countsPerG = getCountsPerG();
+   
+   *z = convertCountToGravity(zCount,countsPerG);
+   return 0;
+}
+ 
+// apply an AND mask to a register. read register value, apply mask, write it back
+int MMA8452::logicalANDRegister(char addr, char mask) {
+   char value = 0;
+   // read register value
+   if(readRegister(addr,&value)) {
+      return 0;
+   }
+   // apply mask
+   value &= mask;
+   return writeRegister(addr,value);
+}
+ 
+ 
+// apply an OR mask to a register. read register value, apply mask, write it back
+int MMA8452::logicalORRegister(char addr, char mask) {
+   char value = 0;
+   // read register value
+   if(readRegister(addr,&value)) {
+      return 0;
+   }
+   // apply mask
+   value |= mask;
+   return writeRegister(addr,value);
+}
+ 
+// apply an OR mask to a register. read register value, apply mask, write it back
+int MMA8452::logicalXORRegister(char addr, char mask) {
+   char value = 0;
+   // read register value
+   if(readRegister(addr,&value)) {
+      return 0;
+   }
+   // apply mask
+   value ^= mask;
+   return writeRegister(addr,value);
+}
+ 
+// Write register (The device must be placed in Standby Mode to change the value of the registers) 
+int MMA8452::writeRegister(char addr, char data) {
+    // what this actually does is the following
+    // 1. tell I2C bus to start transaction
+    // 2. tell slave we want to write (slave address & write flag)
+    // 3. send the write address
+    // 4. send the data to write
+    // 5. tell I2C bus to end transaction
+ 
+    // we can wrap this up in the I2C library write function
+    char buf[2] = {0,0};
+    buf[0] = addr;
+    buf[1] = data;
+    return _i2c.write(MMA8452_ADDRESS, buf,2);
+    // note, could also do return writeRegister(addr,&data,1);
+}
+ 
+int MMA8452::eightBitToSigned(char *buf) {
+   return (int8_t)*buf;
+}
+ 
+int MMA8452::twelveBitToSigned(char *buf) {
+   // cheat by using the int16_t internal type
+   // all we need to do is convert to little-endian format and shift right
+   int16_t x = 0;
+   ((char*)&x)[1] = buf[0];
+   ((char*)&x)[0] = buf[1];
+   // note this only works because the below is an arithmetic right shift
+   return x>>4; 
+}
+ 
+int MMA8452::writeRegister(char addr, char *data, int nbytes) {
+    // writing multiple bytes is a little bit annoying because
+    // the I2C library doesn't support sending the address separately
+    // so we just do it manually
+    
+    // 1. tell I2C bus to start transaction
+    _i2c.start();
+    // 2. tell slave we want to write (slave address & write flag)
+    if(_i2c.write(_writeAddress)!=1) {
+       return 1;
+    }
+    // 3. send the write address
+    if(_i2c.write(addr)!=1) {
+       return 1;
+    }
+    // 4. send the data to write
+    for(int i=0; i<nbytes; i++) {
+       if(_i2c.write(data[i])!=1) {
+          return 1;
+       }
+    }
+    // 5. tell I2C bus to end transaction
+    _i2c.stop();
+    return 0;
+}
+ 
+int MMA8452::readRegister(char addr, char *dst, int nbytes) {
+    // this is a bit odd, but basically proceeds like this
+    // 1. Send a start command
+    // 2. Tell the slave we want to write (slave address & write flag)
+    // 3. Send the address of the register (addr)
+    // 4. Send another start command to delineate read portion
+    // 5. Tell the slave we want to read (slave address & read flag)
+    // 6. Read the register value bytes
+    // 7. Send a stop command
+    
+    // we can wrap this process in the I2C library read and write commands
+    if(_i2c.write(MMA8452_ADDRESS,&addr,1,true)) {
+       return 1;
+    }
+    return _i2c.read(MMA8452_ADDRESS,dst,nbytes);
+}
+ 
+// most registers are 1 byte, so here is a convenience function
+int MMA8452::readRegister(char addr, char *dst) {
+    return readRegister(addr,dst,1);
+}
+ 
+MMA8452::BitDepth MMA8452::getBitDepth() {
+   return _bitDepth;
+}
+ 
+#ifdef MMA8452_DEBUG
+void MMA8452::debugRegister(char reg) {
+   // get register value
+   char v = 0;
+   if(readRegister(reg,&v)) {
+      MMA8452_DBG("Error reading specified register");
+      return;
+   }
+   // print out details
+   switch(reg) {
+      case MMA8452_CTRL_REG_1:
+         MMA8452_DBG("CTRL_REG_1 has value: 0x%x",v);
+         MMA8452_DBG(" 7  ALSP_RATE_1: %d",(v&0x80)>>7);
+         MMA8452_DBG(" 6  ALSP_RATE_0: %d",(v&0x40)>>6);
+         MMA8452_DBG(" 5  DR2: %d",        (v&0x20)>>5);
+         MMA8452_DBG(" 4  DR1: %d",        (v&0x10)>>4);
+         MMA8452_DBG(" 3  DR0: %d",        (v&0x08)>>3);
+         MMA8452_DBG(" 2  LNOISE: %d",     (v&0x04)>>2);
+         MMA8452_DBG(" 1  FREAD: %d",      (v&0x02)>>1);
+         MMA8452_DBG(" 0  ACTIVE: %d",     (v&0x01));
+      break;
+        
+      case MMA8452_XYZ_DATA_CFG:
+         MMA8452_DBG("XYZ_DATA_CFG has value: 0x%x",v);
+         MMA8452_DBG(" 7  Unused: %d", (v&0x80)>>7);
+         MMA8452_DBG(" 6  0: %d",      (v&0x40)>>6);
