Init commit skeleton project

Template based on existing project.

.gitignore

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+/build*/
+/compile_commands.json
+/.cache/

CMakeLists.txt

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+project(LD52Native)
+cmake_minimum_required(VERSION 3.18.4)
+
+set(CMAKE_C_FLAGS "-Wall -Wextra -Wpedantic")
+set(CMAKE_C_FLAGS_DEBUG "-O0 -g")
+set(CMAKE_C_FLAGS_RELEASE "-O3 -D NDEBUG")
+set(CMAKE_CXX_FLAGS "-Wall -Wextra -Wpedantic")
+set(CMAKE_CXX_FLAGS_DEBUG "-O0 -g")
+set(CMAKE_CXX_FLAGS_RELEASE "-O3 -D NDEBUG")
+
+if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
+    message(STATUS "Setting build type to 'Debug', none was specified.")
+    set(CMAKE_BUILD_TYPE Debug CACHE STRING "Choose the type of build." FORCE)
+    set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS "Debug" "Release")
+endif()
+
+set(LD52Native_SOURCES
+    src/main.cc
+    src/game.cc
+    src/ems.cc
+)
+
+add_executable(LD52Native ${LD52Native_SOURCES})
+
+target_link_libraries(LD52Native PUBLIC
+    raylib
+)

emsdk_version

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+3.1.28

src/.lvimrc

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+set tabstop=2
+set softtabstop=2
+set shiftwidth=2

src/constants.h

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+#ifndef LD52_HARVEST_FOOD_CUTS_CONSTANTS_H_
+#define LD52_HARVEST_FOOD_CUTS_CONSTANTS_H_
+
+constexpr int DEFAULT_SCREEN_WIDTH = 500;
+constexpr int DEFAULT_SCREEN_HEIGHT = 800;
+
+#endif

src/ems.cc

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+#include "ems.h"
+
+#ifdef __EMSCRIPTEN__
+#include <emscripten.h>
+#include <emscripten/html5.h>
+
+EM_JS(int, canvas_get_width, (),
+      { return document.getElementById("canvas").clientWidth; });
+
+EM_JS(int, canvas_get_height, (),
+      { return document.getElementById("canvas").clientHeight; });
+#else
+#include <iostream>
+#endif
+
+int call_js_get_canvas_width() {
+
+#ifdef __EMSCRIPTEN__
+  return canvas_get_width();
+#else
+  return 800;
+#endif
+}
+
+int call_js_get_canvas_height() {
+#ifdef __EMSCRIPTEN__
+  return canvas_get_height();
+#else
+  return 500;
+#endif
+}

src/ems.h

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+#ifndef LD52_HARVEST_FOOD_CUTS_EMSCRIPTEN_H_
+#define LD52_HARVEST_FOOD_CUTS_EMSCRIPTEN_H_
+
+extern int call_js_get_canvas_width();
+extern int call_js_get_canvas_height();
+
+#endif

src/game.cc

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+#include "game.h"
+
+// third party includes
+#include <raylib.h>
+
+Game::Game() {}
+
+void Game::do_update() {
+  update_impl();
+  draw_impl();
+}
+
+void Game::update_impl() {}
+
+void Game::draw_impl() {
+  BeginDrawing();
+  ClearBackground(BLACK);
+  DrawText("Testing...", 100, 100, 30, RAYWHITE);
+  EndDrawing();
+}

src/game.h

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+#ifndef LD52_HARVEST_FOOD_CUTS_GAME_H_
+#define LD52_HARVEST_FOOD_CUTS_GAME_H_
+
+class Game {
+public:
+  Game();
+
+  void do_update();
+
+private:
+
+  void update_impl();
+  void draw_impl();
+
+};
+
+#endif

