void FPSCamera::rotate(float horizontal, float vertical) {
m_rotations.y -= horizontal*0.005f*m_rotateSpeed;
m_rotations.x += vertical*0.005f*m_rotateSpeed;
if(m_rotations.x < -89.f)
m_rotations.x = -89.f;
else if(m_rotations.x > 89.f)
m_rotations.x = 89.f;
glm::mat4 rot;
rot = glm::rotate(rot, m_rotations.y, absoluteUp());
rot = glm::rotate(rot, m_rotations.x, absoluteLeft());
auto p = glm::vec3(rot*glm::vec4(absoluteForward(), 1.f));
/*m_left = -glm::cross(m_forward, absoluteUp());
m_up = glm::cross(m_forward, m_left);
m_target = position + m_forward;
m_viewDirty = true;*/
lookAt(position+p);
}
hkDemo::Result PlanetGravityDemo::stepDemo()
{
// Update lighting
{
// Update the light source to be at the camera
float position[3];
m_cameraPosition.store3( position );
m_flashLight->setPosition( position );
// Update the light direction to be pointing toward the character controller rigid body
hkVector4 directionVector;
directionVector.setSub4( m_cameraPosition, m_characterRigidBody->getPosition() );
directionVector.mul4( -1.0f );
directionVector.normalize3();
float direction[3];
directionVector.store3( direction );
m_flashLight->setDirection( direction );
}
// Detach the camera from the character when P is pressed.
if( m_env->m_window->getKeyboard().wasKeyPressed('P') )
{
m_detachedCamera = !m_detachedCamera;
}
// Update turrets
for( int i = 0; i < m_turrets.getSize(); i++ )
{
Turret& turret = m_turrets[i];
turret.cooldown -= m_timestep;
// Make the turret spin
turret.hinge->setMotorTargetAngle( turret.hinge->getMotorTargetAngle() + ( m_timestep / 5.f ) );
// Bail out if the turret is "hot"
if( turret.cooldown > 0.0f )
{
continue;
}
// Generate a curved raycast and shoot the ray
// This has to be done every time-step as it's in world-space
{
const hkReal radius = 14.8f;
hkRotation rot;
hkVector4 offset;
hkVector4 turretDown;
rot.set( turret.turretRigidBody->getRotation() );
offset = turret.turretRigidBody->getPosition();
turretDown.setMul4( -1.0f, rot.getColumn(2) );
hkpLinearParametricCurve myCurve;
// Move the ray's source a little up so it's coming from the center of the barrel
hkTransform localTransform( hkQuaternion::getIdentity(), hkVector4( 0.0f, 0.0f, 0.7f ) );
// Create a curve of 20 points
for( int j = 0; j < 20; j++ )
{
hkReal angle = HK_REAL_PI * static_cast<hkReal>(j) / 15.0f;
hkVector4 newPoint( radius * 2.0f * sin( angle ),
0.0f,
radius * 2.0f * cos( angle ) );
newPoint.setTransformedPos( localTransform, newPoint );
newPoint.setTransformedPos( turret.turretRigidBody->getTransform(), newPoint );
newPoint.addMul4( radius * 2.0f, turretDown );
myCurve.addPoint( newPoint );
}
// We only need the closest hit (as our lasers can't pass through objects)
// so hkpClosestRayHitCollector is used.
hkpClosestRayHitCollector raycastOutput;
hkReal t = castCurvedRay( raycastOutput, myCurve, 20 );
// Apply a large force to the closest rb we hit, along the tangent at the colliding point
if( raycastOutput.hasHit() )
{
hkpRigidBody* hitRb = hkGetRigidBody( raycastOutput.getHit().m_rootCollidable );
if( hitRb->getMotionType() != hkpMotion::MOTION_FIXED )
{
hkVector4 tangent;
myCurve.getTangent( t, tangent );
tangent.mul4( 15000.0f );
applyScaledLinearImpulse( hitRb, tangent );
turret.cooldown = 3.0f;
}
}
}
}
m_world->markForWrite();
// Update the character context
m_characterRigidBody->m_up = m_worldUp;
hkReal posX = 0.0f;
hkReal posY = 0.0f;
if( !m_detachedCamera )
{
float deltaAngle;
CharacterUtils::getUserInputForCharacter( m_env, deltaAngle, posX, posY );
if( ( ( hkMath::fabs( posX ) < HK_REAL_MAX ) && ( hkMath::fabs( posY ) < HK_REAL_MAX ) ) && ( posX || posY ) )
{
// find new orientation in local space
hkVector4 newForward( -posY, 0.0f, -posX );
hkVector4 absoluteForward( 1.0f, 0.0f, 0.0f );
hkReal characterAngle = hkMath::acos( absoluteForward.dot3( newForward ) );
// Calculate cross product to get sign of rotation.
hkVector4 crossProduct;
crossProduct.setCross( absoluteForward, newForward );
if( crossProduct(1) < 0.0f )
{
characterAngle *= -1.0f;
}
// Rotate the character's rigid body to face in the direction it's moving
hkRotation newRotation;
newRotation.setAxisAngle( m_worldUp, characterAngle );
m_characterForward.setRotatedDir( newRotation, m_cameraForward );
m_characterForward.normalize3();
}
// Rotate the camera's forward vector based on world up vector and mouse movement
if( deltaAngle != 0.0f && m_characterRigidBody->getRigidBody()->getRotation().hasValidAxis() )
{
hkRotation newRotation;
newRotation.setAxisAngle( m_worldUp, deltaAngle );
m_cameraForward.setRotatedDir( newRotation, m_cameraForward );
m_cameraForward.normalize3();
}
}
HK_TIMER_BEGIN( "set character state", HK_NULL );
hkpCharacterInput input;
hkpCharacterOutput output;
{
input.m_atLadder = false;
input.m_inputLR = posX;
input.m_inputUD = posY;
if( m_detachedCamera )
{
input.m_wantJump = false;
}
else
{
input.m_wantJump = m_env->m_window->getMouse().wasButtonPressed( HKG_MOUSE_LEFT_BUTTON )
|| m_env->m_gamePad->wasButtonPressed( HKG_PAD_BUTTON_1 );
}
// Check that we have a valid rotation. Probably won't for the first couple of frames.
