I’m following a tutorial on YouTube to create a vertical sphere trace that should stay in front of the character, per part of the tutorial at the bottom of this post.
Now, I have gone over everything and triple-checked my code. It matches his exactly. For some reason, it is always staying a few units further than the character on the X axis.
Now, I am trying to re-think the code, and make it work for me. I’ve gone through a couple of YouTube videos explaining the basics of Vectors, but none have really explained how to combine/add/multiply them. Even one titled “Vector math”.
So, I’m attempting to get the player’s location for the Z axis value, then add it to the player’s forward vector (X and Y axis values) to get the direction that the sphere trace should be from the character. Adding these should put the sphere trace in front of the character, and at it’s Z height, right?
So the green pins are floats, what you did with the plus node (red box) was add the player’s Z height, with the forward vector’s X + 50 and y + 50. This results in a single float being passed into a vector. So essentially you just added these floats together to one single number, and changed it to a vector. Basically (example number) 50+51+51 = 152 → Vector (x 152,y 152,z 152) isn’t going to output a proper Vector.
Now take a look at your correct solution, it’s pins are yellow, which means it’s inputting and outputting a Vector. So instead of trying to add the floats together, you’re assigning the variables to the correct X, Y, and Z in the vector, but that’s handled natively by the data structure. Adding Actor location to a multiplied Actor forward vector effectively does this X+X,Y+Y,Z+Z.
