#include <windows.h>
#include <hge.h>
#include <hgeresource.h>
#define MAXCOINS 100
#include <hgesprite.h>
#include <hgeanim.h>
#include <hgefont.h>
#include <hgeparticle.h>

HGE *hge = 0;
hgeResourceManager* myRes;
hgeSprite* bgSprite;
hgeAnimation* coinAnim;
hgeFont* font1;
HCHANNEL chan[2];
HEFFECT coinSound;
hgeParticleSystemInfo sparkles;
hgeParticleManager *particleManager;

float mouseX, mouseY;  //coordinates of the mouse cursor
int collected = 0; //how many coins were collected
bool done = false;

struct Coin{
 bool exists;  //does the coin exist?
 hgeRect loc;  //the location of the coin on the screen
};

Coin coins[MAXCOINS];

bool FrameFunc()
{
  hge->Input_GetMousePos(&mouseX, &mouseY);  //get the current mouse position
  float dt=hge->Timer_GetDelta();  //get the time since the last call to FrameFunc
  coinAnim->Update(dt);  //update the coin animation
  particleManager->Update(dt);  //update all particles
 
  //when left mouse is clicked, check to see if coin is clicked
  if(hge->Input_GetKey()==HGEK_LBUTTON){
   for(int i=0; i<MAXCOINS; i++){  //check all coins
    if(coins[i].exists && coins[i].loc.TestPoint(mouseX, mouseY)){  //is mouse position inside a coin?
     chan[1] = hge->Effect_Play(coinSound);  //play a sound
     particleManager->SpawnPS(&sparkles, mouseX, mouseY);  //spawn a particle
     coins[i].exists = false;
     collected++;
    }
   }
  }
  
 hge->Gfx_BeginScene();
 hge->Gfx_Clear(0);  //clear the screen, filling it with black
 bgSprite->RenderStretch(0, 0, 800, 600);  //render the background sprite stretched

 //render all coins
 for(int i=0; i<MAXCOINS; i++){
  if(coins[i].exists) coinAnim->RenderStretch(coins[i].loc.x1, coins[i].loc.y1, coins[i].loc.x2, coins[i].loc.y2);
 }
 font1->SetScale(1.0); //set text size to normal
 font1->SetColor(ARGB(255,0,0,0));  //set color of text to black
 font1->printf(5, 5, "Coins collected: %d", collected);  //display amount of coins collected
 
 particleManager->Render();  //render all particles
 
 hge->Gfx_EndScene();
 
 return done;
}

int WINAPI WinMain (HINSTANCE,
                    HINSTANCE,
                    LPSTR,
                    int)

{
  hge = hgeCreate(HGE_VERSION);
  hge->System_SetState(HGE_WINDOWED, true);
  hge->System_SetState(HGE_FRAMEFUNC, FrameFunc);
  hge->System_SetState(HGE_HIDEMOUSE, false);
  hge->System_SetState(HGE_TITLE, "Coin Collector"); 
  hge->System_SetState(HGE_LOGFILE, "tut.log");
  
  if(hge->System_Initiate())
  {
    myRes = new hgeResourceManager("resource.res");
    hge->Random_Seed(0);
    bgSprite = myRes->GetSprite("bgSprite");

    coinAnim = myRes->GetAnimation("coin");
    coinAnim->Play();  //start playback of animation
    font1 = myRes->GetFont("font1");
    coinSound = myRes->GetEffect("coinSound");
    sparkles = myRes->GetParticleSystem("coinCollected")->info;
    particleManager= new hgeParticleManager();
    
    //initialize all coins
    for(int i=0; i<MAXCOINS; i++){
     float randX, randY;
     coins[i].exists=true;
     randX = hge->Random_Float(0, 770);
     randY = hge->Random_Float(0, 570);
     coins[i].loc = hgeRect(randX, randY, randX+32, randY+32);
    }
    
    hge->System_Start();
  }
  else
  {	
    MessageBox(NULL, hge->System_GetErrorMessage(), "Error",
               MB_OK | MB_ICONERROR | MB_SYSTEMMODAL);
  }
  
  delete myRes;
  delete particleManager;
  
  hge->System_Shutdown();
  hge->Release();

  return 0;
}