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Author SHA1 Message Date
Martin Fouilleul 82e4d0e08b Moving repo to github 2023-10-09 17:23:54 +02:00
Martin Fouilleul ef79405805 Licensing changes 2023-10-08 18:29:58 +02:00
Martin Fouilleul a1b48b2b2f add github sponsor yml file 2023-10-08 18:27:43 +02:00
Ilia Demianenko 5e62a5d2e7 Make intensity FPS-independent 2023-10-03 21:31:22 -07:00
Ilia Demianenko c05223f91c Make the fluid sample do a splat on startup 2023-10-03 21:19:36 -07:00
Reuben Dunnington 6e4943c2fa
make scancode -> keycode conversion consistent with header definitions 2023-09-29 22:09:31 -04:00
5 changed files with 250 additions and 828 deletions
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Orca
Orca
Copyright (C) 2023 Martin Fouilleul and the Orca project contributors
Copyright (C) 2023 Martin Fouilleul
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation version 3, with additional
terms under section 7 of the GNU Affero General Public License version
3, as published at the end of this document.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
Orca is distributed under the MIT license or the Apache License version 2.0,
at your option.
-------------------------------------------------------------------------------
AGPLv3 LICENSE
MIT License
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
-------------------------------------------------------------------------------
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17. Interpretation of Sections 15 and 16.
If the disclaimer of warranty and limitation of liability provided
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END OF TERMS AND CONDITIONS
--------------------------------------------------------------------------------
ADDITIONAL TERMS
--------------------------------------------------------------------------------
1. Pursuant to section 7(b) of the AGPLv3, we require the preservation of the legal
notices, copyright notices and author attributions in the program and in its
documentation and in the Appropriate Legal Notices displayed by works containing
it.
2. Pursuant to Section 7(c) of the AGPLv3, we require that modified versions of the
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Any modified material being redistributed must include a prominent and conveniently
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The string VERSION_NUMBER should be replaced with the exact version number of
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As an additional permission, WebAssembly modules including unmodified portions of
the Program to the sole purpose of being bundled with and run by an unmodified version
of the Program can be distributed under the terms of their author's choice, without being
bound by the requirements of this license. This permission does not extend to modifications
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TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
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END OF TERMS AND CONDITIONS

