#include "Adafruit_GFX.h"
#include "Adafruit_ILI9341.h"
#define TFT_DC 9//PL1
#define TFT_CS 10//PL0
Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC);
int tx=50;
int ty=0;
int x=3;
int y=0;
int d=0;
int cords[10][21];//making array used for collisons
int LBUTTON=2;
int RBUTTON=3;
bool falling=true;
#define WHITE 0xFFFF
#define BLUE 0x00FF
#define BLACK 0x0000
#define RED 0xF000
#define YELLOW 0xFF00
int L[1][4][2]={{{0,0},{0,1},{1,1},{2,1}}};
int COLOR = BLUE;
void setup() {
  pinMode(LBUTTON, INPUT);
  pinMode(RBUTTON, INPUT);
  tft.begin();
  Serial.begin(9600);
  while (tx<190){//making grid
    while(ty<(14*21)){
      tft.drawRect(tx,ty,14,14,WHITE);
      ty+=14;
    }
    tx+=14;
    ty=0;
  }
  tx=50;
  while (falling==true){
    delay(500);
    for (int i=0;i<=3;i++){
      tx=14*(L[0][i][0]+x)+50;
      ty=14*(L[0][i][1]+y);
      tft.fillRect(tx,ty,14,14,BLACK);
      tft.drawRect(tx,ty,14,14,WHITE);
    }
    y+=1;
    for(int i=0;i<=3;i++){
      tx=14*(L[0][i][0]+x)+50;
      ty=14*(L[0][i][1]+y);
      if((cords[(L[0][i][0]+x-1)][L[0][i][1]+y]=1)){
        xmove=1;
      }
      tft.fillRect(tx,ty,14,14,0xFFFF);
      if ((L[0][i][1]+y+1)==21){
      falling=false;
        for(int b=0;b<=3;b++){
          cords[L[0][b][0]+x][L[0][b][1]+y]=1;
        }
      }
    }
    int LBUTTONSTATE=digitalRead(LBUTTON);
      int RBUTTONSTATE=digitalRead(RBUTTON);
      if ((LBUTTONSTATE==HIGH)&&(x>0)&&(cords[(L[0][i][0]+x-1)][L[0][i][1]+y]!=1)){
      x+=1;
      }
      if ((RBUTTONSTATE==HIGH)&&(x<9)&&(cords[(L[0][i][0]+x+1)][L[0][i][1]+y]!=1)){
      x+=1;
    }
      
  }
}
void loop() {
  x=5;
  tx=14*x+50;
  ty=0;
  y=ty/14;
  while ((ty<(14*20))&&(cords[x][y+1]!=1)){
    tft.fillRect(tx,ty,14,14,BLACK);
    tft.drawRect(tx,ty,14,14,WHITE);
    ty+=14;
    int LBUTTONSTATE=digitalRead(LBUTTON);
    int RBUTTONSTATE=digitalRead(RBUTTON);
    if ((LBUTTONSTATE==HIGH)&&(x>0)&&(cords[x-1][y]!=1)){
      x-=1;
      tx=14*x+50;
    }
    if ((RBUTTONSTATE==HIGH)&&(x<9)&&(cords[x+1][y]!=1)){
      x+=1;
      tx=14*x+50;
    }
    tft.fillRect(tx,ty,14,14,COLOR);
    y=ty/14;
    delay(100);
  }
  cords[x][y]=1;
  for(int i=20;i>0;i--){
    d=0;
    for(int c=0;c<10;c++){
      d=cords[c][i]+d;
      if (d==10){
        for(int h=0;h<10;h++){
          tx=tx=14*h+50;
          ty=14*i;
          tft.fillRect(tx,ty,14,14,BLACK);
          tft.drawRect(tx,ty,14,14,WHITE);
          cords[h][i]=0;
          falling = true;
        }
        for (int b=i;b>0;b--){
          for(int h=0;h<10;h++){
            if (cords[h][b]==1){
            cords[h][b]=0;
            tx=14*h+50;
            ty=14*b;
            tft.fillRect(tx,ty,14,14,BLACK);
            tft.drawRect(tx,ty,14,14,WHITE);
            cords[h][b+1]=1;
            ty=14*(b+1);
            tft.fillRect(tx,ty,14,14,WHITE);
            i=21;
            }
          }
        }
      }
    }
  }
}