///
//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)));
}
}
///
//Updates a force state by applying the defined force to the GObject
//
//Parameters:
// GO: A pointer to the game object to apply the force to
// state: A pointer to the state updating the attached object
void State_Force_Update(GObject* GO, State* state)
{
struct State_Force_Members* members = (struct State_Force_Members*)state->members;
RigidBody_ApplyForce(GO->body, members->force, members->radius);
}
///
//Allows the runner controller to wallrun if necessary conditions are met
//
//Parameters:
// obj: A pointer to the object which is running on walls
// state: A pointer to the runner controller state which is allowing the object to wallrun
void State_RunnerController_Wallrun(GObject* obj, State* state)
{
//Get the members of this state
struct State_RunnerController_Members* members = (struct State_RunnerController_Members*)state->members;
//Get the first collision this object is involved in
Collision* first = (Collision*)obj->collider->currentCollisions->head->data;
//If we are not wallrunning yet
if(members->horizontalRunning == 0 && members->verticalRunning == 0)
{
//Make sure this is a wall
if(first->minimumTranslationVector->components[0] != 0.0 || first->minimumTranslationVector->components[2] != 0.0f)
{
//Save the normal
Vector_Copy(members->wallNormal, first->minimumTranslationVector);
if(first->obj1 != obj)
{
Vector_Scale(members->wallNormal, -1.0f);
}
//Determine what kind of wallrun is occurring
//First get the forward vector of 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);
Vector_Normalize(&forward);
//Get dot product of forward vector and collision normal
float dotProd = fabs(Vector_DotProduct(&forward, first->minimumTranslationVector));
//If the dot product is closer to 0 we are horizontal running, else we are vertical running
if(dotProd < 0.75)
{
members->horizontalRunning = 1;
}
else
{
members->verticalRunning = 1;
}
}
}
//If we are horizontal running
if(members->horizontalRunning == 1)
{
printf("Horizontal Wallrunnin\n");
//combat the force of gravity
Vector antiGravity;
Vector_INIT_ON_STACK(antiGravity, 3);
antiGravity.components[1] = 9.81f;
RigidBody_ApplyForce(obj->body, &antiGravity, &Vector_ZERO);
//Zero downward velocity
if(obj->body->velocity->components[1] < 0.0f)
{
Vector_Copy(&antiGravity, &Vector_ZERO);
antiGravity.components[1] = -obj->body->velocity->components[1];
RigidBody_ApplyImpulse(obj->body, &antiGravity, &Vector_ZERO);
}
State_RunnerController_Accelerate(obj, state);
}
else if(members->verticalRunning == 1)
{
printf("Vertical Wallrunnin\n");
//combat the force of gravity
Vector antiGravity;
Vector_INIT_ON_STACK(antiGravity, 3);
Vector_Copy(&antiGravity, &Vector_E2);
//go up!
Vector_Scale(&antiGravity, 9.81);
RigidBody_ApplyForce(obj->body, &antiGravity, &Vector_ZERO);
//If we aren't jumping too fast yet
if(Vector_DotProduct(obj->body->velocity, &Vector_E2) < members->maxVelocity)
{
Vector_Copy(&antiGravity, &Vector_E2);
Vector_Scale(&antiGravity, members->acceleration);
RigidBody_ApplyForce(obj->body, &antiGravity, &Vector_ZERO);
}
}
}
///
//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);
}
}
