load different textures

CMakeLists.txt

@@ -24,12 +24,12 @@ SET(srcs main.cpp gl/Shader.cpp gl/Shader.h
         gl/VertexArray.cpp gl/VertexArray.h
         gl/Renderer.cpp gl/Renderer.h
         blocks/BaseBlock.cpp blocks/BaseBlock.h
-        blocks/GrasBlock.cpp blocks/GrasBlock.h
+        blocks/DirtBlock.cpp blocks/DirtBlock.h
         blocks/BlockRenderer.cpp blocks/BlockRenderer.h
         blocks/RenderBase.cpp blocks/RenderBase.h
         gl/Camera.cpp gl/Camera.h
         bmploader.cpp bmploader.h
-        gl/Texture.cpp gl/Texture.h)
+        gl/Texture.cpp gl/Texture.h blocks/TextureLoader.cpp blocks/TextureLoader.h blocks/Stoneblock.cpp blocks/Stoneblock.h crosshair/CrossHair.cpp crosshair/CrossHair.h)
 
 add_executable(opengltest ${srcs})
 

blocks/BaseBlock.cpp

@@ -12,16 +12,14 @@
 #include "BlockRenderer.h"
 
 void BaseBlock::render() {
-    glUniform3f(BlockRenderer::getInstance()->getUniformhandle("u_color"), r, g, b);
-
     glm::mat4 position = glm::translate(glm::mat4(1.0f), glm::vec3((float) xpos * 2, (float) ypos * 2, (float) zpos * 2));
     glUniformMatrix4fv(BlockRenderer::getInstance()->getUniformhandle("translation"), 1, GL_FALSE, &position[0][0]);
 
+    texture->Bind();
+
     BlockRenderer::getInstance()->render();
 }
 
-BaseBlock::BaseBlock(float r, float g, float b, uint xpos, uint ypos, uint zpos) : r(r), g(g), b(b), xpos(xpos), ypos(ypos), zpos(zpos) {
-    //    BlockRenderer::init();
-    //    this->getrenderer().init();
+BaseBlock::BaseBlock(uint xpos, uint ypos, uint zpos, Texture *texture): xpos(xpos), ypos(ypos), zpos(zpos), texture(texture) {
 
 }

blocks/BaseBlock.h

@@ -7,14 +7,15 @@
 
 
 #include "BlockRenderer.h"
+#include "../gl/Texture.h"
 
 class BaseBlock {
 private:
 
-    float r,g,b;
+    Texture *texture;
     uint xpos, ypos, zpos;
 public:
-    BaseBlock(float r, float g, float b, uint xpos, uint ypos, uint zpos);
+    BaseBlock(uint xpos, uint ypos, uint zpos, Texture *texture);
 
     void render();
 };

blocks/BlockRenderer.cpp

@@ -10,32 +10,6 @@
 #include <GL/gl.h>
 
 VertexArray *BlockRenderer::setVertexArray() {
-    //    float cube_vertices[] = {
-    //            // front
-    //            -1.0, -1.0, 1.0, 0.0f, 0.0f,
-    //            1.0, -1.0, 1.0, 1.0f, 0.0f,
-    //            1.0, 1.0, 1.0, 0.0f, 1.0f,
-    //            -1.0, 1.0, 1.0, 1.0f, 1.0f,
-    //            // back
-    //            -1.0, -1.0, -1.0, 0.0f, 0.0f,
-    //            1.0, -1.0, -1.0, 1.0f, 0.0f,
-    //            1.0, 1.0, -1.0, 0.0f, 1.0f,
-    //            -1.0, 1.0, -1.0, 1.0f, 1.0f,
-    //    };
-
-    float cube_vertices[] = {
-            // front
-            -1, -1, 1, 0, 0,
-            1, -1, 1, 1, 0,
-            1, 1, 1, 0, 1,
-            -1, 1, 1, 1, 1,
-            // back
-            -1, -1, -1, 0, 0,
-            1, -1, -1, 1, 0,
-            1, 1, -1, 0, 1,
-            -1, 1, -1, 1, 1,
-    };
-
     float cubee[] = {
             // face #1
             1, 1, 1, 1, 0,
@@ -75,7 +49,11 @@ VertexArray *BlockRenderer::setVertexArray() {
 
