emitter delay and system deletion

modules/particle.otpa

@@ -1,30 +1,92 @@
 ParticleSystem
+
+  // continuous fire, yellow
+  Emitter
+    position: 100 100
+    duration: 8
+    delay: 0.1
+    burstRate: 0.03
+    burstCount: 5
+
+    particle-min-duration: 0.6
+    particle-max-duration: 0.8
+    particle-position-radius: 0
+    
+    particle-velocity: 96
+    particle-min-velocity-angle: 310
+    particle-max-velocity-angle: 340
+    
+    particle-acceleration: 0
+
+    particle-size: 24 24
+    particle-color: #ffff0044
+    particle-texture: circle2.png
+    
+  // fire ball, up side, orange
+  Emitter
+    position: 100 100
+    duration: 0.5
+    delay: 0.1
+    burstRate: 0.01
+    burstCount: 6
+
+    particle-min-duration: 0.1
+    particle-max-duration: 0.3
+    particle-position-radius: 0
+    
+    particle-velocity: 128
+    particle-min-velocity-angle: 360
+    particle-max-velocity-angle: 380
+    
+    particle-acceleration: 512
+    particle-acceleration-angle: 270
+
+    particle-size: 24 24
+    particle-color: #ffa50044
+    particle-texture: circle2.png
+    
+  // fire ball, down side, orange
+  Emitter
+    position: 100 100
+    duration: 0.5
+    delay: 0.1
+    burstRate: 0.01
+    burstCount: 6
+
+    particle-min-duration: 0.1
+    particle-max-duration: 0.3
+    particle-position-radius: 0
+    
+    particle-velocity: 128
+    particle-min-velocity-angle: 270
+    particle-max-velocity-angle: 290
+    
+    particle-acceleration: 512
+    particle-acceleration-angle: 45
+
+    particle-size: 24 24
+    particle-color: #ffa50044
+    particle-texture: circle2.png
+
+  // smoke
   Emitter
     position: 100 100
     duration: 9
     burstRate: 0.03
     burstCount: 1
 
-
-    particle-size: 8 8
-
+    particle-min-duration: 0.6
+    particle-max-duration: 1
     particle-position-radius: 0
-    particle-velocity-angle: 0
+    
+    particle-velocity: 64
+    particle-min-velocity-angle: 290
+    particle-max-velocity-angle: 360
+    
     particle-acceleration: 0
 
-    particle-color: #22940684
+    particle-size: 24 24
+    particle-color: #cccccc22
     particle-texture: circle2.png
 
-  Emitter
-    position: 100 100
-    duration: 9
-    burstRate: 1
-    burstCount: 30
   
-    particle-size: 5 5
-
-    particle-position-radius: 0
-    particle-velocity-angle: 0
-    particle-acceleration-angle: 90
-    particle-color: #ff0000ff
-    particle-texture: circle2.png

src/framework/application.cpp

@@ -111,6 +111,8 @@ void Application::init(const std::vector<std::string>& args, int appFlags)
 
     if(m_appFlags & Fw::AppEnableModules)
         g_modules.discoverModulesPath();
+
+    g_particleManager.load("particle.otpa");
 }
 
 

src/framework/graphics/particleemitter.cpp

@@ -35,6 +35,7 @@ ParticleEmitter::ParticleEmitter(const ParticleSystemPtr& parent)
 
     m_position = Point(0, 0);
     m_duration = -1;
+    m_delay = 0;
     m_burstRate = 1; m_burstCount = 32;
     m_currentBurst = 0;
     m_startTime = g_clock.time();
@@ -68,6 +69,8 @@ bool ParticleEmitter::load(const OTMLNodePtr& node)
             m_position = childNode->value<Point>();
         else if(childNode->tag() == "duration")
             m_duration = childNode->value<float>();
+        else if(childNode->tag() == "delay")
+            m_delay = childNode->value<float>();
         else if(childNode->tag() == "burstRate")
             m_burstRate = childNode->value<float>();
         else if(childNode->tag() == "burstCount")
@@ -158,6 +161,13 @@ void ParticleEmitter::update()
 {
     float elapsedTime = g_clock.timeElapsed(m_startTime);
 
