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chaning to velocity from direction

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ericrius1 2015-08-11 14:43:05 -07:00
parent 9fe3444d56
commit ddaba19a4e
4 changed files with 2 additions and 73 deletions
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7
libraries/entities/src/EntityItemProperties.cpp
View file

@ -86,7 +86,6 @@ CONSTRUCT_PROPERTY(lifespan, ParticleEffectEntityItem::DEFAULT_LIFESPAN),
CONSTRUCT_PROPERTY(emitRate, ParticleEffectEntityItem::DEFAULT_EMIT_RATE),
CONSTRUCT_PROPERTY(emitDirection, ParticleEffectEntityItem::DEFAULT_EMIT_DIRECTION),
CONSTRUCT_PROPERTY(directionSpread, ParticleEffectEntityItem::DEFAULT_DIRECTION_SPREAD),
CONSTRUCT_PROPERTY(emitStrength, ParticleEffectEntityItem::DEFAULT_EMIT_STRENGTH),
CONSTRUCT_PROPERTY(localGravity, ParticleEffectEntityItem::DEFAULT_LOCAL_GRAVITY),
CONSTRUCT_PROPERTY(particleRadius, ParticleEffectEntityItem::DEFAULT_PARTICLE_RADIUS),
CONSTRUCT_PROPERTY(marketplaceID, ENTITY_ITEM_DEFAULT_MARKETPLACE_ID),
@ -352,7 +351,6 @@ EntityPropertyFlags EntityItemProperties::getChangedProperties() const {
CHECK_PROPERTY_CHANGE(PROP_EMIT_RATE, emitRate);
CHECK_PROPERTY_CHANGE(PROP_EMIT_DIRECTION, emitDirection);
CHECK_PROPERTY_CHANGE(PROP_DIRECTION_SPREAD, directionSpread);
CHECK_PROPERTY_CHANGE(PROP_EMIT_STRENGTH, emitStrength);
CHECK_PROPERTY_CHANGE(PROP_LOCAL_GRAVITY, localGravity);
CHECK_PROPERTY_CHANGE(PROP_PARTICLE_RADIUS, particleRadius);
CHECK_PROPERTY_CHANGE(PROP_MARKETPLACE_ID, marketplaceID);
@ -455,7 +453,6 @@ QScriptValue EntityItemProperties::copyToScriptValue(QScriptEngine* engine, bool
COPY_PROPERTY_TO_QSCRIPTVALUE(emitRate);
COPY_PROPERTY_TO_QSCRIPTVALUE(emitDirection);
COPY_PROPERTY_TO_QSCRIPTVALUE(directionSpread);
COPY_PROPERTY_TO_QSCRIPTVALUE(emitStrength);
COPY_PROPERTY_TO_QSCRIPTVALUE(localGravity);
COPY_PROPERTY_TO_QSCRIPTVALUE(particleRadius);
COPY_PROPERTY_TO_QSCRIPTVALUE(marketplaceID);
@ -576,7 +573,6 @@ void EntityItemProperties::copyFromScriptValue(const QScriptValue& object, bool
COPY_PROPERTY_FROM_QSCRIPTVALUE(emitRate, float, setEmitRate);
COPY_PROPERTY_FROM_QSCRIPTVALUE(emitDirection, glmVec3, setEmitDirection);
COPY_PROPERTY_FROM_QSCRIPTVALUE(directionSpread, glmVec3, setDirectionSpread);
COPY_PROPERTY_FROM_QSCRIPTVALUE(emitStrength, float, setEmitStrength);
COPY_PROPERTY_FROM_QSCRIPTVALUE(localGravity, float, setLocalGravity);
COPY_PROPERTY_FROM_QSCRIPTVALUE(particleRadius, float, setParticleRadius);
COPY_PROPERTY_FROM_QSCRIPTVALUE(marketplaceID, QString, setMarketplaceID);
@ -818,7 +814,6 @@ bool EntityItemProperties::encodeEntityEditPacket(PacketType::Value command, Ent
APPEND_ENTITY_PROPERTY(PROP_EMIT_RATE, properties.getEmitRate());
APPEND_ENTITY_PROPERTY(PROP_EMIT_DIRECTION, properties.getEmitDirection());
APPEND_ENTITY_PROPERTY(PROP_DIRECTION_SPREAD, properties.getDirectionSpread());
APPEND_ENTITY_PROPERTY(PROP_EMIT_STRENGTH, properties.getEmitStrength());
APPEND_ENTITY_PROPERTY(PROP_LOCAL_GRAVITY, properties.getLocalGravity());
APPEND_ENTITY_PROPERTY(PROP_PARTICLE_RADIUS, properties.getParticleRadius());
@ -1088,7 +1083,6 @@ bool EntityItemProperties::decodeEntityEditPacket(const unsigned char* data, int
READ_ENTITY_PROPERTY_TO_PROPERTIES(PROP_EMIT_RATE, float, setEmitRate);
READ_ENTITY_PROPERTY_TO_PROPERTIES(PROP_EMIT_DIRECTION, glm::vec3, setEmitDirection);
READ_ENTITY_PROPERTY_TO_PROPERTIES(PROP_DIRECTION_SPREAD, glm::vec3, setDirectionSpread);
READ_ENTITY_PROPERTY_TO_PROPERTIES(PROP_EMIT_STRENGTH, float, setEmitStrength);
READ_ENTITY_PROPERTY_TO_PROPERTIES(PROP_LOCAL_GRAVITY, float, setLocalGravity);
READ_ENTITY_PROPERTY_TO_PROPERTIES(PROP_PARTICLE_RADIUS, float, setParticleRadius);
}
@ -1220,7 +1214,6 @@ void EntityItemProperties::markAllChanged() {
_emitRateChanged = true;
_emitDirectionChanged = true;
_directionSpreadChanged = true;
_emitStrengthChanged = true;
_localGravityChanged = true;
_particleRadiusChanged = true;

