imgui_entt_entity_editor

A drop-in, single-file entity editor for EnTT, with ImGui as graphical backend. Originally developed for MushMachine.

demo-code (live)

Editor

Editor with Entiy-List

With Drag and Drop

example usage

struct Transform {
    float x = 0.f;
    float y = 0.f;
};

struct Velocity {
    float x = 0.f;
    float y = 0.f;
};

namespace MM {
template <>
void ComponentEditorWidget<Transform>(entt::registry& reg, entt::registry::entity_type e)
{
	auto& t = reg.get<Transform>(e);
	ImGui::DragFloat("x", &t.x, 0.1f);
	ImGui::DragFloat("y", &t.y, 0.1f);
}

template <>
void ComponentEditorWidget<Velocity>(entt::registry& reg, entt::registry::entity_type e)
{
	auto& v = reg.get<Velocity>(e);
	ImGui::DragFloat("x", &v.x, 0.1f);
	ImGui::DragFloat("y", &v.y, 0.1f);
}
}


entt::registry reg;
MM::EntityEditor<entt::entity> editor;

editor.registerComponent<Transform>("Transform");
editor.registerComponent<Velocity>("Velocity");

Dependencies

The editor uses EnTTv3.11.0 and ImGui. (tested with ImGui 1.68, 1.72b, 1.75, 1.78, 1.82, 1.85, 1.87) To use it with EnTTv3.0.0, use the dedicated branch. For specific EnTT version check the tags, if a new EnTT version does not require a update, I won't make a new Release. Releases available for EnTT 3.1.0, 3.1.1, 3.2.0, 3.2.1, 3.2.2, 3.3.x, 3.4.0, 3.6.0-3.8.1, 3.9.0, 3.10.0, 3.11.0.