main.cpp

00001 #include "mbed.h"
00002 #include "TextLCD.h"
00003 #include "TSISensor.h"
00004 
00005 TextLCD lcd(PTD1,PTD3,PTD2,PTD0,PTD5,PTA13); // rs, e, d4-d7
00006 // number of seconds to wait between each frame movement
00007 float frameTime = 1;
00008 // number of frames since speed increase
00009 int steps = 0;
00010 // number of frames in total
00011 int score = 0;
00012 // size of course
00013 int courseSize = 48;
00014 
00015 int main() 
00016 {
00017     // set up course
00018     char course[courseSize][2];
00019     
00020     // blank course to start with
00021     for(int i = 0; i < courseSize; i++) {
00022         course[i][0] = ' ';
00023         course[i][1] = ' ';
00024     }
00025     
00026     // obstacles
00027     course[3][0] = '0';
00028     course[6][1] = '0';
00029     course[9][1] = '0';
00030     course[12][0] = '0';
00031     course[15][1] = '0';
00032     course[16][1] = '0';
00033     course[19][0] = '0';
00034     course[21][1] = '0';
00035     course[23][0] = '0';
00036     course[24][0] = '0';
00037     course[29][1] = '0';
00038     course[33][0] = '0';
00039     course[35][0] = '0';
00040     course[37][0] = '0';
00041     course[40][1] = '0';
00042     course[43][0] = '0';
00043     course[46][1] = '0';
00044     
00045     // set up LED output
00046     PwmOut led(LED_GREEN);
00047     // set up touch sensor to control game
00048     TSISensor tsi;
00049     
00050     int gameover = 0;
00051     
00052     // game loop
00053     while(1) {    
00054         
00055         // print current course on lcd
00056         for(int i = 15; i >= 0; i--) {
00057             lcd.locate(i,0);
00058             lcd.printf("%c",course[i][0]);
00059             lcd.locate(i,1);
00060             lcd.printf("%c",course[i][1]);
00061         }       
00062         
00063         
00064         // create next frame of course
00065         // course loops round infinitely
00066         
00067         // these are rows that will be pushed off top of screen
00068         // save them so they can be put at bottom once finished
00069         char toprow1 =  course[courseSize-1][0];
00070         char toprow2 =  course[courseSize-1][1];
00071         
00072         // shift each row up 1
00073         for(int i = courseSize-1; i >= 0; i--) {
00074         
00075             course[i][0] = course[i-1][0];
00076             course[i][1] = course[i-1][1];
00077         
00078         }
00079         
00080         // set bottom rows as the top rows that have been pushed off
00081         course[0][0] = toprow1;
00082         course[0][1] = toprow2;
00083         
00084         // game control
00085         // what to do if controller is on right
00086         
00087         if (tsi.readPercentage() >= 0.5) { // if on one side of touchpad
00088             // go to column
00089             lcd.locate(15,1);
00090             // print game character
00091             lcd.printf("%c",'<');
00092             
00093             // check whether there is collision
00094             if(course[15][1] == '0')
00095             {
00096                 // clear screen
00097                 lcd.cls();
00098                 // let user know game is over
00099                 lcd.printf("Game Over!!\n Score %d", score);
00100                 gameover = 1;
00101             }          
00102         }   
00103     
00104         // when controller is on left
00105         else {
00106             // go to column
00107             lcd.locate(15,0);
00108             // print game character
00109             lcd.printf("%c",'<');
00110             
00111             // check whether there is collision
00112             if(course[15][0] == '0')
00113             {
00114                 // clear screen
00115                 lcd.cls();
00116                 // let user know game is over
00117                 lcd.printf("Game Over!!\n Score %d", score);
00118                 gameover = 1;
00119             }
00120         }
00121     
00122     // delay between each frame    
00123     wait(frameTime);
00124     // add to steps 
00125     steps++;     
00126     // add to score
00127     score++;
00128     // check whether enough steps completed to speed game up
00129     if(steps > 5) {   
00130         frameTime -= 0.05;
00131         // reset number of steps
00132         steps = 0;
00133     }
00134     
00135     if(gameover == 1)
00136     {
00137     wait(10);
00138     gameover = 0;
00139     score = 0;
00140     frameTime = 1;
00141     }
00142   }
00143     
00144 }