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Corrected entity parent/child math bug

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children now follow parents correctly
master
Joey Pollack 3 years ago
parent ee9112897c
commit 95d9630b6b
6 changed files with 94 additions and 51 deletions
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2
docs/tasks/Bugs.todo
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@ -1,5 +1,7 @@
High Importance:
✔ Rotated children translate in local space instead of world space (set the parents velocity and see the rotated child move incorrectly) @done(22-10-18 13:46)
✔ Parent/child transform hierarchy doesn't seem to work correctly in general @done(22-10-18 13:46)
☐ Colors are not saved accurately
✔ Add Component button on properties view no longer works @critical @done(22-09-07 13:44)
✔ AssetBrowser back button does not stop at the asset root directory @high @done(22-07-05 13:53)

1
docs/tasks/editor.todo
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@ -51,6 +51,7 @@ Editor:
GUI Panels:
World View:
☐ Add frame feature to center the camera on the selected entity
✔ Middle Mouse view dragging @done(22-09-08 15:45)
✔ Render the current world and display on view panel @done(22-09-08 15:45)
☐ Optional and adjustable grid display

2
src/run_modes/editor/panels/world_view.cpp
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@ -143,7 +143,7 @@ namespace lunarium { namespace editor
ImGui::SameLine();
if (ImGui::ImageButton((ImTextureID)DataManager::mStop->GetGLID64(),
ImVec2(DataManager::mStop->GetWidth(), DataManager::mStop->GetHeight())))
ImVec2(DataManager::mStop->GetWidth(), DataManager::mStop->GetHeight())) && mSimRunning)
{
mpEditor->OnStop();
mpWorld->ResetState(mWorldState);

