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This thread is locked; no one can reply to it.
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| Kindof Newbie question |
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Craig Harrison
Member #5,255
November 2004
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I have a game I am developing that works perfectly when I use set_color_depth(16); but when I change it to set_color_depth(32); and recompile, it won't exit. That is the only change. My game loop is basicly bool exit_key = false; Yet for some reason unknown to me it works fine in with 16 color depth but the while loop doesn't seem to exit in 32 color depth. Yet that is the only change! Am I missing something or what? Thanks! |
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ReyBrujo
Moderator
January 2001
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Which version you are using? -- |
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Craig Harrison
Member #5,255
November 2004
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Allegro version 4.2 (the binary for windows) |
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ReyBrujo
Moderator
January 2001
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Can you post the full code? Does your card/monitor support that resolution? -- |
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Chris Katko
Member #1,881
January 2002
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Also, when you say "won't exit" is that exactly what you mean? Does it refuse to quit, or does Allegro not fully shutdown (it leaves your program sitting in the task bar), etc. -----sig: |
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Elverion
Member #6,239
September 2005
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Also, next time, please give a better title to your posts than "Kindof Newbie question". I think your problem probably lies in one of two areas. Are you sure that you are initialising the keyboard right? If so, it could be because of the window focus. This happened to me before, but then after downloading the newest allegro source and compiling it, now I don't have this problem anymore. Try ALT-TAB to another window, then switch back to your program. Now if it exits, then you know where your problem is. -- |
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Craig Harrison
Member #5,255
November 2004
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By "doesn't exit" I mean it is as if the while (condition) is still being met, even though "condition" is in fact false and checks in other parts of the code show that "condition" HAS changed to false. Yet the while loop continues to loop with 32 color depth, but not 16. Here is the code: 1#include <allegro.h> // Allegro Header file
2#include <math.h>
3#include "data.h"
4
5 ////////////////////////////////////////////////////////////////////////////
6 ///////// VARIABLES ////////////////////////////////////////////////////
7 ////////////////////////////////////////////////////////////////////////////
8
9// Core Variables
10bool exit_key = false;
11const int max_bullets = 300;
12const int max_enemies = 100;
13const int tmax_speed = 8;
14const int bullet_sprite[3] = {bantibody,bbantibody,bbbantibody};
15float max_speed = tmax_speed;
16
17// Bullet Structure
18struct bullet {
19 int type;
20 float xspeed, yspeed;
21 float x, y;
22 int sprite;
23} p_sys[max_bullets];
24
25// Player Structure
26struct WBC {
27 float xspeed, x, y, kickback, frame;
28} player;
29
30// Enemy Structure
31struct enemy {
32 float type, x, y, xspeed, yspeed, kickback, frame, health, width, height, offset;
33 int sprite;
34} enemy[max_enemies];
35
36// Game Variables
37int gun_type = 1;
38int gun_lvl = 1;
39int screen_x = 0;
40int screen_y = 9999999;
41int sprite_w = 9; // Bullet sprite offset
42int star_x = 0;
43int star_y = 0;
44int shipsize = 35;
45int padding = 45 + shipsize;
46
47 ////////////////////////////////////////////////////////////////////////////
48 ///////// FUNCTIONS ////////////////////////////////////////////////////
49 ////////////////////////////////////////////////////////////////////////////
50
51// Make Bullet
52void make_bullet(float xoff, float yoff, float xspeed, float yspeed)
53{
54 xspeed += (rand()%21-10)*0.1;
