cNova

A light script language embedded in C++

usage

define and use local variables

auto x = 10; // int
auto y = 1.2; // float
auto z = "hello"; // string
auto w = true; // bool
auto p = [1, 2, 3]; // array
auto q = {}; // dictionary
auto r = this; // pointer

cNova is a weak-type language:

auto x = 10;
x = "wryyyy";

You can use these variables in c style way:

register "math";
register "string";

x = 10 + 20;
y = sin(3.14); // use math lib
z = strlen("QWQ"); // use string lib

condition and loop

if (x == 10) {
    y = true;
}
else if (x == 20) {
    y = false;
}
else {
    y = nullptr;
}

```c++
auto i = 0;
while (i < 10) {
    i++;
}

input and output

In cNova, all codes in a file is considered as a function. So function parameters are all input data you can get, and you can use keyword return to return a value:

extern x, y, z;
return x + y + z;

access C++

You can use this to access member variables or member function in current class:

auto player = this;
player->HP -= 10;

if (player->HP <= 0) {
    player->die();
}

an example

// a simple example for burning-attack in a game
// it's easier for player to design their own skills or weapon

// burning_skill.nova
extern temp;

auto dmg = 20;
auto prob = 0.5;
auto times = 1.2;

if (temp > 30) {
    prob = 0.75;
}

auto r = rand();
if (r <= prob) {
    dmg *= times;
    this->addStatus("burning");

    auto i = 0;
    while (i < this->equipments->size()) {
        if (this->equipments->get(i)->flammable) {
            this->equipments->get(i)->setFlame();
        }
    }
}

auto def = this->def;
this->HP -= dmg - def;

return this->HP > 0;

// burning state data
// burning.nova
auto dic = {};
dic["icon"] = "burning.png";
dic["format"] = "You are burning! Last for %i round!";
dic["damage_per_round"] = 5;
dic["last_round"] = 3;
return dic;

NeilKleistGao / cNova