Gem roller

This program will generate a random gem loot based on Basic Fantasy RPG rules, it was requested by a friend.

Sample output:
You got: 2 Ruby Gem
Price: 2000

Press ENTER to generate a new item

Code Snippet (main.c)

#include "nox.h"
int Nox_RTD(int);

char *Nox_Random(void);
/**
 * main - entry point for the program
 *
 * Return: always 0;
 */
int main()
{
    char *material[] = {
		"Chlorastrolite",
		"Chlorastrolite",
		"Malachite",
		"Aventurine",
		"Rhodonite",
		"Amethyst",
		"Fluorospar",
		"Garnet",
		"Alexandrite",
		"Topaz",
		"Heliotrope",
		"Sapphire",
		"Diamond",
		"Fire Opal",
		"Ruby",
		"Emerald"
    };
	char *rarities[] = {
	"Ornamental",
        "Ornamental",
        "Semiprecious",
        "Fancy",
        "Precious",
        "Gem"
    };
	/** These values vary depending on the rarity
		They are directly linked to it */
	int price_rarity[] = {10, 10, 50, 100, 500, 1000};
	int quantity_rarity[] = {10, 10, 8, 6, 4, 2};

	/** Actual vars that will be printed */
    int price, quantity, rarity, luck, item_material;
    int inNumber = 3;
	while(inNumber)
	{
	  inNumber--;
		/** Rarity */
		rarity = Nox_RTD(5);
		printf("You got: ");

		/** roll lucky list */
		luck = Nox_RTD(12);
		/** If luck equals 12, rarity gets an extra*/
		if (luck <= 2 && rarity > 1)
            rarity--;
		if (luck == 12 && rarity < 5)
            rarity++;


		/** rarity holds the rarity of the gem, as such
			we can send the rarity to quantity rarity
			to figure out how many we need.
			So since quantity rarity gives us the max
			we send that to RTD to figure out how many
			we get*/
		quantity = Nox_RTD(quantity_rarity[rarity]);

		/** Calculate price based on rarity * quantity*/
		price = price_rarity[rarity] * quantity;

		/** Apply luck modifiers to price*/
        switch(luck)
		{
			case 3:
				price /= 2;
				break;
			case 4:
				price /= 1.5;
				break;
			case 10:
				price *= 1.5;
				break;
			case 11:
				price *= 2;
				break;
			default:
				break;
		}
		item_material = Nox_RTD(15);
		printf("%d ", quantity);

		if (rarity < 5)
			printf("%s ", rarities[rarity]);

		printf("%s ", material[item_material]);

		if (rarity >= 5)
			printf("%s", rarities[rarity]);
		putchar('\n');

		printf("Price: %d\n", price);
		putchar('\n');

		printf("Press ENTER to generate a new item\n");
		/** Debug messages
		printf("%d\n", luck);
		printf("%d\n", rarity);
		printf("%d\n", item_material);
		*/
		getchar();

		printf("------------------------------------\n");
	}

    return (0);
}
        

Download

If you want to try it out yourself, you can download the full project below:

Download Gem roller

To compile it, just unzip the whole folder and do a "gcc *.c" on it, no dependencies.

It works best on linux, if you need to run it in windows use WSL or another emulator. It can work in windows but it will screw the RNG.

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