From 6e2350a872850b2e966db4935a935f6dcd724434 Mon Sep 17 00:00:00 2001
From: zongor <admin@alfrescocavern.com>
Date: Mon, 27 May 2024 18:12:34 -0400
Subject: [PATCH] move to tools, add transpiler

---
 client/main.c                                 |   1 -
 .../test/schema.json                          | 165 ++++++++++++++++
 .../js-class-c-struct-transpiler/transpile.js | 181 ++++++++++++++++++
 .../test-js-c-interop}/build.sh               |   0
 .../test-js-c-interop}/index.html             |   0
 .../test-js-c-interop}/index.js               |   0
 .../test-js-c-interop}/index.wasm             | Bin
 .../test-js-c-interop}/test.c                 |   0
 .../test-js-c-interop}/test.js                |   0
 9 files changed, 346 insertions(+), 1 deletion(-)
 create mode 100644 tools/js-class-c-struct-transpiler/test/schema.json
 create mode 100644 tools/js-class-c-struct-transpiler/transpile.js
 rename {test-js-c-interop => tools/test-js-c-interop}/build.sh (100%)
 rename {test-js-c-interop => tools/test-js-c-interop}/index.html (100%)
 rename {test-js-c-interop => tools/test-js-c-interop}/index.js (100%)
 rename {test-js-c-interop => tools/test-js-c-interop}/index.wasm (100%)
 rename {test-js-c-interop => tools/test-js-c-interop}/test.c (100%)
 rename {test-js-c-interop => tools/test-js-c-interop}/test.js (100%)

diff --git a/client/main.c b/client/main.c
index e36b509..e5ffeac 100644
--- a/client/main.c
+++ b/client/main.c
@@ -1,5 +1,4 @@
 #include "raylib.h"
-#include "rcamera.h"
 #include <emscripten/emscripten.h>
 #include <emscripten/websocket.h>
 #include <stdio.h>
diff --git a/tools/js-class-c-struct-transpiler/test/schema.json b/tools/js-class-c-struct-transpiler/test/schema.json
new file mode 100644
index 0000000..5a59822
--- /dev/null
+++ b/tools/js-class-c-struct-transpiler/test/schema.json
@@ -0,0 +1,165 @@
+{
+  "Vector3": {
+    "x": {
+      "type": "f32",
+      "kind": "scalar"
+    },
+    "y": {
+      "type": "f32",
+      "kind": "scalar"
+    },
+    "z": {
+      "type": "f32",
+      "kind": "scalar"
+    }
+  },
+  "Entity": {
+    "Name": {
+      "type": "string",
+      "kind": "string",
+      "size": "24"
+    },
+    "Strength": {
+      "type": "i32",
+      "kind": "scalar"
+    },
+    "Endurance": {
+      "type": "i32",
+      "kind": "scalar"
+    },
+    "Intelligence": {
+      "type": "i32",
+      "kind": "scalar"
+    },
+    "Wisdom": {
+      "type": "i32",
+      "kind": "scalar"
+    },
+    "Charisma": {
+      "type": "i32",
+      "kind": "scalar"
+    },
+    "Faith": {
+      "type": "i32",
+      "kind": "scalar"
+    },
+    "Artisan": {
+      "type": "i32",
+      "kind": "scalar"
+    },
+    "Metalworking": {
+      "type": "i32",
+      "kind": "scalar"
+    },
+    "Alchemy": {
+      "type": "i32",
+      "kind": "scalar"
+    },
+    "Engineering": {
+      "type": "i32",
+      "kind": "scalar"
+    },
+    "Culinary": {
+      "type": "i32",
+      "kind": "scalar"
+    },
+    "Ranged": {
+      "type": "i32",
+      "kind": "scalar"
+    },
+    "Melee": {
+      "type": "i32",
+      "kind": "scalar"
+    },
+    "Acrobatics": {
+      "type": "i32",
+      "kind": "scalar"
+    },
+    "Prestidigitation": {
+      "type": "i32",
+      "kind": "scalar"
+    },
+    "Language": {
