a

1 files changed, 39 insertions, 0 deletions

diff --git a/main/camera.cpp b/main/camera.cpp
new file mode 100644
index 00000000..c9fb0391
--- /dev/null
+++ b/main/camera.cpp
@@ -0,0 +1,39 @@
+#include "app.hpp"
+
+namespace Magnum::Examples {
+
+void app::do_camera(float dt)
+{
+    constexpr float pixels_per_second = 512;
+    if (keys[key::camera_up])
+        camera_offset += Vector2(0, 1) * dt * pixels_per_second;
+    else if (keys[key::camera_down])
+        camera_offset += Vector2(0, -1)  * dt * pixels_per_second;
+    if (keys[key::camera_left])
+        camera_offset += Vector2(1, 0) * dt * pixels_per_second;
+    else if (keys[key::camera_right])
+        camera_offset += Vector2(-1, 0)  * dt * pixels_per_second;
+
+    _shader.set_camera_offset(camera_offset);
+
+    if (keys[key::camera_reset])
+        reset_camera_offset();
+}
+
+void app::reset_camera_offset()
+{
+    camera_offset = _shader.project({TILE_MAX_DIM*TILE_SIZE[0]/2.f, TILE_MAX_DIM*TILE_SIZE[1]/2.f, 0});
+    //camera_offset = {};
+}
+
+void app::update_window_scale(Vector2i sz)
+{
+    _shader.set_scale(Vector2{sz});
+}
+
+void app::viewportEvent(Platform::Sdl2Application::ViewportEvent& event)
+{
+    update_window_scale(event.windowSize());
+}
+
+} // namespace Magnum::Examples