koobas.hobune.stream
World canvas sprite transform script
Dear gods of Unity, how do I set the 3d position of a sprite on a world-space canvas with a c# script?
The canvas is for a cockpit display and the sprite and it's position changes depending on the mode. There are too many modes for me to have a different canvas for each sprite and I can't just set the position via the editor.
Ideally, I would like to have multiple sprites with different positions on 1 worldspace canvas. Please can you suggest a way of doing this?
How are you going to change the mode. By a UI or GUIbutton or a keyboard switch? I will suggest you with a script according to this.
@RisingDead Via keyboard/joystick switch. The number of sprites would also change depending on the mode.
The Idea is to use arrays in order to change modes.
FIRST CREATE AN EMPTY GAMEOBJECT AND ASSIGN THIS CODE TO THE GAMEOBJECT.
STEP: 1 - Create the amount of sprites you need and group them in empty gameobjects. STEP: 2 - Set the size of the array depending on the number of your modes.
STEP: 3 - Enter the gameobjects in the array.
STEP: 4 - Set the noOfModes int. Depending on your number of modes.
public GameObject[] modes;//Holds all the modes.
public int noOfModes = 4;//Enter the number of modes you need to have in your game.
private int modeNumber = 0;//The current mode to active.
// Use this for initialization
void Start ()
{
modes[1].SetActive(false);//In case we have 4 modes we disable the last three modes leaving the first one active. Or modes[0].
modes[2].SetActive(false);
modes[3].SetActive(false);
}
// Update is called once per frame
void Update()
{
if(Input.GetKeyDown("space"))//Executes the command when the user pressed SPACEBAR.
{
ModeSwitch();
}
}
void ModeSwitch ()
{
modes[modeNumber].SetActive(false);//Disables the current mode.
modeNumber += 1;
if(modeNumber > noOfModes)//If modeNumber exceeds the no. of modes the modeNumber comes back to 0.
{
modeNumber = 0;
}
modes[modeNumber].SetActive(true);//Enables the new mode.
}
If it does not work for you let me know. Hope it helps.
@RisingDead I was using something similar to this where I would instantiate a GameObject, parent it to the screen, set the position add a spriterenderer and a sprite but unfortunately it was too resource intensive. FPS took a massive hit. I have no problem with the modes, it's just rendering images. Is there a way to do this with images ins$$anonymous$$d of sprites (and without instantiating a Gameobject)? I am modelling a lot of the aircraft systems so there are a lot of calcs done before the sprite is rendered. Also how do I show code like you have?
Sorry for the late reply as I was not at home. Images can only be rendered by the canvas not by the Camera. Without instantiating a Gameobject nothing can be done. A sprite or an image cannot exist on it's own beacuse sprite renderers and image renderers are components of a gameobject (like RigidyBody or any script). I will see to the FPS problem you are facing. When you try to add a comment or reply you will see a toolbar appears on the top. One of them has a 01010 icon Press that to show your code.