123
src/run_modes/testbed/scenes/simple_render_scene.cpp
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@ -62,14 +62,18 @@ namespace lunarium
mParentPos = glm::vec3(300.0f, 300.0f, 0.0f);
mChildPos = glm::vec3(250.0f, 0.0f, 0.0f);
mChild2Pos = glm::vec3(100.f, 100.0f, 0.0f);
mParentAngle = 0.0f;
mChildAngle = 0.0f;
mChild2Angle = 0.0f;
mParentPos2 = glm::vec3(700.0f, 200.0f, 0.0f);
mChildPos2 = glm::vec3(-300.0f, 50.0f, 0.0f);
mParentPos3 = glm::vec3(200.0f, 600.0f, 0.0f);
mChildPos3 = glm::vec3(150.0f, 100.0f, 0.0f);
mChildPos3_2 = glm::vec3(150.0f, 0.0f, 0.0f);
angle = 0.0f;
box_angle = 0.0f;
@ -303,21 +307,30 @@ namespace lunarium
g.DrawQuad(Rectangle(mParentPos.x, mParentPos.y, 50.0f, 50.0f), Color::Blue(), nullptr, mParentAngle);
glm::mat4 parent = glm::mat4(1.0f);
parent = glm::translate(parent, mParentPos);
parent = glm::rotate(parent, mParentAngle, glm::vec3(0.0f, 0.0f, 1.0f));
parent = glm::rotate(parent, mParentAngle * -1.0f, glm::vec3(0.0f, 0.0f, 1.0f));
g.DrawQuad(Rectangle(mChildPos.x, mChildPos.y, 50.0f, 50.0f), Color::Green(), nullptr, mChildAngle, Rectangle(-1, -1, -1, -1), parent);
g.DrawLine(glm::vec2(mParentPos.x, mParentPos.y), glm::vec2(mParentPos.x + mChildPos.x, mParentPos.y + mChildPos.y), Color::Blue(), 1.5f);
g.DrawQuad(Rectangle(mParentPos2.x, mParentPos2.y, 50.0f, 50.0f), Color::Red());
parent = glm::mat4(1.0f);
parent = glm::translate(parent, mParentPos2);
g.DrawQuad(Rectangle(mChildPos2.x, mChildPos2.y, 50.0f, 50.0f), Color::White(), nullptr, mChildAngle, Rectangle(-1, -1, -1, -1), parent);
g.DrawLine(glm::vec2(mParentPos2.x, mParentPos2.y), glm::vec2(mParentPos2.x + mChildPos2.x, mParentPos2.y + mChildPos2.y), Color::Red(), 1.5f);
g.DrawQuad(Rectangle(mParentPos3.x, mParentPos3.y, 50.0f, 50.0f), Color::Black());
parent = glm::mat4(1.0f);
parent = glm::translate(parent, mParentPos3);
g.DrawQuad(Rectangle(mChildPos3.x, mChildPos3.y, 50.0f, 50.0f), Color(0.75f, 0.15f, 0.5f, 1.0f), nullptr, mChildAngle, Rectangle(-1, -1, -1, -1), parent);
g.DrawLine(glm::vec2(mParentPos3.x, mParentPos3.y), glm::vec2(mParentPos3.x + mChildPos3.x, mParentPos3.y + mChildPos3.y), Color::Black(), 1.5f);
parent = glm::translate(parent, mChildPos);
parent = glm::rotate(parent, mChildAngle * -1.0f, glm::vec3(0.0f, 0.0f, 1.0f));
g.DrawQuad(Rectangle(mChild2Pos.x, mChild2Pos.y, 50.0f, 50.0f), Color::Green(), nullptr, mChild2Angle, Rectangle(-1, -1, -1, -1), parent);
g.DrawLine(glm::vec2(mParentPos.x + mChildPos.x, mParentPos.y + mChildPos.y), glm::vec2(mParentPos.x + mChildPos.x + mChild2Pos.x, mParentPos.y + mChildPos.y + mChild2Pos.y), Color::Blue(), 1.5f);
// g.DrawQuad(Rectangle(mParentPos2.x, mParentPos2.y, 50.0f, 50.0f), Color::Red());
// parent = glm::mat4(1.0f);
// parent = glm::translate(parent, mParentPos2);
// g.DrawQuad(Rectangle(mChildPos2.x, mChildPos2.y, 50.0f, 50.0f), Color::White(), nullptr, mChildAngle, Rectangle(-1, -1, -1, -1), parent);
// g.DrawLine(glm::vec2(mParentPos2.x, mParentPos2.y), glm::vec2(mParentPos2.x + mChildPos2.x, mParentPos2.y + mChildPos2.y), Color::Red(), 1.5f);
// g.DrawQuad(Rectangle(mParentPos3.x, mParentPos3.y, 50.0f, 50.0f), Color::Black());
// parent = glm::mat4(1.0f);
// parent = glm::translate(parent, mParentPos3);
// g.DrawQuad(Rectangle(mChildPos3.x, mChildPos3.y, 50.0f, 50.0f), Color(0.75f, 0.15f, 0.5f, 1.0f), nullptr, mChildAngle, Rectangle(-1, -1, -1, -1), parent);
// g.DrawLine(glm::vec2(mParentPos3.x, mParentPos3.y), glm::vec2(mParentPos3.x + mChildPos3.x, mParentPos3.y + mChildPos3.y), Color::Black(), 1.5f);
// parent = glm::translate(parent, mChildPos3);
// g.DrawQuad(Rectangle(mChildPos3_2.x, mChildPos3_2.y, 50.0f, 50.0f), Color(0.75f, 0.15f, 0.5f, 1.0f), nullptr, mChildAngle, Rectangle(-1, -1, -1, -1), parent);
// g.DrawLine(glm::vec2(mParentPos3.x + mChildPos3.x, mParentPos3.y + mChildPos3.y), glm::vec2(mParentPos3.x + mChildPos3.x + mChildPos3_2.x, mParentPos3.y + mChildPos3.y + mChildPos3_2.y), Color::Black(), 1.5f);
}
/////////////////////////////////////////////////////////////////////
@ -425,6 +438,7 @@ namespace lunarium
ImGui::Text("Group One:");
float parent_pos[3] = { mParentPos.x, mParentPos.y, mParentPos.z };
float child_pos[3] = { mChildPos.x, mChildPos.y, mChildPos.z };
float child2_pos[3] = { mChild2Pos.x, mChild2Pos.y, mChild2Pos.z };
ImGui::Text("Parent Position:");
ImGui::SameLine();
@ -435,7 +449,7 @@ namespace lunarium
ImGui::Text("Parent Angle:");
ImGui::SameLine();
ImGui::DragFloat("##ParentAngle", &mParentAngle);
ImGui::DragFloat("##ParentAngle", &mParentAngle, 0.1f);
ImGui::Text("Child Position:");
ImGui::SameLine();
@ -446,46 +460,65 @@ namespace lunarium
ImGui::Text("Child Angle:");
ImGui::SameLine();
ImGui::DragFloat("##ChildAngle", &mChildAngle);
// GROUP TWO
ImGui::Text("Group two:");
float parent_pos2[3] = { mParentPos2.x, mParentPos2.y, mParentPos2.z };
float child_pos2[3] = { mChildPos2.x, mChildPos2.y, mChildPos2.z };
ImGui::DragFloat("##ChildAngle", &mChildAngle, 0.1f);
ImGui::Text("Parent Position:");
ImGui::Text("Child 2 Position:");
ImGui::SameLine();
if (ImGui::DragFloat3("##ParentPos2", parent_pos2))
if (ImGui::DragFloat3("##Child2Pos", child2_pos))
{
mParentPos2 = { parent_pos2[0], parent_pos2[1], parent_pos2[2] };
mChild2Pos = { child2_pos[0], child2_pos[1], child2_pos[2] };
}
ImGui::Text("Child Position:");
ImGui::Text("Child 2 Angle:");
ImGui::SameLine();
if (ImGui::DragFloat3("##ChildPos2", child_pos2))
{
mChildPos2 = { child_pos2[0], child_pos2[1], child_pos2[2] };
}
ImGui::DragFloat("##Child2Angle", &mChild2Angle, 0.1f);
// GROUP THREE
ImGui::Text("Group three:");
float parent_pos3[3] = { mParentPos3.x, mParentPos3.y, mParentPos3.z };
float child_pos3[3] = { mChildPos3.x, mChildPos3.y, mChildPos3.z };
ImGui::Text("Parent Position:");
ImGui::SameLine();
if (ImGui::DragFloat3("##ParentPos3", parent_pos3))
{
mParentPos3 = { parent_pos3[0], parent_pos3[1], parent_pos3[2] };
}
// GROUP TWO
// ImGui::Text("Group two:");
// float parent_pos2[3] = { mParentPos2.x, mParentPos2.y, mParentPos2.z };
// float child_pos2[3] = { mChildPos2.x, mChildPos2.y, mChildPos2.z };
ImGui::Text("Child Position:");
ImGui::SameLine();
if (ImGui::DragFloat3("##ChildPos3", child_pos3))
{
mChildPos3 = { child_pos3[0], child_pos3[1], child_pos3[2] };
}
// ImGui::Text("Parent Position:");
// ImGui::SameLine();
// if (ImGui::DragFloat3("##ParentPos2", parent_pos2))
// {
// mParentPos2 = { parent_pos2[0], parent_pos2[1], parent_pos2[2] };
// }
// ImGui::Text("Child Position:");
// ImGui::SameLine();
// if (ImGui::DragFloat3("##ChildPos2", child_pos2))
// {
// mChildPos2 = { child_pos2[0], child_pos2[1], child_pos2[2] };
// }
// // GROUP THREE
// ImGui::Text("Group three:");
// float parent_pos3[3] = { mParentPos3.x, mParentPos3.y, mParentPos3.z };
// float child_pos3[3] = { mChildPos3.x, mChildPos3.y, mChildPos3.z };
// float child_pos3_2[3] = { mChildPos3_2.x, mChildPos3_2.y, mChildPos3_2.z };
// ImGui::Text("Parent Position:");
// ImGui::SameLine();
// if (ImGui::DragFloat3("##ParentPos3", parent_pos3))
// {
// mParentPos3 = { parent_pos3[0], parent_pos3[1], parent_pos3[2] };
// }
// ImGui::Text("Child Position:");
// ImGui::SameLine();
// if (ImGui::DragFloat3("##ChildPos3", child_pos3))
// {
// mChildPos3 = { child_pos3[0], child_pos3[1], child_pos3[2] };
// }
// ImGui::Text("Child Position:");
// ImGui::SameLine();
// if (ImGui::DragFloat3("##ChildPos3_2", child_pos3_2))
// {
// mChildPos3_2 = { child_pos3_2[0], child_pos3_2[1], child_pos3_2[2] };
// }
}
ImGui::EndChild();

