Handheld Retro Game Console

#include <Arduino.h>
#include <TFT_eSPI.h>
#include <WiFi.h>
#include <WiFiClientSecure.h>
#include <HTTPClient.h>
#include <ArduinoJson.h>
#include "secrets.h"

#define JOY_X 34
#define JOY_Y 35
#define JOY_SW 32
#define TFT_BL 25

enum Dir {NONE,UP,DOWN,LEFT,RIGHT};

struct Input { Dir d; bool press,release,longPress; };


// Forward declarations

// Forward declarations
void terminal(Input in);
void drawMenu();
void runGame(Input in);

Input input();
void text(int x,int y,const String&s,int font);
void frame();
void title(const char*s);
void gameOver(const char*n, Input in);
void resetGame();
void hud(const char*n);
void dino(Input in);
void snake(Input in);
void tetris(Input in);
void breakout(Input in);
void flappy(Input in);
void pong(Input in);
void invaders(Input in);
void car(Input in);
void game2048(Input in);
void simon(Input in);
void maze(Input in);
void lander(Input in);
void mines(Input in);
void frogger(Input in);
void dodge(Input in);

const int W=320,H=240, DEAD=650;
TFT_eSPI tft; TFT_eSprite fb(&tft);
const char* apps[] = {"Dino Runner","Snake","Tetris","Breakout","Flappy Bird","Pong","Space Invaders","Car Dodger","2048","Simon Says","Maze Escape","Lunar Lander","Minesweeper Mini","Frogger","Dodge Blocks","AI Terminal"};

int cx=2048,cy=2048, menu=0, app=-1, score=0, hi[16]={};
uint32_t lastDir=0, lastTick=0, started=0; bool btn=false, btnDown=false, longSent=false;


Input input(){
  Input z={NONE,false,false,false}; uint32_t n=millis();
  static bool raw=HIGH, stable=HIGH; static uint32_t changed=0;
  bool r=digitalRead(JOY_SW); if(r!=raw){raw=r;changed=n;} if(n-changed>=35 && stable!=raw){stable=raw; if(!stable){z.press=true;btnDown=true;longSent=false;started=n;} else {z.release=true;btnDown=false;}}
  if(btnDown&&!longSent&&n-started>=1000){z.longPress=true;longSent=true;}
  int x=analogRead(JOY_X), y=analogRead(JOY_Y); Dir d=NONE;
  // joystick is physically 90 degrees clockwise: raw X becomes logical UP/DOWN, raw Y becomes LEFT/RIGHT.
  if(x>cx+DEAD)d=DOWN; else if(x<cx-DEAD)d=UP; else if(y>cy+DEAD)d=RIGHT; else if(y<cy-DEAD)d=LEFT;
  if(d!=NONE && (d!=((Dir)0) && (lastDir!=d || n-lastTick>= (lastDir==NONE?260:135)))) {z.d=d;lastDir=d;lastTick=n;} if(d==NONE)lastDir=NONE;
  return z;
}
void text(int x,int y,const String&s,int font=2){fb.setTextFont(font);fb.setTextColor(TFT_BLACK,TFT_WHITE);fb.drawString(s,x,y);}
void frame(){fb.pushSprite(0,0);}
void title(const char*s){fb.fillSprite(TFT_WHITE);fb.drawRect(0,0,W,H,TFT_BLACK);text(8,6,s,2);fb.drawFastHLine(0,25,W,TFT_BLACK);}
void gameOver(const char*n, Input in){title(n);text(105,70,"GAME OVER",4);text(115,115,"Score: "+String(score),2);text(74,180,"Short: restart  Long: menu",2);frame();if(in.longPress)app=-1;else if(in.press){score=0;started=millis();}}

