ELEC2645 (2015/16)
My ELEC2645 joystick project Tetris Game NAME: JIANWEI CHEN SID: 200879849
Dependencies: N5110 SDFileSystem mbed
Revision 4:463abe5f5135, committed 2016-05-05
- Comitter:
- cjw851102
- Date:
- Thu May 05 09:18:01 2016 +0000
- Parent:
- 3:5494a0fb3a33
- Commit message:
- Final version
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/Game.h Thu May 05 09:18:01 2016 +0000
@@ -0,0 +1,816 @@
+/**
+@file Game.h
+@brief Header file containing functions prototypes, defines and global variables for the tetris game.
+@brief Revision 1.0.
+@author JIANWEI CHEN
+@date May 2016
+*/
+
+#ifndef GAME_H
+#define GAME_H
+
+#include "mbed.h"
+#include "Patterns.h"
+#include "N5110.h"
+#include "SDFileSystem.h"
+#include "main.h"
+
+//! Create patterns object
+Patterns patterns;
+/**
+Create ticker object for game
+@brief ticker to control the speed of game
+*/
+Ticker game;
+
+////////////////////////////////////////////////////////
+// Variables
+////////////////////////////////////////////////////////
+
+int xOld; /*!< Variable for storing the pattern previous position when game is runnung */
+int typeCount = 0; /*!< Variable for counting elements in array typeArray[100]*/
+int nextTypeCount; /*!< Variable to show the position of next element in typeArray[100] i.e. nextTypeCount=typeCount+1*/
+
+/** Flag to show left hand side conllision of pattern
+@note flag = 0 - there is no collision on the left
+@note flag = 1 - there is collision on the left
+*/
+int left_collision_flag = 0;
+
+/** Flag to show right hand side conllision of pattern
+@note flag = 0 - there is no collision
+@note flag = 1 - there is collision
+*/
+int right_collision_flag = 0;
+
+/** Flag to show bottom conllision of pattern
+@note flag = 0 - there is no collision
+@note flag = 1 - there is collision
+*/
+int bottom_collision_flag = 0;
+
+/** Flag to show top conllision of pattern
+@note flag = 0 - there is no collision
+@note flag = 1 - there is collision
+*/
+int top_collision_flag = 0;
+
+/** Flag to show if there is pixels set on the 4 pixels distance away from the bottom of pattern
+@brief if flag = 0, user can pull joystick down to make pattern falling faster
+@note flag = 0 - there is no collision
+@note flag = 1 - there is collision
+*/
+int fastmove_bottom_collision_flag = 0;
+
+/** Flag to show if allow patterns to rotate
+@note flag = 0 - allow
+@note flag = 1 - not allow
+*/
+int rotation_collision_flag = 0;
+
+/** Two dimension array to store current pattern pixels setting in a 6x6 square
+@note For example, if current pattern is "L"
+@note the pixels setting is
+@note 1 1 0 0 0 0
+@note 1 1 0 0 0 0
+@note 1 1 0 0 0 0
+@note 1 1 0 0 0 0
+@note 1 1 1 1 0 0
+@note 1 1 1 1 0 0
+*/
+int pattern_buffer[6][6];
+
+/** Array to store types of pattern
+@brief 100 random integers in the range of 0~6
+@brief will be stored in the array in order to generate
+@brief random type of pattern each time new pattern is generated
+*/
+int typeArray[100];
+int buffer[84][48]; /*!< Array to store whole screen pixel settings */
+int score=0; /*!< Variable to store score in the game */
+volatile int g_game_flag = 0; /*!< Flag for game ticker */
+
+/** Struct for position
+@brief Contains the pattern position(x,y),
+@brief pattern type and rotation
+*/
+struct Position {
+ float x;
+ float y;
+ int type;
+ int rotation;
+};
+typedef struct Position position;
+position pos;
+
+////////////////////////////////////////////////////////////////////////
+// Functions
+////////////////////////////////////////////////////////////////////////
+/**
+Game ticker isr function
+*/
+void game_isr();
+
+/**
+Initialise the variables in game
+*/
+void init_game();
+
+/** Drawing the pattern at position (x,y)
+@param type - type of pattern (0~6)
+@param rotation - rotation of pattern (0~3)
+@param x - x co-ordinate of pattern, which is the top left corner pixel of 6x6 square
+@param y - y co-ordinate of pattern, which is the top left corner pixel of 6x6 square
+@param fill - fill = 0 white, fill = 1 black
+*/
+void drawPattern(int type,int rotation,int x,int y,int fill);
+
+/**Left collision detect
+@brief Function to check the left collision of current falling pattern and set the left_collision_flag
+*/
+void left_collisionDetect();
+
+/**Right collision detect
+@brief Function to check the right collision of current falling pattern and set the left_collision_flag
+*/
+void right_collisionDetect();
+
+/**Bottom collision detect
+@brief Function to check the bottom collision of current falling pattern and set the right_collision_flag
+*/
+void bottom_collisionDetect();
+
+/**top collision detect
+@brief Function to check the top collision of current falling pattern and set the top_collision_flag
+*/
+void top_collisionDetect();
+
+/**Rotation collision detect
+@brief Function to check if the program should allow user to rotate the pattern and set the rotation_collision_flag
+*/
+void rotation_collisionDetect();
+
+/**Fast move collision detect
+@brief Function to check if the program should allow user to move the pattern falling faster and set the fastmove_collision_flag
+@note check the 4 pixels distance away from the bottom of pattern
+*/
+void fastmove_bottom_collisionDetect();
+
+/**Get pattern pixel settings
+@brief Function to get the current falling pattern pixel settings
+@note pixels setting will be store in pattern_buffer[6][6];
+@param type - type of pattern (0~6)
