refactor: move glfw functions into separate table

1 files changed, 369 insertions, 0 deletions

diff --git a/src/opengl/window.c b/src/opengl/window.c
new file mode 100644
index 0000000..46bc2f5
--- /dev/null
+++ b/src/opengl/window.c
@@ -0,0 +1,369 @@
+#include <stdlib.h>
+#include <glad/glad.h>
+#include <GLFW/glfw3.h>
+#include <lua.h>
+#include <lauxlib.h>
+#include "util/util.h"
+
+struct window_data {
+	lua_State *L;
+	int framebuffer_size_callback;
+};
+
+struct window_data * create_window_data(lua_State *L)
+{
+	struct window_data *wdata = malloc(sizeof(struct window_data));
+	if (wdata == NULL)
+		return NULL;
+	wdata->L = L;
+	wdata->framebuffer_size_callback = LUA_NOREF;
+	return wdata;
+}
+
+int window_create(lua_State *L);
+int window_destroy(lua_State *L);
+int window_make_context_current(lua_State *L);
+int window_set_hint(lua_State *L);
+int window_should_close(lua_State *L);
+int window_set_should_close(lua_State *L);
+int window_poll_events(lua_State *L);
+int window_swap_buffers(lua_State *L);
+int window_set_framebuffer_size_callback(lua_State *L);
+int window_get_time(lua_State *L);
+int window_get_key(lua_State *L);
+int window_get_cursor_pos(lua_State *L);
+int window_set_input_mode(lua_State *L);
+
+
+static const char *window_tname = "window";
+
+
+void setup_window(lua_State *L, int honey_index)
+{
+	luaL_newmetatable(L, window_tname);
+	lua_pop(L, 1);
+
+	struct honey_tbl_t tbl[] = {
+		H_FUNC("create", window_create),
+		H_FUNC("destroy", window_destroy),
+		H_FUNC("makeContextCurrent", window_make_context_current),
+		H_FUNC("setHint", window_set_hint),
+		H_FUNC("shouldClose", window_should_close),
+		H_FUNC("setShouldClose", window_set_should_close),
+		H_FUNC("pollEvents", window_poll_events),
+		H_FUNC("swapBuffers", window_swap_buffers),
+		H_FUNC("setFramebufferSizeCallback", window_set_framebuffer_size_callback),
+		H_FUNC("getTime", window_get_time),
+		H_FUNC("getKey", window_get_key),
+		H_FUNC("getCursorPos", window_get_cursor_pos),
+		H_FUNC("setInputMode", window_set_input_mode),
+
+		/* input modes */
+		H_INT("CURSOR", GLFW_CURSOR),
+
+		/* cursor modes */
+		H_INT("CURSOR_NORMAL", GLFW_CURSOR_NORMAL),
+		H_INT("CURSOR_HIDDEN", GLFW_CURSOR_HIDDEN),
+		H_INT("CURSOR_DISABLED", GLFW_CURSOR_DISABLED),
+
+		/* key states */
+		H_INT("PRESS", GLFW_PRESS),
+		H_INT("RELEASE", GLFW_RELEASE),
+
+		/* key buttons */
+		H_INT("KEY_UNKNOWN", GLFW_KEY_UNKNOWN),
+		H_INT("KEY_SPACE", GLFW_KEY_SPACE),
+		H_INT("KEY_APOSTROPHE", GLFW_KEY_APOSTROPHE),
+		H_INT("KEY_COMMA", GLFW_KEY_COMMA),
+		H_INT("KEY_MINUS", GLFW_KEY_MINUS),
+		H_INT("KEY_PERIOD", GLFW_KEY_PERIOD),
+		H_INT("KEY_SLASH", GLFW_KEY_SLASH),
+		H_INT("KEY_0", GLFW_KEY_0),
