Add hittable interface and hit infos on hit

1 files changed, 28 insertions, 0 deletions

diff --git a/src/hittable_list.cpp b/src/hittable_list.cpp
new file mode 100644
index 0000000..9140304
--- /dev/null
+++ b/src/hittable_list.cpp
@@ -0,0 +1,28 @@
+#include "hittable_list.hpp"
+
+hittable_list::hittable_list() {};
+
+void hittable_list::add(std::shared_ptr<hittable> hittable) {
+    hittables.push_back(hittable);
+}
+
+void hittable_list::clear() {
+    hittables.clear();
+}
+
+
+bool hittable_list::hit(const ray& r, double t_min, double t_max, struct hit_info& info) const {
+    struct hit_info temp_info;
+    bool hit_anything = false;
+    double closest_hit = t_max;
+
+    for (auto& hittable: hittables) {
+        if (hittable->hit(r, t_min, closest_hit, temp_info)) {
+            hit_anything = true;
+            closest_hit = temp_info.t;
+            info = temp_info;
+        }
+    }
+
+    return hit_anything;
+}