1 files changed, 51 insertions, 0 deletions
diff --git a/particle.cpp b/particle.cpp
new file mode 100644
index 0000000..9e0b130
--- /dev/null
+++ b/particle.cpp
@@ -0,0 +1,51 @@
+#include "particle.h"
+
+#include <cmath>
+
+float SelectionParticle::t = 0;
+
+SelectionParticle::SelectionParticle() {
+	init(t += .1);
+}
+
+SelectionParticle::SelectionParticle(const SelectionParticle& p) {
+	pos = p.pos;
+	vel = p.vel;
+	alpha = p.alpha;
+	decay = p.decay;
+}
+
+void SelectionParticle::init(float seed) {
+	pt = seed;
+	speed = .0005 + fmodf(seed, .001);
+	speed = .001 + fmodf(seed, .002);
+	alpha = 1.0;
+	decay = 0.001 * ((rand() % 5 + 5) / 20.0);
+	pos = Vector3(cosf(rand()), 0, sinf(rand()));
+	//pos = Vector3(cosf(seed), 0, sinf(seed));
+	//p.pos = src;
+	//p.pos.x *= ((rand() % 20 + 10) / 
+	vel = Vector3(cosf(rand()), 10, sinf(rand()));
+	vel /= vel.length();// * ((rand() % 10 + 5) / 10);
+}
+
+void SelectionParticle::update(unsigned int steps, vec4f *v) {
+	pt += speed * steps;
+	alpha -= decay * steps;
+	if(alpha <= 0) {
+		init(t += 0.1);
+		return;
+	} else {
+		pos += vel * (steps / 1000.0);
+		pos.y += vel.y * (steps / 1000.0);
+		//it->vel += Vector3(0, -.1, 0) * (steps / 1000.0);
+	}
+	//update(steps);
+	//vec4f *v = &vertices[i];
+	//v->x = pos.x * cosf(t * (i+1) / 800);
+	v->x = pos.x * cosf(pt);
+	v->y = pos.y;
+	//v->z = pos.z * sinf(t * (i+1) / 800);
+	v->z = pos.z * sinf(pt);
+	v->w = alpha;
+}