static int l_physics_setBodyCenterOfGravity(lua_State* state)
{
l_tools_checkUserDataPlusErrMsg(state, 1, "You must provide a body");
l_physics_Body* body = (l_physics_Body*)lua_touserdata(state, 1);
cpVect value = cpvzero;
value.x = l_tools_toNumberOrError(state, 2);
value.y = l_tools_toNumberOrError(state, 3);
cpBodySetCenterOfGravity(body->body, value);
return 0;
}
void RigidBody2D::SetMassCenter(const Vector2f& center, CoordSys coordSys)
{
cpVect massCenter = cpv(center.x, center.y);
switch (coordSys)
{
case CoordSys_Global:
massCenter = cpBodyWorldToLocal(m_handle, massCenter);
break;
case CoordSys_Local:
break; // Nothing to do
}
cpBodySetCenterOfGravity(m_handle, massCenter);
}
Ship(int vn, cpVect* vl, cpVect pos, Genome* ng = 0)
{
float mass = cpAreaForPoly(vn, vl, 0) * ship_density;
float moi = cpMomentForPoly(mass, vn, vl, cpv(0, 0), 0);
body = cpBodyNew(mass, moi);
cpshape = cpPolyShapeNew(body, vn, vl, cpTransformIdentity, 0);
cpShapeSetFriction(cpshape, 0.9);
cpVect centroid = cpCentroidForPoly(vn, vl);
shape.setPointCount(vn);
for (int i = 0; i < vn; i++)
{
shape.setPoint(i, sf::Vector2f(vl[i].x, vl[i].y));
}
cpBodySetCenterOfGravity(body, centroid);
cpBodySetPosition(body, pos-centroid);
cpBodySetVelocity(body, cpv(0, 0));
cpShapeSetCollisionType(cpshape, 1);
cpShapeSetUserData(cpshape, this);
last_fired = 0;
nose_angle = PI/2;
player = false;
target = 0;
score = 0;
if (ng == 0)
{
Genome* braingenome = mutate(readgenome("shipmind.mind"));
brain = braingenome->makenetwork();
delete braingenome;
}
else
{
brain = ng->makenetwork();
}
score = 0;
}
void RigidBody2D::SetMassCenter(const Vector2f& center)
{
cpBodySetCenterOfGravity(m_handle, cpv(center.x, center.y));
}