Collision with enemies

821

I create multiple enemiesby doing:

createEnemies = function()
  enemy = object
    //enemy's stuff
  end
  enemies.push(enemy)
end

I also want them to move but they go through each other...

How can i avoid it?

KimsGames

first you need to know how to check for collisions. You could use something like this:


check_collision = function(x1, y1, x2, y2) 

  if x1 > x2 + tile_size - 1 then return false end 

  if x1 + tile_size - 1 < x2 then return false end 

  if y1 > y2 + tile_size - 1 then return false end 

  if y1 + tile_size - 1 < y2 then return false end 

  return true 

end

So you want to check if the new location doesn't overlap with all the other enemies (with a for-loop). If you don't have a crazy amount of enemies, this works just fine.

lollocenne

Thanks!

But i don't understand how i should use the function

i try

for e1 in enemies
    for e2 in enemies
      if e1 != e2 then
        if not checkCollision(e1.x, e1.y, e2.x, e2.y) then
          //enemy move
        end
      end
    end
  end

But it don't work. What am i doing wrong?

Loginus

See how I did it. This method is called AABB collision detection .

https://microstudio.dev/i/Loginus/collision/

lollocenne

Thanks everyone but i almost found a way

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