diff --git a/examples/tetris/.gitignore b/examples/tetris/.gitignore
new file mode 100644
index 0000000000..6838c98f1d
--- /dev/null
+++ b/examples/tetris/.gitignore
@@ -0,0 +1,3 @@
+tetris
+tetris.wasm
+main
diff --git a/examples/tetris/README.md b/examples/tetris/README.md
index bc3c796bad..06fcba5e96 100644
--- a/examples/tetris/README.md
+++ b/examples/tetris/README.md
@@ -14,4 +14,36 @@ sudo apt install libgl-dev
v -b js_browser examples/tetris/tetris.js.v
```
-And then open `index.html` with your favourite web browser.
\ No newline at end of file
+And then open `index.html` with your favourite web browser.
+
+
+## Compiling to WASM
+
+1. Install Emscripten from https://emscripten.org/docs/getting_started/downloads.html
+
+2. Make sure that the environment in your shell is setup correctly,
+i.e. that `emcc --version` works.
+```sh
+. /opt/emsdk/emsdk_env.sh
+emcc --version
+```
+
+3. Compile the game to WASM:
+```sh
+v -skip-unused -prod -os wasm32_emscripten examples/tetris/`
+```
+
+4. Copy the generated `tetris` file to `index.js`
+This can be done once. Note that this step will be removed soon, when
+the option `-os wasm32_emscripten` becomes better integrated:
+```sh
+cp examples/tetris/tetris examples/tetris/tetris.js
+```
+
+5. Run/test the game:
+```sh
+emrun examples/tetris/index.html
+```
+
+Once you have run the game, you can make changes,
+then just recompile (step 3), and refresh the game in your browser.
diff --git a/examples/tetris/index.html b/examples/tetris/index.html
index b3880194c1..595b8ca6e8 100644
--- a/examples/tetris/index.html
+++ b/examples/tetris/index.html
@@ -1,4 +1,17 @@
+
+
+
+
+
+
+
+ V Tetris
+
-
\ No newline at end of file
+
+
+
diff --git a/vlib/gg/gg.c.v b/vlib/gg/gg.c.v
index d865504e66..73d42b3aed 100644
--- a/vlib/gg/gg.c.v
+++ b/vlib/gg/gg.c.v
@@ -16,6 +16,8 @@ $if windows {
#include "windows.h"
}
+#flag wasm32_emscripten --embed-file @VEXEROOT/examples/assets/fonts/RobotoMono-Regular.ttf@/assets/fonts/RobotoMono-Regular.ttf
+
// call Windows API to get screen size
fn C.GetSystemMetrics(int) int
@@ -58,6 +60,7 @@ pub:
create_window bool
// window_user_ptr voidptr
window_title string
+ html5_canvas_name string = 'canvas'
borderless_window bool
always_on_top bool
bg_color gx.Color
@@ -465,7 +468,7 @@ pub fn new_context(cfg Config) &Context {
fail_userdata_cb: gg_fail_fn
cleanup_userdata_cb: gg_cleanup_fn
window_title: &char(cfg.window_title.str)
- html5_canvas_name: &char(cfg.window_title.str)
+ html5_canvas_name: &char(cfg.html5_canvas_name.str)
width: cfg.width
height: cfg.height
sample_count: cfg.sample_count