#include "minimap.h"

minimap::minimap() {

}

minimap::~minimap() {
}

bool minimap::Init(char *mapfile, char *maskfile) {
  if ((mapfile==NULL)||(maskfile==NULL)) {
    cerr<<"error: null filename in minimap init"<<endl;
    return false;
  }


  
      TextureMap &tex = MapTexture;

      if (tex.LoadTIFF(mapfile)) {
      // set up params and bind name
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
        tex.InitTextureParams(false);//or after the clamps?
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
      } else cerr<<"Error loading map texture "<<mapfile<<endl;

      TextureMap &tex2 = MaskTexture;

      if (tex2.LoadTIFF(maskfile)) {
      // set up params and bind name
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
        tex2.InitTextureParams(false);//or after the clamps?
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
      } else cerr<<"Error loading map texture "<<maskfile<<endl;
      
      return true;
}





//the p variables are the fraction across the level the player is at. for example, if the course is 64x64 and player 1 is at x=27.5,y=13, then p1x=27.5/64 and p1y=13/64. make them -1 if the player does not exist
void minimap::DrawMap(int windowwidth, int windowheight, float p1x, float p1y, float p2x, float p2y, int numplayers) {
  

  glPushMatrix();
  int mapsize=windowheight/3;
  if (numplayers!=2) {
    glViewport(0,(int)((float)mapsize*1.0),mapsize,mapsize);
  } else {
    glViewport(0,(int)((float)mapsize*1.0),mapsize*2,mapsize);
  }

  glColor3f(1,1,1);
  glDisable(GL_DEPTH_TEST);
  glDepthMask(GL_FALSE);
  glMatrixMode(GL_MODELVIEW);
  glLoadIdentity();
  //glOrtho(-1,2,-1,2,0.01,100);//aspect 1
  glOrtho(-0.5,2,-1,2,0,100);
  //glOrtho(0,1,0,1,0,100);

  glEnable(GL_BLEND);
  glEnable(GL_TEXTURE_2D);
  
  glBlendFunc(GL_DST_COLOR,GL_ZERO);
  //glBlendFunc(GL_DST_COLOR,GL_ONE);
  glBindTexture(GL_TEXTURE_2D,MaskTexture.GetName());
  glBegin(GL_QUADS);
  glTexCoord2i(0,1);
  //glColor3f(1,0,0);
  glVertex2f(0,1);
  glTexCoord2i(1,1);
  //glColor3f(1,1,0);
  glVertex2f(1,1);
  glTexCoord2i(1,0);
  //glColor3f(1,0,1);
  glVertex2f(1,0);
  glTexCoord2i(0,0);
  //glColor3f(0,1,1);
  glVertex2f(0,0);
  glEnd();
  
  glBlendFunc(GL_ONE,GL_ONE);
  //glBlendFunc(GL_ZERO,GL_ZERO);
  glBindTexture(GL_TEXTURE_2D,MapTexture.GetName());
  glBegin(GL_QUADS);
  glTexCoord2i(0,1);
  //glColor3f(1,0,0);
  glVertex2f(0,1);
  glTexCoord2i(1,1);
  //glColor3f(1,1,0);
  glVertex2f(1,1);
  glTexCoord2i(1,0);
  //glColor3f(1,0,1);
  glVertex2f(1,0);
  glTexCoord2i(0,0);
  //glColor3f(0,1,1);
  glVertex2f(0,0);
  glEnd();


  glDisable(GL_BLEND);


  //draw the dots
#define dotsize 0.05

  glDisable(GL_TEXTURE_2D);

#define adjust 0.2

  glColor3f(1,0,0);
  glBegin(GL_QUADS);
  glVertex2f(p1x,p1y+adjust);
  glVertex2f(p1x,p1y+dotsize+adjust);
  glVertex2f(p1x+dotsize,p1y+dotsize+adjust);
  glVertex2f(p1x+dotsize,p1y+adjust);
  glEnd();
  glColor3f(0,0,1);
  glBegin(GL_QUADS);
  glVertex2f(p2x,p2y+adjust);
  glVertex2f(p2x,p2y+dotsize+adjust);
  glVertex2f(p2x+dotsize,p2y+dotsize+adjust);
  glVertex2f(p2x+dotsize,p2y+adjust);
  glEnd();





  glEnable(GL_DEPTH_TEST);
  glDepthMask(GL_TRUE);
  glPopMatrix();

}