2
libraries/entities/src/EntityItemProperties.h
View file

@ -133,7 +133,6 @@ public:
DEFINE_PROPERTY(PROP_EMIT_RATE, EmitRate, emitRate, float);
DEFINE_PROPERTY_REF(PROP_EMIT_DIRECTION, EmitDirection, emitDirection, glm::vec3);
DEFINE_PROPERTY_REF(PROP_DIRECTION_SPREAD, DirectionSpread, directionSpread, glm::vec3);
DEFINE_PROPERTY(PROP_EMIT_STRENGTH, EmitStrength, emitStrength, float);
DEFINE_PROPERTY(PROP_LOCAL_GRAVITY, LocalGravity, localGravity, float);
DEFINE_PROPERTY(PROP_PARTICLE_RADIUS, ParticleRadius, particleRadius, float);
DEFINE_PROPERTY_REF(PROP_MARKETPLACE_ID, MarketplaceID, marketplaceID, QString);
@ -313,7 +312,6 @@ inline QDebug operator<<(QDebug debug, const EntityItemProperties& properties) {
DEBUG_PROPERTY_IF_CHANGED(debug, properties, Lifespan, lifespan, "");
DEBUG_PROPERTY_IF_CHANGED(debug, properties, EmitRate, emitRate, "");
DEBUG_PROPERTY_IF_CHANGED(debug, properties, EmitDirection, emitDirection, "");
DEBUG_PROPERTY_IF_CHANGED(debug, properties, EmitStrength, emitStrength, "");
DEBUG_PROPERTY_IF_CHANGED(debug, properties, LocalGravity, localGravity, "");
DEBUG_PROPERTY_IF_CHANGED(debug, properties, ParticleRadius, particleRadius, "");
DEBUG_PROPERTY_IF_CHANGED(debug, properties, MarketplaceID, marketplaceID, "");