+		H_INT("KEY_1", GLFW_KEY_1),
+		H_INT("KEY_2", GLFW_KEY_2),
+		H_INT("KEY_3", GLFW_KEY_3),
+		H_INT("KEY_4", GLFW_KEY_4),
+		H_INT("KEY_5", GLFW_KEY_5),
+		H_INT("KEY_6", GLFW_KEY_6),
+		H_INT("KEY_7", GLFW_KEY_7),
+		H_INT("KEY_8", GLFW_KEY_8),
+		H_INT("KEY_9", GLFW_KEY_9),
+		H_INT("KEY_SEMICOLON", GLFW_KEY_SEMICOLON),
+		H_INT("KEY_EQUAL", GLFW_KEY_EQUAL),
+		H_INT("KEY_A", GLFW_KEY_A),
+		H_INT("KEY_B", GLFW_KEY_B),
+		H_INT("KEY_C", GLFW_KEY_C),
+		H_INT("KEY_D", GLFW_KEY_D),
+		H_INT("KEY_E", GLFW_KEY_E),
+		H_INT("KEY_F", GLFW_KEY_F),
+		H_INT("KEY_G", GLFW_KEY_G),
+		H_INT("KEY_H", GLFW_KEY_H),
+		H_INT("KEY_I", GLFW_KEY_I),
+		H_INT("KEY_J", GLFW_KEY_J),
+		H_INT("KEY_K", GLFW_KEY_K),
+		H_INT("KEY_L", GLFW_KEY_L),
+		H_INT("KEY_M", GLFW_KEY_M),
+		H_INT("KEY_N", GLFW_KEY_N),
+		H_INT("KEY_O", GLFW_KEY_O),
+		H_INT("KEY_P", GLFW_KEY_P),
+		H_INT("KEY_Q", GLFW_KEY_Q),
+		H_INT("KEY_R", GLFW_KEY_R),
+		H_INT("KEY_S", GLFW_KEY_S),
+		H_INT("KEY_T", GLFW_KEY_T),
+		H_INT("KEY_U", GLFW_KEY_U),
+		H_INT("KEY_V", GLFW_KEY_V),
+		H_INT("KEY_W", GLFW_KEY_W),
+		H_INT("KEY_X", GLFW_KEY_X),
+		H_INT("KEY_Y", GLFW_KEY_Y),
+		H_INT("KEY_Z", GLFW_KEY_Z),
+		H_INT("KEY_LEFT_BRACKET", GLFW_KEY_LEFT_BRACKET),
+		H_INT("KEY_BACKSLASH", GLFW_KEY_BACKSLASH),
+		H_INT("KEY_RIGHT_BRACKET", GLFW_KEY_RIGHT_BRACKET),
+		H_INT("KEY_GRAVE_ACCENT", GLFW_KEY_GRAVE_ACCENT),
+		H_INT("KEY_WORLD_1", GLFW_KEY_WORLD_1),
+		H_INT("KEY_WORLD_2", GLFW_KEY_WORLD_2),
+		H_INT("KEY_ESCAPE", GLFW_KEY_ESCAPE),
+		H_INT("KEY_ENTER", GLFW_KEY_ENTER),
+		H_INT("KEY_TAB", GLFW_KEY_TAB),
+		H_INT("KEY_BACKSPACE", GLFW_KEY_BACKSPACE),
+		H_INT("KEY_INSERT", GLFW_KEY_INSERT),
+		H_INT("KEY_DELETE", GLFW_KEY_DELETE),
+		H_INT("KEY_RIGHT", GLFW_KEY_RIGHT),
+		H_INT("KEY_LEFT", GLFW_KEY_LEFT),
+		H_INT("KEY_DOWN", GLFW_KEY_DOWN),
+		H_INT("KEY_UP", GLFW_KEY_UP),
+		H_INT("KEY_PAGE_UP", GLFW_KEY_PAGE_UP),
+		H_INT("KEY_PAGE_DOWN", GLFW_KEY_PAGE_DOWN),
+		H_INT("KEY_HOME", GLFW_KEY_HOME),
+		H_INT("KEY_END", GLFW_KEY_END),
+		H_INT("KEY_CAPS_LOCK", GLFW_KEY_CAPS_LOCK),
+		H_INT("KEY_SCROLL_LOCK", GLFW_KEY_SCROLL_LOCK),
+		H_INT("KEY_NUM_LOCK", GLFW_KEY_NUM_LOCK),
+		H_INT("KEY_PRINT_SCREEN", GLFW_KEY_PRINT_SCREEN),
+		H_INT("KEY_PAUSE", GLFW_KEY_PAUSE),
+		H_INT("KEY_F1", GLFW_KEY_F1),
+		H_INT("KEY_F2", GLFW_KEY_F2),
+		H_INT("KEY_F3", GLFW_KEY_F3),
+		H_INT("KEY_F4", GLFW_KEY_F4),
+		H_INT("KEY_F5", GLFW_KEY_F5),
+		H_INT("KEY_F6", GLFW_KEY_F6),
+		H_INT("KEY_F7", GLFW_KEY_F7),
+		H_INT("KEY_F8", GLFW_KEY_F8),
+		H_INT("KEY_F9", GLFW_KEY_F9),
+		H_INT("KEY_F", GLFW_KEY_F),
+		H_INT("KEY_F", GLFW_KEY_F),
+		H_INT("KEY_F", GLFW_KEY_F),
+		H_INT("KEY_F", GLFW_KEY_F),
+		H_INT("KEY_F", GLFW_KEY_F),