+@param rotation - rotation of pattern (0~3)
+*/
+void get_pattern(int type, int rotatin);
+
+/**Scan the whole screen pixel settings
+@brief Function to store the whole screen pixel settings and store in buffer[84][48]
+*/
+void scan();
+
+/** Cancel the filled lines and add the score
+@brief Function to check if there are lines filled
+@brief if one line is filled, cancel it and move the pixels above this line down and add the score
+*/
+void cancelLine();
+
+/**
+Game finish animations
+*/
+void finishAnimation();
+
+/** User press button when game is in process
+@brief When button pressed in the game, ask user if they want to exit the game
+@return TRUE - exit the game FALSE - contiute the game
+*/
+bool buttonPressedInGame();
+
+/**Save the highest score to SD card
+@param score - a integer number need to save to SD card
+*/
+void save_score_SD(int score);
+
+/**
+Read the highest score from SD card
+*/
+int read_score_SD();
+
+/**
+Complete tetris game
+*/
+void tetis_game();
+
+
+/////////////////////////////////////////////////
+/// Function Definitions
+/////////////////////////////////////////////////
+
+void tetis_game()
+{
+ bool exitGame; //bool variable to save the exit game decision when button pressed
+ while (1) {
+ if(g_game_flag==1) {
+ g_game_flag = 0;
+
+ exitGame=buttonPressedInGame(); //check if user press button and get the decision
+ if(exitGame) { // exit game
+ break; //jump out of while loop
+ }
+
+ pos.type = typeArray[typeCount]; //get the pattern type
+ nextTypeCount=typeCount+1;
+ if (nextTypeCount>99) { //start from the first element in type array
+ nextTypeCount=0;
+ }
+ drawPattern(typeArray[nextTypeCount],0,55,41,1);// draw next pattern on the right hand side of screen
+ if (pos.y >= -5) { // when pattern start falling, clear previous pattern
+ drawPattern(pos.type,pos.rotation,xOld,pos.y-1,0);
+ }
+
+ updateJoystick(); //get the joystick direction
+
+ top_collisionDetect(); // check if current pattern touch the top
+ if (top_collision_flag == 1) { // if touch the top, finish the game
+ red_led=1;
+ green_led=0;
+ //play sound at end of game
+ for(double i=1; i>=0; i-=0.1) {
+ buzzer = i;
+ wait(0.2);
+ }
+ buzzer = 0;
+ finishAnimation(); //finish animation
+ lcd.clear();
+ int stored_score=read_score_SD();
+ if (score>stored_score) { // if score is larger than highest score, save it to SD card
+ save_score_SD(score);
+ }
+ // show the score
+ char scoreBuffer[14];
+ sprintf(scoreBuffer,"%d",score);
+ lcd.printString("SCORE IS: ",10,2);
+ lcd.printString(scoreBuffer,35,4);
+ lcd.refresh();
+ wait(3.0);
+ lcd.clear();
+ state=0; // back to the main menu
+ break;
+ }
+
+ //move patterns according to joystick direction
+ switch(joystick.direction) {
+ case UP: // rotation
+ rotation_collision_flag = 0;
+ rotation_collisionDetect(); // check if allow rotation
+ if(rotation_collision_flag == 0) { // allow rotation
+ pos.rotation++;
+ if (pos.rotation>3) {
+ pos.rotation=0;
+ }
+ drawPattern(pos.type,pos.rotation,pos.x,pos.y,1);
+ } else {// not allow rotation
+ drawPattern(pos.type,pos.rotation,pos.x,pos.y,1);
+ }
+ break;
+ case DOWN: // faster moving down
+ fastmove_bottom_collision_flag = 0;
+ fastmove_bottom_collisionDetect();
+ if (fastmove_bottom_collision_flag == 0) {// allow faster move
+ pos.y +=4; // move pattern down by 4 pixels distance
+ drawPattern(pos.type,pos.rotation,pos.x,pos.y,1);
+ } else {
+ drawPattern(pos.type,pos.rotation,pos.x,pos.y,1);
+ }
+ break;
+ case RIGHT: // move right
+ right_collision_flag = 0;
+ right_collisionDetect(); // detect right collision
+ if( right_collision_flag == 0) { // allow move right
+ pos.x +=2;
+ drawPattern(pos.type,pos.rotation,pos.x,pos.y,1);
+ } else { // not allow move right
+ drawPattern(pos.type,pos.rotation,pos.x,pos.y,1);
+ right_collision_flag = 0;
+ }
+ break;
+ case LEFT: //move left
+ left_collision_flag = 0;
+ left_collisionDetect(); // detect left collision
+ if( left_collision_flag == 0) {// allow move left
+ pos.x -=2;
+ drawPattern(pos.type,pos.rotation,pos.x,pos.y,1);
+ } else { // not allow move left
+ drawPattern(pos.type,pos.rotation,pos.x,pos.y,1);
+ left_collision_flag = 0;
+ }
+
+ break;
+ case CENTRE: // joystick in centre
+ drawPattern(pos.type,pos.rotation,pos.x,pos.y,1);
+ break;
+ case UNKNOWN:
+ drawPattern(pos.type,pos.rotation,pos.x,pos.y,1);
+ break;
+ }
+
+ xOld = pos.x; //store previous pattern x co-codinate
+
+ bottom_collisionDetect(); // bottom collision detect
+ if (bottom_collision_flag == 0) { // no collision
+ pos.y++; // keep moving pattern down
+ buzzer = 0; // turn off buzzer
+ } else { // bottom collision
+ drawPattern(pos.type,pos.rotation,pos.x,pos.y,1); // fix pattern
+ cancelLine(); // check filled lines and add score
+ pos.x = 10; // new pattern will fall from the centre
+ pos.y = -6;
+ pos.rotation=0;
+ drawPattern(typeArray[nextTypeCount],pos.rotation,55,41,0);// clear the old next pattern show on RHS of screen
+ typeCount ++; //new type of pattern
+ if (typeCount >99) {
+ typeCount = 0;
+ }
+ }
+ lcd.refresh();
+ }
+ sleep(); // go to sleep mode unless ticker interupt
+ }
+}
+
+
+void init_game()
+{
+ pos.x = 10;
+ pos.y = -6;
+ pos.rotation=0;
+ typeCount=0;
+ green_led=1; // turn on green led
+ //generate 100 random integers in the range of 0~6
+ //and store in typeArray
+ for(int i=0; i<=99; i++) {
+ typeArray[i] = rand()%7;
+ }
+
+ //gaming screen
+ lcd.drawLine(30,0,30,47,1);
+ lcd.printString("Level:",42,0);
