1 files changed, 84 insertions, 0 deletions
diff --git a/debian/fireflies/fireflies-2.08/src/firefly.cc b/debian/fireflies/fireflies-2.08/src/firefly.cc
new file mode 100644
index 00000000..b4f50d68
--- /dev/null
+++ b/debian/fireflies/fireflies-2.08/src/firefly.cc
@@ -0,0 +1,84 @@
+#include "firefly.h"
+#include "scene.h"
+#include "modes.h"
+
+Firefly::Firefly(Bait *_bait, Vec3f ctr, double spread)
+    : Arrow(), bait(_bait), age(0.)
+{
+    pos = ctr;
+    pos += rand_vec3(-spread, spread);
+
+    velocity = bait->fspeed*unit_vec(bait->pos - pos);
+    tail = new Tail(this);
+}
+
+Firefly::~Firefly()
+{
+    tail->owner = 0;
+    scene.dead_tails.push_back(tail);
+}
+
+void Firefly::draw()
+{
+    glPushMatrix();
+    Arrow::draw();
+    glPopMatrix();
+
+    tail->draw();
+}
+
+void Firefly::elapse(double t)
+{
+    age += t;
+
+    calc_accel();
+    velocity += accel*t;
+    clamp_vec(velocity, bait->fspeed);
+    pos += velocity*t;
+
+    point(velocity);
+    set_color();
+
+    // elapse, my children
+    tail->elapse(t);
+}
+
+void Firefly::calc_accel()
+{
+    if (age > 2.0 && rand_int(0, 60)==0) {
+	GLuint i, closest_i = 0;
+	double dist, closest_dist = 1e10;
+	for (i = 0; i < scene.baits.size(); i++) {
+	    if ((dist=norm(scene.baits[i]->pos - pos)) < closest_dist) {
+		closest_dist = dist;
+		closest_i = i;
+	    }
+	}
+	dist = norm(bait->pos - pos);
+	if (closest_dist < dist-1.0) {
+	    bait = scene.baits[closest_i];
+	    age = 0.;
+	}
+    }
+    else if (age > 5.0) {
+	if (norm(bait->pos - pos) >= 200 && !(bait->bspeed == 0 || bait->attractor)) {
+	    bait->mode_next = BMODE_STOP;
+	}
+    }
+
+    accel = bait->faccel*unit_vec(bait->pos - pos);
+}
+
+void Firefly::set_color()
+{
+    hsv = bait->hsv;
+    hsv[0] += 40*norm2(velocity)/(bait->fspeed*bait->fspeed) - 20;
+
+    // clamp to my range
+    while (hsv[0] > 360.f)
+	hsv[0] -= 360.f;
+    while (hsv[0] < 0.f)
+	hsv[0] += 360.f;
+
+    color = hsv_to_rgb(hsv);
+}