Make something to appear at random

[omer_ahmed_tabarik]

Hello!I am into developing a game. I started from scratch and did not know much of scripting but I started learning now. For the game that I'm making I want to make somethings appear at random when the sprite moves on the map.I figured this one out in PHP but in this language I can't.Please click here to see that map where the sprite moves, I uploaded and made one for just to know how to appear them, this one is just not from the game.Map test linkPlease help me. Thanks in advance.

[boen_robot]

Use Math.random() to get a random number betwen 0 and 1. Base everything on that.

[omer_ahmed_tabarik]

Ok, thanks for trying me to help. I tried using that but could not. In php there is likefor example for my game I would use$chance=rand(1,5)if (chance=2 && fight_chance=="Thief")something like this but by using the command you mentioned, I'm having problems, please help me on that.

[Kingy]

What does your code look like?

[Jesdisciple]

We do need to know your problem to fix it, but I think I understand it. The JS equivalent to your PHP is...

var chance=Math.floor(Math.random() * 5) + 1;if (chance==2 && fight_chance=="Thief")

Math.random() - a number (could be a fraction) greater than or equal to 0 and less than 1 (0 <= x < 1)Math.random() * 5 - a number (could be a fraction) greater than or equal to 0 and less than 5 (0 <= x < 5)Math.floor(Math.random() * 5) - an integer (not a fraction) greater than or equal to 0 and less than 5 (0 <= x < 5)Math.floor(Math.random() * 5) + 1 - an integer (not a fraction) greater than or equal to 1 and less than 6 (1 <= x < 6)

[omer_ahmed_tabarik]

Ok, seriously that was quite helpful and I think I was able to convert it myself. Now can we make it choose something randomly, like a string?for examplerand(theif,ogre)while their and ogre have their own types, like in an array?Thanks for the help and one last thing. Can I do this I mean, round off the fraction like if it is 0.423424324234 to something like 0 or 1?Got this one

[boen_robot]

Ok, seriously that was quite helpful and I think I was able to convert it myself. Now can we make it choose something randomly, like a string?for examplerand(theif,ogre)while their and ogre have their own types, like in an array?Thanks for the help and one last thing. Can I do this I mean, round off the fraction like if it is 0.423424324234 to something like 0 or 1?Got this one

Like you said, put them in a numeric array. Then, choose a number with the method suggested above, and select the string at this index.

[omer_ahmed_tabarik]

I tried, but did not work for me. Another query has arisen now.Can I set a start point, other than 0. I mean like the number is between 0 to 6 or 0 to 1000. If I want it to be between 8 and 15, let's just say, than how can I do that?

[Jesdisciple]

Set both the range and the offset to 8.

var chance=Math.floor(Math.random() * 8) + 8;

(8 <= x < 16)Or you could simplify the algorithm so it's PHP-esque:

function rand(start, end){	return Math.floor(Math.random() * (end - start + 1)) + start;}

rand(8, 15) = Math.floor(Math.random() * (15 - 8 + 1)) + 8 = Math.floor(Math.random() * (7 + 1)) + 8 = Math.floor(Math.random() * 8) + 8

[omer_ahmed_tabarik]

Thanks for the help. I just have one more question regarding it.Well, the sprite on the map moves. So, I want to change the chance everytime. It means, that if it moves up, down, left and right, than for every move there should be a chance.I tried doing it with two functions but is not working at the moment, please help me.First I made em appear randomly, but I noticed it needed refreshing everytime. I dug a little deeper and tried eval function on chance, does not seem to work at the moment.