src/main.cc

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+// emscripten includes
+#ifdef __EMSCRIPTEN__
+#include <emscripten.h>
+#include <emscripten/html5.h>
+
+#include "ems.h"
+#else
+#include <random>
+#endif
+
+// third party includes
+#include <raylib.h>
+
+// local includes
+#include "constants.h"
+#include "game.h"
+
+#ifdef __EMSCRIPTEN__
+static void *global_game_ptr = nullptr;
+
+EM_BOOL resize_event_callback(int event_type, const EmscriptenUiEvent *event,
+                              void *ud) {
+  if (event_type == EMSCRIPTEN_EVENT_RESIZE) {
+    SetWindowSize(call_js_get_canvas_width(), call_js_get_canvas_height());
+  }
+  return false;
+}
+#endif
+
+void game_update(void *game_ptr) { ((Game *)game_ptr)->do_update(); }
+
+int main() {
+#ifdef __EMSCRIPTEN__
+  InitWindow(DEFAULT_SCREEN_WIDTH, DEFAULT_SCREEN_HEIGHT, "LD52_Harvest_Food_Cuts");
+#else
+  InitWindow(DEFAULT_SCREEN_WIDTH, DEFAULT_SCREEN_HEIGHT,
+             "LD52_Harvest_Food_Cuts_Native");
+#endif
+
+  Game game{};
+
+#ifdef __EMSCRIPTEN__
+  global_game_ptr = &game;
+
+  SetWindowSize(call_js_get_canvas_width(), call_js_get_canvas_height());
+
+  emscripten_set_resize_callback(EMSCRIPTEN_EVENT_TARGET_WINDOW, nullptr, false,
+                                 resize_event_callback);
+
+  emscripten_set_main_loop_arg(game_update, &game, 0, 1);
+#else
+  SetTargetFPS(60);
+
+  while (!WindowShouldClose()) {
+    game_update(&game);
+  }
+
+  CloseAudioDevice();
+  CloseWindow();
+#endif
+
+  return 0;
+}

wasm_build/.gitignore

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+/ld52_harvest_cut.html
+/ld52_harvest_cut.js
+/ld52_harvest_cut.wasm
+/ld52_harvest_cut.data
+/index.html

wasm_build/Makefile

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+ifdef RELEASE
+	OTHER_FLAGS = -DNDEBUG -O3
+else
+	OTHER_FLAGS = -O0
+endif
+
+SOURCES = \
+		../src/main.cc \
+		../src/ems.cc \
+		../src/game.cc
+
+HEADERS = \
+		../src/constants.h
+
+CXX = source ${HOME}/git/emsdk/emsdk_env.sh && em++
+
+all: | format ld52_harvest_cut.html index.html
+
+ld52_harvest_cut.html: ${SOURCES} ${HEADERS}
+	${CXX} -o ld52_harvest_cut.html \
+		-s USE_GLFW=3 -I../wasm_includes -L../wasm_libs -lraylib \
+		--shell-file custom_shell.html \
+		-sEXPORTED_FUNCTIONS=_main \
+		-sEXPORTED_RUNTIME_METHODS=ccall \
+		${OTHER_FLAGS} \
+		${SOURCES}
+
+.PHONY: clean format index.html
+
+index.html:
+	ln -sf ld52_harvest_cut.html index.html
+
+clean:
+	rm -f ld52_harvest_cut.html
+	rm -f ld52_harvest_cut.js
+	rm -f ld52_harvest_cut.wasm
+	rm -f ld52_harvest_cut.data
+	rm -f index.html
+
+format:
+	clang-format -i --style=file ${SOURCES} ${HEADERS}

wasm_build/custom_shell.html

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+<!doctype html>
+<html lang="en-us">
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no"/>
+    <title>Food Cuts</title>
+    <style>
+        body { margin: 0; background-color: black }
+        .emscripten {
+            position: absolute;
+            top: 0px;
+            left: 0px;
+            margin: 0px;
+            border: 0;
+            width: 100%;
+            height: 100%;
+            overflow: hidden;
+            display: block;
+            image-rendering: optimizeSpeed;
+            image-rendering: -moz-crisp-edges;
+            image-rendering: -o-crisp-edges;
+            image-rendering: -webkit-optimize-contrast;
+            image-rendering: optimize-contrast;
+            image-rendering: crisp-edges;
+            image-rendering: pixelated;
+            -ms-interpolation-mode: nearest-neighbor;
+        }
+    </style>
+  </head>
+  <body>
+    <canvas class="emscripten" id="canvas" oncontextmenu="event.preventDefault()"></canvas>
+    <script type='text/javascript'>
+      var Module = {
+        preRun: [],
+        postRun: [],
+        print: (function() {
+            return function(text) {
+                text = Array.prototype.slice.call(arguments).join(' ');
+                console.log(text);
+            };
+        })(),
+        printErr: function(text) {
+            text = Array.prototype.slice.call(arguments).join(' ');
+            console.error(text);
+        },
+        canvas: (function() {
+            var canvas = document.getElementById('canvas');
+            //canvas.addEventListener("webglcontextlost", function(e) { alert('FIXME: WebGL context lost, please reload the page'); e.preventDefault(); }, false);
+            return canvas;
+        })(),
+        setStatus: function(text) {
+            console.log("status: " + text);
+        },
+        monitorRunDependencies: function(left) {
+            // no run dependencies to log
+        }
+      };
+      window.onerror = function() {
+        console.log("onerror: " + event);
+      };
+    </script>
+    {{{ SCRIPT }}}
+  </body>
+</html>