Game with 16x2 LCD screen - collision detection

Projects General Guidance
1

Hi! I'm working on a final project for one of my classes and decided to make a simple platforming game. However, I'm having trouble with the collision detection of blocks. Right now the player controlled sprite just gets printed in the same space as the block.

#include <LiquidCrystal.h>

LiquidCrystal lcd(12, 11, 5, 4, 3, 2); // RS, E, D4, D5, D6, D7

byte AMONGUS[] = 
{
  B01110,
  B10001,
  B10111,
  B10101,
  B10111,
  B10001,
  B10101,
  B11011
};


byte Block[]
{
  B11111,
  B11111,
  B11111,
  B11111,
  B11111,
  B11111,
  B11111,
  B11111
};


int joyPosY;
int joyPosX;

int col;


void setup() 
{
  // Specify the LCD's number of columns and rows:
  lcd.begin(16, 2);
  
  // Create new characters:
  lcd.createChar(0, AMONGUS);
  
  // Clears the LCD screen:
  lcd.clear();

  pinMode(A0, INPUT); //sets pin A0 to input info
  pinMode(A1, INPUT);

  Serial.begin(9600);
}

void bottomRowMove()
{
  if(joyPosX >= 400)
  {
    lcd.clear();
    col++;
  }
  else if(joyPosX <= 300)
  {
    lcd.clear();
    if(col > 0)
    {
      col--;
    }
    else
    {
      col = 0;
    }
  }
}

void upperRowMove()
{
  if(joyPosX >= 520)
  {
    lcd.clear();
    if(col < 16)
    {
      col++;
    }
    else
    {
      col = 15;
    }
  }
  else if(joyPosX <= 300)
  {
    lcd.clear();
    if(col > 0)
    {
      col--;
    }
    else
    {
      col = 0;
    }
  }
}



void placeBlocks()
{
  lcd.createChar(1, Block);

  lcd.setCursor(4,1);
  lcd.write(byte(1));
  
  lcd.setCursor(7, 0);
  lcd.write(byte(1));
}

void loop() 
{
  joyPosY = analogRead(A0);
  joyPosX = analogRead(A1);

  Serial.print("X Pos: ");
  Serial.println(joyPosX);
  Serial.print("Y Pos: ");
  Serial.println(joyPosY);

  lcd.clear();
  // Print all the custom characters:
  lcd.setCursor(col, 1);
  lcd.write(byte(0));
  
  placeBlocks();

  while(joyPosY >= 900)
  {
    lcd.clear();

    joyPosY = analogRead(A0);
    joyPosX = analogRead(A1);
    placeBlocks();
    lcd.setCursor(col, 0);
    lcd.write(byte(0));
    delay(100);

    upperRowMove();
  }

  delay(100);
  bottomRowMove();
}
2

Take a minute, read and follow this link: How to get the best out of this forum - Using Arduino / Project Guidance - Arduino Forum

What are You talking about? Collision detector? Helpers are not standing behind You looking over Your shoulder.
Schematics, pictures, links to datasheets. Please upgrade Your post.

3

What do you expect to happen when there is a collision?

Looks like you always put the blocks in the same place... col/row 4,1 and 7,0... so in the routines that are moving the sprite you need to check whether the col/row you just calculated is the same as where the blocks are... then do whatever.