use RK4 to integrate creature state

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

diff --git a/src/creature/Creature.hpp b/src/creature/Creature.hpp
index 2a40d510407e4ff791a3e16c3d9b718066ca2d93..e2f9b446ab010600a4541d78449d21f949aea168 100644 (file)
--- a/src/creature/Creature.hpp
+++ b/src/creature/Creature.hpp
@@ -3,6 +3,7 @@
 
 #include "Genome.hpp"
 #include "Goal.hpp"
+#include "Memory.hpp"
 #include "Need.hpp"
 #include "Situation.hpp"
 #include "Steering.hpp"
@@ -30,6 +31,9 @@ namespace creature {
 
 class Creature {
 
+public:
+       using Callback = std::function<void(Creature &)>;
+
 public:
        explicit Creature(world::Simulation &);
        ~Creature();
@@ -50,15 +54,31 @@ public:
        Genome &GetGenome() noexcept { return genome; }
        const Genome &GetGenome() const noexcept { return genome; }
 
-       void Mass(double m) noexcept { mass = m; }
+       Genome::Properties<double> &GetProperties() noexcept { return properties; }
+       const Genome::Properties<double> &GetProperties() const noexcept { return properties; }
+
+       void Mass(double m) noexcept { mass = m; size = std::cbrt(mass / density); }
        double Mass() const noexcept { return mass; }
+       void Grow(double amount) noexcept;
 
-       void Size(double s) noexcept { size = s; }
-       double Size() const noexcept { return size; }
+       void Density(double d) noexcept { density = d; size = std::cbrt(mass / density); }
+       double Density() const noexcept { return density; }
+
+       double Size() const noexcept;
+       double Age() const noexcept;
+       // change of giving birth per tick
+       double Fertility() const noexcept;
 
        void Health(double h) noexcept { health = h; }
        double Health() const noexcept { return health; }
        void Hurt(double d) noexcept;
+       void Die() noexcept;
+       void OnDeath(Callback cb) noexcept { on_death = cb; }
+       void Remove() noexcept { removable = true; }
+       bool Removable() const noexcept { return removable; }
+
+       Memory &GetMemory() noexcept { return memory; }
+       const Memory &GetMemory() const noexcept { return memory; }
 
        void AddNeed(std::unique_ptr<Need> &&n) { needs.emplace_back(std::move(n)); }
        const std::vector<std::unique_ptr<Need>> &Needs() const noexcept { return needs; }
@@ -74,24 +94,31 @@ public:
        Steering &GetSteering() noexcept { return steering; }
        const Steering &GetSteering() const noexcept { return steering; }
 
-       void Velocity(const glm::dvec3 &v) noexcept { vel = v; }
-       const glm::dvec3 &Velocity() const noexcept { return vel; }
-       bool Moving() const noexcept { return glm::length2(vel) < 0.000001; }
-
        glm::dmat4 LocalTransform() noexcept;
 
        void BuildVAO();
-       void Draw(app::Assets &, graphics::Viewport &);
+       void Draw(graphics::Viewport &);
+
+private:
+       Situation::Derivative Step(const Situation::Derivative &ds, double dt) const noexcept;
 
 private:
        world::Simulation &sim;
        std::string name;
 
        Genome genome;
+       Genome::Properties<double> properties;
 
        double mass;
+       double density;
        double size;
+
+       double birth;
        double health;
+       Callback on_death;
+       bool removable;
+
+       Memory memory;
 
        std::vector<std::unique_ptr<Need>> needs;
        std::vector<std::unique_ptr<Goal>> goals;
@@ -99,8 +126,6 @@ private:
        Situation situation;
        Steering steering;
 
-       glm::dvec3 vel;
-
        struct Attributes {
                glm::vec3 position;
                glm::vec3 normal;
@@ -111,7 +136,10 @@ private:
 };
 
 /// put creature on planet and configure it to (hopefully) survive
-void Spawn(Creature &, world::Planet &, app::Assets &);
+void Spawn(Creature &, world::Planet &);
+
+/// split the creature into two
+void Split(Creature &);
 
 }
 }