Isometric Game Programming with DirectX 7.0/Isometric Game Programming.iso/source/chapter21/isohex21_2/isohex21_2.cpp

C/C++ Source or Header | 2000-11-09 | 11.9 KB | 484 lines

/*****************************************************************************
IsoHex21_2.cpp
Ernest S. Pazera
09SEPT2000
Start a WIN32 Application Workspace, add in this file
Requires the following libs:
ddraw.lib, dxguid.lib
Requires the following files:
DDFuncs.h.cpp, GDICanvas.h/cpp, IsoMouseMap.h/cpp,
IsoScroller.h/cpp, IsoTilePlotter.h/cpp, IsoTileWalker.h/cpp
TileSet.h/cpp. IsoHexCore.h, IsoHexDefs.h
IsoRenderer.h/cpp
*****************************************************************************/

//////////////////////////////////////////////////////////////////////////////
//INCLUDES
//////////////////////////////////////////////////////////////////////////////
#define WIN32_LEAN_AND_MEAN

#include <windows.h>
#include "DDFuncs.h"
#include "TileSet.h"
#include "IsoHexCore.h"
#include "IsoRenderer.h"

//////////////////////////////////////////////////////////////////////////////
//DEFINES
//////////////////////////////////////////////////////////////////////////////
//name for our window class
#define WINDOWCLASS "ISOHEX21"
//title of the application
#define WINDOWTITLE "IsoHex 21-2"

const int MAPWIDTH=40;
const int MAPHEIGHT=40;

const int SCREENWIDTH=640;
const int SCREENHEIGHT=480;

//road flags
const int ROAD_NORTHEAST=1;
const int ROAD_SOUTHEAST=2;
const int ROAD_SOUTHWEST=4;
const int ROAD_NORTHWEST=8;

//////////////////////////////////////////////////////////////////////////////
//TYPEDEFS/STRUCTS
//////////////////////////////////////////////////////////////////////////////

//////////////////////////////////////////////////////////////////////////////
//PROTOTYPES
//////////////////////////////////////////////////////////////////////////////
bool Prog_Init();//game data initalizer
void Prog_Loop();//main game loop
void Prog_Done();//game clean up

//////////////////////////////////////////////////////////////////////////////
//GLOBALS
//////////////////////////////////////////////////////////////////////////////
HINSTANCE hInstMain=NULL;//main application handle
HWND hWndMain=NULL;//handle to our main window

//directdraw
LPDIRECTDRAW7 lpdd=NULL;
LPDIRECTDRAWSURFACE7 lpddsMain=NULL;
LPDIRECTDRAWSURFACE7 lpddsBack=NULL;
LPDIRECTDRAWSURFACE7 lpddsFrame=NULL;

//tilesets
CTileSet tsBack;
CTileSet tsRoad;

//isohexcore components
CTilePlotter TilePlotter;//plotter
CTileWalker TileWalker;//walker
CScroller Scroller;//scroller
CMouseMap MouseMap;//mousemap
CRenderer Renderer;//renderer

POINT ptScroll;//keep track of how quickly we scroll

//map location structure
struct MapLocation
{
    bool bRoad;
    int iRoad;
};

MapLocation mlMap[MAPWIDTH][MAPHEIGHT];//map array

//rendering functionprototype
void RenderFunc(LPDIRECTDRAWSURFACE7 lpddsDst,RECT* rcClip,int xDst,int yDst,int xMap,int yMap);
void CalcRoad();//calculate entire map
void CalcRoad(int x,int y);//calculate for individual map location
void CalcRoadNeighborhood(int x,int y);//calculate for a tile neighborhood

//////////////////////////////////////////////////////////////////////////////
//WINDOWPROC
//////////////////////////////////////////////////////////////////////////////
LRESULT CALLBACK TheWindowProc(HWND hwnd,UINT uMsg,WPARAM wParam,LPARAM lParam)
{
    //which message did we get?
    switch(uMsg)
    {
    case WM_KEYDOWN:
        {
            switch(wParam)
            {
            case VK_ESCAPE:
                {
                    DestroyWindow(hWndMain);
                    return(0);
                }break;
            }
        }break;
    case WM_DESTROY://the window is being destroyed
        {

            //tell the application we are quitting
            PostQuitMessage(0);

            //handled message, so return 0
            return(0);

        }break;
    case WM_PAINT://the window needs repainting
        {
            //a variable needed for painting information
            PAINTSTRUCT ps;

            //start painting
            HDC hdc=BeginPaint(hwnd,&ps);

            /////////////////////////////
            //painting code would go here
            /////////////////////////////

            //end painting
            EndPaint(hwnd,&ps);

            //handled message, so return 0
            return(0);
        }break;
    }

    //pass along any other message to default message handler
    return(DefWindowProc(hwnd,uMsg,wParam,lParam));
}


//////////////////////////////////////////////////////////////////////////////
//WINMAIN
//////////////////////////////////////////////////////////////////////////////
int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance,LPSTR lpCmdLine,int nShowCmd)
{
    //assign instance to global variable
    hInstMain=hInstance;

    //create window class
    WNDCLASSEX wcx;

