Just sitting here goofing around with things I've not really dabbled with. I attempted tile mapping for the first time this morning.
Tile sheet:
Screenshot of Test Running:
{"name":"606875","src":"\/\/djungxnpq2nug.cloudfront.net\/image\/cache\/8\/e\/8e486e77b94eae78ff1606cfc6e58799.png","w":642,"h":512,"tn":"\/\/djungxnpq2nug.cloudfront.net\/image\/cache\/8\/e\/8e486e77b94eae78ff1606cfc6e58799"}
Code for it (used ugly globals and terrible practices, but I was in a hurry so I did it sporadic) :
1#include <allegro5/allegro.h>
2#include <allegro5/allegro_image.h>
3#include <fstream>
4#include <vector>
5#include <iostream>
6
7using namespace std;
8
9const int BLOCK_SIZE = 32;
10vector <ALLEGRO_BITMAP*> tiles;
11
12int loadCounterX = 0, loadCounterY = 0, mapSizeX, mapSizeY;
13
14void loadMap(const char* filename, int map[][100])
15{
16 ifstream openfile(filename);
17 if(openfile.is_open())
18 {
19 openfile >> mapSizeX >> mapSizeY;
20 while(!openfile.eof())
21 {
22 openfile >> map[loadCounterX][loadCounterY];
23 loadCounterX++;
24
25 if(loadCounterX >= mapSizeX)
26 {
27 loadCounterX = 0;
28 loadCounterY++;
29 }
30 }
31 }
32 else
33 {
34 cout << "Cannot open map.txt. " << endl;
35 }
36}
37
38void drawMap(int map[][100],vector<ALLEGRO_BITMAP*>spr);
39
40int main()
41{
42 al_init();
43 al_install_keyboard();
44 al_init_image_addon();
45
46 int map[100][100];
47 loadMap("map.txt", map);
48
49 ALLEGRO_BITMAP *sprite;
50 ALLEGRO_DISPLAY *display;
51 ALLEGRO_EVENT_QUEUE *event_queue;
52 ALLEGRO_TIMER *timer;
53
54 const int FPS = 60;
55 const int SCREEN_W = 640;
56 const int SCREEN_H = 480;
57
58 timer = al_create_timer(1.0/FPS);
59 display = al_create_display(SCREEN_W, SCREEN_H);
60 event_queue = al_create_event_queue();
61
62 sprite = al_load_bitmap("tilesheet.png");
63 int tileOffset = 0;
64 for(int i = 0; i < 2; i++)
65 {
66 for(int j = 0; j < 2; j++)
67 {
68 tiles.push_back(al_create_sub_bitmap(sprite, i * BLOCK_SIZE, j * BLOCK_SIZE, BLOCK_SIZE, BLOCK_SIZE));
69 tileOffset = tileOffset + BLOCK_SIZE;
70 }
71 }
72
73 bool redraw = true;
74 bool doexit = false;
75
76 al_register_event_source(event_queue, al_get_display_event_source(display));
77 al_register_event_source(event_queue, al_get_timer_event_source(timer));
78 al_register_event_source(event_queue, al_get_keyboard_event_source());
79
80 al_clear_to_color(al_map_rgb(0, 0, 0));
81 al_flip_display();
82 al_start_timer(timer);
83
84 while(!doexit)
85 {
86 ALLEGRO_EVENT ev;
87 al_wait_for_event(event_queue, &ev);
88
89 if(ev.type == ALLEGRO_EVENT_TIMER)
90 {
91 redraw = true;
92 }
93 else if(ev.type == ALLEGRO_EVENT_DISPLAY_CLOSE)
94 {
95 break;
96 }
97 else if(ev.type == ALLEGRO_EVENT_KEY_DOWN)
98 {
99 switch(ev.keyboard.keycode)
100 {
101
102 }
103 }
104 else if(ev.type == ALLEGRO_EVENT_KEY_UP)
105 {
106 switch(ev.keyboard.keycode)
107 {
108 case ALLEGRO_KEY_ESCAPE:
109 doexit = true;
110 break;
111 }
112 }
113
114 if(redraw && al_is_event_queue_empty(event_queue))
115 {
116 redraw = false;
117 al_clear_to_color(al_map_rgb(0, 0, 0));
118 drawMap(map, tiles);
119 al_flip_display();
120 }
121 }
122
123 return 0;
124
125}
126
127void drawMap(int map[][100], vector<ALLEGRO_BITMAP*>spr)
128{
129 for(int i = 0; i < mapSizeX; i++)
130 {
131 for(int j = 0; j < mapSizeY; j++)
132 {
133 if(map[i][j] == 0)
134 al_draw_bitmap(spr[0], i * BLOCK_SIZE, j * BLOCK_SIZE, 0);
135 if(map[i][j] == 1)
136 al_draw_bitmap(spr[1], i * BLOCK_SIZE, j * BLOCK_SIZE, 0);
137 if(map[i][j] == 2)
138 al_draw_bitmap(spr[2], i * BLOCK_SIZE, j * BLOCK_SIZE, 0);
139 if(map[i][j] == 3)
140 al_draw_bitmap(spr[3], i * BLOCK_SIZE, j * BLOCK_SIZE, 0);
141 }
142 }
143}
Just can't figure why it seems to have the grey lines across it. Not bad for a first time though.
Even have a semi-working game done too, Global Destruction. I have to tweak some of the things in the code and remove a couple of things, then I'll post the code here too.
]]>
Not because of the content, but the form. Giving yourself credit is also an art. 
.