Hi Elvis,

I was inspecting the samples project and I was wondering,
you have a single event handler for each type (keyboard, mouse, etc) per a scene - if you have 500 npcs of different types in 1 scene how do you manage their behavior (response) to each event that is sent in a organized and comfortable way?

I mean, how can you handle game logic easily this way?
if player attacks mob, where do you handle its response logic?
Or if a user clicks the right arrow button,
You do all the logic inside the scene’s handleKeyboardEvent method?

Shouldn’t the player input handling be encapsulated?

Thanks in advance

=> ./samples
Application directory: /home/acron/projects/personal/ouzel/samples
Failed to find file /home/acron/.org.ouzel/samples/settings.ini
Using OpenGL render driver
GLX OpenGL 3.2 context created
X Error of failed request:  BadMatch (invalid parameter attributes)
  Major opcode of failed request:  154 (GLX)
  Minor opcode of failed request:  5 (X_GLXMakeCurrent)
  Serial number of failed request:  46
  Current serial number in output stream:  46

Compilation went fine, just won't make a window. Tried with and without i3, same result.

=> glxinfo | grep "OpenGL"                                                                                                                                                                                                                                   
OpenGL vendor string: NVIDIA Corporation
OpenGL renderer string: GeForce GT 730/PCIe/SSE2
OpenGL core profile version string: 4.5.0 NVIDIA 384.111
OpenGL core profile shading language version string: 4.50 NVIDIA
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile
OpenGL core profile extensions:
OpenGL version string: 4.5.0 NVIDIA 384.111
OpenGL shading language version string: 4.50 NVIDIA
OpenGL context flags: (none)
OpenGL profile mask: (none)

=> glxgears -info
GL_RENDERER   = GeForce GT 730/PCIe/SSE2
GL_VERSION    = 4.5.0 NVIDIA 384.111
GL_VENDOR     = NVIDIA Corporation
GL_EXTENSIONS = ...

glxgears runs fine

cling based C++ as scripting language / hot code reload
Why? Able to run C++ script in runtime or compile it for max speed ( as in example https://github.com/derofim/cling-cmake )

HOT code reload
possible approaches:

store app state
fix cling undo for files
https://root-forum.cern.ch/t/loading-unloading-class-as-interpreted-macro-in-cling-multiple-times/32976/2

execute cling code to change callbacks & variables
nested cling::Interpreter with multiple cling::MetaProcessor
IDK how to do it, but you can create child cling::Interpreter

Buttons' eventhandlers are added upon creation, rather than upon entering like Scenes.

sharedEngine->getEventDispatcher()->addEventHandler(&eventHandler);

This will leak. Maybe better put eventHandler adding/removing upon entering/leaving?

GamepadXI don't have check for dead zones. Why?

I see the only thing available in sprite is setOffset, specifying absolute offsets e.g. (0, 20f) rather than relative ones (0.5f, 0.5f). Is this by design?

if I set exclusive full screen setting to true in the Settings.ini file and start a new instance of the engine in Windows, the engine crashes in Window->init, as the window is initialized before the renderer.

I noticed the problem happens here:
File: NativeWindowWin.cpp
Method: switchFullscreen

Inside:
if (exclusiveFullscreen)
{
//uninitialized D3D renderer is called
// from the NativeWindowWin.
}

Am I doing anything wrong or is there a fix?

Thanks in advance

In function handleDeviceConnect(const DIDEVICEINSTANCEW* didInstance) missed CoInitializeEx before call CoCreateInstance:

HRESULT hres = CoInitializeEx(NULL, COINIT_APARTMENTTHREADED);
if (FAILED(hres))
{
	LOG_ERROR_F( "CoInitializeEx() failure:" , (unsigned long)hres );
	return;
}

On the android, the engine dies when an activity with an engine view is paused and resumed.

Can you have any solution about this problem?

