SpinSystem.ixx File

System for applying continuous spin rotation to entities. More...

Included Headers

#include <cmath> #include <helios.engine.mechanics.lifecycle.components.Active> #include <helios.engine.modules.spatial.transform.components.RotationStateComponent> #include <helios.engine.modules.effects.gfx.components.SpinComponent> #include <helios.math> #include <helios.engine.runtime.world.GameWorld> #include <helios.engine.runtime.world.UpdateContext> #include <helios.engine.modules.spatial.transform.components.ComposeTransformComponent> #include <helios.engine.ecs.System>

Namespaces Index

namespace	helios
namespace	engine
	Main engine module aggregating core infrastructure and game systems. More...
namespace	modules
	Domain-specific components and systems. More...
namespace	physics
	Physics simulation and collision detection subsystem for the game engine. More...
namespace	motion
	Motion physics components and systems. More...
namespace	systems

Classes Index

class	SpinSystem
	System that updates the spin rotation of entities. More...

Description

System for applying continuous spin rotation to entities.

File Listing

The file content with the documentation metadata removed is:

1/**

2 * @file SpinSystem.ixx

3 * @brief System for applying continuous spin rotation to entities.

4 */

5module;

6

7

8#include <cmath>

9

10export module helios.engine.modules.physics.motion.systems.SpinSystem;

11

12import helios.engine.ecs.System;

13import helios.engine.runtime.world.UpdateContext;

14import helios.engine.runtime.world.GameWorld;

15

16import helios.math;

17

18import helios.engine.modules.effects.gfx.components.SpinComponent;

19import helios.engine.modules.spatial.transform.components.ComposeTransformComponent;

20import helios.engine.modules.spatial.transform.components.RotationStateComponent;

21

22import helios.engine.mechanics.lifecycle.components.Active;

23

24export namespace helios::engine::modules::physics::motion::systems {

25

26 /**

27 * @brief System that updates the spin rotation of entities.

28 *

29 * @details

30 * This system iterates over entities with a SpinComponent and updates their

31 * accumulated rotation angle based on the spin speed and delta time.

32 * The updated rotation state is then written to the RotationStateComponent.

33 */

34 class SpinSystem : public helios::engine::ecs::System {

35

36 /**

37 * @brief Identity matrix constant.

38 */

39 inline static const helios::math::mat4f identity = helios::math::mat4f::identity();

40

41 public:

42

43 /**

44 * @brief Updates spin rotation for all applicable entities.

45 *

46 * @param updateContext Context containing frame timing and game state.

47 */

48 void update(helios::engine::runtime::world::UpdateContext& updateContext) noexcept override {

49

50

51 for (auto [entity, sc, rsc, active] : gameWorld_->view<

52 helios::engine::modules::effects::gfx::components::SpinComponent,

53 helios::engine::modules::spatial::transform::components::RotationStateComponent,

54 helios::engine::mechanics::lifecycle::components::Active

55 >().whereEnabled()) {

56

57 float delta = updateContext.deltaTime();

58

59 sc->setRotation(std::fmod(sc->rotation() + sc->speed() * delta, 360.0f));

60

61 rsc->setSpinRotationAxis(sc->axis());

62 rsc->setSpinRotationAngle(sc->rotation());

63 }

64

65

66 }

67 };

68

69

70}

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