+         MMA8452_DBG(" 5  0: %d",      (v&0x20)>>5);
+         MMA8452_DBG(" 4  HPF_Out: %d",(v&0x10)>>4);
+         MMA8452_DBG(" 3  0: %d",      (v&0x08)>>3);
+         MMA8452_DBG(" 2  0: %d",      (v&0x04)>>2);
+         MMA8452_DBG(" 1  FS1: %d",    (v&0x02)>>1);
+         MMA8452_DBG(" 0  FS0: %d",    (v&0x01));
+         switch(v&0x03) {
+            case 0:
+               MMA8452_DBG("Dynamic range: 2G");
+            break;
+            case 1:
+               MMA8452_DBG("Dynamic range: 4G");
+            break;
+            case 2:
+               MMA8452_DBG("Dynamic range: 8G");
+            break;
+            default:
+               MMA8452_DBG("Unknown dynamic range");
+            break;
+         }
+      break;
+      
+      case MMA8452_STATUS:
+         MMA8452_DBG("STATUS has value: 0x%x",v);
+         MMA8452_DBG(" 7  ZYXOW: %d",(v&0x80)>>7);
+         MMA8452_DBG(" 6  ZOW: %d",  (v&0x40)>>6);
+         MMA8452_DBG(" 5  YOW: %d",  (v&0x20)>>5);
+         MMA8452_DBG(" 4  XOW: %d",  (v&0x10)>>4);
+         MMA8452_DBG(" 3  ZYXDR: %d",(v&0x08)>>3);
+         MMA8452_DBG(" 2  ZDR: %d",  (v&0x04)>>2);
+         MMA8452_DBG(" 1  YDR: %d",  (v&0x02)>>1);
+         MMA8452_DBG(" 0  XDR: %d",  (v&0x01));
+      break;
+      
+      default:
+         MMA8452_DBG("Unknown register address: 0x%x",reg);
+      break;
+   }
+}
+#endif
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MMA8452.h	Wed Nov 08 20:25:03 2017 +0000
@@ -0,0 +1,344 @@
+#pragma once
+ 
+// Authors: Ashley Mills, Nicholas Herriot
+/* Copyright (c) 2013 Vodafone, MIT License
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+ * and associated documentation files (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge, publish, distribute,
+ * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or
+ * substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+ * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+ 
+// the SparkFun breakout board defaults to 1, set to 0 if SA0 jumper on the bottom of the board is set
+// see the Table 10. I2C Device Address Sequence in Freescale MMA8452Q pdf
+ 
+#include "mbed.h" 
+ 
+#define MMA8452_DEBUG 1
+ 
+// More info on MCU Master address can be found on section 5.10.1 of http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=MMA8452Q
+#define SA0 1
+#if SA0
+  #define MMA8452_ADDRESS 0x3A // 0x1D<<1  // SA0 is high, 0x1C if low - 
+#else
+  #define MMA8452_ADDRESS 0x38 // 0x1C<<1
+#endif
+ 
+// Register descriptions found in section 6 of pdf
+#define MMA8452_STATUS 0x00        // Type 'read' : Status of the data registers
+#define MMA8452_OUT_X_MSB 0x01     // Type 'read' : x axis - MSB of 2 byte sample
+#define MMA8452_OUT_X_LSB 0x02     // Type 'read' : x axis - LSB of 2 byte sample
+#define MMA8452_OUT_Y_MSB 0x03     // Type 'read' : y axis - MSB of 2 byte sample
+#define MMA8452_OUT_Y_LSB 0x04     // Type 'read' : y axis - LSB of 2 byte sample
+#define MMA8452_OUT_Z_MSB 0x05     // Type 'read' : z axis - MSB of 2 byte sample
+#define MMA8452_OUT_Z_LSB 0x06     // Type 'read' : z axis - LSB of 2 byte sample
+ 
+// register definitions
+#define MMA8452_XYZ_DATA_CFG 0x0E
+ 
+#define MMA8452_SYSMOD 0x0B        // Type 'read' : This tells you if device is active, sleep or standy 0x00=STANDBY 0x01=WAKE 0x02=SLEEP
+#define MMA8452_WHO_AM_I 0x0D      // Type 'read' : This should return the device id of 0x2A
+ 
+#define MMA8452_PL_STATUS 0x10     // Type 'read' : This shows portrait landscape mode orientation
+#define MMA8452_PL_CFG 0x11        // Type 'read/write' : This allows portrait landscape configuration
+#define MMA8452_PL_COUNT 0x12      // Type 'read' : This is the portraint landscape debounce counter
+#define MMA8452_PL_BF_ZCOMP 0x13   // Type 'read' :
+#define MMA8452_PL_THS_REG 0x14    // Type 'read' :
+ 
+#define MMA8452_FF_MT_CFG 0X15     // Type 'read/write' : Freefaul motion functional block configuration
+#define MMA8452_FF_MT_SRC 0X16     // Type 'read' : Freefaul motion event source register
+#define MMA8452_FF_MT_THS 0X17     // Type 'read' : Freefaul motion threshold register
+#define MMA8452_FF_COUNT 0X18      // Type 'read' : Freefaul motion debouce counter
+ 
+#define MMA8452_ASLP_COUNT 0x29    // Type 'read/write' : Counter settings for auto sleep
+#define MMA8452_CTRL_REG_1 0x2A    // Type 'read/write' :
+#define MMA8452_CTRL_REG_2 0x2B    // Type 'read/write' :
+#define MMA8452_CTRL_REG_3 0x2C    // Type 'read/write' :
+#define MMA8452_CTRL_REG_4 0x2D    // Type 'read/write' :
+#define MMA8452_CTRL_REG_5 0x2E    // Type 'read/write' :
+ 
+// Defined in table 13 of the Freescale PDF
+/// xxx these all need to have better names
+#define STANDBY 0x00                        // State value returned after a SYSMOD request, it can be in state STANDBY, WAKE or SLEEP