if( !( m_characterRigidBody->getRigidBody()->getRotation().hasValidAxis() ) )
{
input.m_up = hkVector4( 0.0f, 0.0f, 1.0f );
input.m_forward = m_cameraForward;
}
else
{
input.m_up = m_worldUp;
// Recalculate m_forward so it's perpendicular to m_worldUp
hkVector4 newRot;
newRot.setCross( m_cameraForward, m_worldUp );
m_cameraForward.setCross( m_worldUp, newRot );
// Display character's current heading
hkRotation characterRotation;
characterRotation.set( m_characterRigidBody->getRigidBody()->getRotation() );
HK_DISPLAY_ARROW( m_characterRigidBody->getPosition(), characterRotation.getColumn(0), hkColor::LIMEGREEN );
input.m_forward = m_cameraForward;
}
hkStepInfo stepInfo;
stepInfo.m_deltaTime = m_timestep;
stepInfo.m_invDeltaTime = 1.0f / m_timestep;
input.m_stepInfo = stepInfo;
input.m_characterGravity.setMul4( -20.0f, m_worldUp );
input.m_velocity = m_characterRigidBody->getRigidBody()->getLinearVelocity();
input.m_position = m_characterRigidBody->getRigidBody()->getPosition();
{
hkpSurfaceInfo ground;
m_characterRigidBody->checkSupport( stepInfo, ground );
// Avoid accidental state changes (Smooth movement on stairs)
// During transition supported->unsupported continue to return N-frames hkpSurfaceInfo data from previous supported state
{
// Number of frames to skip (continue with previous hkpSurfaceInfo data)
const int skipFramesInAir = 6;
if( input.m_wantJump )
{
m_framesInAir = skipFramesInAir;
}
hkpSurfaceInfo* currInfo;
if( ground.m_supportedState != hkpSurfaceInfo::SUPPORTED )
{
if( m_framesInAir < skipFramesInAir )
{
input.m_isSupported = true;
currInfo = m_previousGround;
}
else
{
input.m_isSupported = false;
currInfo = &ground;
}
m_framesInAir++;
}
else
{
input.m_isSupported = true;
currInfo = &ground;
m_previousGround->set( ground );
// reset old number of frames
if( m_framesInAir > skipFramesInAir )
{
m_framesInAir = 0;
}
}
input.m_surfaceNormal = currInfo->m_surfaceNormal;
input.m_surfaceVelocity = currInfo->m_surfaceVelocity;
input.m_surfaceMotionType = currInfo->m_surfaceMotionType;
}
}
HK_TIMER_END();
}
// Apply the character state machine
{
HK_TIMER_BEGIN( "update character state", HK_NULL );
m_characterContext->update( input, output );
HK_TIMER_END();
}
//Apply the player character controller
{
HK_TIMER_BEGIN( "simulate character", HK_NULL );
// Set output velocity from state machine into character rigid body
m_characterRigidBody->setLinearVelocity( output.m_velocity, m_timestep );
HK_TIMER_END();
m_world->unmarkForWrite();
}
// Rotate the character
{
hkRotation newOrientation;
newOrientation.getColumn(0) = m_characterForward;
newOrientation.getColumn(1) = m_worldUp;
newOrientation.getColumn(2).setCross( newOrientation.getColumn(0), newOrientation.getColumn(1) );
newOrientation.renormalize();
reorientCharacter( newOrientation );
}
// Step the world
hkDefaultPhysicsDemo::stepDemo();
// Display state
{
hkpCharacterStateType state = m_characterContext->getState();
char* stateStr;
switch( state )
{
case HK_CHARACTER_ON_GROUND:
{
stateStr = "On Ground";
break;
}
case HK_CHARACTER_JUMPING:
{
stateStr = "Jumping";
break;
}
case HK_CHARACTER_IN_AIR:
{
stateStr = "In Air";
break;
}
default:
{
stateStr = "Other";
break;
}
}
char buffer[255];
hkString::snprintf( buffer, 255, "State : %s", stateStr );
m_env->m_textDisplay->outputText( buffer, 20.f, 270.f, 0xffffffff );
}
//
// Handle crouching (only for capsule)
//
if( !m_detachedCamera )
{
m_world->markForWrite();
hkBool wantCrouch = ( m_env->m_window->getMouse().getButtonState() & HKG_MOUSE_RIGHT_BUTTON )
|| ( m_env->m_gamePad->getButtonState() & HKG_PAD_BUTTON_2 );
hkBool isCrouching = ( m_characterRigidBody->getRigidBody()->getCollidable()->getShape() == m_crouchShape );
// We want to stand
if( isCrouching && !wantCrouch )
{
m_characterRigidBody->getRigidBody()->setShape( m_standShape );
}
// We want to crouch
else if( !isCrouching && wantCrouch )
{
m_characterRigidBody->getRigidBody()->setShape( m_crouchShape );
}
m_world->unmarkForWrite();
}
// Transparent camera handling
if( !m_detachedCamera )
{
m_world->markForWrite();
handleCamera();
m_world->unmarkForWrite();
}
return hkDemo::DEMO_OK;
}