55 for (int p = 0; p < max_bullets; p++)
56 {
57 if (p_sys[p].type == 0) {p_sys[p].type = gun_type; p_sys[p].xspeed = xspeed; p_sys[p].yspeed = yspeed; p_sys[p].x = int(player.x + xoff); p_sys[p].y = int(screen_y + 500 - yoff); p_sys[p].sprite = rand()%3; p = max_bullets * 2;}
58 }
59}
60
61// Control Ship
62void ship_control()
63{
64 // Kickback from bullets
65 if (player.y < player.kickback) player.y += 10;
66 if (player.y > player.kickback) player.y = player.kickback;
67 if (player.kickback > 0) player.kickback -= 1.5;
68
69 // Get player input (left/right)
70 if (key[KEY_LEFT] && player.xspeed > -max_speed)
71 {
72 player.xspeed -= 0.2;
73 }
74 if (key[KEY_RIGHT] && player.xspeed < max_speed)
75 {
76 player.xspeed += 0.2;
77 }
78 player.x += player.xspeed;
79
80 // Edges
81 if (player.x < padding * 2 && player.xspeed < 0) {max_speed = tmax_speed * (player.x - padding)/padding; if (player.xspeed < -max_speed) player.xspeed = -max_speed;}
82 else if (player.x > 800 - (padding * 2) && player.xspeed > 0) {max_speed = tmax_speed * ((800 - player.x) - padding)/padding; if (player.xspeed > max_speed) player.xspeed = max_speed;}
83 else max_speed = tmax_speed;
84 if ((player.x < padding && player.xspeed < 0) || ((800 - player.x) < padding && player.xspeed > 0)) max_speed = 0;
85
86 // Friction
87 if (!key[KEY_LEFT] && player.xspeed < 0) {player.xspeed += 0.2; if (player.xspeed > 0) player.xspeed = 0;}
88 if (!key[KEY_RIGHT] && player.xspeed > 0) {player.xspeed -= 0.2; if (player.xspeed < 0) player.xspeed = 0;}
89
90 // Animation
91 player.frame += 0.1;
92 if (player.frame >= 3) player.frame = 0;
93}
94
95void player_input()
96{
97 // SWITCH GUNS
98 if (key[KEY_1]) gun_lvl = 1;
99 if (key[KEY_2]) gun_lvl = 2;
100 if (key[KEY_3]) gun_lvl = 3;
101 if (key[KEY_4]) gun_lvl = 4;
102 if (key[KEY_5]) gun_lvl = 5;
103}
104
105void ship_shoot()
106{
107 if (key[KEY_SPACE] && player.kickback <= 0)
108 {
109 // Set player offset
110 player.kickback = 30;
111 // Set Bullet Attributes
112 if (gun_lvl == 1) {make_bullet(0,0,0,-12);}
113 if (gun_lvl == 2) {make_bullet(-24,-40,0,-12); make_bullet(24,-40,0,-12);}
114 if (gun_lvl == 3) {make_bullet(-24,-40,-2,-12); make_bullet(24,-40,2,-12); make_bullet(0,0,0,-12);}
115 if (gun_lvl == 4) {make_bullet(-24,-40,-2,-12); make_bullet(24,-40,2,-12); make_bullet(-13,-40,-1,-13); make_bullet(13,-40,1,-13);}
116 if (gun_lvl == 5) {make_bullet(0,0,0,-13); make_bullet(-24,-40,-2,-12); make_bullet(24,-40,2,-12); make_bullet(-13,-40,-1,-13); make_bullet(13,-40,1,-13);}
117 }
118}
119
120// Move Background
121void move_background()
122{
123 if (screen_x >= 0) star_x = (int(screen_x / 640) * 640) - screen_x;
124 if (screen_y >= 0) star_y = (int(screen_y / 800) * 800) - screen_y;
125 if (screen_x < 0) star_x = (int(screen_x / 640) * 640) + screen_x;
126 if (screen_y < 0) star_y = (int(screen_y / 800) * 800) + screen_y;
127}
128
129// Timer
130volatile long speed_counter = 0;
131void increment_speed_counter()
132{
133 speed_counter++;
134}
135END_OF_FUNCTION(increment_speed_counter);
136
137// Update Variables at beginning of each game loop
138void update_variables()
139{
140 // SPEED COUNTER
141 speed_counter --;
142 // SCREEN POSITION
143 screen_y -= 1;
144 // EXIT
145 if (key[KEY_ESC]) exit_key = true;
146}
147
148
149 ////////////////////////////////////////////////////////////////////////////
150 ///////// MAIN FUNCTION ////////////////////////////////////////////////
151 ////////////////////////////////////////////////////////////////////////////
152
153int main(void)
154{
155 allegro_init(); // Initialize Allegro
156 install_keyboard(); // Initialize keyboard routines
157 install_timer(); // Initialize the timer routines
158 install_mouse(); // Initialize the mouse routines
159 install_sound(DIGI_AUTODETECT,MIDI_AUTODETECT , 0); // Initialize the sound routines
160
161 LOCK_VARIABLE(speed_counter);
162 LOCK_FUNCTION(increment_speed_counter);
163 install_int_ex(increment_speed_counter, BPS_TO_TIMER(60));
164
165 set_color_depth(32);
166 set_gfx_mode(GFX_AUTODETECT_FULLSCREEN, 800, 600, 0, 0);
167 text_mode(-1);
168 srand(5);
169
170 // DATABASE
171 DATAFILE *data;
172 data = load_datafile("data.dat");
173
174 // Bitmaps
175 BITMAP *buffer = create_bitmap(800,600);
176
177 // CLEAR PARTICLE SYSTEM
178 for (int x = 0; x < max_bullets; x++)
