face direction

[blobs.git] / src / creature / Situation.hpp

diff --git a/src/creature/Situation.hpp b/src/creature/Situation.hpp
index f29d9b08b96b0e5c07c4bb588e5a1f0cfa896928..6b2bac0500f4dcc958040ce4fd8192693af51365 100644 (file)
--- a/src/creature/Situation.hpp
+++ b/src/creature/Situation.hpp
@@ -16,20 +16,30 @@ class Situation {
 
 public:
        struct State {
+               // position
                glm::dvec3 pos;
+               // velocity
                glm::dvec3 vel;
+               // face direction, normalized
+               glm::dvec3 dir;
                State(
                        const glm::dvec3 &pos = glm::dvec3(0.0),
-                       const glm::dvec3 &vel = glm::dvec3(0.0))
-               : pos(pos), vel(vel) { }
+                       const glm::dvec3 &vel = glm::dvec3(0.0),
+                       const glm::dvec3 &dir = glm::dvec3(0.0, 0.0, -1.0))
+               : pos(pos), vel(vel), dir(dir) { }
        };
        struct Derivative {
+               // velocity
                glm::dvec3 vel;
+               // acceleration
                glm::dvec3 acc;
+               // orientation adjust
+               glm::dvec3 turn;
                Derivative(
                        const glm::dvec3 &vel = glm::dvec3(0.0),
-                       const glm::dvec3 &acc = glm::dvec3(0.0))
-               : vel(vel), acc(acc) { }
+                       const glm::dvec3 &acc = glm::dvec3(0.0),
+                       const glm::dvec3 &turn = glm::dvec3(0.0))
+               : vel(vel), acc(acc), turn(turn) { }
        };
 
 public:
@@ -59,6 +69,9 @@ public:
        const glm::dvec3 &Velocity() const noexcept { return state.vel; }
        bool Moving() const noexcept { return glm::length2(state.vel) < 0.00000001; }
        void Move(const glm::dvec3 &dp) noexcept;
+
+       const glm::dvec3 &Heading() const noexcept { return state.dir; }
+
        void SetPlanetSurface(world::Planet &, int srf, const glm::dvec3 &pos) noexcept;
 
 public: