///
//Translates the RenderingManager's camera according to keyboard input
//
//Parameters:
// GO: The game object this state is attached to
// state: the First Person Camera State updating the gameObject
void State_FirstPersonCamera_Translate(GObject* GO, State* state)
{
Camera* cam = RenderingManager_GetRenderingBuffer().camera;
if(InputManager_GetInputBuffer().mouseLock)
{
Vector netMvmtVec;
Vector partialMvmtVec;
Vector_INIT_ON_STACK(netMvmtVec, 3);
Vector_INIT_ON_STACK(partialMvmtVec, 3);
if (InputManager_IsKeyDown('w'))
{
//Get "back" Vector
Matrix_SliceRow(&partialMvmtVec, cam->rotationMatrix, 2, 0, 3);
//Subtract "back" Vector from netMvmtVec
Vector_Decrement(&netMvmtVec, &partialMvmtVec);
//Or in one step but less pretty... Faster though. I think I want readable here for now though.
//Vector_DecrementArray(netMvmtVec.components, Matrix_Index(cam->rotationMatrix, 2, 0), 3);
}
if (InputManager_IsKeyDown('s'))
{
//Get "back" Vector
Matrix_SliceRow(&partialMvmtVec, cam->rotationMatrix, 2, 0, 3);
//Add "back" Vector to netMvmtVec
Vector_Increment(&netMvmtVec, &partialMvmtVec);
}
if (InputManager_IsKeyDown('a'))
{
//Get "Right" Vector
Matrix_SliceRow(&partialMvmtVec, cam->rotationMatrix, 0, 0, 3);
//Subtract "Right" Vector From netMvmtVec
Vector_Decrement(&netMvmtVec, &partialMvmtVec);
}
if (InputManager_IsKeyDown('d'))
{
//Get "Right" Vector
Matrix_SliceRow(&partialMvmtVec, cam->rotationMatrix, 0, 0, 3);
//Add "Right" Vector to netMvmtVec
Vector_Increment(&netMvmtVec, &partialMvmtVec);
}
float dt = TimeManager_GetDeltaSec();
if (Vector_GetMag(&netMvmtVec) > 0.0f && dt > 0.0f)
{
Vector_Normalize(&netMvmtVec);
Vector_Scale(&netMvmtVec, state->members->movementSpeed * dt);
Camera_Translate(cam, &netMvmtVec);
}
}
}
///
//Accelerates the runner controller
//
//PArameters:
// obj: A pointer to the game object to accelerate
// state: A pointer to rhe runner controller state which is accelerating this object
void State_RunnerController_Accelerate(GObject* obj, State* state)
{
//Grab the state members
struct State_RunnerController_Members* members = (struct State_RunnerController_Members*)state->members;
//Grab the forward vector from the camera
Camera* cam = RenderingManager_GetRenderingBuffer()->camera;
Vector forward;
Vector_INIT_ON_STACK(forward, 3);
Matrix_SliceRow(&forward, cam->rotationMatrix, 2, 0, 3);
//Project the forward vector onto the XY Plane
Vector perp;
Vector_INIT_ON_STACK(perp, 3);
Vector_GetProjection(&perp, &forward, &Vector_E2);
Vector_Decrement(&forward, &perp);
//Scale the vector to the acceleration
Vector_Normalize(&forward);
Vector_Scale(&forward, -members->acceleration);
//Only apply the impulse if the velocity is less than the max speed
if(Vector_GetMag(obj->body->velocity) - fabs(Vector_DotProduct(obj->body->velocity, &Vector_E2)) < members->maxVelocity)
{
//Apply the impulse
RigidBody_ApplyForce(obj->body, &forward, &Vector_ZERO);
}
else
{
printf("Value:\t%f\n", Vector_GetMag(obj->body->velocity) - fabs(Vector_DotProduct(obj->body->velocity, &Vector_E2)));
}
}
///
//Accelerates a gameobject to the degree defined by the state
//
//PArameters:
// obj: The gameobject to accelerate
// state: The ParkourController state attached to the game object
static void State_ParkourController_Accelerate(GObject* obj, State* state)
{
//Grab the state members
struct State_ParkourController_Members* members = (struct State_ParkourController_Members*)state->members;
//Grab the camera
Camera* cam = RenderingManager_GetRenderingBuffer()->camera;
//Determine the direction of acceleration
Vector netForce;
Vector_INIT_ON_STACK(netForce, 3);
Vector direction;
Vector_INIT_ON_STACK(direction, 3);
if(InputManager_IsKeyDown('w'))
{
//Get forward vector of camera
Matrix_SliceRow(&direction, cam->rotationMatrix, 2, 0, 3);
//Project onto XY Plane
Vector perp;
Vector_INIT_ON_STACK(perp, 3);
Vector_GetProjection(&perp, &direction, &Vector_E2);
Vector_Decrement(&direction, &perp);
//Add vector to netForce
//Since this is the cameras "forward vector" we must add the negative of it.
//BEcause forward is the negative Z axis
Vector_Decrement(&netForce, &direction);
}
if(InputManager_IsKeyDown('s'))
{
//Get back vector of camera
//Get forward vector of camera
Matrix_SliceRow(&direction, cam->rotationMatrix, 2, 0, 3);
//Project onto XY Plane
Vector perp;
Vector_INIT_ON_STACK(perp, 3);
Vector_GetProjection(&perp, &direction, &Vector_E2);
Vector_Decrement(&direction, &perp);
//Add vector to netForce
//Since this is the cameras "forward vector" we must add the negative of it.
