void FlightSimDemo::update()
{
// Find the duration of the last frame in seconds
float duration = (float)TimingData::get().lastFrameDuration * 0.001f;
if (duration <= 0.0f) return;
// Start with no forces or acceleration.
aircraft.clearAccumulators();
// Add the propeller force
cyclone::Vector3 propulsion(-10.0f, 0, 0);
propulsion = aircraft.getTransform().transformDirection(propulsion);
aircraft.addForce(propulsion);
// Add the forces acting on the aircraft.
registry.updateForces(duration);
// Update the aircraft's physics.
aircraft.integrate(duration);
// Do a very basic collision detection and response with the ground.
cyclone::Vector3 pos = aircraft.getPosition();
if (pos.y < 0.0f)
{
pos.y = 0.0f;
aircraft.setPosition(pos);
if (aircraft.getVelocity().y < -10.0f)
{
resetPlane();
}
}
Application::update();
}
void SailboatDemo::display()
{
// Clear the view port and set the camera direction
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glLoadIdentity();
cyclone::Vector3 pos = sailboat.getPosition();
cyclone::Vector3 offset(4.0f, 0, 0);
offset = sailboat.getTransform().transformDirection(offset);
gluLookAt(pos.x+offset.x, pos.y+5.0f, pos.z+offset.z,
pos.x, pos.y, pos.z,
0.0, 1.0, 0.0);
glColor3f(0.6f,0.6f,0.6f);
int bx = int(pos.x);
int bz = int(pos.z);
glBegin(GL_QUADS);
for (int x = -20; x <= 20; x++) for (int z = -20; z <= 20; z++)
{
glVertex3f(bx+x-0.1f, 0, bz+z-0.1f);
glVertex3f(bx+x-0.1f, 0, bz+z+0.1f);
glVertex3f(bx+x+0.1f, 0, bz+z+0.1f);
glVertex3f(bx+x+0.1f, 0, bz+z-0.1f);
}
glEnd();
// Set the transform matrix for the aircraft
cyclone::Matrix4 transform = sailboat.getTransform();
GLfloat gl_transform[16];
transform.fillGLArray(gl_transform);
glPushMatrix();
glMultMatrixf(gl_transform);
// Draw the boat
glColor3f(0,0,0);
drawBoat();
glPopMatrix();
char buffer[256];
sprintf(
buffer,
"Speed %.1f",
sailboat.getVelocity().magnitude()
);
glColor3f(0,0,0);
renderText(10.0f, 24.0f, buffer);
sprintf(
buffer,
"Sail Control: %.1f",
sail_control
);
renderText(10.0f, 10.0f, buffer);
}
void FlightSimDemo::display()
{
// Clear the view port and set the camera direction
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glLoadIdentity();
cyclone::Vector3 pos = aircraft.getPosition();
cyclone::Vector3 offset(4.0f+aircraft.getVelocity().magnitude(), 0, 0);
offset = aircraft.getTransform().transformDirection(offset);
gluLookAt(pos.x+offset.x, pos.y+5.0f, pos.z+offset.z,
pos.x, pos.y, pos.z,
0.0, 1.0, 0.0);
glColor3f(0.6f,0.6f,0.6f);
int bx = int(pos.x);
int bz = int(pos.z);
glBegin(GL_QUADS);
for (int x = -20; x <= 20; x++) for (int z = -20; z <= 20; z++)
{
glVertex3f(bx+x-0.1f, 0, bz+z-0.1f);
glVertex3f(bx+x-0.1f, 0, bz+z+0.1f);
glVertex3f(bx+x+0.1f, 0, bz+z+0.1f);
glVertex3f(bx+x+0.1f, 0, bz+z-0.1f);
}
glEnd();
// Set the transform matrix for the aircraft
cyclone::Matrix4 transform = aircraft.getTransform();
GLfloat gl_transform[16];
transform.fillGLArray(gl_transform);
glPushMatrix();
glMultMatrixf(gl_transform);
// Draw the aircraft
glColor3f(0,0,0);
drawAircraft();
glPopMatrix();
glColor3f(0.8f, 0.8f, 0.8f);
glPushMatrix();
glTranslatef(0, -1.0f - pos.y, 0);
glScalef(1.0f, 0.001f, 1.0f);
glMultMatrixf(gl_transform);
drawAircraft();
glPopMatrix();
char buffer[256];
sprintf(
buffer,
"Altitude: %.1f | Speed %.1f",
aircraft.getPosition().y,
aircraft.getVelocity().magnitude()
);
glColor3f(0,0,0);
renderText(10.0f, 24.0f, buffer);
sprintf(
buffer,
"Left Wing: %.1f | Right Wing: %.1f | Rudder %.1f",
left_wing_control, right_wing_control, rudder_control
);
renderText(10.0f, 10.0f, buffer);
}