    //set the size of the structure
    wcx.cbSize=sizeof(WNDCLASSEX);

    //class style
    wcx.style=CS_OWNDC | CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS;

    //window procedure
    wcx.lpfnWndProc=TheWindowProc;

    //class extra
    wcx.cbClsExtra=0;

    //window extra
    wcx.cbWndExtra=0;

    //application handle
    wcx.hInstance=hInstMain;

    //icon
    wcx.hIcon=LoadIcon(NULL,IDI_APPLICATION);

    //cursor
    wcx.hCursor=LoadCursor(NULL,IDC_ARROW);

    //background color
    wcx.hbrBackground=(HBRUSH)GetStockObject(BLACK_BRUSH);

    //menu
    wcx.lpszMenuName=NULL;

    //class name
    wcx.lpszClassName=WINDOWCLASS;

    //small icon
    wcx.hIconSm=NULL;

    //register the window class, return 0 if not successful
    if(!RegisterClassEx(&wcx)) return(0);

    //create main window
    hWndMain=CreateWindowEx(0,WINDOWCLASS,WINDOWTITLE, WS_POPUP | WS_VISIBLE,0,0,320,240,NULL,NULL,hInstMain,NULL);

    //error check
    if(!hWndMain) return(0);

    //if program initialization failed, then return with 0
    if(!Prog_Init()) return(0);

    //message structure
    MSG msg;

    //message pump
    for(;;)
    {
        //look for a message
        if(PeekMessage(&msg,NULL,0,0,PM_REMOVE))
        {
            //there is a message

            //check that we arent quitting
            if(msg.message==WM_QUIT) break;

            //translate message
            TranslateMessage(&msg);

            //dispatch message
            DispatchMessage(&msg);
        }

        //run main game loop
        Prog_Loop();
    }

    //clean up program data
    Prog_Done();

    //return the wparam from the WM_QUIT message
    return(msg.wParam);
}

//////////////////////////////////////////////////////////////////////////////
//INITIALIZATION
//////////////////////////////////////////////////////////////////////////////
bool Prog_Init()
{
    //create IDirectDraw object
    lpdd=LPDD_Create(hWndMain,DDSCL_EXCLUSIVE | DDSCL_FULLSCREEN | DDSCL_ALLOWREBOOT);

    //set display mode
    lpdd->SetDisplayMode(SCREENWIDTH,SCREENHEIGHT,16,0,0);

    //create primary surface
    lpddsMain=LPDDS_CreatePrimary(lpdd,1);

    //get back buffer
    lpddsBack=LPDDS_GetSecondary(lpddsMain);

    //create the frame buffer
    lpddsFrame=LPDDS_CreateOffscreen(lpdd,640,480);

    //load in the mousemap
    MouseMap.Load("MouseMap.bmp");

    //set up the tile plotter
    TilePlotter.SetMapType(ISOMAP_DIAMOND);//diamond mode
    TilePlotter.SetTileSize(MouseMap.GetWidth(),MouseMap.GetHeight());//grab width and height from mousemap

    //set up tile walker to diamond mode
    TileWalker.SetMapType(ISOMAP_DIAMOND);

    //set up screeen space
    RECT rcTemp;
    SetRect(&rcTemp,0,0,640,480);
    Scroller.SetScreenSpace(&rcTemp);

    //load in tiles and cursor
    tsBack.Load(lpdd,"backgroundts.bmp");
    tsRoad.Load(lpdd,"roadts.bmp");

    //grab tile extent from tileset
    CopyRect(&rcTemp,&tsBack.GetTileList()[0].rcDstExt);

    //calculate the worldspace
    Scroller.CalcWorldSpace(&TilePlotter,&rcTemp,MAPWIDTH,MAPHEIGHT);

    //calculate the mousemap reference point
    MouseMap.CalcReferencePoint(&TilePlotter,&rcTemp);

    //calculate anchor space
    Scroller.CalcAnchorSpace();

    //set wrap modes for scroller
    Scroller.SetHWrapMode(WRAPMODE_CLIP);
    Scroller.SetVWrapMode(WRAPMODE_CLIP);

    //set scroller anchor to (0,0)
    Scroller.GetAnchor()->x=0;
    Scroller.GetAnchor()->y=0;

    //attach scrolelr and tilewalker to mousemap
    MouseMap.SetScroller(&Scroller);
    MouseMap.SetTileWalker(&TileWalker);

    //set up the map to a random tilefield
    int x;
    int y;
    for(x=0;x<MAPWIDTH;x++)
    {
        for(y=0;y<MAPHEIGHT;y++)
        {
            if(rand()&1)
            {
                mlMap[x][y].bRoad=true;
            }
            else
            {
                mlMap[x][y].bRoad=false;
            }
        }
    }

    //calculate the fringe
    CalcRoad();

    //calculate the extent rect
    RECT rcExtent;
    CopyRect(&rcExtent,&tsBack.GetTileList()[0].rcDstExt);//set to background extent

