I am making a simple game using C and Allegro 5. I am currently hiding the mouse and swapping it for a custom mouse icon. The cursor icon's position is altered whenever a mouse movement is detected, then that mouse position is passed to variables mouse_x and mouse_y.
What bothers me is that if, for example, I have my mouse cursor at coordinates mouse_x = 100 and mouse_y = 200, and I press any key on the keyboard, the mouse cursor is shown both on the correct mouse_x and mouse_y coordinates AND two completely random y and x variables at the same time. Once I stop holding the keyboard's key, the wrong cursor disappears.
I have no clue what happens, but whenever I uninstall the keyboard using al_uninstall_keyboard(), that error is gone.
This is my code:
#SelectExpand
1#include <stdio.h>
2#include <stdlib.h>
3#include <allegro5\allegro.h>
4#include <allegro5\allegro_image.h>
5#include <allegro5\allegro_primitives.h>
6#include <allegro5\allegro_audio.h>
7#include <allegro5\allegro_font.h>
8#include <allegro5\allegro_ttf.h>
9#include <allegro5\allegro_acodec.h>
10
11enum gameMode
{menu, farmGame, stdend
};
12enum soil
{normal, wet
};
13enum soil2
{unplow, plow
};
14enum cropType
{none, tomato
};
15
16typedef struct gDisp
//game display
17{
18 int width
;
19 int height
;
20 ALLEGRO_DISPLAY *display
;
21}gDisp
;
22
23typedef struct fCrop
//farm crop
24{
25 cropType crop
;
26 ALLEGRO_TIMEOUT *waterNeed
;
27 ALLEGRO_TIMEOUT *growth
[4]; //Crop's growth time on all stages
28}fCrop
;
29
30typedef struct fTile
//farm tiles
31{
32 int xpoint
;
33 int ypoint
;
34 int size
;
35 soil ground
;
36 soil2 ground2
;
37 fCrop crop
;
38}fTile
;
39
40int main
()
41{
42 //Allegro Initialization Area
43 al_init();
44 al_init_image_addon();
45 al_init_primitives_addon();
46 al_init_font_addon();
47 al_init_ttf_addon();
48 al_init_acodec_addon();
49
50 //Allegro Installation Area
51 al_install_keyboard();
52 al_install_mouse();
53
54 //Allegro Variable Area
55 ALLEGRO_EVENT_QUEUE *queue
= al_create_event_queue();
56 ALLEGRO_EVENT ev
;
57 ALLEGRO_FONT *font[3];
58
59 //Allegro Variable Declaration Area
60
61 //My Enums Area
62 gameMode gamemode
= menu
;
63 ALLEGRO_BITMAP *bmp
[30]; //20-30: Menu Bitmaps
64 ALLEGRO_BITMAP *ico
;
65
66 //My Structs Area
67 gDisp disp
;
68 disp
= {0,
0, NULL
};
69
70 //Games... Here we go!
71 if (gamemode
== menu
)
72 {
73 char *currgamelist
[4] = { "PLAY",
"TUTORIAL",
"CREDITS" };
74 disp.width
= 600, disp.height
= 600, disp.display
= al_create_display(disp.width, disp.height
);
75 ico
= al_load_bitmap("tomato_seedbase.png");
76 bmp
[0] = al_load_bitmap("Normal-select.png");
77 bmp
[1] = al_load_bitmap("Link-select.png");
78 al_set_window_title(disp.display,
"Farming Hero");
79 al_set_display_icon(disp.display, ico
);
80 al_hide_mouse_cursor(disp.display
);
81 font[0] = al_load_font("PressStart2P.ttf",
32,
0);
82 al_clear_to_color(al_map_rgb(0,
0,
0));
83 al_register_event_source(queue,
al_get_mouse_event_source());
84 al_register_event_source(queue,
