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source: opengl-game/vulkan-game.cpp@ 5081b9a

feature/imgui-sdl

Last change on this file since 5081b9a was 5081b9a, checked in by Dmitry Portnoy <dportnoy@…>, 3 years ago
Add prevTime and elapsedTime to SDLGame and refactor the event-handling code a little bit
Property mode set to `100644`
File size: 91.0 KB

Line
1	#include "vulkan-game.hpp"
2
3	#include <array>
4	#include <iostream>
5	#include <numeric>
6	#include <set>
7	#include <stdexcept>
8
9	#include "IMGUI/imgui_impl_sdl.h"
10	#include "IMGUI/imgui_internal.h" // For CalcItemSize
11
12	#include "logger.hpp"
13	#include "utils.hpp"
14
15	#include "gui/imgui/button-imgui.hpp"
16
17	using namespace std;
18
19	// TODO: Update all instances of the "... != VK_SUCCESS" check to something similar to
20	// the agp error checking function, which prints an appropriate error message based on the error code
21
22	// TODO: Update all occurances of instance variables to use this-> (Actually, not sure if I really want to do this)
23
24	/* TODO: Try doing the following tasks based on the Vulkan implementation of IMGUI (Also maybe looks at Sascha Willems' code to see how he does these things)
25	*
26	* - When recreating the swapchain, pass the old one in and destroy the old one after the new one is created
27	* - Recreate semaphores when recreating the swapchain
28	* - imgui uses one image acquired and one render complete sem and once fence per frame\
29	* - IMGUI creates one command pool per framebuffer
30	*/
31
32	/* NOTES WHEN ADDING IMGUI
33	*
34	* Possibly cleanup the imgui pipeline in cleanupSwapchain or call some imgui function that does this for me
35	* call ImGui_ImplVulkan_RenderDrawData, without passing in a pipeline, to do the rendering
36	*/
37
38	static void check_imgui_vk_result(VkResult res) {
39	if (res == VK_SUCCESS) {
40	return;
41	}
42
43	ostringstream oss;
44	oss << "[imgui] Vulkan error! VkResult is \"" << VulkanUtils::resultString(res) << "\"" << __LINE__;
45	if (res < 0) {
46	throw runtime_error("Fatal: " + oss.str());
47	} else {
48	cerr << oss.str();
49	}
50	}
51
52	VulkanGame::VulkanGame()
53	: swapChainImageCount(0)
54	, swapChainMinImageCount(0)
55	, swapChainSurfaceFormat({})
56	, swapChainPresentMode(VK_PRESENT_MODE_MAX_ENUM_KHR)
57	, swapChainExtent{ 0, 0 }
58	, swapChain(VK_NULL_HANDLE)
59	, vulkanSurface(VK_NULL_HANDLE)
60	, sdlVersion({ 0, 0, 0 })
61	, instance(VK_NULL_HANDLE)
62	, physicalDevice(VK_NULL_HANDLE)
63	, device(VK_NULL_HANDLE)
64	, debugMessenger(VK_NULL_HANDLE)
65	, resourceCommandPool(VK_NULL_HANDLE)
66	, renderPass(VK_NULL_HANDLE)
67	, graphicsQueue(VK_NULL_HANDLE)
68	, presentQueue(VK_NULL_HANDLE)
69	, depthImage({})
70	, shouldRecreateSwapChain(false)
71	, frameCount(0)
72	, currentFrame(0)
73	, imageIndex(0)
74	, fpsStartTime(0.0f)
75	, curTime(0.0f)
76	, done(false)
77	, currentRenderScreenFn(nullptr)
78	, gui(nullptr)
79	, window(nullptr)
80	, score(0)
81	, fps(0.0f) {
82	object_VP_mats = {};
83	ship_VP_mats = {};
84	asteroid_VP_mats = {};
85	laser_VP_mats = {};
86	explosion_UBO = {};
87	}
88
89	VulkanGame::~VulkanGame() {
90	}
91
92	void VulkanGame::run(int width, int height, unsigned char guiFlags) {
93	seedRandomNums();
94
95	cout << "DEBUGGING IS " << (ENABLE_VALIDATION_LAYERS ? "ON" : "OFF") << endl;
96
97	cout << "Vulkan Game" << endl;
98
99	if (initUI(width, height, guiFlags) == RTWO_ERROR) {
100	return;
101	}
102
103	initVulkan();
104
105	initImGuiOverlay();
106
107	// TODO: Figure out how much of ubo creation and associated variables should be in the pipeline class
108	// Maybe combine the ubo-related objects into a new class
109
110	initGraphicsPipelines();
111
112	initMatrices();
113
114	cout << "INITIALIZING OBJECTS" << endl;
115
116	modelPipeline.addAttribute(VK_FORMAT_R32G32B32_SFLOAT, offset_of(&ModelVertex::pos));
117	modelPipeline.addAttribute(VK_FORMAT_R32G32B32_SFLOAT, offset_of(&ModelVertex::color));
118	modelPipeline.addAttribute(VK_FORMAT_R32G32_SFLOAT, offset_of(&ModelVertex::texCoord));
119	modelPipeline.addAttribute(VK_FORMAT_R32_UINT, offset_of(&ModelVertex::objIndex));
120
121	createBufferSet(sizeof(UBO_VP_mats), VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
122	uniformBuffers_modelPipeline, uniformBuffersMemory_modelPipeline, uniformBufferInfoList_modelPipeline);
123
124	modelPipeline.addDescriptorInfo(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
125	VK_SHADER_STAGE_VERTEX_BIT, &uniformBufferInfoList_modelPipeline);
126	modelPipeline.addStorageDescriptor(VK_SHADER_STAGE_VERTEX_BIT);
127	modelPipeline.addDescriptorInfo(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
128	VK_SHADER_STAGE_FRAGMENT_BIT, &floorTextureImageDescriptor);
129
130	SceneObject<ModelVertex, SSBO_ModelObject>* texturedSquare = nullptr;
131
132	texturedSquare = &addObject(modelObjects, modelPipeline,
133	addObjectIndex<ModelVertex>(modelObjects.size(), {
134	{{-0.5f, -0.5f, 0.0f}, {1.0f, 0.0f, 0.0f}, {0.0f, 1.0f}},
135	{{ 0.5f, -0.5f, 0.0f}, {0.0f, 1.0f, 0.0f}, {1.0f, 1.0f}},
136	{{ 0.5f, 0.5f, 0.0f}, {0.0f, 0.0f, 1.0f}, {1.0f, 0.0f}},
137	{{-0.5f, 0.5f, 0.0f}, {1.0f, 1.0f, 1.0f}, {0.0f, 0.0f}}
138	}), {
139	0, 1, 2, 2, 3, 0
140	}, {
141	mat4(1.0f)
142	}, false);
143
144	texturedSquare->model_base =
145	translate(mat4(1.0f), vec3(0.0f, 0.0f, -2.0f));
146	texturedSquare->modified = true;
147
148	texturedSquare = &addObject(modelObjects, modelPipeline,
149	addObjectIndex<ModelVertex>(modelObjects.size(), {
150	{{-0.5f, -0.5f, 0.0f}, {1.0f, 0.0f, 0.0f}, {0.0f, 1.0f}},
151	{{ 0.5f, -0.5f, 0.0f}, {0.0f, 1.0f, 0.0f}, {1.0f, 1.0f}},
152	{{ 0.5f, 0.5f, 0.0f}, {0.0f, 0.0f, 1.0f}, {1.0f, 0.0f}},
153	{{-0.5f, 0.5f, 0.0f}, {1.0f, 1.0f, 1.0f}, {0.0f, 0.0f}}
154	}), {
155	0, 1, 2, 2, 3, 0
156	}, {
157	mat4(1.0f)
158	}, false);
159
160	texturedSquare->model_base =
161	translate(mat4(1.0f), vec3(0.0f, 0.0f, -1.5f));
162	texturedSquare->modified = true;
163
164	modelPipeline.createDescriptorSetLayout();
165	modelPipeline.createPipeline("shaders/model-vert.spv", "shaders/model-frag.spv");
166	modelPipeline.createDescriptorPool(swapChainImages);
167	modelPipeline.createDescriptorSets(swapChainImages);
168
169	shipPipeline.addAttribute(VK_FORMAT_R32G32B32_SFLOAT, offset_of(&ShipVertex::pos));
170	shipPipeline.addAttribute(VK_FORMAT_R32G32B32_SFLOAT, offset_of(&ShipVertex::color));
171	shipPipeline.addAttribute(VK_FORMAT_R32G32B32_SFLOAT, offset_of(&ShipVertex::normal));
172	shipPipeline.addAttribute(VK_FORMAT_R32_UINT, offset_of(&ShipVertex::objIndex));
173
174	createBufferSet(sizeof(UBO_VP_mats), VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
175	uniformBuffers_shipPipeline, uniformBuffersMemory_shipPipeline, uniformBufferInfoList_shipPipeline);
176
177	shipPipeline.addDescriptorInfo(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
178	VK_SHADER_STAGE_VERTEX_BIT, &uniformBufferInfoList_shipPipeline);
179	shipPipeline.addStorageDescriptor(VK_SHADER_STAGE_VERTEX_BIT);
180
181	// TODO: With the normals, indexing basically becomes pointless since no vertices will have exactly
182	// the same data. Add an option to make some pipelines not use indexing
183	SceneObject<ShipVertex, SSBO_ModelObject>& ship = addObject(shipObjects, shipPipeline,
184	addObjectIndex<ShipVertex>(shipObjects.size(),
185	addVertexNormals<ShipVertex>({
186
187	//back
188	{{ -0.5f, 0.3f, 0.0f}, {0.0f, 0.0f, 0.3f}},
189	{{ -0.5f, 0.0f, 0.0f}, {0.0f, 0.0f, 0.3f}},
190	{{ 0.5f, 0.0f, 0.0f}, {0.0f, 0.0f, 0.3f}},
191	{{ -0.5f, 0.3f, 0.0f}, {0.0f, 0.0f, 0.3f}},
192	{{ 0.5f, 0.0f, 0.0f}, {0.0f, 0.0f, 0.3f}},
193	{{ 0.5f, 0.3f, 0.0f}, {0.0f, 0.0f, 0.3f}},
194
195	// left back
196	{{ -0.5f, 0.3f, -2.0f}, {0.0f, 0.0f, 0.3f}},
197	{{ -0.5f, 0.0f, -2.0f}, {0.0f, 0.0f, 0.3f}},
198	{{ -0.5f, 0.0f, 0.0f}, {0.0f, 0.0f, 0.3f}},
199	{{ -0.5f, 0.3f, -2.0f}, {0.0f, 0.0f, 0.3f}},
200	{{ -0.5f, 0.0f, 0.0f}, {0.0f, 0.0f, 0.3f}},
201	{{ -0.5f, 0.3f, 0.0f}, {0.0f, 0.0f, 0.3f}},
202
203	// right back
204	{{ 0.5f, 0.3f, 0.0f}, {0.0f, 0.0f, 0.3f}},
205	{{ 0.5f, 0.0f, 0.0f}, {0.0f, 0.0f, 0.3f}},
206	{{ 0.5f, 0.0f, -2.0f}, {0.0f, 0.0f, 0.3f}},
207	{{ 0.5f, 0.3f, 0.0f}, {0.0f, 0.0f, 0.3f}},
208	{{ 0.5f, 0.0f, -2.0f}, {0.0f, 0.0f, 0.3f}},
209	{{ 0.5f, 0.3f, -2.0f}, {0.0f, 0.0f, 0.3f}},
210
211	// left mid
212	{{-0.25f, 0.3f, -3.0f}, {0.0f, 0.0f, 0.3f}},
213	{{-0.25f, 0.0f, -3.0f}, {0.0f, 0.0f, 0.3f}},
214	{{ -0.5f, 0.0f, -2.0f}, {0.0f, 0.0f, 0.3f}},
215	{{-0.25f, 0.3f, -3.0f}, {0.0f, 0.0f, 0.3f}},
216	{{ -0.5f, 0.0f, -2.0f}, {0.0f, 0.0f, 0.3f}},
217	{{ -0.5f, 0.3f, -2.0f}, {0.0f, 0.0f, 0.3f}},
218
219	// right mid
220	{{ 0.5f, 0.3f, -2.0f}, {0.0f, 0.0f, 0.3f}},
221	{{ 0.5f, 0.0f, -2.0f}, {0.0f, 0.0f, 0.3f}},
222	{{ 0.25f, 0.0f, -3.0f}, {0.0f, 0.0f, 0.3f}},
223	{{ 0.5f, 0.3f, -2.0f}, {0.0f, 0.0f, 0.3f}},
224	{{ 0.25f, 0.0f, -3.0f}, {0.0f, 0.0f, 0.3f}},
225	{{ 0.25f, 0.3f, -3.0f}, {0.0f, 0.0f, 0.3f}},
226
227	// left front
228	{{ 0.0f, 0.0f, -3.5f}, {0.0f, 0.0f, 1.0f}},
229	{{-0.25f, 0.0f, -3.0f}, {0.0f, 0.0f, 1.0f}},
230	{{-0.25f, 0.3f, -3.0f}, {0.0f, 0.0f, 1.0f}},
231
232	// right front
233	{{ 0.25f, 0.3f, -3.0f}, {0.0f, 0.0f, 1.0f}},
234	{{ 0.25f, 0.0f, -3.0f}, {0.0f, 0.0f, 1.0f}},
235	{{ 0.0f, 0.0f, -3.5f}, {0.0f, 0.0f, 1.0f}},
236
237	// top back
238	{{ -0.5f, 0.3f, -2.0f}, {0.0f, 0.0f, 1.0f}},
239	{{ -0.5f, 0.3f, 0.0f}, {0.0f, 0.0f, 1.0f}},
240	{{ 0.5f, 0.3f, 0.0f}, {0.0f, 0.0f, 1.0f}},
241	{{ -0.5f, 0.3f, -2.0f}, {0.0f, 0.0f, 1.0f}},
242	{{ 0.5f, 0.3f, 0.0f}, {0.0f, 0.0f, 1.0f}},
243	{{ 0.5f, 0.3f, -2.0f}, {0.0f, 0.0f, 1.0f}},
244
245	// bottom back
246	{{ -0.5f, 0.0f, 0.0f}, {0.0f, 0.0f, 1.0f}},
247	{{ -0.5f, 0.0f, -2.0f}, {0.0f, 0.0f, 1.0f}},
248	{{ 0.5f, 0.0f, 0.0f}, {0.0f, 0.0f, 1.0f}},
249	{{ 0.5f, 0.0f, 0.0f}, {0.0f, 0.0f, 1.0f}},
250	{{ -0.5f, 0.0f, -2.0f}, {0.0f, 0.0f, 1.0f}},
251	{{ 0.5f, 0.0f, -2.0f}, {0.0f, 0.0f, 1.0f}},
252
253	// top mid
254	{{-0.25f, 0.3f, -3.0f}, {0.0f, 0.0f, 1.0f}},
