SceneObjectOptions.h

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#pragma once
#include <glm/glm.hpp>
#include <variant>
#include <functional>
 
#include "physics/bounding/BoxCollider.h"
 
class ICollider;
 
struct ObjectOptions {
    glm::vec3 position{0.0f};
    glm::vec3 scale{1.0f};
    glm::vec3 rotation{0.0f};
};
 
struct PointMassOptions {
    ObjectOptions base;
    bool isStatic = false;
    double mass = 1.0;
    glm::vec3 velocity = glm::vec3(0.0f);
 
    PointMassOptions() = default;
};
 
struct RigidBodyOptions {
    ObjectOptions base;
    std::function<std::unique_ptr<Physics::Bounding::ICollider>(const ObjectOptions&)> createCollider;
    bool isStatic = false;
    double mass = 1.0;
    glm::vec3 velocity = glm::vec3(0.0f);
 
    // Helpers for making colliders
    static RigidBodyOptions Box(ObjectOptions base, bool isStatic = false, double mass = 1.0, glm::vec3 velocity = glm::vec3(0.0f)) {
        RigidBodyOptions o;
        o.base = base;
        o.mass = mass;
        o.velocity = velocity;
        o.isStatic = isStatic;
 
        // Collider will store as local transform
        o.createCollider = [](auto const& b) -> std::unique_ptr<Physics::Bounding::ICollider>{
            (void)b;
            return std::make_unique<Physics::Bounding::BoxCollider>(
                glm::vec3(0.0f),
                glm::vec3(0.5f),
                glm::quat(1.0f, 0.0f, 0.0f, 0.0f)
            );
        };
        return o;
    }
};
 
using CreationOptions = std::variant<ObjectOptions, PointMassOptions, RigidBodyOptions>;