     // Generate a vertex buffer
     auto *vb = new VertexBuffer(cubee, sizeof(cubee));
-    return new VertexArray(*vb);
+    auto *va = new VertexArray(*vb);
+    va->add(0,3,5,0);
+    va->add(1,2,5,12);
+
+    return va;
 }
 
 IndexBuffer *BlockRenderer::setIndexBuffer() {
@@ -105,27 +83,6 @@ IndexBuffer *BlockRenderer::setIndexBuffer() {
             30, 31, 28
     };
 
-    unsigned cube_elements[] = {
-            // front
-            0, 1, 2,
-            2, 3, 0,
-            // right
-            1, 5, 6,
-            6, 2, 1,
-            // back
-            7, 6, 5,
-            5, 4, 7,
-            // left
-            4, 0, 3,
-            3, 7, 4,
-            // bottom
-            4, 5, 1,
-            1, 0, 4,
-            // top
-            3, 2, 6,
-            6, 7, 3
-    };
-
     return new IndexBuffer(indexx, 48);
 }
 
@@ -146,11 +103,6 @@ Shader BlockRenderer::setShader() {
     s.loadShader(vertsrc, geosrc, fragsrc);
     s.Bind();
 
-    Texture t;
-    t.Bind();
-    glUniform1i(s.getUniformHandle("u_texture"), 0);
-
-
     return s;
 }
 

blocks/DirtBlock.cpp

@@ -0,0 +1,9 @@
+//
+// Created by lukas on 04.02.22.
+//
+
+#include "DirtBlock.h"
+#include "TextureLoader.h"
+
+DirtBlock::DirtBlock(const uint &xpos, const uint &ypos, const uint &zpos) : BaseBlock(xpos, ypos, zpos, TextureLoader::loadTexture("../assets/blocks/dirt.bmp")) {
+}

blocks/DirtBlock.h

@@ -0,0 +1,18 @@
+//
+// Created by lukas on 04.02.22.
+//
+
+#ifndef OPENGLTEST_DIRTBLOCK_H
+#define OPENGLTEST_DIRTBLOCK_H
+
+
+#include <cstdlib>
+#include "BaseBlock.h"
+
+class DirtBlock : public BaseBlock {
+public:
+    DirtBlock(const uint &xpos, const uint &ypos, const uint &zpos);
+};
+
+
+#endif //OPENGLTEST_DIRTBLOCK_H

blocks/GrasBlock.cpp

@@ -1,8 +0,0 @@
-//
-// Created by lukas on 04.02.22.
-//
-
-#include "GrasBlock.h"
-
-GrasBlock::GrasBlock(const uint &xpos, const uint &ypos, const uint &zpos) : BaseBlock(0.0f, 1.0f, 0.0f, xpos, ypos, zpos) {
-}

blocks/GrasBlock.h

@@ -1,18 +0,0 @@
-//
-// Created by lukas on 04.02.22.
-//
-
-#ifndef OPENGLTEST_GRASBLOCK_H
-#define OPENGLTEST_GRASBLOCK_H
-
-
-#include <cstdlib>
-#include "BaseBlock.h"
-
-class GrasBlock : public BaseBlock {
-public:
-    GrasBlock(const uint &xpos, const uint &ypos, const uint &zpos);
-};
-
-
-#endif //OPENGLTEST_GRASBLOCK_H

blocks/RenderBase.h

@@ -6,14 +6,19 @@
 #define OPENGLTEST_RENDERBASE_H
 
 
+#include <iostream>
 #include "../gl/Renderer.h"
 #include "../gl/Shader.h"
 
 template<class T>
 class RenderBase {
+private:
+    static RenderBase *instance;
 public:
     virtual VertexArray *setVertexArray() = 0;
+
     virtual Shader setShader() = 0;
+
     virtual IndexBuffer *setIndexBuffer() = 0;
 
     static RenderBase *getInstance() {
@@ -25,11 +30,7 @@ public:
 