255	{{ -0.5f, 0.3f, -2.0f}, {0.0f, 0.0f, 1.0f}},
256	{{ 0.5f, 0.3f, -2.0f}, {0.0f, 0.0f, 1.0f}},
257	{{ -0.25f, 0.3f, -3.0f}, {0.0f, 0.0f, 1.0f}},
258	{{ 0.5f, 0.3f, -2.0f}, {0.0f, 0.0f, 1.0f}},
259	{{ 0.25f, 0.3f, -3.0f}, {0.0f, 0.0f, 1.0f}},
260
261	// bottom mid
262	{{ -0.5f, 0.0f, -2.0f}, {0.0f, 0.0f, 1.0f}},
263	{{-0.25f, 0.0f, -3.0f}, {0.0f, 0.0f, 1.0f}},
264	{{ 0.5f, 0.0f, -2.0f}, {0.0f, 0.0f, 1.0f}},
265	{{ 0.5f, 0.0f, -2.0f}, {0.0f, 0.0f, 1.0f}},
266	{{-0.25f, 0.0f, -3.0f}, {0.0f, 0.0f, 1.0f}},
267	{{ 0.25f, 0.0f, -3.0f}, {0.0f, 0.0f, 1.0f}},
268
269	// top front
270	{{-0.25f, 0.3f, -3.0f}, {0.0f, 0.0f, 0.3f}},
271	{{ 0.25f, 0.3f, -3.0f}, {0.0f, 0.0f, 0.3f}},
272	{{ 0.0f, 0.0f, -3.5f}, {0.0f, 0.0f, 0.3f}},
273
274	// bottom front
275	{{ 0.25f, 0.0f, -3.0f}, {0.0f, 0.0f, 0.3f}},
276	{{-0.25f, 0.0f, -3.0f}, {0.0f, 0.0f, 0.3f}},
277	{{ 0.0f, 0.0f, -3.5f}, {0.0f, 0.0f, 0.3f}},
278
279	// left wing start back
280	{{ -1.5f, 0.3f, 0.0f}, {0.0f, 0.0f, 0.3f}},
281	{{ -1.5f, 0.0f, 0.0f}, {0.0f, 0.0f, 0.3f}},
282	{{ -0.5f, 0.0f, 0.0f}, {0.0f, 0.0f, 0.3f}},
283	{{ -1.5f, 0.3f, 0.0f}, {0.0f, 0.0f, 0.3f}},
284	{{ -0.5f, 0.0f, 0.0f}, {0.0f, 0.0f, 0.3f}},
285	{{ -0.5f, 0.3f, 0.0f}, {0.0f, 0.0f, 0.3f}},
286
287	// left wing start top
288	{{ -0.5f, 0.3f, -0.3f}, {0.0f, 0.0f, 0.3f}},
289	{{ -1.3f, 0.3f, -0.3f}, {0.0f, 0.0f, 0.3f}},
290	{{ -1.5f, 0.3f, 0.0f}, {0.0f, 0.0f, 0.3f}},
291	{{ -0.5f, 0.3f, -0.3f}, {0.0f, 0.0f, 0.3f}},
292	{{ -1.5f, 0.3f, 0.0f}, {0.0f, 0.0f, 0.3f}},
293	{{ -0.5f, 0.3f, 0.0f}, {0.0f, 0.0f, 0.3f}},
294
295	// left wing start front
296	{{ -0.5f, 0.3f, -0.3f}, {0.0f, 0.0f, 0.3f}},
297	{{ -0.5f, 0.0f, -0.3f}, {0.0f, 0.0f, 0.3f}},
298	{{ -1.3f, 0.0f, -0.3f}, {0.0f, 0.0f, 0.3f}},
299	{{ -0.5f, 0.3f, -0.3f}, {0.0f, 0.0f, 0.3f}},
300	{{ -1.3f, 0.0f, -0.3f}, {0.0f, 0.0f, 0.3f}},
301	{{ -1.3f, 0.3f, -0.3f}, {0.0f, 0.0f, 0.3f}},
302
303	// left wing start bottom
304	{{ -0.5f, 0.0f, 0.0f}, {0.0f, 0.0f, 0.3f}},
305	{{ -1.5f, 0.0f, 0.0f}, {0.0f, 0.0f, 0.3f}},
306	{{ -1.3f, 0.0f, -0.3f}, {0.0f, 0.0f, 0.3f}},
307	{{ -0.5f, 0.0f, 0.0f}, {0.0f, 0.0f, 0.3f}},
308	{{ -1.3f, 0.0f, -0.3f}, {0.0f, 0.0f, 0.3f}},
309	{{ -0.5f, 0.0f, -0.3f}, {0.0f, 0.0f, 0.3f}},
310
311	// left wing end outside
312	{{ -1.5f, 0.3f, 0.0f}, {0.0f, 0.0f, 0.3f}},
313	{{ -2.2f, 0.15f, -0.8f}, {0.0f, 0.0f, 0.3f}},
314	{{ -1.5f, 0.0f, 0.0f}, {0.0f, 0.0f, 0.3f}},
315
316	// left wing end top
317	{{ -1.3f, 0.3f, -0.3f}, {0.0f, 0.0f, 0.3f}},
318	{{ -2.2f, 0.15f, -0.8f}, {0.0f, 0.0f, 0.3f}},
319	{{ -1.5f, 0.3f, 0.0f}, {0.0f, 0.0f, 0.3f}},
320
321	// left wing end front
322	{{ -1.3f, 0.0f, -0.3f}, {0.0f, 0.0f, 0.3f}},
323	{{ -2.2f, 0.15f, -0.8f}, {0.0f, 0.0f, 0.3f}},
324	{{ -1.3f, 0.3f, -0.3f}, {0.0f, 0.0f, 0.3f}},
325
326	// left wing end bottom
327	{{ -1.5f, 0.0f, 0.0f}, {0.0f, 0.0f, 0.3f}},
328	{{ -2.2f, 0.15f, -0.8f}, {0.0f, 0.0f, 0.3f}},
329	{{ -1.3f, 0.0f, -0.3f}, {0.0f, 0.0f, 0.3f}},
330
331	// right wing start back
332	{{ 1.5f, 0.0f, 0.0f}, {0.0f, 0.0f, 0.3f}},
333	{{ 1.5f, 0.3f, 0.0f}, {0.0f, 0.0f, 0.3f}},
334	{{ 0.5f, 0.0f, 0.0f}, {0.0f, 0.0f, 0.3f}},
335	{{ 0.5f, 0.0f, 0.0f}, {0.0f, 0.0f, 0.3f}},
336	{{ 1.5f, 0.3f, 0.0f}, {0.0f, 0.0f, 0.3f}},
337	{{ 0.5f, 0.3f, 0.0f}, {0.0f, 0.0f, 0.3f}},
338
339	// right wing start top
340	{{ 1.3f, 0.3f, -0.3f}, {0.0f, 0.0f, 0.3f}},
341	{{ 0.5f, 0.3f, -0.3f}, {0.0f, 0.0f, 0.3f}},
342	{{ 1.5f, 0.3f, 0.0f}, {0.0f, 0.0f, 0.3f}},
343	{{ 1.5f, 0.3f, 0.0f}, {0.0f, 0.0f, 0.3f}},
344	{{ 0.5f, 0.3f, -0.3f}, {0.0f, 0.0f, 0.3f}},
345	{{ 0.5f, 0.3f, 0.0f}, {0.0f, 0.0f, 0.3f}},
346
347	// right wing start front
348	{{ 0.5f, 0.0f, -0.3f}, {0.0f, 0.0f, 0.3f}},
349	{{ 0.5f, 0.3f, -0.3f}, {0.0f, 0.0f, 0.3f}},
350	{{ 1.3f, 0.0f, -0.3f}, {0.0f, 0.0f, 0.3f}},
351	{{ 1.3f, 0.0f, -0.3f}, {0.0f, 0.0f, 0.3f}},
352	{{ 0.5f, 0.3f, -0.3f}, {0.0f, 0.0f, 0.3f}},
353	{{ 1.3f, 0.3f, -0.3f}, {0.0f, 0.0f, 0.3f}},
354
355	// right wing start bottom
356	{{ 1.5f, 0.0f, 0.0f}, {0.0f, 0.0f, 0.3f}},
357	{{ 0.5f, 0.0f, 0.0f}, {0.0f, 0.0f, 0.3f}},
358	{{ 1.3f, 0.0f, -0.3f}, {0.0f, 0.0f, 0.3f}},
359	{{ 1.3f, 0.0f, -0.3f}, {0.0f, 0.0f, 0.3f}},
360	{{ 0.5f, 0.0f, 0.0f}, {0.0f, 0.0f, 0.3f}},
361	{{ 0.5f, 0.0f, -0.3f}, {0.0f, 0.0f, 0.3f}},
362
363	// right wing end outside
364	{{ 2.2f, 0.15f, -0.8f}, {0.0f, 0.0f, 0.3f}},
365	{{ 1.5f, 0.3f, 0.0f}, {0.0f, 0.0f, 0.3f}},
366	{{ 1.5f, 0.0f, 0.0f}, {0.0f, 0.0f, 0.3f}},
367
368	// right wing end top
369	{{ 2.2f, 0.15f, -0.8f}, {0.0f, 0.0f, 0.3f}},
370	{{ 1.3f, 0.3f, -0.3f}, {0.0f, 0.0f, 0.3f}},
371	{{ 1.5f, 0.3f, 0.0f}, {0.0f, 0.0f, 0.3f}},
372
373	// right wing end front
374	{{ 2.2f, 0.15f, -0.8f}, {0.0f, 0.0f, 0.3f}},
375	{{ 1.3f, 0.0f, -0.3f}, {0.0f, 0.0f, 0.3f}},
376	{{ 1.3f, 0.3f, -0.3f}, {0.0f, 0.0f, 0.3f}},
377
378	// right wing end bottom
379	{{ 2.2f, 0.15f, -0.8f}, {0.0f, 0.0f, 0.3f}},
380	{{ 1.5f, 0.0f, 0.0f}, {0.0f, 0.0f, 0.3f}},
381	{{ 1.3f, 0.0f, -0.3f}, {0.0f, 0.0f, 0.3f}},
382	})), {
383	0, 1, 2, 3, 4, 5,
384	6, 7, 8, 9, 10, 11,
385	12, 13, 14, 15, 16, 17,
386	18, 19, 20, 21, 22, 23,
387	24, 25, 26, 27, 28, 29,
388	30, 31, 32,
389	33, 34, 35,
390	36, 37, 38, 39, 40, 41,
391	42, 43, 44, 45, 46, 47,
392	48, 49, 50, 51, 52, 53,
393	54, 55, 56, 57, 58, 59,
394	60, 61, 62,
395	63, 64, 65,
396	66, 67, 68, 69, 70, 71,
397	72, 73, 74, 75, 76, 77,
398	78, 79, 80, 81, 82, 83,
399	84, 85, 86, 87, 88, 89,
400	90, 91, 92,
401	93, 94, 95,
402	96, 97, 98,
403	99, 100, 101,
404	102, 103, 104, 105, 106, 107,
405	108, 109, 110, 111, 112, 113,
406	114, 115, 116, 117, 118, 119,
407	120, 121, 122, 123, 124, 125,
408	126, 127, 128,
409	129, 130, 131,
410	132, 133, 134,
411	135, 136, 137,
412	}, {
413	mat4(1.0f)
414	}, false);
415
416	ship.model_base =
417	translate(mat4(1.0f), vec3(0.0f, -1.2f, 1.65f)) *
418	scale(mat4(1.0f), vec3(0.1f, 0.1f, 0.1f));
419	ship.modified = true;
420
421	shipPipeline.createDescriptorSetLayout();
422	shipPipeline.createPipeline("shaders/ship-vert.spv", "shaders/ship-frag.spv");
423	shipPipeline.createDescriptorPool(swapChainImages);
424	shipPipeline.createDescriptorSets(swapChainImages);
425
426	asteroidPipeline.addAttribute(VK_FORMAT_R32G32B32_SFLOAT, offset_of(&AsteroidVertex::pos));
427	asteroidPipeline.addAttribute(VK_FORMAT_R32G32B32_SFLOAT, offset_of(&AsteroidVertex::color));
428	asteroidPipeline.addAttribute(VK_FORMAT_R32G32B32_SFLOAT, offset_of(&AsteroidVertex::normal));
429	asteroidPipeline.addAttribute(VK_FORMAT_R32_UINT, offset_of(&AsteroidVertex::objIndex));
430
431	createBufferSet(sizeof(UBO_VP_mats), VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
432	uniformBuffers_asteroidPipeline, uniformBuffersMemory_asteroidPipeline, uniformBufferInfoList_asteroidPipeline);
433
434	asteroidPipeline.addDescriptorInfo(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
435	VK_SHADER_STAGE_VERTEX_BIT, &uniformBufferInfoList_asteroidPipeline);
436	asteroidPipeline.addStorageDescriptor(VK_SHADER_STAGE_VERTEX_BIT);
437
438	asteroidPipeline.createDescriptorSetLayout();
439	asteroidPipeline.createPipeline("shaders/asteroid-vert.spv", "shaders/asteroid-frag.spv");
440	asteroidPipeline.createDescriptorPool(swapChainImages);
441	asteroidPipeline.createDescriptorSets(swapChainImages);
442
443	laserPipeline.addAttribute(VK_FORMAT_R32G32B32_SFLOAT, offset_of(&LaserVertex::pos));
444	laserPipeline.addAttribute(VK_FORMAT_R32G32B32_SFLOAT, offset_of(&LaserVertex::texCoord));
445	laserPipeline.addAttribute(VK_FORMAT_R32_UINT, offset_of(&LaserVertex::objIndex));
446
447	createBufferSet(sizeof(UBO_VP_mats), VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
448	uniformBuffers_laserPipeline, uniformBuffersMemory_laserPipeline, uniformBufferInfoList_laserPipeline);
449
450	laserPipeline.addDescriptorInfo(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
451	VK_SHADER_STAGE_VERTEX_BIT, &uniformBufferInfoList_laserPipeline);
452	laserPipeline.addStorageDescriptor(VK_SHADER_STAGE_VERTEX_BIT \| VK_SHADER_STAGE_FRAGMENT_BIT);
453	laserPipeline.addDescriptorInfo(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
454	VK_SHADER_STAGE_FRAGMENT_BIT, &laserTextureImageDescriptor);
455
456	laserPipeline.createDescriptorSetLayout();
457	laserPipeline.createPipeline("shaders/laser-vert.spv", "shaders/laser-frag.spv");
458	laserPipeline.createDescriptorPool(swapChainImages);
459	laserPipeline.createDescriptorSets(swapChainImages);
460
461	explosionPipeline.addAttribute(VK_FORMAT_R32G32B32_SFLOAT, offset_of(&ExplosionVertex::particleStartVelocity));
462	explosionPipeline.addAttribute(VK_FORMAT_R32_SFLOAT, offset_of(&ExplosionVertex::particleStartTime));
463	explosionPipeline.addAttribute(VK_FORMAT_R32_UINT, offset_of(&ExplosionVertex::objIndex));
464
465	createBufferSet(sizeof(UBO_Explosion), VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
466	uniformBuffers_explosionPipeline, uniformBuffersMemory_explosionPipeline, uniformBufferInfoList_explosionPipeline);
467
468	explosionPipeline.addDescriptorInfo(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
469	VK_SHADER_STAGE_VERTEX_BIT, &uniformBufferInfoList_explosionPipeline);
470	explosionPipeline.addStorageDescriptor(VK_SHADER_STAGE_VERTEX_BIT);
471
472	explosionPipeline.createDescriptorSetLayout();
473	explosionPipeline.createPipeline("shaders/explosion-vert.spv", "shaders/explosion-frag.spv");
474	explosionPipeline.createDescriptorPool(swapChainImages);
475	explosionPipeline.createDescriptorSets(swapChainImages);
476
477	currentRenderScreenFn = &VulkanGame::renderMainScreen;
478
479	ImGuiIO& io = ImGui::GetIO();
480
481	initGuiValueLists(valueLists);
482
483	valueLists["stats value list"].push_back(UIValue(UIVALUE_INT, "Score", &score));
484	valueLists["stats value list"].push_back(UIValue(UIVALUE_DOUBLE, "FPS", &fps));
485	valueLists["stats value list"].push_back(UIValue(UIVALUE_DOUBLE, "IMGUI FPS", &io.Framerate));
486
487	renderLoop();
488	cleanup();
489
490	close_log();
491	}
492
493	bool VulkanGame::initUI(int width, int height, unsigned char guiFlags) {