Let me know if I'm missing make arguments. According to the docs, there should be a build directory but I am not seeing that. I tried running make anyway and get these errors:

 make
make -C engine DEBUG= PLATFORM= VC_DIR= 
make[1]: Entering directory '/home/pi/Code/ouzel/engine'
g++ -c -x c++  -std=c++17 -Wall -Wpedantic -Wextra -Wshadow -Wdouble-promotion -Woverloaded-virtual -Wold-style-cast -I"../shaders" -I"../external/khronos" -I"../external/smbPitchShift" -I"../external/stb" -O3 -include pch/cpp/Prefix.h -MMD -MP core/Window.cpp -o core/Window.o
In file included from core/Window.cpp:21:
core/linux/NativeWindowLinux.hpp:12:12: fatal error: bcm_host.h: No such file or directory

I have mesa, opengl, and dev lib packages installed already that are commonly used for pi development.

Code: master latest, sample project
Renderer: Metal

At RenderDeviceMetal.mm line 797, ouzel reset shaderConstantBuffer.offset = 0 if offset larger than it's size. But what if the shader buffer contains data which is committed yet.
I wrote a demo to draw 10k sprites with different uniforms, and only half of them are drawn correctly.

As shader buffer size is 1024 * 1024, and buffer alignment is 256, 1024 * 1024 = 256* (4*1024), it holds 4k uniforms at most.

Animators inherits from components and naturally do not and should not have "draw" methods.

Buttons are better implemented using scale9 images (to allow for flexible resizing)

Hello,guy:
when I run Android Sample application,click button then app crash,follow this:

2019-07-24 11:07:30.175 19782-19782/? A/DEBUG: *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
2019-07-24 11:07:30.175 19782-19782/? A/DEBUG: Build fingerprint: 'OnePlus/OnePlus7Pro_CH/OnePlus7Pro:9/PKQ1.190110.001/1907122210:user/release-keys'
2019-07-24 11:07:30.175 19782-19782/? A/DEBUG: Revision: '0'
2019-07-24 11:07:30.175 19782-19782/? A/DEBUG: ABI: 'arm64'
2019-07-24 11:07:30.175 19782-19782/? A/DEBUG: pid: 19690, tid: 19738, name: Render >>> org.ouzel.samples <<<
2019-07-24 11:07:30.175 19782-19782/? A/DEBUG: signal 6 (SIGABRT), code -6 (SI_TKILL), fault addr --------
2019-07-24 11:07:30.175 19782-19782/? A/DEBUG: Abort message: '~/ouzel/samples/app/src/main/jni/../../../../../build/jni/../../ouzel/graphics/opengl/OGLRenderDevice.cpp:1132: virtual void ouzel::graphics::opengl::RenderDevice::process(): assertion "indexBuffer->getBufferId()" failed'
