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comparison ext/guichan-0.8.1/examples/openlayer.hpp @ 0:4a0efb7baf70

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* Datasets becomes the new trunk and retires after that :-)
author mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
date Sun, 29 Jun 2008 18:44:17 +0000
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-1:000000000000 0:4a0efb7baf70
1 /*
2 * Code that sets up an OpenLayer application with Guichan using the
3 * Guichan OpenLayer back end.
4 */
5
6 #include <guichan.hpp>
7 #include <guichan/openlayer.hpp>
8
9 namespace openlayer
10 {
11 // All back ends contain objects to make Guichan work on a
12 // specific target - in this case OpenLayer - and they are a Graphics
13 // object to make Guichan able to draw itself using OpenLayer, an
14 // input objec to make Guichan able to get user input using OpenLayer
15 // and an ImageLoader object to make Guichan able to load images
16 // using OpenLayer.
17 gcn::OpenLayerGraphics* graphics;
18 gcn::OpenLayerInput* input;
19 gcn::OpenLayerImageLoader* imageLoader;
20
21 /**
22 * Initialises the OpenLayer application. This function creates the global
23 * Gui object that can be populated by various examples.
24 */
25 void init()
26 {
27 // We simply initialise OpenLayer as we would do with any OpenLayer application.
28 ol::Setup::SetupProgram(true, true, true);
29 ol::Setup::SetupScreen(640, 480, WINDOWED);
30
31 // Now it's time to initialise the Guichan OpenLayer back end.
32
33 imageLoader = new gcn::OpenLayerImageLoader();
34 // The ImageLoader Guichan should use needs to be passed to the Image object
35 // using a static function.
36 gcn::Image::setImageLoader(imageLoader);
37 graphics = new gcn::OpenLayerGraphics();
38 // We need to tell the OpenLayer Graphics object how big the screen is.
39 graphics->setTargetPlane(640, 480);
40 input = new gcn::OpenLayerInput();
41
42 // Now we create the Gui object to be used with this OpenLayer application.
43 globals::gui = new gcn::Gui();
44 // The Gui object needs a Graphics to be able to draw itself and an Input
45 // object to be able to check for user input. In this case we provide the
46 // Gui object with OpenLayer implementations of these objects hence making Guichan
47 // able to utilise OpenLayer.
48 globals::gui->setGraphics(graphics);
49 globals::gui->setInput(input);
50 }
51
52 /**
53 * Halts the OpenLayer application.
54 */
55 void halt()
56 {
57 delete globals::gui;
58
59 delete imageLoader;
60 delete input;
61 delete graphics;
62 }
63
64 /**
65 * Runs the OpenLayer application.
66 */
67 void run()
68 {
69 ol::Bitmap mouse_bmp;
70 mouse_bmp.Load(mouse_sprite, ol::CONVERT_MAGIC_PINK);
71
72 if (!mouse_bmp )
73 {
74 ol::OlError("Pointer not loaded.");
75 }
76
77 while(!key[KEY_ESC])
78 {
79 // Now we let the Gui object perform its logic.
80 globals::gui->logic();
81 // Now we let the Gui object draw itself.
82 globals::gui->draw();
83
84 // We draw the mouse pointer manually.
85 mouse_bmp.Blit(mouse_x, mouse_y);
86 // Finally we update the screen.
87 ol::GfxRend::RefreshScreen();
88 }
89 }
90 }