image not showing

[Quantum1982]

Hi

I am testing some graphics for my maze game, but the gif is not showing. Not sure is I am doing something incorrectly somewhere.

Also, should I show the image here for in case there is something in the color key that is causing the issue ?

Here is the code :

cpp Code: Select all

 
 
#include <irrlicht.h>
#include "driverChoice.h"
 
using namespace irr;
 
#ifdef _MSC_VER
#pragma comment(lib, "Irrlicht.lib")
#endif
 
 
int main()
{
        // ask user for driver
        video::E_DRIVER_TYPE driverType=driverChoiceConsole();
        if (driverType==video::EDT_COUNT)
                return 1;
 
        // create device
 
        IrrlichtDevice *device = createDevice(driverType,
                core::dimension2d<u32>(512, 384),16U,true);
 
        if (device == 0)
                return 1; // could not create selected driver.
 
        device->setWindowCaption(L"Irrlicht Engine - 2D Graphics Demo");
 
        video::IVideoDriver* driver = device->getVideoDriver();
 
        /*
        All 2d graphics in this example are put together into one texture,
        2ddemo.png. Because we want to draw colorkey based sprites, we need to
        load this texture and tell the engine, which part of it should be
        transparent based on a colorkey.
 
        In this example, we don't tell it the color directly, we just say "Hey
        Irrlicht Engine, you'll find the color I want at position (0,0) on the
        texture.". Instead, it would be also possible to call
        driver->makeColorKeyTexture(images, video::SColor(0,0,0,0)), to make
        e.g. all black pixels transparent. Please note that
        makeColorKeyTexture just creates an alpha channel based on the color.
        */
        video::ITexture* cheese = driver->getTexture("../../media/cheese.gif");
        driver->makeColorKeyTexture(cheese, core::position2d<s32>(0,0));
 
        gui::IGUIFont* font = device->getGUIEnvironment()->getBuiltInFont();
        gui::IGUIFont* font2 =
                device->getGUIEnvironment()->getFont("../../media/fonthaettenschweiler.bmp");
 
        core::rect<s32> cheese_rect(0,0,100,100);
        core::rect<s32> imp2(387,15,423,78);
 
        /*
        Prepare a nicely filtering 2d render mode for special cases.
        */
        driver->getMaterial2D().TextureLayer[0].BilinearFilter=true;
        driver->getMaterial2D().AntiAliasing=video::EAAM_FULL_BASIC;
 
        while(device->run() && driver)
        {
                if (device->isWindowActive())
                {
                        u32 time = device->getTimer()->getTime();
 
                        driver->beginScene(true, true, video::SColor(255,255,255,255));
 
                        driver->draw2DImage(cheese, core::position2d<s32>(50,50),
                                cheese_rect, 0,
                                video::SColor(255,255,255,255), false);
 
                        /*
                        // draw flying imp
                        driver->draw2DImage(images, core::position2d<s32>(164,125),
                                (time/500 % 2) ? imp1 : imp2, 0,
                                video::SColor(255,255,255,255), true);
 
                        // draw second flying imp with colorcylce
                        driver->draw2DImage(images, core::position2d<s32>(270,105),
                                (time/500 % 2) ? imp1 : imp2, 0,
                                video::SColor(255,(time) % 255,255,255), true);
                        */
 
 
                        driver->endScene();
                }
        }
 
        device->drop();
 
        return 0;
}
 
 

Cheers

[hybrid]

Well, the console log should be clear about this: Unsupported file format. Anyway, why gif? Do you want to load an animated gif? We don't support any animated picture format, better use a sprite map which has all the image parts side by side in an array. How to use these sprites should be explained somewhere on the forum here, there are many sprite approaches available.

[Quantum1982]

Thanks for reply

Ya should have looked at that. Ok so I resaved the image as "cheese.png", but it still doesn't load. I tested the "2ddemo.png" and that loads fine.

The image looks like this :



Cheers

[CuteAlien]

Are you getting any console output for that?

[Quantum1982]

Yes, says it cannot load the image at that location.

Cheers

[hybrid]

Well, then most likely the path does not match. Note that starting from an IDE can change the working directory, while starting it by double-clicking usually resolves to the local directory, unless otherwise fixed in the properties. When starting from command line, usually the current directoy is taken as working directory. All relative paths are used from that dir.
BTW: Using an image format with alpha channel included (e.g. png) results in much better transparency and shorter setup times.