//14.9 - Drawing.cpp - Mark Lee - Prima Publishing
#include "drawing.h"

void DisplayScreen(char* bmp)
//displays the specified bitmap on the screen
{
     //prepare blitting info
     DDBLTFX ddbltfx;
     ZeroMemory(&ddbltfx,sizeof(ddbltfx));
     ddbltfx.dwSize = sizeof(ddbltfx);
     //create a surface from the bitmap
     g_pddsone = DDLoadBitmap(g_pdd,bmp,800,600);
     //blt the surface to the back buffer
     g_pddsback->Blt(NULL,g_pddsone, NULL,NULL,&ddbltfx);
     //display this prepared screen
     g_pddsprimary->Flip(NULL,0);
}

void Redraw()
//function used to draw the screen after the first time
{
     ship->Draw();
}

void LoadMaps()
//create HBITMAPs from all of the map files
{
     //use Win32 LoadImage function
     entireMap[0][0] = (HBITMAP)LoadImage(NULL,
          "map1.bmp",IMAGE_BITMAP, 800,600,
          LR_LOADFROMFILE | LR_CREATEDIBSECTION);
     entireMap[1][0] = (HBITMAP)LoadImage(NULL,
          "map2.bmp",IMAGE_BITMAP, 800,600,
          LR_LOADFROMFILE | LR_CREATEDIBSECTION);
     entireMap[2][0] = (HBITMAP)LoadImage(NULL,
          "map3.bmp",IMAGE_BITMAP, 800,600,
          LR_LOADFROMFILE | LR_CREATEDIBSECTION);
     entireMap[0][1] = (HBITMAP)LoadImage(NULL,
          "map4.bmp",IMAGE_BITMAP, 800,600,
          LR_LOADFROMFILE | LR_CREATEDIBSECTION);
     entireMap[1][1] = (HBITMAP)LoadImage(NULL,
          "map5.bmp",IMAGE_BITMAP, 800,600,
          LR_LOADFROMFILE | LR_CREATEDIBSECTION);
     entireMap[2][1] = (HBITMAP)LoadImage(NULL,
          "map6.bmp",IMAGE_BITMAP, 800,600,
          LR_LOADFROMFILE | LR_CREATEDIBSECTION);
     entireMap[0][2] = (HBITMAP)LoadImage(NULL,
          "map7.bmp",IMAGE_BITMAP, 800,600,
          LR_LOADFROMFILE | LR_CREATEDIBSECTION);
     entireMap[1][2] = (HBITMAP)LoadImage(NULL,
          "map8.bmp",IMAGE_BITMAP, 800,600,
          LR_LOADFROMFILE | LR_CREATEDIBSECTION);
     entireMap[2][2] = (HBITMAP)LoadImage(NULL,
          "map9.bmp",IMAGE_BITMAP, 800,600,
          LR_LOADFROMFILE | LR_CREATEDIBSECTION);
     //first map is top left corner
     currentMapX = 0;
     currentMapY = 0;
}

void InitializeDirectX(HWND hWnd)
//performs all DirectX initialization
{
     //create the DirectDraw object
     hRet = DirectDrawCreateEx(NULL, (void**)&g_pdd,
          IID_IDirectDraw7, NULL);
     if(hRet != DD_OK)
          MessageBox(hWnd, "DirectDrawCreateEx Failed", 
               "Error", NULL);
     //Set the Cooperative Level
     hRet = g_pdd->SetCooperativeLevel(hWnd, 
          DDSCL_FULLSCREEN | DDSCL_EXCLUSIVE);
     if(hRet != DD_OK)
          MessageBox(hWnd, "SetCooperativeLevel Failed", 
               "Error", NULL);;
     //Set the display mode: 800x600 with 16 bits per pixel
     hRet = g_pdd->SetDisplayMode(800, 600, 16,0,0);
     if(hRet != DD_OK)
          MessageBox(hWnd, "SetDisplayMode Failed", 
               "Error", NULL);;
               
     //prepare primary surface info
     ZeroMemory(&ddsd,sizeof(ddsd));
     ddsd.dwSize = sizeof(ddsd);
     ddsd.dwFlags = DDSD_CAPS | DDSD_BACKBUFFERCOUNT;
     ddsd.dwBackBufferCount = 1;
     ddsd.ddsCaps.dwCaps = DDSCAPS_PRIMARYSURFACE | 
          DDSCAPS_FLIP | DDSCAPS_COMPLEX;
     
     //create the surface
     hRet = g_pdd->CreateSurface(&ddsd, 
          &g_pddsprimary, NULL);
     if (hRet != DD_OK)
          MessageBox(hWnd, "CreateSurface Failed", 
               "Error", NULL);
     
     //prepare the back buffer info
     ZeroMemory(&ddsc,sizeof(ddsc));
     ddsc.dwCaps = DDSCAPS_BACKBUFFER;
               
     //get a pointer to the back buffer
     hRet = g_pddsprimary->GetAttachedSurface(&ddsc,
          &g_pddsback);
               
}

void Draw()
//initial drawing function - draws the game screen
{
     //create the ship
     ship = new Ship();
     //draw the ship on top of the map
     ship->Draw();
}