Touchscreen Block Breaker with Rainbow LEDs

#include <Arduino.h>
#include <SPI.h>
#include <Preferences.h>
#include <Adafruit_GFX.h>
#include <Adafruit_ILI9341.h>
#include <FastLED.h>

#define TFT_CS 15
#define TFT_DC 27
#define TFT_RST 26
#define TFT_MOSI 23
#define TFT_MISO 19
#define TFT_SCK 18
#define JOYSTICK_X 34
#define JOYSTICK_Y 35
#define START_BUTTON 32
#define LED_DATA 33
#define LED_COUNT 19

enum Mode { MENU, READY, PLAY, FINISHED };

// Forward declarations

// Forward declarations
void drawLives();

const char* ns(uint8_t n);
bool isBoss();
uint16_t brickColor(int r);
void center(const char* s,int y,uint16_t c,uint8_t z);
void panel(const char* a,const char* b,uint16_t c);
void scan();
void menu();
void hud();
void drawBrick(int r,int c);
void drawPaddle(int x);
void drawBall(float x,float y);
void drawBoss(bool erase);
void buildLevel();
bool remain();
uint64_t mask();
void unmask(uint64_t m);
void save();
bool load(int n);
void resetPositions();
void fresh();
void scene();
void openFile();
void exitMenu();
void nextLevel();
void buttonPress();
void lostBall();
void tick();

const uint16_t NAVY=0x000F, PURPLE=0x801F, PINK=0xF81F, ORANGE=0xFD20, GOLD=0xFEA0, MINT=0x07F5, SKY=0x867F, GREY=0x4208;
const int W=320,H=240,HUD=25,ROWS=6,COLS=8,BW=37,BH=13,GAP=2,PW=58,PH=8,PY=219,R=4;
const uint8_t SLOTS=7, LAST_LEVEL=7;

Adafruit_ILI9341 tft(TFT_CS,TFT_DC,TFT_RST);
Preferences prefs;
CRGB leds[LED_COUNT];
bool bricks[ROWS][COLS], used[SLOTS];
Mode mode=MENU;
int selected=0, slot=-1, px, opx;
float bx,by,obx,oby,dx,dy;
uint16_t score;
uint8_t lives, level=1, bossHP, hue;
float bossX=110, oldBossX=110, bossDX=1.15;
uint32_t frame,rainbow,lastMove;

const char* ns(uint8_t n) { static const char* a[SLOTS]={"bb0","bb1","bb2","bb3","bb4","bb5","bb6"}; return a[n]; }
bool isBoss() { return level==3 || level==7; }
uint16_t brickColor(int r) { const uint16_t c[ROWS]={PURPLE,PINK,ILI9341_RED,ORANGE,GOLD,MINT}; return c[(r+level-1)%ROWS]; }