+#define WAKE 0x01                           // State value returned after a SYSMOD request, it can be in state STANDBY, WAKE or SLEEP
+#define SLEEP 0x02                          // State value returned after a SYSMOD request, it can be in state STANDBY, WAKE or SLEEP
+#define ACTIVE 0x01                         // Stage value returned and set in Control Register 1, it can be STANDBY=00, or ACTIVE=01
+ 
+#define TILT_STATUS 0x03        // Tilt Status (Read only)
+#define SRST_STATUS 0x04        // Sample Rate Status Register (Read only)
+#define SPCNT_STATUS 0x05       // Sleep Count Register (Read/Write)
+#define INTSU_STATUS 0x06       // Interrupt Setup Register
+#define MODE_STATUS 0x07        // Mode Register (Read/Write)
+#define SR_STATUS 0x08          // Auto-Wake and Active Mode Portrait/Landscape Samples per Seconds Register (Read/Write)
+#define PDET_STATUS 0x09        // Tap/Pulse Detection Register (Read/Write)
+#define PD_STATUS 0xA           // Tap/Pulse Debounce Count Register (Read/Write)
+ 
+// masks for enabling/disabling standby
+#define MMA8452_ACTIVE_MASK 0x01
+#define MMA8452_STANDBY_MASK 0xFE
+ 
+// mask for dynamic range reading and writing
+#define MMA8452_DYNAMIC_RANGE_MASK 0xFC
+ 
+// mask and shift for data rate reading and writing
+#define MMA8452_DATA_RATE_MASK 0xC7
+#define MMA8452_DATA_RATE_MASK_SHIFT 0x03
+ 
+// mask and shift for general reading and writing
+#define MMA8452_WRITE_MASK 0xFE
+#define MMA8452_READ_MASK 0x01
+ 
+// mask and shift for bit depth reading and writing
+#define MMA8452_BIT_DEPTH_MASK 0xFD
+#define MMA8452_BIT_DEPTH_MASK_SHIFT 0x01
+ 
+// status masks and shifts
+#define MMA8452_STATUS_ZYXDR_MASK 0x08
+#define MMA8452_STATUS_ZDR_MASK 0x04
+#define MMA8452_STATUS_YDR_MASK 0x02
+#define MMA8452_STATUS_XDR_MASK 0x01
+ 
+/**
+ * Wrapper for the MMA8452 I2C driven accelerometer.
+ */
+class MMA8452 {
+            
+    public:
+    
+       enum DynamicRange {
+           DYNAMIC_RANGE_2G=0x00,
+           DYNAMIC_RANGE_4G,
+           DYNAMIC_RANGE_8G,
+           DYNAMIC_RANGE_UNKNOWN
+       };
+        
+       enum BitDepth {
+           BIT_DEPTH_12=0x00,
+           BIT_DEPTH_8, // 1 sets fast read mode, hence the inversion
+           BIT_DEPTH_UNKNOWN
+       };
+       
+       enum DataRateHz {
+          RATE_800=0x00,
+          RATE_400,
+          RATE_200,
+          RATE_100,
+          RATE_50,
+          RATE_12_5,
+          RATE_6_25,
+          RATE_1_563,
+          RATE_UNKNOWN
+       };
+         
+       /**
+        * Create an accelerometer object connected to the specified I2C pins.
+        *
+        * @param sda I2C data port
+        * @param scl I2C clock port
+        * @param frequency 
+        * 
+        */ 
+      MMA8452(PinName sda, PinName scl, int frequency);
+       
+      /// Destructor
+      ~MMA8452();
+      
+      /**
+       * Puts the MMA8452 in active mode.
+       * @return 0 on success, 1 on failure.
+       */
+      int activate();
+ 
+      /**
+       * Puts the MMA8452 in standby.
+       * @return 0 on success, 1 on failure.
+       */
+      int standby();      
+    
+       /**
+        * Read the device ID from the accelerometer (should be 0x2a)
+        *
+        * @param dst pointer to store the ID
+        * @return 0 on success, 1 on failure.
+        */        
+      int getDeviceID(char* dst);  
+      
+      /**
+       * Read the MMA8452 status register.
+       *
+       * @param dst pointer to store the register value.
+       * @ return 0 on success, 1 on failure.
+       */
+      int getStatus(char* dst);  
+      
+      /** 
+       * Read the raw x, y, an z registers of the MMA8452 in one operation.
+       * All three registers are read sequentially and stored in the provided buffer.
+       * The stored values are signed 2's complement left-aligned 12 or 8 bit integers.
+       *
+       * @param dst The destination buffer. Note that this needs to be 3 bytes for
+       * BIT_DEPTH_8 and 6 bytes for BIT_DEPTH_12. It is upto the caller to ensure this.
+       * @return 0 for success, and 1 for failure
+       * @sa setBitDepth
+       */ 
+      int readXYZRaw(char *dst);
+      
+      /// Read the raw x register into the provided buffer. @sa readXYZRaw
+      int readXRaw(char *dst);
+      /// Read the raw y register into the provided buffer. @sa readXYZRaw
+      int readYRaw(char *dst);
+      /// Read the raw z register into the provided buffer. @sa readXYZRaw
+      int readZRaw(char *dst);
+      
+      /**
+       * Read the x, y, and z signed counts of the MMA8452 axes.
+       * 
+       * Count resolution is either 8 bits or 12 bits, and the range is either +-2G, +-4G, or +-8G
+       * depending on settings. The number of counts per G are 1024, 512, 256 for 2,4, and 8 G
+       * respectively at 12 bit resolution and 64, 32, 16 for 2, 4, and 8 G respectively at
+       * 8 bit resolution.