+      "type": "i32",
+      "kind": "scalar"
+    },
+    "Medicine": {
+      "type": "i32",
+      "kind": "scalar"
+    },
+    "Thaumitology": {
+      "type": "i32",
+      "kind": "scalar"
+    },
+    "Theology": {
+      "type": "i32",
+      "kind": "scalar"
+    },
+    "Fishing": {
+      "type": "i32",
+      "kind": "scalar"
+    },
+    "Mining": {
+      "type": "i32",
+      "kind": "scalar"
+    },
+    "Survival": {
+      "type": "i32",
+      "kind": "scalar"
+    },
+    "Gardening": {
+      "type": "i32",
+      "kind": "scalar"
+    },
+    "History": {
+      "type": "i32",
+      "kind": "scalar"
+    },
+    "Perception": {
+      "type": "i32",
+      "kind": "scalar"
+    },
+    "Luck": {
+      "type": "i32",
+      "kind": "scalar"
+    },
+    "Stealth": {
+      "type": "i32",
+      "kind": "scalar"
+    },
+    "Attractiveness": {
+      "type": "i32",
+      "kind": "scalar"
+    },
+    "Affluence": {
+      "type": "i32",
+      "kind": "scalar"
+    },
+    "Notoriety": {
+      "type": "i32",
+      "kind": "scalar"
+    }
+  },
+  "Camera3D": {
+    "position": {
+      "type": "Vector3",
+      "kind": "struct"
+    },
+    "target": {
+      "type": "Vector3",
+      "kind": "struct"
+    },
+    "up": {
+      "type": "Vector3",
+      "kind": "struct"
+    },
+    "fovy": {
+      "type": "f32",
+      "kind": "scalar"
+    },
+    "projection": {
+      "type": "f32",
+      "kind": "scalar"
+    }
+  }
+}
diff --git a/tools/js-class-c-struct-transpiler/transpile.js b/tools/js-class-c-struct-transpiler/transpile.js
new file mode 100644
index 0000000..e10ce86
--- /dev/null
+++ b/tools/js-class-c-struct-transpiler/transpile.js
@@ -0,0 +1,181 @@
+import { parseArgs } from "util";
+
+let types = {
+  u8: {
+    c: "uint8_t",
+    js: "Uint8",
+    size: 1,
+  },
+  i8: {
+    c: "int8_t",
+    js: "Int8",
+    size: 1,
+  },
+  u16: {
+    c: "uint16_t",
+    js: "Uint16",
+    size: 2,
+  },
+  i16: {
+    c: "int16_t",
+    js: "Int16",
+    size: 2,
+  },
+  u32: {
+    c: "uint32_t",
+    js: "Uint32",
+    size: 4,
+  },
+  i32: {
+    c: "int32_t",
+    js: "Int32",
+    size: 4,
+  },
+  f32: {
+    c: "float",
+    js: "Float32",
+    size: 4,
+  },
+  f64: {
+    c: "double",
+    js: "Float64",
+    size: 8,
+  },
+};
+
+const { values } = parseArgs({
+  args: Bun.argv,
+  options: {
+    schema: {
+      type: "string",
+      short: "S",
+    },
+    out: {
+        type: "string",
+        short: "o"
+    }
+  },
+  strict: true,
+  allowPositionals: true,
+});
+
+function jsStructConstructor(size, containsString) {
+  return `
+    get bytes() {
+        return new Uint8Array(this._ptr);
+    }
+
+    constructor(init = {}, ptr = undefined) {
+      this._size = ${size};
+      this._ptr = ptr.buffer || new ArrayBuffer(this._size);
+      this._data = new DataView(this._ptr);
+      ${
+        containsString
+          ? `
+      this._encoder = new TextEncoder(); 
+      this._decoder = new TextDecoder();`
+          : ""
+      }          
+      for (const key of Object.keys(init)) {
+        this[key] = init[key];
+      }
+    }`;
+}
+
+const sFile = Bun.file(values.schema);
+const schema = await sFile.json();
+let cData = "";
+
+for (const type of Object.keys(schema)) {
+  let containsString = false;