494	// TODO: Create a game-gui function to get the gui version and retrieve it that way
495
496	SDL_VERSION(&sdlVersion); // This gets the compile-time version
497	SDL_GetVersion(&sdlVersion); // This gets the runtime version
498
499	cout << "SDL "<<
500	to_string(sdlVersion.major) << "." <<
501	to_string(sdlVersion.minor) << "." <<
502	to_string(sdlVersion.patch) << endl;
503
504	// TODO: Refactor the logger api to be more flexible,
505	// esp. since gl_log() and gl_log_err() have issues printing anything besides strings
506	restart_gl_log();
507	gl_log("starting SDL\n%s.%s.%s",
508	to_string(sdlVersion.major).c_str(),
509	to_string(sdlVersion.minor).c_str(),
510	to_string(sdlVersion.patch).c_str());
511
512	// TODO: Use open_Log() and related functions instead of gl_log ones
513	// TODO: In addition, delete the gl_log functions
514	open_log();
515	get_log() << "starting SDL" << endl;
516	get_log() <<
517	(int)sdlVersion.major << "." <<
518	(int)sdlVersion.minor << "." <<
519	(int)sdlVersion.patch << endl;
520
521	// TODO: Put all fonts, textures, and images in the assets folder
522	gui = new GameGui_SDL();
523
524	if (gui->init() == RTWO_ERROR) {
525	// TODO: Also print these sorts of errors to the log
526	cout << "UI library could not be initialized!" << endl;
527	cout << gui->getError() << endl;
528	// TODO: Rename RTWO_ERROR to something else
529	return RTWO_ERROR;
530	}
531
532	window = (SDL_Window*) gui->createWindow("Vulkan Game", width, height, guiFlags & GUI_FLAGS_WINDOW_FULLSCREEN);
533	if (window == nullptr) {
534	cout << "Window could not be created!" << endl;
535	cout << gui->getError() << endl;
536	return RTWO_ERROR;
537	}
538
539	cout << "Target window size: (" << width << ", " << height << ")" << endl;
540	cout << "Actual window size: (" << gui->getWindowWidth() << ", " << gui->getWindowHeight() << ")" << endl;
541
542	return RTWO_SUCCESS;
543	}
544
545	void VulkanGame::initVulkan() {
546	const vector<const char*> validationLayers = {
547	"VK_LAYER_KHRONOS_validation"
548	};
549	const vector<const char*> deviceExtensions = {
550	VK_KHR_SWAPCHAIN_EXTENSION_NAME
551	};
552
553	createVulkanInstance(validationLayers);
554	setupDebugMessenger();
555	createVulkanSurface();
556	pickPhysicalDevice(deviceExtensions);
557	createLogicalDevice(validationLayers, deviceExtensions);
558	chooseSwapChainProperties();
559	createSwapChain();
560	createImageViews();
561
562	createResourceCommandPool();
563	createImageResources();
564
565	createRenderPass();
566	createCommandPools();
567	createFramebuffers();
568	createCommandBuffers();
569	createSyncObjects();
570	}
571
572	void VulkanGame::initGraphicsPipelines() {
573	modelPipeline = GraphicsPipeline_Vulkan<ModelVertex, SSBO_ModelObject>(
574	VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST, physicalDevice, device, renderPass,
575	{ 0, 0, (int)swapChainExtent.width, (int)swapChainExtent.height }, swapChainImages, 16, 24, 10);
576
577	shipPipeline = GraphicsPipeline_Vulkan<ShipVertex, SSBO_ModelObject>(
578	VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST, physicalDevice, device, renderPass,
579	{ 0, 0, (int)swapChainExtent.width, (int)swapChainExtent.height }, swapChainImages, 138, 138, 10);
580
581	asteroidPipeline = GraphicsPipeline_Vulkan<AsteroidVertex, SSBO_Asteroid>(
582	VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST, physicalDevice, device, renderPass,
583	{ 0, 0, (int)swapChainExtent.width, (int)swapChainExtent.height }, swapChainImages, 24, 36, 10);
584
585	laserPipeline = GraphicsPipeline_Vulkan<LaserVertex, SSBO_Laser>(
586	VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST, physicalDevice, device, renderPass,
587	{ 0, 0, (int)swapChainExtent.width, (int)swapChainExtent.height }, swapChainImages, 8, 18, 2);
588
589	explosionPipeline = GraphicsPipeline_Vulkan<ExplosionVertex, SSBO_Explosion>(
590	VK_PRIMITIVE_TOPOLOGY_POINT_LIST, physicalDevice, device, renderPass,
591	{ 0, 0, (int)swapChainExtent.width, (int)swapChainExtent.height },
592	swapChainImages, EXPLOSION_PARTICLE_COUNT, EXPLOSION_PARTICLE_COUNT, 2);
593	}
594
595	// TODO: Maybe changes the name to initScene() or something similar
596	void VulkanGame::initMatrices() {
597	cam_pos = vec3(0.0f, 0.0f, 2.0f);
598
599	float cam_yaw = 0.0f;
600	float cam_pitch = -50.0f;
601
602	mat4 yaw_mat = rotate(mat4(1.0f), radians(-cam_yaw), vec3(0.0f, 1.0f, 0.0f));
603	mat4 pitch_mat = rotate(mat4(1.0f), radians(-cam_pitch), vec3(1.0f, 0.0f, 0.0f));
604
605	mat4 R_view = pitch_mat * yaw_mat;
606	mat4 T_view = translate(mat4(1.0f), vec3(-cam_pos.x, -cam_pos.y, -cam_pos.z));
607	viewMat = R_view * T_view;
608
609	projMat = perspective(radians(FOV_ANGLE), (float)swapChainExtent.width / (float)swapChainExtent.height, NEAR_CLIP, FAR_CLIP);
610	projMat[1][1] *= -1; // flip the y-axis so that +y is up
611
612	object_VP_mats.view = viewMat;
613	object_VP_mats.proj = projMat;
614
615	ship_VP_mats.view = viewMat;
616	ship_VP_mats.proj = projMat;
617
618	asteroid_VP_mats.view = viewMat;
619	asteroid_VP_mats.proj = projMat;
620
621	laser_VP_mats.view = viewMat;
622	laser_VP_mats.proj = projMat;
623
624	explosion_UBO.view = viewMat;
625	explosion_UBO.proj = projMat;
626	}
627
628	void VulkanGame::renderLoop() {
629	startTime = steady_clock::now();
630	curTime = duration<float, seconds::period>(steady_clock::now() - startTime).count();
631
632	fpsStartTime = curTime;
633	frameCount = 0;
634
635	lastSpawn_asteroid = curTime;
636
637	ImGuiIO& io = ImGui::GetIO();
638
639	done = false;
640	while (!done) {
641
642	prevTime = curTime;
643	curTime = duration<float, seconds::period>(steady_clock::now() - startTime).count();
644	elapsedTime = curTime - prevTime;
645
646	if (curTime - fpsStartTime >= 1.0f) {
647	fps = (float)frameCount / (curTime - fpsStartTime);
648
649	frameCount = 0;
650	fpsStartTime = curTime;
651	}
652
653	frameCount++;
654
655	gui->processEvents();
656
657	UIEvent uiEvent;
658	while (gui->pollEvent(&uiEvent)) {
659	GameEvent& e = uiEvent.event;
660	SDL_Event sdlEvent = uiEvent.rawEvent.sdl;
661
662	ImGui_ImplSDL2_ProcessEvent(&sdlEvent);
663	if ((e.type == UI_EVENT_MOUSEBUTTONDOWN \|\| e.type == UI_EVENT_MOUSEBUTTONUP \|\| e.type == UI_EVENT_UNKNOWN) &&
664	io.WantCaptureMouse) {
665	if (sdlEvent.type == SDL_MOUSEWHEEL \|\| sdlEvent.type == SDL_MOUSEBUTTONDOWN \|\|
666	sdlEvent.type == SDL_MOUSEBUTTONUP) {
667	continue;
668	}
669	}
670	if ((e.type == UI_EVENT_KEYDOWN \|\| e.type == UI_EVENT_KEYUP) && io.WantCaptureKeyboard) {
671	if (sdlEvent.type == SDL_KEYDOWN \|\| sdlEvent.type == SDL_KEYUP) {
672	continue;
673	}
674	}
675	if (io.WantTextInput) {
676	// show onscreen keyboard if on mobile
677	}
678
679	switch (e.type) {
680	case UI_EVENT_QUIT:
681	cout << "Quit event detected" << endl;
682	done = true;
683	break;
684	case UI_EVENT_WINDOWRESIZE:
685	cout << "Window resize event detected" << endl;
686	shouldRecreateSwapChain = true;
687	break;
688	case UI_EVENT_KEYDOWN:
689	if (e.key.repeat) {
690	break;
691	}
692
693	if (e.key.keycode == SDL_SCANCODE_ESCAPE) {
694	done = true;
695	} else if (e.key.keycode == SDL_SCANCODE_SPACE) {
696	cout << "Adding a plane" << endl;
697	float zOffset = -2.0f + (0.5f * modelObjects.size());
698
699	SceneObject<ModelVertex, SSBO_ModelObject>& texturedSquare =
700	addObject(modelObjects, modelPipeline,
701	addObjectIndex<ModelVertex>(modelObjects.size(), {
702	{{-0.5f, -0.5f, 0.0f}, {1.0f, 0.0f, 0.0f}, {0.0f, 1.0f}},
703	{{ 0.5f, -0.5f, 0.0f}, {0.0f, 1.0f, 0.0f}, {1.0f, 1.0f}},
704	{{ 0.5f, 0.5f, 0.0f}, {0.0f, 0.0f, 1.0f}, {1.0f, 0.0f}},
705	{{-0.5f, 0.5f, 0.0f}, {1.0f, 1.0f, 1.0f}, {0.0f, 0.0f}}
706	}), {
707	0, 1, 2, 2, 3, 0
708	}, {
709	mat4(1.0f)
710	}, true);
711
712	texturedSquare.model_base =
713	translate(mat4(1.0f), vec3(0.0f, 0.0f, zOffset));
714	texturedSquare.modified = true;
715	} else if (e.key.keycode == SDL_SCANCODE_Z && leftLaserIdx == -1) {
716	// TODO: When I start actually removing objects from the object vectors,
717	// I will need to update the indices since they might become incorrect
718	// or invalid as objects get moved around
719
720	vec3 offset(shipObjects[0].model_transform * vec4(0.0f, 0.0f, 0.0f, 1.0f));
721
722	addLaser(
723	vec3(-0.21f, -1.19f, 1.76f) + offset,
724	vec3(-0.21f, -1.19f, -3.0f) + offset,
725	LASER_COLOR, 0.03f);
726
727	leftLaserIdx = laserObjects.size() - 1;
728	} else if (e.key.keycode == SDL_SCANCODE_X && rightLaserIdx == -1) {
729	vec3 offset(shipObjects[0].model_transform * vec4(0.0f, 0.0f, 0.0f, 1.0f));
730
731	addLaser(
732	vec3(0.21f, -1.19f, 1.76f) + offset,
733	vec3(0.21f, -1.19f, -3.0f) + offset,
734	LASER_COLOR, 0.03f);
735
736	rightLaserIdx = laserObjects.size() - 1;
737	} else {
738	cout << "Key event detected" << endl;
739	}
740	break;
741	case UI_EVENT_KEYUP:
742	if (e.key.keycode == SDL_SCANCODE_Z && leftLaserIdx != -1) {
743	laserObjects[leftLaserIdx].ssbo.deleted = true;
744	laserObjects[leftLaserIdx].modified = true;
745	leftLaserIdx = -1;
746
747	if (leftLaserEffect != nullptr) {
748	leftLaserEffect->deleted = true;
749	leftLaserEffect = nullptr;
750	}
751	} else if (e.key.keycode == SDL_SCANCODE_X && rightLaserIdx != -1) {
752	laserObjects[rightLaserIdx].ssbo.deleted = true;
753	laserObjects[rightLaserIdx].modified = true;
754	rightLaserIdx = -1;
755
756	if (rightLaserEffect != nullptr) {
757	rightLaserEffect->deleted = true;
758	rightLaserEffect = nullptr;
759	}
760	}
761	break;
762	case UI_EVENT_WINDOW:
763	case UI_EVENT_MOUSEBUTTONDOWN:
764	case UI_EVENT_MOUSEBUTTONUP:
765	case UI_EVENT_MOUSEMOTION:
766	break;
767	case UI_EVENT_UNHANDLED:
768	cout << "Unhandled event type: 0x" << hex << sdlEvent.type << dec << endl;
769	break;
770	case UI_EVENT_UNKNOWN:
771	default:
772	cout << "Unknown event type: 0x" << hex << sdlEvent.type << dec << endl;
773	break;
774	}
775
776	// This was left ovedr from the previous SDL UI implementation.
