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Fix collision radius size when zooming

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This commit is contained in:
Jan Mrna 2025-10-12 16:19:38 +02:00
parent 1ce793c6e8
commit df6d323e42
2 changed files with 16 additions and 3 deletions
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12
cpp/src/camera.hpp
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@ -16,6 +16,18 @@ public:
WindowSize WorldToWindowSize(WorldSize) const;
WorldSize WindowToWorldSize(WindowSize) const;
template <typename T>
requires std::floating_point<T>
T WindowToWorldSize(T window_size) const {
return window_size / static_cast<T>(m_Zoom);
}
template <typename T>
requires std::floating_point<T>
T WorldToWindowSize(T world_size) const {
return world_size * static_cast<T>(m_Zoom);
}
private:
// TODO this should be replaced with a matrix
float m_Zoom = 1.0f;

7
cpp/src/gameloop.cpp
View File

@ -43,13 +43,14 @@ void GameLoop::Draw() {
// draw all the entities (player etc)
for (auto &entity : m_Game->GetEntities()) {
const auto &camera = m_Game->GetCamera();
auto entity_pos_window = camera.WorldToWindow(entity->GetPosition());
m_Window->DrawSprite(entity_pos_window,
auto entity_pos = camera.WorldToWindow(entity->GetPosition());
m_Window->DrawSprite(entity_pos,
entity->GetSprite(),
camera.GetZoom());
if (entity->IsCollisionBoxVisible())
{
m_Window->DrawCircle(entity_pos_window, entity->GetCollisionRadius());
float collision_radius = camera.WorldToWindowSize(entity->GetCollisionRadius());
m_Window->DrawCircle(entity_pos, collision_radius);
}
}