+       * 
+       * This function queries the MMA8452 and returns the signed counts for each axes.
+       *
+       * @param x Pointer to integer to store x count
+       * @param y Pointer to integer to store y count
+       * @param z Pointer to integer to store z count
+       * @return 0 on success, 1 on failure.
+       */
+      int readXYZCounts(int *x, int *y, int *z);
+      
+      /// Read the x axes signed count. @sa readXYZCounts
+      int readXCount(int *x);
+      /// Read the y axes signed count. @sa readXYZCounts
+      int readYCount(int *y);
+      /// Read the z axes signed count. @sa readXYZCounts
+      int readZCount(int *z);
+      
+      /**
+       * Read the x, y, and z accelerations measured in G.
+       *
+       * The measurement resolution is controlled via setBitDepth which can
+       * be 8 or 12, and by setDynamicRange, which can be +-2G, +-4G, or +-8G.
+       *
+       * @param x A pointer to the double to store the x acceleration in.
+       * @param y A pointer to the double to store the y acceleration in.
+       * @param z A pointer to the double to store the z acceleration in.
+       *
+       * @return 0 on success, 1 on failure.
+       */
+      int readXYZGravity(double *x, double *y, double *z);
+      
+      /// Read the x gravity in G into the provided double pointer. @sa readXYZGravity
+      int readXGravity(double *x);
+      /// Read the y gravity in G into the provided double pointer. @sa readXYZGravity
+      int readYGravity(double *y);
+      /// Read the z gravity in G into the provided double pointer. @sa readXYZGravity
+      int readZGravity(double *z);
+      
+      /// Returns 1 if data has been internally sampled (is available) for all axes since last read, 0 otherwise.
+      int isXYZReady();
+      /// Returns 1 if data has been internally sampled (is available) for the x-axis since last read, 0 otherwise.
+      int isXReady();
+      /// Returns 1 if data has been internally sampled (is available) for the y-axis since last read, 0 otherwise.
+      int isYReady();
+      /// Returns 1 if data has been internally sampled (is available) for the z-axis since last read, 0 otherwise.
+      int isZReady();
+            
+      /** 
+       * Reads a single byte from the specified MMA8452 register.
+       *
+       * @param addr The internal register address.
+       * @param dst The destination buffer address.
+       * @return 1 on success, 0 on failure.
+       */
+      int readRegister(char addr, char *dst);
+      
+      /** 
+       * Reads n bytes from the specified MMA8452 register.
+       *
+       * @param addr The internal register address.
+       * @param dst The destination buffer address.
+       * @param nbytes The number of bytes to read.
+       * @return 1 on success, 0 on failure.
+       */
+      int readRegister(char addr, char *dst, int nbytes);
+        
+       /** 
+        * Write to the specified MMA8452 register.
+        *
+        * @param addr The internal register address
+        * @param data Data byte to write
+        */    
+      int writeRegister(char addr, char data);
+      
+       /** 
+        * Write a data buffer to the specified MMA8452 register.
+        *
+        * @param addr The internal register address
+        * @param data Pointer to data buffer to write
+        * @param nbytes The length of the data buffer to write
+        */    
+      int writeRegister(char addr, char *data, int nbytes);
+      
+      int setDynamicRange(DynamicRange range, int toggleActivation=1);
+      int setBitDepth(BitDepth depth, int toggleActivation=1);
+      int setDataRate(DataRateHz dataRate, int toggleActivation=1);
+      
+      DynamicRange getDynamicRange();
+      DataRateHz getDataRate();
+      BitDepth getBitDepth();
+      
+      #ifdef MMA8452_DEBUG
+      void debugRegister(char reg);
+      #endif
+   
+    private:
+      /**
+       * Reads the specified register, applies the mask with logical AND, logical ORs the value
+       * and writes back the result to the register. If toggleActivation is set to true then the
+       * device is put in standby before the operation, and activated at the end.
+       * Setting it to false is useful for setting options on a device that you want to keep in
+       * standby.
+       */
+      int maskAndApplyRegister(char reg, char mask, char value, int toggleActivation);
+      
+      /// Reads the specified register, applies the mask with logical AND, and writes the result back.
+      int logicalANDRegister(char addr, char mask);
+      /// Reads the specified register, applies the mask with logical OR, and writes the result back.
+      int logicalORRegister(char addr, char mask);
+      /// Reads the specified register, applies the mask with logical XOR, and writes the result back.
+      int logicalXORRegister(char addr, char mask);
+      
+      /// Converts the 12-bit two's complement number in buf to a signed integer. Returns the integer.
+      int twelveBitToSigned(char *buf);
+      /// Converts the 8-bit two's complement number in buf to a signed integer. Returns the integer.
+      int eightBitToSigned(char *buf);
+      
+      /// Converts a count to a gravity using the supplied countsPerG. Returns the gravity.
+      double convertCountToGravity(int count, int countsPerG);
+      
+      /// Reads the register at addr, applies the mask with logical AND, and returns the result.
+      char getMaskedRegister(int addr, char mask);
+      
+      /// Get the counts per G for the current settings of bit depth and dynamic range.
