Lives2UiTextUpdateSystem.ixx File

System that synchronises a UI text element with a LivesComponent. More...

Included Headers

#include <format> #include <helios.engine.common.tags.SystemRole> #include <helios.engine.mechanics.lifecycle.components.Active> #include <helios.engine.modules.ui.layout> #include <helios.engine.modules.ui.widgets> #include <helios.engine.runtime.world.UpdateContext> #include <helios.engine.runtime.world.GameWorld> #include <helios.engine.mechanics.match.types> #include <helios.engine.mechanics.match.components>

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	ui
	User interface components and systems for game entities. More...
namespace	binding
	Data binding systems for UI components. More...
namespace	systems
	UI data binding systems. More...

Classes Index

class	Lives2UiTextUpdateSystem
	Updates UiTextComponents bound to a LivesComponent via LivesBindingComponent. More...

Description

System that synchronises a UI text element with a LivesComponent.

File Listing

The file content with the documentation metadata removed is:

1/**

2 * @file Lives2UiTextUpdateSystem.ixx

3 * @brief System that synchronises a UI text element with a LivesComponent.

4 */

5module;

6

7

8#include <format>

9

10

11

12export module helios.engine.modules.ui.binding.systems.Lives2UiTextUpdateSystem;

13

14import helios.engine.mechanics.match.components;

15import helios.engine.mechanics.match.types;

16

17import helios.engine.runtime.world.GameWorld;

18import helios.engine.runtime.world.UpdateContext;

19

20

21import helios.engine.modules.ui.widgets;

22import helios.engine.modules.ui.layout;

23

24import helios.engine.mechanics.lifecycle.components.Active;

25

26using namespace helios::engine::mechanics::match::components;

27using namespace helios::engine::mechanics::match::types;

28

29import helios.engine.common.tags.SystemRole;

30

31export namespace helios::engine::modules::ui::binding::systems {

32

33 /**

34 * @brief Updates UiTextComponents bound to a LivesComponent via LivesBindingComponent.

35 *

36 * Each frame, the system compares the stored LivesRevision in the

37 * binding against the target's current revision. On mismatch the

38 * formatted lives value is written into the UiTextComponent.

39 */

40 class Lives2UiTextUpdateSystem {

41

42 public:

43

44

45 using EngineRoleTag = helios::engine::common::tags::SystemRole;

46 /**

47 * @brief Synchronises bound text elements with their target lives values.

48 *

49 * @param updateContext Current frame context.

50 */

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

52

53 for (auto [entity, lbc, dfc, txt, active] : updateContext.view<

54 helios::engine::mechanics::match::components::LivesBindingComponent,

55 helios::engine::modules::ui::layout::components::NumberFormatterComponent,

56 helios::engine::modules::ui::widgets::components::UiTextComponent,

57 helios::engine::mechanics::lifecycle::components::Active

58 >().whereEnabled()) {

59

60 auto go = updateContext.find(lbc->target());

61

62 if (!go) {

63 continue;

64 }

65

66 if (auto* lc = go->get<LivesComponent>()) {

67 if (lbc->livesRevision() != lc->livesRevision()) {

68 txt->setText(dfc->format(lc->lives()));

69 lbc->setLivesRevision(lc->livesRevision());

70 }

71 }

72

73 }

74 }

75

76 };

77

78}

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