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This thread is locked; no one can reply to it.
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| Rendering tilemap making the game slow. |
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zero volt
Member #15,793
November 2014
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Hello game developers, here's my code and the tiles are in the attachments: 1#include <stdio.h>
2#include <allegro5/allegro.h>
3#include <allegro5/allegro_image.h>
4
5int main(int argc, char **argv){
6
7 int width = 960;
8 int height = 576;
9
10 int pos_y = height - 80;
11 int pos_x = (width / 2) - 20;
12
13 int jump = 10;
14
15 bool done = false;
16 bool redraw = false;
17
18 bool isYup = false;
19 bool isYdown = false;
20 bool isXright = false;
21 bool isXleft = false;
22 bool isSpace = false;
23
24 int xOff = 0;
25 int yOff = 0;
26
27 int mapColumns = 15;
28 int mapSize = 135;
29 int tileSize = 64;
30
31 int map[] = {
32 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
33 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0,
34 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0,
35 0, 1, 1, 1, 1, 0, 1, 1, 0, 0, 1, 1, 1, 1, 0,
36 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0,
37 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0,
38 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0,
39 0, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 0,
40 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
41 };
42
43 // -------------------------------------------------------------
44
45 ALLEGRO_DISPLAY *display = NULL;
46 ALLEGRO_EVENT_QUEUE *event_queue = NULL;
47 ALLEGRO_TIMER *timer = NULL;
48 ALLEGRO_BITMAP *bgSheet = NULL;
49 ALLEGRO_BITMAP *player;
50
51 // -------------------------------------------------------------
52
53 al_init();
54 al_init_image_addon();
55 al_install_keyboard();
56
57 // -------------------------------------------------------------
58
59 bgSheet = al_load_bitmap("background.png");
60 display = al_create_display(width, height);
61 event_queue = al_create_event_queue();
62 timer = al_create_timer(1.0 / 60);
63 player = al_create_bitmap(40, 80);
64
65 // -------------------------------------------------------------
66
67 al_register_event_source(event_queue, al_get_keyboard_event_source());
68 al_register_event_source(event_queue, al_get_timer_event_source(timer));
69 al_start_timer(timer);
70
71 al_set_target_bitmap(player);
72 al_clear_to_color(al_map_rgb(255, 255, 255));
73 al_set_target_bitmap(al_get_backbuffer(display));
74
75 // -------------------------------------------------------------
76
77 while(!done) {
78 ALLEGRO_EVENT ev;
79 al_wait_for_event(event_queue, &ev);
80
81
82 if(ev.type == ALLEGRO_EVENT_KEY_DOWN) {
83 switch(ev.keyboard.keycode) {
84 case ALLEGRO_KEY_UP:
85 isYup = true;
86 break;
87 case ALLEGRO_KEY_DOWN:
88 isYdown = true;
89 break;
90 case ALLEGRO_KEY_RIGHT:
91 isXright = true;
92 break;
93 case ALLEGRO_KEY_LEFT:
94 isXleft = true;
95 break;
96 case ALLEGRO_KEY_SPACE:
97 isSpace = true;
98 break;
99 case ALLEGRO_KEY_ESCAPE:
100 done = true;
101 break;
102 }
103
104 }
105
106 else if(ev.type == ALLEGRO_EVENT_KEY_UP) {
107 switch(ev.keyboard.keycode) {
108 case ALLEGRO_KEY_UP:
109 isYup = false;
110 break;
111 case ALLEGRO_KEY_DOWN:
112 isYdown = false;
113 break;
114 case ALLEGRO_KEY_RIGHT:
115 isXright = false;
116 break;
117 case ALLEGRO_KEY_LEFT:
118 isXleft = false;
119 break;
120 case ALLEGRO_KEY_SPACE:
121 isSpace = false;
122 break;
123 }
124 }
125
126
127 else if(ev.type == ALLEGRO_EVENT_TIMER) {
128 if(isYup)
129 pos_y -= 10;
130 if(isYdown)
131 pos_y += 10;
132 if(isXright)
133 pos_x += 10;
134 if(isXleft)
135 pos_x -= 10;
136
137 if(isSpace)
138 pos_y -= jump;
139 else if(pos_y >= height - 80)
140 pos_y = height - 80;
141 else
142 pos_y += jump;
143
144 redraw = true;
145 }
146
147 if(redraw && al_is_event_queue_empty(event_queue)) {
148 redraw = false;
149
150 int i;
151 for(i = 0; i < mapSize; i++) {
152 int x = tileSize * map[i];
153 int y = 0;
154 int x_width = tileSize;
155 int y_height = tileSize;
156 int x_screen = tileSize * (i % mapColumns);
157 int y_screen = tileSize * (i / mapColumns);
158
159 al_draw_bitmap_region(bgSheet, x, y, x_width, y_height, x_screen, y_screen, 0);
160
161 }
162
163 al_draw_bitmap(player, pos_x, pos_y, 0);
164 al_flip_display();
165 al_clear_to_color(al_map_rgb(0,0,0));
166 }
167
168 }
169
170 // -------------------------------------------------------------
171
172 al_destroy_bitmap(player);
173 al_destroy_bitmap(bgSheet);
174 al_destroy_event_queue(event_queue);
175 al_destroy_timer(timer);
176 al_destroy_display(display);
177
178 // -------------------------------------------------------------
179
180 return 0;
181}
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jmasterx
Member #11,410
October 2009
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Could you post your main.cpp file separately? When I copy the code into my editor it comes in as 1 big long line. Agui GUI API -> https://github.com/jmasterx/Agui |
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zero volt
Member #15,793
November 2014
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Oh I see, I'm just gonna attach the file. |