146
Readme.md
View File

@ -1,146 +1,2 @@
------
**DISCLAIMER: This project is very much a Work In Progress. We are making it accessible in this very early state so that participants in the [2023 Wheel Reinvention Jam](https://handmade.network/jam/2023) can try it out and possibly use it as their jamming platform. Expect bugs, missing and/or incomplete features, unstable APIs, and sparse documentation. Some current issues might be a show stopper for you, so make sure you can build and run the sample apps before jumping in.**
**This repository is not used anymore. Development of Orca was moved here: [https://github.com/orca-app/orca](https://github.com/orca-app/orca)**
**If you do choose to try out Orca anyway, thank you! We'll do our best to answer your questions, and we'd really appreciate your feedback!**
------
# Orca
![Example Orca apps](doc/images/orca-apps-lg.webp)
Orca is a development platform and runtime environment for cross-platform, sandboxed graphical WebAssembly applications. In this early MVP you can:
- Receive mouse and keyboard input.
- Draw paths, images and text using a 2D vector graphics API.
- Draw 2D/3D graphics using OpenGL ES 3.1 (minus a few features)
- Build user interfaces using our UI API and default widgets.
- Read and write files using a capability-based API.
To learn more about the project and its goals, read the [announcement post](https://orca-app.dev/posts/230607/orca_announcement.html).
## Installing
The Orca command-line tools must be installed to your system in order to use them in your own projects.
**At this early stage, you must build Orca yourself - in the future, there will be fewer dependencies and this installation process will be streamlined.**
### Requirements
- Windows or Mac (Linux is not yet supported)
- [Python 3.8](https://www.python.org/) or newer (for command line tools)
- Clang (version 11.0 or newer)
- **Windows users:** `clang` can be installed via the Visual Studio installer. Search for "C++ Clang Compiler".
- **Mac users:** Apple's built-in `clang` does not support WebAssembly. We recommend installing `clang` via [Homebrew](https://brew.sh/) with `brew install llvm`.
- MSVC (Visual Studio 2022 17.5 or newer) (Windows only)
- This can be installed through the [Visual Studio Community](https://visualstudio.microsoft.com/) installer. Ensure that your Visual Studio installation includes "Desktop development with C++".
- Please note the version requirement! Orca requires C11 atomics, which were only added to MSVC in late 2022.
- Xcode command-line tools (Mac only)
- These can be installed with `xcode-select --install`.
### Installation instructions
**Windows users:** You must perform all the following actions from a 64-bit Visual Studio command prompt. We recommend searching for "x64 Native Tools Command Prompt".
Clone the repo, then `cd` into the `orca` directory:
```
git clone https://git.handmade.network/hmn/orca.git
cd orca
```
Build the Orca runtime:
```
python orca dev build-runtime
```
Install the Orca dev tools. If on Windows, the tool can automatically add `orca` to your PATH. Otherwise, you must manually add the Orca install directory to your PATH, e.g. by updating `.zshrc` or `.bashrc`.
```
python orca dev install
```
Finally, verify that Orca is successfully installed by running the `orca version` command. Note the lack of `./`!
```
orca version
```
If you encounter any errors, see the FAQ below.
Once the `orca` tools are installed and on your PATH, you can use them from anywhere.
### Building the sample Orca apps
The `samples` directory contains several sample apps that demonstrate various Orca features. To build one, `cd` to a sample project's directory and run its build script. For example, for the `breakout` sample:
```
cd samples/breakout
# Windows
build.bat
# Mac
./build.sh
```
On Windows this creates a `Breakout` directory in `samples/breakout`. You can launch the app by running `Breakout/bin/Breakout.exe`. On macOS this creates a `Breakout.app` bundle in `samples/breakout` that you can double-click to run.
## Writing an Orca app
Orca apps are WebAssembly modules that use the Orca APIs. The process for creating an Orca application is:
1. Compile a WebAssembly module using your language and toolchain of choice.
2. Bundle the WebAssembly module into a native executable using the Orca command-line tools.
For a more thorough overview, please read the [Quick Start Guide](./doc/QuickStart.md), which will walk you through building a simple application.
The following additional resources may also help you familiarize yourself with Orca and its APIs:
- The [samples folder](./samples) contains sample applications that show various aspects of the Orca API and core library:
- [`breakout`](./samples/breakout) is a small breakout game making use of the vector graphics API.
- [`clock`](./samples/clock) is a simple clock showcasing vector graphics and the time API.
- [`triangle`](./samples/triangle) shows how to draw a spinning triangle using the GLES API.
- [`fluid`](./samples/fluid) is a fluid simulation using a more complex GLES setup.
- [`ui`](./samples/ui) showcases the UI API and Orca's default UI widgets.
- The [API Cheatsheets](./doc/cheatsheets) provide a list of Orca API functions, grouped by topic.
## FAQ
**What platforms does Orca support?**
We currently support Windows 10 and up, and macOS 10.15 and up. We plan to expand to more platforms in the future.
**What languages can I use with Orca?**
In principle, you can use any language and toolchain that can produce a WebAssembly module and bind to the Orca APIs. However, several important parts of Orca, such as the UI, are provided as part of the core library, which must be compiled to WebAssembly with your app, and is written in C. Therefore, at this early stage, it may be difficult to use any language other than C.
C-style C++ is possible but requires compiling the core library in C as a separate object file, and then adding that object to your compile command when building your app.
We're currently working with contributors to add support for Odin and Zig, and we look forward to expanding the number of officially-supported languages in the future.
**Which WebAssembly features does Orca support?**
We currently use [wasm3](https://github.com/wasm3/wasm3) for our interpreter. We therefore support whatever features wasm3 supports. In practice this means all WebAssembly 1.0 features, bulk memory operations, and a couple other small features.
**I am getting "unsupported OS" errors when building on Windows.**
You are likely running from the wrong kind of Visual Studio command prompt. Search for "x64 Native Tools Command Prompt" or run `vcvarsall.bat` with `x64` for the architecture.
To verify that you are in the correct type of command prompt, simply run `cl` with no arguments, and verify that you are building for x64.
**I am getting errors about atomics when building the runtime on Windows.**
Please ensure that you have the latest version of Visual Studio and MSVC installed. The Orca runtime requires the use of C11 atomics, which were not added to MSVC until late 2022.
**I am getting errors saying that `orca` is not found.**
Please ensure that you have installed Orca to your system per the installation instructions above. Please also ensure that the Orca install directory is on your PATH. The installation path is printed when running `./orca dev install`.
## License
Orca is distributed under the terms of the GNU Affero General Public License version 3, with additional terms in accordance with section 7 of AGPLv3. These additional terms ensure that:
- Modified versions of Orca must reasonably inform users that they are modified.
- You can distribute your application's WebAssembly modules under the terms of your choice, and are not required to license them under the terms of the AGPLv3.
Copyright and License details can be found in [LICENSE.txt](./LICENSE.txt)

