💿🐜 Antkeeper source code https://antkeeper.com
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/*
* Copyright (C) 2021 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/entity-commands.hpp"
#include "game/components/model-component.hpp"
#include "game/components/transform-component.hpp"
#include "game/components/copy-transform-component.hpp"
#include "game/components/snap-component.hpp"
#include "game/components/parent-component.hpp"
#include <limits>
namespace ec {
using namespace ecs;
void translate(entt::registry& registry, entt::entity eid, const float3& translation)
{
if (registry.has<transform_component>(eid))
{
transform_component& transform = registry.get<transform_component>(eid);
transform.local.translation += translation;
}
}
void move_to(entt::registry& registry, entt::entity eid, const float3& position)
{
if (registry.has<transform_component>(eid))
{
transform_component& transform = registry.get<transform_component>(eid);
transform.local.translation = position;
}
}
void warp_to(entt::registry& registry, entt::entity eid, const float3& position)
{
if (registry.has<transform_component>(eid))
{
transform_component& transform = registry.get<transform_component>(eid);
transform.local.translation = position;
transform.warp = true;
}
}
void set_scale(entt::registry& registry, entt::entity eid, const float3& scale)
{
if (registry.has<transform_component>(eid))
{
transform_component& transform = registry.get<transform_component>(eid);
transform.local.scale = scale;
}
}
void set_transform(entt::registry& registry, entt::entity eid, const math::transform<float>& transform, bool warp)
{
if (registry.has<transform_component>(eid))
{
transform_component& component = registry.get<transform_component>(eid);
component.local = transform;
component.warp = warp;
}
}
void place(entt::registry& registry, entt::entity eid, const float2& translation)
{
snap_component component;
component.warp = true;
component.relative = false;
component.autoremove = true;
component.ray.origin = {translation[0], 10000.0f, translation[1]};
component.ray.direction = {0.0f, -1.0f, 0.0f};
registry.assign_or_replace<snap_component>(eid, component);
}
void assign_render_layers(entt::registry& registry, entt::entity eid, unsigned int layers)
{
if (registry.has<model_component>(eid))
{
model_component model = registry.get<model_component>(eid);
model.layers = layers;
registry.replace<model_component>(eid, model);
// Apply to child layers
registry.view<parent_component>().each(
[&](auto entity, auto& component)
{
if (component.parent == eid)
assign_render_layers(registry, entity, layers);
});
}
}
void bind_transform(entt::registry& registry, entt::entity source_eid, entt::entity target_eid)
{
copy_transform_component copy_transform = {target_eid};
registry.assign_or_replace<copy_transform_component>(source_eid, copy_transform);
}
math::transform<float> get_local_transform(entt::registry& registry, entt::entity eid)
{
if (registry.has<transform_component>(eid))
{
const transform_component& component = registry.get<transform_component>(eid);
return component.local;
}
return math::identity_transform<float>;
}
math::transform<float> get_world_transform(entt::registry& registry, entt::entity eid)
{
if (registry.has<transform_component>(eid))
{
const transform_component& component = registry.get<transform_component>(eid);
return component.world;
}
return math::identity_transform<float>;
}
void parent(entt::registry& registry, entt::entity child, entt::entity parent)
{
parent_component component;
component.parent = parent;
registry.assign_or_replace<parent_component>(child, component);
}
} // namespace ec