     }
 
-private:
-    static RenderBase* instance;
-
-
-private:
+public:
     Renderer r;
     VertexArray *va;
     IndexBuffer *ib;
@@ -37,19 +38,23 @@ private:
 
 public:
     RenderBase() {};
+
     void render() {
         r.render(*va, *ib, s);
     }
+
     void init() {
         s = setShader();
         va = setVertexArray();
         ib = setIndexBuffer();
     }
+
     void deinit() {}
 
     unsigned getMVPhandle() {
         return s.getUniformHandle("MVP");
     }
+
     unsigned getUniformhandle(std::string name) {
         return s.getUniformHandle(std::move(name));
     }

blocks/Stoneblock.cpp

@@ -0,0 +1,8 @@
+//
+// Created by lukas on 06.02.22.
+//
+
+#include "Stoneblock.h"
+#include "TextureLoader.h"
+
+Stoneblock::Stoneblock(uint xpos, uint ypos, uint zpos) : BaseBlock(xpos, ypos, zpos, TextureLoader::loadTexture("../assets/blocks/stone.bmp")) {}

blocks/Stoneblock.h

@@ -0,0 +1,17 @@
+//
+// Created by lukas on 06.02.22.
+//
+
+#ifndef OPENGLTEST_STONEBLOCK_H
+#define OPENGLTEST_STONEBLOCK_H
+
+
+#include "BaseBlock.h"
+
+class Stoneblock: public BaseBlock {
+public:
+    Stoneblock(uint xpos, uint ypos, uint zpos);
+};
+
+
+#endif //OPENGLTEST_STONEBLOCK_H

blocks/TextureLoader.cpp

@@ -0,0 +1,22 @@
+//
+// Created by lukas on 06.02.22.
+//
+
+#include <iostream>
+#include "TextureLoader.h"
+
+std::unordered_map<std::string, Texture> TextureLoader::texts;
+
+Texture *TextureLoader::loadTexture(std::string path) {
+    if (texts.find(path) != texts.end()) {
+        return &texts[path];
+    } else {
+        std::cout << "Loading texture: " << path << std::endl;
+        auto *t = new Texture;
+        t->load(path);
+        t->Bind();
+
+        texts[path] = *t;
+        return t;
+    }
+}

blocks/TextureLoader.h

@@ -0,0 +1,23 @@
+//
+// Created by lukas on 06.02.22.
+//
+
+#ifndef OPENGLTEST_TEXTURELOADER_H
+#define OPENGLTEST_TEXTURELOADER_H
+
+
+#include <unordered_map>
+#include "../gl/Texture.h"
+
+class TextureLoader {
+private:
+    static std::unordered_map<std::string, Texture> texts;
+public:
+    static Texture* loadTexture(std::string path);
+
+private:
+
+};
+
+
+#endif //OPENGLTEST_TEXTURELOADER_H

