#include "physic.hpp"
Physic::Physic()
- : ax(0), ay(0), vx(0), vy(0), gravity_enabled_flag(true)
+ : ax(0), ay(0), vx(0), vy(0), gravity_enabled_flag(true), gravity(10 * 100)
{
}
return gravity_enabled_flag;
}
+void
+Physic::set_gravity(float gravity)
+{
+ this->gravity = gravity * 100;
+}
+
+float
+Physic::get_gravity() const
+{
+ return gravity / 100;
+}
+
Vector
Physic::get_movement(float elapsed_time)
{
- float grav = gravity_enabled_flag ? 1000 : 0;
+ float grav = gravity_enabled_flag ? gravity : 0;
- Vector result(
- vx * elapsed_time + ax * elapsed_time * elapsed_time,
- vy * elapsed_time + (ay + grav) * elapsed_time * elapsed_time
- );
vx += ax * elapsed_time;
vy += (ay + grav) * elapsed_time;
+ Vector result(vx * elapsed_time, vy * elapsed_time);
return result;
}