+ lcd.printString("Score:",42,2);
+ lcd.printString("0",42,3);
+ lcd.printString("Next:",42,4);
+
+ //play sound at begining of game
+ for(double i=0; i<=1.0; i+=0.1) {
+ buzzer = i;
+ wait(0.2);
+ }
+ buzzer = 0;
+}
+
+
+void get_pattern(int type, int rotation)
+{
+ for(int i=0; i<=5; i++) {
+ for(int j=0; j<=5; j++) {// patterns.getPatterns(type,rotation,j,i) return pattern[type][rotation][y][x];
+ pattern_buffer[i][j] = patterns.getPatterns(type,rotation,j,i);
+ }
+ }
+}
+
+
+void scan()
+{
+ //screen has 84x48 pixels
+ for (int i=0; i<=83; i++) {
+ for (int j=0; j<=47; j++) {
+ if(lcd.getPixel(i,j)) { //if pixel is set
+ buffer[i][j] = 1;
+ } else { // pixel is clear
+ buffer[i][j] = 0;
+ }
+ }
+ }
+}
+
+// draw pattern at (x,y)
+void drawPattern(int type,int rotation,int x,int y,int fill)
+{
+ get_pattern(type,rotation); // get the pattern pixel settings, which store in pattern_buffer
+ for(int i=x; i <= x+5; i++) { // (x,y) is the left top point of a 6*6 square
+ for(int j=y; j <= y+5; j++) {
+ if (j>=0) {
+ if(pattern_buffer[i-x][j-y]==1) {//pixel setting is 1
+ if (fill==0) { //draw white pattern
+ if (j<=47 && i>=0) { // draw pattern inside the screen
+ lcd.clearPixel(i,j);
+ }
+ } else if (fill==1) { //draw black pattern
+ if (j<=47 && i>=0) {
+ lcd.setPixel(i,j);
+ }
+ }
+ }
+ }
+ }
+ }
+}
+
+
+void left_collisionDetect()
+{
+ int left_boundary[6][6];
+ get_pattern(pos.type,pos.rotation);
+
+ /* get the left boundary pixel settings
+ e.g: if pattern is L
+ left boundary is
+ 1 0 0 0 0 0
+ 1 0 0 0 0 0
+ 1 0 0 0 0 0
+ 1 0 0 0 0 0
+ 1 0 0 0 0 0
+ 1 0 0 0 0 0
+ */
+ for (int j=0; j<=5; j++) { //
+ for (int i=0; i<=5; i++) {
+ if (pattern_buffer[i][j]==1) {
+ left_boundary[i][j]=1;
+ for(int k=i+1; k<=5; k++) {
+ left_boundary[k][j] = 0;
+ }
+ break;
+ } else {
+ left_boundary[i][j]=0;
+ }
+ }
+ }
+
+ //check left collision
+ int x = pos.x;
+ int y = pos.y;
+ if (x<0) { //for all the pattern, when x<0, pattern is on the most LHS of screen
+ left_collision_flag = 1;
+ } else { //check the pixel status away from left boundary for one pixel distance
+ for(int i=x; i <= x+5; i++) { // (x,y) is the left top point of a 6*6 square
+ for(int j=y; j <= y+5; j++) {
+ if(left_boundary[i-x][j-y]==1) {
+ if(i == 0) { // pattern at most LHS of screen
+ left_collision_flag = 1;
+ break; // don't need to check the other pixels at same x, jump out of inner for loop
+ } else if (lcd.getPixel(i-1,j)) { //check one pixel away from left boundary
+ left_collision_flag = 1;
+ break;
+ } else {
+ left_collision_flag = 0;
+ }
+ }
+ }
+ if (left_collision_flag == 1) {
+ break;// jump out of inner for loop
+ }
+ }
+ }
+}
+
+
+void right_collisionDetect()
+{
+ int right_boundary[6][6];
+ get_pattern(pos.type,pos.rotation);
+
+ /* get the right boundary pixel settings
+ e.g: if pattern is L
+ left boundary is
+ 0 0 1 0 0 0
+ 0 0 1 0 0 0
+ 0 0 1 0 0 0
+ 0 0 1 0 0 0
+ 0 0 0 1 0 0
+ 0 0 0 1 0 0
+ */
+ for (int j=0; j<=5; j++) {
+ for (int i=5; i>=0; i--) {
+ if (pattern_buffer[i][j]==1) {
+ right_boundary[i][j]=1;
+ for(int k=i-1; k>=0; k--) {
+ right_boundary[k][j] = 0;
+ }
+ break;
+ } else {
+ right_boundary[i][j]=0;
+ }
+ }
+ }
+
+ //check right collision
+ int x = pos.x;
+ int y = pos.y;
+ for(int i = x; i <= x+5; i++) { // (x,y) is the left top point of a 6*6 square
+ for(int j=y; j <= y+5; j++) {
+ if(right_boundary[i-x][j-y]==1) {
+ if(j>=0) {
+ if(i >= 29) { // most RHS of gaming screen
+ right_collision_flag = 1;
+ break;
+ } else if (lcd.getPixel(i+1,j)) {//check the pixel status away from right boundary for one pixel distance
+ right_collision_flag = 1;
+ break;
+ } else {
+ right_collision_flag = 0;
+ }
+ }
+ }
+ }
+ if (right_collision_flag == 1) {
+ break;
+ }
+ }
+}
+
+
+void bottom_collisionDetect()
+{
+ int bot_boundary[6][6];
+ get_pattern(pos.type,pos.rotation);
+
+ /* get the left boundary pixel settings
+ e.g: if pattern is L
+ left boundary is
+ 0 0 0 0 0 0
+ 0 0 0 0 0 0
+ 0 0 0 0 0 0
+ 0 0 0 0 0 0
+ 0 0 0 0 0 0
+ 1 1 1 1 0 0
+ */
+ for (int i=0; i<=5; i++) {
+ for (int j=5; j>=0; j--) {
+ if (pattern_buffer[i][j]==1) {
+ bot_boundary[i][j]=1;
+ for(int k=j-1; k>=0; k--) {
+ bot_boundary[i][k] = 0;
+ }
+ break;
+ } else {
+ bot_boundary[i][j]=0;
+ }
+ }
+ }
+
+ //check bottom collision
+ int x = pos.x;
+ int y = pos.y;
+ for(int i = x; i <= x+5; i++) { //check from left
+ for(int j=y+5; j >= y; j--) { //check from bottom
+ if (j>=-1) { //start check when pattern fall in the screen
+ if(bot_boundary[i-x][j-y]==1) {
+ if(j >= 47) { // pattern at bottom
+ bottom_collision_flag = 1;
+ break; // jump out of inner for loop
+ } else if (lcd.getPixel(i,j+1)) {//check the pixel status away from bottom boundary for one pixel distance
+ bottom_collision_flag = 1;
+ break;
+ } else {
+ bottom_collision_flag = 0;
+ }
+ }
+ } else { //at bottom of screen
+ bottom_collision_flag = 0;
+ }
+ }
+ if( bottom_collision_flag == 1) {
+ break; // jump out of inner for loop
+ }
+ }
+}
+
+
+void rotation_collisionDetect()
+{
+ int rotation = pos.rotation+1;
+ if (rotation>3) {
+ rotation=0;
+ }
+ get_pattern(pos.type,rotation);
+
+ //check pixel status of upcoming rotation
+ int x = pos.x;
+ int y = pos.y;
+ for(int i = x; i <= x+5; i++) { // (x,y) is the left top point of a 6*6 square
+ for(int j=y; j <= y+5; j++) {
+ if(pattern_buffer[i-x][j-y]==1) {
+ if(i<0) { // out of LHS screen
+ rotation_collision_flag = 1;
+ } else if(lcd.getPixel(i,j)) { // there is pixel set
