Changeset 15

Timestamp:

12/08/07 04:40:37 (1 year ago)

Author:

charlie137

Message:

Added random angle when saucer fire

Files:

• trunk/guisterax/guisterax (deleted)
• trunk/guisterax/src/saucer.d (modified) (1 diff)
• trunk/guisterax/src/vect.d (modified) (1 diff)

trunk/guisterax/src/saucer.d

@@ -94 +94 @@
-        Vect f_target = target.pos + 20 * target.speed;
-        Vect speed = this.speed + 4 * (f_target - pos).normal();
+        speed.rotate(rand(-0.2, 0.2));  // we add a random angle to the fire
-        m_fire_sound.play();
-        universe.append(new Saucer.Fire(pos, speed), this);

trunk/guisterax/src/vect.d

@@ -59 +59 @@
-    float norm() {return sqrt(norm2());}
-    Vect normal() {assert(norm2() != 0); return *this / norm();}
+    
+    // Rotate the vector by angle a (in rad)
+    void rotate(float a) {
+        float c = cos(a);
+        float s = sin(a);
+        x = x * c - y * s;
+        y = x * s + y * c;
+    }
-};
-