From d9bc7a5a4931a2551e2425d02d68f8bca88bc5da Mon Sep 17 00:00:00 2001 From: Kienan Stewart Date: Tue, 3 Sep 2019 00:07:40 -0400 Subject: [PATCH] Initial commit --- .gitignore | 2 + 3rdparty/glad | 1 + 3rdparty/nuklear | 1 + CMakeLists.txt | 31 +++ src/client/client.cpp | 123 +++++++++ src/client/nuklear_glfw_gl3.h | 492 ++++++++++++++++++++++++++++++++++ src/server/server.cpp | 46 ++++ src/test.cpp | 38 +++ 8 files changed, 734 insertions(+) create mode 100644 .gitignore create mode 160000 3rdparty/glad create mode 160000 3rdparty/nuklear create mode 100644 CMakeLists.txt create mode 100644 src/client/client.cpp create mode 100644 src/client/nuklear_glfw_gl3.h create mode 100644 src/server/server.cpp create mode 100644 src/test.cpp diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..f921996 --- /dev/null +++ b/.gitignore @@ -0,0 +1,2 @@ +build/ +CMakeFiles/ diff --git a/3rdparty/glad b/3rdparty/glad new file mode 160000 index 0000000..de6c39e --- /dev/null +++ b/3rdparty/glad @@ -0,0 +1 @@ +Subproject commit de6c39e3040c987323b8ed078c36442f4fb681b3 diff --git a/3rdparty/nuklear b/3rdparty/nuklear new file mode 160000 index 0000000..5d81d32 --- /dev/null +++ b/3rdparty/nuklear @@ -0,0 +1 @@ +Subproject commit 5d81d324c41d88ae67d6a3a91b28b3cbd74c7b61 diff --git a/CMakeLists.txt b/CMakeLists.txt new file mode 100644 index 0000000..93c868f --- /dev/null +++ b/CMakeLists.txt @@ -0,0 +1,31 @@ +cmake_minimum_required(VERSION 3.13) +project(blah) +set(CMAKE_BUILD_TYPE Debug) +include_directories("${PROJECT_SOURCE_DIR}/src/") +#add_executable(test ${PROJECT_SOURCE_DIR}/src/test.cpp) + +find_package(PkgConfig REQUIRED) + +# OpenGL +find_package(OpenGL REQUIRED) +#find_package(GLEW REQUIRED) +find_package(GLUT REQUIRED) +pkg_search_module(GLFW REQUIRED glfw3) + +# Glad +set(GLAD_API "gl=3.3" CACHE STRING " " FORCE) +add_subdirectory("${PROJECT_SOURCE_DIR}/3rdparty/glad") + +# Nuklear +set(NUKLEAR_INCLUDE_DIR "${PROJECT_SOURCE_DIR}/3rdparty/nuklear") + +#Client +#target_include_directories(client "${PROJECT_SOURCE_DIR}/src/client") +add_executable(client ${PROJECT_SOURCE_DIR}/src/client/client.cpp) +target_include_directories(client PUBLIC ${GLFW_INCLUDE_DIRS} ${GLUT_INCLUDE_DIR} ${OPENGL_INCLUDE_DIRS} ${NUKLEAR_INCLUDE_DIR} ${GLAD_INCLUDE_DIRS}) +target_link_libraries(client ${GLFW_LIBRARIES} ${GLUT_LIBRARY} + ${OPENGL_LIBRARIES} ${GLAD_LIBRARIES} ${CMAKE_DL_LIBS}) + +# Server +#target_include_directories(server "${PROJECT_SOURCE_DIR}/src/server") +add_executable(server ${PROJECT_SOURCE_DIR}/src/server/server.cpp) diff --git a/src/client/client.cpp b/src/client/client.cpp new file mode 100644 index 0000000..dce943a --- /dev/null +++ b/src/client/client.cpp @@ -0,0 +1,123 @@ +#include +#include +#include + +#include +#include + +// Nuklear +#define NK_INCLUDE_FIXED_TYPES +#define NK_INCLUDE_STANDARD_IO +#define NK_INCLUDE_STANDARD_VARARGS +#define NK_INCLUDE_DEFAULT_ALLOCATOR +#define NK_INCLUDE_VERTEX_BUFFER_OUTPUT +#define NK_INCLUDE_FONT_BAKING +#define NK_INCLUDE_DEFAULT_FONT +#define NK_IMPLEMENTATION +#define NK_GLFW_GL3_IMPLEMENTATION +#define NK_KEYSTATE_BASED_INPUT +#include +#include "nuklear_glfw_gl3.h" + +#define MAX_VERTEX_BUFFER 512 * 1024 +#define MAX_ELEMENT_BUFFER 128 * 1024 + +static void error_callback(int error, const char* description) +{ + fprintf(stderr, "Error %d: %s\n", error, description); +} + +int main(int argc, char** argv) +{ + GLFWwindow* window; + + /* Initialize the library */ + glfwSetErrorCallback(error_callback); + if (!glfwInit()) { + fprintf(stdout, "[GFLW] Error: failed to init!