777	// Might need something like this again when I start processing screen-specific UI events not related
778	// to the IMGUI ui, such as arrow keys for movement and other buttons for shotting or something
779	// currentScreen->handleEvent(e);
780	}
781
782	// Check which keys are held down
783
784	SceneObject<ShipVertex, SSBO_ModelObject>& ship = shipObjects[0];
785
786	if (gui->keyPressed(SDL_SCANCODE_LEFT)) {
787	float distance = -this->shipSpeed * this->elapsedTime;
788
789	ship.model_transform = translate(mat4(1.0f), vec3(distance, 0.0f, 0.0f))
790	* shipObjects[0].model_transform;
791	ship.modified = true;
792
793	if (leftLaserIdx != -1) {
794	translateLaser(leftLaserIdx, vec3(distance, 0.0f, 0.0f));
795	}
796	if (rightLaserIdx != -1) {
797	translateLaser(rightLaserIdx, vec3(distance, 0.0f, 0.0f));
798	}
799	} else if (gui->keyPressed(SDL_SCANCODE_RIGHT)) {
800	float distance = this->shipSpeed * this->elapsedTime;
801
802	ship.model_transform = translate(mat4(1.0f), vec3(distance, 0.0f, 0.0f))
803	* shipObjects[0].model_transform;
804	ship.modified = true;
805
806	if (leftLaserIdx != -1) {
807	translateLaser(leftLaserIdx, vec3(distance, 0.0f, 0.0f));
808	}
809	if (rightLaserIdx != -1) {
810	translateLaser(rightLaserIdx, vec3(distance, 0.0f, 0.0f));
811	}
812	}
813
814	if (shouldRecreateSwapChain) {
815	gui->refreshWindowSize();
816	const bool isMinimized = gui->getWindowWidth() == 0 \|\| gui->getWindowHeight() == 0;
817
818	if (!isMinimized) {
819	// TODO: This should be used if the min image count changes, presumably because a new surface was created
820	// with a different image count or something like that. Maybe I want to add code to query for a new min image count
821	// during swapchain recreation to take advantage of this
822	ImGui_ImplVulkan_SetMinImageCount(swapChainMinImageCount);
823
824	recreateSwapChain();
825
826	shouldRecreateSwapChain = false;
827	}
828	}
829
830	updateScene();
831
832	// TODO: Move this into a renderImGuiOverlay() function
833	ImGui_ImplVulkan_NewFrame();
834	ImGui_ImplSDL2_NewFrame(window);
835	ImGui::NewFrame();
836
837	(this->*currentRenderScreenFn)(gui->getWindowWidth(), gui->getWindowHeight());
838
839	ImGui::Render();
840
841	gui->refreshWindowSize();
842	const bool isMinimized = gui->getWindowWidth() == 0 \|\| gui->getWindowHeight() == 0;
843
844	if (!isMinimized) {
845	renderFrame(ImGui::GetDrawData());
846	presentFrame();
847	}
848	}
849	}
850
851	// TODO: The only updates that need to happen once per Vulkan image are the SSBO ones,
852	// which are already handled by updateObject(). Move this code to a different place,
853	// where it will run just once per frame
854	void VulkanGame::updateScene() {
855	for (SceneObject<ModelVertex, SSBO_ModelObject>& model : this->modelObjects) {
856	model.model_transform =
857	translate(mat4(1.0f), vec3(0.0f, -2.0f, -0.0f)) *
858	rotate(mat4(1.0f), curTime * radians(90.0f), vec3(0.0f, 0.0f, 1.0f));
859	model.modified = true;
860	}
861
862	if (leftLaserIdx != -1) {
863	updateLaserTarget(leftLaserIdx);
864	}
865	if (rightLaserIdx != -1) {
866	updateLaserTarget(rightLaserIdx);
867	}
868
869	for (vector<BaseEffectOverTime*>::iterator it = effects.begin(); it != effects.end(); ) {
870	if ((*it)->deleted) {
871	delete *it;
872	it = effects.erase(it);
873	} else {
874	BaseEffectOverTime* eot = *it;
875
876	eot->applyEffect(curTime);
877
878	it++;
879	}
880	}
881
882	for (SceneObject<AsteroidVertex, SSBO_Asteroid>& asteroid : this->asteroidObjects) {
883	if (!asteroid.ssbo.deleted) {
884	vec3 objCenter = vec3(viewMat * vec4(asteroid.center, 1.0f));
885
886	if (asteroid.ssbo.hp <= 0.0f) {
887	asteroid.ssbo.deleted = true;
888
889	// TODO: Optimize this so I don't recalculate the camera rotation every time
890	// TODO: Also, avoid re-declaring cam_pitch
891	float cam_pitch = -50.0f;
892	mat4 pitch_mat = rotate(mat4(1.0f), radians(cam_pitch), vec3(1.0f, 0.0f, 0.0f));
893	mat4 model_mat = translate(mat4(1.0f), asteroid.center) * pitch_mat;
894
895	addExplosion(model_mat, 0.5f, curTime);
896
897	this->score++;
898	} else if ((objCenter.z - asteroid.radius) > -NEAR_CLIP) {
899	asteroid.ssbo.deleted = true;
900	} else {
901	asteroid.model_transform =
902	translate(mat4(1.0f), vec3(0.0f, 0.0f, this->asteroidSpeed * this->elapsedTime)) *
903	asteroid.model_transform;
904	}
905
906	asteroid.modified = true;
907	}
908	}
909
910	if (curTime - this->lastSpawn_asteroid > this->spawnRate_asteroid) {
911	this->lastSpawn_asteroid = curTime;
912
913	SceneObject<AsteroidVertex, SSBO_Asteroid>& asteroid = addObject(
914	asteroidObjects, asteroidPipeline,
915	addObjectIndex<AsteroidVertex>(asteroidObjects.size(),
916	addVertexNormals<AsteroidVertex>({
917
918	// front
919	{{ 1.0f, 1.0f, 1.0f}, {0.4f, 0.4f, 0.4f}},
920	{{-1.0f, 1.0f, 1.0f}, {0.4f, 0.4f, 0.4f}},
921	{{-1.0f, -1.0f, 1.0f}, {0.4f, 0.4f, 0.4f}},
922	{{ 1.0f, 1.0f, 1.0f}, {0.4f, 0.4f, 0.4f}},
923	{{-1.0f, -1.0f, 1.0f}, {0.4f, 0.4f, 0.4f}},
924	{{ 1.0f, -1.0f, 1.0f}, {0.4f, 0.4f, 0.4f}},
925
926	// top
927	{{ 1.0f, 1.0f, -1.0f}, {0.4f, 0.4f, 0.4f}},
928	{{-1.0f, 1.0f, -1.0f}, {0.4f, 0.4f, 0.4f}},
929	{{-1.0f, 1.0f, 1.0f}, {0.4f, 0.4f, 0.4f}},
930	{{ 1.0f, 1.0f, -1.0f}, {0.4f, 0.4f, 0.4f}},
931	{{-1.0f, 1.0f, 1.0f}, {0.4f, 0.4f, 0.4f}},
932	{{ 1.0f, 1.0f, 1.0f}, {0.4f, 0.4f, 0.4f}},
933
934	// bottom
935	{{ 1.0f, -1.0f, 1.0f}, {0.4f, 0.4f, 0.4f}},
936	{{-1.0f, -1.0f, 1.0f}, {0.4f, 0.4f, 0.4f}},
937	{{-1.0f, -1.0f, -1.0f}, {0.4f, 0.4f, 0.4f}},
938	{{ 1.0f, -1.0f, 1.0f}, {0.4f, 0.4f, 0.4f}},
939	{{-1.0f, -1.0f, -1.0f}, {0.4f, 0.4f, 0.4f}},
940	{{ 1.0f, -1.0f, -1.0}, {0.4f, 0.4f, 0.4f}},
941
942	// back
943	{{ 1.0f, 1.0f, -1.0f}, {0.4f, 0.4f, 0.4f}},
944	{{-1.0f, -1.0f, -1.0f}, {0.4f, 0.4f, 0.4f}},
945	{{-1.0f, 1.0f, -1.0f}, {0.4f, 0.4f, 0.4f}},
946	{{ 1.0f, 1.0f, -1.0f}, {0.4f, 0.4f, 0.4f}},
947	{{ 1.0f, -1.0f, -1.0f}, {0.4f, 0.4f, 0.4f}},
948	{{-1.0f, -1.0f, -1.0f}, {0.4f, 0.4f, 0.4f}},
949
950	// right
951	{{ 1.0f, 1.0f, -1.0f}, {0.4f, 0.4f, 0.4f}},
952	{{ 1.0f, 1.0f, 1.0f}, {0.4f, 0.4f, 0.4f}},
953	{{ 1.0f, -1.0f, 1.0f}, {0.4f, 0.4f, 0.4f}},
954	{{ 1.0f, 1.0f, -1.0f}, {0.4f, 0.4f, 0.4f}},
955	{{ 1.0f, -1.0f, 1.0f}, {0.4f, 0.4f, 0.4f}},
956	{{ 1.0f, -1.0f, -1.0f}, {0.4f, 0.4f, 0.4f}},
957
958	// left
959	{{-1.0f, 1.0f, 1.0f}, {0.4f, 0.4f, 0.4f}},
960	{{-1.0f, 1.0f, -1.0f}, {0.4f, 0.4f, 0.4f}},
961	{{-1.0f, -1.0f, -1.0f}, {0.4f, 0.4f, 0.4f}},
962	{{-1.0f, 1.0f, 1.0f}, {0.4f, 0.4f, 0.4f}},
963	{{-1.0f, -1.0f, -1.0f}, {0.4f, 0.4f, 0.4f}},
964	{{-1.0f, -1.0f, 1.0f}, {0.4f, 0.4f, 0.4f}},
965	})), {
966	0, 1, 2, 3, 4, 5,
967	6, 7, 8, 9, 10, 11,
968	12, 13, 14, 15, 16, 17,
969	18, 19, 20, 21, 22, 23,
970	24, 25, 26, 27, 28, 29,
971	30, 31, 32, 33, 34, 35,
972	}, {
973	mat4(1.0f),
974	10.0f,
975	false
976	}, true);
977
978	// This accounts for the scaling in model_base.
979	// Dividing by 8 instead of 10 since the bounding radius algorithm
980	// under-calculates the true value.
981	// TODO: Figure out the best way to take scaling into account when calculating the radius
982	// Keep in mind that the main complicating factor is the currently poor radius calculation
983	asteroid.radius /= 8.0f;
984
985	asteroid.model_base =
986	translate(mat4(1.0f), vec3(getRandomNum(-1.3f, 1.3f), -1.2f, getRandomNum(-5.5f, -4.5f))) *
987	rotate(mat4(1.0f), radians(60.0f), vec3(1.0f, 1.0f, -1.0f)) *
988	scale(mat4(1.0f), vec3(0.1f, 0.1f, 0.1f));
989	asteroid.modified = true;
990	}
991
992	for (SceneObject<ExplosionVertex, SSBO_Explosion>& explosion : this->explosionObjects) {
993	if (!explosion.ssbo.deleted) {
994	if (curTime > (explosion.ssbo.explosionStartTime + explosion.ssbo.explosionDuration)) {
995	explosion.ssbo.deleted = true;
996	explosion.modified = true;
997	}
998	}
999	}
1000
1001	for (size_t i = 0; i < shipObjects.size(); i++) {
1002	if (shipObjects[i].modified) {
1003	updateObject(shipObjects, shipPipeline, i);
1004	}
1005	}
1006
1007	for (size_t i = 0; i < modelObjects.size(); i++) {
1008	if (modelObjects[i].modified) {
1009	updateObject(modelObjects, modelPipeline, i);
1010	}
1011	}
1012
1013	for (size_t i = 0; i < asteroidObjects.size(); i++) {
1014	if (asteroidObjects[i].modified) {
1015	updateObject(asteroidObjects, asteroidPipeline, i);
1016	}
1017	}
1018
1019	for (size_t i = 0; i < laserObjects.size(); i++) {
1020	if (laserObjects[i].modified) {
1021	updateObject(laserObjects, laserPipeline, i);
1022	}
1023	}
1024
1025	for (size_t i = 0; i < explosionObjects.size(); i++) {
1026	if (explosionObjects[i].modified) {
1027	updateObject(explosionObjects, explosionPipeline, i);
1028	}
1029	}
1030
1031	explosion_UBO.cur_time = curTime;
1032
1033	VulkanUtils::copyDataToMemory(device, uniformBuffersMemory_modelPipeline[imageIndex], 0, object_VP_mats);
1034
1035	VulkanUtils::copyDataToMemory(device, uniformBuffersMemory_shipPipeline[imageIndex], 0, ship_VP_mats);
1036
1037	VulkanUtils::copyDataToMemory(device, uniformBuffersMemory_asteroidPipeline[imageIndex], 0, asteroid_VP_mats);
1038
1039	VulkanUtils::copyDataToMemory(device, uniformBuffersMemory_laserPipeline[imageIndex], 0, laser_VP_mats);
1040
1041	VulkanUtils::copyDataToMemory(device, uniformBuffersMemory_explosionPipeline[imageIndex], 0, explosion_UBO);
1042	}
1043
1044	void VulkanGame::cleanup() {
1045	// FIXME: We could wait on the Queue if we had the queue in wd-> (otherwise VulkanH functions can't use globals)
1046	//vkQueueWaitIdle(g_Queue);
1047	VKUTIL_CHECK_RESULT(vkDeviceWaitIdle(device), "failed to wait for device!");
1048
1049	cleanupImGuiOverlay();
1050
1051	cleanupSwapChain();
1052
1053	VulkanUtils::destroyVulkanImage(device, floorTextureImage);
1054	VulkanUtils::destroyVulkanImage(device, laserTextureImage);
1055
1056	vkDestroySampler(device, textureSampler, nullptr);
1057
1058	modelPipeline.cleanupBuffers();
1059	shipPipeline.cleanupBuffers();
1060	asteroidPipeline.cleanupBuffers();
1061	laserPipeline.cleanupBuffers();
1062	explosionPipeline.cleanupBuffers();
1063
1064	vkDestroyCommandPool(device, resourceCommandPool, nullptr);
1065
1066	vkDestroyDevice(device, nullptr);
1067	vkDestroySurfaceKHR(instance, vulkanSurface, nullptr);
1068
1069	if (ENABLE_VALIDATION_LAYERS) {
1070	VulkanUtils::destroyDebugUtilsMessengerEXT(instance, debugMessenger, nullptr);
1071	}
1072
1073	vkDestroyInstance(instance, nullptr);
1074
1075	gui->destroyWindow();
1076	gui->shutdown();
1077	delete gui;
1078	}
1079
1080	void VulkanGame::createVulkanInstance(const vector<const char*>& validationLayers) {
1081	if (ENABLE_VALIDATION_LAYERS && !VulkanUtils::checkValidationLayerSupport(validationLayers)) {
1082	throw runtime_error("validation layers requested, but not available!");
1083	}
1084
1085	VkApplicationInfo appInfo = {};
1086	appInfo.sType = VK_STRUCTURE_TYPE_APPLICATION_INFO;
1087	appInfo.pApplicationName = "Vulkan Game";
1088	appInfo.applicationVersion = VK_MAKE_VERSION(1, 0, 0);
1089	appInfo.pEngineName = "No Engine";
1090	appInfo.engineVersion = VK_MAKE_VERSION(1, 0, 0);
1091	appInfo.apiVersion = VK_API_VERSION_1_0;
1092
1093	VkInstanceCreateInfo createInfo = {};
1094	createInfo.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO;
1095	createInfo.pApplicationInfo = &appInfo;
1096
1097	vector<const char*> extensions = gui->getRequiredExtensions();
1098	if (ENABLE_VALIDATION_LAYERS) {
1099	extensions.push_back(VK_EXT_DEBUG_UTILS_EXTENSION_NAME);
1100	}
1101
1102	createInfo.enabledExtensionCount = static_cast<uint32_t>(extensions.size());
1103	createInfo.ppEnabledExtensionNames = extensions.data();
1104
1105	cout << endl << "Extensions:" << endl;
1106	for (const char* extensionName : extensions) {
1107	cout << extensionName << endl;
1108	}
1109	cout << endl;
1110
1111	VkDebugUtilsMessengerCreateInfoEXT debugCreateInfo;
1112	if (ENABLE_VALIDATION_LAYERS) {
1113	createInfo.enabledLayerCount = static_cast<uint32_t>(validationLayers.size());
1114	createInfo.ppEnabledLayerNames = validationLayers.data();
1115
1116	populateDebugMessengerCreateInfo(debugCreateInfo);
1117	createInfo.pNext = &debugCreateInfo;
1118	} else {
1119	createInfo.enabledLayerCount = 0;
1120
1121	createInfo.pNext = nullptr;
1122	}
1123
1124	if (vkCreateInstance(&createInfo, nullptr, &instance) != VK_SUCCESS) {
1125	throw runtime_error("failed to create instance!");
1126	}
1127	}
1128
1129	void VulkanGame::setupDebugMessenger() {
1130	if (!ENABLE_VALIDATION_LAYERS) {
1131	return;
1132	}
1133
1134	VkDebugUtilsMessengerCreateInfoEXT createInfo;
1135	populateDebugMessengerCreateInfo(createInfo);
1136
1137	if (VulkanUtils::createDebugUtilsMessengerEXT(instance, &createInfo, nullptr, &debugMessenger) != VK_SUCCESS) {
1138	throw runtime_error("failed to set up debug messenger!");
1139	}
1140	}
1141
1142	void VulkanGame::populateDebugMessengerCreateInfo(VkDebugUtilsMessengerCreateInfoEXT& createInfo) {
1143	createInfo = {};
1144	createInfo.sType = VK_STRUCTURE_TYPE_DEBUG_UTILS_MESSENGER_CREATE_INFO_EXT;
1145	createInfo.messageSeverity = VK_DEBUG_UTILS_MESSAGE_SEVERITY_VERBOSE_BIT_EXT \| VK_DEBUG_UTILS_MESSAGE_SEVERITY_WARNING_BIT_EXT \| VK_DEBUG_UTILS_MESSAGE_SEVERITY_ERROR_BIT_EXT;
1146	createInfo.messageType = VK_DEBUG_UTILS_MESSAGE_TYPE_GENERAL_BIT_EXT \| VK_DEBUG_UTILS_MESSAGE_TYPE_VALIDATION_BIT_EXT \| VK_DEBUG_UTILS_MESSAGE_TYPE_PERFORMANCE_BIT_EXT;
1147	createInfo.pfnUserCallback = debugCallback;
1148	}
1149
1150	VKAPI_ATTR VkBool32 VKAPI_CALL VulkanGame::debugCallback(
1151	VkDebugUtilsMessageSeverityFlagBitsEXT messageSeverity,
1152	VkDebugUtilsMessageTypeFlagsEXT messageType,
1153	const VkDebugUtilsMessengerCallbackDataEXT* pCallbackData,
1154	void* pUserData) {
1155	cerr << "validation layer: " << pCallbackData->pMessage << endl;
1156
1157	// TODO: Figure out what the return value means and if it should always be VK_FALSE
1158	return VK_FALSE;
1159	}
1160
1161	void VulkanGame::createVulkanSurface() {
1162	if (gui->createVulkanSurface(instance, &vulkanSurface) == RTWO_ERROR) {
1163	throw runtime_error("failed to create window surface!");
1164	}
1165	}
1166
1167	void VulkanGame::pickPhysicalDevice(const vector<const char*>& deviceExtensions) {
1168	uint32_t deviceCount = 0;
1169	// TODO: Check VkResult
1170	vkEnumeratePhysicalDevices(instance, &deviceCount, nullptr);
1171
1172	if (deviceCount == 0) {
1173	throw runtime_error("failed to find GPUs with Vulkan support!");
1174	}
1175
1176	vector<VkPhysicalDevice> devices(deviceCount);
1177	// TODO: Check VkResult
1178	vkEnumeratePhysicalDevices(instance, &deviceCount, devices.data());
1179
1180	cout << endl << "Graphics cards:" << endl;
1181	for (const VkPhysicalDevice& device : devices) {
1182	if (isDeviceSuitable(device, deviceExtensions)) {
1183	physicalDevice = device;
1184	break;
1185	}
1186	}
1187	cout << endl;
1188
1189	if (physicalDevice == VK_NULL_HANDLE) {
1190	throw runtime_error("failed to find a suitable GPU!");
1191	}
1192	}
1193
1194	bool VulkanGame::isDeviceSuitable(VkPhysicalDevice physicalDevice, const vector<const char*>& deviceExtensions) {
1195	VkPhysicalDeviceProperties deviceProperties;
1196	vkGetPhysicalDeviceProperties(physicalDevice, &deviceProperties);
1197
1198	cout << "Device: " << deviceProperties.deviceName << endl;
1199
1200	// TODO: Eventually, maybe let the user pick out of a set of GPUs in case the user does want to use
1201	// an integrated GPU. On my laptop, this function returns TRUE for the integrated GPU, but crashes
1202	// when trying to use it to render. Maybe I just need to figure out which other extensions and features
1203	// to check.
