From 34617091bcb8fca873b58fa85ac901e545fc0e09 Mon Sep 17 00:00:00 2001
From: Henrique Santiago <henrique_santiago93@hotmail.com>
Date: Thu, 8 Dec 2011 05:28:52 -0200
Subject: [PATCH] particles works, but really early state, need pointers fix

---
 src/framework/graphics/particlessystem.cpp | 42 +++++++++++++++++++---
 src/framework/graphics/particlessystem.h   | 11 ++++++
 src/otclient/net/protocolgameparse.cpp     |  2 +-
 3 files changed, 49 insertions(+), 6 deletions(-)

diff --git a/src/framework/graphics/particlessystem.cpp b/src/framework/graphics/particlessystem.cpp
index 5339a70c..5b852065 100644
--- a/src/framework/graphics/particlessystem.cpp
+++ b/src/framework/graphics/particlessystem.cpp
@@ -5,13 +5,20 @@
 Particle::Particle(const Rect& rect, float vx, float vy, float ax, float ay, const Color& color, TexturePtr texture)
 {
     m_rect = rect;
+    m_ix = rect.x(); m_iy = rect.y();
     m_vx = vx; m_vy = vy;
     m_ax = ax; m_ay = ay;
     m_color = color;
     m_texture = texture;
+    m_startTicks = g_clock.ticks();
     m_finished = false;
 }
 
+Particle::~Particle()
+{
+    //dump << "deleted";
+}
+
 void Particle::render()
 {
     g_graphics.bindColor(m_color);
@@ -22,6 +29,14 @@ void Particle::render()
         g_graphics.drawTexturedRect(m_rect, m_texture);
 }
 
+void Particle::update()
+{
+    ticks_t t = g_clock.ticks() - m_startTicks;
+
+    m_rect.moveTo(m_ix + (m_vx * t / 1000.0) + (m_ax * t*t / 2000.0),
+                  m_iy + (m_vy * t / 1000.0) + (m_ay * t*t / 2000.0));
+}
+
 Emitter::Emitter(const Point& position, int duration, int particlesPerSecond)
 {
     m_position = position;
@@ -43,15 +58,28 @@ void Emitter::update()
     ticks_t elapsedTicks = g_clock.ticks() - m_startTicks;
 
     // check if finished
-    if(m_duration > 0 && elapsedTicks > m_duration * 1000)
+    if(m_duration > 0 && elapsedTicks > m_duration * 1000) {
         m_finished = true;
+        return;
+    }
+
+    // update particles
+    for(auto it = m_particles.begin(), end = m_particles.end(); it != end;) {
+        if((*it).hasFinished()) {
+            it = m_particles.erase(it);
+            continue;
+        }
+        (*it).update();
+        ++it;
+    }
 
     // create some particles
     int currentParticles = elapsedTicks / 1000.0 * m_particlesPerSecond;
     for(int i = m_createdParticles; i < currentParticles; ++i) {
-        Particle particle = Particle(Rect(100, 100, 16, 16), 0, 0, 0, 0);
-        m_particles.push_back(particle);
+        // todo: add random data generation
+        m_particles.push_back(Particle(Rect(100, 100, 16, 16), 16, 8, 0, 0));
     }
+    m_createdParticles = currentParticles;
 }
 
 void ParticlesSystem::add(Emitter emitter)
@@ -68,8 +96,12 @@ void ParticlesSystem::render()
 void ParticlesSystem::update()
 {
     for(auto it = m_emitters.begin(), end = m_emitters.end(); it != end;) {
-        Emitter emitter = *it;
-        emitter.update();
+        if((*it).hasFinished()) {
+            it = m_emitters.erase(it);
+            continue;
+        }
+
+        (*it).update();
         ++it;
     }
 }
diff --git a/src/framework/graphics/particlessystem.h b/src/framework/graphics/particlessystem.h
index 6eed56e5..67bc88e2 100644
--- a/src/framework/graphics/particlessystem.h
+++ b/src/framework/graphics/particlessystem.h
@@ -5,15 +5,24 @@ struct Particle {
 public:
 
     Particle(const Rect& rect, float vx, float vy, float ax, float ay, const Color& color = Color(255, 255, 255), TexturePtr texture = nullptr);
+    ~Particle();
+
     void render();
+    void update();
+
+    bool hasFinished() { return m_finished; }
 
 private:
     Rect m_rect;
+
+    int m_ix, m_iy;
     float m_vx, m_vy;
     float m_ax, m_ay;
 
     Color m_color;
     TexturePtr m_texture;
+
+    ticks_t m_startTicks;
     bool m_finished;
 };
 
@@ -25,6 +34,8 @@ public:
     void render();
     void update();
 
+    bool hasFinished() { return m_finished; }
+
 private:
     // self related
     Point m_position;
diff --git a/src/otclient/net/protocolgameparse.cpp b/src/otclient/net/protocolgameparse.cpp
index 1985c73c..4ed5c4d5 100644
--- a/src/otclient/net/protocolgameparse.cpp
+++ b/src/otclient/net/protocolgameparse.cpp
@@ -532,7 +532,7 @@ void ProtocolGame::parseMagicEffect(InputMessage& msg)
     // test particles
     ParticlesSystem particlesSystem;
 
-    Emitter emitter = Emitter(Point(100, 100), 30, 30);
+    Emitter emitter = Emitter(Point(100, 100), 5, 1);
     particlesSystem.add(emitter);
 
     g_particlesManager.add(particlesSystem);