+    // only start updating after delay
+    if(elapsedTime < m_delay)
+        return;
+
+    // setup a new start time
+    elapsedTime -= m_delay;
+
     // check if finished
     if(m_duration > 0 && elapsedTime > m_duration) {
         m_finished = true;

src/framework/graphics/particleemitter.h

@@ -32,6 +32,7 @@ class ParticleEmitter {
 public:
 
     ParticleEmitter(const ParticleSystemPtr& parent);
+    ~ParticleEmitter() { dump << "ParticleEmitter deleted"; }
 
     bool load(const OTMLNodePtr& node);
 
@@ -44,7 +45,7 @@ private:
 
     // self related
     Point m_position;
-    int m_duration;
+    float m_duration, m_delay;
     double m_startTime;
     bool m_finished;
     float m_burstRate;

src/framework/graphics/particlemanager.cpp

@@ -35,7 +35,7 @@ bool ParticleManager::load(const std::string& filename)
             if(node->tag() == "ParticleSystem") {
                 ParticleSystemPtr particleSystem = ParticleSystemPtr(new ParticleSystem);
                 particleSystem->load(node);
-                m_particlesSystems.push_back(particleSystem);
+                m_particleSystems.push_back(particleSystem);
             }
         }
         return true;
@@ -47,12 +47,21 @@ bool ParticleManager::load(const std::string& filename)
 
 void ParticleManager::render()
 {
-    for(auto it = m_particlesSystems.begin(), end = m_particlesSystems.end(); it != end; ++it)
+    for(auto it = m_particleSystems.begin(), end = m_particleSystems.end(); it != end; ++it)
         (*it)->render();
 }
 
 void ParticleManager::update()
 {
-    for(auto it = m_particlesSystems.begin(), end = m_particlesSystems.end(); it != end; ++it)
-        (*it)->update();
+    for(auto it = m_particleSystems.begin(), end = m_particleSystems.end(); it != end;) {
+        const ParticleSystemPtr& particleSystem = *it;
+
+        if(particleSystem->hasFinished()) {
+            it = m_particleSystems.erase(it);
+            continue;
+        }
+
+        particleSystem->update();
+        ++it;
+    }
 }

src/framework/graphics/particlemanager.h

@@ -34,7 +34,7 @@ public:
     void update();
 
 private:
-    std::list<ParticleSystemPtr> m_particlesSystems;
+    std::list<ParticleSystemPtr> m_particleSystems;
 };
 
 extern ParticleManager g_particleManager;

src/framework/graphics/particlesystem.cpp

@@ -22,8 +22,11 @@
 
 #include "particle.h"
 #include "particlesystem.h"
-#include <framework/core/declarations.h>
-#include <framework/ui/declarations.h>
+
+ParticleSystem::ParticleSystem()
+{
+    m_finished = false;
+}
 
 bool ParticleSystem::load(const OTMLNodePtr& node)
 {
@@ -50,6 +53,12 @@ void ParticleSystem::render()
 
 void ParticleSystem::update()
 {
+    // check if finished
+    if(m_particles.empty() && m_emitters.empty()) {
+        m_finished = true;
+        return;
+    }
+
     // update emitters
     for(auto it = m_emitters.begin(), end = m_emitters.end(); it != end;) {
         const ParticleEmitterPtr& emitter = *it;

src/framework/graphics/particlesystem.h

@@ -40,6 +40,9 @@ public:
 
 class ParticleSystem : public std::enable_shared_from_this<ParticleSystem> {
 public:
+    ParticleSystem();
+    ~ParticleSystem() { dump << "ParticleSystem deleted"; }
+
     bool load(const OTMLNodePtr& node);
 
     void addParticle(const ParticlePtr& particle);
@@ -47,7 +50,10 @@ public:
     void render();
     void update();
 
+    bool hasFinished() { return m_finished; }
+
 private:
+    bool m_finished;
     std::list<ParticlePtr> m_particles;
     std::list<ParticleEmitterPtr> m_emitters;
     std::list<Affector> m_affectors;