\n"); + return -1; + } + + /* Create a windowed mode window and its OpenGL context */ + window = glfwCreateWindow(1024, 768, "Client", NULL, NULL); + glfwSetWindowAttrib(window, GLFW_DECORATED, GLFW_TRUE); + if (!window) { + glfwTerminate(); + return -1; + } + glfwMakeContextCurrent(window); + glfwSwapInterval(1); // Vsync + + if (!gladLoadGL()) { + fprintf(stderr, "[GLAD] Error loading\n"); + return 1; + } + + int width = 0, height = 0; + struct nk_context *ctx; + ctx = nk_glfw3_init(window, NK_GLFW3_INSTALL_CALLBACKS); + { + struct nk_font_atlas *atlas; + nk_glfw3_font_stash_begin(&atlas); + nk_glfw3_font_stash_end(); + } + struct nk_colorf bg; + bg.r = 0.10f, bg.g = 0.18f, bg.b = 0.24f, bg.a = 1.0f; + while(!glfwWindowShouldClose(window)) { + glfwPollEvents(); + // Process input. + nk_glfw3_new_frame(); + if (nk_begin(ctx, "Demo", nk_rect(50, 50, 230, 250), + NK_WINDOW_BORDER|NK_WINDOW_MOVABLE|NK_WINDOW_SCALABLE| + NK_WINDOW_MINIMIZABLE|NK_WINDOW_TITLE)) + { + enum {EASY, HARD}; + static int op = EASY; + static int property = 20; + nk_layout_row_static(ctx, 30, 80, 1); + if (nk_button_label(ctx, "button")) + fprintf(stdout, "button pressed\n"); + + nk_layout_row_dynamic(ctx, 30, 2); + if (nk_option_label(ctx, "easy", op == EASY)) op = EASY; + if (nk_option_label(ctx, "hard", op == HARD)) op = HARD; + + nk_layout_row_dynamic(ctx, 25, 1); + nk_property_int(ctx, "Compression:", 0, &property, 100, 10, 1); + + nk_layout_row_dynamic(ctx, 20, 1); + nk_label(ctx, "background:", NK_TEXT_LEFT); + nk_layout_row_dynamic(ctx, 25, 1); + if (nk_combo_begin_color(ctx, nk_rgb_cf(bg), nk_vec2(nk_widget_width(ctx),400))) { + nk_layout_row_dynamic(ctx, 120, 1); + bg = nk_color_picker(ctx, bg, NK_RGBA); + nk_layout_row_dynamic(ctx, 25, 1); + bg.r = nk_propertyf(ctx, "#R:", 0, bg.r, 1.0f, 0.01f,0.005f); + bg.g = nk_propertyf(ctx, "#G:", 0, bg.g, 1.0f, 0.01f,0.005f); + bg.b = nk_propertyf(ctx, "#B:", 0, bg.b, 1.0f, 0.01f,0.005f); + bg.a = nk_propertyf(ctx, "#A:", 0, bg.a, 1.0f, 0.01f,0.005f); + nk_combo_end(ctx); + } + } + nk_end(ctx); + + // @TODO Game tick + + // Rendering + /* IMPORTANT: `nk_glfw_render` modifies some global OpenGL state + * with blending, scissor, face culling, depth test and viewport and + * defaults everything back into a default state. + * Make sure to either a.) save and restore or b.) reset your own state after + * rendering the UI. */ + glfwGetWindowSize(window, &width, &height); + glViewport(0, 0, width, height); + glClear(GL_COLOR_BUFFER_BIT); + glClearColor(bg.r, bg.g, bg.b, bg.a); + nk_glfw3_render(NK_ANTI_ALIASING_ON, MAX_VERTEX_BUFFER, MAX_ELEMENT_BUFFER); + glfwSwapBuffers(window); + } + + nk_glfw3_shutdown(); + glfwTerminate(); + return 0; +} diff --git