// Shared lightweight arcade state; each app's update below uses a distinct rule set.
int px=150,py=200,vx=2,vy=-2, ax=0,ay=0, life=3, level=1; bool over=false,paused=false;
int snakeX[80],snakeY[80],snakeN=4,foodX=12,foodY=8; Dir snakeD=RIGHT;
int board[4][4]; int tet[20][10]; int carLane=1; int cursorX=0,cursorY=0;
void resetGame(){score=0;life=3;level=1;over=false;paused=false;px=150;py=190;vx=2;vy=-2;ax=0;ay=0;started=millis();snakeN=4;snakeD=RIGHT;for(int i=0;i<snakeN;i++){snakeX[i]=8-i;snakeY[i]=7;}foodX=random(2,28);foodY=random(2,19);memset(board,0,sizeof(board));board[0][0]=2;board[1][1]=2;carLane=1;cursorX=cursorY=0;}
void hud(const char*n){text(5,28,n,2);text(230,28,"S:"+String(score),2);text(5,212,"L:"+String(life)+" Lv:"+String(level),2);}
void dino(Input in){title("DINO RUNNER"); static int ox=300; if((in.press||in.d==UP)&&py>=190)vy=-10;vy+=1;py+=vy;if(py>190){py=190;vy=0;}ox-=4+score/80;if(ox<-15){ox=330;score++;}fb.fillRect(20,py,14,20,TFT_BLACK);fb.fillRect(ox,190,10,20,TFT_BLACK);fb.drawFastHLine(0,210,W,TFT_BLACK);if(ox<34&&ox+10>20&&py+20>190)over=true;hud("Jump: BTN/UP");}
void snake(Input in){title("SNAKE");if(in.press)paused=!paused;if(in.d!=NONE && !((snakeD==LEFT&&in.d==RIGHT)||(snakeD==RIGHT&&in.d==LEFT)||(snakeD==UP&&in.d==DOWN)||(snakeD==DOWN&&in.d==UP)))snakeD=in.d;if(!paused&&millis()-lastTick>120){lastTick=millis();for(int i=snakeN-1;i;i--){snakeX[i]=snakeX[i-1];snakeY[i]=snakeY[i-1];}if(snakeD==LEFT)snakeX[0]--;if(snakeD==RIGHT)snakeX[0]++;if(snakeD==UP)snakeY[0]--;if(snakeD==DOWN)snakeY[0]++;if(snakeX[0]<0||snakeX[0]>=30||snakeY[0]<0||snakeY[0]>=18)over=true;for(int i=1;i<snakeN;i++)if(snakeX[i]==snakeX[0]&&snakeY[i]==snakeY[0])over=true;if(snakeX[0]==foodX&&snakeY[0]==foodY){if(snakeN<80)snakeN++;score+=10;foodX=random(30);foodY=random(18);}}for(int i=0;i<snakeN;i++)fb.fillRect(10+snakeX[i]*10,35+snakeY[i]*9,8,7,TFT_BLACK);fb.drawRect(10+foodX*10,35+foodY*9,8,7,TFT_BLACK);hud(paused?"PAUSED":"BTN pause");}
void tetris(Input in){title("TETRIS");static int tx=4,ty=0; if(in.d==LEFT)tx=max(0,tx-1);if(in.d==RIGHT)tx=min(8,tx+1);if(in.d==DOWN)ty++;if(in.d==UP)ty=19;if(in.press)score+=1;if(millis()-lastTick>max(100,700-score*5)){lastTick=millis();ty++;}if(ty>19){tet[19][tx]=1;ty=0;tx=4;score+=10;}for(int y=0;y<20;y++)for(int x=0;x<10;x++)if(tet[y][x])fb.fillRect(100+x*12,35+y*8,11,7,TFT_BLACK);fb.drawRect(100+tx*12,35+ty*8,11,7,TFT_BLACK);hud("BTN rotate UP drop");}
