initial commit

1 files changed, 187 insertions, 0 deletions

diff --git a/mesh_loading_test/mesh_loading_test.c b/mesh_loading_test/mesh_loading_test.c
new file mode 100644
index 0000000..5284dd2
--- /dev/null
+++ b/mesh_loading_test/mesh_loading_test.c
@@ -0,0 +1,187 @@
+#include "GL/glew.h"
+#include "GLFW/glfw3.h"
+
+#include "pwyazh.h"
+
+#include "common.h"
+
+#define WIDTH 1024
+#define HEIGHT 768
+
+static Input global_input;
+
+void
+key_callback(GLFWwindow* window, int key, int scancode, int action, int mods)
+{
+    switch (action)
+    {
+        case GLFW_PRESS: {
+            switch (key)
+            {
+                case GLFW_KEY_D: {
+                    global_input.move_right.state = KeyState_PRESS;
+                } break;
+                case GLFW_KEY_W: {
+                    global_input.move_forward.state = KeyState_PRESS;
+                } break;
+                case GLFW_KEY_A: {
+                    global_input.move_left.state = KeyState_PRESS;
+                } break;
+                case GLFW_KEY_S: {
+                    global_input.move_backward.state = KeyState_PRESS;
+                } break;
+                case GLFW_KEY_Q: {
+                    global_input.move_down.state = KeyState_PRESS;
+                } break;
+                case GLFW_KEY_E: {
+                    global_input.move_up.state = KeyState_PRESS;
+                } break;
+                case GLFW_KEY_SPACE: {
+                    global_input.jump.state = KeyState_PRESS;
+                } break;
+            }
+        } break;
+        
+        case GLFW_RELEASE: {
+            switch (key)
+            {
+                case GLFW_KEY_D: {
+                    global_input.move_right.state = KeyState_RELEASE;
+                } break;
+                case GLFW_KEY_W: {
+                    global_input.move_forward.state = KeyState_RELEASE;
+                } break;
+                case GLFW_KEY_A: {
+                    global_input.move_left.state = KeyState_RELEASE;
+                } break;
+                case GLFW_KEY_S: {
+                    global_input.move_backward.state = KeyState_RELEASE;
+                } break;
+                case GLFW_KEY_Q: {
+                    global_input.move_down.state = KeyState_RELEASE;
+                } break;
+                case GLFW_KEY_E: {
+                    global_input.move_up.state = KeyState_RELEASE;
+                } break;
+                case GLFW_KEY_SPACE: {
+                    global_input.jump.state = KeyState_RELEASE;
+                } break;
+            }
+        } break;
+    }
+}
+
+int
+main(void)
+{
+    GLFWwindow *window;
+    
+    if (glfwInit() == GLFW_FALSE)
+    {
+        fprintf(stderr, "[ERROR] Failed to initialize glfw.\n");
+        return(1);
+    }
+    
+    glfwWindowHint(GLFW_RESIZABLE, 0);
+    glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
+    glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
+    glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
+    window = glfwCreateWindow(WIDTH, HEIGHT, "depth testing", 0, 0);
+    if (!window)
+    {
+        fprintf(stderr, "[ERROR] Failed to create window.\n");
+        glfwTerminate();
+        return(1);
+    }
+    
+    glfwMakeContextCurrent(window);
+    glfwSetKeyCallback(window, key_callback);
+    
+    if (glewInit() != GLEW_OK)
+    {
+        fprintf(stderr, "[ERROR] Failed to initialize glew.\n");
+        glfwTerminate();
+        return(1);
+    }
+    
+    U32 shader = create_shader_program("shaders/default.vs", "shaders/default.fs");
+    
+    Arena *arena = arena_alloc(Megabytes(512));
+    
+    Mesh *what_cube_mesh = mesh_load_obj(arena, "what_cube/what_cube.obj");
+    U32 what_cube_texture = load_texture("what_cube/pryazha.jpg");
+    
+    F32 target_fps = 60.0f;
+    F32 target_spf = 1.0f/target_fps;
+    F32 dt = 0.0f;
+    F32 last_time = glfwGetTime();
+    F32 time = last_time;
+    
+    MAT4 projection, view, model;
+    projection = perspective(90.0f, (F32)WIDTH/(F32)HEIGHT, 0.1f, 100.0f);
+    model = mat4_identity();
+    
+    V3F camera_pos = v3f(0.0f, 0.0f, 3.0f);
+    
+    glEnable(GL_DEPTH_TEST);
+    
+    while (!glfwWindowShouldClose(window))
+    {
+        glfwPollEvents();
+        
+        /* NOTE(pryazha): Update */
+        V3F f = v3f_norm(v3f_sub(v3f(0.0f, 0.0f, 0.0f), camera_pos));
+        V3F l = v3f_norm(v3f_cross(v3f(0.0f, 1.0f, 0.0f), f));
+        V3F u = v3f_cross(f, l);
+        
+        V3F dp = v3f_zero();
+        F32 speed = 2.0f;
+        if (key_is_pressed(global_input.move_right))
+            dp = v3f_sub(dp, l);
+        if (key_is_pressed(global_input.move_forward))
+            dp = v3f_add(dp, f);
+        if (key_is_pressed(global_input.move_left))
+            dp = v3f_add(dp, l);
+        if (key_is_pressed(global_input.move_backward))
+            dp = v3f_sub(dp, f);
+        if (key_is_pressed(global_input.move_up))
+            dp = v3f_add(dp, u);
+        if (key_is_pressed(global_input.move_down))
+            dp = v3f_sub(dp, u);
+        
+        camera_pos = v3f_add(camera_pos, v3f_scalef(dp, speed*dt));
+        
+        view = look_at(camera_pos, v3f_zero(), v3f(0.0f, 1.0f, 0.0f));
+        
+        input_update_last_state(&global_input);
+        
+        /* NOTE(pryazha): Render */
+        glClearColor(0.15f, 0.15f, 0.15f, 1.0f);
+        glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+        
+        glUseProgram(shader);
+        shader_set_mat4fv(shader, "projection", projection);
+        shader_set_mat4fv(shader, "view", view);
+        shader_set_mat4fv(shader, "model", model);
+        glBindTexture(GL_TEXTURE_2D, what_cube_texture);
+        mesh_draw(what_cube_mesh);
+        
+        glfwSwapBuffers(window);
+        
+        F32 elapsed = glfwGetTime()-last_time;
+        if (elapsed < target_spf)
+        {
+            U32 sleep_time = (U32)(target_spf-elapsed);
+            if (sleep_time > 0)
+                sleep(sleep_time);
+        }
+        F32 current_time = glfwGetTime();
+        dt = current_time-last_time;
+        time += dt;
+        last_time = current_time;
+    }
+    
+    arena_release(arena);
+    glfwTerminate();
+    return(0);
+}