source: GTP-Internal/trunk/App/Demos/Illum/Ocean/Ship.cpp @ 1777

#include "dxstdafx.h"
#include "Ship.h"

Ship::Ship(void)
{
        accelerate = brake = turnLeft = turnRight = false;
        velocity = D3DXVECTOR2(1,1);
        angularVelocity = 0.0;
}

Ship::~Ship(void)
{
}

void Ship::Move(double elapsedTime)
{
        if(accelerate)
        {
                velocity += direction/100; 
        }
        if(brake)
        {
                velocity *= 0.5;
        }
        if(turnLeft)
        {
                if(angularVelocity < 0.174532925) //10 degrees 
                        angularVelocity += 0.8 * elapsedTime;
        }
        if(turnRight)
        {
                if(angularVelocity > -0.174532925) 
                        angularVelocity -= 0.8 * elapsedTime;
        }

        velocity = D3DXVECTOR2(cos(-angularVelocity * elapsedTime) * velocity.x + sin(-angularVelocity * elapsedTime) * velocity.y, -sin(-angularVelocity * elapsedTime) * velocity.x + cos(-angularVelocity * elapsedTime) * velocity.y);
        direction = D3DXVECTOR2(cos(-angularVelocity * elapsedTime) * direction.x + sin(-angularVelocity * elapsedTime) * direction.y, -sin(-angularVelocity * elapsedTime) * direction.x + cos(-angularVelocity * elapsedTime) * direction.y);
        position += velocity * elapsedTime;
}