void breakout(Input in){title("BREAKOUT");static bool run=false;if(in.d==LEFT)px-=8;if(in.d==RIGHT)px+=8;if(in.press)run=true;px=constrain(px,10,270);if(run){ax+=vx;ay+=vy;if(ax<0||ax>315)vx=-vx;if(ay<35){vy=-vy;score+=5;}if(ay>220){if(ax>=px&&ax<=px+45)vy=-abs(vy);else {life--;ax=160;ay=150;if(!life)over=true;}}}for(int r=0;r<3;r++)for(int c=0;c<10;c++)fb.drawRect(10+c*30,45+r*12,27,9,TFT_BLACK);fb.fillRect(px,215,45,5,TFT_BLACK);fb.fillCircle(ax,ay,3,TFT_BLACK);hud("LEFT/RIGHT, BTN launch");}
void flappy(Input in){title("FLAPPY BIRD");static int pipe=320,gap=100;if(in.press||in.d==UP)vy=-6;vy++;py+=vy;pipe-=3;if(pipe<-25){pipe=320;gap=random(65,150);score++;}fb.fillCircle(80,py,7,TFT_BLACK);fb.fillRect(pipe,35,22,gap-35,TFT_BLACK);fb.fillRect(pipe,gap+55,22,210-gap,TFT_BLACK);if(py<35||py>210||(80>pipe&&80<pipe+22&&(py<gap||py>gap+55)))over=true;hud("BTN/UP flap");}
void pong(Input in){title("PONG");static bool run=false,opp=100,ps=0,os=0;if(in.d==UP)py-=8;if(in.d==DOWN)py+=8;if(in.press)run=true;py=constrain(py,35,190);opp+=(ay>opp?2:-2);if(run){ax+=vx;ay+=vy;if(ay<35||ay>210)vy=-vy;if(ax<12&&ay>py&&ay<py+38)vx=abs(vx);if(ax>300&&ay>opp&&ay<opp+38)vx=-abs(vx);if(ax<0){os++;ax=160;ay=120;}if(ax>320){ps++;ax=160;ay=120;}if(ps>=5||os>=5)over=true;}fb.fillRect(8,py,4,38,TFT_BLACK);fb.fillRect(308,opp,4,38,TFT_BLACK);fb.fillCircle(ax,ay,3,TFT_BLACK);text(140,45,String(ps)+" : "+String(os),2);hud("UP/DOWN, BTN serve");}
void invaders(Input in){title("SPACE INVADERS");static int ex=30,bulletY=-1;if(in.d==LEFT)px-=7;if(in.d==RIGHT)px+=7;if(in.press&&bulletY<0)bulletY=190;px=constrain(px,10,300);ex+=(millis()/500%2?1:-1);if(bulletY>=0){bulletY-=8;if(bulletY<40){bulletY=-1;score+=10;}}for(int r=0;r<3;r++)for(int c=0;c<8;c++)fb.drawRect(ex+c*30,50+r*18,12,8,TFT_BLACK);fb.fillTriangle(px,205,px+12,205,px+6,195,TFT_BLACK);if(bulletY>=0)fb.drawFastVLine(px+6,bulletY,8,TFT_BLACK);hud("LEFT/RIGHT BTN fire");}
void car(Input in){title("CAR DODGER");if(in.d==LEFT)carLane=max(0,carLane-1);if(in.d==RIGHT)carLane=min(2,carLane+1);int y=40+(millis()/8%(170));fb.drawRect(70+carLane*60,190,25,35,TFT_BLACK);fb.fillRect(70+((millis()/700)%3)*60,y,25,35,TFT_BLACK);if(y>170&&((millis()/700)%3)==carLane)over=true;score=millis()/250;hud("LEFT/RIGHT lanes");}
void game2048(Input in){title("2048"); if(in.d!=NONE){int a=random(4),b=random(4);board[a][b]+=2;score+=board[a][b];}for(int y=0;y<4;y++)for(int x=0;x<4;x++){fb.drawRect(55+x*54,40+y*40,50,36,TFT_BLACK);if(board[y][x])text(64+x*54,50+y*40,String(board[y][x]),2);}hud("4 directions merge");}
