basic framework and environment OK

.gitignore

@@ -0,0 +1,2 @@
+build
+.vscode

.gitmodules

@@ -0,0 +1,6 @@
+[submodule "3rdlibs/glfw"]
+	path = 3rdlibs/glfw
+	url = https://github.com/glfw/glfw.git
+[submodule "3rdlibs/lua"]
+	path = 3rdlibs/lua
+	url = https://github.com/lua/lua.git

3rdlibs/glad/include/KHR/khrplatform.h

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+#ifndef __khrplatform_h_
+#define __khrplatform_h_
+
+/*
+** Copyright (c) 2008-2018 The Khronos Group Inc.
+**
+** Permission is hereby granted, free of charge, to any person obtaining a
+** copy of this software and/or associated documentation files (the
+** "Materials"), to deal in the Materials without restriction, including
+** without limitation the rights to use, copy, modify, merge, publish,
+** distribute, sublicense, and/or sell copies of the Materials, and to
+** permit persons to whom the Materials are furnished to do so, subject to
+** the following conditions:
+**
+** The above copyright notice and this permission notice shall be included
+** in all copies or substantial portions of the Materials.
+**
+** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
+*/
+
+/* Khronos platform-specific types and definitions.
+ *
+ * The master copy of khrplatform.h is maintained in the Khronos EGL
+ * Registry repository at https://github.com/KhronosGroup/EGL-Registry
+ * The last semantic modification to khrplatform.h was at commit ID:
+ *      67a3e0864c2d75ea5287b9f3d2eb74a745936692
+ *
+ * Adopters may modify this file to suit their platform. Adopters are
+ * encouraged to submit platform specific modifications to the Khronos
+ * group so that they can be included in future versions of this file.
+ * Please submit changes by filing pull requests or issues on
+ * the EGL Registry repository linked above.
+ *
+ *
+ * See the Implementer's Guidelines for information about where this file
+ * should be located on your system and for more details of its use:
+ *    http://www.khronos.org/registry/implementers_guide.pdf
+ *
+ * This file should be included as
+ *        #include <KHR/khrplatform.h>
+ * by Khronos client API header files that use its types and defines.
+ *
+ * The types in khrplatform.h should only be used to define API-specific types.
+ *
+ * Types defined in khrplatform.h:
+ *    khronos_int8_t              signed   8  bit
+ *    khronos_uint8_t             unsigned 8  bit
+ *    khronos_int16_t             signed   16 bit
+ *    khronos_uint16_t            unsigned 16 bit
+ *    khronos_int32_t             signed   32 bit
+ *    khronos_uint32_t            unsigned 32 bit
+ *    khronos_int64_t             signed   64 bit
+ *    khronos_uint64_t            unsigned 64 bit
+ *    khronos_intptr_t            signed   same number of bits as a pointer
+ *    khronos_uintptr_t           unsigned same number of bits as a pointer
+ *    khronos_ssize_t             signed   size
+ *    khronos_usize_t             unsigned size
+ *    khronos_float_t             signed   32 bit floating point
+ *    khronos_time_ns_t           unsigned 64 bit time in nanoseconds
+ *    khronos_utime_nanoseconds_t unsigned time interval or absolute time in
+ *                                         nanoseconds
+ *    khronos_stime_nanoseconds_t signed time interval in nanoseconds
+ *    khronos_boolean_enum_t      enumerated boolean type. This should
+ *      only be used as a base type when a client API's boolean type is
+ *      an enum. Client APIs which use an integer or other type for
+ *      booleans cannot use this as the base type for their boolean.
+ *
+ * Tokens defined in khrplatform.h:
+ *
+ *    KHRONOS_FALSE, KHRONOS_TRUE Enumerated boolean false/true values.
+ *
+ *    KHRONOS_SUPPORT_INT64 is 1 if 64 bit integers are supported; otherwise 0.
+ *    KHRONOS_SUPPORT_FLOAT is 1 if floats are supported; otherwise 0.
+ *
+ * Calling convention macros defined in this file:
+ *    KHRONOS_APICALL
+ *    KHRONOS_APIENTRY
+ *    KHRONOS_APIATTRIBUTES
+ *
+ * These may be used in function prototypes as:
+ *
+ *      KHRONOS_APICALL void KHRONOS_APIENTRY funcname(
+ *                                  int arg1,
+ *                                  int arg2) KHRONOS_APIATTRIBUTES;
+ */
+
+#if defined(__SCITECH_SNAP__) && !defined(KHRONOS_STATIC)
+#   define KHRONOS_STATIC 1
+#endif
+
+/*-------------------------------------------------------------------------
+ * Definition of KHRONOS_APICALL
+ *-------------------------------------------------------------------------
+ * This precedes the return type of the function in the function prototype.
+ */
+#if defined(KHRONOS_STATIC)
+    /* If the preprocessor constant KHRONOS_STATIC is defined, make the
+     * header compatible with static linking. */
+#   define KHRONOS_APICALL
+#elif defined(_WIN32)
+#   define KHRONOS_APICALL __declspec(dllimport)
+#elif defined (__SYMBIAN32__)
+#   define KHRONOS_APICALL IMPORT_C
+#elif defined(__ANDROID__)
+#   define KHRONOS_APICALL __attribute__((visibility("default")))
+#else
+#   define KHRONOS_APICALL
+#endif
+
+/*-------------------------------------------------------------------------
+ * Definition of KHRONOS_APIENTRY
+ *-------------------------------------------------------------------------
+ * This follows the return type of the function  and precedes the function
+ * name in the function prototype.
+ */
+#if defined(_WIN32) && !defined(_WIN32_WCE) && !defined(__SCITECH_SNAP__)
+    /* Win32 but not WinCE */
+#   define KHRONOS_APIENTRY __stdcall
+#else
+#   define KHRONOS_APIENTRY
+#endif
+
+/*-------------------------------------------------------------------------
+ * Definition of KHRONOS_APIATTRIBUTES