3
src/run_modes/testbed/scenes/simple_render_scene.h
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@ -124,12 +124,15 @@ namespace lunarium
float mParentAngle;
glm::vec3 mChildPos;
float mChildAngle;
glm::vec3 mChild2Pos;
float mChild2Angle;
glm::vec3 mParentPos2;
glm::vec3 mChildPos2;
glm::vec3 mParentPos3;
glm::vec3 mChildPos3;
glm::vec3 mChildPos3_2;
struct GridTestObj
{

14
src/world/world.cpp
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@ -95,10 +95,11 @@ namespace lunarium
glm::mat4 parent_transform = glm::mat4(1.0f);
if (pEnt->HasComponent<ParentEntityComponent>())
{
parent_transform = GetParentTransform(uuid);
parent_transform = GetParentTransform(pEnt->GetComponent<ParentEntityComponent>().Parent);
}
pGraphics->DrawQuad(rect, color, nullptr, -transform.Rotation.z, Rectangle(-1, -1, -1, -1), parent_transform);
pGraphics->DrawQuad(rect, color, nullptr, transform.Rotation.z, Rectangle(-1, -1, -1, -1), parent_transform);
}
}
@ -214,14 +215,17 @@ namespace lunarium
if (p->HasComponent<TransformComponent>())
{
TransformComponent t = p->GetComponent<TransformComponent>();
transform = t.GetTransform();
if (p->HasComponent<ParentEntityComponent>())
{
transform *= GetParentTransform(p->GetComponent<ParentEntityComponent>().Parent);
transform = GetParentTransform(p->GetComponent<ParentEntityComponent>().Parent);
}
TransformComponent t = p->GetComponent<TransformComponent>();
transform = glm::translate(transform, t.Position);
transform = glm::rotate(transform, t.Rotation.z * -1.0f, glm::vec3(0.0f, 0.0f, 1.0f));
}
return transform;

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