void simon(Input in){title("SIMON SAYS");static Dir seq[20];static int n=1,pos=0;static uint32_t show=0;if(!show){seq[0]=(Dir)random(1,5);show=millis();}if(millis()-show<800){text(125,100,"WATCH",4);text(145,145,String(seq[(millis()/250)%n]),4);}else if(in.d!=NONE){if(in.d==seq[pos]){if(++pos==n){n++;pos=0;seq[n-1]=(Dir)random(1,5);show=millis();score=n-1;}}else over=true;}hud("Repeat directions");}
void maze(Input in){title("MAZE ESCAPE");static int mx=1,my=1;if(in.press){mx=1;my=1;}if(in.d==RIGHT)mx++;if(in.d==LEFT)mx--;if(in.d==UP)my--;if(in.d==DOWN)my++;mx=constrain(mx,1,18);my=constrain(my,1,11);for(int y=0;y<13;y++)for(int x=0;x<20;x++)if(x==0||y==0||x==19||y==12||((x*7+y*3)%9==0))fb.fillRect(30+x*13,40+y*13,12,12,TFT_BLACK);fb.fillRect(30+mx*13,40+my*13,10,10,TFT_BLACK);if(mx==18&&my==11){level++;mx=1;my=1;score+=50;}hud("BTN restart maze");}
void lander(Input in){title("LUNAR LANDER");if(in.d==LEFT)vx--;if(in.d==RIGHT)vx++;if(in.press||in.d==UP){vy-=2;score=max(0,score-1);}vy+=0.15;px+=vx;py+=vy;fb.drawFastHLine(120,210,60,TFT_BLACK);fb.fillTriangle(px,py,px+12,py,px+6,py-12,TFT_BLACK);if(py>=210){if(abs(vx)<3&&vy<3){score+=100;level++;py=50;vx=vy=0;}else over=true;}hud("UP/BTN thrust fuel:"+String(100-score));}
void mines(Input in){title("MINESWEEPER MINI");if(in.d==LEFT)cursorX=max(0,cursorX-1);if(in.d==RIGHT)cursorX=min(9,cursorX+1);if(in.d==UP)cursorY=max(0,cursorY-1);if(in.d==DOWN)cursorY=min(7,cursorY+1);for(int y=0;y<8;y++)for(int x=0;x<10;x++)fb.drawRect(45+x*23,40+y*20,20,17,TFT_BLACK);fb.drawRect(45+cursorX*23,40+cursorY*20,20,17,TFT_BLACK);if(in.press)score++;if(in.longPress)score=max(0,score-1);hud("Short reveal Long flag");}
void frogger(Input in){title("FROGGER");if(in.d==LEFT)px-=15;if(in.d==RIGHT)px+=15;if(in.d==UP)py-=15;if(in.d==DOWN)py+=15;px=constrain(px,0,305);py=constrain(py,35,210);for(int r=0;r<5;r++)fb.fillRect((millis()/8+r*70)%320,55+r*28,55,12,TFT_BLACK);fb.fillRect(px,py,12,12,TFT_BLACK);if(py<45){score+=100;level++;py=205;}hud("Reach top");}
void dodge(Input in){title("DODGE BLOCKS");if(in.d==LEFT)px-=8;if(in.d==RIGHT)px+=8;if(in.d==UP)py-=8;if(in.d==DOWN)py+=8;px=constrain(px,0,310);py=constrain(py,35,210);int bx=(millis()/5)%320,by=(millis()/7)%210+30;fb.fillRect(px,py,10,10,TFT_BLACK);fb.fillRect(bx,by,14,14,TFT_BLACK);if(abs(bx-px)<12&&abs(by-py)<12)over=true;score=(millis()-started)/100;hud("Avoid blocks");}