void center(const char* s,int y,uint16_t c,uint8_t z) {
  int16_t x1,y1; uint16_t w,h; tft.setTextSize(z); tft.setTextColor(c); tft.getTextBounds(s,0,y,&x1,&y1,&w,&h); tft.setCursor((W-w)/2,y); tft.print(s);
}
void panel(const char* a,const char* b,uint16_t c) {
  tft.fillRoundRect(20,135,280,55,8,NAVY); tft.drawRoundRect(20,135,280,55,8,c); center(a,143,c,2); center(b,169,ILI9341_WHITE,1);
}
void scan() {
  for(int i=0;i<SLOTS;i++) { prefs.begin(ns(i),true); used[i]=prefs.getBool("v",false); prefs.end(); }
}
void menu() {
  tft.fillScreen(NAVY); tft.fillRect(0,0,W,35,PURPLE); center("BLOCK BREAKER",7,GOLD,2); center("7 FILE CAMPAIGN",42,SKY,2);
  for(int i=0;i<SLOTS;i++) {
    int y=66+i*23; uint16_t fill=i==selected?PINK:GREY;
    tft.fillRoundRect(28,y,264,19,5,fill); tft.drawRoundRect(28,y,264,19,5,i==selected?ILI9341_WHITE:SKY);
    tft.setTextSize(1); tft.setTextColor(ILI9341_WHITE,fill); tft.setCursor(40,y+6); tft.print("FILE "); tft.print(i+1);
    tft.setCursor(176,y+6);
    if(used[i]) { prefs.begin(ns(i),true); uint8_t l=prefs.getUChar("lv",1); prefs.end(); tft.print("LEVEL "); tft.print(l); }
    else tft.print("NEW GAME");
  }
  center("JOYSTICK UP/DOWN: CHOOSE   BUTTON: OPEN",228,MINT,1);
}
void drawLives() {
  const int startX=281, y=11;
  for(int i=0;i<3;i++) {
    int x=startX+i*12;
    uint16_t color=i<lives ? PINK : GREY;
    // Two circles plus a small triangle create a clear heart at this HUD size.
    tft.fillCircle(x-3,y-2,3,color);
    tft.fillCircle(x+3,y-2,3,color);
    tft.fillTriangle(x-6,y-1,x+6,y-1,x,y+6,color);
    if(i<lives) tft.drawPixel(x-2,y-3,ILI9341_WHITE);
  }
}
void hud() {
  tft.fillRect(0,0,W,HUD,NAVY); tft.drawFastHLine(0,HUD-1,W,SKY); tft.setTextSize(1);
  tft.setTextColor(GOLD,NAVY); tft.setCursor(8,8); tft.print("FILE "); tft.print(slot+1);
  tft.setTextColor(MINT,NAVY); tft.setCursor(72,8); tft.print("LEVEL "); tft.print(level); tft.print("/7");
  tft.setTextColor(ILI9341_WHITE,NAVY); tft.setCursor(151,8); tft.print("SCORE "); tft.print(score);
  drawLives();
}
void drawBrick(int r,int c) {
  int x=7+c*(BW+GAP),y=HUD+8+r*(BH+GAP);
  if(!bricks[r][c]) { tft.fillRect(x-1,y-1,BW+2,BH+3,ILI9341_BLACK); return; }
  tft.fillRoundRect(x+1,y+2,BW,BH,4,GREY); tft.fillRoundRect(x,y,BW,BH,4,brickColor(r));
  tft.drawRoundRect(x,y,BW,BH,4,ILI9341_WHITE); tft.drawFastHLine(x+5,y+2,BW-10,ILI9341_WHITE);
}
void drawPaddle(int x) { tft.fillRoundRect(x,PY+2,PW,PH,4,GREY); tft.fillRoundRect(x,PY,PW,PH,4,SKY); tft.drawFastHLine(x+8,PY+2,PW-16,ILI9341_WHITE); }
void drawBall(float x,float y) { tft.fillCircle(x,y,R,PINK); tft.drawCircle(x,y,R,ILI9341_WHITE); tft.fillCircle(x-1,y-1,1,ILI9341_WHITE); }
void drawBoss(bool erase=false) {
  int x=(int)oldBossX, y=120;
  if(erase) { tft.fillRect(x-2,y-2,104,38,ILI9341_BLACK); return; }
