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// A game fragment taken from Andre La Mothe's book
// The Black Art of 3D Games Programming
// PROG2_1.CPP - A simple console based game to illustrate
// a generic game loop
// INCLUDES ///////////////////////////////////////////////
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <conio.h>
#include <windows.h>
#include <time.h>
// DEFINES ////////////////////////////////////////////////
#define MAX_X 77 // maximum x position for player
#define SCROLL_POS 24 // the point that scrolling occurs
// PROTOTYPES /////////////////////////////////////////////
void Init_Graphics(void);
inline void Set_Color(int fcolor, int bcolor);
inline void Draw_String(int x,int y, char *string);
// GLOBALS ////////////////////////////////////////////////
CONSOLE_SCREEN_BUFFER_INFO con_info; // holds screen info
HANDLE hconsole; // handle to console
int game_running = 1; // state of game, 0=done, 1=run
// FUNCTIONS //////////////////////////////////////////////
void Init_Graphics(void)
{
// this function initializes the console graphics engine
COORD console_size = {80,25}; // size of console
// seed the random number generator with time
srand((unsigned)time(NULL));
// open i/o channel to console screen
hconsole=CreateFile("CONOUT$",GENERIC_WRITE | GENERIC_READ,
FILE_SHARE_READ | FILE_SHARE_WRITE,
0L, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0L);
// make sure we are in 80x25
SetConsoleScreenBufferSize(hconsole,console_size);
// get details for console screen
GetConsoleScreenBufferInfo(hconsole,&con_info);
} // end Init_Graphics
///////////////////////////////////////////////////////////
inline void Set_Color(int fcolor, int bcolor=0)
{
// this function sets the color of the console output
SetConsoleTextAttribute(hconsole,(WORD)((bcolor << 4) |
fcolor));
} // Set_Color
///////////////////////////////////////////////////////////
inline void Draw_String(int x,int y, char *string)
{
// this function draws a string at the given x,y
COORD cursor_pos; // used to pass coords
// set printing position
cursor_pos.X = x;
cursor_pos.Y = y;
SetConsoleCursorPosition(hconsole,cursor_pos);
// print the string in current color
printf("%s",string);
} // end Draw_String
///////////////////////////////////////////////////////////
inline void Clear_Screen(void)
{
// this function clears the screen
// set color to white on black
Set_Color(15,0);
// clear the screen
for (int index=0; index<=25; index++)
Draw_String(0, SCROLL_POS,"\n");
} // end Clear_Screen
// MAIN GAME LOOP /////////////////////////////////////////
void main(void)
{
char key; // player input data
int player_x = 40; // player's x position
// SECTION: initialization
// set up the console text graphics system
Init_Graphics();
// clear the screen
Clear_Screen();
// SECTION: main event loop, this is where all the action
// takes place, the general loop is erase-move-draw
while(game_running)
{
// SECTION: erase all the objects or clear screen
// nothing to erase in our case
// SECTION: get player input
if (kbhit())
{
// get keyboard data, and filter it
key = toupper(getch());
// is player trying to exit, if so exit
if (key=='Q' || key==27)
game_running = 0;
// is player moving left
if (key=='A')
player_x--;
// is player moving right
if (key=='S')
player_x++;
} // end if
// SECTION: game logic and further processing
// make sure player stays on screen
if (++player_x > MAX_X)
player_x=MAX_X;
if (--player_x < 0)
player_x=0;
// SECTION: draw everything
// draw next star at random position
Set_Color(15,0);
Draw_String(rand()%80, SCROLL_POS,".\n");
// draw player
Set_Color(rand()%15,0);
Draw_String(player_x,0,"<-*->");
Draw_String(0,0,"");
// SECTION: synchronize to a constant frame rate
Sleep(100);
} // end while
// SECTION: shutdown and bail
Clear_Screen();
printf("\nG A M E O V E R \n\n");
} // end main
how to improve it ??help me ~~>+*.*+< [em4] [em4] [em4] [em4] |
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发表于 2003-11-14 02:35:00