+      int getCountsPerG();
+    
+      I2C _i2c;
+      int _frequency;
+      int _readAddress;
+      int _writeAddress;
+      
+      BitDepth _bitDepth;
+      DynamicRange _dynamicRange;       
+};
+            
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/PinDetect.lib	Wed Nov 08 20:25:03 2017 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/AjK/code/PinDetect/#cb3afc45028b

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ScreenObject.cpp	Wed Nov 08 20:25:03 2017 +0000
@@ -0,0 +1,49 @@
+#include "ScreenObject.h"
+
+int ScreenObject::getX() const {
+    return xPos;
+}
+
+int ScreenObject::getY() const {
+    return yPos;   
+}
+
+int ScreenObject::getHeight() const {
+    return height;
+}
+
+int ScreenObject::getWidth() const {
+    return width;
+}
+
+int* ScreenObject::getSprite() const {
+    return sprite;
+}
+
+bool ScreenObject::getDestroyed() const {
+    return destroyed;
+}
+
+void ScreenObject::setX(int xPos) {
+    this->xPos = xPos;
+}
+
+void ScreenObject::setY(int yPos) {
+    this->yPos = yPos;   
+}
+
+void ScreenObject::setHeight(int height) {
+    this->height = height;
+}
+
+void ScreenObject::setWidth(int width) {
+    this->width = width;
+}
+
+void ScreenObject::setSprite(int * sprite) {
+    this->sprite = sprite;
+}
+
+void ScreenObject::setDestroyed(bool destroyed) {
+    this->destroyed = destroyed;
+}
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ScreenObject.h	Wed Nov 08 20:25:03 2017 +0000
@@ -0,0 +1,59 @@
+#ifndef __SCREENOBJECT_H__
+#define __SCREENOBJECT_H__
+
+#include "uLCD_4DGL.h"
+
+#define ASTEROID_HEIGHT 12
+#define ASTEROID_WIDTH 15
+#define SPRITE_MAX 15
+#define EARTH_WIDTH 10
+#define EARTH_HEIGHT 10
+#define EXPLOSION1_WIDTH 20
+#define SCREEN_MAX 125
+#define SCREEN_MIN 1
+#define NUM_ASTEROIDS 4
+#define Q 0x808000 //OLIVE
+#define I 0x008000 //GREEN
+#define S 0xC0C0C0 //SILVER
+#define C 0x17202A //UFO GLASS
+#define D 0x797D7F //DARK GREY
+#define L 0x00FF00 //LIME
+#define P 0xFF00FF //PINK
+#define R 0xF1C40F //YELLOW
+#define O 0xF39C12 //ORANGE
+#define G 0xAAB7B8 //GREY
+#define _ 0x000000 //BLACK
+#define X 0xFFFFFF //WHITE
+#define B 0x0000FF //BLUE
+#define r 0xFF0000 //RED
+
+static uLCD_4DGL uLCD(p28, p27, p29);
+
+class ScreenObject {
+    public:
+    virtual void draw() = 0;
+    virtual void update() = 0;
+    int getX() const;
+    int getY() const;
+    int getHeight() const;
+    int getWidth() const;
+    int* getSprite() const;
+    bool getDestroyed() const;
+    void setX(int);
+    void setY(int);
+    void setHeight(int);
+    void setWidth(int);
+    void setSprite(int *);
+    void setDestroyed(bool);
+    
+    
+    private:
+    int xPos;
+    int yPos;
+    int height;
+    int width;
+    int* sprite;
+    bool destroyed;
+};
+
+#endif
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/SpaceShipEarth.cpp	Wed Nov 08 20:25:03 2017 +0000
@@ -0,0 +1,46 @@
+#include "SpaceShipEarth.h"
+
+int spaceship_earth1[EARTH_WIDTH *EARTH_HEIGHT] = {
+    _,_,S,S,S,S,S,S,_,_,
+    _,S,I,I,I,I,I,I,S,_,
+    S,I,I,I,I,I,I,I,I,S,
+    S,I,I,I,I,I,I,I,I,S,
+    S,I,I,I,I,I,I,I,I,S,
+    S,I,I,I,I,I,I,I,I,S,
+    S,I,I,I,I,I,I,I,I,S,
+    S,I,I,I,I,I,I,I,I,S,
+    S,I,I,I,I,I,I,I,S,_,
+    _,S,S,S,S,S,S,S,_,_,
+ };
+ 
+int earthErase[EARTH_WIDTH * EARTH_HEIGHT] = {
+    _,_,_,_,_,_,_,_,_,_,
+    _,_,_,_,_,_,_,_,_,_,
+    _,_,_,_,_,_,_,_,_,_,
+    _,_,_,_,_,_,_,_,_,_,
+    _,_,_,_,_,_,_,_,_,_,
+    _,_,_,_,_,_,_,_,_,_,
+    _,_,_,_,_,_,_,_,_,_,
+    _,_,_,_,_,_,_,_,_,_,
+    _,_,_,_,_,_,_,_,_,_,
+    _,_,_,_,_,_,_,_,_,_, 
+};
+
+SpaceShipEarth::SpaceShipEarth() {
+    setX(63);
+    setY(63);
+    setSprite(spaceship_earth1);
+    setDestroyed(false);