2019-07-24 11:07:30.175 19782-19782/? A/DEBUG: x0 0000000000000000 x1 0000000000004d1a x2 0000000000000006 x3 0000000000000008
2019-07-24 11:07:30.175 19782-19782/? A/DEBUG: x4 0000000000000000 x5 0000000000000000 x6 0000000000000000 x7 0000000000000030
2019-07-24 11:07:30.175 19782-19782/? A/DEBUG: x8 0000000000000083 x9 4cd220f5873fc22a x10 0000000000000000 x11 fffffffc7ffffbdf
2019-07-24 11:07:30.175 19782-19782/? A/DEBUG: x12 0000000000000001 x13 000000005d37cb72 x14 000180df9c14a7c1 x15 0000eac1dc13d4b5
2019-07-24 11:07:30.175 19782-19782/? A/DEBUG: x16 00000078fd5532a8 x17 00000078fd472be4 x18 00005505395ffbcb x19 0000000000004cea
2019-07-24 11:07:30.175 19782-19782/? A/DEBUG: x20 0000000000004d1a x21 000000785d9284f0 x22 000000786c783880 x23 000000785dfae520
2019-07-24 11:07:30.176 19782-19782/? A/DEBUG: x24 000000785d928570 x25 000000785d82b000 x26 00000078fe6595e0 x27 0000000000000002
2019-07-24 11:07:30.176 19782-19782/? A/DEBUG: x28 0000007ff29f8fed x29 000000785d926370
2019-07-24 11:07:30.176 19782-19782/? A/DEBUG: sp 000000785d926330 lr 00000078fd466314 pc 00000078fd46633c
2019-07-24 11:07:30.178 19782-19782/? A/DEBUG: backtrace:
2019-07-24 11:07:30.178 19782-19782/? A/DEBUG: #00 pc 000000000002233c /system/lib64/libc.so (abort+116)
2019-07-24 11:07:30.178 19782-19782/? A/DEBUG: #1 pc 00000000000226b4 /system/lib64/libc.so (__assert2+52)
2019-07-24 11:07:30.178 19782-19782/? A/DEBUG: #2 pc 00000000002f81f8 /data/app/org.ouzel.samples-yifDK61Md4cpZjgZN8V-tA==/lib/arm64/libmain.so (ouzel::graphics::opengl::RenderDevice::process()+8788)
2019-07-24 11:07:30.178 19782-19782/? A/DEBUG: #3 pc 00000000002df0e8 /data/app/org.ouzel.samples-yifDK61Md4cpZjgZN8V-tA==/lib/arm64/libmain.so (ouzel::graphics::opengl::RenderDeviceAndroid::renderMain()+488)
2019-07-24 11:07:30.178 19782-19782/? A/DEBUG: #4 pc 00000000002ee6dc /data/app/org.ouzel.samples-yifDK61Md4cpZjgZN8V-tA==/lib/arm64/libmain.so (ZNSt6__ndk114__thread_proxyINS_5tupleIJNS_10unique_ptrINS_15__thread_structENS_14default_deleteIS3_EEEEMN5ouzel8graphics6opengl19RenderDeviceAndroidEFvvEPSA_EEEEEPvSF+444)
2019-07-24 11:07:30.178 19782-19782/? A/DEBUG: #5 pc 00000000000901b4 /system/lib64/libc.so (__pthread_start(void*)+36)
2019-07-24 11:07:30.178 19782-19782/? A/DEBUG: #6 pc 0000000000023bf8 /system/lib64/libc.so (__start_thread+68)

