random walks

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

diff --git a/src/creature/Situation.hpp b/src/creature/Situation.hpp
index f29d9b08b96b0e5c07c4bb588e5a1f0cfa896928..561f106c78b848ce3f4ca6c79a7b44c81c747e99 100644 (file)
--- a/src/creature/Situation.hpp
+++ b/src/creature/Situation.hpp
@@ -16,15 +16,22 @@ 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;
                Derivative(
                        const glm::dvec3 &vel = glm::dvec3(0.0),
@@ -46,10 +53,7 @@ public:
        bool OnPlanet() const noexcept;
        world::Planet &GetPlanet() const noexcept { return *planet; }
        bool OnSurface() const noexcept;
-       int Surface() const noexcept { return surface; }
        const glm::dvec3 &Position() const noexcept { return state.pos; }
-       bool OnTile() const noexcept;
-       glm::ivec2 SurfacePosition() const noexcept;
        world::Tile &GetTile() const noexcept;
        const world::TileType &GetTileType() const noexcept;
 
@@ -57,14 +61,20 @@ public:
        const State &GetState() const noexcept { return state; }
 
        const glm::dvec3 &Velocity() const noexcept { return state.vel; }
-       bool Moving() const noexcept { return glm::length2(state.vel) < 0.00000001; }
+       bool Moving() const noexcept { return glm::length2(state.vel) > 0.000001; }
        void Move(const glm::dvec3 &dp) noexcept;
-       void SetPlanetSurface(world::Planet &, int srf, const glm::dvec3 &pos) noexcept;
+       void Accelerate(const glm::dvec3 &dv) noexcept;
+       void EnforceConstraints(State &) noexcept;
+       void CheckWrap() noexcept;
+
+       void Heading(const glm::dvec3 &h) noexcept { state.dir = h; }
+       const glm::dvec3 &Heading() const noexcept { return state.dir; }
+
+       void SetPlanetSurface(world::Planet &, const glm::dvec3 &pos) noexcept;
 
 public:
        world::Planet *planet;
        State state;
-       int surface;
        enum {
                LOST,
                PLANET_SURFACE,