+ rotation_collision_flag = 1;
+ break; //jump out of inner for loop
+ } else {
+ rotation_collision_flag = 0;
+ }
+ }
+ }
+ if (rotation_collision_flag == 1) {
+ break; //jump out of inner for loop
+ }
+ }
+}
+
+
+void top_collisionDetect()
+{
+ if (pos.y==-6) { //pattern is about to fall
+ bottom_collisionDetect();
+ if (bottom_collision_flag == 1) { //if can't fall
+ top_collision_flag = 1; // top collision
+ } else {
+ top_collision_flag = 0;
+ }
+ }
+}
+
+
+void fastmove_bottom_collisionDetect()
+{
+ int bot_boundary[6][6];
+ get_pattern(pos.type,pos.rotation);
+
+ // get the bottom boundary pattern
+ for (int i=0; i<=5; i++) {
+ for (int j=5; j>=0; j--) {
+ if (pattern_buffer[i][j]==1) {
+ bot_boundary[i][j]=1;
+ for(int k=j-1; k>=0; k--) {
+ bot_boundary[i][k] = 0;
+ }
+ break;
+ } else {
+ bot_boundary[i][j]=0;
+ }
+ }
+ }
+
+ //check bottom collision for 4 pixel distance away from bottom boundary
+ int x = pos.x;
+ int y = pos.y;
+ for(int i = x; i <= x+5; i++) { // (x,y) is the left top point of a 6*6 square
+ for(int j=y+5; j >= y; j--) {
+ if (j>=-1) {
+ if(bot_boundary[i-x][j-y]==1) {
+ if(j >= 42) { // pattern is about to fall on the bottom
+ fastmove_bottom_collision_flag = 1;
+ break;
+ } else if (lcd.getPixel(i,j+4)) {//check bottom collision for 4 pixel distance away from bottom boundary
+ fastmove_bottom_collision_flag = 1;
+ break;
+ } else {
+ fastmove_bottom_collision_flag = 0;
+ }
+ }
+ } else {
+ fastmove_bottom_collision_flag = 0;
+ }
+ }
+ if( fastmove_bottom_collision_flag == 1) {
+ break;
+ }
+ }
+}
+
+
+void game_isr()
+{
+ g_game_flag = 1;
+}
+
+
+void cancelLine()
+{
+ // int linePattern[30][2]; //the pixel setting for one line(30x2 square)
+ int count; // count setting pixels two by two
+ for(int j=0; j<=46; j+=2) {
+ for(int i=0; i<=29; i++) {
+ if (lcd.getPixel(i,j)==0||lcd.getPixel(i,j+1)==0) { // there is clear pixel
+ count=0;
+ break;
+ } else if (lcd.getPixel(i,j)&&lcd.getPixel(i,j+1)) {
+ count++;
+ }
+ }
+ if(count==30) { // one line is filled
+ count=0; // reset the variable count
+ lcd.drawRect(0,j,29,1,2); //clear the line
+ buzzer = 0.5;
+ score+=10; // add the score
+ //update the score
+ char scoreBuffer[14];
+ sprintf(scoreBuffer,"%d",score);
+ lcd.printString(scoreBuffer,42,3);
+ scan();
+ // move the patterns above the line down for 2 pixels' hight
+ for (int x=0; x<=29; x++) {
+ for (int y=j; y>=0; y--) {
+ if (buffer[x][y]) {
+ lcd.clearPixel(x,y);
+ lcd.setPixel(x,y+2);
+ }
+ }
+ }
+ }
+ }
+}
+
+
+void finishAnimation()
+{
+ for (int j=47; j>=0; j--) {
+ lcd.drawRect(0,j,29,1,1);
+ wait(0.05);
+ lcd.refresh();
+ }
+}
+
+
+bool buttonPressedInGame()
+{
+ bool exit_game;
+ if (g_button_flag) { // user press button finish game
+ g_button_flag=0;
+ scan(); // save the currnet gaming screen
+ game.detach(); // detach the game ticker
+ lcd.clear();
+ while(1) {
+ lcd.printString("Exit The Game?",1,1);
+ lcd.printString("YES",38,3);
+ lcd.printString("NO",38,4);
+ pointer(); // invoke pointer function
+ if (g_button_flag) {
+ g_button_flag=0;
+ if(pointer_position==0) { //"YES" -exit game
+ lcd.clear();
+ state=0; // back to main menu
+ pointer_position=0;
+ exit_game=true;
+ int stored_score=read_score_SD();
+ if (score>stored_score) { // if the score is higher than highest score, save it
+ save_score_SD(score);
+ }
+ score=0; //clear socre
+ red_led=1;
+ green_led=0;
+ break;
+ } else { //"NO" - continue the game
+ exit_game=false;
+ if(state==3) { // game level is easy
+ lcd.clear();
+ for(int i=0; i<=83; i++) { // back to the gaming screen before press button
+ for(int j=0; j<=47; j++) {
+ if(buffer[i][j]) {
+ lcd.setPixel(i,j);
+ }
+ }
+ }
+ game.attach(&game_isr,0.2); // easy game
+ exit_game=false;
+ break;
+ } else if(state==4) {// game level is hard
+ lcd.clear();
+ for(int i=0; i<=83; i++) {// back to the gaming screen before press button
+ for(int j=0; j<=47; j++) {
+ if(buffer[i][j]) {
+ lcd.setPixel(i,j);
+ }
+ }
+ }
+ game.attach(&game_isr,0.1);// hard game
+ break;
+ }
+ }
+ break;
+ }
+ }
+ }
+ if(exit_game) {
+ return true;
+ } else {
+ return false;
+ }
+}
+
+
+int read_score_SD()
+{
+ fp = fopen("/sd/topscore.txt", "r"); //open file
+ int stored_top_score;
+ fscanf(fp, "%d",&stored_top_score); // ensure data type matches - note address operator (&)
+ fclose(fp); // ensure you close the file after reading
+ return stored_top_score;
+}
+
+
+void save_score_SD(int score)
+{
+ fp = fopen("/sd/topscore.txt", "w");
+ fprintf(fp, "%d",score); // ensure data type matches
+ fclose(fp); // ensure you close the file after writing
+}
+#endif
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/Joystick.h Thu May 05 09:18:01 2016 +0000
@@ -0,0 +1,92 @@
+/**
+@file Joystick.h
+@brief Header file containing functions prototypes, defines and global variables for constructing joystick.
+@brief Example code of how to read a joystick with slightly changed for the game
+@https://www.sparkfun.com/products/9032
+@author Craig A. Evans
+@date 7 March 2015
+*/
+
+#ifndef JOYSTICK_H
+#define JOYSTICK_H
+
+#define DIRECTION_TOLERANCE 0.25
+
+/**
+Joystick vertical direction
+@brief Analog input for joystick to send vertical directions data
+*/
+AnalogIn yPot(PTB2);
+/**
+Joystick horizontal direction
+@brief Analog input for joystick to send horizontal direction data
+*/
+AnalogIn xPot(PTB3);
+
+//! create enumerated type (0,1,2,3 etc. for direction)
+//! could be extended for diagonals etc.
+enum DirectionName {
+ UP,
+ DOWN,
+ LEFT,
+ RIGHT,
+ CENTRE,
+ UNKNOWN
+};
+//! struct for Joystick
+typedef struct JoyStick Joystick;
+struct JoyStick {
+ double x; // current x value
+ double x0; // 'centred' x value
+ double y; // current y value
+ double y0; // 'centred' y value
+ int button; // button state (assume pull-down used, so 1 = pressed, 0 = unpressed)
+ DirectionName direction; // current direction
+};
+//! create struct variable
+Joystick joystick;
+/**
+Read default positions of the joystick to calibrate later readings
+*/
+void calibrateJoystick();
+/**
+Update the current position of joystick
+*/
+void updateJoystick();
+
+/////////////////////////////////////////////////
+/// Function Definitions
+/////////////////////////////////////////////////
+
+// read default positions of the joystick to calibrate later readings
+void calibrateJoystick()
+{
+ // must not move during calibration
+ joystick.x0 = xPot; // initial positions in the range 0.0 to 1.0 (0.5 if centred exactly)
+ joystick.y0 = yPot;
+}
+
+void updateJoystick()
+{
+ // read current joystick values relative to calibrated values (in range -0.5 to 0.5, 0.0 is centred)
+ joystick.x = xPot - joystick.x0;
+ joystick.y = yPot - joystick.y0;
+
+ // calculate direction depending on x,y values
+ // tolerance allows a little lee-way in case joystick not exactly in the stated direction
+ if ( fabs(joystick.y) < DIRECTION_TOLERANCE && fabs(joystick.x) < DIRECTION_TOLERANCE) {
+ joystick.direction = CENTRE;
+ } else if ( joystick.y < DIRECTION_TOLERANCE && fabs(joystick.x) < DIRECTION_TOLERANCE) {
+ joystick.direction = UP;
+ } else if ( joystick.y > DIRECTION_TOLERANCE && fabs(joystick.x) < DIRECTION_TOLERANCE) {
+ joystick.direction = DOWN;
+ } else if ( joystick.x < DIRECTION_TOLERANCE && fabs(joystick.y) < DIRECTION_TOLERANCE) {
+ joystick.direction = RIGHT;
+ } else if ( joystick.x > DIRECTION_TOLERANCE && fabs(joystick.y) < DIRECTION_TOLERANCE) {
+ joystick.direction = LEFT;
+ } else {
+ joystick.direction = UNKNOWN;
+ }
+}
+
+#endif
\ No newline at end of file
--- a/Patterns.h Sun May 01 23:09:33 2016 +0000
+++ b/Patterns.h Thu May 05 09:18:01 2016 +0000
@@ -1,9 +1,27 @@
+/**
+@file Patterns.h
+@brief Header file containing member functions and variables
+@brief Header file patterns pixel settings and funtion to get specific pattern pixel setting
+@brief Revision 1.0.
+@author JIANWEI CHEN
+@date May 2016
+*/
+
#ifndef PATTERNS_H
#define PATTERNS_H
+
+
class Patterns
{
public:
-
+ /** Get pattern pixel setting
+ *
+ * @param type - pattern type (0~6)
+ * @param rotation - pattern rotation (0~3)
+ * @param y - pattern y co-ordinate (0~6)
+ * @param x - pattern x co-ordinate (0~6)
+ * @note (x,y) is the top left corner pixel of a 6x6 square
+ */
int getPatterns(int type, int rotation, int y, int x);
private:
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/SDFileSystem.lib Thu May 05 09:18:01 2016 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/SDFileSystem/#7b35d1709458
--- a/main.cpp Sun May 01 23:09:33 2016 +0000
+++ b/main.cpp Thu May 05 09:18:01 2016 +0000
@@ -1,577 +1,71 @@
#include "mbed.h"
#include "Patterns.h"
#include "N5110.h"
-
-#define DIRECTION_TOLERANCE 0.05
-
-//VCC, SCE, RST, D/C, MOSI,SCLK, LED
-N5110 lcd(PTE26,PTA0,PTC4,PTD0,PTD2,PTD1,PTC3);
-AnalogIn yPot(PTB2);
-AnalogIn xPot(PTB3);
-DigitalIn button(PTB11);
-Patterns patterns;
-
-Ticker game;
-void game_isr();
-volatile int g_game_flag = 0;
-
-void drawPattern(int type,int rotation,int x,int y,int fill); // draw pattern at (x,y), fill = 0 white, fill = 1 black
-
-void left_collisionDetect();
-int left_collision_flag = 0;
-
-void right_collisionDetect();
-int right_collision_flag = 0;
-
-void bottom_collisionDetect();
-int bottom_collision_flag = 0;
-
-void top_collisionDetect();
-int top_collision_flag = 0;
-
-void rotation_collisionDetect();
-int rotation_collision_flag = 0;
-
-void fastmove_bottom_collisionDetect();
-int fastmove_bottom_collision_flag = 0;
-
-struct Position {
- float x;
- float y;
- int type;
- int rotation;
-};
-typedef struct Position position;
-
-position pos;
-
-void init_game();
-int typeArray[100];
-int rotationArray[100];
-
-int pattern_buffer[6][6];
-void get_pattern(int type, int rotatin);
-
-void scan();
-int buffer[84][48];
-
-// create enumerated type (0,1,2,3 etc. for direction)
-// could be extended for diagonals etc.