//BEcause forward is the negative Z axis
Vector_Increment(&netForce, &direction);
}
if(InputManager_IsKeyDown('d'))
{
//Get forward vector of camera
Matrix_SliceRow(&direction, cam->rotationMatrix, 0, 0, 3);
//Project onto XY Plane
Vector perp;
Vector_INIT_ON_STACK(perp, 3);
Vector_GetProjection(&perp, &direction, &Vector_E2);
Vector_Decrement(&direction, &perp);
//Add vector to netForce
//Since this is the cameras "forward vector" we must add the negative of it.
//BEcause forward is the negative Z axis
Vector_Increment(&netForce, &direction);
}
if(InputManager_IsKeyDown('a'))
{
//Get forward vector of camera
Matrix_SliceRow(&direction, cam->rotationMatrix, 0, 0, 3);
//Project onto XY Plane
Vector perp;
Vector_INIT_ON_STACK(perp, 3);
Vector_GetProjection(&perp, &direction, &Vector_E2);
Vector_Decrement(&direction, &perp);
//Add vector to netForce
//Since this is the cameras "forward vector" we must add the negative of it.
//BEcause forward is the negative Z axis
Vector_Decrement(&netForce, &direction);
}
//Scale netforce to the acceleration magnitude
Vector_Normalize(&netForce);
Vector_Scale(&netForce, members->acceleration);
//Only apply impulse if velocity is less than max speed
if(Vector_GetMag(obj->body->velocity) < members->maxVelocity)
{
//Apply the impulse
RigidBody_ApplyForce(obj->body, &netForce, &Vector_ZERO);
}
else
{
//Limit velocity
Vector_Normalize(obj->body->velocity);
Vector_Scale(obj->body->velocity, members->maxVelocity);
}
}
// translate the character and his bounding box.
// Parameters:
// GO: The game object this state is attached to (Used for translating the bounding box)
// state: The first person camera state updating the gameObject
void State_CharacterController_Translate(GObject* GO, State* state)
{
Camera* cam = RenderingManager_GetRenderingBuffer()->camera;
//Get members
struct State_CharacterController_Members* members = (struct State_CharacterController_Members*)state->members;
if(InputManager_GetInputBuffer().mouseLock)
{
// Gets the time per second
float dt = TimeManager_GetDeltaSec();
Vector netMvmtVec;
Vector partialMvmtVec;
Vector_INIT_ON_STACK(netMvmtVec, 3);
Vector_INIT_ON_STACK(partialMvmtVec, 3);
if (InputManager_IsKeyDown('w'))
{
//Get "back" Vector
Matrix_SliceRow(&partialMvmtVec, cam->rotationMatrix, 2, 0, 3);
//Subtract "back" Vector from netMvmtVec
Vector_Decrement(&netMvmtVec, &partialMvmtVec);
//Or in one step but less pretty... Faster though. I think I want readable here for now though.
//Vector_DecrementArray(netMvmtVec.components, Matrix_Index(cam->rotationMatrix, 2, 0), 3);
}
if (InputManager_IsKeyDown('s'))
{
//Get "back" Vector
Matrix_SliceRow(&partialMvmtVec, cam->rotationMatrix, 2, 0, 3);
//Add "back" Vector to netMvmtVec
Vector_Increment(&netMvmtVec, &partialMvmtVec);
}
if (InputManager_IsKeyDown('a'))
{
//Get "Right" Vector
Matrix_SliceRow(&partialMvmtVec, cam->rotationMatrix, 0, 0, 3);
//Subtract "Right" Vector From netMvmtVec
Vector_Decrement(&netMvmtVec, &partialMvmtVec);
}
if (InputManager_IsKeyDown('d'))
{
//Get "Right" Vector
Matrix_SliceRow(&partialMvmtVec, cam->rotationMatrix, 0, 0, 3);
//Add "Right" Vector to netMvmtVec
Vector_Increment(&netMvmtVec, &partialMvmtVec);
}
if (Vector_GetMag(&netMvmtVec) > 0.0f)
{
// Get the projection and keep player grounded
Vector perpMvmtVec;
Vector_INIT_ON_STACK(perpMvmtVec, 3);
Vector_GetProjection(&perpMvmtVec, &netMvmtVec, &Vector_E2);
Vector_Decrement(&netMvmtVec, &perpMvmtVec);
// Normalize vector and scale
Vector_Normalize(&netMvmtVec);
Vector_Scale(&netMvmtVec, members->movementSpeed);
//Apply Impulse
RigidBody_ApplyImpulse(GO->body, &netMvmtVec, &Vector_ZERO);
}
}
// If vector is going too fast, the maxspeed will keep it from going faster, by scaling it by maxspeed.
if(Vector_GetMag(GO->body->velocity) >= members->maxSpeed)
{
Vector_Normalize(GO->body->velocity);
Vector_Scale(GO->body->velocity,members->maxSpeed);
}
// Set position of Camera to the body
Camera_SetPosition(cam,GO->body->frame->position);
}
