LI Saiwen / Snake

Snake game snake library

Snake.cpp@5:449858a54971, 2017-05-05 (annotated)

Committer:
Nefos
Date:
Fri May 05 14:51:27 2017 +0000
Revision:
5:449858a54971
Parent:
4:c74ec3f409f9
Child:
6:cc8d2088f490
needs comments, chekTailCollision is broken;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Nefos 0:2eb4d7e86e2f 1 #include "Snake.h"
Nefos 0:2eb4d7e86e2f 2
Nefos 0:2eb4d7e86e2f 3
Nefos 2:5e04e34a3b66 4 #define WIDTH 84
Nefos 2:5e04e34a3b66 5 #define HEIGHT 48
Nefos 2:5e04e34a3b66 6 #define CEILING 8
Nefos 2:5e04e34a3b66 7 #define FLOOR 48
Nefos 2:5e04e34a3b66 8
Nefos 0:2eb4d7e86e2f 9 snakePart snek;
Nefos 0:2eb4d7e86e2f 10
Nefos 1:93a4cb86f100 11
Nefos 1:93a4cb86f100 12
Nefos 0:2eb4d7e86e2f 13 Snake::Snake()
Nefos 0:2eb4d7e86e2f 14 {
Nefos 0:2eb4d7e86e2f 15
Nefos 0:2eb4d7e86e2f 16 }
Nefos 0:2eb4d7e86e2f 17 Snake::~Snake()
Nefos 0:2eb4d7e86e2f 18 {
Nefos 0:2eb4d7e86e2f 19
Nefos 0:2eb4d7e86e2f 20 }
Nefos 0:2eb4d7e86e2f 21
Nefos 3:b24ef00836c5 22 void Snake::init(int x, int y, int lenght, int _live){
Nefos 0:2eb4d7e86e2f 23
Nefos 0:2eb4d7e86e2f 24
Nefos 1:93a4cb86f100 25
Nefos 0:2eb4d7e86e2f 26 //initalizing the starting variables
Nefos 3:b24ef00836c5 27 //snek._x[0]=x;
Nefos 3:b24ef00836c5 28 //snek._y[0]=y;
Nefos 3:b24ef00836c5 29 startx=x;
Nefos 3:b24ef00836c5 30 starty=y;
Nefos 3:b24ef00836c5 31 startl=lenght;
Nefos 3:b24ef00836c5 32 live=_live;
Nefos 4:c74ec3f409f9 33 /*if (live==0){
Nefos 3:b24ef00836c5 34 live=3;
Nefos 4:c74ec3f409f9 35 }*/
Nefos 0:2eb4d7e86e2f 36 _length = lenght;
Nefos 3:b24ef00836c5 37
Nefos 3:b24ef00836c5 38 _food.init();
Nefos 0:2eb4d7e86e2f 39 for (int i=0;_length>i;i++)
Nefos 0:2eb4d7e86e2f 40 {
Nefos 0:2eb4d7e86e2f 41 snek._x[i]=x+i;
Nefos 0:2eb4d7e86e2f 42 snek._y[i]=y;
Nefos 0:2eb4d7e86e2f 43 snek._dir[i]=1;
Nefos 0:2eb4d7e86e2f 44 }
Nefos 1:93a4cb86f100 45 snek._x[_length]=x+_length;
Nefos 1:93a4cb86f100 46 snek._y[_length]=y;
Nefos 1:93a4cb86f100 47
Nefos 1:93a4cb86f100 48 /* snek._y[0]=y;
Nefos 1:93a4cb86f100 49 snek._y[1]=y+1;
Nefos 1:93a4cb86f100 50 snek._y[2]=y+2;
Nefos 1:93a4cb86f100 51 snek._y[3]=y+2;
Nefos 1:93a4cb86f100 52 snek._y[4]=y+3;
Nefos 1:93a4cb86f100 53 snek._y[5]=y+3;
Nefos 1:93a4cb86f100 54 snek._y[6]=y+4;*/
Nefos 0:2eb4d7e86e2f 55 _direction = 1;//1 is East, 2 is South, 3 is West, 4 is North
Nefos 0:2eb4d7e86e2f 56
Nefos 0:2eb4d7e86e2f 57
Nefos 3:b24ef00836c5 58
Nefos 1:93a4cb86f100 59 printf("xog is %d ", snek._x[_length-1]);
Nefos 1:93a4cb86f100 60 //printf("initalized");
Nefos 0:2eb4d7e86e2f 61 }
Nefos 0:2eb4d7e86e2f 62
Nefos 0:2eb4d7e86e2f 63 void Snake::draw(N5110 &lcd){
Nefos 3:b24ef00836c5 64 checkWallCollision(lcd);