-enum DirectionName {
- UP,
- DOWN,
- LEFT,
- RIGHT,
- CENTRE,
- UNKNOWN
-};
-// struct for Joystick
-typedef struct JoyStick Joystick;
-struct JoyStick {
- double x; // current x value
- double x0; // 'centred' x value
- double y; // current y value
- double y0; // 'centred' y value
- int button; // button state (assume pull-down used, so 1 = pressed, 0 = unpressed)
- DirectionName direction; // current direction
-};
-// create struct variable
-Joystick joystick;
-void calibrateJoystick();
-void updateJoystick();
-
-void cancelLine();// if one line is filled, cancel it and add the score
-int score=0;
-
-void finishAnimation();
-
-int xOld;
-int typeCount = 0;
-int nextTypeCount;
+#include "SDFileSystem.h"
+#include "Joystick.h"
+#include "Game.h"
+#include "main.h"
int main()
{
- wait(2.0); // short delay for power to settle
- lcd.init();
- lcd.normalMode(); // normal colour mode
- lcd.setBrightness(1.0); // put LED backlight on 100%
- init_game();
- game.attach(&game_isr,0.2);
- lcd.refresh();
- calibrateJoystick();
-
- while (1) {
+ init();
+ while(1) {
+ if(g_menuTimer_flag) {
+ g_menuTimer_flag=0;
- if(g_game_flag==1) {
- g_game_flag = 0;
- pos.type = typeArray[typeCount];
- nextTypeCount=typeCount+1;
- if (nextTypeCount>99) {
- nextTypeCount=0;
- }
- drawPattern(typeArray[nextTypeCount],0,55,41,1);// draw next pattern
- if (pos.y >= -5) { // clear previous pattern
- drawPattern(pos.type,pos.rotation,xOld,pos.y-1,0);
- }
- updateJoystick();
- top_collisionDetect();
- if (top_collision_flag == 1) {
- finishAnimation();
+ if (g_button_flag) {// if button pressed, go to next menu according current state and pointer position input
+ g_button_flag=0;
+ state=fsm[state].nextState[pointer_position];
lcd.clear();
- char scoreBuffer[14];
- sprintf(scoreBuffer,"%d",score);
- lcd.printString("SCORE IS: ",10,2);
- lcd.printString(scoreBuffer,35,3);
- lcd.refresh();
- break;
- }
- switch(joystick.direction) {
- case UP:
- rotation_collisionDetect();
- if(rotation_collision_flag == 0) {
- pos.rotation++;
- if (pos.rotation>3) {
- pos.rotation=0;
- }
- drawPattern(pos.type,pos.rotation,pos.x,pos.y,1);
- } else {// if collision
- drawPattern(pos.type,pos.rotation,pos.x,pos.y,1);
- }
- break;
- case DOWN:
- fastmove_bottom_collisionDetect();
- if (fastmove_bottom_collision_flag == 0) {
- pos.y +=4;
- drawPattern(pos.type,pos.rotation,pos.x,pos.y,1);
- } else {
- drawPattern(pos.type,pos.rotation,pos.x,pos.y,1);
- }
- break;
- case RIGHT:
- right_collisionDetect();
- if( right_collision_flag == 0) {
- pos.x +=2;
- drawPattern(pos.type,pos.rotation,pos.x,pos.y,1);
- } else {
- drawPattern(pos.type,pos.rotation,pos.x,pos.y,1);
- right_collision_flag = 0;
- }
- break;
- case LEFT:
- left_collisionDetect();
- if( left_collision_flag == 0) {
- pos.x -=2;
- drawPattern(pos.type,pos.rotation,pos.x,pos.y,1);
- } else {
- drawPattern(pos.type,pos.rotation,pos.x,pos.y,1);
- left_collision_flag = 0;
- }
-
- break;
- case CENTRE:
- drawPattern(pos.type,pos.rotation,pos.x,pos.y,1);
- break;
- case UNKNOWN:
- drawPattern(pos.type,pos.rotation,pos.x,pos.y,1);
- break;
- }
-
- xOld = pos.x;
- bottom_collisionDetect();
- if (bottom_collision_flag == 0) {
- pos.y++;
- } else {
- drawPattern(pos.type,pos.rotation,pos.x,pos.y,1);// fix pattern
- cancelLine();
- pos.x = 10;
- pos.y = -6;
- pos.rotation=0;
- drawPattern(typeArray[nextTypeCount],pos.rotation,55,41,0);// clear the old next pattern
- typeCount ++;
- if (typeCount >99) {
- typeCount = 0;
- }
}
- }
- lcd.refresh();
- }
-
-}
-
-void init_game()
-{
- pos.x = 10;
- pos.y = -6;
- pos.rotation=0;
- for(int i=0; i<=99; i++) {
- typeArray[i] = rand()%7;
- rotationArray[i] = rand()%5;
- }
- lcd.drawLine(30,0,30,47,1);
- lcd.printString("Level:",42,0);
- lcd.printString("easy",42,1);
- lcd.printString("Score:",42,2);
- lcd.printString("0",42,3);
- lcd.printString("Next:",42,4);
-
-}
-
-void get_pattern(int type, int rotation)
-{
- for(int i=0; i<=5; i++) {
- for(int j=0; j<=5; j++) {
- pattern_buffer[i][j] = patterns.getPatterns(type,rotation,j,i); // return pattern[type][rotation][y][x];
- }
- }
-}
-
-void scan()
-{
- for (int i=0; i<=83; i++) {
- for (int j=0; j<=47; j++) {
- if(lcd.getPixel(i,j)) {
- buffer[i][j] = 1;
- } else {
- buffer[i][j] = 0;
- }
- }
- }
-}
-
-
-void drawPattern(int type,int rotation,int x,int y,int fill)
-{
- get_pattern(type,rotation);
- for(int i=x; i <= x+5; i++) { // (x,y) is the left top point of a 6*6 square
- for(int j=y; j <= y+5; j++) {
- if (j>=0) {
- if(pattern_buffer[i-x][j-y]==1) {
- if (fill==0) {
- if (j<=47 && i>=0) {
- lcd.clearPixel(i,j);
- }
- } else if (fill==1) {
- if (j<=47 && i>=0) {
- lcd.setPixel(i,j);
- }
- }
- }
- }
- }
- }
-}
-
-void left_collisionDetect()
-{
- int left_boundary[6][6];
- get_pattern(pos.type,pos.rotation);
-
- // get the left boundary pattern
- for (int j=0; j<=5; j++) { //
- for (int i=0; i<=5; i++) {
- if (pattern_buffer[i][j]==1) {
- left_boundary[i][j]=1;
- for(int k=i+1; k<=5; k++) {
- left_boundary[k][j] = 0;
- }
- break;
- } else {
- left_boundary[i][j]=0;
- }
- }
- }
-
- //check left collision
- int x = pos.x;
- int y = pos.y;
- if (x<0) {
- left_collision_flag = 1;
- } else {
- for(int i=x; i <= x+5; i++) { // (x,y) is the left top point of a 6*6 square
- for(int j=y; j <= y+5; j++) {
- if(left_boundary[i-x][j-y]==1) {
- if(i == 0) {
- left_collision_flag = 1;
- break;
- } else if (lcd.getPixel(i-1,j)) {
- left_collision_flag = 1;
- break;
- } else {
- left_collision_flag = 0;
- }
- }
- }
- if (left_collision_flag == 1) {
- break;
- }
- }
- }
-}
-
-
-void right_collisionDetect()
-{
- int right_boundary[6][6];
- get_pattern(pos.type,pos.rotation);
- // get the left boundary pattern
- for (int j=0; j<=5; j++) {
- for (int i=5; i>=0; i--) {
- if (pattern_buffer[i][j]==1) {
- right_boundary[i][j]=1;
- for(int k=i-1; k>=0; k--) {
- right_boundary[k][j] = 0;
- }
- break;
- } else {
- right_boundary[i][j]=0;
+ switch(state) {
+ case 0: // main menu
+ pointer();
+ red_led=0;
+ green_led=0;
+ lcd.printString("Tetis Game",10,1);
+ lcd.printString("START",25,3);
+ lcd.printString("SCORE",25,4);
+ lcd.refresh();
+ break;
+ case 1: // game level choosing menu
+ pointer();
+ red_led=0;
+ green_led=0;
+ lcd.printString("Game Level",10,1);
+ lcd.printString("EASY",25,3);
