mouse picking

engine/xe_device.cpp

@@ -170,6 +170,7 @@ void Device::createLogicalDevice() {
 
   VkPhysicalDeviceFeatures deviceFeatures = {};
   deviceFeatures.samplerAnisotropy = VK_TRUE;
+  deviceFeatures.fillModeNonSolid = VK_TRUE;
 
   VkDeviceCreateInfo createInfo = {};
   createInfo.sType = VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO;

engine/xe_render_system.cpp

@@ -10,6 +10,7 @@ RenderSystem::RenderSystem(
   std::map<uint32_t, std::vector<Image*>> imageArrayBindings,
   uint32_t pushCunstantDataSize,
   bool cullingEnabled,
+  bool wireframeEnabled,
   std::vector<VkVertexInputAttributeDescription> attributeDescptions,
   uint32_t vertexSize
 ) : xeDevice{Engine::getInstance()->xeDevice}, 
@@ -23,7 +24,7 @@ RenderSystem::RenderSystem(
   createUniformBuffers();
   createDescriptorSets();
   createPipelineLayout();
-  createPipeline(xeRenderer.getSwapChainRenderPass(), vert, frag, cullingEnabled, attributeDescptions, vertexSize);
+  createPipeline(xeRenderer.getSwapChainRenderPass(), vert, frag, cullingEnabled, wireframeEnabled, attributeDescptions, vertexSize);
 }
 
 RenderSystem::~RenderSystem() {
@@ -155,7 +156,7 @@ void RenderSystem::createPipelineLayout() {
 }
 
 
-void RenderSystem::createPipeline(VkRenderPass renderPass, std::string vert, std::string frag, bool cullingEnabled, std::vector<VkVertexInputAttributeDescription> attributeDescptions, uint32_t vertexSize) {
+void RenderSystem::createPipeline(VkRenderPass renderPass, std::string vert, std::string frag, bool cullingEnabled, bool wireframeEnabled, std::vector<VkVertexInputAttributeDescription> attributeDescptions, uint32_t vertexSize) {
   assert(pipelineLayout != nullptr && "Cannot create pipeline before pipeline layout");
 
   PipelineConfigInfo pipelineConfig{};
@@ -163,6 +164,9 @@ void RenderSystem::createPipeline(VkRenderPass renderPass, std::string vert, std
   if (cullingEnabled) {
     pipelineConfig.rasterizationInfo.cullMode = VK_CULL_MODE_BACK_BIT;
   }
+  if(wireframeEnabled) {
+    pipelineConfig.rasterizationInfo.polygonMode = VK_POLYGON_MODE_LINE;
+  }
   pipelineConfig.renderPass = renderPass;
   pipelineConfig.pipelineLayout = pipelineLayout;
   xePipeline = std::make_unique<Pipeline>(

engine/xe_render_system.hpp

@@ -74,8 +74,24 @@ class RenderSystem {
           return *this;
         }
 
+        Builder& setWireframe(bool enabled) {
+          wireframeEnabled = enabled;
+          return *this;
+        }
+
         std::unique_ptr<RenderSystem> build() {
-          return std::make_unique<RenderSystem>(std::move(vert), std::move(frag), std::move(uniformBindings), std::move(imageBindings), std::move(imageArrayBindings), std::move(pushCunstantDataSize), std::move(cullingEnabled), std::move(attributeDescptions), std::move(vertexSize));
+          return std::make_unique<RenderSystem>(
+            std::move(vert), 
+            std::move(frag), 
+            std::move(uniformBindings), 
+            std::move(imageBindings), 
+            std::move(imageArrayBindings), 
+            std::move(pushCunstantDataSize), 
+            std::move(cullingEnabled), 
+            std::move(wireframeEnabled), 
+            std::move(attributeDescptions), 
+            std::move(vertexSize)
+          );
         }
 
       private:
@@ -92,6 +108,7 @@ class RenderSystem {
         std::string frag;
 
         bool cullingEnabled{false};
+        bool wireframeEnabled{false};
     };
 
     RenderSystem(
@@ -102,6 +119,7 @@ class RenderSystem {
       std::map<uint32_t, std::vector<Image*>> imageArrayBindings,
       uint32_t pushCunstantDataSize,
       bool cullingEnabled,
+      bool wireframeEnabled,
       std::vector<VkVertexInputAttributeDescription> attributeDescptions,
       uint32_t vertexSize
     );
@@ -127,7 +145,7 @@ class RenderSystem {
     void createDescriptorSets();
     void updateDescriptorSet(int frameIndex, bool allocate);
     void createPipelineLayout();
-    void createPipeline(VkRenderPass renderPass, std::string vert, std::string frag, bool cullingEnabled, std::vector<VkVertexInputAttributeDescription> attributeDescptions, uint32_t vertexSize);
+    void createPipeline(VkRenderPass renderPass, std::string vert, std::string frag, bool cullingEnabled, bool wireframeEnabled, std::vector<VkVertexInputAttributeDescription> attributeDescptions, uint32_t vertexSize);
 
     bool boundPipeline{false};
     bool boundDescriptor{false};

res/shaders/simple_shader.vert

@@ -22,8 +22,8 @@ layout (push_constant) uniform Push {
 const float AMBIENT = 0.02;
 
 void main() {
-  gl_Position = ubo.projectionViewMatrix * push.modelMatrix * vec4(position, 1.0);
 
