X-Git-Url: http://git.localhorst.tv/?a=blobdiff_plain;f=src%2Fphysics%2FState.hpp;h=1a643107c5470a8c180e498f2b512f33f20a5155;hb=f00a3e9078ef12a01c371d9d3df2ea7b3d9b2525;hp=76ff16cc3029c7a9b38dc9422f0cae8fce0efec5;hpb=48d34439f3d5bc8bebabe9f0ee35970359e61bfa;p=gong.git

diff --git a/src/physics/State.hpp b/src/physics/State.hpp
index 76ff16c..1a64310 100644
--- a/src/physics/State.hpp
+++ b/src/physics/State.hpp
@@ -29,6 +29,12 @@ struct State {
 	float inertia;
 	/// 1/inertia
 	float inverse_inertia;
+
+	/// calculate velocity at given point
+	/// (same coordinate system as used by pos)
+	glm::vec3 VelAt(const glm::vec3 &p) const noexcept {
+		return (lin * inverse_mass) + glm::cross((ang * inverse_inertia), p - pos);
+	}
 };
 
 }