void Test::SendMsg(EntityPtr e1, EntityPtr e2, Message::Message message)
{
EntityPtr camera = ENGINE->GetSpace("Particle Demo")->GetCamera();
switch (message)
{
case(Message::MV_Up) :
camera->GET_COMPONENT(Transform)->position.y += 1000.f * ENGINE->Getdt();
break;
case(Message::MV_Down) :
camera->GET_COMPONENT(Transform)->position.y -= 1000.f * ENGINE->Getdt();
break;
case(Message::MV_Left) :
camera->GET_COMPONENT(Transform)->position.x -= 1000.f * ENGINE->Getdt();
break;
case(Message::MV_Right) :
camera->GET_COMPONENT(Transform)->position.x += 1000.f * ENGINE->Getdt();
break;
case(Message::MV_BackButton) :
ENGINE->PushGamestate(PauseMenuPtr(new PauseMenu()));
break;
case(Message::MV_PopGamestate) :
ENGINE->PopGamestate();
break;
default:
break;
}
}
void Test::Update(float dt)
{
switch (DemoToUse)
{
case(Demo::Pretzel) :
PretzelDemo(dt);
break;
case(Demo::FireBall) :
FireBallDemo(dt);
break;
case Demo::Explosion:
ExplosionDemo(200);
break;
default:
break;
}
// This is wrapped in a try catch block because it's possible the entity acquired by name doesn't have the necessary components.
// If that is the case, the try block will encounter and exception, that gets handled by just ignoring the operation and moving on.
try
{
EntityPtr mouse = ENGINE->GetActiveSpace()->GetEntityByName("Mouse");
mouse->GET_COMPONENT(Transform)->position = GETSYS(WindowSDL)->GetMousePosition();
mouse->GET_COMPONENT(Transform)->scale = { 10.f, 10.f };
}
catch (...)
{
}
}
void WeaponController::FireWeapon(EntityPtr entity)
{
WeaponPtr weapon = entity->GET_COMPONENT(Weapon);
TransformPtr transform = entity->GET_COMPONENT(Transform);
if (weapon->shotCooldownRemaining > 0.f)
return;
// Reset the shot cooldown because the weapon should only shoot at its rate of fire.
weapon->shotCooldownRemaining = weapon->rateOfFire;
weapon->shots += 1;
EntityPtr bullet = ENGINE->Factory().create("Bullet");
bullet->GET_COMPONENT(Parent)->parent = entity;
// Start the bullet at the shooter's location
bullet->GET_COMPONENT(Transform)->position = transform->position;
bullet->GET_COMPONENT(Transform)->rotation = transform->rotation;
// Set up the physics info for the bullet
float direction = transform->rotation * DEG2RAD;
bullet->GET_COMPONENT(RigidBody)->direction = glm::normalize(glm::vec2(cos(direction), sin(direction)));
bullet->GET_COMPONENT(RigidBody)->speed = weapon->projectileSpeed;
// Set the duration of the bullet
bullet->GET_COMPONENT(Lifetime)->lifetime = weapon->projectileLifetime;
// Add the bullet to the world!
ENGINE->GetActiveSpace()->AddEntity(bullet);
}
void Test::ExplosionSpawn(unsigned count)
{
// Get a reference to the "Game World" space so that we can add an object to it.
SpacePtr gameworld = ENGINE->GetSpace("Game World");
gameworld->GetCamera()->GET_COMPONENT(Transform)->scale = { 160.f, 90.f };
// Clear out any existing objects
//gameworld.Clear();
for (unsigned i = 0; i < count; ++i)
{
EntityPtr entity;
std::ostringstream name;
// Create an entity from the "Box" archetype.
entity = ENGINE->Factory().create("Box Particle");
// reduce the scale of the particle so it's a bit smaller
entity->GET_COMPONENT(Transform)->scale = glm::vec2(0.5f, 0.5f);
// Set the particle properties
ParticlePtr particle = entity->GET_COMPONENT(Particle);
float xvel = static_cast<float>((rand() % 10000) - 5000) / 10000.f;
float yvel = static_cast<float>((rand() % 10000) - 5000) / 10000.f;
particle->velocity = glm::normalize(glm::vec2(xvel, yvel));
float r = static_cast<float>(rand() % 1000) / 1000.f;
float g = r - static_cast<float>(rand() % 1000) / 1000.f;
entity->GET_COMPONENT(Sprite)->_color = glm::vec4(r, g, 0.f, 1.f);
// Create a string stream to generate a name for the entity.
name << "Fire Particle " << i / 2;
// Set the generated name.
entity->SetName(name.str());
// Add the object to the game world.
gameworld->AddEntity(entity);
}
}
void Test::FireBallSpawn(unsigned count)
{
// Get a reference to the "Game World" space so that we can add an object to it.