+ lcd.printString("HARD",25,4);
+ lcd.printString("Back",60,5);
+ lcd.refresh();
+ break;
+ case 2: // highest score menu
+ red_led=0;
+ green_led=0;
+ lcd.printString("Highest Score:",1,1);
+ int top_score;
+ top_score=read_score_SD();
+ char score[14];
+ sprintf(score,"%d",top_score);
+ lcd.printString(score,30,3);
+ lcd.printString("Press Button",0,4);
+ lcd.printString("To Exit",0,5);
+ lcd.refresh();
+ break;
+ case 3: // easy game menu
+ init_game();
+ game.attach(&game_isr,0.2);
+ lcd.printString("easy",42,1);
+ tetis_game();
+ break;
+ case 4: // hard game menu
+ init_game();
+ game.attach(&game_isr,0.1);
+ lcd.printString("hard",42,1);
+ tetis_game();
+ break;
}
}
- }
-
- //check left collision
- int x = pos.x;
- int y = pos.y;
- for(int i = x; i <= x+5; i++) { // (x,y) is the left top point of a 6*6 square
- for(int j=y; j <= y+5; j++) {
- if(right_boundary[i-x][j-y]==1) {
- if(j>=0) {
- if(i >= 29) {
- right_collision_flag = 1;
- break;
- } else if (lcd.getPixel(i+1,j)) {
- right_collision_flag = 1;
- break;
- } else {
- right_collision_flag = 0;
- }
- }
- }
- }
- if (right_collision_flag == 1) {
- break;
- }
-
- }
-}
-
-void bottom_collisionDetect()
-{
- int bot_boundary[6][6];
- get_pattern(pos.type,pos.rotation);
- // get the left boundary pattern
- for (int i=0; i<=5; i++) {
- for (int j=5; j>=0; j--) {
- if (pattern_buffer[i][j]==1) {
- bot_boundary[i][j]=1;
- for(int k=j-1; k>=0; k--) {
- bot_boundary[i][k] = 0;
- }
- break;
- } else {
- bot_boundary[i][j]=0;
- }
- }
- }
-
- //check left collision
- int x = pos.x;
- int y = pos.y;
- for(int i = x; i <= x+5; i++) { // (x,y) is the left top point of a 6*6 square
- for(int j=y+5; j >= y; j--) {
- if (j>=-1) {
- if(bot_boundary[i-x][j-y]==1) {
- if(j >= 47) {
- bottom_collision_flag = 1;
- break;
- } else if (lcd.getPixel(i,j+1)) {
- bottom_collision_flag = 1;
- break;
- } else {
- bottom_collision_flag = 0;
- }
- }
- } else {
- bottom_collision_flag = 0;
- }
- }
- if( bottom_collision_flag == 1) {
- break;
- }
- }
-}
-
-void rotation_collisionDetect()
-{
- int rotation = pos.rotation+1;
- if (rotation>3) {
- rotation=0;
- }
- get_pattern(pos.type,rotation);
-
- //check
- int x = pos.x;
- int y = pos.y;
- for(int i = x; i <= x+5; i++) { // (x,y) is the left top point of a 6*6 square
- for(int j=y; j <= y+5; j++) {
- if(pattern_buffer[i-x][j-y]==1) {
- if(i<0) {
- rotation_collision_flag = 1;
- } else if(lcd.getPixel(i,j)) {
- rotation_collision_flag = 1;
- break;
- } else {
- rotation_collision_flag = 0;
- }
- }
- }
- if (rotation_collision_flag == 1) {
- break;
- }
- }
-}
-
-void top_collisionDetect()
-{
- if (pos.y==-6) {
- bottom_collisionDetect();
- if (bottom_collision_flag == 1) {
- top_collision_flag = 1;
- } else {
- top_collision_flag = 0;
- }
+ sleep();
}
}
-
-void fastmove_bottom_collisionDetect()
-{
- int bot_boundary[6][6];
- get_pattern(pos.type,pos.rotation);
- // get the left boundary pattern
- for (int i=0; i<=5; i++) {
- for (int j=5; j>=0; j--) {
- if (pattern_buffer[i][j]==1) {
- bot_boundary[i][j]=1;
- for(int k=j-1; k>=0; k--) {
- bot_boundary[i][k] = 0;
- }
- break;
- } else {
- bot_boundary[i][j]=0;
- }
- }
- }
-
- //check left collision
- int x = pos.x;
- int y = pos.y;
- for(int i = x; i <= x+5; i++) { // (x,y) is the left top point of a 6*6 square
- for(int j=y+5; j >= y; j--) {
- if (j>=-1) {
- if(bot_boundary[i-x][j-y]==1) {
- if(j >= 42) {
- fastmove_bottom_collision_flag = 1;
- break;
- } else if (lcd.getPixel(i,j+4)) {
- fastmove_bottom_collision_flag = 1;
- break;
- } else {
- fastmove_bottom_collision_flag = 0;
- }
- }
- } else {
- fastmove_bottom_collision_flag = 0;
- }
- }
- if( fastmove_bottom_collision_flag == 1) {
- break;
- }
- }
-}
-
-void game_isr()
-{
- g_game_flag = 1;
-}
-
-// read default positions of the joystick to calibrate later readings
-void calibrateJoystick()
-{
- button.mode(PullDown);
- // must not move during calibration
- joystick.x0 = xPot; // initial positions in the range 0.0 to 1.0 (0.5 if centred exactly)
- joystick.y0 = yPot;
-}
-
-void updateJoystick()
-{
- // read current joystick values relative to calibrated values (in range -0.5 to 0.5, 0.0 is centred)
- joystick.x = xPot - joystick.x0;
- joystick.y = yPot - joystick.y0;
- // read button state
- joystick.button = button;
-
- // calculate direction depending on x,y values
- // tolerance allows a little lee-way in case joystick not exactly in the stated direction
- if ( fabs(joystick.y) < DIRECTION_TOLERANCE && fabs(joystick.x) < DIRECTION_TOLERANCE) {
- joystick.direction = CENTRE;
- } else if ( joystick.y < DIRECTION_TOLERANCE && fabs(joystick.x) < DIRECTION_TOLERANCE) {
- joystick.direction = UP;
- } else if ( joystick.y > DIRECTION_TOLERANCE && fabs(joystick.x) < DIRECTION_TOLERANCE) {
- joystick.direction = DOWN;
- } else if ( joystick.x < DIRECTION_TOLERANCE && fabs(joystick.y) < DIRECTION_TOLERANCE) {
- joystick.direction = RIGHT;
- } else if ( joystick.x > DIRECTION_TOLERANCE && fabs(joystick.y) < DIRECTION_TOLERANCE) {
- joystick.direction = LEFT;
- } else {
- joystick.direction = UNKNOWN;
- }
-
-}
-
-void cancelLine()
-{
- // int linePattern[30][2]; //the pixel setting for one line(30x2 square)
- int count;
- for(int j=0; j<=46; j+=2) {
- for(int i=0; i<=29; i++) {
- if (lcd.getPixel(i,j)==0||lcd.getPixel(i,j+1)==0) {
- count=0;
- break;
- } else if (lcd.getPixel(i,j)&&lcd.getPixel(i,j+1)) {
- count++;
- }
- }
- if(count==30) { // one line is filled
- count=0;
- lcd.drawRect(0,j,29,1,2); //clear the line
- score+=10; // add the score
- //print the score
- char scoreBuffer[14];
- sprintf(scoreBuffer,"%d",score);
- lcd.printString(scoreBuffer,42,3);
- scan();
- // move the patterns upon the line down for 2 pixels' hight
- for (int x=0; x<=29; x++) {
- for (int y=j; y>=0; y--) {
- if (buffer[x][y]) {
- lcd.clearPixel(x,y);
- lcd.setPixel(x,y+2);
- }
- }
- }
- }
- }
-}
-
-void finishAnimation()
-{
- for (int j=47; j>=0; j--) {
- lcd.drawRect(0,j,29,1,1);
- wait(0.05);
- lcd.refresh();
- }
-}
-
-
-
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.h Thu May 05 09:18:01 2016 +0000
@@ -0,0 +1,186 @@
+/**
+@file main.h
+@brief Header file containing functions prototypes, defines and global variables for menu and pointer
+@brief Menu is construct using finit state mechine.