    //set up the renderer
    Renderer.SetBackBuffer(lpddsBack);
    Renderer.SetExtentRect(&rcExtent);
    Renderer.SetFrameBuffer(lpddsFrame);
    Renderer.SetMapSize(MAPWIDTH,MAPHEIGHT);
    Renderer.SetMouseMap(&MouseMap);
    Renderer.SetPlotter(&TilePlotter);
    Renderer.SetRenderFunction(RenderFunc);
    Renderer.SetScroller(&Scroller);
    Renderer.SetUpdateRectCount(100);
    Renderer.SetWalker(&TileWalker);

    //update the entire screenspace
    Renderer.AddRect(Scroller.GetScreenSpace());

    return(true);//return success
}

//////////////////////////////////////////////////////////////////////////////
//CLEANUP
//////////////////////////////////////////////////////////////////////////////
void Prog_Done()
{
    //release frame buffer
    LPDDS_Release(&lpddsFrame);

    //release main/back surfaces
    LPDDS_Release(&lpddsMain);

    //release directdraw
    LPDD_Release(&lpdd);
}

//////////////////////////////////////////////////////////////////////////////
//MAIN GAME LOOP
//////////////////////////////////////////////////////////////////////////////
void Prog_Loop()
{
    //grab mouse position
    POINT ptMouse;
    GetCursorPos(&ptMouse);

    //calc scrolling
    //horizontal
    ptScroll.x=0;
    if(ptMouse.x<8) ptScroll.x=ptMouse.x-8;
    if(ptMouse.x>SCREENWIDTH-8) ptScroll.x=ptMouse.x-(SCREENWIDTH-8);
    //vertical
    ptScroll.y=0;
    if(ptMouse.y<8) ptScroll.y=ptMouse.y-8;
    if(ptMouse.y>SCREENHEIGHT-8) ptScroll.y=ptMouse.y-(SCREENHEIGHT-8);

    //scroll the frame by ptScroll
    Renderer.ScrollFrame(ptScroll.x,ptScroll.y);
    //update the frame
    Renderer.UpdateFrame();
    //flip to show the back buffer
    lpddsMain->Flip(0,DDFLIP_WAIT);
}

void RenderFunc(LPDIRECTDRAWSURFACE7 lpddsDst,RECT* rcClip,int xDst,int yDst,int xMap,int yMap)
{
    //put down a land tile
    tsBack.ClipTile(lpddsDst,rcClip,xDst,yDst,0);
    //check for a road
    if(mlMap[xMap][yMap].bRoad)
    {
        //put the road image
        tsRoad.ClipTile(lpddsDst,rcClip,xDst,yDst,mlMap[xMap][yMap].iRoad);
    }
}

void CalcRoad()
{
    //loop through x
    for(int x=0;x<MAPWIDTH;x++)
    {
        //loop through y
        for(int y=0;y<MAPHEIGHT;y++)
        {
            //calc the fringe
            CalcRoad(x,y);
        }
    }
}

void CalcRoad(int x,int y)//calculate for individual map location
{
    //range checking
    if(x<0) return;
    if(y<0) return;
    if(x>=MAPWIDTH) return;
    if(y>=MAPHEIGHT) return;
    //calculate the tile neighborhood
    bool Neighbor[8];
    //store starting point
    POINT ptStart;
    ptStart.x=x;
    ptStart.y=y;
    //next map location
    POINT ptNext;
    for(int dir=0;dir<8;dir++)
    {
        //walk to neighbor
        ptNext=TileWalker.TileWalk(ptStart,(ISODIRECTION)dir);
        //range check
        if(ptNext.x<0 || ptNext.y<0 || ptNext.x>=MAPWIDTH || ptNext.y>=MAPHEIGHT)
        {
            //out of bounds
            Neighbor[dir]=0;
        }
        else
        {
            //check map location
            if(mlMap[ptNext.x][ptNext.y].bRoad)
            {
                //road
                Neighbor[dir]=1;
            }
            else
            {
                //no road
                Neighbor[dir]=0;
            }
        }
    }
    //clear road flags
    mlMap[x][y].iRoad=0;
    //add road flags as appropriate
    if(Neighbor[ISO_NORTHEAST]) mlMap[x][y].iRoad|=ROAD_NORTHEAST;
    if(Neighbor[ISO_SOUTHEAST]) mlMap[x][y].iRoad|=ROAD_SOUTHEAST;
    if(Neighbor[ISO_SOUTHWEST]) mlMap[x][y].iRoad|=ROAD_SOUTHWEST;
    if(Neighbor[ISO_NORTHWEST]) mlMap[x][y].iRoad|=ROAD_NORTHWEST;
}

void CalcRoadNeighborhood(int x,int y)//calculate for a tile neighborhood
{
    //send tile(x,y) to calculate fringe function
    CalcRoad(x,y);
    //store center point
    POINT ptCenter;
    ptCenter.x=x;
    ptCenter.y=y;
    POINT ptNeighbor;
    //loop through directions
    for(int dir=0;dir<8;dir++)
    {
        //determine neighbor
        ptNeighbor=TileWalker.TileWalk(ptCenter,(ISODIRECTION)dir);
        //send neighbor to calculation function
        CalcRoad(ptNeighbor.x,ptNeighbor.y);
    }
}