Nefos 5:449858a54971 65 checkTailCollision(lcd);
Nefos 3:b24ef00836c5 66 if (live!=0){
Nefos 3:b24ef00836c5 67 lcd.clear();
Nefos 4:c74ec3f409f9 68 waitCount=((float)_length/3)+5;
Nefos 4:c74ec3f409f9 69 waitTime=(1/waitCount);
Nefos 4:c74ec3f409f9 70 wait(waitTime);
Nefos 3:b24ef00836c5 71 char buffer1[14];
Nefos 3:b24ef00836c5 72 char buffer2[14];
Nefos 3:b24ef00836c5 73 sprintf(buffer1,"%2d",live);
Nefos 3:b24ef00836c5 74 sprintf(buffer2,"%2d",_length);
Nefos 3:b24ef00836c5 75 lcd.printString(buffer1,25,0);
Nefos 3:b24ef00836c5 76 lcd.printString(buffer2,70,0);
Nefos 3:b24ef00836c5 77 _food.draw(lcd);
Nefos 3:b24ef00836c5 78 lcd.drawRect(0,8,84,48-8,FILL_TRANSPARENT);
Nefos 3:b24ef00836c5 79 lcd.printString("Life:",0,0);
Nefos 3:b24ef00836c5 80 lcd.printString("Pts:",40,0);
Nefos 3:b24ef00836c5 81
Nefos 3:b24ef00836c5 82 for ( int i=0; _length>i;i++){
Nefos 3:b24ef00836c5 83 if (snek._x!=0)
Nefos 3:b24ef00836c5 84 {
Nefos 3:b24ef00836c5 85 if (snek._y!=0)
Nefos 3:b24ef00836c5 86 {
Nefos 3:b24ef00836c5 87 lcd.setPixel(snek._x[i],snek._y[i]);
Nefos 3:b24ef00836c5 88 }
Nefos 3:b24ef00836c5 89 }
Nefos 3:b24ef00836c5 90
Nefos 3:b24ef00836c5 91
Nefos 3:b24ef00836c5 92
Nefos 3:b24ef00836c5 93 lcd.refresh();
Nefos 3:b24ef00836c5 94
Nefos 3:b24ef00836c5 95 //printf("drawn");
Nefos 3:b24ef00836c5 96 }
Nefos 3:b24ef00836c5 97 }//live loop
Nefos 4:c74ec3f409f9 98
Nefos 0:2eb4d7e86e2f 99 }
Nefos 0:2eb4d7e86e2f 100 void Snake::update(Gamepad &pad){
Nefos 2:5e04e34a3b66 101
Nefos 3:b24ef00836c5 102 if (live!=0){
Nefos 0:2eb4d7e86e2f 103
Nefos 3:b24ef00836c5 104 d=pad.get_direction();
Nefos 3:b24ef00836c5 105 startx=snek._x[0];
Nefos 3:b24ef00836c5 106
Nefos 3:b24ef00836c5 107 printf("x+1 is %d", snek._x[_length+1]);
Nefos 3:b24ef00836c5 108 printf("y+1 is %d", snek._y[_length+1]);
Nefos 3:b24ef00836c5 109 printf("dir+1 is %d", snek._dir[_length+1]);
Nefos 3:b24ef00836c5 110 printf("length is %d", _length);
Nefos 3:b24ef00836c5 111
Nefos 3:b24ef00836c5 112 /*if ( pad.check_event(Gamepad::A_PRESSED) == true)//testing the add_point manually
Nefos 0:2eb4d7e86e2f 113 {
Nefos 3:b24ef00836c5 114 snek._x[_length+1]=snek._x[_length];//-1
Nefos 3:b24ef00836c5 115 snek._y[_length+1]=snek._y[_length];
Nefos 3:b24ef00836c5 116 snek._dir[_length+1]=snek._dir[_length-1];
Nefos 3:b24ef00836c5 117 _length=_length+1;
Nefos 3:b24ef00836c5 118 printf("length+1 is %d", _length);
Nefos 0:2eb4d7e86e2f 119
Nefos 3:b24ef00836c5 120 }
Nefos 3:b24ef00836c5 121 */
Nefos 3:b24ef00836c5 122
Nefos 3:b24ef00836c5 123
Nefos 3:b24ef00836c5 124 //printf("x is %d ", snek._x[_length-1]);
Nefos 3:b24ef00836c5 125 if (snek._dir[_length-1]==1)
