Starting to support OSX

src/dawnosx/CMakeLists.txt

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+# Copyright (c) 2022 Dominic Masters
+# 
+# This software is released under the MIT License.
+# https://opensource.org/licenses/MIT
+
+# Libraries
+# target_link_libraries(${DAWN_TARGET_NAME}
+#   PUBLIC
+#     m
+# )
+
+# Includes
+target_include_directories(${DAWN_TARGET_NAME}
+  PUBLIC
+    ${CMAKE_CURRENT_LIST_DIR}
+)
+
+# Platform variables
+target_compile_definitions(${DAWN_TARGET_NAME}
+  PUBLIC
+    DAWN_ASSET_BUILD_PREFIX="../../assets/"
+)
+
+# Subdirs
+add_subdirectory(host)

src/dawnosx/host/CMakeLists.txt

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+# Copyright (c) 2022 Dominic Masters
+# 
+# This software is released under the MIT License.
+# https://opensource.org/licenses/MIT
+
+# Sources
+target_sources(${DAWN_TARGET_NAME}
+  PRIVATE
+    DawnHostOSX.cpp
+)

src/dawnosx/host/DawnHostOSX.cpp

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+// Copyright (c) 2022 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#include "DawnHostOSX.hpp"
+
+#if DAWN_DEBUG_BUILD
+  uint64_t dawnAllocatedItemCount;
+#endif
+
+using namespace Dawn;
+
+int32_t main(int32_t argc, char **args) {
+  int32_t result;
+
+  #if DAWN_DEBUG_BUILD
+    dawnAllocatedItemCount = 0;
+  #endif
+
+  // Create the host
+  auto host = new DawnHost();
+  auto game = new DawnGame(host);
+
+  // Initialize the host and error check
+  result = host->init(game);
+  switch(result) {
+    case DAWN_HOST_INIT_RESULT_SUCCESS:
+      break;
+    default:
+      return result;
+  }
+
+  // Request the main loop to start running.
+  result = host->start(game);
+  switch(result) {
+    case DAWN_HOST_START_RESULT_SUCCESS:
+      break;
+    case DAWN_HOST_START_RESULT_EXIT_SUCCESS:
+      break;
+    default:
+      return result;
+  }
+
+  // Main loop finished without errors, cleanup
+  host->unload(game);
+
+  delete game;
+  delete host;
+
+  #if DAWN_DEBUG_BUILD
+    assertTrue(dawnAllocatedItemCount == 0);
+  #endif
+
+  // Success
+  return 0;
+}

src/dawnosx/host/DawnHostOSX.hpp

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+// Copyright (c) 2022 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#pragma once
+#include "dawnlibs.hpp"
+#include "host/DawnHost.hpp"
+#include "game/DawnGame.hpp"
+
+/**
+ * Main entry function received by parent Win32 Operating System.
+ * 
+ * @param argc Count of arguments passed to the program.
+ * @param args Array of strings provided to the program.
+ * @return 0 for success, else for any issue/error.
+ */
+int32_t main(int32_t argc, char **args);