World can now draw

5 files changed, 37 insertions, 6 deletions

diff --git a/src/engine.cpp b/src/engine.cpp
index 6e6a0e5..191493e 100644
--- a/src/engine.cpp
+++ b/src/engine.cpp
@@ -44,8 +44,8 @@ int Engine::init(void)
     systems.add<GameRunSystem>();
     systems.add<InputSystem>();
     systems.add<PlayerSystem>(entities);
-    systems.add<RenderSystem>();
     systems.add<WorldSystem>();
+    systems.add<RenderSystem>(*(systems.system<WorldSystem>().get()));
     systems.add<ScriptSystem>(entities, *(systems.system<WorldSystem>().get()));
     systems.add<PhysicsSystem>();
     systems.configure();
diff --git a/src/render.cpp b/src/render.cpp
index ceef025..5efccce 100644
--- a/src/render.cpp
+++ b/src/render.cpp
@@ -69,7 +69,7 @@ void RenderSystem::update([[maybe_unused]] entityx::EntityManager& entities,
                                      );
 
     glm::mat4 model = glm::mat4(1.0f);
-    model = glm::scale(model, glm::vec3(2.0f));
+    model = glm::scale(model, glm::vec3(8.0f));
 
     glUseProgram(s);
 
@@ -178,7 +178,28 @@ void RenderSystem::update([[maybe_unused]] entityx::EntityManager& entities,
                               5*sizeof(float), (void*)(3*sizeof(float)));
         glDrawArrays(GL_TRIANGLES, 0, 6);
     });
-    
+
+    std::basic_string<WorldMeshData>& wm = worldSystem.current()->getMesh();
+
+    glActiveTexture(GL_TEXTURE0);
+    glBindTexture(GL_TEXTURE_2D, worldSystem.current()->getTexture());
+    glUniform1i(q, 0);
+
+    glActiveTexture(GL_TEXTURE1);
+    glBindTexture(GL_TEXTURE_2D, worldSystem.current()->getNormal());
+    glUniform1i(n, 1);
+
+    glBindBuffer(GL_ARRAY_BUFFER, world_vbo);
+    glBufferData(GL_ARRAY_BUFFER, 
+                 wm.size() * sizeof(WorldMeshData), 
+                 &wm.front(), 
+                 GL_STREAM_DRAW);
+
+    glVertexAttribPointer(a, 3, GL_FLOAT, GL_FALSE,
+                          6*sizeof(float), 0);
+    glVertexAttribPointer(t, 2, GL_FLOAT, GL_FALSE, 
+                          6*sizeof(float), (void*)(3*sizeof(float)));
+    glDrawArrays(GL_TRIANGLES, 0, wm.size());
 
     /*************
     *  CLEANUP  *
@@ -262,6 +283,7 @@ int RenderSystem::init(void)
     //glClearColor(0.6, 0.8, 1.0, 0.0);
     
     camPos = glm::vec3(0.0f, 0.0f, 0.5f);
+    glGenBuffers(1, &world_vbo);
 
     return 0;
 }
diff --git a/src/render.hpp b/src/render.hpp
index 8dcb434..82ca844 100644
--- a/src/render.hpp
+++ b/src/render.hpp
@@ -35,6 +35,7 @@
 #include <glm/gtc/noise.hpp>
 
 #include "shader.hpp"
+#include "world.hpp"
 
 class RenderSystem : public entityx::System<RenderSystem>
 {
@@ -48,10 +49,12 @@ private:
 
     Shader worldShader;
     glm::vec3 camPos;
+    GLuint world_vbo;
 
+    WorldSystem &worldSystem;
 public:
-    RenderSystem(void) :
-        window(nullptr, SDL_DestroyWindow) {}
+    RenderSystem(WorldSystem & _ws) :
+        window(nullptr, SDL_DestroyWindow), worldSystem(_ws) {}
 
     ~RenderSystem(void)
     {
diff --git a/src/script.hpp b/src/script.hpp
index 5c4c780..87027d5 100644
--- a/src/script.hpp
+++ b/src/script.hpp
@@ -50,6 +50,8 @@ private:
 
     entityx::EntityManager& manager;
     
+    // TODO possibly emit events to spawn worlds instead of passing the
+    //  world system around like a toy
     WorldSystem &worldSystem;
 
 public:
diff --git a/src/world.hpp b/src/world.hpp
index 81e5b9d..5933306 100644
--- a/src/world.hpp
+++ b/src/world.hpp
@@ -33,7 +33,7 @@ struct WorldMeshData
     float posX, posY, posZ;
     float texX, texY;
     float transparency;
-};
+}__attribute__((packed));
 
 struct WorldMaterial
 {
@@ -100,6 +100,9 @@ public:
 
     /* RENDERING */
     void generateMesh();
+    std::basic_string<WorldMeshData>& getMesh() {return mesh;}
+    GLuint getTexture() {return registry.at(0).texture.tex;}
+    GLuint getNormal() {return registry.at(0).normal.tex;};
 
     /* SEED */
     unsigned int getSeed();
@@ -125,6 +128,7 @@ public:
     }
 
     World* addWorld(sol::object);
+    World* current() {return currentWorld;};
     void cleanup()
     {
         worlds.clear();