In this mini Tutorial you will learn how to use Random class in C#, so let\u2019s start with essentials for example let\u2019s place some cubes in random positions into space.<\/p>\n
1.Just Create a new empty project, name it how you want to. File->New Project.
\n2.Create a cube. GameObject->Create Other->Cube.
\n-by drag\u2019n\u2019droping the cube into Assets folder we will have a prefab of this cube.After that delete the cube.
\nSo this is our experimental cube:<\/p>\n
– we will need a public variable of type GameObject for the prefab of the cube. Your script should have this:<\/p>\n This is the core of lesson, this function generates every time a new vector.Inside this function we can see that there are 3 variables of type int x,y and z and they are generated by itself individually using next method Random.Range(min,max); where min <= random value > max. <\/p>\n Next step is to place the cubes, we will use for this a for loop and the function Instantiate for placing game objects into the scene:<\/p>\n So the function PlaceCubes() will place a number of cubes equal with our variable numberOfCubes.<\/p>\n How we can see in Instantiate function we need to put next parameters: Full source code download:<\/strong> You can contact me on mail : globaliviu(at)mail.ru<\/p>\n![\"random_tutorial_ss1\"](\"https:\/\/i0.wp.com\/unitycoder.com\/blog\/wp-content\/uploads\/2014\/08\/random_tutorial_ss1.jpg\")
<\/a>(click image for full size)
\n3.Create C# script and name it Generator.
\n4.Drag\u2019n\u2019Drop Generator script on the Main Camera object.
\n5.Now open Generator script and edit it like i did:<\/p>\n
\n– two variables of type int to define minimal and maximum allowed distances.
\n– and one variable to define how much cubes we want to place in the space.<\/p>\n<\/a>(click image for full size)<\/p>\n\r\n\r\nVector3 GeneratedPosition()\r\n{\r\n int x,y,z;\r\n x = Random.Range(min,max);\r\n y = Random.Range(min,max);\r\nz = Random.Range(min,max);\r\n return new Vector3(x,y,z);\r\n}\r\n\r\n<\/pre>\n
\n*Note: So if min = 0 and max = 100 random value can be {0,1,2,3,4\u2026\u2026..97,98,99}.! Without 100.<\/p>\n\r\nvoid PlaceCubes()\r\n{\r\n\u00a0 for(int i = 0; i < numberOfCubes; i++)\r\n\u00a0 {\r\n\u00a0 \u00a0\u00a0 \u00a0\u00a0 Instantiate(cube, GeneratedPosition(), Quaternion.identity);\r\n\u00a0 }\r\n}\r\n\r\n<\/pre>\n
\n-the object of type GameObject;
\n-the position of type Vector3;
\n-the rotation of type Quaternion;
\nGeneral form : Instantiate(GameObject gameObject,Vector3 position, Quaternion rotation);
\n6.Now save script by pressing Ctrl + S and got o the Unity Editor.
\n7.Click on the Main Camera object in the Hierarchy (if you forgot to assign the script to the camera do it!)
\n8. Put any values in the Inspector, something like this:
\n<\/a>(click image for full size)
\n9.Click Play and you will see this (depends on your values)
\n<\/a>(click image for full size)
\nEvery time you will see something different.This is the fun of randomization that Unity and scripting can ofer to your game.
\nRandom Class can offer you more possibilities then just randomizating an integer,for example you there are functions that will help you to get a random point inside a circle, inside a sphere etc. if you need to visit great unity documentation:
\nhttp:\/\/docs.unity3d.com\/ScriptReference\/Random.html<\/a><\/p>\n
\n https:\/\/dl.dropboxusercontent.com\/u\/94477658\/Tutorial_1_Random_by_Liviu%20Globa\/Generator.cs<\/a><\/p>\n