CODEWITHSUNDEEP
imageuser-interfaceunity-game-engine
Tim Cooley
Tim Cooley

Reputation: 759

How to have an image show up if a condition is met in Unity

I have three variable

None, TeamA, TeamB

I am just doing some debugging and would like for an image to appear, depending on which is selected.

Code used to select the crowd. 

public enum crowdOptions {None, TeamA, TeamB};
public static crowdOptions CrowdOptions;

        if(Random.value < .33){
            CrowdOptions = crowdOptions.None;
        } else if (Random.value > .66){
            CrowdOptions = crowdOptions.TeamA;
        } else {
            CrowdOptions = crowdOptions.TeamB;
        }

I know I need to add it below the CrowdOptions, but I am not sure what the code is or how to connect it to the images.

I made UI Image box with a color; None = White, Team A = Red, Team B = Blue.

Here is the answer. I needed to turn off the game object:

        if(Random.value < .33){
            CrowdOptions = crowdOptions.None;
            GameObject.Find("None").GetComponent<Image>().enabled =true;
            GameObject.Find("TeamA").GetComponent<Image>().enabled =false;
            GameObject.Find("TeamB").GetComponent<Image>().enabled =false;
        } else if (Random.value > .66){
            CrowdOptions = crowdOptions.TeamA;
            GameObject.Find("None").GetComponent<Image>().enabled =false;
            GameObject.Find("TeamA").GetComponent<Image>().enabled =true;
            GameObject.Find("TeamB").GetComponent<Image>().enabled =false;
        } else {
            CrowdOptions = crowdOptions.TeamB;
            GameObject.Find("TeamNone").GetComponent<Image>().enabled =false;
            GameObject.Find("TeamA").GetComponent<Image>().enabled =false;
            GameObject.Find("TeamB").GetComponent<Image>().enabled =true;
        }

Then name of the GameObjects (images) were None, TeamA, TeamB

Upvotes: 1

Views: 1028

Answers (1)

Fattie
Fattie

Reputation: 12631

Tim, your simplest approach would just be to "turn the game objects on and off" to make one or the other appear.

Just use SetActive to do this - read the manual or google for literally 1000s long tutorials on this.

I don't know why I'm doing this but here's more code tips

1) Choose a random INTEGER out of three and use that,

2) DON'T call for a random every time! choose it once and use that value. this is a very basic mistake that can lead to huge bugs.

int r = Random.Range(0,3)
// means either 0,1 or 2
// READ MANUAL if you don't understand why

3) When you have to turn "one thing on" like that, a better plan is to TURN THEM ALL OFF, and then TURN ONE ON. It's a more reliable, clear way to program.

void TurnAllOff()
 {
 teamA ... disabled
 teamB ... disabled
 teamC ... disabled
 }

void TurnOnOneRandomItem()
 {
 int r = Random.Range(0,2)
 TurnAllOff()
 if ( r == 0 ) teamA .. enabled
 if ( r == 1 ) teamB .. enabled
 if ( r == 2 ) teamC .. enabled
 }

You get it?

Notice how much easier it is now to, for example, add new values later, and how much easier it is to check your code is right.

Upvotes: 0

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