Refactor project

Crealned up some TODOs, FIXMEs etc. Added better error handling. Looks
better, feels better.

graphics/src/rse_graphics.c

@@ -5,13 +5,17 @@
 #include "mesh_controller.h"
 #include "vulkan_commons.h"
 #include "rse_vulkan_image.h"
+#include "utilities/logger.h"
+#include "utilities/rse_commons.h"
+#include "utilities/rse_errors_common.h"
 
 #include "rse_math.h"
 
 extern struct rse_vulkan_state_t g_vulkan_state;
 
-void rse_graphics_init(void)
+rse_err_t rse_graphics_init(void)
 {
+    rse_err_t status = RSE_ERROR_NO_ERROR;
     g_vulkan_state.graphics_queue = VK_NULL_HANDLE;
     g_vulkan_state.physical_device = VK_NULL_HANDLE;
     g_vulkan_state.current_frame = 0U;
@@ -21,17 +25,22 @@ void rse_graphics_init(void)
     g_vulkan_state.pipeline_layout = VK_NULL_HANDLE;
     g_vulkan_state.swapchain = VK_NULL_HANDLE;
 
-    window_init();
+    STATUS_CHECK(window_init());
+    STATUS_CHECK(preinit_vulkan());
 
-    if (0 != preinit_vulkan())
-        return;
+    return status;
 }
 
 void rse_graphics_test_function(void)
 {
-    int8_t tex_id_2 = 0;
+    rse_err_t status = RSE_ERROR_NO_ERROR;
+    uint8_t tex_id_2 = 0;
 
-    tex_id_2 = rse_load_texture("../../test_image.png");
+    status = rse_load_texture("../../test_image.png", &tex_id_2);
+    if (status != RSE_ERROR_NO_ERROR) {
+        LOGE("Failed to do something. Check error messages");
+        return;
+    }
 
     // FIXME: Temporary array of vertices, for testing purposes
     struct rse_vertex_t vertices[] = {{{-0.5f, -0.5f, 0.0f}, {1.0f, 0.0f, 0.0f}, {0.0f, 0.0f}},
@@ -71,17 +80,16 @@ void rse_graphics_test_function(void)
     });
 }
 
-uint8_t rse_graphics_run(void)
+rse_err_t rse_graphics_run(void)
 {
-    if (0 != init_vulkan()) {
-        return -1;
-    }
+    rse_err_t status = RSE_ERROR_NO_ERROR;
+    STATUS_CHECK(init_vulkan());
 
-    window_loop();
+    STATUS_CHECK(window_loop());
 
     deinit_vulkan();
 
     window_terminate();
 
-    return 0;
+    return status;
 }