Thanks . @elnormous

hi, can you add https://github.com/wjakob/nanogui as ouzel's gui system? think about it

In function

 bool FileSystem::readFile(const std::string& filename, std::vector<uint8_t>& data, bool searchResources) const;

... is a lot of reallocations in a vector:

     data.assign(std::istreambuf_iterator<char>(file), std::istreambuf_iterator<char>());

Need append a code resize before assign.

For example:
std::streampos fileSize = file.tellg();
file.seekg(0, std::ios::end);
fileSize = file.tellg() - fileSize;
data.resize(fileSize);
file.seekg(0, std::ios_base::beg);

A vector resize will speed up file uploading in 10 times in the debug mode.

When play a ogg file with AudioDeviceDS in a debug mode audible interrupt of sound.

Code below doesn't work for the OGLES extension string supplied.

                std::string extensions(reinterpret_cast<const char*>(extensionPtr));

                std::istringstream extensionStringStream(extensions);

                for (std::string extension; extensionStringStream >> extensions;)
                {
                    if (extension == "GL_OES_texture_npot")
                    {
                        npotTexturesSupported = true;
                    }

                    Log(Log::Level::INFO) << "npotTexturesSupported: " << npotTexturesSupported;

                }

GL_AMD_compressed_ATC_texture GL_AMD_performance_monitor GL_AMD_program_binary_Z400 GL_EXT_debug_label GL_EXT_debug_marker GL_EXT_discard_framebuffer GL_EXT_robustness GL_EXT_texture_format_BGRA8888 GL_EXT_texture_type_2_10_10_10_REV GL_NV_fence GL_OES_compressed_ETC1_RGB8_texture GL_OES_depth_texture GL_OES_depth24 GL_OES_EGL_image GL_OES_EGL_sync GL_OES_EGL_image_external GL_OES_element_index_uint GL_OES_fbo_render_mipmap GL_OES_fragment_precision_high GL_OES_get_program_binary GL_OES_packed_depth_stencil GL_OES_depth_texture_cube_map GL_OES_rgb8_rgba8 GL_OES_standard_derivatives GL_OES_texture_3D GL_OES_texture_float GL_OES_texture_half_float GL_OES_texture_half_float_linear GL_OES_texture_npot GL_OES_vertex_half_float GL_OES_vertex_type_10_10_10_2 GL_OES_vertex_array_object GL_QCOM_alpha_test GL_QCOM_binning_control GL_QCOM_driver_control GL_QCOM_perfmon_global_mode GL_QCOM_extended_get GL_QCOM_extended_get2 GL_QCOM_tiled_rendering GL_QCOM_writeonly_rendering GL_EXT_sRGB GL_EXT_sRGB_write_c

Class TTFont does not display spaces. Why?

Getting Unknown axis runtime error with PS3 and PS4 V2 controllers. With the PS3 controller axis = 1 (kHIDUsage_GD_Pointer?) in getAxisIndex.

For PS4 V2 axis = 57 (0x39) which is kHIDUsage_GD_Hatswitch. The type is kIOHIDElementTypeInput_Misc and the usagePage is kHIDPage_GenericDesktop. This then calls getAxisIndex at line 106 of GamepadDeviceIOKit.cpp.

Running on macOS 11.2 using Xcode 12.4

Does this engine have or plan to have KDA Direct buffer support like SDL2 has? KDA support would allow our games to be ported to embedded systems that lack window system support (like X window system support in ubuntu)

I Like to build my projects in ninja, and for that and other further persons who'd like others than make, vs or xcode

hello, i want to integrate imgui or nuklear with ouzel, but don't know how to start, is there anyone has free time to do this.

Would you like to replace any double quotes by angle brackets around file names for include statements?

Hi,

How to communicate with ObjC and Java?

I want talk with platform libraries like payment, facebook and firebase.

There is something with callback to support it?

Thanks.

I can see that in SHOW_ALL mode of the camera, contentSize is scaled and contentPosition is set. However upon drawing, is contentPosition taken into account?

Say I have a screen (portrait) of 1200x1920, I set targetContentSize to be (600x400), the content is scaled to 1200x800. When drawing, this 1200x800 rectangle should be centered vertically,shouldn't it? I fail to see where in the engine that process this step.

Hi Elnormous, Great work on your multi-platform support!

I have a question tho regarding Engine::run (). Won't it be hogging the CPU as it is not event-triggered (blocking mode) nor has it sleep ()?

The wiki currently only has placeholder content.

In cocos2dx it is possible to add a callback to the animation sequence, such as

CCSequence::create(ease, callBack, NULL)

Is it possible to do the same in Ouzel?

Hi, I notice that for each scene you actually create a source file (hpp and cpp).
Is it possible to have scene loading dynamically, let's say, from file:
for example, I have 1 text file containing all the scenes for example. Scenes.txt:

level_1,
level_2,
level_3

and to load them dynamically from the engine.

Would be more than happy to hear from you

This is an incorrect function declaration:

    class SoundData
    {
    public:
        virtual bool init(const std::string& filename);
        virtual bool init(const std::vector<uint8_t>& newData);
    };

    class SoundDataWave: public SoundData
    {
    public:
        virtual bool init(const std::vector<uint8_t>& newData) override;
    };

Because some compilers accept std::string for std::vector<uint8_t>. As a result, "virtual bool init (const std::string& filename);" not visible in the classes of the heirs. I suggest changing the name of the function "virtual bool init(const std::vector<uint8_t>& newData);" on "virtual bool initData(const std::vector <uint8_t>& newData);".