  x=(int)bossX; tft.fillRoundRect(x,y,100,33,10,ILI9341_RED); tft.drawRoundRect(x,y,100,33,10,GOLD);
  tft.fillCircle(x+27,y+15,7,ILI9341_WHITE); tft.fillCircle(x+73,y+15,7,ILI9341_WHITE); tft.fillCircle(x+27,y+15,3,NAVY); tft.fillCircle(x+73,y+15,3,NAVY);
  tft.fillRoundRect(x+25,y+25,50,4,2,NAVY); tft.fillRect(x+3,y+3,bossHP*94/12,3,GOLD);
}
void buildLevel() {
  for(int r=0;r<ROWS;r++) for(int c=0;c<COLS;c++) {
    bool on=true;
    if(level==2) on=((r+c)%2==0 || r==0);
    else if(level==3) on=(r<3 || c==0 || c==7);
    else if(level==4) on=(r==0 || r==5 || c==r || c==7-r);
    else if(level==5) on=(r<2 || (r+c)%3!=1);
    else if(level==6) on=((r%2==0) || c==0 || c==7);
    else if(level==7) on=(r<4 || c==0 || c==7);
    bricks[r][c]=on;
  }
  bossHP=isBoss()?12:0; bossX=oldBossX=110; bossDX=level==7?1.75:1.15;
}
bool remain() { for(int r=0;r<ROWS;r++) for(int c=0;c<COLS;c++) if(bricks[r][c]) return true; return false; }
uint64_t mask() { uint64_t m=0; int b=0; for(int r=0;r<ROWS;r++) for(int c=0;c<COLS;c++,b++) if(bricks[r][c]) m|=1ULL<<b; return m; }
void unmask(uint64_t m) { int b=0; for(int r=0;r<ROWS;r++) for(int c=0;c<COLS;c++,b++) bricks[r][c]=(m&(1ULL<<b))!=0; }
void save() {
  if(slot<0) return; uint64_t m=mask(); prefs.begin(ns(slot),false);
  prefs.putBool("v",true); prefs.putUInt("lo",(uint32_t)m); prefs.putUInt("hi",(uint32_t)(m>>32)); prefs.putUShort("sc",score); prefs.putUChar("li",lives); prefs.putUChar("lv",level); prefs.putUChar("bh",bossHP); prefs.end(); used[slot]=true;
}
bool load(int n) {
  prefs.begin(ns(n),true); bool ok=prefs.getBool("v",false);
  if(ok) { uint64_t lo=prefs.getUInt("lo",0), hi=prefs.getUInt("hi",0); unmask(lo|(hi<<32)); score=prefs.getUShort("sc",0); lives=prefs.getUChar("li",3); level=prefs.getUChar("lv",1); bossHP=prefs.getUChar("bh",isBoss()?12:0); }
  prefs.end(); return ok && level>=1 && level<=LAST_LEVEL && lives>0;
}
void resetPositions() { px=opx=(W-PW)/2; bx=obx=W/2; by=oby=PY-R-2; dx=2.25; dy=-2.25; }
void fresh() { level=1; score=0; lives=3; buildLevel(); resetPositions(); }
void scene() { tft.fillScreen(ILI9341_BLACK); hud(); for(int r=0;r<ROWS;r++) for(int c=0;c<COLS;c++) drawBrick(r,c); if(isBoss()) drawBoss(); drawPaddle(px); drawBall(bx,by); }
void openFile() {
  slot=selected; if(!load(slot)) fresh(); else { resetPositions(); bossX=oldBossX=110; bossDX=level==7?1.75:1.15; }
  mode=READY; scene(); panel("READY!","BUTTON TO PLAY",GOLD);
}
void exitMenu() { if(mode==PLAY||mode==READY) save(); mode=MENU; slot=-1; scan(); menu(); }
void nextLevel() {
  if(level>=LAST_LEVEL) { mode=FINISHED; save(); panel("CAMPAIGN CLEAR!","BUTTON: PLAY AGAIN",MINT); return; }
  level++; buildLevel(); resetPositions(); save(); mode=READY; scene();
  char msg[25]; snprintf(msg,sizeof(msg),"LEVEL %d",level); panel(msg,isBoss()?"BOSS FIGHT!":"BUTTON TO START",isBoss()?ILI9341_RED:GOLD);