+    setHeight(EARTH_HEIGHT);
+    setWidth(EARTH_WIDTH);
+}
+
+void SpaceShipEarth::draw() {
+    uLCD.BLIT(getX() - (EARTH_WIDTH / 2), getY() - (EARTH_HEIGHT / 2),
+        EARTH_WIDTH, EARTH_HEIGHT, getSprite());
+}
+
+void SpaceShipEarth::update() {
+    uLCD.BLIT(getX() - (EARTH_WIDTH / 2), getY() - (EARTH_HEIGHT / 2),
+        EARTH_WIDTH, EARTH_HEIGHT, earthErase);
+}
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/SpaceShipEarth.h	Wed Nov 08 20:25:03 2017 +0000
@@ -0,0 +1,8 @@
+#include "ScreenObject.h"
+
+class SpaceShipEarth : public ScreenObject {
+    public:
+    SpaceShipEarth();
+    virtual void draw();
+    virtual void update();  
+};
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Speaker.h	Wed Nov 08 20:25:03 2017 +0000
@@ -0,0 +1,19 @@
+#include "mbed.h"
+// new class to play a note on Speaker based on PwmOut class
+class Speaker
+{
+public:
+    Speaker(PinName pin) : _pin(pin) {
+// _pin(pin) means pass pin to the Speaker Constructor
+    }
+// class method to play a note based on PwmOut class
+    void PlayNote(float frequency, float duration, float volume) {
+        _pin.period(1.0/frequency);
+        _pin = volume/2.0;
+        wait(duration);
+        _pin = 0.0;
+    }
+
+private:
+    PwmOut _pin;
+};
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed Nov 08 20:25:03 2017 +0000
@@ -0,0 +1,337 @@
+#include "mbed.h"
+#include "MMA8452.h"
+#include "ScreenObject.h"
+#include "SpaceShipEarth.h"
+#include "Asteroid1.h"
+#include "Asteroid2.h"
+#include "Asteroid3.h"
+#include "Asteroid4.h"
+#include "PinDetect.h"
+#include "Speaker.h"
+#include <ctime>
+
+int asteroid_sprite_1[ASTEROID_HEIGHT * ASTEROID_WIDTH] = {
+ _,_,_,_,X,X,X,X,X,X,X,X,_,_,_,
+ _,_,_,X,_,_,_,_,_,_,_,_,X,_,_,
+ _,_,X,_,_,_,_,_,_,_,_,_,X,_,_,
+ _,X,_,_,_,_,_,_,_,_,_,_,X,_,_,
+ X,X,X,X,_,_,_,_,_,_,_,_,_,X,_,
+ _,_,_,X,_,_,_,_,_,_,_,_,_,X,_,
+ _,_,X,_,_,_,_,_,_,_,_,_,_,X,_,
+ _,X,_,_,_,_,_,X,_,_,_,_,_,X,_,
+ X,_,_,_,_,_,X,X,_,_,_,_,X,_,_,
+ _,X,_,_,_,X,_,X,_,_,_,_,X,_,_,
+ _,_,X,_,X,_,_,X,_,_,_,X,_,_,_,
+ _,_,_,X,_,_,_,X,X,X,X,_,_,_,_
+
+};
+
+int asteroid_sprite_2[ASTEROID_HEIGHT * ASTEROID_WIDTH] = {
+ _,_,_,X,_,_,_,_,_,X,_,_,_,_,_,
+ _,_,X,_,X,_,_,_,X,_,X,_,_,_,_,
+ _,X,_,_,_,X,_,X,_,_,_,X,_,_,_,
+ X,_,_,_,_,_,X,_,_,_,_,_,X,_,_,
+ X,_,_,_,_,_,_,_,_,_,_,_,_,X,_,
+ X,_,_,_,_,_,_,_,_,_,_,_,_,_,X,
+ X,_,_,_,_,_,_,_,_,_,_,_,_,X,_,
+ X,_,_,_,_,_,_,_,_,_,_,_,X,_,_,
+ X,_,_,_,_,_,_,_,_,_,_,_,_,X,_,
+ _,X,_,_,_,_,_,_,_,_,_,_,_,_,X,
+ _,_,X,_,_,_,_,_,_,_,_,_,_,X,_,
+ _,_,_,X,X,X,X,X,X,X,X,X,X,_,_
+
+};
+
+int asteroid_sprite_3[ASTEROID_HEIGHT * ASTEROID_WIDTH] = {
+ _,_,_,X,X,X,X,X,X,X,X,X,_,_,_,
+ _,_,_,X,_,_,_,_,_,_,_,_,X,_,_,
+ _,_,_,_,X,_,_,_,_,_,_,_,_,X,_,
+ X,X,X,X,X,X,_,_,_,_,_,X,X,X,_,
+ X,_,_,_,_,_,_,_,X,X,X,_,_,_,_,
+ X,_,_,_,_,_,_,X,_,_,_,_,_,_,_,
+ X,_,_,_,_,_,_,_,X,X,X,_,_,_,_,
+ X,_,_,_,_,_,_,_,_,_,_,X,X,X,_,
+ X,_,_,_,_,_,_,_,_,_,_,_,_,_,X,
+ _,X,_,_,_,_,_,_,X,X,X,_,_,_,X,
+ _,_,X,_,_,X,X,X,_,_,_,X,_,X,_,
+ _,_,_,X,X,_,_,_,_,_,_,_,X,_,_
+
+};
+
+int asteroid_sprite_4[ASTEROID_HEIGHT * ASTEROID_WIDTH] = {
+ _,_,_,X,_,_,_,_,_,_,_,X,_,_,_,
+ _,X,X,_,X,X,_,_,_,X,X,_,X,_,_,
+ X,_,_,_,_,_,X,X,X,_,_,_,_,X,_,
+ _,X,_,_,_,_,_,_,_,_,_,_,_,_,X,
+ _,X,_,_,_,_,_,_,_,_,_,_,_,_,X,
+ _,_,X,_,_,_,_,_,_,_,_,_,X,X,_,
+ _,_,X,_,_,_,_,_,_,_,_,X,_,_,_,
+ _,X,_,_,_,_,_,_,_,_,_,_,X,X,_,
+ _,X,_,_,_,X,_,_,_,_,_,_,_,_,X,
+ X,_,_,_,X,_,X,X,_,_,_,_,_,X,_,
+ _,X,_,X,_,_,_,_,X,X,_,_,X,_,_,
+ _,_,X,_,_,_,_,_,_,_,X,X,_,_,_
+
+};
+
+int explosion[EARTH_HEIGHT * EARTH_WIDTH] = {
+    _,_,r,_,_,r,_,_,_,_,
+    _,r,r,_,r,O,r,_,_,_,
+    r,O,O,r,O,R,O,r,_,r,
+    _,r,O,R,R,R,R,O,r,r,
+    _,_,r,O,R,R,R,R,O,r,
+    _,r,O,R,R,R,R,O,r,_,
+    _,r,O,R,R,R,R,O,r,_,
+    r,O,O,r,O,r,r,O,O,r,
