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ParticleGenerator.cpp
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ParticleGenerator.cpp
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#include "ParticleGenerator.h"
#include "sfml_game/ImageManager.h"
#include "sfml_game/CollidingSpriteEntity.h"
#include "Constants.h"
#include "WitchBlastGame.h"
const float drift = 25.0f;
ParticleGenerator::ParticleGenerator()
: velocityDistribution(std::normal_distribution<float>(0.0f, 1.0f))
, driftDistribution(std::normal_distribution<float>(drift, drift))
, lifetimeDistribution(std::normal_distribution<float>(0.3f, 0.1f))
, sizeDistribution(std::uniform_int_distribution<>(10, 20))
, colorDistribution(std::uniform_int_distribution<>(0, 20))
, dice6Distribution(std::uniform_int_distribution<>(0,6))
{}
void ParticleGenerator::GenerateParticles(int frame, int imageId, float posX, float posY, int width, int height, const Vector2D & velocity, int nOfParticles, float scale)
{
for (int i = 0; i < nOfParticles; ++i)
{
//int sizeFactor = sizeDistribution(randomGenerator);
Vector2D newVelocity = velocity;
RandomizeVelocity(newVelocity);
float lifeTime = lifetimeDistribution(randomGenerator);
if (scale == 0.7f) lifeTime *= 0.3f;
GenerateBoltParticle(frame, newVelocity, posX, posY, lifeTime, scale );
}
}
void ParticleGenerator::RandomShuffle(float & val1, float & val2)
{
float factor1 = velocityDistribution(randomGenerator) * 15.0f;
//float factor2 = driftDistribution(randomGenerator);
val1 += factor1;
val2 += velocityDistribution(randomGenerator) * 15.0f;
}
void ParticleGenerator::RandomizeVelocity(Vector2D & velocity)
{
if (velocity.x == 0.0f)
RandomShuffle(velocity.x, velocity.y);
else
RandomShuffle(velocity.y, velocity.x);
}
void ParticleGenerator::RandomizeColor(SpriteEntity* particle)
{
int myRandNumber = colorDistribution(randomGenerator);
if (myRandNumber < 3)
particle->setColor(sf::Color(200, 150, 200));
else if (myRandNumber<7)
particle->setColor(sf::Color(200, 200, 100));
else if (myRandNumber < 13)
particle->setColor(sf::Color(150, 200, 255));
}
void ParticleGenerator::GenerateBoltParticle(int frame, const Vector2D & velocity, float posX, float posY, float lifeTime, float scale)
{
float particleScale = scale - 0.2f;
// low particles -> lifetime / 2
if (game().getParameters().lowParticles) lifeTime *= 0.5f;
if (game().getParameters().particlesBatching)
{
// "background" particle
// not for ice shots
if (frame != 2)
game().getCurrentMapEntity()->generateBoltParticle(posX, posY, velocity, true, BOLT_PRO_LINE + frame, particleScale, lifeTime);
// "blend" particle
// same size for illusion shots
if (frame != 3) particleScale -= 0.1f;
game().getCurrentMapEntity()->generateBoltParticle(posX, posY, velocity, false, BOLT_PRO_LINE * 2 + frame, particleScale, lifeTime);
}
else
{
// "background" particle
// not for ice shots
if (frame != 2)
{
SpriteEntity* particle = new SpriteEntity(ImageManager::getInstance().getImage(IMAGE_BOLT), posX, posY, BOLT_WIDTH, BOLT_HEIGHT);
particle->setFading(true);
particle->setImagesProLine(BOLT_PRO_LINE);
particle->setZ(10);
particle->setLifetime(lifeTime);
particle->setVelocity(velocity);
particle->setType(ENTITY_EFFECT);
particle->setFrame(BOLT_PRO_LINE + frame);
particle->setShrinking(true, particleScale, particleScale);
}
// "blend" particle
// same size for illusion shots
if (frame != 3) particleScale -= 0.1f;
SpriteEntity* particle = new SpriteEntity(ImageManager::getInstance().getImage(IMAGE_BOLT), posX, posY, BOLT_WIDTH, BOLT_HEIGHT);
particle->setFading(true);
particle->setImagesProLine(BOLT_PRO_LINE);
particle->setZ(11);
particle->setLifetime(lifeTime);
particle->setVelocity(velocity);
particle->setType(ENTITY_EFFECT);
particle->setFrame(BOLT_PRO_LINE * 2 + frame);
particle->setShrinking(true, particleScale, particleScale);
particle->setRenderAdd();
}
}

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