Pokemon-Game/utils.cpp at main · Posor/Pokemon-Game · GitHub

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//
//  utils.cpp
//  AlgoFISE1
//
//  Created by Christophe Gravier on 12/09/16.
//  Copyright © 2016 Christophe Gravier. All rights reserved.
//

#include "utils.h"

long random_at_most(long max) {
    unsigned long
    // max <= RAND_MAX < ULONG_MAX, so this is okay.
    num_bins = (unsigned long) max + 1,
    num_rand = (unsigned long) RAND_MAX + 1,
    bin_size = num_rand / num_bins,
    defect   = num_rand % num_bins;

    long x;
    do {
        x = rand();
    }
    // This is carefully written not to overflow
    while (num_rand - defect <= (unsigned long)x);

    // Truncated division is intentional
    return x/bin_size;
}

float getEfficiency(int typeAttaque, int typeDefense) {
    static float typeChart[18][18] = {
        {1, 1, 1, 1, 1, 0.5, 1, 0, 0.5, 1, 1, 1, 1, 1, 1, 1, 1, 1}, // Normal
        {2, 1, 0.5, 0.5, 1, 2, 0.5, 0, 2, 1, 1, 1, 1, 0.5, 2, 1, 2, 0.5}, // Fighting
        {1, 2, 1, 1, 1, 0.5, 2, 1, 0.5, 1, 1, 2, 0.5, 1, 1, 1, 1, 1}, // Flying
        {1, 1, 1, 0.5, 0.5, 0.5, 1, 0.5, 0, 1, 2, 1, 1, 1, 1, 1, 1, 2}, // Poison
        {1, 1, 0, 2, 1, 2, 0.5, 1, 2, 2, 1, 0.5, 2, 1, 1, 1, 1, 1}, // Ground
        {1, 0.5, 2, 1, 0.5, 1, 2, 1, 0.5, 2, 1, 1, 1, 1, 2, 1, 1, 1}, // Rock
        {1, 0.5, 0.5, 0.5, 1, 1, 1, 0.5, 0.5, 0.5, 2, 1, 2, 1, 1, 1, 2, 0.5}, // Bug
        {0, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 2, 1, 1, 0.5, 1}, // Ghost
        {1, 1, 1, 1, 1, 2, 1, 1, 0.5, 0.5, 0.5, 1, 0.5, 1, 2, 1, 1, 2}, // Steel
        {1, 1, 1, 1, 1, 0.5, 2, 1, 2, 0.5, 2, 0.5, 1, 1, 2, 0.5, 1, 1}, // Fire
        {1, 1, 0.5, 0.5, 2, 2, 0.5, 1, 0.5, 0.5, 0.5, 2, 0.5, 1, 0.5, 1, 1, 1}, // Grass
        {1, 1, 1, 1, 2, 2, 1, 1, 1, 2, 0.5, 0.5, 1, 1, 1, 0.5, 1, 1}, // Water
        {1, 1, 2, 1, 0, 1, 1, 1, 1, 1, 0.5, 2, 0.5, 1, 1, 0.5, 1, 1}, // Electric
        {1, 2, 1, 2, 1, 1, 1, 1, 0.5, 1, 1, 1, 1, 0.5, 1, 1, 0, 1}, // Psychic
        {1, 1, 2, 1, 2, 1, 1, 1, 0.5, 0.5, 2, 0.5, 1, 1, 0.5, 2, 1, 1}, // Ice
        {1, 1, 1, 1, 1, 1, 1, 1, 0.5, 1, 1, 1, 1, 1, 1, 2, 1, 0}, // Dragon
        {1, 0.5, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 2, 1, 1, 0.5, 0.5}, // Dark
        {1, 2, 1, 0.5, 1, 1, 1, 1, 0.5, 0.5, 1, 1, 1, 1, 1, 2, 2, 1} // Fairy
    };

    if(typeAttaque < 0 || typeAttaque > 17 || typeDefense < 0 || typeDefense > 17) return 1.0;

    return typeChart[typeAttaque][typeDefense];
}