physics

public/brush.h

@@ -4,6 +4,7 @@
 #include "tier1/utlvector.h"
 #include "rendering.h"
 #include "baseentity.h"
+#include "physics.h"
 
 class CBrushEntity: public CBaseEntity
 {
@@ -14,6 +15,8 @@ public:
 	virtual void Think( float fDelta ) override;
 	
 	CUtlVector<Triangle_t> m_mesh;
+	Collider *m_collider;
+	RigidBodyHandle *m_body;
 };
 
 class C_BrushEntity: public C_BaseEntity

public/physics.h

@@ -0,0 +1,25 @@
+#ifndef PHYSICS_H
+#define PHYSICS_H
+
+#include "tier0/lib.h"
+#include "stdint.h"
+
+
+typedef void Collider;
+typedef void RigidBodyHandle;
+
+template <typename T>
+struct Point {
+    T x, y, z;
+};
+
+typedef struct u128 {
+	uint64_t a;
+	uint64_t b;
+} u128;
+
+#include "physics_gen.h"
+
+extern funnyphysics *px;
+
+#endif

public/physics_gen.h

@@ -0,0 +1,96 @@
+#ifndef RAPIER_H
+#define RAPIER_H
+
+
+
+typedef struct funnyphysics funnyphysics;
+
+typedef struct px_collider_params {
+  float friction;
+} px_collider_params;
+
+typedef struct px_vec3 {
+  float m[3];
+} px_vec3;
+
+typedef struct px_cast_result {
+  int8_t hit;
+  float time;
+  struct px_vec3 witness1;
+  struct px_vec3 witness2;
+  struct px_vec3 normal1;
+  struct px_vec3 normal2;
+} px_cast_result;
+
+typedef struct px_matrix {
+  float m[16];
+} px_matrix;
+
+typedef struct px_rigidbody_params {
+  float velocity[3];
+  float angular_velocity[3];
+  float gravity_scale;
+  float linear_damping;
+  float angular_damping;
+  uint8_t continous;
+  uint8_t sleeping;
+  uint8_t lockrotx;
+  uint8_t lockroty;
+  uint8_t lockrotz;
+  uint8_t lockposx;
+  uint8_t lockposy;
+  uint8_t lockposz;
+  int8_t dominance;
+} px_rigidbody_params;
+
+#ifdef __cplusplus
+extern "C" {
+#endif // __cplusplus
+
+Collider *px_ball(float radius, struct px_collider_params params);
+
+Collider *px_box(float x, float y, float z, struct px_collider_params params);
+
+struct px_cast_result px_box_cast(struct funnyphysics *px_world,
+                                  float x,
+                                  float y,
+                                  float z,
+                                  struct px_vec3 pos,
+                                  struct px_vec3 rot,
+                                  struct px_vec3 vel,
+                                  float time);
+
+void px_frame(struct funnyphysics *px_world, float delta);
+
+struct px_matrix px_getmatrix(struct funnyphysics *px_world, RigidBodyHandle *body);
+
+struct px_vec3 px_getposition(struct funnyphysics *px_world, RigidBodyHandle *body);
+
+struct px_vec3 px_getvelocity(struct funnyphysics *px_world, RigidBodyHandle *body);
+
+struct funnyphysics *px_init(void);
+
+RigidBodyHandle *px_rigidbody(struct funnyphysics *px_world,
+                              Collider *collider,
+                              struct px_matrix m,
+                              struct px_rigidbody_params params);
+
+void px_setposition(struct funnyphysics *px_world, RigidBodyHandle *body, struct px_vec3 vec);
+
+void px_setvelocity(struct funnyphysics *px_world, RigidBodyHandle *body, struct px_vec3 vec);
+
+RigidBodyHandle *px_staticbody(struct funnyphysics *px_world,
+                               Collider *collider,
+                               struct px_matrix m);
+
+Collider *px_trimesh(const Point<float> *ptr_vert,
+                     size_t len_vert,
+                     const uint32_t (*ptr_ind)[3],
+                     size_t len_ind,
+                     struct px_collider_params params);
+
+#ifdef __cplusplus
+}  // extern "C"
+#endif  // __cplusplus
+
+#endif  /* RAPIER_H */