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-rw-r--r--CMakeLists.txt2
-rw-r--r--demo.c105
-rw-r--r--include/honey.h17
-rw-r--r--src/honey.c66
-rw-r--r--src/honey_setup.c28
-rw-r--r--src/run_callbacks.c3
6 files changed, 141 insertions, 80 deletions
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8bf34bb..c78eafa 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -9,7 +9,7 @@ add_executable(honey_engine_demo demo.c)
set(CMAKE_C_FLAGS "-g")
-add_library(honey src/honey_setup.c src/texture.c src/shader.c src/mesh.c)
+add_library(honey src/honey.c src/texture.c src/shader.c src/mesh.c)
add_library(glad src/glad.c)
add_library(stb_image src/stb_image.c)
diff --git a/demo.c b/demo.c
index 08c11fb..94fdd66 100644
--- a/demo.c
+++ b/demo.c
@@ -1,5 +1,7 @@
#include "include/honey.h"
+honey_window window;
+
unsigned int screen_width = 640;
unsigned int screen_height = 480;
@@ -13,6 +15,13 @@ float cameraPitch = 0;
float cameraYaw = 0;
const float cameraMouseSensitivity = 0.1;
+honey_mesh cube;
+honey_shader shader;
+honey_texture container;
+honey_texture happy_face;
+
+mat4 model, view, projection;
+
bool wireframe = false;
bool fKeyDown = false;
@@ -56,7 +65,11 @@ void mouseCallback(GLFWwindow* window, double x, double y) {
/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
-void processInput(GLFWwindow* window, float dt) {
+void update(float dt) {
+ glfwPollEvents();
+
+ glm_rotate_x(model, glm_rad(10*dt), model);
+
if (glfwGetKey(window, GLFW_KEY_ESCAPE) == GLFW_PRESS) {
glfwSetWindowShouldClose(window, true);
}
@@ -96,27 +109,57 @@ void processInput(GLFWwindow* window, float dt) {
}
}
-/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
+/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
+
+void draw() {
+ glClearColor(0.4f, 0.4f, 0.4f, 1.0);
+ glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+ if (wireframe) {
+ glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
+ }
+ else {
+ glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+ }
+
+ glm_perspective_default(((float)screen_width)/screen_height, projection);
+ honey_shader_set_matrix_4fv(shader, "projection", (float*) projection);
+
+ vec3 cameraDirection;
+ glm_vec3_add(cameraPosition, cameraFacing, cameraDirection);
+ glm_lookat(cameraPosition, cameraDirection, cameraUp, view);
+ honey_shader_set_matrix_4fv(shader, "view", (float*) view);
+
+ honey_shader_set_matrix_4fv(shader, "model", (float*) model);
+
+ glActiveTexture(GL_TEXTURE0);
+ glBindTexture(GL_TEXTURE_2D, container.texture_id);
+ glActiveTexture(GL_TEXTURE1);
+ glBindTexture(GL_TEXTURE_2D, happy_face.texture_id);
+
+ honey_mesh_draw(cube, shader);
+
+ glfwSwapBuffers(window);
+}
+
+/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
int main() {
- honey_window window = honey_setup(screen_width, screen_height, "hello, world!");
+ window = honey_setup(screen_width, screen_height, "hello, world!");
honey_set_resize_callback(window, framebufferResizeCallback);
honey_set_mouse_move_callback(window, mouseCallback);
- /* load box texture */
- honey_texture box;
- if (honey_texture_new(&box, "container.jpg", false) != TEXTURE_OK) {
+ /* load container texture */
+ if (honey_texture_new(&container, "container.jpg", false) != TEXTURE_OK) {
return 1;
}
/* load happy face texture */
- honey_texture happy_face;
if (honey_texture_new(&happy_face, "happy.png", true) != TEXTURE_OK) {
return 1;
}
- honey_shader shader;
if (honey_shader_load(&shader, "demo.vs", "demo.fs") != SHADER_OK) {
return 1;
}
@@ -146,7 +189,6 @@ int main() {
0, 1, 4,
1, 4, 5 };
- honey_mesh cube;
unsigned int attribute_sizes[] = { 3, 3, 2 }; /* position, color, texture coordinate */
enum honey_mesh_result result = honey_mesh_new(&cube,
vertices, 8, 3, attribute_sizes,
@@ -160,7 +202,6 @@ int main() {
honey_shader_set_int(shader, "boxTexture", 0);
honey_shader_set_int(shader, "happyTexture", 1);
- mat4 model, view, projection;
glm_mat4_identity(model);
glm_rotate_x(model, glm_rad(-55), model);
honey_shader_set_matrix_4fv(shader, "model", (float*) model);
@@ -177,48 +218,10 @@ int main() {
/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
- float prevTime = 0;
- float currentTime = 0;
- float dt = 0;
+ honey_set_update_callback(&update);
+ honey_set_draw_callback(&draw);
- while(!glfwWindowShouldClose(window)) {
- currentTime = (float) glfwGetTime();
- dt = currentTime - prevTime;
- prevTime = currentTime;
-
- processInput(window, dt);
-
- glClearColor(0.4f, 0.4f, 0.4f, 1.0);
- glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-
- if (wireframe) {
- glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
- }
- else {
- glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
- }
-
- glm_perspective_default(((float)screen_width)/screen_height, projection);
- honey_shader_set_matrix_4fv(shader, "projection", (float*) projection);
-
- vec3 cameraDirection;
- glm_vec3_add(cameraPosition, cameraFacing, cameraDirection);
- glm_lookat(cameraPosition, cameraDirection, cameraUp, view);
- honey_shader_set_matrix_4fv(shader, "view", (float*) view);
-
- glm_rotate_x(model, glm_rad(10*dt), model);
- honey_shader_set_matrix_4fv(shader, "model", (float*) model);
-
- glActiveTexture(GL_TEXTURE0);
- glBindTexture(GL_TEXTURE_2D, box.texture_id);
- glActiveTexture(GL_TEXTURE1);
- glBindTexture(GL_TEXTURE_2D, happy_face.texture_id);
-
- honey_mesh_draw(cube, shader);
-
- glfwSwapBuffers(window);
- glfwPollEvents();
- }
+ honey_run(window);
honey_mesh_delete(cube);
honey_shader_delete(shader);
diff --git a/include/honey.h b/include/honey.h
index 9b048c0..7ae7789 100644
--- a/include/honey.h
+++ b/include/honey.h
@@ -1,6 +1,7 @@
#ifndef HONEY_ENGINE_H
#define HONEY_ENGINE_H
+/** @file Defines the basic loading and callback functions. */
#include "common.h"
#include "mesh.h"
#include "shader.h"
@@ -8,8 +9,24 @@
typedef GLFWwindow* honey_window;
+/** @brief Initialize Honey.