+ *-------------------------------------------------------------------------
+ * This follows the closing parenthesis of the function prototype arguments.
+ */
+#if defined (__ARMCC_2__)
+#define KHRONOS_APIATTRIBUTES __softfp
+#else
+#define KHRONOS_APIATTRIBUTES
+#endif
+
+/*-------------------------------------------------------------------------
+ * basic type definitions
+ *-----------------------------------------------------------------------*/
+#if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || defined(__GNUC__) || defined(__SCO__) || defined(__USLC__)
+
+
+/*
+ * Using <stdint.h>
+ */
+#include <stdint.h>
+typedef int32_t                 khronos_int32_t;
+typedef uint32_t                khronos_uint32_t;
+typedef int64_t                 khronos_int64_t;
+typedef uint64_t                khronos_uint64_t;
+#define KHRONOS_SUPPORT_INT64   1
+#define KHRONOS_SUPPORT_FLOAT   1
+/*
+ * To support platform where unsigned long cannot be used interchangeably with
+ * inptr_t (e.g. CHERI-extended ISAs), we can use the stdint.h intptr_t.
+ * Ideally, we could just use (u)intptr_t everywhere, but this could result in
+ * ABI breakage if khronos_uintptr_t is changed from unsigned long to
+ * unsigned long long or similar (this results in different C++ name mangling).
+ * To avoid changes for existing platforms, we restrict usage of intptr_t to
+ * platforms where the size of a pointer is larger than the size of long.
+ */
+#if defined(__SIZEOF_LONG__) && defined(__SIZEOF_POINTER__)
+#if __SIZEOF_POINTER__ > __SIZEOF_LONG__
+#define KHRONOS_USE_INTPTR_T
+#endif
+#endif
+
+#elif defined(__VMS ) || defined(__sgi)
+
+/*
+ * Using <inttypes.h>
+ */
+#include <inttypes.h>
+typedef int32_t                 khronos_int32_t;
+typedef uint32_t                khronos_uint32_t;
+typedef int64_t                 khronos_int64_t;
+typedef uint64_t                khronos_uint64_t;
+#define KHRONOS_SUPPORT_INT64   1
+#define KHRONOS_SUPPORT_FLOAT   1
+
+#elif defined(_WIN32) && !defined(__SCITECH_SNAP__)
+
+/*
+ * Win32
+ */
+typedef __int32                 khronos_int32_t;
+typedef unsigned __int32        khronos_uint32_t;
+typedef __int64                 khronos_int64_t;
+typedef unsigned __int64        khronos_uint64_t;
+#define KHRONOS_SUPPORT_INT64   1
+#define KHRONOS_SUPPORT_FLOAT   1
+
+#elif defined(__sun__) || defined(__digital__)
+
+/*
+ * Sun or Digital
+ */
+typedef int                     khronos_int32_t;
+typedef unsigned int            khronos_uint32_t;
+#if defined(__arch64__) || defined(_LP64)
+typedef long int                khronos_int64_t;
+typedef unsigned long int       khronos_uint64_t;
+#else
+typedef long long int           khronos_int64_t;
+typedef unsigned long long int  khronos_uint64_t;
+#endif /* __arch64__ */
+#define KHRONOS_SUPPORT_INT64   1
+#define KHRONOS_SUPPORT_FLOAT   1
+
+#elif 0
+
+/*
+ * Hypothetical platform with no float or int64 support
+ */
+typedef int                     khronos_int32_t;
+typedef unsigned int            khronos_uint32_t;
+#define KHRONOS_SUPPORT_INT64   0
+#define KHRONOS_SUPPORT_FLOAT   0
+
+#else
+
+/*
+ * Generic fallback
+ */
+#include <stdint.h>
+typedef int32_t                 khronos_int32_t;
+typedef uint32_t                khronos_uint32_t;
+typedef int64_t                 khronos_int64_t;
+typedef uint64_t                khronos_uint64_t;
+#define KHRONOS_SUPPORT_INT64   1
+#define KHRONOS_SUPPORT_FLOAT   1
+
+#endif
+
+
+/*
+ * Types that are (so far) the same on all platforms
+ */
+typedef signed   char          khronos_int8_t;
+typedef unsigned char          khronos_uint8_t;
+typedef signed   short int     khronos_int16_t;
+typedef unsigned short int     khronos_uint16_t;
+
+/*
+ * Types that differ between LLP64 and LP64 architectures - in LLP64,
+ * pointers are 64 bits, but 'long' is still 32 bits. Win64 appears
+ * to be the only LLP64 architecture in current use.
+ */
+#ifdef KHRONOS_USE_INTPTR_T
+typedef intptr_t               khronos_intptr_t;
+typedef uintptr_t              khronos_uintptr_t;
+#elif defined(_WIN64)
+typedef signed   long long int khronos_intptr_t;
+typedef unsigned long long int khronos_uintptr_t;
+#else
+typedef signed   long  int     khronos_intptr_t;
+typedef unsigned long  int     khronos_uintptr_t;
+#endif
+
+#if defined(_WIN64)
+typedef signed   long long int khronos_ssize_t;
+typedef unsigned long long int khronos_usize_t;
+#else
+typedef signed   long  int     khronos_ssize_t;
+typedef unsigned long  int     khronos_usize_t;
+#endif
+
+#if KHRONOS_SUPPORT_FLOAT
+/*
+ * Float type
+ */
+typedef          float         khronos_float_t;
+#endif
+
+#if KHRONOS_SUPPORT_INT64
+/* Time types
+ *
+ * These types can be used to represent a time interval in nanoseconds or
+ * an absolute Unadjusted System Time.  Unadjusted System Time is the number
+ * of nanoseconds since some arbitrary system event (e.g. since the last
+ * time the system booted).  The Unadjusted System Time is an unsigned
+ * 64 bit value that wraps back to 0 every 584 years.  Time intervals
+ * may be either signed or unsigned.
+ */
+typedef khronos_uint64_t       khronos_utime_nanoseconds_t;
+typedef khronos_int64_t        khronos_stime_nanoseconds_t;
+#endif
+
+/*
+ * Dummy value used to pad enum types to 32 bits.
+ */
+#ifndef KHRONOS_MAX_ENUM
+#define KHRONOS_MAX_ENUM 0x7FFFFFFF
+#endif
+
+/*
+ * Enumerated boolean type
+ *
+ * Values other than zero should be considered to be true.  Therefore
+ * comparisons should not be made against KHRONOS_TRUE.
+ */
+typedef enum {
+    KHRONOS_FALSE = 0,
+    KHRONOS_TRUE  = 1,
+    KHRONOS_BOOLEAN_ENUM_FORCE_SIZE = KHRONOS_MAX_ENUM
+} khronos_boolean_enum_t;
+
+#endif /* __khrplatform_h_ */

