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Slightly more usable entity tree

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This commit is contained in:
sippeangelo
2015-12-16 12:05:55 +01:00
parent bd6adcc157
commit 661532e355
2 changed files with 67 additions and 10 deletions
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src/Engine/Editor/EditorSystem.cpp
+66 -10
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@@ -414,23 +414,62 @@ void EditorSystem::drawUI(World* world, double dt)
ImGui::End();
if (ImGui::Begin("Entitites")) {
static EntityID draggingEntity = 0;
auto entityChildren = world->GetEntityChildren();
std::function<void(EntityID)> recurse = [&](EntityID parent) {
auto range = entityChildren.equal_range(parent);
for (auto it = range.first; it != range.second; it++) {
ImVec2 pos = ImGui::GetCursorScreenPos();
float width = ImGui::GetContentRegionAvailWidth();
ImRect bb(pos + ImVec2(20, 0), pos + ImVec2(width, 13));
auto window = ImGui::GetCurrentWindow();
if (m_Selection == it->second) {
const ImU32 col = window->Color(ImGuiCol_HeaderActive);
window->DrawList->AddRectFilled(bb.Min, bb.Max, col);
}
ImGuiID id = window->GetID((std::string("#SelectButton") + std::to_string(it->second)).c_str());
bool hovered = false;
bool held = false;
if (ImGui::ButtonBehavior(bb, id, &hovered, &held)) {
m_Selection = it->second;
}
if (held) {
ImVec2 entityDragDelta = ImGui::GetMouseDragDelta(0);
if (std::abs(entityDragDelta.x) > 0 && std::abs(entityDragDelta.y) > 0) {
if (draggingEntity == 0) {
draggingEntity = it->second;
LOG_DEBUG("Started drag of entity %i", draggingEntity);
}
ImGui::SetNextWindowPos(ImGui::GetIO().MousePos + ImVec2(20, 0));
ImGui::Begin("Change parent", nullptr, ImVec2(0, 0), 0.3f, ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoResize|ImGuiWindowFlags_NoMove|ImGuiWindowFlags_NoSavedSettings);
ImGui::Text("#%i", draggingEntity);
ImGui::End();
}
}
ImGui::SetNextTreeNodeOpened(true, ImGuiSetCond_Once);
if (ImGui::TreeNode((std::string("#") + std::to_string(it->second)).c_str())) {
if (ImGui::IsItemHovered() && ImGui::IsMouseClicked(0)) {
m_Selection = it->second;
if (draggingEntity != 0 && ImGui::IsItemHoveredRect() && ImGui::IsMouseReleased(0)) {
LOG_DEBUG("Changed parent of %i to %i", draggingEntity, it->second);
changeParent(draggingEntity, it->second);
draggingEntity = 0;
}
ImGui::SameLine();
if (ImGui::Button("Add")) {
EntityID entity = world->CreateEntity(it->second);
world->AttachComponent(entity, "Transform");
}
ImGui::SameLine();
if (ImGui::Button("Delete")) {
world->DeleteEntity(it->second);
if (ImGui::BeginPopupContextItem("item context menu")) {
if (ImGui::Button("Add")) {
EntityID entity = world->CreateEntity(it->second);
world->AttachComponent(entity, "Transform");
}
ImGui::SameLine();
if (ImGui::Button("Delete")) {
world->DeleteEntity(it->second);
ImGui::CloseCurrentPopup();
if (m_Selection == it->second) {
m_Selection = 0;
}
}
ImGui::EndPopup();
}
recurse(it->second);
ImGui::TreePop();
@@ -459,3 +498,20 @@ bool EditorSystem::createDeleteButton(std::string componentType)
window->DrawList->AddCircleFilled(bb.GetCenter(), 7.f, col, 16);
return pressed;
}
void EditorSystem::changeParent(EntityID entity, EntityID newParent)
{
if (entity == newParent) {
return;
}
// An entity can't be a child to one of its own children
auto children = m_World->GetEntityChildren().equal_range(entity);
for (auto it = children.first; it != children.second; it++) {
if (it->second == newParent) {
return;
}
}
m_World->SetParent(entity, newParent);
}