aliens.c~

是一个键盘测试程序

/*
    ALIENS: A silly little game demonstrating the SDL and mixer libraries
    Copyright (C) 1998  Sam Lantinga

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

    Sam Lantinga
    5635-34 Springhouse Dr.
    Pleasanton, CA 94588 (USA)
    [e-mail]
*/

#include <stdlib.h>
#include <stdio.h>
#include <time.h>

#include "SDL.h"
#include "SDL_mixer.h"
#include "SDL_image.h"
#include <string.h>



#ifdef macintosh
#define DIR_SEP	":"
#define DIR_CUR ":"
#else
#define DIR_SEP	"/"
#define DIR_CUR	""
#endif
#define DATAFILE(X)	DIR_CUR "data" DIR_SEP X

#define	FRAMES_PER_SEC	50
#define PLAYER_SPEED	4
#define MAX_SHOTS	3
#define SHOT_SPEED	6
#define MAX_ALIENS	30
#define ALIEN_SPEED	5
#define ALIEN_ODDS	(1*FRAMES_PER_SEC)
#define EXPLODE_TIME	4

/* define index of image */
#define KEY_T_T 				0
#define KEY_A_UP 				1
#define KEY_A_DOWN 			2
#define KEY_B_UP 				3
#define KEY_B_DOWN 			4
#define KEY_C_UP 				5
#define KEY_C_DOWN 			6
#define KEY_D_UP 				7
#define KEY_D_DOWN 			8
#define KEY_E_UP 				9
#define KEY_E_DOWN 			10
#define KEY_F_UP 				11
#define KEY_F_DOWN 			12
#define KEY_G_UP 				13
#define KEY_G_DOWN 			14
#define KEY_H_UP 				15
#define KEY_H_DOWN 			16
#define KEY_I_UP 				17
#define KEY_I_DOWN 			18
#define KEY_J_UP 				19
#define KEY_J_DOWN 			20
#define KEY_K_UP 				21
#define KEY_K_DOWN 			22
#define KEY_L_UP 				23
#define KEY_L_DOWN 			24
#define KEY_M_UP 				25
#define KEY_M_DOWN 			26
#define KEY_N_UP 				27
#define KEY_N_DOWN 			28
#define KEY_O_UP 				29
#define KEY_O_DOWN 			30
#define KEY_P_UP 				31
#define KEY_P_DOWN 			32
#define KEY_Q_UP 				33
#define KEY_Q_DOWN 			34
#define KEY_R_UP 				35
#define KEY_R_DOWN 			36
#define KEY_S_UP 				37
#define KEY_S_DOWN 			38
#define KEY_T_UP 				39
#define KEY_T_DOWN 			40
#define KEY_U_UP 				41
#define KEY_U_DOWN 			42
#define KEY_V_UP 				43
#define KEY_V_DOWN 			44
#define KEY_W_UP 				45
#define KEY_W_DOWN 			46
#define KEY_X_UP 				47
#define KEY_X_DOWN 			48
#define KEY_Y_UP 				49
#define KEY_Y_DOWN 			50
#define KEY_Z_UP 				51
#define KEY_Z_DOWN 			52

#define KEY_LEFT_UP 			53
#define KEY_LEFT_DOWN 		54
#define KEY_RIGHT_UP 		55
#define KEY_RIGHT_DOWN 		56
#define KEY_UP_UP 			57
#define KEY_UP_DOWN 			58
#define KEY_DOWN_UP 			59
#define KEY_DOWN_DOWN 		60
#define KEY_RETURN_UP 		61
#define KEY_RETURN_DOWN 	62


#define KEY_F1_UP 			63
#define KEY_F1_DOWN 			64
#define KEY_F2_UP 			65
#define KEY_F2_DOWN 			66
#define KEY_F3_UP 			67
#define KEY_F3_DOWN 			68
#define KEY_F4_UP 			69
#define KEY_F4_DOWN 			70

typedef struct {
	int alive;
	int facing;
	int x, y;
	SDL_Surface *image;
} object;

/**/
SDL_Surface *screen;
SDL_Surface *background;
SDL_Surface *imgup;
SDL_Surface *imgdown;

/*锛