add test model

res/content/base/models/cube.obj

@@ -0,0 +1,46 @@
+# Blender v2.79 (sub 0) OBJ File: ''
+# www.blender.org
+mtllib cube.mtl
+o Cube
+v 0.500000 -0.500000 -0.500000
+v 0.500000 -0.500000 0.500000
+v -0.500000 -0.500000 0.500000
+v -0.500000 -0.500000 -0.500000
+v 0.500000 0.500000 -0.500000
+v 0.500000 0.500000 0.500000
+v -0.500000 0.500000 0.500000
+v -0.500000 0.500000 -0.500000
+vt 0.000000 0.000000
+vt 1.000000 0.000000
+vt 1.000000 1.000000
+vt 0.000000 1.000000
+vt 0.000000 0.000000
+vt 1.000000 0.000000
+vt 1.000000 1.000000
+vt 0.000000 1.000000
+vt 1.000000 0.000000
+vt 1.000000 1.000000
+vt 0.000000 1.000000
+vt 0.000000 0.000000
+vt 1.000000 0.000000
+vt 0.000000 1.000000
+vt 0.000000 0.000000
+vt 1.000000 0.000000
+vt 1.000000 1.000000
+vt 1.000000 0.000000
+vt 1.000000 1.000000
+vt 0.000000 1.000000
+vn 0.0000 -1.0000 0.0000
+vn 0.0000 1.0000 0.0000
+vn 1.0000 0.0000 0.0000
+vn -0.0000 -0.0000 1.0000
+vn -1.0000 -0.0000 -0.0000
+vn 0.0000 0.0000 -1.0000
+usemtl blocks/stone
+s off
+f 1/1/1 2/2/1 3/3/1 4/4/1
+f 5/5/2 8/6/2 7/7/2 6/8/2
+f 1/1/3 5/9/3 6/10/3 2/11/3
+f 2/12/4 6/13/4 7/7/4 3/14/4
+f 3/15/5 7/16/5 8/17/5 4/4/5
+f 5/5/6 1/18/6 4/19/6 8/20/6

res/content/base/preload.json

@@ -2,5 +2,8 @@
     "sounds": [
         "blocks/door_open",
         "blocks/door_close"
+    ],
+    "models": [
+        "cube"
     ]
 }

src/graphics/render/WorldRenderer.cpp

@@ -196,7 +196,7 @@ void WorldRenderer::renderLevel(
     drawChunks(level->chunks.get(), camera, shader);
 
     shader->uniformMatrix("u_model", glm::mat4(1.0f));
-    level->entities->render(assets, *modelBatch);
+    level->entities->render(assets, *modelBatch, *frustumCulling);
     modelBatch->render();
 
     skybox->unbind();

src/maths/FrustumCulling.hpp

@@ -3,8 +3,7 @@
 
 #include <glm/matrix.hpp>
 
-class Frustum
-{
+class Frustum {
 public:
     Frustum() {};
 
@@ -12,8 +11,7 @@ public:
     bool isBoxVisible(const glm::vec3& minp, const glm::vec3& maxp) const;
 
 private:
-    enum Planes
-    {
+    enum Planes {
         Left = 0,
         Right,
         Bottom,
@@ -25,8 +23,7 @@ private:
     };
 
     template<Planes i, Planes j>
-    struct ij2k
-    {
+    struct ij2k {
         enum { k = i * (9 - i) / 2 + j - 1 };
     };
 
@@ -37,8 +34,7 @@ private:
     glm::vec3   m_points[8];
 };
 
-inline void Frustum::update(glm::mat4 m)
-{
+inline void Frustum::update(glm::mat4 m) {
     m = glm::transpose(m);
     m_planes[Left] = m[3] + m[0];
     m_planes[Right] = m[3] - m[0];
@@ -78,8 +74,7 @@ inline void Frustum::update(glm::mat4 m)
 
 inline bool Frustum::isBoxVisible(const glm::vec3& minp, const glm::vec3& maxp) const {
     // check box outside/inside of frustum
-    for (int i = 0; i < Count; i++)
-    {
+    for (int i = 0; i < Count; i++) {
         if ((glm::dot(m_planes[i], glm::vec4(minp.x, minp.y, minp.z, 1.0f)) < 0.0) &&
             (glm::dot(m_planes[i], glm::vec4(maxp.x, minp.y, minp.z, 1.0f)) < 0.0) &&
             (glm::dot(m_planes[i], glm::vec4(minp.x, maxp.y, minp.z, 1.0f)) < 0.0) &&
@@ -106,8 +101,7 @@ inline bool Frustum::isBoxVisible(const glm::vec3& minp, const glm::vec3& maxp)
 }
 
