- Mouse wheel

source/jgame.cpp

@@ -39,6 +39,10 @@ int main(int argc, char *argv[])
             {
                 input::updateClk(e.button.button);
             }
+            if (e.type==SDL_MOUSEWHEEL)
+            {
+                input::updateWheel(e.wheel.y);
+            }
         }
 
         if (SDL_GetTicks()-current_ticks >= game::ticks_per_frame)
@@ -47,6 +51,7 @@ int main(int argc, char *argv[])
             input::updateKey(SDL_SCANCODE_UNKNOWN);
             input::updateKeypressed(SDL_SCANCODE_UNKNOWN);
             input::updateClk(0);
+            input::updateWheel(0);
             current_ticks = SDL_GetTicks();
         }
     }

source/jinput.cpp

@@ -8,6 +8,7 @@ namespace input
     static uint8_t keypressed = 0;
     static uint8_t keydown = 0;
     static uint8_t btnClicked = 0;
+    static uint8_t wheel = 0;
     static int screen_zoom = 1;
 
     void init(const int zoom)
@@ -55,6 +56,11 @@ namespace input
         btnClicked = btn;
     }
 
+    void updateWheel(uint8_t dy)
+    {
+        wheel = dy;
+    }
+
     int mouseX()
     {
         int x;
@@ -79,4 +85,8 @@ namespace input
         return btnClicked == btn;
     }
 
+    int mouseWheel()
+    {
+        return wheel;
+    }
 }

source/jinput.h

@@ -28,10 +28,12 @@ namespace input
     void updateKey(uint8_t key);
     void updateKeypressed(uint8_t key);
     void updateClk(uint8_t btn);
+    void updateWheel(uint8_t dy);
 
     int mouseX();
     int mouseY();
     bool mouseBtn(int btn);
     bool mouseClk(int btn);
+    int mouseWheel();
 
 }