Green Sky
5c7231b7a3
git-subtree-dir: external/entt/entt git-subtree-split: fef921132cae7588213d0f9bcd2fb9c8ffd8b7fc
20 lines
615 B
C++
20 lines
615 B
C++
#include <entt/core/attribute.h>
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#include <entt/entity/registry.hpp>
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#include "types.h"
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ENTT_API void update_position(entt::registry ®istry) {
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registry.view<position, velocity>().each([](auto &pos, auto &vel) {
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pos.x += static_cast<int>(16 * vel.dx);
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pos.y += static_cast<int>(16 * vel.dy);
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});
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}
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ENTT_API void emplace_velocity(entt::registry ®istry) {
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// forces the creation of the pool for the velocity component
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static_cast<void>(registry.storage<velocity>());
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for(auto entity: registry.view<position>()) {
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registry.emplace<velocity>(entity, 1., 1.);
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}
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}
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