+  gl_Position = ubo.projectionViewMatrix * push.modelMatrix * vec4(position, 1.0);
   vec3 normalWorldSpace = normalize(mat3(push.normalMatrix) * normal);
 
   float lightIntensity = AMBIENT + max(dot(normalWorldSpace, ubo.directionToLight), 0);

src/chunk.cpp

@@ -391,6 +391,29 @@ void Chunk::setBlock(int32_t x, int32_t y, int32_t z, uint8_t block) {
   cubes[index] = block;
 }
 
+uint8_t Chunk::getGlobalBlock(int32_t x, int32_t y, int32_t z) {
+  if(y >= CHUNK_SIZE.y) return AIR;
+  if(y < 0) return INVALID;
+  int gridX = static_cast<int>(floor(x / Chunk::CHUNK_SIZE.x));
+  int gridZ = static_cast<int>(floor(z / Chunk::CHUNK_SIZE.z));
+  Chunk* chunk = getChunk(gridX, gridZ);
+  if(chunk == nullptr) return INVALID;
+  int localX = x - gridX * CHUNK_SIZE.x;
+  int localZ = z - gridZ * CHUNK_SIZE.z;
+  return chunk->getBlock(localX, y, localZ);
+}
+
+void Chunk::setGlobalBlock(int32_t x, int32_t y, int32_t z, uint8_t block) {
+  if(y < 0 || y >= CHUNK_SIZE.y) return;
+  int gridX = static_cast<int>(x % Chunk::CHUNK_SIZE.x);
+  int gridZ = static_cast<int>(floor(z / Chunk::CHUNK_SIZE.z));
+  Chunk* chunk = getChunk(gridX, gridZ);
+  if(chunk == nullptr) return;
+  int localX = x - gridX * CHUNK_SIZE.x;
+  int localZ = z - gridZ * CHUNK_SIZE.z;
+  chunk->setBlock(localX, y, localZ, block);
+}
+
 bool Chunk::isGenerated(int32_t gridX, int32_t gridZ) {
   Chunk* chunk = Chunk::getChunk(gridX, gridZ);
   if(chunk == nullptr) return false;

src/chunk.hpp

@@ -68,6 +68,8 @@ class Chunk {
     xe::Model* getMesh();
     uint8_t getBlock(int32_t x, int32_t y, int32_t z);
     void setBlock(int32_t x, int32_t y, int32_t z, uint8_t block);
+    static uint8_t getGlobalBlock(int32_t x, int32_t y, int32_t z);
+    static void setGlobalBlock(int32_t x, int32_t y, int32_t z, uint8_t block);
 
     static bool isGenerated(int32_t gridX, int32_t gridZ);
     static bool isMeshed(int32_t gridX, int32_t gridZ);

src/player_controller.cpp

@@ -24,7 +24,7 @@ void PlayerController::update(float dt) {
   float yaw = viewerObject.transform.rotation.y;
   const glm::vec3 forwardDir{sin(yaw), 0.f, cos(yaw)};
   const glm::vec3 rightDir{forwardDir.z, 0.f, -forwardDir.x};
-  const glm::vec3 upDir{0.f, 01.f, 0.f};
+  const glm::vec3 upDir{0.f, 1.f, 0.f};
 
   glm::vec3 moveDir{0};
   if(input.isKeyPressed(keys.moveForward)) moveDir += forwardDir;

src/player_controller.hpp

@@ -3,6 +3,7 @@
 #include "xe_game_object.hpp"
 #include "xe_input.hpp"
 
+#define GLM_FORCE_RADIANS
 #include <glm/common.hpp>
 #include <glm/fwd.hpp>
 #include <glm/geometric.hpp>
@@ -36,7 +37,7 @@ namespace app {
       xe::GameObject &viewerObject;
 
       KeyMappings keys{};
-      float moveSpeed{250.f};
+      float moveSpeed{100.f};
       float lookSpeed{1.5f};
 
