Ok, never seen that tag


here a code for a classical RTS camera
with static ISO view and smoothed zooming


Code:

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//a simple RTS like ISO camera, like in Warcraft3, without turning the camera.pan
//movement of the camera with cursorkeys, and touching the side of the screen
//zooming with the mouseweel
function tools_camera_RTS_1()
{
  var tools_movespeed=50;       //movespeed of the camera
  var tools_lowest_cam_z=0;     //range of the camera for zooming
  var tools_highest_cam_z=800;
  
  var tools_zoomhight=600;
  var tools_zoomspeed=.6;     //value between .99 and .01
  
  var tools_timed_fraction;
  
  var high_tilt=-60;          //standard tile of the camera (should be a negative number between -90 and 0)
  var low_tilt=-30;           //tilt when reching a low position
  var tilt_switch_hight=500;  //hight when to switch to lower tilt of camera
  var tilt_diff;tilt_diff=tilt_switch_hight-tools_lowest_cam_z;
  
  
  camera.z+=tools_zoomhight;              //hight of the camera above ground
  camera.pan=90;                          //to have the same view as in WED
  camera.tilt=high_tilt;                 //ISO looking down
  
  while(1)
    {
      //re-position camera according to inputdata form mouse-pointer or cursor-keys
      if((key_cur)||(mouse_cursor.x>screen_size.x-2)){camera.x+=tools_movespeed*time;}
      if((key_cul)||(mouse_cursor.x<2)){camera.x-=tools_movespeed*time;}
      if((key_cuu)||(mouse_cursor.y<2)){camera.y+=tools_movespeed*time;}
      if((key_cud)||(mouse_cursor.y>screen_size.y-2)){camera.y-=tools_movespeed*time;}
      
      tools_timed_fraction=tools_zoomspeed*time;
      
      tools_zoomhight+=mickey.z*.5;
      tools_zoomhight=min(max(tools_lowest_cam_z,tools_zoomhight),tools_highest_cam_z);
      
      camera.z=camera.z*(1-tools_timed_fraction)+tools_zoomhight*tools_timed_fraction;
      camera.z=min(max(tools_lowest_cam_z,camera.z),tools_highest_cam_z);
      
      
      if(camera.z>tilt_switch_hight){camera.tilt=high_tilt;}   //use standard tilt above tilt_switch_hight
      else{camera.tilt=high_tilt-(((tilt_switch_hight-camera.z)/tilt_diff)*(high_tilt-low_tilt));}  //calculate a tilt depending on hight od camera
      
      wait(1);
    }
}

 

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