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Macrogatchi : The Next Tamagotchi Evolution

About the project

Tamagotchis are super fun and nostalgic but I want to know what is possible with the advances in electronics since they were first produced.

Project info

Difficulty: Easy

Platforms: DFRobot, Espressif

Estimated time: 5 hours

License: GNU General Public License, version 3 or later (GPL3+)

Items used in this project

Hardware components

	DFRobot Gravity:Digital Push Button (Yellow)	x 3
	ILI9488 lcd display	x 1
	Espressif ESP32 Development Board - Developer Edition	x 1

Software apps and online services

Arduino IDE

Story

I created this project for my YouTube channel basically it is an upgraded and improved version of the classic Tamagotchi toy from the 90s and 2000s. In my video I discuss what the goals for the final device are and the parts and pieces needed to make it. I also briefly discuss the code. In order to get this project working you will also need to upload some images to the esp32 internal memory the files to upload and instructions on how to do so can be found in the git repository at https://gitlab.com/makeitforless/macrogatchi

Schematics, diagrams and documents

schematic

Wiring diagram for the device

Code

pitches.h

/************************************************* * Public Constants *************************************************/ #define NOTE_B0 31 #define NOTE_C1 33 #define NOTE_CS1 35 #define NOTE_D1 37 #define NOTE_DS1 39 #define NOTE_E1 41 #define NOTE_F1 44 #define NOTE_FS1 46 #define NOTE_G1 49 #define NOTE_GS1 52 #define NOTE_A1 55 #define NOTE_AS1 58 #define NOTE_B1 62 #define NOTE_C2 65 #define NOTE_CS2 69 #define NOTE_D2 73 #define NOTE_DS2 78 #define NOTE_E2 82 #define NOTE_F2 87 #define NOTE_FS2 93 #define NOTE_G2 98 #define NOTE_GS2 104 #define NOTE_A2 110 #define NOTE_AS2 117 #define NOTE_B2 123 #define NOTE_C3 131 #define NOTE_CS3 139 #define NOTE_D3 147 #define NOTE_DS3 156 #define NOTE_E3 165 #define NOTE_F3 175 #define NOTE_FS3 185 #define NOTE_G3 196 #define NOTE_GS3 208 #define NOTE_A3 220 #define NOTE_AS3 233 #define NOTE_B3 247 #define NOTE_C4 262 #define NOTE_CS4 277 #define NOTE_D4 294 #define NOTE_DS4 311 #define NOTE_E4 330 #define NOTE_F4 349 #define NOTE_FS4 370 #define NOTE_G4 392 #define NOTE_GS4 415 #define NOTE_A4 440 #define NOTE_AS4 466 #define NOTE_B4 494 #define NOTE_C5 523 #define NOTE_CS5 554 #define NOTE_D5 587 #define NOTE_DS5 622 #define NOTE_E5 659 #define NOTE_F5 698 #define NOTE_FS5 740 #define NOTE_G5 784 #define NOTE_GS5 831 #define NOTE_A5 880 #define NOTE_AS5 932 #define NOTE_B5 988 #define NOTE_C6 1047 #define NOTE_CS6 1109 #define NOTE_D6 1175 #define NOTE_DS6 1245 #define NOTE_E6 1319 #define NOTE_F6 1397 #define NOTE_FS6 1480 #define NOTE_G6 1568 #define NOTE_GS6 1661 #define NOTE_A6 1760 #define NOTE_AS6 1865 #define NOTE_B6 1976 #define NOTE_C7 2093 #define NOTE_CS7 2217 #define NOTE_D7 2349 #define NOTE_DS7 2489 #define NOTE_E7 2637 #define NOTE_F7 2794 #define NOTE_FS7 2960 #define NOTE_G7 3136 #define NOTE_GS7 3322 #define NOTE_A7 3520 #define NOTE_AS7 3729 #define NOTE_B7 3951 #define NOTE_C8 4186 #define NOTE_CS8 4435 #define NOTE_D8 4699 #define NOTE_DS8 4978

