| 1 | #include "PhysicsEntity.h" |
| 2 | #include "../Vector2.h" |
| 3 | |
| 4 | /// ***** Public Class Methods ***** |
| 5 | PhysicsEntity::PhysicsEntity(const Vector2& pos) |
| 6 | : Entity(pos) |
| 7 | { |
| 8 | |
| 9 | } |
| 10 | PhysicsEntity::~PhysicsEntity() |
| 11 | { |
| 12 | |
| 13 | } |
| 14 | |
| 15 | void PhysicsEntity::update(float time_step) |
| 16 | { |
| 17 | position = positionAt(time_step); |
| 18 | velocity = velocityAt(time_step); |
| 19 | |
| 20 | force *= 0; |
| 21 | } |
| 22 | |
| 23 | Vector2 PhysicsEntity::positionAt(float time_step) const |
| 24 | { |
| 25 | return force/mass / 2 * time_step * time_step + velocity * time_step + position; |
| 26 | } |
| 27 | |
| 28 | Vector2 PhysicsEntity::velocityAt(float time_step) const |
| 29 | { |
| 30 | return force/mass / 2 * time_step + velocity; |
| 31 | } |
| 32 | |
| 33 | void PhysicsEntity::applyForce(const Vector2& force) |
| 34 | { |
| 35 | this->force += force; |
| 36 | } |
| 37 | |
| 38 | void PhysicsEntity::applyImpulse(const Vector2& impluse) |
| 39 | { |
| 40 | velocity += impluse; |
| 41 | } |