How to give a packfile a name? http://www.allegro.cc/forums/view/567779 Allegro.cc Forum Thread matthew@allegro.cc (Matthew Leverton) Thu, 23 Feb 2006 09:19:14 +0000

While doing a map editor for the RPG we're making, we've found that it would be very convenient to be able to give the packfiles we use a name during the editing, and not having to go back to the code to do it, could anyone point out how? Here's an example of the function we're using:

1void save_map()
2{
3 PACKFILE *pfile;
4
5 pfile=pack_fopen("mapaprueba.map", "wp");
6 for (m=0; m<1; m++)
7 {
8 for (k=0; k<2; k++)
9 {
10 for (l=0; l<2; l++)
11 {
12 for (i=0; i<32; i++)
13 {
14 for (j=0; j<24; j++)
15 {
16 pack_iputl(mapa.grid<i>[j].tile[k][l].capas[m], pfile);
17 } } } } }
18 pack_fclose(pfile);
19}

What we would like to do is to somehow put the name of the map form the editor not the compiler. We'd really appreciate it if anyone points us in the right direction :). TXS!!
Cheers.

]]> no-reply@allegro.cc (jaime barrachina) Sat, 18 Feb 2006 20:52:34 +0000 
void save_map(char *filename)
{
 PACKFILE *pfile;
       
 pfile=pack_fopen(filename, "wp");
 [...]
}

save_map("mapaprueba.map");

? :P

]]> no-reply@allegro.cc (gnolam) Sat, 18 Feb 2006 20:59:17 +0000
gnolam said:

void save_map(char *filename)
{
 PACKFILE *pfile;
       
 pfile=pack_fopen(filename, "wp");
 [...]
}

save_map("mapaprueba.map");

But that doesn't even compile... :P

]]> no-reply@allegro.cc (miran) Sat, 18 Feb 2006 21:13:46 +0000

Txs people, you are right dint think of that... not to used to think in C... anyone could point me out to some functions the allegro has for managing user input (its for the same thing, now that i can change the name the file has, i want th user to be able to do it by himself)

Txs a lot... I'm relay sorry to have to come back to ask over and over again :(

Cheers!

]]> no-reply@allegro.cc (jaime barrachina) Sun, 19 Feb 2006 22:46:54 +0000

there are none beside the allegro GUI stuff but here some code from Chris he thought up a way to do it.
it was in the code gallery.

Author: Chris Barry
Version:
edit: the file seems to have lostest it host i think i down loaded it befor ill find it and post it.;D
http://www.allegro.cc/resource/code/text-input.php

edit:

if your looking for more examples of stuff check out my game in the Projects RPG area.
it is very up-to date. don't be to shy to wright a review ;D. good luck;;D

]]> no-reply@allegro.cc (piccolo) Sun, 19 Feb 2006 23:04:21 +0000

TXS everyone! Problem solved :)

]]> no-reply@allegro.cc (jaime barrachina) Mon, 20 Feb 2006 02:44:07 +0000
Allegro.cc said:

404
File not found.

]]> no-reply@allegro.cc (ImLeftFooted) Mon, 20 Feb 2006 07:24:03 +0000

witch file is that ???

]]> no-reply@allegro.cc (piccolo) Mon, 20 Feb 2006 11:15:48 +0000

Then let's burn it for crimes against the church, Yoda!

]]> no-reply@allegro.cc (gnolam) Mon, 20 Feb 2006 22:29:27 +0000

Or you can use a save file dialog...

]]> no-reply@allegro.cc (BAF) Tue, 21 Feb 2006 00:27:42 +0000

piccolo: Try clicking that link you posted.