SpacePtr gameworld = ENGINE->GetSpace("Particle Demo");
glm::vec2 mousepos = GETSYS(WindowSDL)->GetMousePosition();
for (unsigned i = 0; i < count; ++i)
{
// get a degree anywhere in a circle (0 through 360)
float angle = RandFloat() * 360.f;
float scale = RandFloat() * 80.f;
glm::vec2 startPos = { cosf(angle) * scale + mousepos.x, sinf(angle) * scale + mousepos.y };
glm::vec2 velocity = { 0.f, RandFloat() * 8.f - 16.f };
float lifetime = RandFloat() * 2.f;
EntityPtr entity = ENGINE->Factory().create("Fire Particle");
entity->GET_COMPONENT(Transform)->scale = glm::vec2(3.5f, 3.5f);
entity->GET_COMPONENT(Transform)->position = startPos;
entity->GET_COMPONENT(Transform)->rotation = 0.f;
entity->GET_COMPONENT(Particle)->velocity = velocity;
entity->GET_COMPONENT(Particle)->lifetime = lifetime;
// Create a string stream to generate a name for the entity.
std::ostringstream name;
name << "Fire Particle " << i / 2;
// Set the generated name.
entity->SetName(name.str());
// Add the object to the game world.
gameworld->AddEntity(entity);
}
}
/*!
* @brief Draws everything that is in the entities list with a sprite component
* @param Entity the entity that is going to be drawn
* @param camera the camera used to draw the objects to
*/
void GLGraphics::DrawEntity(const EntityPtr &Entity, const CameraPtr &camera)
{
ShaderPtr shader = _shaders.find(Entity->GET_COMPONENT(Sprite)->_shaderName)->second;
TransformPtr transform = Entity->GET_COMPONENT(Transform);
if (shader.get() != nullptr)
{
//constructing the matrix of the transform
glm::mat4x4 object2world;
object2world = glm::translate(object2world,
glm::vec3( Entity->GET_COMPONENT(Transform)->position.x,
Entity->GET_COMPONENT(Transform)->position.y,
0.0f )
);
object2world = glm::rotate( object2world,
transform->rotation * 3.141592f / 180.f, // degrees to radians conversion
glm::vec3(0.f, 0.f, 1.0f)
);
object2world = glm::scale(object2world,
glm::vec3(transform->scale.x,
transform->scale.y,
0.f)
);
//Updating the uniforms in the shader, has to happen every frame
shader->UpdateUniforms("model", object2world);
shader->UpdateUniforms("view", camera->_viewMatrix);
//Switching the camera's projection matrix based on the flag
switch (camera->viewtype)
{
case Camera::CV_ORTHOGRAPHIC:
shader->UpdateUniforms("proj", camera->_ortho);
break;
case Camera::CV_PERSPECTIVE:
shader->UpdateUniforms("proj", camera->_pespective);
break;
}
shader->UpdateUniforms("color", Entity->GET_COMPONENT(Sprite)->_color);
shader->Use();
switch (Entity->GET_COMPONENT(Sprite)->mesh)
{
case Sprite::QUAD:
glBindVertexArray(_quadInfo.vao);
glDrawElements(
GL_TRIANGLE_STRIP, //Draw Type
6, //Number of points
GL_UNSIGNED_SHORT, //Data that it is when being read
nullptr);
break;
case Sprite::CIRCLE:
glBindVertexArray(_circleInfo.vao);
glDrawElements(GL_TRIANGLE_FAN, 30000, GL_UNSIGNED_SHORT, nullptr);
break;
default:
glBindVertexArray(_quadInfo.vao);
glDrawElements(GL_TRIANGLE_STRIP, 6, GL_UNSIGNED_SHORT, nullptr);
break;
}
}
}