Nefos 3:b24ef00836c5 126 {
Nefos 3:b24ef00836c5 127 snek._x[_length]++;
Nefos 0:2eb4d7e86e2f 128 }
Nefos 3:b24ef00836c5 129
Nefos 1:93a4cb86f100 130 if (snek._dir[_length-1]==2)
Nefos 3:b24ef00836c5 131 {
Nefos 3:b24ef00836c5 132 snek._y[_length]--;
Nefos 0:2eb4d7e86e2f 133
Nefos 0:2eb4d7e86e2f 134 }
Nefos 3:b24ef00836c5 135
Nefos 3:b24ef00836c5 136 if (snek._dir[_length-1]==3)
Nefos 3:b24ef00836c5 137 {
Nefos 3:b24ef00836c5 138 snek._x[_length]--;
Nefos 1:93a4cb86f100 139 }
Nefos 1:93a4cb86f100 140
Nefos 3:b24ef00836c5 141 if (snek._dir[_length-1]==4)
Nefos 3:b24ef00836c5 142 {
Nefos 3:b24ef00836c5 143 snek._y[_length]++;
Nefos 3:b24ef00836c5 144 }
Nefos 1:93a4cb86f100 145
Nefos 3:b24ef00836c5 146 for (int i=0 ;_length<i ;i++)
Nefos 3:b24ef00836c5 147 {
Nefos 3:b24ef00836c5 148 snek._x[i]=snek._x[i+1];
Nefos 3:b24ef00836c5 149 snek._y[i]=snek._y[i+1];
Nefos 3:b24ef00836c5 150 //printf("done");
Nefos 3:b24ef00836c5 151 }
Nefos 3:b24ef00836c5 152
Nefos 3:b24ef00836c5 153
Nefos 0:2eb4d7e86e2f 154 //check dpad which way it is pointing
Nefos 0:2eb4d7e86e2f 155 //set direction accordingly, 1 is right, up is 2, 3 is left and 4 is down
Nefos 0:2eb4d7e86e2f 156 //set a breakpoint at head by snakeX/Y[i]
Nefos 0:2eb4d7e86e2f 157 //switch case to make sure direction is good
Nefos 0:2eb4d7e86e2f 158 //if head == food, _length++, and -direction we add 1 length
Nefos 0:2eb4d7e86e2f 159 // if head==wall game over
Nefos 3:b24ef00836c5 160 if (d==N){
Nefos 3:b24ef00836c5 161
Nefos 3:b24ef00836c5 162 if (snek._dir[_length-1]!=4)
Nefos 3:b24ef00836c5 163 {
Nefos 3:b24ef00836c5 164 snek._dir[_length-1] = 2;
Nefos 3:b24ef00836c5 165 }
Nefos 3:b24ef00836c5 166
Nefos 3:b24ef00836c5 167 }
Nefos 3:b24ef00836c5 168
Nefos 3:b24ef00836c5 169 if (d==E){
Nefos 0:2eb4d7e86e2f 170
Nefos 3:b24ef00836c5 171 if (snek._dir[_length-1]!=3)
Nefos 0:2eb4d7e86e2f 172 {
Nefos 3:b24ef00836c5 173 snek._dir[_length-1] = 1;
Nefos 3:b24ef00836c5 174 }
Nefos 3:b24ef00836c5 175
Nefos 3:b24ef00836c5 176 }
Nefos 3:b24ef00836c5 177 if (d==W){
Nefos 3:b24ef00836c5 178
Nefos 3:b24ef00836c5 179 if (snek._dir[_length-1]!=1)
Nefos 3:b24ef00836c5 180 {
Nefos 3:b24ef00836c5 181 snek._dir[_length-1] = 3;
Nefos 0:2eb4d7e86e2f 182 }
Nefos 0:2eb4d7e86e2f 183
Nefos 0:2eb4d7e86e2f 184
Nefos 0:2eb4d7e86e2f 185 }
Nefos 3:b24ef00836c5 186 if (d==S){
Nefos 0:2eb4d7e86e2f 187
Nefos 3:b24ef00836c5 188 if (snek._dir[_length-1]!=2)
Nefos 1:93a4cb86f100 189 {
Nefos 1:93a4cb86f100 190 snek._dir[_length-1] = 4;
Nefos 1:93a4cb86f100 191 }
Nefos 1:93a4cb86f100 192
Nefos 1:93a4cb86f100 193
Nefos 1:93a4cb86f100 194 }
Nefos 3:b24ef00836c5 195
Nefos 3:b24ef00836c5 196 printf("updated ");
