void
Sector::collision_static_constrains(MovingObject& object)
{
using namespace collision;
float infinity = (std::numeric_limits<float>::has_infinity ? std::numeric_limits<float>::infinity() : std::numeric_limits<float>::max());
Constraints constraints;
Vector movement = object.get_movement();
Vector pressure = Vector(0,0);
Rectf& dest = object.dest;
for(int i = 0; i < 2; ++i) {
collision_static(&constraints, Vector(0, movement.y), dest, object);
if(!constraints.has_constraints())
break;
// apply calculated horizontal constraints
if(constraints.get_position_bottom() < infinity) {
float height = constraints.get_height ();
if(height < object.get_bbox().get_height()) {
// we're crushed, but ignore this for now, we'll get this again
// later if we're really crushed or things will solve itself when
// looking at the vertical constraints
pressure.y += object.get_bbox().get_height() - height;
} else {
dest.p2.y = constraints.get_position_bottom() - DELTA;
dest.p1.y = dest.p2.y - object.get_bbox().get_height();
}
} else if(constraints.get_position_top() > -infinity) {
dest.p1.y = constraints.get_position_top() + DELTA;
dest.p2.y = dest.p1.y + object.get_bbox().get_height();
}
}
if(constraints.has_constraints()) {
if(constraints.hit.bottom) {
dest.move(constraints.ground_movement);
}
if(constraints.hit.top || constraints.hit.bottom) {
constraints.hit.left = false;
constraints.hit.right = false;
object.collision_solid(constraints.hit);
}
}
constraints = Constraints();
for(int i = 0; i < 2; ++i) {
collision_static(&constraints, movement, dest, object);
if(!constraints.has_constraints())
break;
// apply calculated vertical constraints
float width = constraints.get_width ();
if(width < infinity) {
if(width + SHIFT_DELTA < object.get_bbox().get_width()) {
// we're crushed, but ignore this for now, we'll get this again
// later if we're really crushed or things will solve itself when
// looking at the horizontal constraints
pressure.x += object.get_bbox().get_width() - width;
} else {
float xmid = constraints.get_x_midpoint ();
dest.p1.x = xmid - object.get_bbox().get_width()/2;
dest.p2.x = xmid + object.get_bbox().get_width()/2;
}
} else if(constraints.get_position_right() < infinity) {
dest.p2.x = constraints.get_position_right() - DELTA;
dest.p1.x = dest.p2.x - object.get_bbox().get_width();
} else if(constraints.get_position_left() > -infinity) {
dest.p1.x = constraints.get_position_left() + DELTA;
dest.p2.x = dest.p1.x + object.get_bbox().get_width();
}
}
if(constraints.has_constraints()) {
if( constraints.hit.left || constraints.hit.right
|| constraints.hit.top || constraints.hit.bottom
|| constraints.hit.crush )
object.collision_solid(constraints.hit);
}
// an extra pass to make sure we're not crushed vertically
if (pressure.y > 0) {
constraints = Constraints();
collision_static(&constraints, movement, dest, object);
if(constraints.get_position_bottom() < infinity) {
float height = constraints.get_height ();
if(height + SHIFT_DELTA < object.get_bbox().get_height()) {
CollisionHit h;
h.top = true;
h.bottom = true;
h.crush = pressure.y > 16;
object.collision_solid(h);
}
}
}
// an extra pass to make sure we're not crushed horizontally
if (pressure.x > 0) {
constraints = Constraints();
collision_static(&constraints, movement, dest, object);
if(constraints.get_position_right() < infinity) {
float width = constraints.get_width ();
if(width + SHIFT_DELTA < object.get_bbox().get_width()) {
CollisionHit h;
h.top = true;
h.bottom = true;
h.left = true;
h.right = true;
h.crush = pressure.x > 16;
object.collision_solid(h);
}
}
}
}