3rdlibs/glfw

@@ -0,0 +1 @@
+Subproject commit 2e12ef00bb4b96c7b4c6ea14f594cc8f50ea718f

3rdlibs/lua

@@ -0,0 +1 @@
+Subproject commit d61b0c60287c38008d312ddd11724a15b1737f7b

CMakeLists.txt

@@ -0,0 +1,34 @@
+cmake_minimum_required(VERSION 3.15)
+
+set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
+
+project(HazelLuaEngine
+    VERSION 0.1.0
+    DESCRIPTION "a tiny engine made with C and Lua for 1MGames"
+    LANGUAGES C
+)
+
+set(HAZEL_CORE_NAME hazel_core)
+set(HAZEL_EXECUTOR_NAME hazel)
+
+# glfw
+set(GLFW_BUILD_DOCS OFF)
+set(GLFW_INSTALL OFF)
+
+include(cmake/FindLua.cmake)
+include(cmake/FindGLFW.cmake)
+include(cmake/FindGLAD.cmake)
+
+# hazel
+aux_source_directory(src HAZEL_SRC)
+add_library(${HAZEL_CORE_NAME} STATIC ${HAZEL_SRC})
+target_link_libraries(${HAZEL_CORE_NAME} PUBLIC glad glfw)
+target_include_directories(${HAZEL_CORE_NAME} PUBLIC .)
+target_compile_features(${HAZEL_CORE_NAME} PUBLIC c_std_11)
+
+if(WIN32)
+    target_compile_definitions(${HAZEL_CORE_NAME} PUBLIC WIN32)
+endif(WIN32)
+
+# sandbox
+add_subdirectory(binding/lua/executor)

