gaming-core/utils/Color.h

#ifndef COLOR_H
#define COLOR_H

typedef unsigned char ColorChannel;

template<int N>
class Color {
    static_assert(N <= 4, "a color can have at most 4 channels");

    ColorChannel data[N];

public:
    Color() = default;

    template<typename... Args>
    Color(ColorChannel a, Args&&... args) {
        const int size = sizeof...(args) + 1;
        int init[size] = {a, args...};
        static_assert(
            N == size,
            "color size and amount of channel arguments do not match");
        for(int i = 0; i < N; i++) {
            data[i] = init[i];
        }
    }

    float asFloat(int index) const {
        return data[index] * (1.0f / 255.0f);
    }

    ColorChannel& operator[](int index) {
        return data[index];
    }

    const ColorChannel& operator[](int index) const {
        return data[index];
    }
};

typedef Color<4> Color4;
typedef Color<3> Color3;
typedef Color<2> Color2;
typedef Color<1> Color1;

#endif