+ *
+ * @param[in] screen_width The desired width of the screen in pixels
+ * @param[in] screen_height The desired height of the screen in pixels
+ * @param[in] window_title Title to use for the window.
+ */
honey_window honey_setup(int screen_width, int screen_height, char* window_title);
+static void (*honey_update_callback)(float dt);
+static void (*honey_draw_callback)();
+static float honey_draw_dt = 0.16;
+
+void honey_set_update_callback(void (*update_callback)(float));
+void honey_set_draw_callback(void (*draw_callback)());
+void honey_set_fps(unsigned int);
+
+void honey_run(honey_window window);
+
#define honey_set_resize_callback glfwSetFramebufferSizeCallback
#define honey_set_mouse_move_callback glfwSetCursorPosCallback
diff --git a/src/honey.c b/src/honey.c
new file mode 100644
index 0000000..c55ddc2
--- /dev/null
+++ b/src/honey.c
@@ -0,0 +1,66 @@
+#include "include/honey.h"
+
+static void default_honey_update_callback(float dt) {}
+static void default_honey_draw_callback() {}
+
+honey_window honey_setup(int screen_width, int screen_height, char* window_title) {
+ honey_update_callback = &default_honey_update_callback;
+ honey_draw_callback = &default_honey_draw_callback;
+
+ glfwInit();
+ glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
+ glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
+ glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
+
+ honey_window window = glfwCreateWindow(screen_width, screen_height, window_title, NULL, NULL);
+ if (window == NULL) {
+ fprintf(stderr, "ERROR: failed to create window!\n");
+ glfwTerminate();
+ return NULL;
+ }
+
+ glfwMakeContextCurrent(window);
+ glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_DISABLED);
+
+ if (!gladLoadGLLoader((GLADloadproc) glfwGetProcAddress)) {
+ fprintf(stderr, "ERROR: failed to initialize GLAD!\n");
+ glfwTerminate();
+ return NULL;
+ }
+
+ return window;
+}
+
+/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
+
+void honey_set_update_callback(void (*update_callback)(float)) {
+ honey_update_callback = update_callback;
+}
+
+void honey_set_draw_callback(void (*draw_callback)()) {
+ honey_draw_callback = draw_callback;
+}
+
+void honey_set_fps(unsigned int fps) {
+ honey_draw_dt = 1.0f / fps;
+}
+
+/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
+
+void honey_run(honey_window window) {
+ float prevTime = 0;
+ float currentTime = 0;
+ float dt;
+ float draw_dt = 0;
+
+ while(!glfwWindowShouldClose(window)) {
+ currentTime = (float) glfwGetTime();
+ dt = currentTime - prevTime;
+ prevTime = currentTime;
+
+ honey_update_callback(dt);
+ honey_draw_callback();
+ }
+}
+
+
diff --git a/src/honey_setup.c b/src/honey_setup.c
deleted file mode 100644
index 247c325..0000000
--- a/src/honey_setup.c
+++ /dev/null
@@ -1,28 +0,0 @@
-#include "include/honey.h"
-
-honey_window honey_setup(int screen_width, int screen_height, char* window_title) {
- glfwInit();
- glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
- glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
- glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
-
- honey_window window = glfwCreateWindow(screen_width, screen_height, window_title, NULL, NULL);
- if (window == NULL) {
- fprintf(stderr, "ERROR: failed to create window!\n");
- glfwTerminate();
- return NULL;
- }
-
- glfwMakeContextCurrent(window);
- glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_DISABLED);
-
- if (!gladLoadGLLoader((GLADloadproc) glfwGetProcAddress)) {
- fprintf(stderr, "ERROR: failed to initialize GLAD!\n");
- glfwTerminate();
- return NULL;
- }
-
- return window;
-}
-
-
diff --git a/src/run_callbacks.c b/src/run_callbacks.c
new file mode 100644
index 0000000..f6b1379
--- /dev/null
+++ b/src/run_callbacks.c
@@ -0,0 +1,3 @@
+#include "honey.h"
+
+
generated by cgit v1.2.1 (git 2.18.0) at 2024-12-23 19:16:43 +0000