29 lines
798 B
C++
29 lines
798 B
C++
#include <emplace.h>
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#include <iostream>
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// The emplace method constructs a component directly in the storage vs. a
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// regular set, which moves the value into an already constructed value in the
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// storage. This reduces the overhead of creating a new component.
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//
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// Components that do not have a default constructor need to be created with
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// emplace, as they can't be constructed automatically by flecs.
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struct NoDefaultCtor {
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NoDefaultCtor(double x_, double y_) : x(x_), y(y_) { }
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double x, y;
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};
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int main(int, char *[]) {
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flecs::world ecs;
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flecs::entity e = ecs.entity()
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.emplace<NoDefaultCtor>(10.0, 20.0);
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const NoDefaultCtor *ptr = e.get<NoDefaultCtor>();
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std::cout << "{" << ptr->x << ", " << ptr->y << "}" << "\n";
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// Output
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// {10, 20}
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}
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