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LennyLen
Member #5,313
December 2004
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I've attached it as a .cpp file
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jmasterx
Member #11,410
October 2009
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You need to allocate your bitmap AFTER creating your display: display = al_create_display(width, height); bgSheet = al_load_bitmap("background.png"); The way you have it causes it to load as a memory bitmap which is very slow. Also, after profiling, I think you are in Debug build, in release build it still ran fast on my machine. But yeah, I think that is your issue. Agui GUI API -> https://github.com/jmasterx/Agui |
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zero volt
Member #15,793
November 2014
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Yeah, it works perfectly now, thank you. |
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Edgar Reynaldo
Major Reynaldo
May 2007
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zero volt said: -lallegro-5.0.10-md is that the debug build ? No, that is the dynamic c-runtime release build. It depends on your libc++ and libc dlls. Quote: and I want to understand what is the difference between putting it at first or at second ? I mean why would it create it as a memory bitmap if it was at first line ? Because you haven't created a display yet, there is nothing to attach the bitmap to for a device context, so it can't be a video bitmap yet, so it is a memory bitmap. You have to call al_convert_bitmaps after creating the display to 'fix' this. Or just create all your bitmaps after the display. My Website! | EAGLE GUI Library Demos | My Deviant Art Gallery | Spiraloid Preview | A4 FontMaker | Skyline! (Missile Defense) Eagle and Allegro 5 binaries | Older Allegro 4 and 5 binaries | Allegro 5 compile guide |
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zero volt
Member #15,793
November 2014
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While I'm at it, I want to ask one more question: I added this those lines starting from the if statement to check for collision detection only for the rocks but I couldn't figure out why it's not working. int i; for(i = 0; i < mapSize; i++) { int x = tileSize * map[i]; int y = 0; int x_width = tileSize; int y_height = tileSize; int x_screen = tileSize * (i % mapColumns); int y_screen = tileSize * (i / mapColumns) + 30; al_draw_bitmap_region(bgSheet, x, y, x_width, y_height, x_screen, y_screen, 0); if((pos_y + 80) >= y_screen && map[i] == 0) pos_y = y_screen - 80;
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jmasterx
Member #11,410
October 2009
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What exactly do you want your collision code to do? Agui GUI API -> https://github.com/jmasterx/Agui |
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zero volt
Member #15,793
November 2014
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Sorry for posting late, I thought the thread was closed!, becasue I couldn't submit a new post, I believe one the rules is you can only submit one post at a time? Okay so, here's what I want: I created another for while loop, and so in every iteration I will check for every rock if it has collided in any way with the player. here's my code so far, I stayed up long last night trying to do it! but it doesn't make sense: 1for(i = 0; i < mapSize; i++) {
2 int tile_x = tileSize * (i % mapColumns);
3 int tile_y = tileSize * (i / mapColumns);
4 int tile_width = tile_x + 64;
5 int tile_height = tile_y + 64;
6
7 if(map[i] == 0) {
8
9 if(pos_y < tile_height && pos_y + 80 > tile_height && (pos_x + 40 < tile_width && pos_x > tile_x) ||
10 (pos_y < tile_height && pos_y + 80 > tile_height && (pos_x + 40 < tile_width && pos_x + 40 > tile_x) ||
11 (pos_y < tile_height && pos_y + 80 > tile_height && (pos_x > tile_x && pos_x < tile_width))))
12 {
13 pos_y = tile_height;
14 break;
15
16 }
17
18 if(((pos_y + 80) > tile_y) && (pos_y < tile_y)
19 && (pos_x + 40) < tile_width && pos_x > tile_x) {
20 pos_y = tile_y - 80;
21 break;
22
23 }
24 }
25 }
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jmasterx
Member #11,410
October 2009
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There are lots of interesting articles on 2D tile collision: Maybe base your collision on that and ask about specific issues you run into. In general, you want to completely avoid things like ypos + 80 - 40 / 20 - 32 + 9...... it gets messy very fast Instead you want to make a structure for a rectangle, and build functions that can check if your player's rectangle is inside a tile of value 0, if it is, get him out of there. Generally you want your player to have a velocity vector (how far does he go in 1 frame and in what direction), that way, when he hits something, you can just move back that amount. More precise physics will calculate the penetration amount and apply a linear impulse opposite the penetration amount, but that's for more advanced stuff like car physics. Agui GUI API -> https://github.com/jmasterx/Agui |
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