   };

src/skinned_renderer.cpp

@@ -1,9 +1,9 @@
-#include "chunk_renderer.hpp"
+#include "skinned_renderer.hpp"
 #include "chunk.hpp"
 
 namespace app {
 
-ChunkRenderer::ChunkRenderer(std::vector<xe::Image*> &images) {
+SkinnedRenderer::SkinnedRenderer(std::vector<xe::Image*> &images) {
   xeRenderSystem = xe::RenderSystem::Builder("res/shaders/simple_shader.vert.spv", "res/shaders/simple_shader.frag.spv")
     .addVertexBindingf(0, 3, 0) // position
     .addVertexBindingf(1, 3, 12) // normal
@@ -14,10 +14,11 @@ ChunkRenderer::ChunkRenderer(std::vector<xe::Image*> &images) {
     .addUniformBinding(0, sizeof(UniformBuffer))
     .addTextureArrayBinding(1, images)
     .setCulling(true)
+    .setWireframe(false)
     .build();
 }
 
-void ChunkRenderer::render(std::vector<xe::GameObject> &gameObjects, xe::Camera &xeCamera) {
+void SkinnedRenderer::render(std::vector<xe::GameObject> &gameObjects, xe::Camera &xeCamera) {
 
   xeRenderSystem->start();
 

src/skinned_renderer.hpp

@@ -16,16 +16,16 @@ struct PushConstant {
   alignas(16) glm::mat4 normalMatrix{1.f};
 };
 
-class ChunkRenderer {
+class SkinnedRenderer {
 
   public:
 
-    ChunkRenderer(std::vector<xe::Image*> &images);
+    SkinnedRenderer(std::vector<xe::Image*> &images);
 
-    ~ChunkRenderer() {};
+    ~SkinnedRenderer() {};
 
-    ChunkRenderer(const ChunkRenderer&) = delete;
-    ChunkRenderer operator=(const ChunkRenderer&) = delete;
+    SkinnedRenderer(const SkinnedRenderer&) = delete;
+    SkinnedRenderer operator=(const SkinnedRenderer&) = delete;
 
     void render(std::vector<xe::GameObject> &gameObjects, xe::Camera &xeCamera);
 

src/world.cpp

@@ -6,7 +6,7 @@ World::World(xe::GameObject& viewer, int renderDistance, int worldSeed)
   : viewer{viewer}, 
     renderDistance{renderDistance},
     worldSeed{worldSeed},
-    chunkRenderer{Chunk::getTextures()} {
+    skinnedRenderer{Chunk::getTextures()} {
   reloadChunks(renderDistance);
 }
 
@@ -92,7 +92,26 @@ void World::updateChunkMeshs() {
 
 void World::render(xe::Camera& camera) {
   camera.setViewYXZ(viewer.transform.translation, viewer.transform.rotation);
-  chunkRenderer.render(loadedChunks, camera);
+  // World::Ray ray = raycast(7, 100);
+  skinnedRenderer.render(loadedChunks, camera);
+}
+
+World::Ray World::raycast(float distance, int steps) {
+
+  glm::vec3 position = glm::vec3(viewer.transform.translation);
+
+  float pitch = viewer.transform.rotation.x;
+  float yaw = viewer.transform.rotation.y;
+  float clamp = 1-fabs(sin(-pitch));
+  const glm::vec3 step = glm::normalize(glm::vec3(sin(yaw)*clamp, sin(-pitch), cos(yaw)*clamp)) * (distance/steps);
+
+  for(int i = 0; i < steps; i++) {
+    position += step;
+    int hit = Chunk::getGlobalBlock(position.x, position.y, position.z);
+    if(hit == AIR) continue;
+    return World::Ray{position, hit};
+  }
+  return World::Ray{position, INVALID};
 }
 
 }

src/world.hpp

@@ -1,9 +1,14 @@
 #pragma once
 
 #include "xe_game_object.hpp"
-#include "chunk_renderer.hpp"
+#include "skinned_renderer.hpp"
 #include "chunk.hpp"
 
+#define GLM_FORCE_RADIANS
+#include <glm/common.hpp>
+#include <glm/fwd.hpp>
+#include <glm/geometric.hpp>
+
 #include <vector>
 
 namespace app {
@@ -12,6 +17,11 @@ class World {
 
   public:
 
+    struct Ray {
+      glm::ivec3 pos;
+      int hit;
+    };
+
     World(xe::GameObject& viewer, int renderDistance, int worldSeed);
     ~World();
 
@@ -20,6 +30,8 @@ class World {
     
     void render(xe::Camera& camera);
 
+    Ray raycast(float distance, int steps);
+
   private:
 
     void resetChunks();
@@ -36,7 +48,7 @@ class World {
     const xe::GameObject& viewer;
     std::vector<xe::GameObject> loadedChunks;
 
-    ChunkRenderer chunkRenderer;
+    SkinnedRenderer skinnedRenderer;
 
 };