commands.cpp

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/*
 * Copyright (C) 2023  Christopher J. Howard
 *
 * This file is part of Antkeeper source code.
 *
 * Antkeeper source code is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Antkeeper source code is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Antkeeper source code.  If not, see <http://www.gnu.org/licenses/>.
 */
 
#include "game/commands/commands.hpp"
#include "game/components/scene-component.hpp"
#include "game/components/transform-component.hpp"
#include "game/components/celestial-body-component.hpp"
#include "game/components/terrain-component.hpp"
#include <engine/math/quaternion.hpp>
#include <limits>
 
namespace command {
 
void translate(entity::registry& registry, entity::id eid, const math::fvec3& translation)
{
    const ::transform_component* transform = registry.try_get<::transform_component>(eid);
    if (transform)
    {
        registry.patch<::transform_component>
        (
            eid,
            [&translation](auto& transform)
            {
                transform.local.translation += translation;
            }
        );
    }
}
 
void rotate(entity::registry& registry, entity::id eid, float angle, const math::fvec3& axis)
{
    const ::transform_component* transform = registry.try_get<::transform_component>(eid);
    if (transform)
    {
        registry.patch<::transform_component>
        (
            eid,
            [angle, &axis](auto& transform)
            {
                transform.local.rotation = math::normalize(math::angle_axis(angle, axis) * transform.local.rotation);
            }
        );
    }
}
 
void move_to(entity::registry& registry, entity::id eid, const math::fvec3& position)
{
    const ::transform_component* transform = registry.try_get<::transform_component>(eid);
    if (transform)
    {
        registry.patch<::transform_component>
        (
            eid,
            [&position](auto& transform)
            {
                transform.local.translation = position;
            }
        );
    }
}
 
void warp_to(entity::registry& registry, entity::id eid, const math::fvec3& position)
{
    const ::transform_component* transform = registry.try_get<::transform_component>(eid);
    if (transform)
    {
        registry.patch<::transform_component>
        (
            eid,
            [&position](auto& transform)
            {
                transform.local.translation = position;
            }
        );
    }
}
 
void set_scale(entity::registry& registry, entity::id eid, const math::fvec3& scale)
{
    const ::transform_component* transform = registry.try_get<::transform_component>(eid);
    if (transform)
    {
        registry.patch<::transform_component>
        (
            eid,
            [&scale](auto& transform)
            {
                transform.local.scale = scale;
            }
        );
    }
}
 
void set_transform(entity::registry& registry, entity::id eid, const math::transform<float>& transform)
{
    const ::transform_component* transform_component = registry.try_get<::transform_component>(eid);
    if (transform_component)
    {
        registry.patch<::transform_component>
        (
            eid,
            [&other_transform = transform](auto& transform)
            {
                transform.local = other_transform;
            }
        );
    }
}
 
void place(entity::registry& registry, entity::id eid, entity::id celestial_body_id, double altitude, double latitude, double longitude)
{
 
}
 
void assign_render_layers(entity::registry& registry, entity::id eid, std::uint8_t layer_mask)
{
    const ::scene_component* component = registry.try_get<::scene_component>(eid);
    if (component)
    {
        registry.patch<::scene_component>
        (
            eid,
            [layer_mask](auto& component)
            {
                component.layer_mask = layer_mask;
            }
        );
    }
}
 
math::transform<float> get_local_transform(entity::registry& registry, entity::id eid)
{
    const ::transform_component* transform = registry.try_get<::transform_component>(eid);
    if (transform)
    {
        return transform->local;
    }
    
    return math::transform<float>::identity();
}
 
math::transform<float> get_world_transform(entity::registry& registry, entity::id eid)
{
    const ::transform_component* transform = registry.try_get<::transform_component>(eid);
    if (transform)
    {
        return transform->world;
    }
    
    return math::transform<float>::identity();
}
 
} // namespace command