how to create a block placement system like in Solomon's Key

The easiest way to explain is to show you a video of it being used in a old NES game

Basically i want to create a grid system that when the players hits a button it creates ablock in the closest grid position. This is for a 2d platformer.

 

Hey man! I've been working on a prototype for your problem, it can serve you as a starting point maybe!
It looks like this



Controllers:

• Left Arrow to go left
• Right arrow to go right
• Up arrow to jump
• Space to place blocks

It's a basic character controller with a "magic stick" attached as a child object and a "block dispenser". The block dispensers is in charge of instantiating the blocks in the correct position. All the sprites are set to 128 px per unit so I can easily place the tiles at absolute positions. If the block dispenser is at x=1.34 y=1.46 the dispenser rounds up to 1,1 and places the object in that position.

Code (CSharp):

1. if (Input.GetKeyDown(KeyCode.Space))
2. {
3.             if(hit.collider == null)
4.                 if (block){
5.                     Vector2 position = new Vector2(Mathf.RoundToInt(gameObject.transform.position.x), Mathf.RoundToInt(gameObject.transform.position.y));
6.                     Instantiate(block, position, Quaternion.identity);
7.                 }
8. }

Since every tile is 128x128 there's no overlapping adn every tile fits perfectly


I used kenney assets, you can clone it from my github and use it however you want.

Hope this helps!

 

thats fantastic, thank you!