Partial cython wrapper for Chipmunk 2D physics library (alternative to cymunk)

chipmunk.pxd

from libc.stdint cimport uintptr_t, uint32_t

#Basic/Core Chipmunk Types
cdef extern from "chipmunk/chipmunk.h":    
    ctypedef double cpFloat
    ctypedef struct cpVect:
        cpFloat x,y
    cpVect cpv(cpFloat x, cpFloat y)

#Body
cdef extern from "chipmunk/chipmunk.h":   
    ctypedef enum cpBodyType:
        CP_BODY_TYPE_DYNAMIC
        CP_BODY_TYPE_KINEMATIC
        CP_BODY_TYPE_STATIC

    ctypedef struct cpBody:
        pass

    cpBody * cpBodyNew(cpFloat mass, cpFloat moment)
    cpBody * cpBodyNewKinematic()
    cpBody * cpBodyNewStatic()
    void cpBodyFree(cpBody *body)
    cpFloat cpBodyGetMass(cpBody *body)
    void cpBodySetMass(cpBody *body, cpFloat m)
    cpFloat cpBodyGetMoment(cpBody *body)
    void cpBodySetMoment(cpBody *body, cpFloat m)
    cpVect cpBodyGetPosition(cpBody *body)
    void cpBodySetPosition(cpBody *body, cpVect pos)
    cpVect cpBodyGetCenterOfGravity(cpBody *body)
    void cpBodySetCenterOfGravity(cpBody *body, cpVect cog)
    cpVect cpBodyGetVelocity(cpBody *body)
    void cpBodySetVelocity(cpBody *body, cpVect velocity)
    cpVect cpBodyGetForce(cpBody *body)
    void cpBodySetForce(cpBody *body, cpVect force)
    cpFloat cpBodyGetAngle(cpBody *body)
    void cpBodySetAngle(cpBody *body, cpFloat a)
    cpFloat cpBodyGetAngularVelocity(cpBody *body)
    void cpBodySetAngularVelocity(cpBody *body, cpFloat angularVelocity)
    cpFloat cpBodyGetTorque(cpBody *body)
    void cpBodySetTorque(cpBody *body, cpFloat torque)
    cpVect cpBodyGetRotation(cpBody *body)

#Space
cdef extern from "chipmunk/chipmunk.h":
    ctypedef struct cpSpace:
        pass
    
    cpSpace * cpSpaceNew()
    void cpSpaceFree(cpSpace *space)
    cpVect cpSpaceGetGravity(cpSpace *space)
    void cpSpaceSetGravity(cpSpace *space, cpVect value)
    
    
    cpShape * cpSpaceAddShape(cpSpace *space, cpShape *shape)
    cpBody * cpSpaceAddBody(cpSpace *space, cpBody *body)
    void cpSpaceRemoveShape(cpSpace *space, cpShape *shape)
    void cpSpaceRemoveBody(cpSpace *space, cpBody *body)
    void cpSpaceStep(cpSpace *space, cpFloat dt)
    
#Shape
cdef extern from "chipmunk/chipmunk.h":
    ctypedef struct cpShape:
        pass
    
    #Helper functions
    cpFloat cpMomentForCircle(cpFloat m, cpFloat r1, cpFloat r2, cpVect offset)
    cpFloat cpMomentForSegment(cpFloat m, cpVect a, cpVect b)
    cpFloat cpMomentForPoly(cpFloat m, int numVerts, cpVect *verts, cpVect offset)
    cpFloat cpMomentForBox(cpFloat m, cpFloat width, cpFloat height)
    
    cpShape * cpSegmentShapeNew(cpBody *body, cpVect a, cpVect b, cpFloat radius)
    cpShape * cpCircleShapeNew (cpBody *body, cpFloat radius, cpVect offset)
    void cpShapeFree(cpShape *shape)
    cpFloat cpShapeGetFriction(cpShape *shape)
    void cpShapeSetFriction(cpShape *shape, cpFloat friction)