crosshair/CrossHair.cpp

@@ -0,0 +1,49 @@
+//
+// Created by lukas on 06.02.22.
+//
+#define GL_GLEXT_PROTOTYPES
+#include <GL/gl.h>
+#include "CrossHair.h"
+
+VertexArray *CrossHair::setVertexArray() {
+    float fade[] = {
+            // face #1
+            -0.02, -0.05,
+            0.02, 0.02,
+            -0.05, 0.05,
+            };
+
+    // Generate a vertex buffer
+    auto *vb = new VertexBuffer(fade, sizeof(fade));
+    auto *va = new VertexArray(*vb);
+    va->add(0,2,3,0);
+
+    return va;
+}
+
+Shader CrossHair::setShader() {
+    const std::string vertsrc =
+#include "vertex.shader"
+
+    const std::string fragsrc =
+#include "fragment.shader"
+
+    Shader s;
+    s.loadShader(vertsrc, "", fragsrc);
+    s.Bind();
+
+    return s;
+}
+
+IndexBuffer *CrossHair::setIndexBuffer() {
+    unsigned indexx[] = {
+            0,2,1
+    };
+
+    return new IndexBuffer(indexx, 3);
+}
+
+void CrossHair::renderr() {
+    glUniform3f(getUniformhandle("u_color"), 1.0f, 1.0f, 1.0f);
+    RenderBase::render();
+}

crosshair/CrossHair.h

@@ -0,0 +1,23 @@
+//
+// Created by lukas on 06.02.22.
+//
+
+#ifndef OPENGLTEST_CROSSHAIR_H
+#define OPENGLTEST_CROSSHAIR_H
+
+
+#include "../blocks/RenderBase.h"
+
+class CrossHair : public RenderBase<CrossHair> {
+public:
+    VertexArray *setVertexArray() override;
+
+    Shader setShader() override;
+
+    IndexBuffer *setIndexBuffer() override;
+
+    void renderr();
+};
+
+
+#endif //OPENGLTEST_CROSSHAIR_H

crosshair/fragment.shader

@@ -0,0 +1,8 @@
+R"(#version 330 core
+out vec4 color;
+uniform vec3 u_color;
+
+void main()
+{
+    color = vec4(u_color, 0.5);
+})";

crosshair/vertex.shader

@@ -0,0 +1,9 @@
+R"(#version 330 core
+// Input vertex data, different for all executions of this shader.
+layout(location = 0) in vec2 vertexPosition_modelspace;
+
+void main(){
+    // Output position of the vertex, in clip space : MVP * position
+    vec4 pos = vec4(vertexPosition_modelspace,0.0,1.0);
+    gl_Position = pos;
+})";

gl/Camera.cpp

@@ -2,6 +2,7 @@
 // Created by lukas on 05.02.22.
 //
 #define GL_GLEXT_PROTOTYPES
+
 #include <valarray>
 #include <glm/vec3.hpp>
 #include <glm/ext/matrix_transform.hpp>
@@ -68,13 +69,16 @@ void Camera::setWindowSize(double width, double height) {
 
 void Camera::addRotaion(double rotx, double roty) {
     rx -= rotx / 300;
-    ry -= roty / 300;
+    ry += roty / 300;
 
 
     // limit to 2pi
     rx = std::fmod(rx, (2 * M_PI));
     ry = std::fmod(ry, (2 * M_PI));
 
+    ry = fmin(ry, M_PI / 2.0f);
+    ry = fmax(ry, -M_PI / 2.0f);
+
     updateCameraPos();
 }
 

gl/Shader.cpp

@@ -82,27 +82,39 @@ unsigned int Shader::loadShaderFromFile(const std::string vertex_file_path, cons
 }
 
 unsigned int Shader::loadShader(const std::string vertex_src, const std::string geometry_src, const std::string fragment_src) {
+    uint VertexShaderID;
+    uint GeometryShaderID;
+    uint FragmentShaderID;
+
+    if (!vertex_src.empty()) {
         // Compile Vertex Shader
         printf("Compiling vertex shader\n");
-    uint VertexShaderID = compileShader(vertex_src.c_str(), GL_VERTEX_SHADER);
+        VertexShaderID = compileShader(vertex_src.c_str(), GL_VERTEX_SHADER);
         if (VertexShaderID == 0) {
-        printf("Error Compiling shader\n");
+            printf("Error Compiling vertex shader\n");
             return 0;
         }
+    }
 