179 p_sys[x].type = 0;
180
181 // CLEAR ENEMY SYSTEM
182 for (int x = 0; x < max_enemies; x++)
183 enemy[x].type = 0;
184
185 // Set Player to Center
186 player.x = 200;
187
188 ////////////////////////////////////////////////////////////////////////////
189 ///////// GAME LOOP ////////////////////////////////////////////////////
190 ////////////////////////////////////////////////////////////////////////////
191
192
193 while(!exit_key)
194 {
195 while(speed_counter > 0)
196 {
197 update_variables();
198
199 // UPDATE BULLETS (move, draw, stop, and delete)
200 for (int x = 0; x < max_bullets; x++)
201 {
202 if (p_sys[x].type == 1)
203 {
204 p_sys[x].x += p_sys[x].xspeed;
205 p_sys[x].y += p_sys[x].yspeed;
206 if (p_sys[x].x < padding - 35 || 800 - p_sys[x].x < padding - 35) {p_sys[x].xspeed = 0; p_sys[x].yspeed = 0; p_sys[x].x += rand()%20 - 10; p_sys[x].type = -1;}
207 }
208 // Delete if off screen
209 if (p_sys[x].y + sprite_w * 2 < screen_y || p_sys[x].y - sprite_w * 2 > screen_y + 600) p_sys[x].type = 0;
210 // Blit Bullet Sprite
211 if (p_sys[x].type != 0) masked_blit((BITMAP *)data[bullet_sprite[int(p_sys[x].sprite)]].dat, buffer, 0, 0,(int(p_sys[x].x) - sprite_w) - screen_x,int(p_sys[x].y) - screen_y,62,62);
212 }
213
214 // PLAYER SHIP (draw and control)
215 masked_blit((BITMAP *)data[int(player.frame)].dat, buffer, 0, 0,int(player.x)-shipsize,500 + int(player.y),62,62);
216 ship_control();
217
218 // GUNS (shoot and change)
219 ship_shoot();
220 player_input();
221
222 // SCREEN (blit and clear)
223 acquire_screen();
224 blit(buffer, screen, 0,0,0,0,800,600);
225 release_screen();
226 clear_to_color( buffer,makecol( 0, 0, 0) );
227
228 // BACKGROUND (move and draw)
229 move_background();
230 blit((BITMAP *)data[xback].dat, buffer, 0,0,0,star_y,800,800);
231 blit((BITMAP *)data[xback].dat, buffer, 0,0,0,star_y + 800,800,800);
232 }
233
234 ////////////////////////////////////////////////////////////////////////////
235 ///////// END OF GAME LOOP /////////////////////////////////////////////
236 ////////////////////////////////////////////////////////////////////////////
237
238}
239 // Clear Data
240 destroy_bitmap(buffer);
241 unload_datafile(data);
242
243 return(0);// Exit with no errors
244}
245END_OF_MAIN();
It's probably not the way it is supposed to be coded, but it works. I'm sure there are better ways to do a lot of it. |
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Chris Katko
Member #1,881
January 2002
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Try installing the keyboard after set_gfx_mode. That's all I've got other than the possibility of an Allegro bug. install_keyboard documentation said: Note that on some platforms the keyboard won't work unless you have set a graphic mode, even if this function returns zero before calling set_gfx_mode.
-----sig: |
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Matthew Leverton
Supreme Loser
January 1999
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You can install it before setting the graphics; you just might not be able to use it until after. |
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DanielH
Member #934
January 2001
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What happens if you do some error checking? set_color_depth(32); if ( set_gfx_mode(GFX_AUTODETECT_FULLSCREEN, 800, 600, 0, 0) < 0 ) { return -1; }
void update_variables() { if (key[KEY_ESC]) exit_key = true; } while(speed_counter > 0) { update_variables(); }
there could be something with the timer and speed_counter is never > 0. while( !exit_key ) { if (key[KEY_ESC]) exit_key = true; while(speed_counter > 0) { } } Also, since you are a gnub, noob, ... 1. Indentation is your friend every new section starts x spaces over and brackets line up. I personally like style b, but others choose a.
2. Error checking is your friend
3. Look up coding styles. This is more of a help to those who look at your code ---- There is a slight problem with my logic. if ( !data ) return -1 if ( !buffer ) return -1; if buffer fails then datafile is never unloaded. Instead you could do this data = load_datafile(); if ( data ) { buffer = create_bitmap(); if ( buffer ) { //...// destroy_bitmap( buffer ); } unload_datafile( data ); } Or you could do this.
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