59
libraries/entities/src/ParticleEffectEntityItem.cpp
View file

@ -52,7 +52,6 @@ const float ParticleEffectEntityItem::DEFAULT_LIFESPAN = 3.0f;
const float ParticleEffectEntityItem::DEFAULT_EMIT_RATE = 15.0f;
const glm::vec3 ParticleEffectEntityItem::DEFAULT_EMIT_DIRECTION(0.0f, 1.0f, 0.0f);
const glm::vec3 ParticleEffectEntityItem::DEFAULT_DIRECTION_SPREAD(0.0f, 0.0f, 0.0f);
const float ParticleEffectEntityItem::DEFAULT_EMIT_STRENGTH = 25.0f;
const float ParticleEffectEntityItem::DEFAULT_LOCAL_GRAVITY = -9.8f;
const float ParticleEffectEntityItem::DEFAULT_PARTICLE_RADIUS = 0.025f;
const QString ParticleEffectEntityItem::DEFAULT_TEXTURES = "";
@ -69,7 +68,6 @@ ParticleEffectEntityItem::ParticleEffectEntityItem(const EntityItemID& entityIte
_lifespan(DEFAULT_LIFESPAN),
_emitRate(DEFAULT_EMIT_RATE),
_emitDirection(DEFAULT_EMIT_DIRECTION),
_emitStrength(DEFAULT_EMIT_STRENGTH),
_localGravity(DEFAULT_LOCAL_GRAVITY),
_particleRadius(DEFAULT_PARTICLE_RADIUS),
_lastAnimated(usecTimestampNow()),
@ -95,78 +93,29 @@ ParticleEffectEntityItem::ParticleEffectEntityItem(const EntityItemID& entityIte
ParticleEffectEntityItem::~ParticleEffectEntityItem() {
}
void ParticleEffectEntityItem::setDimensions(const glm::vec3& value) {
computeAndUpdateDimensions();
}
void ParticleEffectEntityItem::setLifespan(float lifespan) {
_lifespan = lifespan;
computeAndUpdateDimensions();
}
void ParticleEffectEntityItem::setEmitDirection(glm::vec3 emitDirection) {
_emitDirection = glm::normalize(emitDirection);
computeAndUpdateDimensions();
}
void ParticleEffectEntityItem::setDirectionSpread(glm::vec3 directionSpread) {
_directionSpread = directionSpread;
}
void ParticleEffectEntityItem::setEmitStrength(float emitStrength) {
_emitStrength = emitStrength;
computeAndUpdateDimensions();
}
void ParticleEffectEntityItem::setLocalGravity(float localGravity) {
_localGravity = localGravity;
computeAndUpdateDimensions();
}
void ParticleEffectEntityItem::setParticleRadius(float particleRadius) {
_particleRadius = particleRadius;
computeAndUpdateDimensions();
}
void ParticleEffectEntityItem::computeAndUpdateDimensions() {
const float t = _lifespan * 1.1f; // add 10% extra time, to account for incremental timer accumulation error.
const float MAX_RANDOM_FACTOR = (0.5f * 0.25f);
const float maxOffset = (MAX_RANDOM_FACTOR * _emitStrength) + _particleRadius;
// bounds for x and z is easy to compute because there is no at^2 term.
float xMax = (_emitDirection.x * _emitStrength + maxOffset) * t;
float xMin = (_emitDirection.x * _emitStrength - maxOffset) * t;
float zMax = (_emitDirection.z * _emitStrength + maxOffset) * t;
float zMin = (_emitDirection.z * _emitStrength - maxOffset) * t;
// yEnd is where the particle will end.
float a = _localGravity;
float atSquared = a * t * t;
float v = _emitDirection.y * _emitStrength + maxOffset;
float vt = v * t;
float yEnd = 0.5f * atSquared + vt;
// yApex is where the particle is at it's apex.
float yApexT = (-v / a);
float yApex = 0.0f;
// only set apex if it's within the lifespan of the particle.
if (yApexT >= 0.0f && yApexT <= t) {
yApex = -(v * v) / (2.0f * a);
}
float yMax = std::max(yApex, yEnd);
float yMin = std::min(yApex, yEnd);
// times 2 because dimensions are diameters not radii.
glm::vec3 dims(2.0f * std::max(fabsf(xMin), fabsf(xMax)),
2.0f * std::max(fabsf(yMin), fabsf(yMax)),
2.0f * std::max(fabsf(zMin), fabsf(zMax)));
EntityItem::setDimensions(dims);
}
EntityItemProperties ParticleEffectEntityItem::getProperties() const {
EntityItemProperties properties = EntityItem::getProperties(); // get the properties from our base class
@ -182,7 +131,7 @@ EntityItemProperties ParticleEffectEntityItem::getProperties() const {
COPY_ENTITY_PROPERTY_TO_PROPERTIES(lifespan, getLifespan);
COPY_ENTITY_PROPERTY_TO_PROPERTIES(emitRate, getEmitRate);
COPY_ENTITY_PROPERTY_TO_PROPERTIES(emitDirection, getEmitDirection);
COPY_ENTITY_PROPERTY_TO_PROPERTIES(emitStrength, getEmitStrength);
COPY_ENTITY_PROPERTY_TO_PROPERTIES(localGravity, getLocalGravity);
COPY_ENTITY_PROPERTY_TO_PROPERTIES(particleRadius, getParticleRadius);
COPY_ENTITY_PROPERTY_TO_PROPERTIES(textures, getTextures);
@ -204,7 +153,6 @@ bool ParticleEffectEntityItem::setProperties(const EntityItemProperties& propert
SET_ENTITY_PROPERTY_FROM_PROPERTIES(lifespan, setLifespan);
SET_ENTITY_PROPERTY_FROM_PROPERTIES(emitRate, setEmitRate);
SET_ENTITY_PROPERTY_FROM_PROPERTIES(emitDirection, setEmitDirection);
SET_ENTITY_PROPERTY_FROM_PROPERTIES(emitStrength, setEmitStrength);
SET_ENTITY_PROPERTY_FROM_PROPERTIES(localGravity, setLocalGravity);
SET_ENTITY_PROPERTY_FROM_PROPERTIES(particleRadius, setParticleRadius);
SET_ENTITY_PROPERTY_FROM_PROPERTIES(textures, setTextures);
@ -260,7 +208,6 @@ int ParticleEffectEntityItem::readEntitySubclassDataFromBuffer(const unsigned ch
READ_ENTITY_PROPERTY(PROP_LIFESPAN, float, setLifespan);
READ_ENTITY_PROPERTY(PROP_EMIT_RATE, float, setEmitRate);
READ_ENTITY_PROPERTY(PROP_EMIT_DIRECTION, glm::vec3, setEmitDirection);
READ_ENTITY_PROPERTY(PROP_EMIT_STRENGTH, float, setEmitStrength);
READ_ENTITY_PROPERTY(PROP_LOCAL_GRAVITY, float, setLocalGravity);
READ_ENTITY_PROPERTY(PROP_PARTICLE_RADIUS, float, setParticleRadius);
READ_ENTITY_PROPERTY(PROP_TEXTURES, QString, setTextures);
@ -284,7 +231,6 @@ EntityPropertyFlags ParticleEffectEntityItem::getEntityProperties(EncodeBitstrea
requestedProperties += PROP_LIFESPAN;
requestedProperties += PROP_EMIT_RATE;
requestedProperties += PROP_EMIT_DIRECTION;
requestedProperties += PROP_EMIT_STRENGTH;
requestedProperties += PROP_LOCAL_GRAVITY;
requestedProperties += PROP_PARTICLE_RADIUS;
requestedProperties += PROP_TEXTURES;
@ -312,7 +258,6 @@ void ParticleEffectEntityItem::appendSubclassData(OctreePacketData* packetData,
APPEND_ENTITY_PROPERTY(PROP_LIFESPAN, getLifespan());
APPEND_ENTITY_PROPERTY(PROP_EMIT_RATE, getEmitRate());
APPEND_ENTITY_PROPERTY(PROP_EMIT_DIRECTION, getEmitDirection());
APPEND_ENTITY_PROPERTY(PROP_EMIT_STRENGTH, getEmitStrength());
APPEND_ENTITY_PROPERTY(PROP_LOCAL_GRAVITY, getLocalGravity());
APPEND_ENTITY_PROPERTY(PROP_PARTICLE_RADIUS, getParticleRadius());
APPEND_ENTITY_PROPERTY(PROP_TEXTURES, getTextures());
@ -544,7 +489,7 @@ void ParticleEffectEntityItem::stepSimulation(float deltaTime) {
// set initial conditions
_particlePositions[i] = glm::vec3(0.0f, 0.0f, 0.0f);
_particleVelocities[i] = _emitDirection * _emitStrength + randOffset;
_particleVelocities[i] = _emitDirection + randOffset;
integrateParticle(i, timeLeftInFrame);
extendBounds(_particlePositions[i]);

