I made a 10x10 ws2812b led matrix and copied code for snake and it works fine, except when the food is in the top row second from right it wont eat it.
Here is the library: GitHub - emanuelk/Snake-Game-Library-for-Arduino: with this library you can run a snake game on an Arduino (mega 2560)
Here is the code itself:
#include <Snake.h>
#include "FastLED.h"
#define NUM_LEDS 100
#define LEDS_PER_ROW 10
#define DATA_PIN 2
Snake snakeGame(10,10,10);//initialize the snake field with x=15, y=9, delay=10 ticks
CRGB leds[NUM_LEDS];
void setup() {
snakeGame.setBodyColor(255,0,255);//optionally set the color of the snakeparts
snakeGame.setFoodColor(0,60,125);//optionally set the color of the food
snakeGame.setHeadColor(225,20,60);//optionally set the color of the snakeparts
delay(2000);
FastLED.addLeds<WS2812, DATA_PIN, GRB>(leds, NUM_LEDS);
Serial.begin(9600);
}
byte setPixel(byte x, byte y, byte r, byte g, byte b)
{
byte ledID = NUM_LEDS - ((y + 1) * LEDS_PER_ROW) - x - 1 ;
leds[ledID].setRGB(r,g,b);
return ledID;
}
void changeRGBtoGBR()
{
for(int whiteLed = 0; whiteLed < NUM_LEDS; whiteLed++)
{
leds[whiteLed].setRGB(leds[whiteLed].g , leds[whiteLed].b, leds[whiteLed].r);
}
}
void clearScreen()
{
for(int whiteLed = 0; whiteLed < NUM_LEDS; whiteLed++)
{
leds[whiteLed].setRGB( 3, 3, 3);
}
}
void loop()
{
Snake::pixel* snakeLimbs=snakeGame.getSnakeLimbs();//this needs to be updated every frame
Snake::pixel* snakeFood = snakeGame.getFoodPositions();//this needs to be updated every frame
clearScreen();
setPixel(snakeFood[0].posX,8-snakeFood[0].posY,snakeFood[0].pixelColor.r,snakeFood[0].pixelColor.g,snakeFood[0].pixelColor.b); // display the food
for(int i=0; i<snakeGame.getSnakeLenght(); i++)
{
//display the snake, my setpixel method has x=0, y=0 at the top left, but the library has it at bottom left, so I invert the Y-Axis:
setPixel(snakeLimbs[i].posX,8-snakeLimbs[i].posY,snakeLimbs[i].pixelColor.r,snakeLimbs[i].pixelColor.g,snakeLimbs[i].pixelColor.b);
}
FastLED.show();
snakeGame.tick();//main loop for the snake library
if(snakeGame.wasGameReset())// if the snake bit itself or the wall, flash a little
{
for(int i=0; i<30; i++)
{
changeRGBtoGBR();
FastLED.show();
delay(40);
}
}
else
delay(30);
}
byte incomingByte=0;
void serialEvent() {
while (Serial.available())
{
incomingByte = Serial.read();
Serial.write(incomingByte);
}
switch(incomingByte)
{
case 'a':
snakeGame.goLeft(); //snake will go left on the next move
break;
case 'd':
snakeGame.goRight(); //snake will go right on the next move
break;
case 's':
snakeGame.goDown(); //snake will go down on the next move
break;
case 'w':
snakeGame.goUp(); //snake will go up on the next move
break;
}
}