+    r,O,r,_,r,_,_,r,O,r,
+    _,r,_,_,_,_,_,_,r,r,
+};
+
+int erase[EARTH_WIDTH * EARTH_HEIGHT] = {
+    _,_,_,_,_,_,_,_,_,_,
+    _,_,_,_,_,_,_,_,_,_,
+    _,_,_,_,_,_,_,_,_,_,
+    _,_,_,_,_,_,_,_,_,_,
+    _,_,_,_,_,_,_,_,_,_,
+    _,_,_,_,_,_,_,_,_,_,
+    _,_,_,_,_,_,_,_,_,_,
+    _,_,_,_,_,_,_,_,_,_,
+    _,_,_,_,_,_,_,_,_,_,
+    _,_,_,_,_,_,_,_,_,_, 
+};
+
+bool bombUsed = false;
+bool explodeAllAsteroids = false;
+
+Asteroid1::Asteroid1() {
+    setX((rand() % (64 - EARTH_WIDTH - ASTEROID_WIDTH) + (ASTEROID_WIDTH / 2)));
+    setY((rand() % (64 - EARTH_HEIGHT - ASTEROID_HEIGHT)
+        + (ASTEROID_HEIGHT / 2)));
+    setX((rand() % 2 == 0) ? getX() : 128 - getX());
+    setY((rand() % 2 == 0) ? getY() : 128 - getY());
+    setXPath((rand() % 2 + 1) * (getX() > 63 ? -1 : 1));
+    setYPath((rand() % 2 + 1) * (getY() > 63 ? -1 : 1));
+    setSpeed(1);
+    setSprite(asteroid_sprite_1);
+    setDestroyed(false);
+    setHeight(ASTEROID_HEIGHT);
+    setWidth(ASTEROID_WIDTH);
+}
+
+Asteroid2::Asteroid2() {
+    setX((rand() % (64 - EARTH_WIDTH - ASTEROID_WIDTH) + (ASTEROID_WIDTH / 2)));
+    setY((rand() % (64 - EARTH_HEIGHT - ASTEROID_HEIGHT)
+        + (ASTEROID_HEIGHT / 2)));
+    setX((rand() % 2 == 0) ? getX() : 128 - getX());
+    setY((rand() % 2 == 0) ? getY() : 128 - getY());
+    setXPath((rand() % 4 + 1) * (getX() > 63 ? -1 : 1));
+    setYPath((rand() % 4 + 1) * (getY() > 63 ? -1 : 1));
+    setSpeed(1);
+    setSprite(asteroid_sprite_2);
+    setDestroyed(false);
+    setHeight(ASTEROID_HEIGHT);
+    setWidth(ASTEROID_WIDTH);
+}
+
+Asteroid3::Asteroid3() {
+    setX((rand() % (64 - EARTH_WIDTH - ASTEROID_WIDTH) + (ASTEROID_WIDTH / 2)));
+    setY((rand() % (64 - EARTH_HEIGHT - ASTEROID_HEIGHT)
+        + (ASTEROID_HEIGHT / 2)));
+    setX((rand() % 2 == 0) ? getX() : 128 - getX());
+    setY((rand() % 2 == 0) ? getY() : 128 - getY());
+    setXPath((rand() % 2 + 1) * (getX() > 63 ? -1 : 1));
+    setYPath((rand() % 2 + 1) * (getY() > 63 ? -1 : 1));
+    setSpeed(1);
+    setSprite(asteroid_sprite_3);
+    setDestroyed(false);
+    setHeight(ASTEROID_HEIGHT);
+    setWidth(ASTEROID_WIDTH);
+}
+
+Asteroid4::Asteroid4() {
+    setX((rand() % (64 - EARTH_WIDTH - ASTEROID_WIDTH) + (ASTEROID_WIDTH / 2)));
+    setY((rand() % (64 - EARTH_HEIGHT - ASTEROID_HEIGHT)
+        + (ASTEROID_HEIGHT / 2)));
+    setX((rand() % 2 == 0) ? getX() : 128 - getX());
+    setY((rand() % 2 == 0) ? getY() : 128 - getY());
+    setXPath((rand() % 2 + 1) * (getX() > 63 ? -1 : 1));
+    setYPath((rand() % 2 + 1) * (getY() > 63 ? -1 : 1));
+    setSpeed(1);
+    setSprite(asteroid_sprite_4);
+    setDestroyed(false);
+    setHeight(ASTEROID_HEIGHT);
+    setWidth(ASTEROID_WIDTH);
+}
+
+
+bool overlap(ScreenObject & object1, ScreenObject & object2) {
+    int delX = object1.getX() - object2.getX();
+    int delY = object1.getY() - object2.getY();
+    delX = (delX > 0 ? delX : -delX);
+    delY = (delY > 0 ? delY : -delY);
+    if (delX < (object1.getWidth() + object2.getWidth()) / 2) {
+        if (delY < (object1.getHeight() + object2.getHeight()) / 2) {
+            return true;
+        }
+    }
+    return false;
+}
+
+
+void pb1_hit_callback(void) {
+    if (!bombUsed) {
+        explodeAllAsteroids = true;
+        bombUsed = true;
+        return;
+    }
+    return;
+}
+
+Serial pc(USBTX,USBRX);
+PinDetect pb1(p16);
+Speaker mySpeaker(p21);
+
+int main() {
+    set_time(0);
+    pb1.mode(PullUp);
+    wait(0.1);
+    pb1.attach_deasserted(&pb1_hit_callback);
+    pb1.setSampleFrequency();    
+    uLCD_4DGL uLCD(p28, p27, p29);
+    uLCD.baudrate(300000);
+    wait(0.2);
+    srand(time(0)); // do this srand call here ONLY... no where else in the code!