+
+    if (!geometry_src.empty()) {
         printf("Compiling geometry shader\n");
-    uint GeometryShaderID = compileShader(geometry_src.c_str(), GL_GEOMETRY_SHADER);
+        GeometryShaderID = compileShader(geometry_src.c_str(), GL_GEOMETRY_SHADER);
         if (GeometryShaderID == 0) {
             printf("Error Compiling shader\n");
             return 0;
         }
+    }
 
+    if (!fragment_src.empty()) {
         printf("Compiling fragment shader\n");
-    uint FragmentShaderID = compileShader(fragment_src.c_str(), GL_FRAGMENT_SHADER);
+        FragmentShaderID = compileShader(fragment_src.c_str(), GL_FRAGMENT_SHADER);
         if (FragmentShaderID == 0) {
             printf("Error Compiling shader\n");
             return 0;
         }
+    }
+
 
     // Link the program
     GLint Result = GL_FALSE;
@@ -110,9 +122,16 @@ unsigned int Shader::loadShader(const std::string vertex_src, const std::string
 
     printf("Linking shader program\n");
     GLuint ProgramID = glCreateProgram();
+    if (!vertex_src.empty()) {
         glAttachShader(ProgramID, VertexShaderID);
+    }
+    if (!geometry_src.empty()) {
         glAttachShader(ProgramID, GeometryShaderID);
+    }
+    if (!fragment_src.empty()) {
         glAttachShader(ProgramID, FragmentShaderID);
+    }
+
     glLinkProgram(ProgramID);
 
     // Check the program
@@ -125,11 +144,20 @@ unsigned int Shader::loadShader(const std::string vertex_src, const std::string
     }
 
     // cleanup shaders
+    if (!vertex_src.empty()){
         glDetachShader(ProgramID, VertexShaderID);
-    glDetachShader(ProgramID, FragmentShaderID);
-
         glDeleteShader(VertexShaderID);
+    }
+
+    if (!geometry_src.empty()){
+        glDetachShader(ProgramID, GeometryShaderID);
+        glDeleteShader(GeometryShaderID);
+    }
+
+    if (!fragment_src.empty()){
+        glDetachShader(ProgramID, FragmentShaderID);
         glDeleteShader(FragmentShaderID);
+    }
 
     mProgHandle = ProgramID;
     return ProgramID;

gl/Shader.h

@@ -24,13 +24,7 @@ public:
 
     unsigned int loadShader(const std::string vertex_src, const std::string geometry_src, const std::string fragment_src);
 
-    /**
-     * comile a specific shader source
-     * @param source source string
-     * @param type shader tpye
-     * @return id of copiled shader
-     */
-    unsigned int compileShader(const char *source, unsigned int type) const;
+
 
     std::string readFile(std::string path);
 
@@ -40,6 +34,15 @@ public:
 
     unsigned getUniformHandle(std::string name);
 
+private:
+    /**
+ * comile a specific shader source
+ * @param source source string
+ * @param type shader tpye
+ * @return id of copiled shader
+ */
+    unsigned int compileShader(const char *source, unsigned int type) const;
+
 };
 
 #endif //OPENGLTEST_SHADER_H

gl/Texture.cpp

@@ -4,12 +4,12 @@
 
 #include "Texture.h"
 #include "../bmploader.h"
+
 #define GL_GLEXT_PROTOTYPES
 
 #include <GL/gl.h>
 
 Texture::Texture() {
-    mTexturehandle = bmploader().loadBMP("../assets/blocks/block.bmp");
 }
 
 void Texture::Bind() {
@@ -20,3 +20,7 @@ void Texture::Bind() {
 void Texture::UnBind() {
     glBindTexture(GL_TEXTURE_2D, 0);
 }
+
+void Texture::load(std::string path) {
+    mTexturehandle = bmploader().loadBMP(path.c_str());
+}

gl/Texture.h

@@ -6,11 +6,14 @@
 #define OPENGLTEST_TEXTURE_H
 
 
+#include <string>
+
 class Texture {
 private:
     unsigned mTexturehandle;
 public:
     Texture();
+    void load(std::string path);
     void Bind();
     void UnBind();
 };

gl/VertexArray.cpp

@@ -17,14 +17,19 @@ VertexArray::VertexArray(const VertexBuffer& buff) {
 
     Bind();
 
