Mini map fog of war

by Jared Barger · in RTS Starter Kit · 11/17/2004 (10:28 am) · 44 replies · edit:

struct ClientUnit{
 S32 team;
 Point2I point;
};//ClientUnit
//render the map
dglSetBitmapModulation(ColorF(1.0, 1.0, 1.0));
dglDrawBitmap(mRenderTexture, offset, GFlip_Y);
//render the map
// dglSetBitmapModulation(ColorF(1.0, 1.0, 1.0));
// dglDrawBitmap(mRenderTexture, offset, GFlip_Y);
Point2I drawChunkPoint;			// Will hold a point to render some map at
RectI mapRect;				// Will hold our source rect from the map image
ClientUnit* unitList = 0;		// List of important info about our units
ClientUnit* unitIter;			// To iterate through the list later
int listSize = 0;			// Count of the unit list
int vision = 10;			// Unit vision range on the map (in pixels?)
[b]RTSConnection* myConn = 0; // Will hold our connection to the game
S32 localTeam = 0;                  // WIll hold our team id
[/b]
myConn = (RTSConnection*)mConnection->getServerConnection();
localTeam = myConn->getTeam(); // Now get our team id
for(SimSetIterator itr(mConnection); *itr; ++itr){
 if((*itr)->getType() & PlayerObjectType) listSize++;
}//for
unitIter = unitList = new ClientUnit[listSize];
//render the units
// glPointSize(2.0f);
// glColor3f(0.0, 0.0, 1.0);
// glBegin(GL_POINTS);
//  static char buff[18];
//  dSprintf(buff, 18, "$Server::TeamInfo0");
dglSetBitmapModulation(ColorF(1.0, 1.0, 1.0));
if(projectPoint(unit->getPosition(), &screenPos))
{
 /*
 S32 team = unit->getTeam();					The original block of code that's removed now
 buff[17] = '0' + team; 
 const char* pref = Con::getVariable(buff);
 ColorF teamColor;
 dSscanf(pref, "%f %f %f", &teamColor.red, &teamColor.green, &teamColor.blue);
 glColor3f(teamColor.red, teamColor.green, teamColor.blue);
 glVertex2f(offset.x + screenPos.x, offset.y + screenPos.y);
 */

 if(localTeam == unit->getTeam()){         // Only give us map vision for our team

								// Get the XY of the upper left corner that the 
								// unit can see
 drawChunkPoint.set(offset.x + screenPos.x - vision, offset.y + screenPos.y - vision);

								// Get the rect of the map to render. Since it's flipped
								// on the Y axis before rendering we need to "come in"
								// from the opposite side
 mapRect.set(screenPos.x - vision, mTextureSize - screenPos.y - vision, vision * 2, vision * 2);

								// Drop the rect from the map at point drawChunk with
								// the clipping rectangle mapRect and then flip it
 dglDrawBitmapSR(mRenderTexture, drawChunkPoint, mapRect, GFlip_Y);

								// Save the info we'll need to render the blip later
 }//if

 unitIter->point.set(offset.x + screenPos.x, offset.y + screenPos.y);
 unitIter->team = unit->getTeam();
 unitIter++;
}
if (projectPoint(unit->getPosition(), &screenPos))
            {
               /*
               S32 team = unit->getTeam();
               buff[17] = '0' + team;
               const char* pref = Con::getVariable(buff);
               ColorF teamColor;
               dSscanf(pref, "%f %f %f", &teamColor.red, &teamColor.green, &teamColor.blue);
               glColor3f(teamColor.red, teamColor.green, teamColor.blue);
               glVertex2f(offset.x + screenPos.x, offset.y + screenPos.y);
               */
               // Only give us map vision for our team
               if(localTeam == unit->getTeam())         
               {                      
                 // Get the XY of the upper left corner that the unit can see  
                 drawChunkPoint.set(offset.x + screenPos.x - vision, offset.y + screenPos.y - vision);  

                 // Get the rect of the map to render. Since it's flipped  
                 // on the Y axis before rendering we need to "come in"  
                 // from the opposite side  
                 mapRect.set(screenPos.x - vision, mTextureSize - screenPos.y - vision, vision * 2, vision * 2);  
                      
                 // Drop the rect from the map at point drawChunk with  
                 // the clipping rectangle mapRect and then flip it  
                 dglDrawBitmapSR(mRenderTexture, drawChunkPoint, mapRect, GFlip_Y);  
                 // Save the info we'll need to render the blip later  
               }//if

               unitIter->point.set(offset.x + screenPos.x, offset.y + screenPos.y);  
               unitIter->team = unit->getTeam();  
               unitIter++;  

               glPointSize(2.0f);  
               glColor3f(0.0, 0.0, 1.0);  
               glBegin(GL_POINTS);  
               static char buff[18];  
               dSprintf(buff, 18, "$Server::TeamInfo0");  
               unitIter = unitList;                        // Reset the iterator  
                    
               for(int i = 0; i < listSize; i++)
               {  
                 buff[17] = char(48) + unitIter->team;             // forum font doesn't seem to like single quotes...char(48) == '0'  
                 const char* pref = Con::getVariable(buff);  
                 ColorF teamColor;  
                 dSscanf(pref, "%f %f %f", &teamColor.red, &teamColor.green, &teamColor.blue);  
                 glColor3f(teamColor.red, teamColor.green, teamColor.blue);  
                 glVertex2f(unitIter->point.x, unitIter->point.y);                      
                 unitIter++;  
               } // for
               glEnd();
            }
         }
      }
   }  
 //  glEnd();      
     
   delete []unitList;                      // Cleanup!
//   myConn = (RTSConnection*)mConnection->getServerConnection();
//   localTeam = myConn->getTeam(); // Now get our team id 
   myConn = (RTSConnection*)mConnection->getConnectionToServer();  // getConnectionToServer()->getId()
   localTeam = myConn->getId(); // Now get our team id
myConn = (RTSConnection*)mConnection->getConnectionToServer();
   localTeam = myConn->getTeam(); // Now get our team

Game Development Community

Mini map fog of war

About the author

Recent Threads