51 lines
1.4 KiB
C++
51 lines
1.4 KiB
C++
#include <units.h>
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#include <iostream>
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struct WeatherStation {
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double temperature;
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double pressure;
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double precipitation;
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};
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void print_value(const flecs::cursor& cur) {
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// Get unit entity and component
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flecs::entity u = cur.get_unit();
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const flecs::Unit *u_data = u.get<flecs::Unit>();
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// Print value with unit symbol
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std::cout << cur.get_member() << ": " << cur.get_float()
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<< " " << u_data->symbol << "\n";
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}
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int main(int, char *[]) {
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flecs::world ecs;
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// Import units module.
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ecs.import<flecs::units>();
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// Register reflection data with units. This can improve the way information
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// is visualized in tools, such as the explorer.
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ecs.component<WeatherStation>()
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.member<double, flecs::units::temperature::Celsius>("temperature")
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.member<double, flecs::units::pressure::Bar>("pressure")
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.member<double, flecs::units::length::MilliMeters>("precipitation");
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flecs::entity e = ecs.entity().set<WeatherStation>({24, 1.2, 0.5});
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// Use cursor API to print values with units
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WeatherStation *ptr = e.get_mut<WeatherStation>();
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flecs::cursor cur = ecs.cursor<WeatherStation>(ptr);
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cur.push();
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print_value(cur);
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cur.next();
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print_value(cur);
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cur.next();
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print_value(cur);
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cur.pop();
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// Output:
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// temperature: 24 °C
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// pressure: 1.2 bar
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// precipitation: 0.5 mm
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}
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