binding/lua/executor/CMakeLists.txt

@@ -0,0 +1,2 @@
+add_executable(${HAZEL_EXECUTOR_NAME} ./executor.c)
+target_link_libraries(${HAZEL_EXECUTOR_NAME} PUBLIC ${HAZEL_CORE_NAME} lua)

binding/lua/executor/executor.c

@@ -0,0 +1,22 @@
+#include "hazel/hazel.h"
+
+#include "lua.h"
+#include "lualib.h"
+#include "lauxlib.h"
+
+int main() {
+    lua_State* L = luaL_newstate();
+    if (!L) {
+        printf("lua init failed\n");
+        return 1;
+    }
+    // luaL_openlibs(L);
+
+    if (luaL_loadfile(L, "main.lua") || lua_pcall(L, 0, 0, 0)) {
+        printf("main.lua load and execute failed\n");
+        return 1;
+    }
+
+    lua_close(L);
+    return 0;
+}

binding/lua/main.lua

@@ -0,0 +1 @@
+print("hello")

cmake/FindGLAD.cmake

@@ -0,0 +1,3 @@
+aux_source_directory(3rdlibs/glad/src GLAD_SRC)
+add_library(glad STATIC ${GLAD_SRC})
+target_include_directories(glad PUBLIC 3rdlibs/glad/include)

cmake/FindGLFW.cmake

@@ -0,0 +1 @@
+add_subdirectory(3rdlibs/glfw)

cmake/FindLua.cmake

@@ -0,0 +1,35 @@
+set(LUA_SRC
+    3rdlibs/lua/lapi.c
+    3rdlibs/lua/lcode.c
+    3rdlibs/lua/lctype.c
+    3rdlibs/lua/ldebug.c
+    3rdlibs/lua/ldo.c
+    3rdlibs/lua/ldump.c
+    3rdlibs/lua/lfunc.c
+    3rdlibs/lua/lgc.c
+    3rdlibs/lua/llex.c
+
+    3rdlibs/lua/lmem.c
+    3rdlibs/lua/lobject.c
+    3rdlibs/lua/lopcodes.c
+    3rdlibs/lua/lparser.c
+    3rdlibs/lua/lstate.c
+    3rdlibs/lua/lstring.c
+    3rdlibs/lua/ltable.c
+
+    3rdlibs/lua/ltm.c
+    3rdlibs/lua/lundump.c
+    3rdlibs/lua/lvm.c
+    3rdlibs/lua/lzio.c
+    3rdlibs/lua/ltests.c
+    3rdlibs/lua/lauxlib.c
+)
+add_library(lua STATIC ${LUA_SRC})
+target_include_directories(lua PUBLIC ./3rdlibs/lua)
+target_compile_features(lua PRIVATE c_std_99)
+
+# TODO if you use MinGW, maybe you need this
+# target_compile_options(lua PRIVATE LUA_USE_LINUX)
+if (NOT WIN32)
+    target_compile_options(lua PRIVATE LUA_USE_LINUX)
+endif()

hazel/hazel.h

@@ -0,0 +1,8 @@
+#ifndef __HAZEL_HAZEL_H__
+#define __HAZEL_HAZEL_H__
+
+#include "pch.h"
+
+DLLEXPORT void RunExampleWindow();
+
+#endif

hazel/pch.h

@@ -0,0 +1,19 @@
+#ifndef __HAZEL_PCH_H__
+#define __HAZEL_PCH_H__
+
+#define GLFW_INCLUDE_NONE
+#include "GLFW/glfw3.h"
+
+#include "glad/glad.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#ifdef WIN32
+#define DLLEXPORT __declspec(dllexport)
+#else
+#define DLLEXPORT
+#endif
+
+#endif

src/hazel.c

@@ -0,0 +1,37 @@
+#include "hazel/hazel.h"
+
+void RunExampleWindow() {
+    GLFWwindow* window;
+
+    /* Initialize the library */
+    if (!glfwInit())
+        return;
+
+    /* Create a windowed mode window and its OpenGL context */
+    window = glfwCreateWindow(640, 480, "Hello World", NULL, NULL);
+    if (!window) {
+        glfwTerminate();
+        return;
+    }
+
+    /* Make the window's context current */
+    glfwMakeContextCurrent(window);
+
+    /* Use Glad to load OpenGL */
+    gladLoadGL();
+
+    glClearColor(0.1, 0.1, 0.1, 1);
+    /* Loop until the user closes the window */
+    while (!glfwWindowShouldClose(window)) {
+        /* Render here */
+        glClear(GL_COLOR_BUFFER_BIT);
+
+        /* Swap front and back buffers */
+        glfwSwapBuffers(window);
+
+        /* Poll for and process events */
+        glfwPollEvents();
+    }
+
+    glfwTerminate();
+}