/* Dogfight.c */

/* Program: a dog fighting game */

/* Author: Gregory McIntyre */

/* First edited: 28/08/97 */

/* Last edited: 11/23/97 */

#include <stdio.h>

#include <allegro.h>

#include "dogdata.h"

// game constants

#define SET_W 640 // } resolution

#define SET_H 480 // }

#define CALLBACKS (256*1) // if 2 tables need to be set up then this

// will be 256 * 2

// level constants

#define CLOUD_TRANSPARENCY 180 // 0 <= CLOUD_TRANSPARENCY <= 255

// colours (NB: these are values for "base" colours which are the darkest versions

// of these colours)

// to brighten a colour, add a number between 1 and 15 to it

// adding 16 will choose the next colour - this number (16) is defined as PAL_DIFFERENCE

#define GREY 16

#define RED 32

#define BLUE 48

#define YELLOW 64

#define PURPLE 80

#define GREEN 96

#define ORANGE 112

// ***** TYPE DEFINITIONS ***************************************************************

// translucency tables

COLOR_MAP trans_table;

// global count for call back functions' progress meters

int callback_count;

// global palette

PALETTE pal;

// ***** MAIN PROGRAM CODE **************************************************************

// progress indicator for the color table calculations

void callback_func()

{

// function is called 256 times during the translucency table setup

callback_count++;

// draw the progress bar's frame

rect(screen, SCREEN_W/4, SCREEN_H/2-11, SCREEN_W*3/4, SCREEN_H/2+11, GREY+15);

// add to the progress bar

rectfill(screen, (callback_count+1)*((SCREEN_W/2)-1)/(CALLBACKS+1)+SCREEN_W/4, SCREEN_H/2-10, ((callback_count+1)*((SCREEN_W/2)-1)/(CALLBACKS+1))+(((SCREEN_W/2)-1)/CALLBACKS)+SCREEN_W/4, SCREEN_H/2+10, (callback_count+1)*(GREY+15)/(CALLBACKS+1));

}

// ***** MAIN ***************************************************************************

int main(void)

{

BITMAP *scrbuffer;

DATAFILE *main_data;

int vmode_error;

RGB black = { 0, 0, 0 };

// initialise allegro

allegro_init();

install_keyboard();

install_timer();

//install_sound(DIGI_AUTODETECT, MIDI_AUTODETECT, NULL);

// load main data file into memory

main_data = load_datafile("dogfight.dat");

// use the palette stored in the datafile and

// set the "clear" colour from a working hot pink to an invisible black

memcpy(&pal, main_data[MAINPAL].dat, sizeof(pal));

// enter graphics mode -- don't debug from here --

vmode_error = set_gfx_mode(GFX_AUTODETECT, SET_W, SET_H, 0, 0);

if (vmode_error) {

printf("Error setting graphics mode...\n%s\n\n", allegro_error);

allegro_exit();

exit(1);

}

set_palette(pal);

set_color(0, &black);

// build a colour lookup table for translucent drawing

// NB: 128 translucency = 50%

textout_centre_ex(screen, main_data[FONTSMALL].dat, "Dogfight by Gregory McIntyre", SCREEN_W/2, SCREEN_H/2-58, GREY+15, -1);

textout_centre_ex(screen, font, "Loading. Please wait...", SCREEN_W/2, SCREEN_H/2-20, GREY+15, -1);

callback_count = 0;

create_trans_table(&trans_table, main_data[MAINPAL].dat, CLOUD_TRANSPARENCY, CLOUD_TRANSPARENCY, CLOUD_TRANSPARENCY, callback_func);

// allocate memory for screen buffer

scrbuffer = create_bitmap(SCREEN_W, SCREEN_H); clear(scrbuffer);

// when everything is ready fade out and go to the title screen

fade_out(10);

title_page(scrbuffer, main_data);

// free allocated memory and exit allegro

destroy_bitmap(scrbuffer);

unload_datafile(main_data);

allegro_exit();

// print a message that will be displayed at the DOS prompt on leaving

printf("Thankyou for playing Dogfight.\n");

printf("Dogfight was created using the Allegro game library.\n");

printf("It's free so enjoy and distribute at your leasure.\n\n");

printf("-------------------------------\n");

printf("The author can be contacted at:\n\n");

printf("gregm@pcug.org.au*\n\n");

printf("-------------------------------\n\n");

printf("Have a nice day!\n");

printf("\n");

printf("* Email no longer valid.\n");

return 0;

}

END_OF_MAIN();