I need to detect if a object is hiting a obstacle from X axis or Y axis. The motion works with a Vector that stores 2 variables

Question

the object moves in both axis x and y, but i need to figure if it hits the goal coming mostly from X OR Y, so it triggers different reactions.
vector(x,y)
-x is left to right
x is right to left
-y is top to bottom
y is bottom to top

Answer 1

don't know about the framework you are using, but if its a game framework it will have collisions by itself, wich you pass 2 objects. If not, you must check object1 x position with object2 x position (and Y also). Try to check a few numbers less or more, because the x or y represent usually the center, and not the borders of the object/graphics.

Answer 2

im using p5.js which is based on Processing.
the thing is, it doesn't have a collision class, i succeeded in detecting colision but cant figure out how to give different reactions from different angles of collision, i think i need to write a algorithm for it

Answer 3

if u can, and have the time, check my code, blubot, thanks a lot

Answer 4

thanks uran, that i got working, but how do i figure where is the object coming from?

Answer 5

you can do something like this

if (object1.x == (object2.x - object2.width/2) && object1.y == (object2.y - object2.height/2)) {
//Collision happens.
}

Answer 6

try something like this from the sides

if ((object2.x - object2.width/2) == (object1.x + object1.width/2))
{
// from the left
}
else if ((object2.x + object2.width/2) == (object1.x - object1.width/2))
{
// from the right
}