a/src/client/nuklear_glfw_gl3.h b/src/client/nuklear_glfw_gl3.h new file mode 100644 index 0000000..c8c6916 --- /dev/null +++ b/src/client/nuklear_glfw_gl3.h @@ -0,0 +1,492 @@ +/* + * Nuklear - 1.32.0 - public domain + * no warrenty implied; use at your own risk. + * authored from 2015-2016 by Micha Mettke + */ +/* + * ============================================================== + * + * API + * + * =============================================================== + */ +#ifndef NK_GLFW_GL3_H_ +#define NK_GLFW_GL3_H_ + +#include + +enum nk_glfw_init_state{ + NK_GLFW3_DEFAULT=0, + NK_GLFW3_INSTALL_CALLBACKS +}; + +NK_API struct nk_context* nk_glfw3_init(GLFWwindow *win, enum nk_glfw_init_state); +NK_API void nk_glfw3_shutdown(void); +NK_API void nk_glfw3_font_stash_begin(struct nk_font_atlas **atlas); +NK_API void nk_glfw3_font_stash_end(void); +NK_API void nk_glfw3_new_frame(void); +NK_API void nk_glfw3_render(enum nk_anti_aliasing, int max_vertex_buffer, int max_element_buffer); + +NK_API void nk_glfw3_device_destroy(void); +NK_API void nk_glfw3_device_create(void); + +NK_API void nk_glfw3_char_callback(GLFWwindow *win, unsigned int codepoint); +NK_API void nk_gflw3_scroll_callback(GLFWwindow *win, double xoff, double yoff); +NK_API void nk_glfw3_mouse_button_callback(GLFWwindow *win, int button, int action, int mods); + +#endif +/* + * ============================================================== + * + * IMPLEMENTATION + * + * =============================================================== + */ +#ifdef NK_GLFW_GL3_IMPLEMENTATION + +#ifndef NK_GLFW_TEXT_MAX +#define NK_GLFW_TEXT_MAX 256 +#endif +#ifndef NK_GLFW_DOUBLE_CLICK_LO +#define NK_GLFW_DOUBLE_CLICK_LO 0.02 +#endif +#ifndef NK_GLFW_DOUBLE_CLICK_HI +#define NK_GLFW_DOUBLE_CLICK_HI 0.2 +#endif + +struct nk_glfw_device { + struct nk_buffer cmds; + struct nk_draw_null_texture null; + GLuint vbo, vao, ebo; + GLuint prog; + GLuint vert_shdr; + GLuint frag_shdr; + GLint attrib_pos; + GLint attrib_uv; + GLint attrib_col; + GLint uniform_tex; + GLint uniform_proj; + GLuint font_tex; +}; + +struct nk_glfw_vertex { + float position[2]; + float uv[2]; + nk_byte col[4]; +}; + +static struct nk_glfw { + GLFWwindow *win; + int width, height; + int display_width, display_height; + struct nk_glfw_device ogl; + struct nk_context ctx; + struct nk_font_atlas atlas; + struct nk_vec2 fb_scale; + unsigned int text[NK_GLFW_TEXT_MAX]; + int text_len; + struct nk_vec2 scroll; + double last_button_click; + int is_double_click_down; + struct nk_vec2 double_click_pos; +} glfw; + +#ifdef __APPLE__ + #define NK_SHADER_VERSION "#version 150\n" +#else + #define NK_SHADER_VERSION "#version 300 es\n" +#endif + +NK_API void +nk_glfw3_device_create(void) +{ + GLint status; + static const GLchar *vertex_shader = + NK_SHADER_VERSION + "uniform mat4 ProjMtx;\n" + "in vec2 Position;\n" + "in vec2 TexCoord;\n" + "in vec4 Color;\n" + "out vec2 Frag_UV;\n" + "out vec4 Frag_Color;\n" + "void main() {\n" + " Frag_UV = TexCoord;\n" + " Frag_Color = Color;\n" + " gl_Position = ProjMtx * vec4(Position.xy, 0, 1);\n" + "}\n"; + static const GLchar *fragment_shader = + NK_SHADER_VERSION + "precision mediump float;\n" + "uniform sampler2D Texture;\n" + "in vec2 Frag_UV;\n" + "in vec4 Frag_Color;\n" + "out vec4 Out_Color;\n" + "void main(){\n" + " Out_Color = Frag_Color * texture(Texture, Frag_UV.st);\n" + "}\n"; + + struct nk_glfw_device *dev = &glfw.ogl; + nk_buffer_init_default(&dev->cmds); + dev->prog = glCreateProgram(); + dev->vert_shdr = glCreateShader(GL_VERTEX_SHADER); + dev->frag_shdr = glCreateShader(GL_FRAGMENT_SHADER); + glShaderSource(dev->vert_shdr, 1, &vertex_shader, 0); + glShaderSource(dev->frag_shdr, 1, &fragment_shader, 0); + glCompileShader(dev->vert_shdr); + glCompileShader(dev->frag_shdr); + glGetShaderiv(dev->vert_shdr, GL_COMPILE_STATUS, &status); + assert(status == GL_TRUE); + glGetShaderiv(dev->frag_shdr, GL_COMPILE_STATUS, &status); + assert(status == GL_TRUE); + glAttachShader(dev->prog, dev->vert_shdr); + glAttachShader(dev->prog, dev->frag_shdr); + glLinkProgram(dev->prog); + glGetProgramiv(dev->prog, GL_LINK_STATUS, &status); + assert(status == GL_TRUE); + + dev->uniform_tex = glGetUniformLocation(dev->prog, "Texture"); + dev->uniform_proj = glGetUniformLocation(dev->prog, "ProjMtx"); + dev->attrib_pos = glGetAttribLocation(dev->prog, "Position"); + dev->attrib_uv = glGetAttribLocation(dev->prog, "TexCoord"); + dev->attrib_col = glGetAttribLocation(dev->prog, "Color"); + + { + /* buffer setup */ + GLsizei vs = sizeof(struct nk_glfw_vertex); + size_t vp = offsetof(struct nk_glfw_vertex, position); + size_t vt = offsetof(struct nk_glfw_vertex, uv); + size_t vc = offsetof(struct nk_glfw_vertex, col); + + glGenBuffers(1, &dev->vbo); + glGenBuffers(1, &dev->ebo); + glGenVertexArrays(1, &dev->vao); + + glBindVertexArray(dev->vao); + glBindBuffer(GL_ARRAY_BUFFER, dev->vbo); + glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, dev->ebo); + + glEnableVertexAttribArray((GLuint)dev->attrib_pos); + glEnableVertexAttribArray((GLuint)dev->attrib_uv); + glEnableVertexAttribArray((GLuint)dev->attrib_col); + + glVertexAttribPointer((GLuint)dev->attrib_pos, 2, GL_FLOAT, GL_FALSE, vs, (void*)vp); + glVertexAttribPointer((GLuint)dev->attrib_uv, 2, GL_FLOAT, GL_FALSE, vs, (void*)vt); + glVertexAttribPointer((GLuint)dev->attrib_col, 4, GL_UNSIGNED_BYTE, GL_TRUE, vs, (void*)vc); + } + + glBindTexture(GL_TEXTURE_2D, 0); + glBindBuffer(GL_ARRAY_BUFFER, 0); + glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); + glBindVertexArray(0); +} + +NK_INTERN void +nk_glfw3_device_upload_atlas(const void *image, int width, int height) +{ + struct nk_glfw_device *dev = &glfw.ogl; + glGenTextures(1, &dev->font_tex); + glBindTexture(GL_TEXTURE_2D, dev->font_tex); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); + glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, (GLsizei)width, (GLsizei)height, 0, + GL_RGBA, GL_UNSIGNED_BYTE, image); +} + +NK_API void +nk_glfw3_device_destroy(void) +{ + struct nk_glfw_device *dev = &glfw.ogl; + glDetachShader(dev->prog, dev->vert_shdr); + glDetachShader(dev->prog, dev->frag_shdr); + glDeleteShader(dev->vert_shdr); + glDeleteShader(dev->frag_shdr); + glDeleteProgram(dev->prog); + glDeleteTextures(1, &dev->font_tex); + glDeleteBuffers(1, &dev->vbo); + glDeleteBuffers(1, &dev->ebo); + nk_buffer_free(&dev->cmds); +} + +NK_API