wip vobj

1 files changed, 42 insertions, 0 deletions

diff --git a/src/light.cpp b/src/light.cpp
new file mode 100644
index 00000000..64da857b
--- /dev/null
+++ b/src/light.cpp
@@ -0,0 +1,42 @@
+#include "light.hpp"
+#include "shaders/shader.hpp"
+#include <cmath>
+
+namespace floormat {
+
+light_proto::light_proto() = default;
+light_proto::light_proto(const light_proto&) = default;
+light_proto& light_proto::operator=(const light_proto&) = default;
+light_proto::~light_proto() noexcept = default;
+bool light_proto::operator==(const light_proto&) const = default;
+
+light::light(object_id id, struct chunk& c, const light_proto& proto) :
+    entity{id, c, proto},
+    half_dist{proto.half_dist},
+    color{proto.color},
+    falloff{proto.falloff}
+{
+}
+
+float light::depth_offset() const
+{
+    constexpr auto ret = 4.f / tile_shader::depth_tile_size;
+    return ret;
+}
+
+Vector2 light::ordinal_offset(Vector2b) const { return {}; }
+entity_type light::type() const noexcept { return entity_type::light; }
+bool light::update(size_t, float) { return false; }
+bool light::is_virtual() const { return true; }
+
+float light::calc_intensity(float half_dist, light_falloff falloff)
+{
+    switch (falloff)
+    {
+    case light_falloff::linear: return 2 * half_dist;
+    case light_falloff::quadratic: return std::sqrt(2 * half_dist);
+    default: case light_falloff::constant: return 1;
+    }
+}
+
+} // namespace floormat