macrogatchi.ino

//includes #include <LittleFS.h> #define FileSys LittleFS #include <PNGdec.h> #include "pitches.h" #include "SPI.h" #include <TFT_eSPI.h> // Hardware-specific library // #include <algorithm> //defines #define MAX_IMAGE_WIDTH 320 //#define DEBUG #define BUTTON_PIN_1 20 #define BUTTON_PIN_2 21 #define BUTTON_PIN_3 22 #define BUZZER_PIN 5 #define WIDTH 200 #define HEIGHT 200 //glob vars int16_t xpos = 0; int16_t ypos = 0; PNG png; File pngfile; TFT_eSPI tft = TFT_eSPI(); // Invoke custom library TFT_eSprite animal = TFT_eSprite(&tft); // Declare Sprite object "spr" with pointer to "tft" object enum moods{ HAPPY, SAD, ANGRY, HUNGRY, SLEEPY, DEAD }; struct food{ const char* name; const char* fullImage; const char* oneBiteImage; const char* twoBiteImage; uint8_t value; }; uint16_t* drawImageAtLocation(const char* fileName, int xPos, int yPos){ File file = LittleFS.open(fileName, "r"); String strname = file.name(); uint16_t *imageSizes = new uint16_t[2]; strname = "/" + strname; #ifdef DEBUG Serial.println(file.name()); #endif // If it is not a directory and filename ends in .png then load it if (!file.isDirectory() && strname.endsWith(".png")) { xpos = xPos; ypos = yPos; int16_t rc = png.open(strname.c_str(), pngOpen, pngClose, pngRead, pngSeek, pngDraw); if (rc == PNG_SUCCESS) { imageSizes[0] = png.getWidth(); imageSizes[1] = png.getHeight(); tft.startWrite(); rc = png.decode(NULL, 0); png.close(); tft.endWrite(); }else{ #ifdef DEBUG Serial.println(rc); #endif } } #ifdef DEBUG Serial.println("returning"); #endif return imageSizes; } uint8_t addNoOverflow(uint8_t lhs, uint8_t rhs){ return lhs + std::min((uint8_t)(255-lhs),rhs); } uint8_t subtractNoUnderflow(uint8_t lhs, uint8_t rhs){ return lhs - std::min(lhs,rhs); } class creature{ public: void moveCreature(){ lastX = xPos; lastY = yPos; if(xPos + lastImageWidth + xVel > 320) xVel = -1; if(xPos + xVel < 0) xVel = 1; if(yPos + lastImageHeight + yVel > 405) yVel = -1; if(yPos + yVel < 75) yVel = 1; xPos += xVel; yPos += yVel; } void drawCreature(const char * image){ uint16_t *tempSizes = drawImageAtLocation(image,xPos,yPos); lastImageWidth = tempSizes[0]; lastImageHeight = tempSizes[1]; delete tempSizes; } void feedCreature(food meal){ drawImageAtLocation(meal.fullImage,xPos - 50, yPos + 50); drawCreature("/eatOpen.png"); tone(BUZZER_PIN,NOTE_B2,200); delay(200); drawImageAtLocation(meal.oneBiteImage,xPos - 50, yPos + 50); drawCreature("/eatClose.png"); tone(BUZZER_PIN,NOTE_C5,200); delay(200); drawCreature("/eatOpen.png"); tone(BUZZER_PIN,NOTE_B2,200); delay(200); // tft.fillRect(xPos - 50, yPos + 50,50,50,TFT_BLUE); drawImageAtLocation(meal.twoBiteImage,xPos - 50, yPos + 50); drawCreature("/eatClose.png"); tone(BUZZER_PIN,NOTE_C5,200); delay(200); drawImageAtLocation("/emptyTaco.png",xPos - 50, yPos + 50); hunger = subtractNoUnderflow(hunger,meal.value); } void updateCreature(){ if(millis() - lifeTickCounter > 1000 * 60){ lifeTickCounter = millis(); hunger = addNoOverflow(hunger,5); cleanliness = subtractNoUnderflow(cleanliness,5); if(mood == moods::SLEEPY){ sleepiness = subtractNoUnderflow(sleepiness,1); }else{ sleepiness = addNoOverflow(sleepiness,5); } bladder = addNoOverflow(bladder,5); if(hunger > 25 | cleanliness < 150 | bladder > 50){ happiness = subtractNoUnderflow(happiness,5); } if(happiness > 150){ mood = moods::HAPPY; }else{ mood = moods::ANGRY; } if(sleepiness > 25){ mood = moods::SLEEPY; } if(hunger > 50){ mood = moods::HUNGRY; } } tft.fillRect(0,0,100,50,TFT_BLUE); tft.setCursor(0,0); tft.print("Happiness: "); tft.println(happiness); tft.print("Hunger: "); tft.println(hunger); tft.print("Sleepiness: "); tft.println(sleepiness); drawCreature(images[mood]); } private: