Messages

1

Graphics / Rotate Sprite

« on: July 02, 2009, 10:01:27 am »

Now I have:

Code: [Select]


Sprite.SetCenter(Sprite.GetSize() / 2.f);
if (App.GetInput().GetMouseX() <= Sprite.GetPosition().x) {
   Sprite.SetRotation  (-1* 360 / 3.1415926535 * (atan2(   static_cast<double> (Sprite.GetPosition().y - App.GetInput().GetMouseY()) , static_cast<double> (Sprite.GetPosition().x - App.GetInput().GetMouseX()))));
      } else {
      Sprite.SetRotation  (-1* 360 / 3.1415926535 *(atan2(   static_cast<double> (Sprite.GetPosition().y - App.GetInput().GetMouseY()) ,      static_cast<double> (Sprite.GetPosition().x - App.GetInput().GetMouseX()))));
      }
App.ConvertCoords(App.GetInput().GetMouseX(), App.GetInput().GetMouseY());
but still doesn't work properly. The same story :/

EDIT:
Success! It must look like this:

Code: [Select]

Sprite.SetCenter(Sprite.GetSize() / 2.f);
if (App.GetInput().GetMouseX() <= Sprite.GetPosition().x) {
   Sprite.SetRotation  (((-1* 360 / 3.1415926535 * (atan2(   static_cast<double> (Sprite.GetPosition().y - App.GetInput().GetMouseY()) , static_cast<double> (Sprite.GetPosition().x - App.GetInput().GetMouseX()))))/2)+90);
      } else {
      Sprite.SetRotation  (((-1* 360 / 3.1415926535 *(atan2(   static_cast<double> (Sprite.GetPosition().y - App.GetInput().GetMouseY()) ,      static_cast<double> (Sprite.GetPosition().x - App.GetInput().GetMouseX()))))/2)+90);
      }
Thanks for help!

2

Graphics / Rotate Sprite

« on: July 01, 2009, 10:17:33 pm »

Hi my first post
I was writning code which rotate sprite and follows the cursor.

Code: [Select]


Sprite.SetCenter(Sprite.GetSize() / 2.f);
if (App.GetInput().GetMouseX() <= Sprite.GetPosition().x) {
   Sprite.SetRotation  (-1 * 360/ 3.1415926535 * (atan(   static_cast<double> (Sprite.GetPosition().y - App.GetInput().GetMouseY()) / static_cast<double> (Sprite.GetPosition().x - App.GetInput().GetMouseX()))));
      } else {
      Sprite.SetRotation  (-1 * 360/ 3.1415926535 *(atan(   static_cast<double> (Sprite.GetPosition().y - App.GetInput().GetMouseY()) /      static_cast<double> (Sprite.GetPosition().x - App.GetInput().GetMouseX()))));
      }

but it doesn't work properly. Sprite (its rifle)isn't parallel to cursor.
It look like that:


What is wrong?