Place item at Raycast hit?

[KyleStank]

The title pretty much explains my problem. Currently, the object is being placed on the ground, but not at the right position. When I click and the player places an object down on the ground, the item is stuck on the ground. I know that this is because that the X, Y, and Z’s of the hit is exactly where the point is.

But how do I make it where if the object is going to be placed on the ground, then raise? Or, if the object is going to be placed on a wall, subtract OR add to the X or Z position to make up for the difference?

Here is the line the sets the position:

currentHeldObject.transform.position = new Vector3(hit.point.x, hit.point.y + renderer.bounds.extents.y, hit.point.z); //Sets held object's pre-place position

You’ll notice that I already try to raise the object in the Y position. This works for the ground, but when the object gets placed on a wall, it is raised too much. How can I fix this? It is confusing me lol.

[Kiwasi]

I would personally cheat and manually assign each object a root position to use for instantiating.

[Kazen]

I would probably cheat too. If you don’t want to cheat, maybe you could check the normal of the raycasthit, use the dot-product against world-up and multiply by that. Something like:

float upDot = Vector3.Dot(hit.normal, Vector3.up);
currentHeldObject.transform.position = new Vector3(hit.point.x, hit.point.y + renderer.bounds.extents.y * upDot, hit.point.z);

[KyleStank]

@Kiwasi

I would personally cheat and manually assign each object a root position to use for instantiating.

Dang… I had this idea at the back of my mind, but the reason I didn’t want to do this is because I plan on having a lot of objects that you can pick up through out the game.

I can just attach a script to the “Obtainable” objects, and inside that script, include a root position. But then I run into another problem. I won’t know if the object’s position needs to be increased in the X, Y, or Z position.

I wish this was easier, but it appears not to be,

@Kazen

I would probably cheat too. If you don’t want to cheat, maybe you could check the normal of the raycasthit, use the dot-product against world-up and multiply by that. Something like:

float upDot = Vector3.Dot(hit.normal, Vector3.up);
currentHeldObject.transform.position = new Vector3(hit.point.x, hit.point.y + renderer.bounds.extents.y * upDot, hit.point.z);

This gave me the same exact effect I had earlier lol. Thanks though.

[Kiwasi]

Treat the root position as an offset and just add it to the raycast hit position.

[Kazen]

@KyleStank

Dang… I had this idea at the back of my mind, but the reason I didn’t want to do this is because I plan on having a lot of objects that you can pick up through out the game.

I can just attach a script to the “Obtainable” objects, and inside that script, include a root position. But then I run into another problem. I won’t know if the object’s position needs to be increased in the X, Y, or Z position.

I wish this was easier, but it appears not to be,

This gave me the same exact effect I had earlier lol. Thanks though.

Yes, it should give the same effect when doing it towards the ground/roofs, but it shouldn’t recieve any upwards offset when shooting against walls. You can apply the same thing for your x/z displacement, but it’s hard to get a grasp on the result you want. Cheating is probably easiest.

[KyleStank]

@Kazen

Yes, it should give the same effect when doing it towards the ground/roofs, but it shouldn’t recieve any upwards offset when shooting against walls. You can apply the same thing for your x/z displacement, but it’s hard to get a grasp on the result you want. Cheating is probably easiest.

Omg thank you! This was so simple. Cheating actually isn’t easiest. I just needed three Vector3.Dot variables, and it works! It is a little rough, but it doesn’t need to be perfect. Thank you man, I really appreciate the help.