+		H_INT("KEY_F", GLFW_KEY_F),
+		H_INT("KEY_F", GLFW_KEY_F),
+		H_INT("KEY_F", GLFW_KEY_F),
+		H_INT("KEY_F", GLFW_KEY_F),
+		H_INT("KEY_F", GLFW_KEY_F),
+		H_INT("KEY_F", GLFW_KEY_F),
+		H_INT("KEY_F", GLFW_KEY_F),
+		H_INT("KEY_F", GLFW_KEY_F),
+		H_INT("KEY_F", GLFW_KEY_F),
+		H_INT("KEY_F", GLFW_KEY_F),
+		H_INT("KEY_F", GLFW_KEY_F),
+		H_INT("KEY_KP_0", GLFW_KEY_KP_0),
+		H_INT("KEY_KP_1", GLFW_KEY_KP_1),
+		H_INT("KEY_KP_2", GLFW_KEY_KP_2),
+		H_INT("KEY_KP_3", GLFW_KEY_KP_3),
+		H_INT("KEY_KP_4", GLFW_KEY_KP_4),
+		H_INT("KEY_KP_5", GLFW_KEY_KP_5),
+		H_INT("KEY_KP_6", GLFW_KEY_KP_6),
+		H_INT("KEY_KP_7", GLFW_KEY_KP_7),
+		H_INT("KEY_KP_8", GLFW_KEY_KP_8),
+		H_INT("KEY_KP_9", GLFW_KEY_KP_9),
+		H_INT("KEY_KP_DECIMAL", GLFW_KEY_KP_DECIMAL),
+		H_INT("KEY_KP_DIVIDE", GLFW_KEY_KP_DIVIDE),
+		H_INT("KEY_KP_MULTIPLY", GLFW_KEY_KP_MULTIPLY),
+		H_INT("KEY_KP_SUBTRACT", GLFW_KEY_KP_SUBTRACT),
+		H_INT("KEY_KP_ADD", GLFW_KEY_KP_ADD),
+		H_INT("KEY_KP_ENTER", GLFW_KEY_KP_ENTER),
+		H_INT("KEY_KP_EQUAL", GLFW_KEY_KP_EQUAL),
+		H_INT("KEY_LEFT_SHIFT", GLFW_KEY_LEFT_SHIFT),
+		H_INT("KEY_LEFT_CONTROL", GLFW_KEY_LEFT_CONTROL),
+		H_INT("KEY_LEFT_ALT", GLFW_KEY_LEFT_ALT),
+		H_INT("KEY_LEFT_SUPER", GLFW_KEY_LEFT_SUPER),
+		H_INT("KEY_RIGHT_SHIFT", GLFW_KEY_RIGHT_SHIFT),
+		H_INT("KEY_RIGHT_CONTROL", GLFW_KEY_RIGHT_CONTROL),
+		H_INT("KEY_RIGHT_ALT", GLFW_KEY_RIGHT_ALT),
+		H_INT("KEY_RIGHT_SUPER", GLFW_KEY_RIGHT_SUPER),
+		H_INT("KEY_MENU", GLFW_KEY_MENU),
+
+		H_END
+	};
+	create_table(L, tbl);
+	int window_tbl = lua_gettop(L);
+
+	struct honey_tbl_t hint_types[] = {
+		H_INT("contextVersionMajor", GLFW_CONTEXT_VERSION_MAJOR),
+		H_INT("contextVersionMinor", GLFW_CONTEXT_VERSION_MINOR),
+		H_INT("openGlProfile", GLFW_OPENGL_PROFILE),
+		H_END
+	};
+	create_table(L, hint_types);
+	lua_setfield(L, window_tbl, "hintType");
+
+	struct honey_tbl_t profile_types[] = {
+		H_INT("openGlCoreProfile", GLFW_OPENGL_CORE_PROFILE),
+		H_END
+	};
+	create_table(L, profile_types);
+	lua_setfield(L, window_tbl, "profileType");
+
+	lua_setfield(L, honey_index, "window");
+}
+
+
+static void framebuffer_size_callback_(GLFWwindow *win, int width, int height)
+{
+	struct window_data *wdata = glfwGetWindowUserPointer(win);
+	lua_State *L = wdata->L;
+	if (wdata->framebuffer_size_callback != LUA_NOREF) {
+		lua_rawgeti(L, LUA_REGISTRYINDEX, wdata->framebuffer_size_callback);
+		lua_pushlightuserdata(L, win);
+		lua_pushinteger(L, width);
+		lua_pushinteger(L, height);
+		lua_call(L, 3, 0);
+	}
+}
+
+int window_create(lua_State *L)
+{
+	lua_Integer width, height;
+	width = luaL_checkinteger(L, 1);
+	height = luaL_checkinteger(L, 2);
+	const char *title = luaL_checkstring(L, 3);
+