1204	if (deviceProperties.deviceType != VkPhysicalDeviceType::VK_PHYSICAL_DEVICE_TYPE_DISCRETE_GPU) {
1205	return false;
1206	}
1207
1208	QueueFamilyIndices indices = VulkanUtils::findQueueFamilies(physicalDevice, vulkanSurface);
1209	bool extensionsSupported = VulkanUtils::checkDeviceExtensionSupport(physicalDevice, deviceExtensions);
1210	bool swapChainAdequate = false;
1211
1212	if (extensionsSupported) {
1213	vector<VkSurfaceFormatKHR> formats = VulkanUtils::querySwapChainFormats(physicalDevice, vulkanSurface);
1214	vector<VkPresentModeKHR> presentModes = VulkanUtils::querySwapChainPresentModes(physicalDevice, vulkanSurface);
1215
1216	swapChainAdequate = !formats.empty() && !presentModes.empty();
1217	}
1218
1219	VkPhysicalDeviceFeatures supportedFeatures;
1220	vkGetPhysicalDeviceFeatures(physicalDevice, &supportedFeatures);
1221
1222	return indices.isComplete() && extensionsSupported && swapChainAdequate && supportedFeatures.samplerAnisotropy;
1223	}
1224
1225	void VulkanGame::createLogicalDevice(const vector<const char*>& validationLayers,
1226	const vector<const char*>& deviceExtensions) {
1227	QueueFamilyIndices indices = VulkanUtils::findQueueFamilies(physicalDevice, vulkanSurface);
1228
1229	if (!indices.isComplete()) {
1230	throw runtime_error("failed to find required queue families!");
1231	}
1232
1233	// TODO: Using separate graphics and present queues currently works, but I should verify that I'm
1234	// using them correctly to get the most benefit out of separate queues
1235
1236	vector<VkDeviceQueueCreateInfo> queueCreateInfoList;
1237	set<uint32_t> uniqueQueueFamilies = { indices.graphicsFamily.value(), indices.presentFamily.value() };
1238
1239	float queuePriority = 1.0f;
1240	for (uint32_t queueFamily : uniqueQueueFamilies) {
1241	VkDeviceQueueCreateInfo queueCreateInfo = {};
1242	queueCreateInfo.sType = VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO;
1243	queueCreateInfo.queueCount = 1;
1244	queueCreateInfo.queueFamilyIndex = queueFamily;
1245	queueCreateInfo.pQueuePriorities = &queuePriority;
1246
1247	queueCreateInfoList.push_back(queueCreateInfo);
1248	}
1249
1250	VkPhysicalDeviceFeatures deviceFeatures = {};
1251	deviceFeatures.samplerAnisotropy = VK_TRUE;
1252
1253	VkDeviceCreateInfo createInfo = {};
1254	createInfo.sType = VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO;
1255
1256	createInfo.queueCreateInfoCount = static_cast<uint32_t>(queueCreateInfoList.size());
1257	createInfo.pQueueCreateInfos = queueCreateInfoList.data();
1258
1259	createInfo.pEnabledFeatures = &deviceFeatures;
1260
1261	createInfo.enabledExtensionCount = static_cast<uint32_t>(deviceExtensions.size());
1262	createInfo.ppEnabledExtensionNames = deviceExtensions.data();
1263
1264	// These fields are ignored by up-to-date Vulkan implementations,
1265	// but it's a good idea to set them for backwards compatibility
1266	if (ENABLE_VALIDATION_LAYERS) {
1267	createInfo.enabledLayerCount = static_cast<uint32_t>(validationLayers.size());
1268	createInfo.ppEnabledLayerNames = validationLayers.data();
1269	} else {
1270	createInfo.enabledLayerCount = 0;
1271	}
1272
1273	if (vkCreateDevice(physicalDevice, &createInfo, nullptr, &device) != VK_SUCCESS) {
1274	throw runtime_error("failed to create logical device!");
1275	}
1276
1277	vkGetDeviceQueue(device, indices.graphicsFamily.value(), 0, &graphicsQueue);
1278	vkGetDeviceQueue(device, indices.presentFamily.value(), 0, &presentQueue);
1279	}
1280
1281	void VulkanGame::chooseSwapChainProperties() {
1282	vector<VkSurfaceFormatKHR> availableFormats = VulkanUtils::querySwapChainFormats(physicalDevice, vulkanSurface);
1283	vector<VkPresentModeKHR> availablePresentModes = VulkanUtils::querySwapChainPresentModes(physicalDevice, vulkanSurface);
1284
1285	swapChainSurfaceFormat = VulkanUtils::chooseSwapSurfaceFormat(availableFormats,
1286	{ VK_FORMAT_B8G8R8A8_UNORM, VK_FORMAT_R8G8B8A8_UNORM, VK_FORMAT_B8G8R8_UNORM, VK_FORMAT_R8G8B8_UNORM },
1287	VK_COLOR_SPACE_SRGB_NONLINEAR_KHR);
1288
1289	vector<VkPresentModeKHR> presentModes{
1290	VK_PRESENT_MODE_MAILBOX_KHR, VK_PRESENT_MODE_IMMEDIATE_KHR, VK_PRESENT_MODE_FIFO_KHR
1291	};
1292	//vector<VkPresentModeKHR> presentModes{ VK_PRESENT_MODE_FIFO_KHR };
1293
1294	swapChainPresentMode = VulkanUtils::chooseSwapPresentMode(availablePresentModes, presentModes);
1295
1296	cout << "[vulkan] Selected PresentMode = " << swapChainPresentMode << endl;
1297
1298	VkSurfaceCapabilitiesKHR capabilities = VulkanUtils::querySwapChainCapabilities(physicalDevice, vulkanSurface);
1299
1300	if (swapChainPresentMode == VK_PRESENT_MODE_MAILBOX_KHR) {
1301	swapChainMinImageCount = 3;
1302	} else if (swapChainPresentMode == VK_PRESENT_MODE_FIFO_KHR \|\| swapChainPresentMode == VK_PRESENT_MODE_FIFO_RELAXED_KHR) {
1303	swapChainMinImageCount = 2;
1304	} else if (swapChainPresentMode == VK_PRESENT_MODE_IMMEDIATE_KHR) {
1305	swapChainMinImageCount = 1;
1306	} else {
1307	throw runtime_error("unexpected present mode!");
1308	}
1309
1310	if (swapChainMinImageCount < capabilities.minImageCount) {
1311	swapChainMinImageCount = capabilities.minImageCount;
1312	} else if (capabilities.maxImageCount != 0 && swapChainMinImageCount > capabilities.maxImageCount) {
1313	swapChainMinImageCount = capabilities.maxImageCount;
1314	}
1315	}
1316
1317	void VulkanGame::createSwapChain() {
1318	VkSurfaceCapabilitiesKHR capabilities = VulkanUtils::querySwapChainCapabilities(physicalDevice, vulkanSurface);
1319
1320	swapChainExtent = VulkanUtils::chooseSwapExtent(capabilities, gui->getWindowWidth(), gui->getWindowHeight());
1321
1322	VkSwapchainCreateInfoKHR createInfo = {};
1323	createInfo.sType = VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR;
1324	createInfo.surface = vulkanSurface;
1325	createInfo.minImageCount = swapChainMinImageCount;
1326	createInfo.imageFormat = swapChainSurfaceFormat.format;
1327	createInfo.imageColorSpace = swapChainSurfaceFormat.colorSpace;
1328	createInfo.imageExtent = swapChainExtent;
1329	createInfo.imageArrayLayers = 1;
1330	createInfo.imageUsage = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
1331
1332	// TODO: Maybe save this result so I don't have to recalculate it every time
1333	QueueFamilyIndices indices = VulkanUtils::findQueueFamilies(physicalDevice, vulkanSurface);
1334	uint32_t queueFamilyIndices[] = { indices.graphicsFamily.value(), indices.presentFamily.value() };
1335
1336	if (indices.graphicsFamily != indices.presentFamily) {
1337	createInfo.imageSharingMode = VK_SHARING_MODE_CONCURRENT;
1338	createInfo.queueFamilyIndexCount = 2;
1339	createInfo.pQueueFamilyIndices = queueFamilyIndices;
1340	} else {
1341	createInfo.imageSharingMode = VK_SHARING_MODE_EXCLUSIVE;
1342	createInfo.queueFamilyIndexCount = 0;
1343	createInfo.pQueueFamilyIndices = nullptr;
1344	}
1345
1346	createInfo.preTransform = capabilities.currentTransform;
1347	createInfo.compositeAlpha = VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR;
1348	createInfo.presentMode = swapChainPresentMode;
1349	createInfo.clipped = VK_TRUE;
1350	createInfo.oldSwapchain = VK_NULL_HANDLE;
1351
1352	if (vkCreateSwapchainKHR(device, &createInfo, nullptr, &swapChain) != VK_SUCCESS) {
1353	throw runtime_error("failed to create swap chain!");
1354	}
1355
1356	if (vkGetSwapchainImagesKHR(device, swapChain, &swapChainImageCount, nullptr) != VK_SUCCESS) {
1357	throw runtime_error("failed to get swap chain image count!");
1358	}
1359
1360	swapChainImages.resize(swapChainImageCount);
1361	if (vkGetSwapchainImagesKHR(device, swapChain, &swapChainImageCount, swapChainImages.data()) != VK_SUCCESS) {
1362	throw runtime_error("failed to get swap chain images!");
1363	}
1364	}
1365
1366	void VulkanGame::createImageViews() {
1367	swapChainImageViews.resize(swapChainImageCount);
1368
1369	for (size_t i = 0; i < swapChainImageCount; i++) {
1370	swapChainImageViews[i] = VulkanUtils::createImageView(device, swapChainImages[i], swapChainSurfaceFormat.format,
1371	VK_IMAGE_ASPECT_COLOR_BIT);
1372	}
1373	}
1374
1375	void VulkanGame::createResourceCommandPool() {
1376	QueueFamilyIndices indices = VulkanUtils::findQueueFamilies(physicalDevice, vulkanSurface);
1377
1378	VkCommandPoolCreateInfo poolInfo = {};
1379	poolInfo.sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO;
1380	poolInfo.queueFamilyIndex = indices.graphicsFamily.value();
1381	poolInfo.flags = 0;
1382
1383	if (vkCreateCommandPool(device, &poolInfo, nullptr, &resourceCommandPool) != VK_SUCCESS) {
1384	throw runtime_error("failed to create resource command pool!");
1385	}
1386	}
1387
1388	void VulkanGame::createImageResources() {
1389	VulkanUtils::createDepthImage(device, physicalDevice, resourceCommandPool, findDepthFormat(), swapChainExtent,
1390	depthImage, graphicsQueue);
1391
1392	createTextureSampler();
1393
1394	// TODO: Move all images/textures somewhere into the assets folder
1395
1396	VulkanUtils::createVulkanImageFromFile(device, physicalDevice, resourceCommandPool, "textures/texture.jpg",
1397	floorTextureImage, graphicsQueue);
1398
1399	floorTextureImageDescriptor = {};
1400	floorTextureImageDescriptor.imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
1401	floorTextureImageDescriptor.imageView = floorTextureImage.imageView;
1402	floorTextureImageDescriptor.sampler = textureSampler;
1403
1404	VulkanUtils::createVulkanImageFromFile(device, physicalDevice, resourceCommandPool, "textures/laser.png",
1405	laserTextureImage, graphicsQueue);
1406
1407	laserTextureImageDescriptor = {};
1408	laserTextureImageDescriptor.imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
1409	laserTextureImageDescriptor.imageView = laserTextureImage.imageView;
1410	laserTextureImageDescriptor.sampler = textureSampler;
1411	}
1412
1413	VkFormat VulkanGame::findDepthFormat() {
1414	return VulkanUtils::findSupportedFormat(
1415	physicalDevice,
1416	{ VK_FORMAT_D32_SFLOAT, VK_FORMAT_D32_SFLOAT_S8_UINT, VK_FORMAT_D24_UNORM_S8_UINT },
1417	VK_IMAGE_TILING_OPTIMAL,
1418	VK_FORMAT_FEATURE_DEPTH_STENCIL_ATTACHMENT_BIT
1419	);
1420	}
1421
1422	void VulkanGame::createRenderPass() {
1423	VkAttachmentDescription colorAttachment = {};
1424	colorAttachment.format = swapChainSurfaceFormat.format;
1425	colorAttachment.samples = VK_SAMPLE_COUNT_1_BIT;
1426	colorAttachment.loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
1427	colorAttachment.storeOp = VK_ATTACHMENT_STORE_OP_STORE;
1428	colorAttachment.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
1429	colorAttachment.stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
1430	colorAttachment.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
1431	colorAttachment.finalLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR;
1432
1433	VkAttachmentReference colorAttachmentRef = {};
1434	colorAttachmentRef.attachment = 0;
1435	colorAttachmentRef.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
1436
1437	VkAttachmentDescription depthAttachment = {};
1438	depthAttachment.format = findDepthFormat();
1439	depthAttachment.samples = VK_SAMPLE_COUNT_1_BIT;
1440	depthAttachment.loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
1441	depthAttachment.storeOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
1442	depthAttachment.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
1443	depthAttachment.stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
1444	depthAttachment.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
1445	depthAttachment.finalLayout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
1446
1447	VkAttachmentReference depthAttachmentRef = {};
1448	depthAttachmentRef.attachment = 1;
1449	depthAttachmentRef.layout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
1450
1451	VkSubpassDescription subpass = {};
1452	subpass.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS;
1453	subpass.colorAttachmentCount = 1;
1454	subpass.pColorAttachments = &colorAttachmentRef;
1455	subpass.pDepthStencilAttachment = &depthAttachmentRef;
1456
1457	VkSubpassDependency dependency = {};
1458	dependency.srcSubpass = VK_SUBPASS_EXTERNAL;
1459	dependency.dstSubpass = 0;
1460	dependency.srcStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
1461	dependency.srcAccessMask = 0;
1462	dependency.dstStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
1463	dependency.dstAccessMask = VK_ACCESS_COLOR_ATTACHMENT_READ_BIT \| VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
1464
1465	array<VkAttachmentDescription, 2> attachments = { colorAttachment, depthAttachment };