+@brief The input for finit state mechine is the positer position.
+@brief Revision 1.0.
+@author JIANWEI CHEN
+@date May 2016
+*/
+#ifndef MAIN_H
+#define MAIN_H
+
+#include "mbed.h"
+// VCC, SCE, RST, D/C, MOSI,SCLK, LED
+N5110 lcd(PTE26,PTA0,PTC4,PTD0,PTD2,PTD1,PTC3);
+// MOSI, MISO, SCK, CS
+SDFileSystem sd(PTE3, PTE1, PTE2, PTE4, "sd");
+
+FILE *fp; /*!< File pointer */
+
+DigitalOut red_led(PTA1);
+DigitalOut green_led(PTC2);
+InterruptIn button(PTB18);
+PwmOut buzzer (PTA2);
+
+////////////////////////////////////////////////////////
+// Variables
+////////////////////////////////////////////////////////
+/**
+Create ticker object for menu
+@brief ticker to control the speed of updating the menu
+*/
+Ticker menuTimer;
+
+volatile int g_menuTimer_flag = 0; /*!< Flag for menu ticker */
+volatile int g_button_flag = 0; /*!< Flag for button interrupt */
+
+/**State of menu
+@brief Variable control the state of menu
+@note state 0 - main menu
+@note state 1 - game level choosing menu
+@note state 2 - show highest score menu
+@note state 3 - game with easy level
+@note state 4 - game with hard level
+*/
+int state=0;
+
+int pointer_position=0;/*!< Variable control the position of pointer */
+
+/**struct for state
+*/
+struct State {
+ int nextState[3]; // array of next states
+};
+typedef const struct State STyp;
+
+STyp fsm[5] = {
+ {1,2,0}, // states chosen according to inputs(pointer position)
+ {3,4,0},
+ {0,0,0},
+ {0,0,0},
+ {0,0,0}
+};
+
+//////////////////////////////////////////////////////////////////
+// Functions
+//////////////////////////////////////////////////////////////////
+
+/**
+Menu isr function
+*/
+void menuTimer_isr();
+
+/**
+Initialise the program and lcd, mbed initial settings
+*/
+void init();
+
+/**
+Button interrupt isr function
+*/
+void button_isr();
+
+/**Drawing the pointer at (x,y)
+@brief Drawing the pointer image at (x,y) according to inputs
+@param x - x co-ordinate of lcd
+@param y - y co-ordinate of lcd
+@param fill - fill = 0 white, fill = 1 black
+*/
+void pointer_image(int x,int y,int fill);//0-white 1-black
+
+/** Move the pointer
+@brief Function to control the pointer according to joystick
+*/
+void pointer();
+
+
+/////////////////////////////////////////////////
+/// Function Definitions
+/////////////////////////////////////////////////
+void menuTimer_isr()
+{
+ g_menuTimer_flag = 1;
+}
+
+
+void button_isr()
+{
+ g_button_flag=1;
+}
+
+
+void pointer()
+{
+ updateJoystick(); // get joystick direction
+ if (joystick.direction==UP) {
+ if(pointer_position==0) { // pointer at the top
+ pointer_position=0;
+ } else {
+ pointer_position--;
+ }
+ } else if(joystick.direction==DOWN) {
+ if(pointer_position==1&&(state!=1)) { //only game level choosing menu have 3 pointer positions
+ pointer_position=1;
+ } else if (pointer_position==2&&(state==1)) {
+ pointer_position=2;
+ } else {
+ pointer_position++;
+ }
+ }
+
+ if(pointer_position==0) {
+ pointer_image(10,27,1); // draw pointer
+ pointer_image(10,35,0); // clear pointer at other positions
+ pointer_image(10,43,0);
+ } else if(pointer_position==1) {
+ pointer_image(10,27,0);
+ pointer_image(10,35,1);
+ pointer_image(10,43,0);
+ } else if(pointer_position==2) {
+ pointer_image(10,35,0);
+ pointer_image(10,43,1);
+ }
+
+}
+
+
+void pointer_image(int x,int y,int fill)
+{
+ if(fill==0) {// draw white pointer
+ lcd.drawLine(x,y,x-4,y+2,0);
+ lcd.drawLine(x,y,x-4,y-2,0);
+ } else { // draw black pointer
+ lcd.drawLine(x,y,x-4,y-2,1);
+ lcd.drawLine(x,y,x-4,y+2,1);
+ }
+}
+
+
+void init(){
+ wait(2.0); // short delay for power to settle
+ // initialise sd card
+ fp = fopen("/sd/topscore.txt", "r");
+ fclose(fp); // ensure you close the file after reading
+ lcd.init(); // initialise lcd
+ lcd.normalMode(); // normal colour mode
+ lcd.setBrightness(1.0); // put LED backlight on 100%
+
+ lcd.printString("Calibrating",0,0);
+ lcd.printString("Joystick........",0,1);
+ lcd.printString("PLEASE DO NOT",0,3);
+ lcd.printString("MOVE JOYSTICK.....",0,4);
+ lcd.refresh();
+ calibrateJoystick();
+ wait(4.0);
+
+ lcd.clear();
+ lcd.refresh();
+ button.mode(PullDown);
+ red_led=0;
+ green_led=0;
+ button.fall(&button_isr);
+ menuTimer.attach(&menuTimer_isr,0.1); // attach menu ticker
+ buzzer.period(1.0/4000.0); // set buzzer period to 4 kKz
+}
+#endif
\ No newline at end of file
--- a/mbed.bld Sun May 01 23:09:33 2016 +0000 +++ b/mbed.bld Thu May 05 09:18:01 2016 +0000 @@ -1,1 +1,1 @@ -http://mbed.org/users/mbed_official/code/mbed/builds/87f2f5183dfb \ No newline at end of file +http://mbed.org/users/mbed_official/code/mbed/builds/aae6fcc7d9bb \ No newline at end of file