}
void buttonPress() {
  if(mode==MENU) openFile();
  else if(mode==READY) { tft.fillRect(20,135,280,55,ILI9341_BLACK); mode=PLAY; save(); }
  else if(mode==FINISHED) { fresh(); mode=READY; save(); scene(); panel("NEW CAMPAIGN","BUTTON TO PLAY",GOLD); }
}
void lostBall() {
  lives--; buildLevel(); resetPositions(); mode=READY; scene();
  if(!lives) { mode=FINISHED; save(); panel("GAME OVER","BUTTON: NEW GAME",ILI9341_RED); }
  else { save(); panel("BALL LOST","BLOCKS REBUILT - BUTTON",ORANGE); }
}
void tick() {
  px=constrain(map(analogRead(JOYSTICK_X),0,4095,0,W-PW),0,W-PW);
  if(px!=opx) { tft.fillRect(opx-1,PY-1,PW+2,PH+4,ILI9341_BLACK); drawPaddle(px); opx=px; }
  tft.fillRect((int)obx-R-1,(int)oby-R-1,R*2+3,R*2+3,ILI9341_BLACK); drawPaddle(px);
  if(isBoss()) { drawBoss(true); oldBossX=bossX; bossX+=bossDX; if(bossX<5||bossX>215) { bossDX=-bossDX; bossX+=bossDX; } drawBoss(); }
  bx+=dx; by+=dy;
  if(bx<=R||bx>=W-R-1) { dx=-dx; bx=constrain(bx,(float)R,(float)(W-R-1)); }
  if(by<=HUD+R) { dy=-dy; by=HUD+R; }
  if(dy>0 && by+R>=PY && by-R<=PY+PH && bx+R>=px && bx-R<=px+PW) { dx=(bx-(px+PW/2.0))/(PW/2.0)*3.5; if(fabs(dx)<.75) dx=dx<0?-.75:.75; dy=-fabs(dy); by=PY-R; }
  if(by-R>H) { lostBall(); return; }
  if(isBoss() && bx+R>=bossX && bx-R<=bossX+100 && by+R>=120 && by-R<=153) { bossHP--; score+=25; dy=-dy; by=155; hud(); if(!bossHP && !remain()) { nextLevel(); return; } save(); }
  for(int r=0;r<ROWS;r++) for(int c=0;c<COLS;c++) {
    int x=7+c*(BW+GAP),y=HUD+8+r*(BH+GAP);
    if(bricks[r][c] && bx+R>=x && bx-R<=x+BW && by+R>=y && by-R<=y+BH) {
      bricks[r][c]=false; drawBrick(r,c); dy=-dy; score+=10; hud();
      if(!remain() && (!isBoss() || bossHP==0)) { nextLevel(); return; }
      save(); r=ROWS; break;
    }
  }
  obx=bx; oby=by; if(mode==PLAY) drawBall(bx,by);
}
void setup() {
  pinMode(START_BUTTON,INPUT_PULLUP); analogReadResolution(12);
  SPI.begin(TFT_SCK,TFT_MISO,TFT_MOSI,TFT_CS); tft.begin(); tft.setRotation(1);
  FastLED.addLeds<WS2812B,LED_DATA,GRB>(leds,LED_COUNT); FastLED.setBrightness(96); FastLED.clear(true);
  scan(); menu();
}
void loop() {
  if(millis()-rainbow>=35) { rainbow=millis(); fill_rainbow(leds,LED_COUNT,hue++,255/LED_COUNT); FastLED.show(); }
  static bool last=HIGH,longDone=false; static uint32_t down=0; bool now=digitalRead(START_BUTTON);
  if(last==HIGH && now==LOW) { down=millis(); longDone=false; }
  if(now==LOW && !longDone && mode!=MENU && millis()-down>=1500) { exitMenu(); longDone=true; }
  if(last==LOW && now==HIGH && !longDone) buttonPress(); last=now;
  if(mode==MENU) { int y=analogRead(JOYSTICK_Y); if(millis()-lastMove>180 && (y<900||y>3200)) { selected=(selected+(y<900?-1:1)+SLOTS)%SLOTS; lastMove=millis(); menu(); } return; }
  if(mode==PLAY && millis()-frame>=20) { frame=millis(); tick(); }
}