I have been running into this issue for a while now and can't seem to figure it out.
I have a player object. I also have an enemy objects that I am spawning through a prefab. I want the enemy objects to be able to access information about the player's script such as how much health it has left. how can I accomplish this in C#?
There are many many ways in unity for objects to access each other's components, scripts, functions and variables. Start reading about it at these two manual pages:
Also see this answer which gives more detail about creating "dragged references":
In your particular case, if you only have a single "Player" at one time, you could use "FindObjectOfType" to find the player script instance at runtime, when the enemy is created. FindObjectOfType is ideal when you know the script you're looking for is the only one of its kind in your scene. It's relatively slow to execute, so we store the reference in a variable in Start() and just use the variable later.
I'm assuming you have a script on your player, and for this example I'm going to assume it's called "PlayerScript". Whatever it's called, you need to use the exact script name where I write "PlayerScript":
This would be in your enemy script:
You can then access public variables on the player's script, from inside your enemy script, using code like this:
And call functions on the player's script like this:
You can also access the Game Object to which the player script is attached:
And other built-in component references:
As well as any other component type which doesn't have a built-in reference:
(where "SomeOtherComponent" is the name of another component or script)
If there is more than one object of a certain type, and you want to get references to all of them, you can use the very similarly named "FindObjectsOfType" function. This differs in that it returns an Array of the type of object that you specify. For example, if you have 10 enemies in your scene, each with "EnemyScript" attached, you could use:
You now have an array containing references to all the current instances of the enemy scripts. You can then iterate through them using a foreach loop:
What you want to learn about is public properties in C#, getters and setters.
answered Feb 15 '10 at 07:55 AM