Position & Angle for particle engine (See #99)

- position & angle added. - thruster symmetry fixed.
abekkine · May 12, 2018 · 485b4c2 · 485b4c2
1 parent 604fa21
commit 485b4c2
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Showing 2 changed files with 16 additions and 2 deletions.
diff --git a/testing/particle-test/ParticleManager.h b/testing/particle-test/ParticleManager.h
@@ -19,9 +19,16 @@ class ParticleManager {
     }
     virtual void AddParticle() = 0;
     void Render() {
+        glPushMatrix();
+        glLoadIdentity();
+        glTranslated(x_, y_, 0.0);
+        glRotated(angle_, 0.0, 0.0, 1.0);
+
         for (auto p : particles) {
             p->Render();
         }
+
+        glPopMatrix();
     }
     void AddParticles() {
         for (int i=0; i<kBurstSize; ++i) {
@@ -48,6 +55,9 @@ class ParticleManager {
 protected:
     const int kMaxParticles;
     const int kBurstSize;
+    double x_;
+    double y_;
+    double angle_;
     std::vector<Particle *> particles;
 };
 

diff --git a/testing/particle-test/Thruster.h b/testing/particle-test/Thruster.h
@@ -18,12 +18,16 @@ class Smoke : public Particle {
 
 class Thruster : public ParticleManager {
 public:
-    Thruster(int n, int m) : ParticleManager(n, m) {}
+    Thruster(int n, int m) : ParticleManager(n, m) {
+        x_ = 10.0;
+        y_ = 10.0;
+        angle_ = 90.0;
+    }
     ~Thruster() {}
     void AddParticle() {
         Smoke *p;
         p = new Smoke(1.0);
-        double a = drand48() * M_PI / 6.0;
+        double a = (drand48() * M_PI / 6.0) - (M_PI / 12.0);
         double s = drand48() * 10.0 + 5.0;
         p->vx = s * cos(a);
         p->vy = s * sin(a);