void +nk_glfw3_render(enum nk_anti_aliasing AA, int max_vertex_buffer, int max_element_buffer) +{ + struct nk_glfw_device *dev = &glfw.ogl; + struct nk_buffer vbuf, ebuf; + GLfloat ortho[4][4] = { + {2.0f, 0.0f, 0.0f, 0.0f}, + {0.0f,-2.0f, 0.0f, 0.0f}, + {0.0f, 0.0f,-1.0f, 0.0f}, + {-1.0f,1.0f, 0.0f, 1.0f}, + }; + ortho[0][0] /= (GLfloat)glfw.width; + ortho[1][1] /= (GLfloat)glfw.height; + + /* setup global state */ + glEnable(GL_BLEND); + glBlendEquation(GL_FUNC_ADD); + glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); + glDisable(GL_CULL_FACE); + glDisable(GL_DEPTH_TEST); + glEnable(GL_SCISSOR_TEST); + glActiveTexture(GL_TEXTURE0); + + /* setup program */ + glUseProgram(dev->prog); + glUniform1i(dev->uniform_tex, 0); + glUniformMatrix4fv(dev->uniform_proj, 1, GL_FALSE, &ortho[0][0]); + glViewport(0,0,(GLsizei)glfw.display_width,(GLsizei)glfw.display_height); + { + /* convert from command queue into draw list and draw to screen */ + const struct nk_draw_command *cmd; + void *vertices, *elements; + const nk_draw_index *offset = NULL; + + /* allocate vertex and element buffer */ + glBindVertexArray(dev->vao); + glBindBuffer(GL_ARRAY_BUFFER, dev->vbo); + glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, dev->ebo); + + glBufferData(GL_ARRAY_BUFFER, max_vertex_buffer, NULL, GL_STREAM_DRAW); + glBufferData(GL_ELEMENT_ARRAY_BUFFER, max_element_buffer, NULL, GL_STREAM_DRAW); + + /* load draw vertices & elements directly into vertex + element buffer */ + vertices = glMapBuffer(GL_ARRAY_BUFFER, GL_WRITE_ONLY); + elements = glMapBuffer(GL_ELEMENT_ARRAY_BUFFER, GL_WRITE_ONLY); + { + /* fill convert configuration */ + struct nk_convert_config config; + static const struct nk_draw_vertex_layout_element vertex_layout[] = { + {NK_VERTEX_POSITION, NK_FORMAT_FLOAT, NK_OFFSETOF(struct nk_glfw_vertex, position)}, + {NK_VERTEX_TEXCOORD, NK_FORMAT_FLOAT, NK_OFFSETOF(struct nk_glfw_vertex, uv)}, + {NK_VERTEX_COLOR, NK_FORMAT_R8G8B8A8, NK_OFFSETOF(struct nk_glfw_vertex, col)}, + {NK_VERTEX_LAYOUT_END} + }; + NK_MEMSET(&config, 0, sizeof(config)); + config.vertex_layout = vertex_layout; + config.vertex_size = sizeof(struct nk_glfw_vertex); + config.vertex_alignment = NK_ALIGNOF(struct nk_glfw_vertex); + config.null = dev->null; + config.circle_segment_count = 22; + config.curve_segment_count = 22; + config.arc_segment_count = 22; + config.global_alpha = 1.0f; + config.shape_AA = AA; + config.line_AA = AA; + + /* setup buffers to load vertices and elements */ + nk_buffer_init_fixed(&vbuf, vertices, (size_t)max_vertex_buffer); + nk_buffer_init_fixed(&ebuf, elements, (size_t)max_element_buffer); + nk_convert(&glfw.ctx, &dev->cmds, &vbuf, &ebuf, &config); + } + glUnmapBuffer(GL_ARRAY_BUFFER); + glUnmapBuffer(GL_ELEMENT_ARRAY_BUFFER); + + /* iterate over and execute each draw command */ + nk_draw_foreach(cmd, &glfw.ctx, &dev->cmds) + { + if (!cmd->elem_count) continue; + glBindTexture(GL_TEXTURE_2D, (GLuint)cmd->texture.id); + glScissor( + (GLint)(cmd->clip_rect.x * glfw.fb_scale.x), + (GLint)((glfw.height - (GLint)(cmd->clip_rect.y + cmd->clip_rect.h)) * glfw.fb_scale.y), + (GLint)(cmd->clip_rect.w * glfw.fb_scale.x), + (GLint)(cmd->clip_rect.h * glfw.fb_scale.y)); + glDrawElements(GL_TRIANGLES, (GLsizei)cmd->elem_count, GL_UNSIGNED_SHORT, offset); + offset += cmd->elem_count; + } + nk_clear(&glfw.ctx); + } + + /* default OpenGL state */ + glUseProgram(0); + glBindBuffer(GL_ARRAY_BUFFER, 0); + glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); + glBindVertexArray(0); + glDisable(GL_BLEND); + glDisable(GL_SCISSOR_TEST); +} + +NK_API void +nk_glfw3_char_callback(GLFWwindow *win, unsigned int codepoint) +{ + (void)win; + if (glfw.text_len < NK_GLFW_TEXT_MAX) + glfw.text[glfw.text_len++] = codepoint; +} + +NK_API void +nk_gflw3_scroll_callback(GLFWwindow *win, double xoff, double yoff) +{ + (void)win; (void)xoff; + glfw.scroll.x += (float)xoff; + glfw.scroll.y += (float)yoff; +} + +NK_API void +nk_glfw3_mouse_button_callback(GLFWwindow* window, int button, int action, int mods) +{ + double x, y; + if (button != GLFW_MOUSE_BUTTON_LEFT) return; + glfwGetCursorPos(window, &x, &y); + if (action == GLFW_PRESS) { + double dt = glfwGetTime() - glfw.last_button_click; + if (dt > NK_GLFW_DOUBLE_CLICK_LO && dt < NK_GLFW_DOUBLE_CLICK_HI) { + glfw.is_double_click_down = nk_true; + glfw.double_click_pos = nk_vec2((float)x, (float)y); + } + glfw.last_button_click = glfwGetTime(); + } else glfw.is_double_click_down = nk_false; +} + +NK_INTERN void +nk_glfw3_clipboard_paste(nk_handle usr, struct nk_text_edit *edit) +{ + const char *text = glfwGetClipboardString(glfw.win); + if (text) nk_textedit_paste(edit, text, nk_strlen(text)); + (void)usr; +} + +NK_INTERN void +nk_glfw3_clipboard_copy(nk_handle usr, const char *text, int len) +{ + char *str = 0; + (void)usr; + if (!len) return; + str = (char*)malloc((size_t)len+1); + if (!str) return; + memcpy(str, text, (size_t)len); + str[len] = '\0'; + glfwSetClipboardString(glfw.win, str); + free(str); +} + +NK_API struct nk_context* +nk_glfw3_init(GLFWwindow *win, enum nk_glfw_init_state init_state) +{ + glfw.win = win; + if (init_state == NK_GLFW3_INSTALL_CALLBACKS) { + glfwSetScrollCallback(win, nk_gflw3_scroll_callback); + glfwSetCharCallback(win, nk_glfw3_char_callback); + glfwSetMouseButtonCallback(win, nk_glfw3_mouse_button_callback); + } + nk_init_default(&glfw.ctx, 0); + glfw.ctx.clip.copy = nk_glfw3_clipboard_copy; + glfw.ctx.clip.paste = nk_glfw3_clipboard_paste; + glfw.ctx.clip.userdata = nk_handle_ptr(0); + glfw.last_button_click = 0; + nk_glfw3_device_create(); + + glfw.is_double_click_down = nk_false; + glfw.double_click_pos = nk_vec2(0, 0); + + return &glfw.ctx; +} + +NK_API void +nk_glfw3_font_stash_begin(struct nk_font_atlas **atlas) +{ + nk_font_atlas_init_default(&glfw.atlas); + nk_font_atlas_begin(&glfw.atlas); + *atlas = &glfw.atlas; +} + +NK_API void +nk_glfw3_font_stash_end(void) +{ + const void *image; int w, h; + image = nk_font_atlas_bake(&glfw.atlas, &w, &h, NK_FONT_ATLAS_RGBA32); + nk_glfw3_device_upload_atlas(image, w, h); + nk_font_atlas_end(&glfw.atlas, nk_handle_id((int)glfw.ogl.font_tex), &glfw.ogl.null); + if (glfw.atlas.default_font) + nk_style_set_font(&glfw.ctx, &glfw.atlas.default_font->handle); +} + +NK_API void +nk_glfw3_new_frame(void) +{ + int i; + double x, y; + struct nk_context *ctx = &glfw.ctx; + struct GLFWwindow *win = glfw.win; + + glfwGetWindowSize(win, &glfw.width, &glfw.height); + glfwGetFramebufferSize(win, &glfw.display_width, &glfw.display_height); + glfw.fb_scale.x = (float)glfw.display_width/(float)glfw.width; + glfw.fb_scale.y = (float)glfw.display_height/(float)glfw.height; + + nk_input_begin(ctx); + for (i = 0; i < glfw.text_len; ++i) + nk_input_unicode(ctx, glfw.text[i]); + +#ifdef NK_GLFW_GL3_MOUSE_GRABBING + /* optional grabbing behavior */ + if (ctx->input.mouse.grab) + glfwSetInputMode(glfw.win, GLFW_CURSOR, GLFW_CURSOR_HIDDEN); + else if (ctx->input.mouse.ungrab) + glfwSetInputMode(glfw.win, GLFW_CURSOR, GLFW_CURSOR_NORMAL); +#endif + + nk_input_key(ctx, NK_KEY_DEL, glfwGetKey(win, GLFW_KEY_DELETE) == GLFW_PRESS); + nk_input_key(ctx, NK_KEY_ENTER, glfwGetKey(win, GLFW_KEY_ENTER) == GLFW_PRESS); + nk_input_key(ctx, NK_KEY_TAB, glfwGetKey(win, GLFW_KEY_TAB) == GLFW_PRESS); + nk_input_key(ctx, NK_KEY_BACKSPACE, glfwGetKey(win, GLFW_KEY_BACKSPACE) == GLFW_PRESS); + nk_input_key(ctx, NK_KEY_UP, glfwGetKey(win, GLFW_KEY_UP) == GLFW_PRESS); + nk_input_key(ctx, NK_KEY_DOWN, glfwGetKey(win, GLFW_KEY_DOWN) == GLFW_PRESS); + nk_input_key(ctx, NK_KEY_TEXT_START, glfwGetKey(win, GLFW_KEY_HOME) == GLFW_PRESS); + nk_input_key(ctx, NK_KEY_TEXT_END, glfwGetKey(win, GLFW_KEY_END) == GLFW_PRESS); + nk_input_key(ctx, NK_KEY_SCROLL_START, glfwGetKey(win, GLFW_KEY_HOME) == GLFW_PRESS); + nk_input_key(ctx, NK_KEY_SCROLL_END, glfwGetKey(win, GLFW_KEY_END) == GLFW_PRESS); + nk_input_key(ctx, NK_KEY_SCROLL_DOWN, glfwGetKey(win, GLFW_KEY_PAGE_DOWN) == GLFW_PRESS); + nk_input_key(ctx, NK_KEY_SCROLL_UP, glfwGetKey(win, GLFW_KEY_PAGE_UP) == GLFW_PRESS); + nk_input_key(ctx, NK_KEY_SHIFT, glfwGetKey(win, GLFW_KEY_LEFT_SHIFT) == GLFW_PRESS|| + glfwGetKey(win, GLFW_KEY_RIGHT_SHIFT) == GLFW_PRESS); + + if (glfwGetKey(win, GLFW_KEY_LEFT_CONTROL) == GLFW_PRESS || + glfwGetKey(win, GLFW_KEY_RIGHT_CONTROL) == GLFW_PRESS) { + nk_input_key(ctx, NK_KEY_COPY, glfwGetKey(win, GLFW_KEY_C) == GLFW_PRESS); + nk_input_key(ctx, NK_KEY_PASTE, glfwGetKey(win, GLFW_KEY_V) == GLFW_PRESS); + nk_input_key(ctx, NK_KEY_CUT, glfwGetKey(win, GLFW_KEY_X) == GLFW_PRESS); + nk_input_key(ctx, NK_KEY_TEXT_UNDO, glfwGetKey(win, GLFW_KEY_Z) == GLFW_PRESS); + nk_input_key(ctx, NK_KEY_TEXT_REDO, glfwGetKey(win, GLFW_KEY_R) == GLFW_PRESS); + nk_input_key(ctx, NK_KEY_TEXT_WORD_LEFT, glfwGetKey(win, GLFW_KEY_LEFT) == GLFW_PRESS); + nk_input_key(ctx, NK_KEY_TEXT_WORD_RIGHT, glfwGetKey(win, GLFW_KEY_RIGHT) == GLFW_PRESS); + nk_input_key(ctx, NK_KEY_TEXT_LINE_START, glfwGetKey(win, GLFW_KEY_B) == GLFW_PRESS); + nk_input_key(ctx, NK_KEY_TEXT_LINE_END, glfwGetKey(win, GLFW_KEY_E) == GLFW_PRESS); + } else { + nk_input_key(ctx, NK_KEY_LEFT, glfwGetKey(win, GLFW_KEY_LEFT) == GLFW_PRESS); + nk_input_key(ctx, NK_KEY_RIGHT, glfwGetKey(win, GLFW_KEY_RIGHT) == GLFW_PRESS); + nk_input_key(ctx, NK_KEY_COPY, 0); + nk_input_key(ctx, NK_KEY_PASTE, 