1466	VkRenderPassCreateInfo renderPassInfo = {};
1467	renderPassInfo.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO;
1468	renderPassInfo.attachmentCount = static_cast<uint32_t>(attachments.size());
1469	renderPassInfo.pAttachments = attachments.data();
1470	renderPassInfo.subpassCount = 1;
1471	renderPassInfo.pSubpasses = &subpass;
1472	renderPassInfo.dependencyCount = 1;
1473	renderPassInfo.pDependencies = &dependency;
1474
1475	if (vkCreateRenderPass(device, &renderPassInfo, nullptr, &renderPass) != VK_SUCCESS) {
1476	throw runtime_error("failed to create render pass!");
1477	}
1478	}
1479
1480	void VulkanGame::createCommandPools() {
1481	commandPools.resize(swapChainImageCount);
1482
1483	QueueFamilyIndices indices = VulkanUtils::findQueueFamilies(physicalDevice, vulkanSurface);
1484
1485	for (size_t i = 0; i < swapChainImageCount; i++) {
1486	VkCommandPoolCreateInfo poolInfo = {};
1487	poolInfo.sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO;
1488	poolInfo.queueFamilyIndex = indices.graphicsFamily.value();
1489	poolInfo.flags = VK_COMMAND_POOL_CREATE_RESET_COMMAND_BUFFER_BIT;
1490
1491	VKUTIL_CHECK_RESULT(vkCreateCommandPool(device, &poolInfo, nullptr, &commandPools[i]),
1492	"failed to create graphics command pool!");
1493	}
1494	}
1495
1496	void VulkanGame::createTextureSampler() {
1497	VkSamplerCreateInfo samplerInfo = {};
1498	samplerInfo.sType = VK_STRUCTURE_TYPE_SAMPLER_CREATE_INFO;
1499	samplerInfo.magFilter = VK_FILTER_LINEAR;
1500	samplerInfo.minFilter = VK_FILTER_LINEAR;
1501
1502	samplerInfo.addressModeU = VK_SAMPLER_ADDRESS_MODE_REPEAT;
1503	samplerInfo.addressModeV = VK_SAMPLER_ADDRESS_MODE_REPEAT;
1504	samplerInfo.addressModeW = VK_SAMPLER_ADDRESS_MODE_REPEAT;
1505
1506	samplerInfo.anisotropyEnable = VK_TRUE;
1507	samplerInfo.maxAnisotropy = 16;
1508	samplerInfo.borderColor = VK_BORDER_COLOR_INT_OPAQUE_BLACK;
1509	samplerInfo.unnormalizedCoordinates = VK_FALSE;
1510	samplerInfo.compareEnable = VK_FALSE;
1511	samplerInfo.compareOp = VK_COMPARE_OP_ALWAYS;
1512	samplerInfo.mipmapMode = VK_SAMPLER_MIPMAP_MODE_LINEAR;
1513	samplerInfo.mipLodBias = 0.0f;
1514	samplerInfo.minLod = 0.0f;
1515	samplerInfo.maxLod = 0.0f;
1516
1517	VKUTIL_CHECK_RESULT(vkCreateSampler(device, &samplerInfo, nullptr, &textureSampler),
1518	"failed to create texture sampler!");
1519	}
1520
1521	void VulkanGame::createFramebuffers() {
1522	swapChainFramebuffers.resize(swapChainImageCount);
1523
1524	VkFramebufferCreateInfo framebufferInfo = {};
1525	framebufferInfo.sType = VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO;
1526	framebufferInfo.renderPass = renderPass;
1527	framebufferInfo.width = swapChainExtent.width;
1528	framebufferInfo.height = swapChainExtent.height;
1529	framebufferInfo.layers = 1;
1530
1531	for (uint32_t i = 0; i < swapChainImageCount; i++) {
1532	array<VkImageView, 2> attachments = {
1533	swapChainImageViews[i],
1534	depthImage.imageView
1535	};
1536
1537	framebufferInfo.attachmentCount = static_cast<uint32_t>(attachments.size());
1538	framebufferInfo.pAttachments = attachments.data();
1539
1540	if (vkCreateFramebuffer(device, &framebufferInfo, nullptr, &swapChainFramebuffers[i]) != VK_SUCCESS) {
1541	throw runtime_error("failed to create framebuffer!");
1542	}
1543	}
1544	}
1545
1546	void VulkanGame::createCommandBuffers() {
1547	commandBuffers.resize(swapChainImageCount);
1548
1549	for (size_t i = 0; i < swapChainImageCount; i++) {
1550	VkCommandBufferAllocateInfo allocInfo = {};
1551	allocInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO;
1552	allocInfo.commandPool = commandPools[i];
1553	allocInfo.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY;
1554	allocInfo.commandBufferCount = 1;
1555
1556	if (vkAllocateCommandBuffers(device, &allocInfo, &commandBuffers[i]) != VK_SUCCESS) {
1557	throw runtime_error("failed to allocate command buffer!");
1558	}
1559	}
1560	}
1561
1562	void VulkanGame::createSyncObjects() {
1563	imageAcquiredSemaphores.resize(swapChainImageCount);
1564	renderCompleteSemaphores.resize(swapChainImageCount);
1565	inFlightFences.resize(swapChainImageCount);
1566
1567	VkSemaphoreCreateInfo semaphoreInfo = {};
1568	semaphoreInfo.sType = VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO;
1569
1570	VkFenceCreateInfo fenceInfo = {};
1571	fenceInfo.sType = VK_STRUCTURE_TYPE_FENCE_CREATE_INFO;
1572	fenceInfo.flags = VK_FENCE_CREATE_SIGNALED_BIT;
1573
1574	for (size_t i = 0; i < swapChainImageCount; i++) {
1575	VKUTIL_CHECK_RESULT(vkCreateSemaphore(device, &semaphoreInfo, nullptr, &imageAcquiredSemaphores[i]),
1576	"failed to create image acquired sempahore for a frame!");
1577
1578	VKUTIL_CHECK_RESULT(vkCreateSemaphore(device, &semaphoreInfo, nullptr, &renderCompleteSemaphores[i]),
1579	"failed to create render complete sempahore for a frame!");
1580
1581	VKUTIL_CHECK_RESULT(vkCreateFence(device, &fenceInfo, nullptr, &inFlightFences[i]),
1582	"failed to create fence for a frame!");
1583	}
1584	}
1585
1586	void VulkanGame::renderFrame(ImDrawData* draw_data) {
1587	VkResult result = vkAcquireNextImageKHR(device, swapChain, numeric_limits<uint64_t>::max(),
1588	imageAcquiredSemaphores[currentFrame], VK_NULL_HANDLE, &imageIndex);
1589
1590	if (result == VK_SUBOPTIMAL_KHR) {
1591	shouldRecreateSwapChain = true;
1592	} else if (result == VK_ERROR_OUT_OF_DATE_KHR) {
1593	shouldRecreateSwapChain = true;
1594	return;
1595	} else {
1596	VKUTIL_CHECK_RESULT(result, "failed to acquire swap chain image!");
1597	}
1598
1599	VKUTIL_CHECK_RESULT(
1600	vkWaitForFences(device, 1, &inFlightFences[imageIndex], VK_TRUE, numeric_limits<uint64_t>::max()),
1601	"failed waiting for fence!");
1602
1603	VKUTIL_CHECK_RESULT(vkResetFences(device, 1, &inFlightFences[imageIndex]),
1604	"failed to reset fence!");
1605
1606	VKUTIL_CHECK_RESULT(vkResetCommandPool(device, commandPools[imageIndex], 0),
1607	"failed to reset command pool!");
1608
1609	VkCommandBufferBeginInfo beginInfo = {};
1610	beginInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
1611	beginInfo.flags = VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT;
1612
1613	VKUTIL_CHECK_RESULT(vkBeginCommandBuffer(commandBuffers[imageIndex], &beginInfo),
1614	"failed to begin recording command buffer!");
1615
1616	VkRenderPassBeginInfo renderPassInfo = {};
1617	renderPassInfo.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO;
1618	renderPassInfo.renderPass = renderPass;
1619	renderPassInfo.framebuffer = swapChainFramebuffers[imageIndex];
1620	renderPassInfo.renderArea.offset = { 0, 0 };
1621	renderPassInfo.renderArea.extent = swapChainExtent;
1622
1623	array<VkClearValue, 2> clearValues = {};
1624	clearValues[0].color = { { 0.0f, 0.0f, 0.0f, 1.0f } };
1625	clearValues[1].depthStencil = { 1.0f, 0 };
1626
1627	renderPassInfo.clearValueCount = static_cast<uint32_t>(clearValues.size());
1628	renderPassInfo.pClearValues = clearValues.data();
1629
1630	vkCmdBeginRenderPass(commandBuffers[imageIndex], &renderPassInfo, VK_SUBPASS_CONTENTS_INLINE);
1631
1632	// TODO: Find a more elegant, per-screen solution for this
1633	if (currentRenderScreenFn == &VulkanGame::renderGameScreen) {
1634	modelPipeline.createRenderCommands(commandBuffers[imageIndex], imageIndex);
1635	shipPipeline.createRenderCommands(commandBuffers[imageIndex], imageIndex);
1636	asteroidPipeline.createRenderCommands(commandBuffers[imageIndex], imageIndex);
1637	laserPipeline.createRenderCommands(commandBuffers[imageIndex], imageIndex);
1638	explosionPipeline.createRenderCommands(commandBuffers[imageIndex], imageIndex);
1639	}
1640
1641	ImGui_ImplVulkan_RenderDrawData(draw_data, commandBuffers[imageIndex]);
1642
1643	vkCmdEndRenderPass(commandBuffers[imageIndex]);
1644
1645	VKUTIL_CHECK_RESULT(vkEndCommandBuffer(commandBuffers[imageIndex]),
1646	"failed to record command buffer!");
1647
1648	VkSemaphore waitSemaphores[] = { imageAcquiredSemaphores[currentFrame] };
1649	VkPipelineStageFlags waitStages[] = { VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT };
1650	VkSemaphore signalSemaphores[] = { renderCompleteSemaphores[currentFrame] };
1651
1652	VkSubmitInfo submitInfo = {};
1653	submitInfo.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
1654	submitInfo.waitSemaphoreCount = 1;
1655	submitInfo.pWaitSemaphores = waitSemaphores;
1656	submitInfo.pWaitDstStageMask = waitStages;
1657	submitInfo.commandBufferCount = 1;
1658	submitInfo.pCommandBuffers = &commandBuffers[imageIndex];
1659	submitInfo.signalSemaphoreCount = 1;
1660	submitInfo.pSignalSemaphores = signalSemaphores;
1661
1662	VKUTIL_CHECK_RESULT(vkQueueSubmit(graphicsQueue, 1, &submitInfo, inFlightFences[imageIndex]),
1663	"failed to submit draw command buffer!");
1664	}
1665
1666	void VulkanGame::presentFrame() {
1667	VkSemaphore signalSemaphores[] = { renderCompleteSemaphores[currentFrame] };
1668
1669	VkPresentInfoKHR presentInfo = {};
1670	presentInfo.sType = VK_STRUCTURE_TYPE_PRESENT_INFO_KHR;
1671	presentInfo.waitSemaphoreCount = 1;
1672	presentInfo.pWaitSemaphores = signalSemaphores;
1673	presentInfo.swapchainCount = 1;
1674	presentInfo.pSwapchains = &swapChain;
1675	presentInfo.pImageIndices = &imageIndex;
1676	presentInfo.pResults = nullptr;
1677
1678	VkResult result = vkQueuePresentKHR(presentQueue, &presentInfo);
1679
1680	if (result == VK_SUBOPTIMAL_KHR) {
1681	shouldRecreateSwapChain = true;
1682	} else if (result == VK_ERROR_OUT_OF_DATE_KHR) {
1683	shouldRecreateSwapChain = true;
1684	return;
1685	} else {
1686	VKUTIL_CHECK_RESULT(result, "failed to present swap chain image!");
1687	}
1688
1689	currentFrame = (currentFrame + 1) % swapChainImageCount;
1690	}
1691
1692	void VulkanGame::initImGuiOverlay() {
1693	vector<VkDescriptorPoolSize> pool_sizes{
1694	{ VK_DESCRIPTOR_TYPE_SAMPLER, 1000 },
1695	{ VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1000 },
1696	{ VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE, 1000 },
1697	{ VK_DESCRIPTOR_TYPE_STORAGE_IMAGE, 1000 },
1698	{ VK_DESCRIPTOR_TYPE_UNIFORM_TEXEL_BUFFER, 1000 },
1699	{ VK_DESCRIPTOR_TYPE_STORAGE_TEXEL_BUFFER, 1000 },
1700	{ VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 1000 },
1701	{ VK_DESCRIPTOR_TYPE_STORAGE_BUFFER, 1000 },
1702	{ VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER_DYNAMIC, 1000 },
1703	{ VK_DESCRIPTOR_TYPE_STORAGE_BUFFER_DYNAMIC, 1000 },
1704	{ VK_DESCRIPTOR_TYPE_INPUT_ATTACHMENT, 1000 }
1705	};
1706
1707	VkDescriptorPoolCreateInfo pool_info = {};
1708	pool_info.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_POOL_CREATE_INFO;
1709	pool_info.flags = VK_DESCRIPTOR_POOL_CREATE_FREE_DESCRIPTOR_SET_BIT;
1710	pool_info.maxSets = 1000 * pool_sizes.size();
1711	pool_info.poolSizeCount = static_cast<uint32_t>(pool_sizes.size());
1712	pool_info.pPoolSizes = pool_sizes.data();
1713
1714	VKUTIL_CHECK_RESULT(vkCreateDescriptorPool(device, &pool_info, nullptr, &imguiDescriptorPool),
1715	"failed to create IMGUI descriptor pool!");
1716
1717	// TODO: Do this in one place and save it instead of redoing it every time I need a queue family index
1718	QueueFamilyIndices indices = VulkanUtils::findQueueFamilies(physicalDevice, vulkanSurface);
1719
1720	// Setup Dear ImGui context
1721	IMGUI_CHECKVERSION();
1722	ImGui::CreateContext();
1723	ImGuiIO& io = ImGui::GetIO();
1724	//io.ConfigFlags \|= ImGuiConfigFlags_NavEnableKeyboard; // Enable Keyboard Controls
1725	//io.ConfigFlags \|= ImGuiConfigFlags_NavEnableGamepad; // Enable Gamepad Controls
1726
1727	// Setup Dear ImGui style
1728	ImGui::StyleColorsDark();
1729	//ImGui::StyleColorsClassic();
1730
1731	// Setup Platform/Renderer bindings
1732	ImGui_ImplSDL2_InitForVulkan(window);
1733	ImGui_ImplVulkan_InitInfo init_info = {};
1734	init_info.Instance = instance;
1735	init_info.PhysicalDevice = physicalDevice;
1736	init_info.Device = device;
1737	init_info.QueueFamily = indices.graphicsFamily.value();
1738	init_info.Queue = graphicsQueue;
1739	init_info.DescriptorPool = imguiDescriptorPool;
1740	init_info.Allocator = nullptr;
1741	init_info.MinImageCount = swapChainMinImageCount;
1742	init_info.ImageCount = swapChainImageCount;
1743	init_info.CheckVkResultFn = check_imgui_vk_result;
1744	ImGui_ImplVulkan_Init(&init_info, renderPass);
1745
1746	// Load Fonts
1747	// - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
1748	// - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
1749	// - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
1750	// - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
1751	// - Read 'docs/FONTS.md' for more instructions and details.
