20 lines
594 B
C++
20 lines
594 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 assign_velocity(entt::registry ®istry) {
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// forces the creation of the pool for the velocity component
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registry.prepare<velocity>();
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for(auto entity: registry.view<position>()) {
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registry.assign<velocity>(entity, 1., 1.);
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}
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}
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