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	snap to grid in game

spicymilk Registered User
Quote
2025-02-12 01:07:18

Is there a script for in game snapping to a gri like say if i was trying to put a box anywhere in a room it coul snap onto a grid

thankyou

okeoke Registered User
Quote
2025-02-12 10:50:16

I once made a level editor for my game. Code:

 
   this.editorDetectorNode = ccbGetSceneNodeFromName('editor__detector'); 
    this.cellSize = 10;
    //...
    const detectorPos = ccbGetSceneNodeProperty(this.editorDetectorNode, 'PositionAbs'); 
    const blockPos = new vector3d( 
        Math.round(detectorPos.x / this.cellSize) * this.cellSize, 
        Math.round(detectorPos.y / this.cellSize) * this.cellSize, 
        Math.round(detectorPos.z / this.cellSize) * this.cellSize
    );
 
    ccbSetSceneNodeProperty(this.currentBlock, 'Position', blockPos);

Basically, it snaps cubes to 10x10x10 grid. editor__detector is a node which is attached to a free floating camera. It is used to place objects relative to it. First I get its position, and then update each position component, so it is rounded to tens (this.cellSize = 10);

For example, if x pos === 23.5:

23.5 / 10 = 2.35;
round(2.35) = 2;
2 * 10 = 20;

Component x is updated from 23.5 to 23. If initial value was 2.5 it will be rounded to 30 the same way.

You can regulate the grid side with different cellSize value. If it's 0.1 for example, and x position is 23.56

23.56 / 0.1 = 235.6;
round(235.6) = 236;
236 * 0.1 = 23.6;

Hope, you got the idea.

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