al_get_keyboard_event_source());
85 int mouse_x;
86 int mouse_y;
87 while (gamemode
== menu
)
88 {
89 al_wait_for_event(queue,
&ev
);
90 al_clear_to_color(al_map_rgb(0,
0,
0));
91 if (ev.type
== ALLEGRO_EVENT_KEY_DOWN
)
92 if (ev.keyboard.keycode
== ALLEGRO_KEY_ESCAPE
)
93 {
94 al_destroy_display(disp.display
);
95 al_destroy_font(font[0]);
96 return 0;
97 }
98 al_draw_text(font[0],
al_map_rgb(255,
255,
255),
105,
50,
0,
"FARMING HERO");
99 al_draw_text(font[0],
al_map_rgb(255,
255,
255),
30,
200,
0, currgamelist
[0]);
100 al_draw_text(font[0],
al_map_rgb(255,
255,
255),
30,
300,
0, currgamelist
[1]);
101 al_draw_text(font[0],
al_map_rgb(255,
255,
255),
30,
400,
0, currgamelist
[2]);
102 al_draw_text(font[0],
al_map_rgb(255,
255,
255),
30,
500,
0,
"EXIT");
103 al_draw_text(font[0],
al_map_rgb(255,
255,
255),
30,
500,
0,
" ");
104 if(ev.type
== ALLEGRO_EVENT_MOUSE_BUTTON_DOWN
)
105 if (ev.mouse.button
& 1)
106 {
107 if (ev.mouse.x
>= 30 && ev.mouse.y
>= 200 && ev.mouse.x
<= al_get_text_width(font[0], currgamelist
[0]) + 30 && ev.mouse.y
<= 232)
108 gamemode
= farmGame
;
109 if (ev.mouse.x
>= 30 && ev.mouse.y
>= 300 && ev.mouse.x
<= al_get_text_width(font[0], currgamelist
[1]) + 30 && ev.mouse.y
<= 332)
110 al_destroy_display(disp.display
),
al_destroy_font(font[0]),
exit(0);
111 if (ev.mouse.x
>= 30 && ev.mouse.y
>= 400 && ev.mouse.x
<= al_get_text_width(font[0], currgamelist
[2]) + 30 && ev.mouse.y
<= 432)
112 al_destroy_display(disp.display
),
al_destroy_font(font[0]),
exit(0);
113 if (ev.mouse.x
>= 30 && ev.mouse.y
>= 500 && ev.mouse.x
<= al_get_text_width(font[0],
"EXIT") + 30 && ev.mouse.y
<= 532)
114 al_destroy_display(disp.display
),
al_destroy_font(font[0]),
exit(0);
115 }
116 if (ev.type
== ALLEGRO_EVENT_MOUSE_AXES
)
117 mouse_x = ev.mouse.x,
mouse_y = ev.mouse.y
;
118 if (mouse_x >= 30 && mouse_x <= al_get_text_width(font[0], currgamelist
[0]) + 30 && mouse_y >= 195 && mouse_y <= 235)
119 al_draw_text(font[0],
al_map_rgb(255,
239,
0),
30,
200,
0, currgamelist
[0]),
al_draw_bitmap(bmp
[1],
mouse_x,
mouse_y,
0);
120 else if (mouse_x >= 30 && mouse_x <= al_get_text_width(font[0], currgamelist
[1]) + 30 && mouse_y >= 295 && mouse_y <= 335)
121 al_draw_text(font[0],
al_map_rgb(255,
239,
0),
30,
300,
0, currgamelist
[1]),
al_draw_bitmap(bmp
[1],
mouse_x,
mouse_y,
0);
122 else if (mouse_x >= 30 && mouse_x <= al_get_text_width(font[0], currgamelist
[2]) + 30 && mouse_y >= 395 && mouse_y <= 435)
123 al_draw_text(font[0],
al_map_rgb(255,
239,
0),
30,
400,
0, currgamelist
[2]),
al_draw_bitmap(bmp
[1],
mouse_x,
mouse_y,
0);
124 else if (mouse_x >= 30 && mouse_x <= al_get_text_width(font[0],
"EXIT") + 30 && mouse_y >= 495 && mouse_y <= 535)
125 al_draw_text(font[0],
al_map_rgb(255,
239,
0),
30,
500,
0,
"EXIT"),
al_draw_bitmap(bmp
[1],
mouse_x,
mouse_y,
0);
126 else{ al_draw_bitmap(bmp
[0],
mouse_x,
mouse_y,
0); };
127 al_flip_display();
128 }
129 }
130 if (gamemode
== farmGame
)
131 {
132 ALLEGRO_TIMER *fps
= al_create_timer(1.
00 / 60.