+  let offset = 0;
+  let size = 0;
+  let jsData = "";
+  const props = schema[type];
+  cData += `typedef struct ${type} {`;
+  jsData += `class ${type} {`;
+  for (const prop of Object.keys(props)) {
+    const propType = props[prop].type;
+    const kind = props[prop].kind;
+    let typeSize = parseInt(types[propType]?.size);
+
+    switch (kind) {
+      case "string":
+        containsString = true;
+        typeSize = props[prop].size;
+        const iSize = parseInt(offset) + parseInt(typeSize);
+        jsData += `
+    get ${prop}() {
+        return this._decoder.decode(new Uint8Array(this._ptr.slice(${parseInt(
+          offset
+        )}, ${iSize})));
+    }
+    set ${prop}(v) {
+        this._data.set(this._encoder.encode(v), ${parseInt(offset)});
+    }
+    `;
+
+        cData += `
+    char ${prop}[${iSize}];`;
+        break;
+      case "scalar":
+        typeSize = types[propType].size;
+        jsData += `
+    get ${prop}() {
+        return this._data.get${types[propType].js}(${parseInt(offset)}, true);
+    }
+    set ${prop}(v) {
+        return this._data.set${types[propType].js}(${parseInt(
+          offset
+        )}, v, true);
+    }
+    `;
+
+        cData += `
+    ${types[propType].c} ${prop};`;
+
+        break;
+      case "struct":
+        const jsSize = parseInt(offset) + parseInt(types[propType].size);
+        jsData += `
+    get ${prop}() {
+        return new ${propType}({}, new Uint8Array(this._ptr.slice(${offset}, ${jsSize})));
+    }
+    set ${prop}(v) {
+        this._data.set(v.bytes(), ${offset});
+    }
+    `;
+
+        cData += `
+    ${types[propType].c} ${prop};`;
+        break;
+      case "array":
+        break;
+      default:
+        break;
+    }
+
+    size += parseInt(typeSize);
+    offset += parseInt(typeSize);
+  }
+
+  /**
+   * add the new type to the list so we can use it for structs later.
+   */
+  types[type] = {
+    c: type,
+    js: type,
+    size: parseInt(size),
+  };
+
+  jsData += jsStructConstructor(size, containsString);
+  jsData += `
+}`;
+  cData += `
+} ${type};
+
+`;
+
+  await Bun.write(Bun.file(values.out + type + ".js"), jsData);
+}
+await Bun.write(Bun.file(values.out + "types.h"), cData);
diff --git a/test-js-c-interop/build.sh b/tools/test-js-c-interop/build.sh
similarity index 100%
rename from test-js-c-interop/build.sh
rename to tools/test-js-c-interop/build.sh
diff --git a/test-js-c-interop/index.html b/tools/test-js-c-interop/index.html
similarity index 100%
rename from test-js-c-interop/index.html
rename to tools/test-js-c-interop/index.html
diff --git a/test-js-c-interop/index.js b/tools/test-js-c-interop/index.js
similarity index 100%
rename from test-js-c-interop/index.js
rename to tools/test-js-c-interop/index.js
diff --git a/test-js-c-interop/index.wasm b/tools/test-js-c-interop/index.wasm
similarity index 100%
rename from test-js-c-interop/index.wasm
rename to tools/test-js-c-interop/index.wasm
diff --git a/test-js-c-interop/test.c b/tools/test-js-c-interop/test.c
similarity index 100%
rename from test-js-c-interop/test.c
rename to tools/test-js-c-interop/test.c
diff --git a/test-js-c-interop/test.js b/tools/test-js-c-interop/test.js
similarity index 100%
rename from test-js-c-interop/test.js
rename to tools/test-js-c-interop/test.js