+	GLFWwindow **win = lua_newuserdata(L, sizeof(GLFWwindow *));
+	*win = glfwCreateWindow(width, height, title, NULL, NULL);
+	if (*win == NULL)
+		luaL_error(L, "failed to create window");
+	
+	struct window_data *wdata = create_window_data(L);
+	glfwSetWindowUserPointer(*win, wdata);
+
+	glfwSetFramebufferSizeCallback(*win, framebuffer_size_callback_);
+	
+	luaL_getmetatable(L, window_tname);
+	lua_setmetatable(L, -2);
+	return 1;
+}
+
+
+int window_destroy(lua_State *L)
+{
+	GLFWwindow **win = luaL_checkudata(L, 1, window_tname);
+	void *wdata = glfwGetWindowUserPointer(*win);
+	if (wdata != NULL) {
+		free(wdata);
+		glfwSetWindowUserPointer(*win, NULL);
+	}
+	glfwDestroyWindow(*win);
+	return 0;
+}
+
+
+int window_make_context_current(lua_State *L)
+{
+	GLFWwindow **win = luaL_checkudata(L, 1, window_tname);
+	glfwMakeContextCurrent(*win);
+	return 0;
+}
+
+
+int window_set_hint(lua_State *L)
+{
+	int hint = luaL_checkinteger(L, 1);
+	int value = luaL_checkinteger(L, 2);
+	glfwWindowHint(hint, value);
+	return 0;
+}
+
+
+int window_should_close(lua_State *L)
+{
+	GLFWwindow **win = luaL_checkudata(L, 1, window_tname);
+	lua_pushboolean(L, glfwWindowShouldClose(*win));
+	return 1;
+}
+
+
+int window_set_should_close(lua_State *L)
+{
+	GLFWwindow **win = luaL_checkudata(L, 1, window_tname);
+	int value = lua_toboolean(L, 2);
+
+	glfwSetWindowShouldClose(*win, value);
+	return 0;
+}
+
+
+int window_poll_events(lua_State *L)
+{
+	glfwPollEvents();
+	return 0;
+}
+
+
+int window_swap_buffers(lua_State *L)
+{
+	GLFWwindow **win = luaL_checkudata(L, 1, window_tname);
+	glfwSwapBuffers(*win);
+	return 0;
+}
+
+
+int window_set_framebuffer_size_callback(lua_State *L)
+{
+	GLFWwindow **win = luaL_checkudata(L, 1, window_tname);
+	luaL_checktype(L, 2, LUA_TFUNCTION);
+	int func = 2;
+
+	struct window_data *wdata = glfwGetWindowUserPointer(*win);
+
+	lua_pushvalue(L, func);
+	wdata->framebuffer_size_callback = luaL_ref(L, LUA_REGISTRYINDEX);
+	return 0;
+}
+
+
+int window_get_time(lua_State *L)
+{
+	lua_pushnumber(L, glfwGetTime());
+	return 1;
+}
+
+
+int window_get_key(lua_State *L)
+{
+	GLFWwindow **win = luaL_checkudata(L, 1, window_tname);
+	int key = luaL_checkinteger(L, 2);
+	lua_pushinteger(L, glfwGetKey(*win, key));
+	return 1;
+}
+
+
+int window_get_cursor_pos(lua_State *L)
+{
+	GLFWwindow **win = luaL_checkudata(L, 1, window_tname);
+	double x, y;
+	glfwGetCursorPos(*win, &x, &y);
+	lua_pushnumber(L, x);
+	lua_pushnumber(L, y);
+	return 2;
+}
+
+
+int window_set_input_mode(lua_State *L)
+{
+	GLFWwindow **win = luaL_checkudata(L, 1, window_tname);
+	int mode = luaL_checkinteger(L, 2);
+	int value = luaL_checkinteger(L, 3);
+
+	glfwSetInputMode(*win, mode, value);
+	return 0;
+}