]]> no-reply@allegro.cc (ImLeftFooted) Tue, 21 Feb 2006 01:14:37 +0000

ok i think this is all the code from the link

1// edittext.cpp
2#include <allegro.h>
3#include <string>
4using namespace std;
5 
6#define WHITE makecol(255, 255, 255)
7 
8int main()
9{
10 // typical Allegro initialization
11 allegro_init();
12 install_keyboard();
13 set_gfx_mode(GFX_AUTODETECT, 320, 240, 0, 0);
14 
15 // all variables are here
16 BITMAP* buffer = create_bitmap(320, 240); // initialize the double buffer
17 string edittext; // an empty string for editting
18 string::iterator iter = edittext.begin(); // string iterator
19 int caret = 0; // tracks the text caret
20 bool insert = true; // true of should text be inserted
21
22 // the game loop
23 do
24 {
25 while(keypressed())
26 {
27 int newkey = readkey();
28 char ASCII = newkey & 0xff;
29 char scancode = newkey >> 8;
30 
31 // a character key was pressed; add it to the string
32 if(ASCII >= 32 && ASCII <= 126)
33 {
34 // add the new char, inserting or replacing as need be
35 if(insert || iter == edittext.end())
36 iter = edittext.insert(iter, ASCII);
37 else
38 edittext.replace(caret, 1, 1, ASCII);
39 
40 // increment both the caret and the iterator
41 caret++;
42 iter++;
43 }
44 // some other, "special" key was pressed; handle it here
45 else
46 switch(scancode)
47 {
48 case KEY_DEL:
49 if(iter != edittext.end()) iter = edittext.erase(iter);
50 break;
51 
52 case KEY_BACKSPACE:
53 if(iter != edittext.begin())
54 {
55 caret--;
56 iter--;
57 iter = edittext.erase(iter);
58 }
59 break;
60
61 case KEY_RIGHT:
62 if(iter != edittext.end()) caret++, iter++;
63 break;
64
65 case KEY_LEFT:
66 if(iter != edittext.begin()) caret--, iter--;
67 break;
68
69 case KEY_INSERT:
70 if(insert) insert = 0; else insert = 1;
71 break;
72 
73 default:
74 
75 break;
76 }
77 }
78
79 // clear screen
80 clear(buffer);
81 
82 // output the string to the screen
83 textout(buffer, font, edittext.c_str(), 0, 10, WHITE);
84 
85 // output some stats using Allegro's printf functions
86 textprintf(buffer, font, 0, 20, WHITE, "length: %d", edittext.length());
87 textprintf(buffer, font, 0, 30, WHITE, "capacity: %d", edittext.capacity());
88 textprintf(buffer, font, 0, 40, WHITE, "empty?: %d", edittext.empty());
89 if(insert)
90 textout(buffer, font, "Inserting", 0, 50, WHITE);
91 else
92 textout(buffer, font, "Replacing", 0, 50, WHITE);
93 
94 // draw the caret
95 vline(buffer, caret * 8, 8, 18, WHITE);
96 
97 // blit to screen
98 blit(buffer, screen, 0, 0, 0, 0, 320, 240);
99 
100 }while(!key[KEY_ESC]); // end of game loop
101
102 // clean up
103 destroy_bitmap(buffer);
104 set_gfx_mode(GFX_TEXT, 0, 0, 0, 0);
105
106 return 0;
107}
108END_OF_MAIN()

]]> no-reply@allegro.cc (piccolo) Tue, 21 Feb 2006 03:04:38 +0000
Quote:

if(insert) insert = 0; else insert = 1;

Imo this is much cleaner 

insert = !insert;

What about home and end? Personally I think insert is more of an annoance then a feature, and you support it but not home and end? :P shame on you.

Anyway, you also forgot about two important things. 1) The box scroll! The text inside an input widget needs to scroll to the left and right so that the user sees the correct data inside the box. And 2) clicking to move the caret. There doesnt seem to be a way to click somewhere to get the caret to move there.

Anyway, heres some code ripped out of my Input widget. Its a bit dependent on internal frameworks and such, but it hopefully conveys the idea.

