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davey: present_view function (with quick test example)

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This commit is contained in:
skypjack
2025-04-24 19:15:36 +02:00
parent 292cbd3d95
commit b0afed4bd0
2 changed files with 41 additions and 8 deletions
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6
testbed/system/imgui_system.cpp
View File

@@ -1,7 +1,7 @@
#include <entt/davey/davey.hpp>
#include <entt/entity/registry.hpp>
#include <imgui.h>
#include <system/imgui_system.h>
#include <entt/davey/davey.hpp>
namespace testbed {
@@ -10,6 +10,10 @@ void imgui_system(const entt::registry &registry) {
entt::davey(registry);
ImGui::End();
ImGui::Begin("Davey - view");
entt::davey(registry.view<int, double>());
ImGui::End();
ImGui::Begin("Davey - storage");
entt::davey(*registry.storage<int>());
ImGui::End();

43
tools/entt/davey/davey.hpp
View File

@@ -147,7 +147,7 @@ static void present_entity(const meta_ctx &ctx, const Entity entt, const It from
if(auto type = entt::resolve(ctx, storage.info()); type) {
if(const davey_data *info = type.custom(); ImGui::TreeNode(&storage.info(), "%s", DAVEY_OR(storage))) {
if(const auto obj = type.from_void(storage.value(entt)); obj) {
present_element<Entity>(obj, [&ctx, from, to](const char *name, const entt::entity other) {
present_element<Entity>(obj, [&ctx, from, to](const char *name, const Entity other) {
if(ImGui::TreeNode(name, "%s: %d [%d/%d]", name, entt::to_integral(other), entt::to_entity(other), entt::to_version(other))) {
present_entity<Entity>(ctx, other, from, to);
ImGui::TreePop();
@@ -165,6 +165,40 @@ static void present_entity(const meta_ctx &ctx, const Entity entt, const It from
}
}
template<typename... Get, typename... Exclude, std::size_t... Index>
static void present_view(const meta_ctx &ctx, const entt::basic_view<get_t<Get...>, exclude_t<Exclude...>> &view, std::index_sequence<Index...>) {
using view_type = entt::basic_view<get_t<Get...>, exclude_t<Exclude...>>;
const std::array<const typename view_type::common_type *, sizeof...(Index)> range{view.template storage<Index>()...};
for(auto tup: view.each()) {
const auto entt = std::get<0>(tup);
ImGui::PushID(static_cast<int>(entt::to_entity(entt)));
if(ImGui::TreeNode(&entt::type_id<typename view_type::entity_type>(), "%d [%d/%d]", entt::to_integral(entt), entt::to_entity(entt), entt::to_version(entt))) {
for(const auto *storage: range) {
if(auto type = entt::resolve(ctx, storage->info()); type) {
if(const davey_data *info = type.custom(); ImGui::TreeNode(&storage->info(), "%s", DAVEY_OR((*storage)))) {
if(const auto obj = type.from_void(storage->value(entt)); obj) {
present_element<typename view_type::entity_type>(obj, [](const char *name, const typename view_type::entity_type entt) {
ImGui::Text("%s: %d [%d/%d]", name, entt::to_integral(entt), entt::to_entity(entt), entt::to_version(entt));
});
}
ImGui::TreePop();
}
} else {
const std::string name{storage->info().name()};
ImGui::Text("%s", name.data());
}
}
ImGui::TreePop();
}
ImGui::PopID();
}
}
} // namespace internal
template<typename Entity, typename Type, typename Allocator>
@@ -179,12 +213,7 @@ void davey(const entt::basic_storage<Entity, Type, Allocator> &storage) {
template<typename... Get, typename... Exclude>
void davey(const meta_ctx &ctx, const entt::basic_view<get_t<Get...>, exclude_t<Exclude...>> &view) {
using view_type = entt::basic_view<get_t<Get...>, exclude_t<Exclude...>>;
const std::array<typename view_type::common_type, sizeof...(Get)> range{view.template storage<Get>()...};
for(auto entt: view) {
internal::present_entity(ctx, entt, range.begin(), range.end());
}
internal::present_view(ctx, view, std::index_sequence_for<Get...>{});
}
template<typename... Get, typename... Exclude>