Add base mouse capturing

src/renderer.cpp

@@ -1,5 +1,6 @@
 #include "renderer.h"
 #include "logger.h"
+#include <imgui/imgui_impl_glfw.h>
 
 
 bool init_renderer(Renderer *renderer, u32 width, u32 height) {
@@ -169,3 +170,65 @@ void handle_key_events(Renderer *renderer, s32 key, s32 scancode, s32 action, s3
   }
 }
 
+void handle_mouse_position_events(Renderer *renderer, f64 x_pos, f64 y_pos) {
+  ImGuiIO& io = ImGui::GetIO();
+  io.AddMousePosEvent((f32)x_pos, (f32)y_pos);
+
+  if (io.WantCaptureMouse) {
+    return;
+  }
+
+  s32 mouse_move_rel_x = static_cast<s32>(x_pos) - renderer->mouse_x_position;
+  s32 mouse_move_rel_y = static_cast<s32>(y_pos) - renderer->mouse_y_position;
+
+  if (renderer->mouse_lock) {
+    renderer->render_data.view_azimuth += mouse_move_rel_x / 10.0;
+
+    if (renderer->render_data.view_azimuth < 0.0) {
+      renderer->render_data.view_azimuth += 360.0;
+    }
+
+    if (renderer->render_data.view_azimuth >= 360.0) {
+      renderer->render_data.view_azimuth -= 360.0;
+    }
+
+    renderer->render_data.view_elevation -= mouse_move_rel_y / 10.0;
+
+    if (renderer->render_data.view_elevation > 89.0) {
+      renderer->render_data.view_elevation = 89.0;
+    }
+
+    if (renderer->render_data.view_elevation < -89.0) {
+      renderer->render_data.view_elevation = -89.0;
+    }
+  }
+
+  renderer->mouse_x_position = static_cast<s32>(x_pos);
+  renderer->mouse_y_position = static_cast<s32>(y_pos);
+}
+
+void handle_mouse_button_events(Renderer *renderer, s32 button, s32 action, s32 mods) {
+  ImGuiIO& io = ImGui::GetIO();
+  if (button >= 0 && button < ImGuiMouseButton_COUNT) {
+    io.AddMouseButtonEvent(button, action == GLFW_PRESS);
+  }
+
+  if (io.WantCaptureMouse) {
+    return;
+  }
+
+  if (button == GLFW_MOUSE_BUTTON_RIGHT && action == GLFW_PRESS) {
+    renderer->mouse_lock = !renderer->mouse_lock;
+
+    if (renderer->mouse_lock) {
+      glfwSetInputMode(renderer->render_data.glfw_window, GLFW_CURSOR, GLFW_CURSOR_DISABLED);
+
+      if (glfwRawMouseMotionSupported()) {
+        glfwSetInputMode(renderer->render_data.glfw_window, GLFW_RAW_MOUSE_MOTION, GLFW_TRUE);
+      }
+    } else {
+      glfwSetInputMode(renderer->render_data.glfw_window, GLFW_CURSOR, GLFW_CURSOR_NORMAL);
+    }
+  }
+}
+

src/renderer.h

@@ -26,6 +26,10 @@ struct Renderer {
   Matrix4 projection_matrix = Matrix4(1.0f);
   User_Interface user_interface;
   Render_Data render_data;
+  Camera camera;
+  bool mouse_lock = false;
+  s32 mouse_x_position = 0;
+  s32 mouse_y_position = 0;
   Timer timer;
 };
 
@@ -35,4 +39,8 @@ void set_renderer_size(Renderer *renderer, u32 width, u32 height);
 void draw_renderer(Renderer *renderer);
 void upload_renderer_data(Renderer *renderer, Mesh *vertex_data);
 void cleanup_renderer(Renderer *renderer);
+
+// Event handling
 void handle_key_events(Renderer *renderer, s32 key, s32 scancode, s32 action, s32 mods);
+void handle_mouse_position_events(Renderer *renderer, f64 x_pos, f64 y_pos);
+void handle_mouse_button_events(Renderer *renderer, s32 button, s32 action, s32 mods);

src/window.cpp

@@ -83,49 +83,6 @@ void cleanup(Window *window) {
   glfwTerminate();
 }
 
-void handle_mouse_position_events(GLFWwindow *gl_window, f64 x_pos, f64 y_pos) {
-  Window *window = static_cast<Window *>(glfwGetWindowUserPointer(gl_window));
-  log(1, "%s: Mouse is at position %lf/%lf\n", __FUNCTION__, x_pos, y_pos);
-}
-
-void handle_mouse_button_events(GLFWwindow *gl_window, s32 button, s32 action, s32 mods) {
-  Window *window = static_cast<Window *>(glfwGetWindowUserPointer(gl_window));
-
-  string action_name;
-  switch(action) {
-    case GLFW_PRESS:
-      action_name = "pressed";
-      break;
-    case GLFW_RELEASE:
-      action_name = "released";
-      break;
-    case GLFW_REPEAT:
-      action_name = "repeated";
-      break;
-    default:
-      action_name = "invalid";
-      break;
-  }
-
-  string mouse_button_name;
-  switch(button) {
-    case GLFW_MOUSE_BUTTON_LEFT:
-      mouse_button_name = "left";
-      break;
-    case GLFW_MOUSE_BUTTON_RIGHT:
-      mouse_button_name = "right";
-      break;
-    case GLFW_MOUSE_BUTTON_MIDDLE:
-      mouse_button_name = "middle";
-      break;
-    default:
-      mouse_button_name = "other";
-      break;
-  }
-
-  log(1, "%s: %s mouse button (%i) %s\n", __FUNCTION__, mouse_button_name.c_str(), button, action_name.c_str());
-}
-
 void handle_window_resize_events(GLFWwindow *gl_window, s32 width, s32 height) {
   Window *window = static_cast<Window *>(glfwGetWindowUserPointer(gl_window));
 

src/window.h

@@ -13,7 +13,5 @@ bool init_window(Window *window, u32 width, u32 height, string title);
 void main_loop(Window *window);
 void cleanup(Window *window);
 void handle_close(GLFWwindow *gl_window);
-void handle_mouse_position_events(GLFWwindow *gl_window, f64 x_pos, f64 y_pos);
-void handle_mouse_button_events(GLFWwindow *gl_window, s32 button, s32 action, s32 mods);
 void handle_window_resize_events(GLFWwindow *gl_window, s32 width, s32 height);