1Input::Action Input::onIdle()
2{
3 string &value = attributes["value"];
4
5 if(hasFocus && keypressed()) {
6
7 int val = readkey();
8
9 if((val >> 8) == KEY_ENTER && attributes.count("enterAction")) {
10
11 GuiScreen::active->generateAction(attributes["enterAction"], this);
12 }
13 else if((val >> 8) == KEY_BACKSPACE) {
14
15 if(cursorPos != 0 && !value.empty()) {
16
17 value.erase(cursorPos - 1, 1);
18
19 setCursorPos(cursorPos - 1);
20 boundsCheckScroll();
21 }
22 }
23 else if((val >> 8) == KEY_DEL) {
24
25 if(cursorPos < (signed)value.size() && !value.empty()) {
26
27 value.erase(cursorPos, 1);
28
29 setCursorPos(cursorPos);
30 boundsCheckScroll();
31 }
32 }
33 else if((val >> 8) == KEY_LEFT) {
34
35 setCursorPos(cursorPos - 1);
36 }
37 else if((val >> 8) == KEY_RIGHT) {
38
39 setCursorPos(cursorPos + 1);
40 }
41 else if((val >> 8) == KEY_HOME) {
42
43 setCursorPos(0);
44 }
45 else if((val >> 8) == KEY_END) {
46
47 setCursorPos(value.size());
48 }
49 else if(val & 0xff) {
50
51 if(!attributes.count("restrictTo") || attributes["restrictTo"].find((char)(val & 0xff)) != string::npos) {
52
53 value.insert(cursorPos, 1, val & 0xff);
54 setCursorPos(cursorPos + 1);
55
56 if(attributes.count("checkOnType")) {
57
58 Widget *widget = GuiScreen::active->findByKey("name", attributes["checkOnType"]);
59
60 if(widget)
61 widget->attributes["checked"] = "1";
62 }
63
64 if(attributes.count("uncheckOnType")) {
65
66 Widget *widget = GuiScreen::active->findByKey("name", attributes["uncheckOnType"]);
67
68 if(widget)
69 widget->attributes["checked"] = "0";
70 }
71 }
72 }
73
74 if(value.empty()) {
75
76 if(attributes.count("checkOnEmpty")) {
77
78 Widget *widget = GuiScreen::active->findByKey("name", attributes["checkOnEmpty"]);
79
80 if(widget)
81 widget->attributes["checked"] = "1";
82 }
83
84 if(attributes.count("uncheckOnEmpty")) {
85
86 Widget *widget = GuiScreen::active->findByKey("name", attributes["uncheckOnEmpty"]);
87
88 if(widget)
89 widget->attributes["checked"] = "0";
90 }
91 }
92
93 if(attributes.count("syncValueWith"))
94 syncValue();
95 }
96
97 return OK;
98}
99 
100void Input::load()
101{
102 if(attributes.count("syncValueWith"))
103 syncValue();
104
105 setCursorPos(attributes["value"].size());
106}
107 
108void Input::syncValue()
109{
110 string &value = attributes["value"];
111
112 Widget *widget = GuiScreen::active->findByKey("name", attributes["syncValueWith"]);
113
114 if(widget)
115 if(attributes.count("isConfirm"))
116 widget->attributes["confirm"] = value;
117 else
118 widget->attributes["value"] = value;
119}
120 
121int Input::visibleChars()
122{
123 string &value = attributes["value"];
124
125 int w = this->w - 32;
126
127 for(unsigned int i = scrollPos; i < value.size(); i++) {
128
129 w -= getWidth(value.at(i));
130
131 if(w <= 0)
132 return i - scrollPos;
133 }
134
135 return value.size() - scrollPos;
136}
137 
138int Input::getWidth(string str)
139{
140 FontRenderer &font = Print::getFontRenderer();
141
142 if(attributes["special"] == "password")
143 str = string(str.size(), '*');
144
145 return font.stringWidth(str);
146}
147 
148int Input::getWidth(char c)
149{
150 FontRenderer &font = Print::getFontRenderer();
151
152 if(attributes["special"] == "password")
153 return font.width('*');
154 else
155 return font.width(c);
156}
157 
158int Input::getCursorPixel()
159{
160 string &value = attributes["value"];
161
162 int ret = 0;
163
164 for(int i = scrollPos; i < cursorPos; i++)
165 ret += getWidth(value.at(i));
166
167 return ret;
168}
169 
170void Input::setCursorPixel(int x)
171{
172 string &value = attributes["value"];
173
174 int newPos, tmp;
175 string::iterator itr = value.begin();
176
177 //x -= 16;
178
179 for(newPos = 0; newPos < scrollPos && itr != value.end(); newPos++)
180 ++itr;
181
182 for(; itr != value.end(); ++itr, ++newPos) {
183
184 tmp = getWidth(*itr);
185
186 if(x <= tmp / 2)
187 break;
188
189 x -= tmp;
190 }
191
192 setCursorPos(newPos);
193}
194 
195void Input::setCursorPos(int newPos)
196{
197 string &value = attributes["value"];
198
199 if(newPos > (signed)value.size())
200 newPos = value.size();
201
202 if(newPos < 0)
203 newPos = 0;
204
205 cursorPos = newPos;
206
207 boundsCheckScroll();
208}
209 
210void Input::boundsCheckScroll()
211{
212 string &value = attributes["value"];
213
214 if(scrollPos >= (signed)value.size())
215 scrollPos = value.size() - 1;
216 if(scrollPos < 0)
217 scrollPos = 0;
218
219 if(cursorPos < scrollPos)
220 scrollPos = cursorPos;
221 else while(cursorPos > scrollPos && getWidth(value.substr(scrollPos, cursorPos - scrollPos)) > w - 32)
222 scrollPos++;
223}

It also supports variable width fonts, which is why there are setCursorPos and getCursorPos functions.

]]> no-reply@allegro.cc (ImLeftFooted) Thu, 23 Feb 2006 09:19:14 +0000