0); + nk_input_key(ctx, NK_KEY_CUT, 0); + nk_input_key(ctx, NK_KEY_SHIFT, 0); + } + + glfwGetCursorPos(win, &x, &y); + nk_input_motion(ctx, (int)x, (int)y); +#ifdef NK_GLFW_GL3_MOUSE_GRABBING + if (ctx->input.mouse.grabbed) { + glfwSetCursorPos(glfw.win, ctx->input.mouse.prev.x, ctx->input.mouse.prev.y); + ctx->input.mouse.pos.x = ctx->input.mouse.prev.x; + ctx->input.mouse.pos.y = ctx->input.mouse.prev.y; + } +#endif + nk_input_button(ctx, NK_BUTTON_LEFT, (int)x, (int)y, glfwGetMouseButton(win, GLFW_MOUSE_BUTTON_LEFT) == GLFW_PRESS); + nk_input_button(ctx, NK_BUTTON_MIDDLE, (int)x, (int)y, glfwGetMouseButton(win, GLFW_MOUSE_BUTTON_MIDDLE) == GLFW_PRESS); + nk_input_button(ctx, NK_BUTTON_RIGHT, (int)x, (int)y, glfwGetMouseButton(win, GLFW_MOUSE_BUTTON_RIGHT) == GLFW_PRESS); + nk_input_button(ctx, NK_BUTTON_DOUBLE, (int)glfw.double_click_pos.x, (int)glfw.double_click_pos.y, glfw.is_double_click_down); + nk_input_scroll(ctx, glfw.scroll); + nk_input_end(&glfw.ctx); + glfw.text_len = 0; + glfw.scroll = nk_vec2(0,0); +} + +NK_API +void nk_glfw3_shutdown(void) +{ + nk_font_atlas_clear(&glfw.atlas); + nk_free(&glfw.ctx); + nk_glfw3_device_destroy(); + memset(&glfw, 0, sizeof(glfw)); +} + +#endif diff --git a/src/server/server.cpp b/src/server/server.cpp new file mode 100644 index 0000000..8987f28 --- /dev/null +++ b/src/server/server.cpp @@ -0,0 +1,46 @@ +#include +#include + +#include +#include +#include +#include + +#define SERVER_UDP_PORT 2800 +#define UDP_PACKET_SIZE 500 +#define UDP_BUFFER_SIZE 10000 + +int main(int argc, char** argv) { + + int fd; + if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) { + perror("cannot create socket"); + return -1; + } + + struct sockaddr_in sin; + memset(&sin, 0, sizeof(sin)); + sin.sin_family = AF_INET; + sin.sin_addr.s_addr = htonl(INADDR_ANY); + sin.sin_port = htons(SERVER_UDP_PORT); + + if (bind(fd, (struct sockaddr *) &sin, sizeof(sin)) < 0) { + perror("bind failed"); + return -1; + } + + unsigned char buf[UDP_PACKET_SIZE]; + int recvlen; + struct sockaddr_in remote_address; + socklen_t addrlen = sizeof(remote_address); + for (;;) { + printf("waiting on port %d\n", SERVER_UDP_PORT); + recvlen = recvfrom(fd, buf, UDP_PACKET_SIZE, 0, + (struct sockaddr *) &remote_address, + &addrlen); + if (recvlen > 0) { + buf[recvlen] = 0; + printf("received message: \"%s\"\n", buf); + } + } +} diff --git a/src/test.cpp b/src/test.cpp new file mode 100644 index 0000000..2b7e03d --- /dev/null +++ b/src/test.cpp @@ -0,0 +1,38 @@ +#include +#include +#include +#include + + +static void RenderSceneCB() +{ + glClear(GL_COLOR_BUFFER_BIT); + glutSwapBuffers(); +} + +static void InitializeGlutCallbacks() +{ + glutDisplayFunc(RenderSceneCB); +} + +int main(int argc, char** argv) +{ + glutInit(&argc, argv); + glutInitDisplayMode(GLUT_DOUBLE|GLUT_RGBA); + glutInitWindowSize(1024, 768); + glutInitWindowPosition(100, 100); + glutCreateWindow("Tutorial 01"); + InitializeGlutCallbacks(); + + GLenum res = glewInit(); + if (res != GLEW_OK) + { + fprintf(stderr, "Error: '%s'\n", glewGetErrorString(res)); + return 1; + } + + + glClearColor(0.0f, 0.0f, 0.0f, 0.0f); + glutMainLoop(); + return 0; +}