 template<Frustum::Planes a, Frustum::Planes b, Frustum::Planes c>
-inline glm::vec3 Frustum::intersection(const glm::vec3* crosses) const
-{
+inline glm::vec3 Frustum::intersection(const glm::vec3* crosses) const {
     float D = glm::dot(glm::vec3(m_planes[a]), crosses[ij2k<b, c>::k]);
     glm::vec3 res = glm::mat3(crosses[ij2k<b, c>::k], -crosses[ij2k<a, c>::k], crosses[ij2k<a, b>::k]) *
         glm::vec3(m_planes[a].w, m_planes[b].w, m_planes[c].w);

src/objects/Entities.cpp

@@ -6,21 +6,26 @@
 #include "../physics/PhysicsSolver.hpp"
 #include "../graphics/render/ModelBatch.hpp"
 #include "../graphics/core/Model.hpp"
+#include "../maths/FrustumCulling.hpp"
 
 #include <glm/ext/matrix_transform.hpp>
 
 void Transform::refresh() {
     combined = glm::mat4(1.0f);
     combined = glm::translate(combined, pos);
+    combined = glm::scale(combined, size);
+    combined = combined * glm::mat4(rot);
 }
 
 Entities::Entities(Level* level) : level(level) {
-    auto entity = registry.create();
-    glm::vec3 pos(0.5f, 170, 0.5f);
-    glm::vec3 size(1);
-    registry.emplace<EntityId>(entity, 1);
-    registry.emplace<Transform>(entity, pos, size, glm::mat3(1.0f));
-    registry.emplace<Hitbox>(entity, pos, size/20.0f);
+    for (int i = 0; i < 1000; i++) {
+        auto entity = registry.create();
+        glm::vec3 pos(0.5f+rand()%50, 100+i, 0.5f+rand()%50);
+        glm::vec3 size(1);
+        registry.emplace<EntityId>(entity, 1);
+        registry.emplace<Transform>(entity, pos, size/4.0f, glm::mat3(1.0f));
+        registry.emplace<Hitbox>(entity, pos, size/2.0f);
+    }
 }
 
 void Entities::updatePhysics(float delta){
@@ -37,19 +42,24 @@ void Entities::updatePhysics(float delta){
             true
         );
         transform.pos = hitbox.position;
+        transform.rot = glm::rotate(glm::mat4(transform.rot), delta, glm::vec3(0, 1, 0));
         if (hitbox.grounded) {
-            hitbox.velocity.y = 10;
+            //hitbox.velocity.y = 10;
         }
     }
 }
 
-void Entities::render(Assets* assets, ModelBatch& batch) {
+void Entities::render(Assets* assets, ModelBatch& batch, Frustum& frustum) {
     auto view = registry.view<Transform>();
-    auto model = assets->get<model::Model>("dingus");
+    auto model = assets->get<model::Model>("cube");
     for (auto [entity, transform] : view.each()) {
-        transform.refresh();
-        batch.pushMatrix(transform.combined);
-        batch.draw(model);
-        batch.popMatrix();
+        const auto& pos = transform.pos;
+        const auto& size = transform.size;
+        if (frustum.isBoxVisible(pos-size, pos+size)) {
+            transform.refresh();
+            batch.pushMatrix(transform.combined);
+            batch.draw(model);
+            batch.popMatrix();
+        }
     }
 }

src/objects/Entities.hpp

@@ -23,6 +23,7 @@ struct Transform {
 class Level;
 class Assets;
 class ModelBatch;
+class Frustum;
 
 class Entity {
     entt::registry& registry;
@@ -51,7 +52,7 @@ class Entities {
 public:
     Entities(Level* level);
     void updatePhysics(float delta);
-    void render(Assets* assets, ModelBatch& batch);
+    void render(Assets* assets, ModelBatch& batch, Frustum& frustum);
 };
 
 #endif // OBJECTS_ENTITIES_HPP_