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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
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