1752	// - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
1753	//io.Fonts->AddFontDefault();
1754	//io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);
1755	//io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 15.0f);
1756	//io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf", 16.0f);
1757	//io.Fonts->AddFontFromFileTTF("../../misc/fonts/ProggyTiny.ttf", 10.0f);
1758	//ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
1759	//assert(font != NULL);
1760
1761	// Upload Fonts
1762	{
1763	VkCommandBuffer commandBuffer = VulkanUtils::beginSingleTimeCommands(device, resourceCommandPool);
1764
1765	ImGui_ImplVulkan_CreateFontsTexture(commandBuffer);
1766
1767	VulkanUtils::endSingleTimeCommands(device, resourceCommandPool, commandBuffer, graphicsQueue);
1768
1769	ImGui_ImplVulkan_DestroyFontUploadObjects();
1770	}
1771	}
1772
1773	void VulkanGame::cleanupImGuiOverlay() {
1774	ImGui_ImplVulkan_Shutdown();
1775	ImGui_ImplSDL2_Shutdown();
1776	ImGui::DestroyContext();
1777
1778	vkDestroyDescriptorPool(device, imguiDescriptorPool, nullptr);
1779	}
1780
1781	void VulkanGame::createBufferSet(VkDeviceSize bufferSize, VkBufferUsageFlags flags,
1782	vector<VkBuffer>& buffers, vector<VkDeviceMemory>& buffersMemory, vector<VkDescriptorBufferInfo>& bufferInfoList) {
1783	buffers.resize(swapChainImageCount);
1784	buffersMemory.resize(swapChainImageCount);
1785	bufferInfoList.resize(swapChainImageCount);
1786
1787	for (size_t i = 0; i < swapChainImageCount; i++) {
1788	VulkanUtils::createBuffer(device, physicalDevice, bufferSize, flags,
1789	VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT \| VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
1790	buffers[i], buffersMemory[i]);
1791
1792	bufferInfoList[i].buffer = buffers[i];
1793	bufferInfoList[i].offset = 0; // This is the offset from the start of the buffer, so always 0 for now
1794	bufferInfoList[i].range = bufferSize; // Size of the update starting from offset, or VK_WHOLE_SIZE
1795	}
1796	}
1797
1798	void VulkanGame::addLaser(vec3 start, vec3 end, vec3 color, float width) {
1799	vec3 ray = end - start;
1800	float length = glm::length(ray);
1801
1802	SceneObject<LaserVertex, SSBO_Laser>& laser = addObject(
1803	laserObjects, laserPipeline,
1804	addObjectIndex<LaserVertex>(laserObjects.size(), {
1805	{{ width / 2, 0.0f, -width / 2 }, {1.0f, 0.5f }},
1806	{{-width / 2, 0.0f, -width / 2 }, {0.0f, 0.5f }},
1807	{{-width / 2, 0.0f, 0.0f }, {0.0f, 0.0f }},
1808	{{ width / 2, 0.0f, 0.0f }, {1.0f, 0.0f }},
1809	{{ width / 2, 0.0f, -length + width / 2}, {1.0f, 0.51f}},
1810	{{-width / 2, 0.0f, -length + width / 2}, {0.0f, 0.51f}},
1811	{{ width / 2, 0.0f, -length, }, {1.0f, 1.0f }},
1812	{{-width / 2, 0.0f, -length }, {0.0f, 1.0f }}
1813	}), {
1814	0, 1, 2, 0, 2, 3,
1815	4, 5, 1, 4, 1, 0,
1816	6, 7, 5, 6, 5, 4
1817	}, {
1818	mat4(1.0f),
1819	color,
1820	false
1821	}, true);
1822
1823	float xAxisRotation = asin(ray.y / length);
1824	float yAxisRotation = atan2(-ray.x, -ray.z);
1825
1826	vec3 normal(rotate(mat4(1.0f), yAxisRotation, vec3(0.0f, 1.0f, 0.0f)) *
1827	rotate(mat4(1.0f), xAxisRotation, vec3(1.0f, 0.0f, 0.0f)) *
1828	vec4(0.0f, 1.0f, 0.0f, 1.0f));
1829
1830	// To project point P onto line AB:
1831	// projection = A + dot(AP,AB) / dot(AB,AB) * AB
1832	vec3 projOnLaser = start + glm::dot(this->cam_pos - start, ray) / (length * length) * ray;
1833	vec3 laserToCam = this->cam_pos - projOnLaser;
1834
1835	float zAxisRotation = -atan2(glm::dot(glm::cross(normal, laserToCam), glm::normalize(ray)), glm::dot(normal, laserToCam));
1836
1837	laser.targetAsteroid = nullptr;
1838
1839	laser.model_base =
1840	rotate(mat4(1.0f), zAxisRotation, vec3(0.0f, 0.0f, 1.0f));
1841
1842	laser.model_transform =
1843	translate(mat4(1.0f), start) *
1844	rotate(mat4(1.0f), yAxisRotation, vec3(0.0f, 1.0f, 0.0f)) *
1845	rotate(mat4(1.0f), xAxisRotation, vec3(1.0f, 0.0f, 0.0f));
1846
1847	laser.modified = true;
1848	}
1849
1850	void VulkanGame::translateLaser(size_t index, const vec3& translation) {
1851	SceneObject<LaserVertex, SSBO_Laser>& laser = this->laserObjects[index];
1852
1853	// TODO: A lot of the values calculated here can be calculated once and saved when the laser is created,
1854	// and then re-used here
1855
1856	vec3 start = vec3(laser.model_transform * vec4(0.0f, 0.0f, 0.0f, 1.0f));
1857	vec3 end = vec3(laser.model_transform * vec4(0.0f, 0.0f, laser.vertices[6].pos.z, 1.0f));
1858
1859	vec3 ray = end - start;
1860	float length = glm::length(ray);
1861
1862	float xAxisRotation = asin(ray.y / length);
1863	float yAxisRotation = atan2(-ray.x, -ray.z);
1864
1865	vec3 normal(rotate(mat4(1.0f), yAxisRotation, vec3(0.0f, 1.0f, 0.0f)) *
1866	rotate(mat4(1.0f), xAxisRotation, vec3(1.0f, 0.0f, 0.0f)) *
1867	vec4(0.0f, 1.0f, 0.0f, 1.0f));
1868
1869	// To project point P onto line AB:
1870	// projection = A + dot(AP,AB) / dot(AB,AB) * AB
1871	vec3 projOnLaser = start + glm::dot(cam_pos - start, ray) / (lengthlength) ray;
1872	vec3 laserToCam = cam_pos - projOnLaser;
1873
1874	float zAxisRotation = -atan2(glm::dot(glm::cross(normal, laserToCam), glm::normalize(ray)), glm::dot(normal, laserToCam));
1875
1876	laser.model_base = rotate(mat4(1.0f), zAxisRotation, vec3(0.0f, 0.0f, 1.0f));
1877	laser.model_transform = translate(mat4(1.0f), translation) * laser.model_transform;
1878
1879	laser.modified = true;
1880	}
1881
1882	void VulkanGame::updateLaserTarget(size_t index) {
1883	SceneObject<LaserVertex, SSBO_Laser>& laser = this->laserObjects[index];
1884
1885	// TODO: A lot of the values calculated here can be calculated once and saved when the laser is created,
1886	// and then re-used here
1887
1888	vec3 start = vec3(laser.model_transform * vec4(0.0f, 0.0f, 0.0f, 1.0f));
1889	vec3 end = vec3(laser.model_transform * vec4(0.0f, 0.0f, laser.vertices[6].pos.z, 1.0f));
1890
1891	vec3 intersection(0.0f), closestIntersection(0.0f);
1892	SceneObject<AsteroidVertex, SSBO_Asteroid>* closestAsteroid = nullptr;
1893	unsigned int closestAsteroidIndex = -1;
1894
1895	for (int i = 0; i < this->asteroidObjects.size(); i++) {
1896	if (!this->asteroidObjects[i].ssbo.deleted &&
1897	this->getLaserAndAsteroidIntersection(this->asteroidObjects[i], start, end, intersection)) {
1898	// TODO: Implement a more generic algorithm for testing the closest object by getting the distance between the points
1899	// TODO: Also check which intersection is close to the start of the laser. This would make the algorithm work
1900	// regardless of which way -Z is pointing
1901	if (closestAsteroid == nullptr \|\| intersection.z > closestIntersection.z) {
1902	// TODO: At this point, find the real intersection of the laser with one of the asteroid's sides
1903	closestAsteroid = &asteroidObjects[i];
1904	closestIntersection = intersection;
1905	closestAsteroidIndex = i;
1906	}
1907	}
1908	}
1909
1910	float width = laser.vertices[0].pos.x - laser.vertices[1].pos.x;
1911
1912	if (laser.targetAsteroid != closestAsteroid) {
1913	if (laser.targetAsteroid != nullptr) {
1914	if (index == leftLaserIdx && leftLaserEffect != nullptr) {
1915	leftLaserEffect->deleted = true;
1916	} else if (index == rightLaserIdx && rightLaserEffect != nullptr) {
1917	rightLaserEffect->deleted = true;
1918	}
1919	}
1920
1921	EffectOverTime<AsteroidVertex, SSBO_Asteroid>* eot = nullptr;
1922
1923	if (closestAsteroid != nullptr) {
1924	// TODO: Use some sort of smart pointer instead
1925	eot = new EffectOverTime<AsteroidVertex, SSBO_Asteroid>(asteroidPipeline, asteroidObjects, closestAsteroidIndex,
1926	offset_of(&SSBO_Asteroid::hp), curTime, -20.0f);
1927	effects.push_back(eot);
1928	}
1929
1930	if (index == leftLaserIdx) {
1931	leftLaserEffect = eot;
1932	} else if (index == rightLaserIdx) {
1933	rightLaserEffect = eot;
1934	}
1935
1936	laser.targetAsteroid = closestAsteroid;
1937	}
1938
1939	// Make the laser go past the end of the screen if it doesn't hit anything
1940	float length = closestAsteroid == nullptr ? 5.24f : glm::length(closestIntersection - start);
1941
1942	laser.vertices[4].pos.z = -length + width / 2;
1943	laser.vertices[5].pos.z = -length + width / 2;
1944	laser.vertices[6].pos.z = -length;
1945	laser.vertices[7].pos.z = -length;
1946
1947	// TODO: Consider if I want to set a flag and do this update in updateScene() instead
1948	updateObjectVertices(this->laserPipeline, laser, index);
1949	}
1950
1951	// TODO: Determine if I should pass start and end by reference or value since they don't get changed
1952	// Probably use const reference
1953	bool VulkanGame::getLaserAndAsteroidIntersection(SceneObject<AsteroidVertex, SSBO_Asteroid>& asteroid,
1954	vec3& start, vec3& end, vec3& intersection) {
1955	/*
1956	### LINE EQUATIONS ###
1957	x = x1 + u * (x2 - x1)
1958	y = y1 + u * (y2 - y1)
1959	z = z1 + u * (z2 - z1)
1960
1961	### SPHERE EQUATION ###
1962	(x - x3)^2 + (y - y3)^2 + (z - z3)^2 = r^2
1963
1964	### QUADRATIC EQUATION TO SOLVE ###
1965	au^2 + bu + c = 0
1966	WHERE THE CONSTANTS ARE
1967	a = (x2 - x1)^2 + (y2 - y1)^2 + (z2 - z1)^2
1968	b = 2( (x2 - x1)(x1 - x3) + (y2 - y1)(y1 - y3) + (z2 - z1)(z1 - z3) )
1969	c = x3^2 + y3^2 + z3^2 + x1^2 + y1^2 + z1^2 - 2(x3x1 + y3y1 + z3*z1) - r^2
1970
1971	u = (-b +- sqrt(b^2 - 4ac)) / 2a
1972
1973	If the value under the root is >= 0, we got an intersection
1974	If the value > 0, there are two solutions. Take the one closer to 0, since that's the
1975	one closer to the laser start point
1976	*/
1977
1978	vec3& center = asteroid.center;
1979
1980	float a = pow(end.x - start.x, 2) + pow(end.y - start.y, 2) + pow(end.z - start.z, 2);
1981	float b = 2 * ((start.x - end.x) * (start.x - center.x) + (end.y - start.y) * (start.y - center.y) +
1982	(end.z - start.z) * (start.z - center.z));
1983	float c = pow(center.x, 2) + pow(center.y, 2) + pow(center.z, 2) + pow(start.x, 2) + pow(start.y, 2) +
1984	pow(start.z, 2) - 2 * (center.x * start.x + center.y * start.y + center.z * start.z) -
1985	pow(asteroid.radius, 2);
1986	float discriminant = pow(b, 2) - 4 * a * c;
1987
1988	if (discriminant >= 0.0f) {
1989	// In this case, the negative root will always give the point closer to the laser start point
1990	float u = (-b - sqrt(discriminant)) / (2 * a);
1991
1992	// Check that the intersection is within the line segment corresponding to the laser
1993	if (0.0f <= u && u <= 1.0f) {
1994	intersection = start + u * (end - start);
1995	return true;
1996	}
1997	}
1998
1999	return false;
2000	}
2001
2002	void VulkanGame::addExplosion(mat4 model_mat, float duration, float cur_time) {
2003	vector<ExplosionVertex> vertices;
2004	vertices.reserve(EXPLOSION_PARTICLE_COUNT);
2005
2006	float particle_start_time = 0.0f;
2007
2008	for (int i = 0; i < EXPLOSION_PARTICLE_COUNT; i++) {
2009	float randx = ((float)rand() / (float)RAND_MAX) - 0.5f;
