waphics.c - WebAssembly Graphics

A web browser based video game library for C.

Waphics allows you to easily create video games in C and export them to the web browser. Waphics provides a Javascript runtime enviroment for your C code which allows for:

• Keyboard input (mouse input to come)
• Playing sounds
• Rendering primitimes (circles, rectangles, triangles)
• Image rendering (with scaling using uv coordinates)
• Alpha blending

#define WAPHICS_IMPLEMENTATION
#include "src/waphics.c"

#define WIDTH 1000
#define HEIGHT 600

uint32_t pixels[WIDTH * HEIGHT];
Surface display;

void init(void) {
    display = SCREEN(pixels, WIDTH, HEIGHT);
}

static int x;

uint32_t *run(void) {
    //fill the display with black
    waphics_fill_display(display, RGB(0, 0, 0));
    //draw a red rectangle
    waphics_draw_rect(display, RECT(0, 0, 50, 50), RGB(255, 0, 0));
    //draw a blue circle
    waphics_draw_circle(display, CIRCLE(100, 100, 50), RGB(0, 100, 100));

    if (get_key(KEY_D)) x+=10;
    if (get_key(KEY_A)) x-=10;

    return display.pixels;
}

Examples

Triangle with mouse input.

Image loading with alpha.

Using the Library

Building from source

 1. git clone https://github.com/ScriptLineStudios/waphics.c
 2. cd waphics.c
 3. sudo make DESTDIR=/usr/bin/ install

Getting started

Waphics is simple to use. Once installed simply create a new C file and add an init and run method as follows:

#define WAPHICS_IMPLEMENTATION
#include "waphics.c"

#define WIDTH 1000
#define HEIGHT 600

uint32_t pixels[WIDTH * HEIGHT];
Surface display;

void init(void) {
    display = SCREEN(pixels, WIDTH, HEIGHT);
}

uint32_t *run(void) {
  // your code will go here...

  return display.pixels;
}

From there you are free to use waphics functionaltiy on the web! Once you are ready to compile to the web. Simpliy run:

waphics <your_file>.c <width> <height>

This will generate the following:

index.html
output.wasm
javascript.js

Simpliy run index.html using a web server of your choice, and you will be greeted by your window!

Keyboard Inputs

if get_key(KEY_A) {
  // the code here will only run when A is pressed
}