-    // specify syntax of my data
-    glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 5 * sizeof(float), (void *) nullptr);
-    glEnableVertexAttribArray(0);
-
-    glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 5 * sizeof(float), (void *) 12);
-    glEnableVertexAttribArray(1);
+//    // specify syntax of my data
+//    glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 5 * sizeof(float), (void *) nullptr);
+//    glEnableVertexAttribArray(0);
+//
+//    glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 5 * sizeof(float), (void *) 12);
+//    glEnableVertexAttribArray(1);
 }
 
 unsigned VertexArray::getHandle() const {
     return handle;
 }
+
+void VertexArray::add(int index, int size, int stride, int pos) {
+    glVertexAttribPointer(index, size, GL_FLOAT, GL_FALSE, stride * sizeof(float), (void *) pos);
+    glEnableVertexAttribArray(index);
+}

gl/VertexArray.h

@@ -17,6 +17,8 @@ public:
 
     void Bind() const;
 
+    void add(int index, int size,  int stride, int pos);
+
     unsigned getHandle() const;
 };
 

main.cpp

@@ -3,15 +3,16 @@
 #define GL_GLEXT_PROTOTYPES
 
 #include <GLFW/glfw3.h>
-#include <GL/gl.h>
 #include <GL/glcorearb.h>
 #include "gl/Shader.h"
 #include "gl/IndexBuffer.h"
 #include "gl/VertexArray.h"
 #include "gl/Renderer.h"
-#include "blocks/GrasBlock.h"
+#include "blocks/DirtBlock.h"
 #include "blocks/BlockRenderer.h"
 #include "gl/Camera.h"
+#include "blocks/Stoneblock.h"
+#include "crosshair/CrossHair.h"
 #include <cstdlib>
 
 #include <glm/gtc/matrix_transform.hpp>
@@ -96,25 +97,19 @@ int main() {
     glEnable(GL_DEPTH_TEST);
     glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 
-
-    GrasBlock gb(0, 0, 0);
-    BaseBlock bb(0.0f, (float) rand() / RAND_MAX, 1.0f, 1, 0, 0);
-
-    //    BlockRenderer::getInstance()->init();
-
     std::vector<BaseBlock> blocks;
-
-    blocks.push_back(gb);
-    blocks.push_back(bb);
-    blocks.emplace_back(1.0f, .0f, 1.0f, 0, 0, 1);
-
-    for (int i = 0; i < 5; i++) {
-        blocks.push_back(GrasBlock(i, i, 0));
+    for (int x = 0; x < 15; x++) {
+        for (int y = 0; y < 15; ++y) {
+            blocks.push_back(DirtBlock(x, y, 1));
+            blocks.push_back(Stoneblock(x, y, 0));
+        }
     }
 
-    cam.setPos(0, 0, 0);
+    cam.setPos(0, 0, 3);
     cam.setRotation(0, 0);
 
+    CrossHair::getInstance()->s.Bind();
+
     while (!glfwWindowShouldClose(window)) {
         // process user input events
         processInput(window);
@@ -122,10 +117,20 @@ int main() {
         glClearColor(0.2f, 0.3f, 0.3f, 1.0f);
         glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 
+
+
+
+        glUniform3f(CrossHair::getInstance()->getUniformhandle("u_color"), 0.0f, 0.0f, 0.0f);
+        CrossHair::getInstance()->render();
+
+        CrossHair::getInstance()->s.Bind();
+        glBindTexture(GL_TEXTURE_2D, 0);
+
         for (auto b: blocks) {
             b.render();
         }
 
+
         // swap buffer to calc and show
         glfwSwapBuffers(window);
         // poll for and execute events