55
samples/fluid/src/main.c
View File

@ -140,6 +140,7 @@ frame_buffer divBuffer[4];
GLuint vertexBuffer;
oc_surface surface;
f64 startTime;
//----------------------------------------------------------------
//NOTE(martin): initialization
@ -403,6 +404,7 @@ typedef struct mouse_input
} mouse_input;
mouse_input mouseInput = { 0 };
bool mouseWasDown = false;
int frameWidth = 800;
int frameHeight = 600;
@ -410,6 +412,7 @@ int frameHeight = 600;
ORCA_EXPORT void oc_on_mouse_down(int button)
{
mouseInput.down = true;
mouseWasDown = true;
}
ORCA_EXPORT void oc_on_mouse_up(int button)
@ -577,23 +580,56 @@ void multigrid_clear(frame_buffer* error)
void input_splat(float t)
{
//NOTE: apply force and dye
if(mouseInput.down && (mouseInput.deltaX || mouseInput.deltaY))
bool applySplat = false;
float x, y, deltaX, deltaY;
static f64 lastFrameTime = 0;
if (lastFrameTime == 0)
{
lastFrameTime = startTime;
}
f64 now = oc_clock_time(OC_CLOCK_MONOTONIC);
float frameDuration = now - lastFrameTime;
lastFrameTime = now;
if (mouseInput.down && (mouseInput.deltaX || mouseInput.deltaY))
{
oc_vec2 scaling = oc_surface_contents_scaling(surface);
applySplat = true;
x = mouseInput.x * scaling.x / frameWidth;
y = mouseInput.y * scaling.y / frameHeight;
deltaX = 1. / 60 / frameDuration * mouseInput.deltaX * scaling.x / frameWidth;
deltaY = 1. / 60 / frameDuration * mouseInput.deltaY * scaling.y / frameHeight;
mouseInput.deltaX = 0;
mouseInput.deltaY = 0;
}
f64 timeSinceStart = now - startTime;
if (!mouseWasDown && timeSinceStart < 1)
{
applySplat = true;
float totalDeltaX = 0.5;
x = 0.1 + totalDeltaX * timeSinceStart;
y = 0.5;
deltaX = totalDeltaX / 180;
deltaY = 0;
}
//NOTE: apply force and dye
if(applySplat)
{
// account for margin
float margin = 32;
float offset = margin / texWidth;
float ratio = 1 - 2 * margin / texWidth;
float splatPosX = (mouseInput.x * scaling.x / frameWidth) * ratio + offset;
float splatPosY = (1 - mouseInput.y * scaling.y / frameHeight) * ratio + offset;
float splatPosX = x * ratio + offset;
float splatPosY = (1 - y) * ratio + offset;
float splatVelX = (10000. * DELTA * mouseInput.deltaX * scaling.x / frameWidth) * ratio;
float splatVelY = (-10000. * DELTA * mouseInput.deltaY * scaling.y / frameWidth) * ratio;
float splatVelX = (10000. * DELTA * deltaX) * ratio;
float splatVelY = (-10000. * DELTA * deltaY) * ratio;
float intensity = 100 * sqrtf(square(ratio * mouseInput.deltaX * scaling.x / frameWidth) + square(ratio * mouseInput.deltaY * scaling.y / frameHeight));
float intensity = 100 * sqrtf(square(ratio * deltaX) + square(ratio * deltaY));
float r = intensity * (sinf(2 * M_PI * 0.1 * t) + 1);
float g = 0.5 * intensity * (cosf(2 * M_PI * 0.1 / M_E * t + 654) + 1);
@ -602,9 +638,6 @@ void input_splat(float t)
float radius = 0.005;
apply_splat(splatPosX, splatPosY, radius, splatVelX, splatVelY, r, g, b, false);
mouseInput.deltaX = 0;
mouseInput.deltaY = 0;
}
}
@ -677,6 +710,8 @@ ORCA_EXPORT void oc_on_init()
testDiv[i][j][0] = 0.5 + 0.5 * cosf(j / 100. * 3.14159 + i / 100. * 1.2139);
}
}
startTime = oc_clock_time(OC_CLOCK_MONOTONIC);
}
ORCA_EXPORT void oc_on_resize(u32 width, u32 height)

2
src/app/app.c
View File

@ -188,7 +188,7 @@ oc_key_code oc_scancode_to_keycode(oc_scan_code scanCode)
return (oc_appData.keyMap[scanCode]);
}
#define OC_DEFAULT_KEYMAP_ENTRY(sc, sv, ...) [(int) sc] = (oc_key_code)sc,
#define OC_DEFAULT_KEYMAP_ENTRY(sc, sv, kc, ...) [(int) sc] = OC_VA_NOPT(sv, ##__VA_ARGS__) __VA_ARGS__,
oc_key_code oc_defaultKeyMap[OC_SCANCODE_COUNT] = {
OC_KEY_TABLE(OC_DEFAULT_KEYMAP_ENTRY)