+
+    ScreenObject * ActiveAsteroids[NUM_ASTEROIDS];
+    for (int i = 0; i < NUM_ASTEROIDS; i++) {
+        int asteroidNum = rand() % 4 + 1;
+        switch (asteroidNum) {
+            case 1:
+                ActiveAsteroids[i] = new Asteroid1;
+                break;
+            case 2:
+                ActiveAsteroids[i] = new Asteroid2;
+                break;
+            case 3:
+                ActiveAsteroids[i] = new Asteroid3;
+                break;
+            case 4:
+                ActiveAsteroids[i] = new Asteroid4;
+                break;
+        }
+    }
+    
+    SpaceShipEarth ship;
+    double x = 0.0, y = 0.0, z = 0.0, factor = 50.0;
+    int offsetx = 63;
+    int offsety = 63;
+    MMA8452 acc(p9, p10, 40000);
+    acc.setBitDepth(MMA8452::BIT_DEPTH_12);
+    acc.setDynamicRange(MMA8452::DYNAMIC_RANGE_4G);
+    acc.setDataRate(MMA8452::RATE_100);
+    
+    bool gameOver = false;
+    bool gameWon = false;
+    time_t startTime;
+    startTime = time(0);
+    time_t timeElapsed = time(0)-startTime;
+    
+    uLCD.filled_rectangle(0, 0, 127, 2, B); 
+    mySpeaker.PlayNote(400.0, .25, .1);
+    wait(0.2);
+    mySpeaker.PlayNote(200.0, .25, .1);
+    wait(0.2);
+    mySpeaker.PlayNote(100.0, .25, .1);
+    while (!gameOver) {
+        if (timeElapsed >= 30) {
+            gameWon = true;
+            gameOver = true;
+        } 
+        uLCD.filled_rectangle(127 - (127*timeElapsed)/30, 0, 127, 2, _);
+        if (explodeAllAsteroids) {
+            for (int i = 0; i < NUM_ASTEROIDS; i++) {
+                ActiveAsteroids[i]->update();
+                uLCD.BLIT(ActiveAsteroids[i]->getX() - (EARTH_WIDTH / 2),
+                        ActiveAsteroids[i]->getY() - (EARTH_HEIGHT / 2),
+                        EARTH_WIDTH, EARTH_HEIGHT, explosion);
+                mySpeaker.PlayNote(100.0, .1, .2);
+                wait(0.1);
+                mySpeaker.PlayNote(50.0, .1, .2);
+                uLCD.BLIT(ActiveAsteroids[i]->getX() - (EARTH_WIDTH / 2),
+                        ActiveAsteroids[i]->getY() - (EARTH_HEIGHT / 2),
+                        EARTH_WIDTH, EARTH_HEIGHT, erase);
+                delete ActiveAsteroids[i];
+                int asteroidNum = rand() % 4 + 1;
+                switch (asteroidNum) {
+                    case 1:
+                        ActiveAsteroids[i] = new Asteroid1;
+                        break;
+                    case 2:
+                        ActiveAsteroids[i] = new Asteroid2;
+                        break;
+                    case 3:
+                        ActiveAsteroids[i] = new Asteroid3;
+                        break;
+                    case 4:
+                        ActiveAsteroids[i] = new Asteroid4;
+                        break;
+                }
+            }
+            explodeAllAsteroids = false;    
+        }
+        timeElapsed = time(0) - startTime;
+        ship.update();
+        for (int i = 0; i < NUM_ASTEROIDS; i++) {
+            ActiveAsteroids[i]->update();
+        }
+        if (!acc.isXYZReady()) {
+            wait(.01);
+        } else {
+            acc.readXYZGravity(&y, &x, &z);
+            ship.setX(-1 * x * factor + offsetx);
+            ship.setY(-1 * y * factor + offsety);
+            ship.draw();
+            for (int i = 0; i < NUM_ASTEROIDS; i++) {
+                if (ActiveAsteroids[i]->getDestroyed()) {
+                    delete ActiveAsteroids[i];
+                    int asteroidNum = rand() % 4 + 1;
+                    switch (asteroidNum) {
+                        case 1:
+                            ActiveAsteroids[i] = new Asteroid1;
+                            break;
+                        case 2:
+                            ActiveAsteroids[i] = new Asteroid2;
+                            break;
+                        case 3:
+                            ActiveAsteroids[i] = new Asteroid3;
+                            break;
+                        case 4:
+                            ActiveAsteroids[i] = new Asteroid4;
+                            break;
+                    }
+                }
+                ActiveAsteroids[i]->draw();
+                if (overlap(ship, *ActiveAsteroids[i])) {
+                    gameOver = true;
+                    mySpeaker.PlayNote(100.0, .1, .1);                                        
+                    uLCD.BLIT(ship.getX() - (EARTH_WIDTH / 2),
+                        ship.getY() - (EARTH_HEIGHT / 2),
+                        EARTH_WIDTH, EARTH_HEIGHT, explosion);
+                    mySpeaker.PlayNote(50.0, .1, .1);
+                }
+            }
+        }
+    }
+    ship.update();
+    for (int i = 0; i < NUM_ASTEROIDS; i++) {
+        ActiveAsteroids[i]->update();
+    }
+    if (gameWon) {
+        uLCD.printf("You Won!");
+        mySpeaker.PlayNote(200.0, .2, .1);
+        wait(.1);
+        mySpeaker.PlayNote(800.0, .2, .1);
+    } else {
+        uLCD.printf("You lose...");
+    }
+}
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Wed Nov 08 20:25:03 2017 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/fb8e0ae1cceb
\ No newline at end of file