For example:

string path = "24-bit.wav";

    // compile error:
SoundDataWave* pSoundDataWave = new SoundDataWave();
pSoundDataWave->init( path );

    // compile ok:
SoundData* pSoundDataWave = new SoundDataWave();
pSoundDataWave->init( path );

When building in Visual Studio 2017 (Windows) , i get Error Code : C2059 -- Syntax Error : "Constant" .
in line : 109 , in file : audiodevicexa2.cpp
const UINT XAUDIO2_DEBUG_ENGINE = 0x0001;

Hi, I was just inspecting the engine, great work!
Just a tiny question, why haven't you included a built in script support (a VM) inside the engine for languages like Lua or Python?

Would love to hear your thoughts about this feature possibility in the engine.

Keep up the great job,
Ron

is there any script for create new project?

Visual Studio 2017, Windows 10 SDK 10.0.18362.0
    msvcp140.dll!00007ff9c96b2e70()	Unknown

[Inline Frame] samples.exe!std::_Mtx_lockX(_Mtx_internal_imp_t *) Line 72 C++
[Inline Frame] samples.exe!std::_Mutex_base::lock() Line 49 C++
[Inline Frame] samples.exe!std::unique_lockstd::mutex::{ctor}(std::mutex &) Line 150 C++
samples.exe!ouzel::graphics::Graphics::handleEvent(const ouzel::graphics::RenderDevice::Event & event) Line 161 C++
[Inline Frame] samples.exe!std::_Func_class<void,ouzel::graphics::RenderDevice::Event const &>::operator()(const ouzel::graphics::RenderDevice::Event &) Line 43 C++
samples.exe!ouzel::graphics::RenderDevice::process() Line 45 C++
samples.exe!ouzel::graphics::d3d11::RenderDevice::process() Line 322 C++
samples.exe!ouzel::graphics::d3d11::RenderDevice::renderMain() Line 1114 C++
[External Code]

Code: master latest, sample project.
Hardware: Macbook pro 15inch 2018
Renderer: Opengl

Was just inspecting the GUI sample and noticed that the SetCursorPosition is not working properly in Windows environment :

engine->getInputManager()->setCursorPosition(Vector2(10, 10));

I though it is because I have two monitors, at first, but that doesn't seem to work either.
Do you encounter this issue as well?

hi, i am trying to export lua binding with ouzel, using https://github.com/satoren/kaguya library.
and i have big step, 80% completed.
but there is problem i can't solve, becouse kaguya can't recognized member function and static member function when they have same name.
for example, Vector2::add and static Vector2::add
so i came to get your help. if you can change the static api name or some other way to solve this problem.

thanks for your attention.

Any plans to add WASAPI for Audio?
I'm adding it into my game engine (https://github.com/amerkoleci/alimer).
I saw also you are reading entire file for audio stream, while instead you should stream chunk of audio file during audio streaming.

This function don't catch LeftAlt, RightAlt and LeftGUI (VK_LWIN) keys:

void handleKeyEvent(UINT msg, WPARAM wParam, LPARAM lParam);

For LeftGUI (VK_LWIN) key need append:

	case VK_LWIN:
		if ((lParam & 0x1000000) == 0)
			vKey = VK_LWIN;
		else
			vKey = VK_RWIN;
		break;

For LeftAlt, RightAlt keys need append:

case WM_SYSKEYDOWN:
case WM_SYSKEYUP:
case WM_KEYDOWN:
case WM_KEYUP:
    {
        handleKeyEvent(msg, wParam, lParam);
        break;
    }

Im getting this error while compiling the examples
according to this : https://msdn.microsoft.com/en-us/library/windows/desktop/hh405051(v=vs.85).aspx
XINPUT1_4.dll ships only windows 8

Hi again
Please check my suggestion about having a friendly colorname.
I'm new to c++ and don't follow any convention/protocol so feel 100% free to adapt as you know best if you like this.
This was inspired by C# and MagikCore and overload of Color creation to add just the colorname instead of RGBA.

ColorInfo » Colornames to RGBA (outside Color to reduce memory footprint)
Color » overload to allow an easy Color("black"), Add a cache if too much called and an Exception if the color doesn't exist.

Thanks
Ricardo

ouzel.graphics.ColorInfo.zip
samples.zip