7
libraries/entities/src/ParticleEffectEntityItem.h
View file

@ -86,8 +86,6 @@ public:
void setAnimationLastFrame(float lastFrame) { _animationLoop.setLastFrame(lastFrame); }
float getAnimationLastFrame() const { return _animationLoop.getLastFrame(); }
virtual void setDimensions(const glm::vec3& value) override;
static const quint32 DEFAULT_MAX_PARTICLES;
void setMaxParticles(quint32 maxParticles);
quint32 getMaxParticles() const { return _maxParticles; }
@ -109,9 +107,6 @@ public:
void setDirectionSpread(glm::vec3 directionSpread);
const glm::vec3& getDirectionSpread() const { return _directionSpread; }
static const float DEFAULT_EMIT_STRENGTH;
void setEmitStrength(float emitStrength);
float getEmitStrength() const { return _emitStrength; }
static const float DEFAULT_LOCAL_GRAVITY;
void setLocalGravity(float localGravity);
@ -121,7 +116,6 @@ public:
void setParticleRadius(float particleRadius);
float getParticleRadius() const { return _particleRadius; }
void computeAndUpdateDimensions();
bool getAnimationIsPlaying() const { return _animationLoop.isRunning(); }
float getAnimationFrameIndex() const { return _animationLoop.getFrameIndex(); }
@ -152,7 +146,6 @@ protected:
float _emitRate;
glm::vec3 _emitDirection;
glm::vec3 _directionSpread;
float _emitStrength;
float _localGravity;
float _particleRadius;
quint64 _lastAnimated;