00);
133 font[0] = al_load_font("PressStart2P.ttf",
8,
0);
134 font[1] = al_load_font("PressStart2P.ttf",
16,
0);
135 al_register_event_source(queue,
al_get_timer_event_source(fps
));
136 int mouse_x,
mouse_y;
137 mouse_x = -50,
mouse_y = 0;
138 fCrop empty
= { none,
0,
0 };
139 fTile tile
[100];
140 int x_prep, y_prep
; //prepare the tile's configuration
141 x_prep
= 0, y_prep
= 0;
142 for (int i
= 0; i
< 100; i
++)
143 {
144 if (x_prep
== 10)
145 x_prep
= 0, y_prep
++;
146 tile
[i
] = { x_prep, y_prep,
51, normal, unplow, empty
};
147 x_prep
++;
148 }
149 al_clear_to_color(al_map_rgb(0,
0,
0));
150 al_flip_display();
151 bmp
[0] = al_load_bitmap("link-select.png");
152 bmp
[1] = al_load_bitmap("ground_normal.png");
153 bmp
[9] = al_create_bitmap(disp.width, disp.height
);
154 bmp
[30] = al_load_bitmap("tomato_seedbase.png");
155 al_uninstall_keyboard();
156 al_start_timer(fps
);
157 al_set_target_bitmap(bmp
[9]);
158 al_draw_filled_rectangle(512,
2, disp.width
- 2,
508,
al_map_rgb(150,
120,
0));
159 al_draw_filled_rectangle(2,
512,
512, disp.height
- 2,
al_map_rgb(150,
120,
0));
160 al_draw_filled_rectangle(512,
512, disp.width
- 2, disp.height
- 2,
al_map_rgb(150,
120,
0));
161 al_draw_rectangle(512,
2, disp.width
- 2,
511,
al_map_rgb(70,
50,
0),
5);
162 al_draw_rectangle(2,
512,
512, disp.height
- 2,
al_map_rgb(70,
50,
0),
5);
163 al_draw_rectangle(512,
512, disp.width
- 2, disp.height
- 2,
al_map_rgb(70,
50,
0),
5);
164 al_set_target_backbuffer(disp.display
);
165 while (gamemode
== farmGame
)
166 {
167 char tileinfo
[5][15];
168 al_clear_to_color(al_map_rgb(0,
0,
0));
169 al_wait_for_event(queue,
&ev
);
170 for (int i
= 0; i
< 100; i
++)
171 {
172 if (tile
[i
].ground
== normal
&& tile
[i
].ground2
== unplow
)
173 al_draw_bitmap(bmp
[1], tile
[i
].xpoint
* tile
[i
].size, tile
[i
].ypoint
* tile
[i
].size,
0);
174 if (mouse_x >= 0 && mouse_x <= 508 && mouse_y >= 0 && mouse_y <= 508)
175 if (mouse_x >= tile
[i
].xpoint
* tile
[i
].size
&& mouse_x <= tile
[i
].xpoint
* tile
[i
].size
+ tile
[i
].size
&& mouse_y >= tile
[i
].ypoint
* tile
[i
].size
&& mouse_y <= tile
[i
].ypoint
* tile
[i
].size
+ tile
[i
].size
)
176 {
177 tile
[i
].crop.crop
== none ?
strcpy(tileinfo
[1],
"NONE") : 0, tile
[i
].crop.crop
== tomato ?
strcpy(tileinfo
[1],
"TOMATOES") : 0;
178 tile
[i
].ground
== normal ?
strcpy(tileinfo
[2],
"DRY") : 0, tile
[i
].ground
== wet ?
strcpy(tileinfo
[2],
"WET") : 0;
179 tile
[i
].ground2
== unplow ?
strcpy(tileinfo
[3],
"UNPLOW") : 0, tile
[i
].ground2
== plow ?
strcpy(tileinfo
[3],
"PLOW") : 0;
180 }
181 }
182 al_draw_bitmap(bmp
[0], ev.mouse.x, ev.mouse.y,
0);
183 if (ev.type
== ALLEGRO_EVENT_MOUSE_AXES
)
184 mouse_x = ev.mouse.x,
mouse_y = ev.mouse.y
;
185 if (ev.type
== ALLEGRO_EVENT_KEY_DOWN
)
186 if (ev.keyboard.keycode
== ALLEGRO_KEY_ESCAPE
)
187 gamemode
= stdend
;
188 al_draw_bitmap(bmp
[9],
0,
0,
0);
189 if (mouse_x >= 503 && mouse_x <= disp.height
&& mouse_y >= 10 && mouse_y <= al_get_bitmap_height(bmp
[30]))
190 al_draw_tinted_bitmap(bmp
[30],
al_map_rgb(125,
255,
37),
503,
10,
0),
al_draw_text(font[1],
al_map_rgb(125,
255,
37),
525,
100,
0,
"SHOP");
191 else{ al_draw_bitmap(bmp
[30],
503,
10,
0),
al_draw_text(font[1],
al_map_rgb(255,
255,
255),
525,
100,
0,
"SHOP"); }
192 if (tileinfo
[1] != NULL
&& tileinfo
[2] != NULL
&& tileinfo
[3] != NULL
)
193 {
194 al_draw_textf(font[0],
al_map_rgb(255,
255,
255),
520,
520,
0,
"%s", tileinfo
[1]);
195 al_draw_textf(font[0],
al_map_rgb(255,
255,
255),
520,
550,
0,
"%s", tileinfo
[2]);
196 al_draw_textf(font[0],
al_map_rgb(255,
255,
255),
520,
580,
0,
"%s", tileinfo
[3]);
197 }
198 al_draw_bitmap(bmp
[0],
mouse_x,
mouse_y,
0);
199 al_flip_display();
200 }
201 }
202 if (gamemode
== stdend
)
203 {
204 al_rest(2);
205 al_destroy_display(disp.display
);
206 }
207 return 0;
208}
]]>