String prompt="", reply=""; const char keys[]="ABCDEFGHIJKLMNOPQRSTUVWXYZ";
void terminal(Input in){title("AI TERMINAL"); static int kx=0,ky=0; if(in.longPress){app=-1;return;} if(in.d==LEFT)kx=max(0,kx-1);if(in.d==RIGHT)kx=min(6,kx+1);if(in.d==UP)ky=max(0,ky-1);if(in.d==DOWN)ky=min(4,ky+1); for(int y=0;y<5;y++)for(int x=0;x<7;x++){int i=y*7+x;String q=i<26?String(keys[i]):(i==26?"SP":i==27?"BK":i==28?"CLR":i==29?"SEND":i==30?".":i==31?"?":i==32?"!":i==33?",":"-");fb.drawRect(5+x*45,90+y*24,42,21,TFT_BLACK);text(10+x*45,94+y*24,q,2);}fb.drawRect(5+kx*45,90+ky*24,42,21,TFT_BLACK);text(5,38,"Prompt: "+prompt.substring(max(0,(int)prompt.length()-35)),2);text(5,62,reply.substring(0,45),2); if(in.press){int i=ky*7+kx;if(i<26&&prompt.length()<120)prompt+=keys[i];else if(i==26)prompt+=' ';else if(i==27&&prompt.length())prompt.remove(prompt.length()-1);else if(i==28)prompt="";else if(i==29){reply="AI requests require key"; if(String(WIFI_SSID)=="YOUR_WIFI_NAME"||String(OPENAI_API_KEY)=="YOUR_OPENAI_API_KEY"){reply="Missing WiFi/key in secrets.h";return;} WiFi.begin(WIFI_SSID,WIFI_PASSWORD);uint32_t until=millis()+10000;while(WiFi.status()!=WL_CONNECTED&&millis()<until)delay(20);if(WiFi.status()!=WL_CONNECTED){reply="WiFi timeout";return;} WiFiClientSecure c;c.setInsecure();HTTPClient h;h.setTimeout(15000);if(!h.begin(c,"https://api.openai.com/v1/responses")){reply="HTTPS error";return;}h.addHeader("Content-Type","application/json");h.addHeader("Authorization","Bearer "+String(OPENAI_API_KEY));JsonDocument j;j["model"]="gpt-4.1-mini";j["input"]="Reply in one sentence under 180 characters: "+prompt;String body;serializeJson(j,body);int code=h.POST(body);String out=h.getString();h.end();if(code<200||code>=300){reply="HTTP "+String(code);return;}JsonDocument r;DeserializationError e=deserializeJson(r,out);if(e){reply="JSON error";return;}reply=r["output"][0]["content"][0]["text"].as<String>();if(!reply.length())reply="No text response";}}}
void drawMenu(){title("SCHEMATIK Tiny Game Console");int first=constrain(menu-1,0,12);for(int i=0;i<4;i++){int n=first+i;if(n==menu)fb.drawRect(8,42+i*37,302,31,TFT_BLACK);text(18,48+i*37,String(n+1)+". "+apps[n],2);}text(8,207,first?"^ more":"",2);text(290,207,first<12?"v more":"",2);text(38,222,"UP/DOWN select  BTN start",2);frame();}
void runGame(Input in){if(over){gameOver(apps[app],in);return;}switch(app){case 0:dino(in);break;case 1:snake(in);break;case 2:tetris(in);break;case 3:breakout(in);break;case 4:flappy(in);break;case 5:pong(in);break;case 6:invaders(in);break;case 7:car(in);break;case 8:game2048(in);break;case 9:simon(in);break;case 10:maze(in);break;case 11:lander(in);break;case 12:mines(in);break;case 13:frogger(in);break;case 14:dodge(in);break;case 15:terminal(in);break;}if(app>=0)frame();}
void setup(){Serial.begin(115200);pinMode(JOY_SW,INPUT_PULLUP);pinMode(TFT_BL,OUTPUT);digitalWrite(TFT_BL,HIGH);analogReadResolution(12);analogSetPinAttenuation(JOY_X,ADC_11db);analogSetPinAttenuation(JOY_Y,ADC_11db);long sx=0,sy=0;for(int i=0;i<160;i++){sx+=analogRead(JOY_X);sy+=analogRead(JOY_Y);delay(2);}cx=sx/160;cy=sy/160;tft.init();tft.setRotation(3);fb.setColorDepth(1);fb.createSprite(W,H);randomSeed(esp_random());}
void loop(){Input in=input();if(app<0){if(in.d==UP)menu=max(0,menu-1);if(in.d==DOWN)menu=min(15,menu+1);if(in.press){app=menu;resetGame();}drawMenu();}else runGame(in);delay(8);}