Nefos 3:b24ef00836c5 197 add_point();
Nefos 3:b24ef00836c5 198 }//live loop
Nefos 3:b24ef00836c5 199 }
Nefos 3:b24ef00836c5 200
Nefos 3:b24ef00836c5 201 void Snake::add_point(){
Nefos 3:b24ef00836c5 202
Nefos 3:b24ef00836c5 203 posXY foodPos = _food.returnPos();
Nefos 3:b24ef00836c5 204 if(snek._x[_length-1]==foodPos.x && snek._y[_length-1]== foodPos.y)
Nefos 3:b24ef00836c5 205 {
Nefos 3:b24ef00836c5 206 snek._x[_length+1]=snek._x[_length];//-1
Nefos 3:b24ef00836c5 207 snek._y[_length+1]=snek._y[_length];
Nefos 3:b24ef00836c5 208 snek._dir[_length+1]=snek._dir[_length-1];
Nefos 3:b24ef00836c5 209 _length=_length+1;
Nefos 3:b24ef00836c5 210 _food.respawn();
Nefos 3:b24ef00836c5 211 }
Nefos 3:b24ef00836c5 212 }//end of add_point
Nefos 0:2eb4d7e86e2f 213
Nefos 2:5e04e34a3b66 214 void Snake::deadSnake(N5110 &lcd){
Nefos 3:b24ef00836c5 215
Nefos 4:c74ec3f409f9 216
Nefos 4:c74ec3f409f9 217 live--;
Nefos 4:c74ec3f409f9 218 while (live==0){
Nefos 3:b24ef00836c5 219 lcd.clear();
Nefos 3:b24ef00836c5 220 lcd.printString("Game Over",0,1);
Nefos 3:b24ef00836c5 221 lcd.printString("Press Start",0,2);
Nefos 3:b24ef00836c5 222 lcd.printString("To restart",0,3);
Nefos 3:b24ef00836c5 223 lcd.refresh();
Nefos 4:c74ec3f409f9 224
Nefos 3:b24ef00836c5 225 }
Nefos 4:c74ec3f409f9 226 //lcd.clear();
Nefos 4:c74ec3f409f9 227 //lcd.printString("Game Over",0,1);
Nefos 4:c74ec3f409f9 228 //lcd.refresh();
Nefos 2:5e04e34a3b66 229
Nefos 4:c74ec3f409f9 230 init(25,starty,startl,live);
Nefos 4:c74ec3f409f9 231
Nefos 4:c74ec3f409f9 232 }//end of deadSnake
Nefos 3:b24ef00836c5 233
Nefos 2:5e04e34a3b66 234 void Snake::checkWallCollision(N5110 &lcd){
Nefos 2:5e04e34a3b66 235
Nefos 3:b24ef00836c5 236 if (snek._x[_length]==WIDTH||snek._x[_length]==0)//if snake head hits side walls
Nefos 3:b24ef00836c5 237 {
Nefos 3:b24ef00836c5 238 deadSnake(lcd);
Nefos 3:b24ef00836c5 239 }
Nefos 3:b24ef00836c5 240 if (snek._y[_length]==CEILING||snek._y[_length]==FLOOR)//if snake hits top or bottom walls
Nefos 3:b24ef00836c5 241 {
Nefos 3:b24ef00836c5 242 deadSnake(lcd);
Nefos 3:b24ef00836c5 243 }
Nefos 2:5e04e34a3b66 244
Nefos 3:b24ef00836c5 245 }//end of checkWallCollision
Nefos 5:449858a54971 246
Nefos 5:449858a54971 247 void Snake::checkTailCollision(N5110 &lcd){
Nefos 5:449858a54971 248 for (int i=0 ;_length<i ;i++){
Nefos 5:449858a54971 249
Nefos 5:449858a54971 250 if (snek._x[_length-1]==snek._x[i] && snek._y[_length-1]==snek._y[i])
Nefos 5:449858a54971 251 {
Nefos 5:449858a54971 252 deadSnake(lcd);
Nefos 5:449858a54971 253 }
Nefos 5:449858a54971 254 }
Nefos 5:449858a54971 255
Nefos 5:449858a54971 256
Nefos 5:449858a54971 257 }