LI Saiwen
Snake game snake library
Diff: Snake.cpp
- Revision:
- 6:cc8d2088f490
- Parent:
- 5:449858a54971
- Child:
- 7:a2f426a37e60
diff -r 449858a54971 -r cc8d2088f490 Snake.cpp
--- a/Snake.cpp Fri May 05 14:51:27 2017 +0000
+++ b/Snake.cpp Fri May 05 15:06:54 2017 +0000
@@ -19,24 +19,20 @@
}
+/************************Functions************************/
+
void Snake::init(int x, int y, int lenght, int _live){
- //initalizing the starting variables
- //snek._x[0]=x;
- //snek._y[0]=y;
- startx=x;
+ //initalizing the starting variables
+ startx=x;//saving these variables for later init
starty=y;
startl=lenght;
live=_live;
- /*if (live==0){
- live=3;
- }*/
- _length = lenght;
-
- _food.init();
- for (int i=0;_length>i;i++)
+ _length = lenght;
+ _food.init();//init food
+ for (int i=0;_length>i;i++)//create start snake
{
snek._x[i]=x+i;
snek._y[i]=y;
@@ -45,27 +41,20 @@
snek._x[_length]=x+_length;
snek._y[_length]=y;
- /* snek._y[0]=y;
- snek._y[1]=y+1;
- snek._y[2]=y+2;
- snek._y[3]=y+2;
- snek._y[4]=y+3;
- snek._y[5]=y+3;
- snek._y[6]=y+4;*/
_direction = 1;//1 is East, 2 is South, 3 is West, 4 is North
printf("xog is %d ", snek._x[_length-1]);
//printf("initalized");
- }
+}//end of init
void Snake::draw(N5110 &lcd){
- checkWallCollision(lcd);
+ checkWallCollision(lcd);// if head==wall game over
checkTailCollision(lcd);
if (live!=0){
lcd.clear();
- waitCount=((float)_length/3)+5;
+ waitCount=((float)_length/3)+5;//set wait so the game is speeding up
waitTime=(1/waitCount);
wait(waitTime);
char buffer1[14];
@@ -74,10 +63,11 @@
sprintf(buffer2,"%2d",_length);
lcd.printString(buffer1,25,0);
lcd.printString(buffer2,70,0);
- _food.draw(lcd);
- lcd.drawRect(0,8,84,48-8,FILL_TRANSPARENT);
lcd.printString("Life:",0,0);
- lcd.printString("Pts:",40,0);
+ lcd.printString("Pts:",40,0);//display life and points
+ _food.draw(lcd);//make first food
+ lcd.drawRect(0,8,84,48-8,FILL_TRANSPARENT);//
+
for ( int i=0; _length>i;i++){
if (snek._x!=0)
@@ -88,28 +78,24 @@
}
}
-
-
lcd.refresh();
//printf("drawn");
}
}//live loop
-}
+}//end of draw
void Snake::update(Gamepad &pad){
if (live!=0){
d=pad.get_direction();
- startx=snek._x[0];
-
printf("x+1 is %d", snek._x[_length+1]);
printf("y+1 is %d", snek._y[_length+1]);
printf("dir+1 is %d", snek._dir[_length+1]);
printf("length is %d", _length);
- /*if ( pad.check_event(Gamepad::A_PRESSED) == true)//testing the add_point manually
+ /*if ( pad.check_event(Gamepad::A_PRESSED) == true)//testing the addPoint manually
{
snek._x[_length+1]=snek._x[_length];//-1
snek._y[_length+1]=snek._y[_length];
@@ -119,9 +105,7 @@
}
*/
-
-
- //printf("x is %d ", snek._x[_length-1]);
+ //printf("x is %d ", snek._x[_length-1]);
if (snek._dir[_length-1]==1)
{
snek._x[_length]++;
@@ -149,15 +133,9 @@
snek._y[i]=snek._y[i+1];
//printf("done");
}
-
-
- //check dpad which way it is pointing
- //set direction accordingly, 1 is right, up is 2, 3 is left and 4 is down
- //set a breakpoint at head by snakeX/Y[i]
- //switch case to make sure direction is good
- //if head == food, _length++, and -direction we add 1 length
- // if head==wall game over
- if (d==N){
+ //check dpad which way it is pointing
+ //set direction accordingly, 1 is right, up is 2, 3 is left and 4 is down
+ if (d==N){// if stick points up, go up
if (snek._dir[_length-1]!=4)
{
@@ -166,7 +144,7 @@
}
- if (d==E){
+ if (d==E){// if stick points right, go right
if (snek._dir[_length-1]!=3)
{
@@ -174,7 +152,8 @@
}
}
- if (d==W){
+
+ if (d==W){// if stick points left, go left
if (snek._dir[_length-1]!=1)
{
@@ -183,7 +162,8 @@
}
- if (d==S){
+
+ if (d==S){// if stick points down, go down
if (snek._dir[_length-1]!=2)
{
@@ -194,11 +174,11 @@
}
printf("updated ");
- add_point();
+ addPoint();
}//live loop
-}
+}//end of update
-void Snake::add_point(){
+void Snake::addPoint(){
posXY foodPos = _food.returnPos();
if(snek._x[_length-1]==foodPos.x && snek._y[_length-1]== foodPos.y)
@@ -206,10 +186,10 @@
snek._x[_length+1]=snek._x[_length];//-1
snek._y[_length+1]=snek._y[_length];
snek._dir[_length+1]=snek._dir[_length-1];
- _length=_length+1;
- _food.respawn();
+ _length=_length+1;//if head == food, _length++
+ _food.respawn();//spawn new food
}
-}//end of add_point
+}//end of addPoint
void Snake::deadSnake(N5110 &lcd){
@@ -227,7 +207,7 @@
//lcd.printString("Game Over",0,1);
//lcd.refresh();
- init(25,starty,startl,live);
+ init(startx,starty,startl,live);
}//end of deadSnake
@@ -254,4 +234,4 @@
}
-}
\ No newline at end of file
+}//end of checkTailCollision
\ No newline at end of file