Expose getPointedThing to Lua

This commit introduces Raycast, a Lua user object, which can be
used to perform a raycast on the map. The ray is continuable, so one can
also get hidden nodes (for example to see trough glass).

1 files changed, 26 insertions, 0 deletions

diff --git a/src/content_sao.cpp b/src/content_sao.cpp
index c6c00768e..5bbbd154d 100644
--- a/src/content_sao.cpp
+++ b/src/content_sao.cpp
@@ -91,6 +91,9 @@ public:
 	}
 
 	bool getCollisionBox(aabb3f *toset) const { return false; }
+
+	virtual bool getSelectionBox(aabb3f *toset) const { return false; }
+
 	bool collideWithObjects() const { return false; }
 
 private:
@@ -746,6 +749,18 @@ bool LuaEntitySAO::getCollisionBox(aabb3f *toset) const
 	return false;
 }
 
+bool LuaEntitySAO::getSelectionBox(aabb3f *toset) const
+{
+	if (!m_prop.is_visible) {
+		return false;
+	}
+
+	toset->MinEdge = m_prop.collisionbox.MinEdge * BS;
+	toset->MaxEdge = m_prop.collisionbox.MaxEdge * BS;
+
+	return true;
+}
+
 bool LuaEntitySAO::collideWithObjects() const
 {
 	return m_prop.collideWithObjects;
@@ -1405,3 +1420,14 @@ bool PlayerSAO::getCollisionBox(aabb3f *toset) const
 	toset->MaxEdge += m_base_position;
 	return true;
 }
+
+bool PlayerSAO::getSelectionBox(aabb3f *toset) const
+{
+	if (!m_prop.is_visible) {
+		return false;
+	}
+
+	getCollisionBox(toset);
+
+	return true;
+}