2010	float randy = ((float)rand() / (float)RAND_MAX) - 0.5f;
2011
2012	vertices.push_back({ vec3(randx, randy, 0.0f), particle_start_time});
2013
2014	particle_start_time += .01f;
2015	// TODO: Get this working
2016	// particle_start_time += 1.0f * EXPLOSION_PARTICLE_COUNT / duration
2017	}
2018
2019	// Fill the indices with the the first EXPLOSION_PARTICLE_COUNT ints
2020	vector<uint16_t> indices(EXPLOSION_PARTICLE_COUNT);
2021	iota(indices.begin(), indices.end(), 0);
2022
2023	SceneObject<ExplosionVertex, SSBO_Explosion>& explosion = addObject(
2024	explosionObjects, explosionPipeline,
2025	addObjectIndex(explosionObjects.size(), vertices),
2026	indices, {
2027	mat4(1.0f),
2028	cur_time,
2029	duration,
2030	false
2031	}, true);
2032
2033	explosion.model_base = model_mat;
2034	explosion.model_transform = mat4(1.0f);
2035
2036	explosion.modified = true;
2037	}
2038
2039	void VulkanGame::recreateSwapChain() {
2040	if (vkDeviceWaitIdle(device) != VK_SUCCESS) {
2041	throw runtime_error("failed to wait for device!");
2042	}
2043
2044	cleanupSwapChain();
2045
2046	createSwapChain();
2047	createImageViews();
2048
2049	// The depth buffer does need to be recreated with the swap chain since its dimensions depend on the window size
2050	// and resizing the window is a common reason to recreate the swapchain
2051	VulkanUtils::createDepthImage(device, physicalDevice, resourceCommandPool, findDepthFormat(), swapChainExtent,
2052	depthImage, graphicsQueue);
2053
2054	createRenderPass();
2055	createCommandPools();
2056	createFramebuffers();
2057	createCommandBuffers();
2058	createSyncObjects();
2059
2060	// TODO: Move UBO creation/management into GraphicsPipeline_Vulkan, like I did with SSBOs
2061	// TODO: Check if the shader stages and maybe some other properties of the pipeline can be re-used
2062	// instead of recreated every time
2063
2064	createBufferSet(sizeof(UBO_VP_mats), VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
2065	uniformBuffers_modelPipeline, uniformBuffersMemory_modelPipeline, uniformBufferInfoList_modelPipeline);
2066
2067	modelPipeline.updateRenderPass(renderPass);
2068	modelPipeline.createPipeline("shaders/model-vert.spv", "shaders/model-frag.spv");
2069	modelPipeline.createDescriptorPool(swapChainImages);
2070	modelPipeline.createDescriptorSets(swapChainImages);
2071
2072	createBufferSet(sizeof(UBO_VP_mats), VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
2073	uniformBuffers_shipPipeline, uniformBuffersMemory_shipPipeline, uniformBufferInfoList_shipPipeline);
2074
2075	shipPipeline.updateRenderPass(renderPass);
2076	shipPipeline.createPipeline("shaders/ship-vert.spv", "shaders/ship-frag.spv");
2077	shipPipeline.createDescriptorPool(swapChainImages);
2078	shipPipeline.createDescriptorSets(swapChainImages);
2079
2080	createBufferSet(sizeof(UBO_VP_mats), VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
2081	uniformBuffers_asteroidPipeline, uniformBuffersMemory_asteroidPipeline, uniformBufferInfoList_asteroidPipeline);
2082
2083	asteroidPipeline.updateRenderPass(renderPass);
2084	asteroidPipeline.createPipeline("shaders/asteroid-vert.spv", "shaders/asteroid-frag.spv");
2085	asteroidPipeline.createDescriptorPool(swapChainImages);
2086	asteroidPipeline.createDescriptorSets(swapChainImages);
2087
2088	createBufferSet(sizeof(UBO_VP_mats), VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
2089	uniformBuffers_laserPipeline, uniformBuffersMemory_laserPipeline, uniformBufferInfoList_laserPipeline);
2090
2091	laserPipeline.updateRenderPass(renderPass);
2092	laserPipeline.createPipeline("shaders/laser-vert.spv", "shaders/laser-frag.spv");
2093	laserPipeline.createDescriptorPool(swapChainImages);
2094	laserPipeline.createDescriptorSets(swapChainImages);
2095
2096	createBufferSet(sizeof(UBO_Explosion), VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
2097	uniformBuffers_explosionPipeline, uniformBuffersMemory_explosionPipeline, uniformBufferInfoList_explosionPipeline);
2098
2099	explosionPipeline.updateRenderPass(renderPass);
2100	explosionPipeline.createPipeline("shaders/explosion-vert.spv", "shaders/explosion-frag.spv");
2101	explosionPipeline.createDescriptorPool(swapChainImages);
2102	explosionPipeline.createDescriptorSets(swapChainImages);
2103
2104	imageIndex = 0;
2105	}
2106
2107	void VulkanGame::cleanupSwapChain() {
2108	VulkanUtils::destroyVulkanImage(device, depthImage);
2109
2110	for (VkFramebuffer framebuffer : swapChainFramebuffers) {
2111	vkDestroyFramebuffer(device, framebuffer, nullptr);
2112	}
2113
2114	for (uint32_t i = 0; i < swapChainImageCount; i++) {
2115	vkFreeCommandBuffers(device, commandPools[i], 1, &commandBuffers[i]);
2116	vkDestroyCommandPool(device, commandPools[i], nullptr);
2117	}
2118
2119	modelPipeline.cleanup();
2120	shipPipeline.cleanup();
2121	asteroidPipeline.cleanup();
2122	laserPipeline.cleanup();
2123	explosionPipeline.cleanup();
2124
2125	for (size_t i = 0; i < uniformBuffers_modelPipeline.size(); i++) {
2126	vkDestroyBuffer(device, uniformBuffers_modelPipeline[i], nullptr);
2127	vkFreeMemory(device, uniformBuffersMemory_modelPipeline[i], nullptr);
2128	}
2129
2130	for (size_t i = 0; i < uniformBuffers_shipPipeline.size(); i++) {
2131	vkDestroyBuffer(device, uniformBuffers_shipPipeline[i], nullptr);
2132	vkFreeMemory(device, uniformBuffersMemory_shipPipeline[i], nullptr);
2133	}
2134
2135	for (size_t i = 0; i < uniformBuffers_asteroidPipeline.size(); i++) {
2136	vkDestroyBuffer(device, uniformBuffers_asteroidPipeline[i], nullptr);
2137	vkFreeMemory(device, uniformBuffersMemory_asteroidPipeline[i], nullptr);
2138	}
2139
2140	for (size_t i = 0; i < uniformBuffers_laserPipeline.size(); i++) {
2141	vkDestroyBuffer(device, uniformBuffers_laserPipeline[i], nullptr);
2142	vkFreeMemory(device, uniformBuffersMemory_laserPipeline[i], nullptr);
2143	}
2144
2145	for (size_t i = 0; i < uniformBuffers_explosionPipeline.size(); i++) {
2146	vkDestroyBuffer(device, uniformBuffers_explosionPipeline[i], nullptr);
2147	vkFreeMemory(device, uniformBuffersMemory_explosionPipeline[i], nullptr);
2148	}
2149
2150	for (size_t i = 0; i < swapChainImageCount; i++) {
2151	vkDestroySemaphore(device, imageAcquiredSemaphores[i], nullptr);
2152	vkDestroySemaphore(device, renderCompleteSemaphores[i], nullptr);
2153	vkDestroyFence(device, inFlightFences[i], nullptr);
2154	}
2155
2156	vkDestroyRenderPass(device, renderPass, nullptr);
2157
2158	for (VkImageView imageView : swapChainImageViews) {
2159	vkDestroyImageView(device, imageView, nullptr);
2160	}
2161
2162	vkDestroySwapchainKHR(device, swapChain, nullptr);
2163	}
2164
2165	void VulkanGame::renderMainScreen(int width, int height) {
2166	{
2167	int padding = 4;
2168	ImGui::SetNextWindowPos(vec2(-padding, -padding), ImGuiCond_Once);
2169	ImGui::SetNextWindowSize(vec2(width + 2 * padding, height + 2 * padding), ImGuiCond_Always);
2170	ImGui::Begin("WndMain", nullptr,
2171	ImGuiWindowFlags_NoTitleBar \|
2172	ImGuiWindowFlags_NoResize \|
2173	ImGuiWindowFlags_NoMove);
2174
2175	ButtonImGui btn("New Game");
2176
2177	ImGui::InvisibleButton("", vec2(10, height / 6));
2178	if (btn.draw((width - btn.getWidth()) / 2)) {
2179	goToScreen(&VulkanGame::renderGameScreen);
2180	}
2181
2182	ButtonImGui btn2("Quit");
2183
2184	ImGui::InvisibleButton("", vec2(10, 15));
2185	if (btn2.draw((width - btn2.getWidth()) / 2)) {
2186	quitGame();
2187	}
2188
2189	ImGui::End();
2190	}
2191	}
2192
2193	void VulkanGame::renderGameScreen(int width, int height) {
2194	{
2195	ImGui::SetNextWindowSize(vec2(130, 65), ImGuiCond_Once);
2196	ImGui::SetNextWindowPos(vec2(10, 50), ImGuiCond_Once);
2197	ImGui::Begin("WndStats", nullptr,
2198	ImGuiWindowFlags_NoTitleBar \|
2199	ImGuiWindowFlags_NoResize \|
2200	ImGuiWindowFlags_NoMove);
2201
2202	//ImGui::Text(ImGui::GetIO().Framerate);
2203	renderGuiValueList(valueLists["stats value list"]);
2204
2205	ImGui::End();
2206	}
2207
2208	{
2209	ImGui::SetNextWindowSize(vec2(250, 35), ImGuiCond_Once);
2210	ImGui::SetNextWindowPos(vec2(width - 260, 10), ImGuiCond_Always);
2211	ImGui::Begin("WndMenubar", nullptr,
2212	ImGuiWindowFlags_NoTitleBar \|
2213	ImGuiWindowFlags_NoResize \|
2214	ImGuiWindowFlags_NoMove);
2215	ImGui::InvisibleButton("", vec2(155, 18));
2216	ImGui::SameLine();
2217	if (ImGui::Button("Main Menu")) {
2218	goToScreen(&VulkanGame::renderMainScreen);
2219	}
2220	ImGui::End();
2221	}
2222
2223	{
2224	ImGui::SetNextWindowSize(vec2(200, 200), ImGuiCond_Once);
2225	ImGui::SetNextWindowPos(vec2(width - 210, 60), ImGuiCond_Always);
2226	ImGui::Begin("WndDebug", nullptr,
2227	ImGuiWindowFlags_NoTitleBar \|
2228	ImGuiWindowFlags_NoResize \|
2229	ImGuiWindowFlags_NoMove);
2230
2231	renderGuiValueList(valueLists["debug value list"]);
2232
2233	ImGui::End();
2234	}
2235	}
2236
2237	void VulkanGame::initGuiValueLists(map<string, vector<UIValue>>& valueLists) {
2238	valueLists["stats value list"] = vector<UIValue>();
2239	valueLists["debug value list"] = vector<UIValue>();
2240	}
2241
2242	// TODO: Probably turn this into a UI widget class
2243	void VulkanGame::renderGuiValueList(vector<UIValue>& values) {
2244	float maxWidth = 0.0f;
2245	float cursorStartPos = ImGui::GetCursorPosX();
2246
2247	for (vector<UIValue>::iterator it = values.begin(); it != values.end(); it++) {
2248	float textWidth = ImGui::CalcTextSize(it->label.c_str()).x;
2249
2250	if (maxWidth < textWidth)
2251	maxWidth = textWidth;
2252	}
2253
2254	stringstream ss;
2255
2256	// TODO: Possibly implement this based on gui/ui-value.hpp instead and use templates
2257	// to keep track of the type. This should make it a bit easier to use and maintain
2258	// Also, implement this in a way that's agnostic to the UI renderer.
2259	for (vector<UIValue>::iterator it = values.begin(); it != values.end(); it++) {
2260	ss.str("");
2261	ss.clear();
2262
2263	switch (it->type) {
2264	case UIVALUE_INT:
2265	ss << it->label << ": " << (unsigned int)it->value;
2266	break;
2267	case UIVALUE_DOUBLE:
2268	ss << it->label << ": " << (double)it->value;
2269	break;
2270	}
2271
2272	float textWidth = ImGui::CalcTextSize(it->label.c_str()).x;
2273
2274	ImGui::SetCursorPosX(cursorStartPos + maxWidth - textWidth);
2275	//ImGui::Text("%s", ss.str().c_str());
2276	ImGui::Text("%s: %.1f", it->label.c_str(), (float)it->value);
2277	}
2278	}
2279
2280	void VulkanGame::goToScreen(void (VulkanGame::* renderScreenFn)(int width, int height)) {
2281	currentRenderScreenFn = renderScreenFn;
2282
2283	// TODO: Maybe just set shouldRecreateSwapChain to true instead. Check this render loop logic
2284	// to make sure there'd be no issues
2285	//recreateSwapChain();
2286	}
2287
2288	void VulkanGame::quitGame() {
2289	done = true;
2290	}

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