long long lifeTickCounter = 0; moods mood = moods::HAPPY; uint8_t hunger = 0; uint8_t happiness = 255; uint8_t cleanliness = 255; uint8_t bladder = 0; uint8_t sleepiness = 0; int lastX = 110; int lastY = 200; int xPos = lastX; int yPos = lastY; int xVel = -1; int yVel = 1; uint16_t lastImageWidth = 0; uint16_t lastImageHeight = 0; const char *images[5] = {"/happy.png","/sad.png","/neutral.png","/eatOpen.png","/sleep.png"}; }; creature g; food taco; //==================================================================================== // Setup //==================================================================================== void setup() { #ifdef DEBUG Serial.begin(9600); pinMode(15,OUTPUT); digitalWrite(15,HIGH); while(!Serial); digitalWrite(15,LOW); delay(1000); Serial.println("\n\n Using the PNGdec library"); #endif //Setup inputs pinMode(BUTTON_PIN_1,INPUT_PULLUP); // Initialise FS if (!FileSys.begin()) { #ifdef DEBUG Serial.println("LittleFS initialisation failed!"); #endif while (1) yield(); // Stay here twiddling thumbs waiting } // Initialise the TFT tft.begin(); tft.fillScreen(TFT_BLUE); #ifdef DEBUG Serial.println("\r\nInitialisation done."); #endif taco.name = "taco"; taco.value = 10; taco.fullImage = "/taco.png"; taco.oneBiteImage = "/tacoOneBite.png"; taco.twoBiteImage = "/tacoTwoBite.png"; drawImageAtLocation("/background.png",0,0); } //==================================================================================== // Loop //==================================================================================== void loop() { // drawImageAtLocation("/background.png",0,0); // tft.fillScreen(TFT_BLUE); // tft.fillRect(0,480/2,320,480/2,TFT_BLUE); g.updateCreature(); if(!digitalRead(BUTTON_PIN_1)){ g.feedCreature(taco); } g.moveCreature(); // delay(500); // drawImageAtLocation("/eatOpen.png",0,0); // drawImageAtLocation("/tacoOneBite.png",50,200); // drawImageAtLocation("/eatClose.png",0,0); // // drawImageAtLocation("/eatOpen.png",0,0); //// tft.fillRect(50,200,100,250,TFT_BLACK); // drawImageAtLocation("/tacoTwoBite.png",50,200); // drawImageAtLocation("/eatClose.png",0,0); } //helper funcs void * pngOpen(const char *filename, int32_t *size) { #ifdef DEBUG Serial.printf("Attempting to open %s\n", filename); #endif pngfile = FileSys.open(filename, "r"); *size = pngfile.size(); return &pngfile; } void pngClose(void *handle) { File pngfile = *((File*)handle); if (pngfile) pngfile.close(); } int32_t pngRead(PNGFILE *page, uint8_t *buffer, int32_t length) { if (!pngfile) return 0; page = page; // Avoid warning return pngfile.read(buffer, length); } int32_t pngSeek(PNGFILE *page, int32_t position) { if (!pngfile) return 0; page = page; // Avoid warning return pngfile.seek(position); } //=========================================v========================================== // pngDraw //==================================================================================== // This next function will be called during decoding of the png file to // render each image line to the TFT. If you use a different TFT library // you will need to adapt this function to suit. // Callback function to draw pixels to the display void pngDraw(PNGDRAW *pDraw) { uint16_t lineBuffer[MAX_IMAGE_WIDTH]; uint8_t maskBuffer[1 + MAX_IMAGE_WIDTH / 8]; png.getLineAsRGB565(pDraw, lineBuffer, PNG_RGB565_BIG_ENDIAN, 0xffffffff); if (png.getAlphaMask(pDraw, maskBuffer, 255)) { tft.pushMaskedImage(xpos, ypos + pDraw->y, pDraw->iWidth, 1, lineBuffer, maskBuffer); }else{ tft.pushImage(xpos, ypos + pDraw->y, pDraw->iWidth, 1, lineBuffer); } }

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Macrogatchi : The Next Tamagotchi Evolution

About the project

Project info