Randomly Generating Enemy Stats Depending on Game State [closed] - objective-c

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In my game, I want that, the more the player is playing a game, the harder are the enemies to kill by generating them randomly, like the game "Dungeon Raid" on iOS. Here's the stat that the enemies should have:
HP
Attack
Time: Seconds needed for the enemy before attacking (The higher the time is, the slower is the enemy.)
The time varies depending on the attack amount (If the enemy is really strong, it must be slow)
Score: The score given by the enemy when killed
What I thought could be right to do is to determine the minimum stats that an enemy could get and then increment it depending on the game state and by using an algorithm to calculate them accordingly, but I really don't know how to do it and even where to start.

Answer 1

You probably want to start by being able to generate random numbers over a specific range. The simplest case is to generate random numbers uniformly between a minimum and a maximum value. As the game progresses you can change the minimum and maximum values to increase along with the stats. of your player.
You could do this like so,
NSUInteger BoundedUniformRandomNumber( NSUInteger min, NSUInteger max)
{
NSUInteger range = max - min;
u_int32_t randomNumber = (u_int32_t)min + arc4random_uniform((u_int32_t)range);
return (NSUInteger)randomNumber;
}
Note that arc4random_uniform is from stdlib so please include #import <stdlib.h>, also the arc4random_uniform is half-open, which means that it will return the minimum value, but will never return the maximum value. Therefore the maximum value you will generate in the above function is actually max - 1.
Hopefully that gets you started.