outline pointed-at block

[blank.git] / src / app.cpp

diff --git a/src/app.cpp b/src/app.cpp
index 70c45d478c7284ffdf42866ed6900049c082771d..c418660ec48d209be4fef8ba2074c3aa1bb192ee 100644 (file)
--- a/src/app.cpp
+++ b/src/app.cpp
@@ -22,6 +22,9 @@ Application::Application()
 , blockType()
 , cam()
 , chunk()
+, outline()
+, outline_visible(false)
+, outline_transform(1.0f)
 , light_position(17.0f, 17.0f, 17.0f)
 , light_color(1.0f, 1.0f, 1.0f)
 , light_power(250.0f)
@@ -132,6 +135,23 @@ Application::Application()
        chunk.BlockAt(glm::vec3(2, 2, 1)) = Block(blockType[2]);
        chunk.Invalidate();
 
+       outline.vertices = std::vector<glm::vec3>({
+               { 0.0f, 0.0f, 0.0f }, { 1.0f, 0.0f, 0.0f },
+               { 1.0f, 0.0f, 0.0f }, { 1.0f, 1.0f, 0.0f },
+               { 1.0f, 1.0f, 0.0f }, { 0.0f, 1.0f, 0.0f },
+               { 0.0f, 1.0f, 0.0f }, { 0.0f, 0.0f, 0.0f },
+               { 0.0f, 0.0f, 0.0f }, { 0.0f, 0.0f, 1.0f },
+               { 1.0f, 0.0f, 0.0f }, { 1.0f, 0.0f, 1.0f },
+               { 1.0f, 1.0f, 0.0f }, { 1.0f, 1.0f, 1.0f },
+               { 0.0f, 1.0f, 0.0f }, { 0.0f, 1.0f, 1.0f },
+               { 0.0f, 0.0f, 1.0f }, { 1.0f, 0.0f, 1.0f },
+               { 1.0f, 0.0f, 1.0f }, { 1.0f, 1.0f, 1.0f },
+               { 1.0f, 1.0f, 1.0f }, { 0.0f, 1.0f, 1.0f },
+               { 0.0f, 1.0f, 1.0f }, { 0.0f, 0.0f, 1.0f },
+       });
+       outline.colors.resize(24, { -1, -1, -1 });
+       outline.Invalidate();
+
        m_handle = program.UniformLocation("M");
        v_handle = program.UniformLocation("V");
        mv_handle = program.UniformLocation("MV");
@@ -242,10 +262,10 @@ void Application::Update(int dt) {
        float dist;
        if (chunk.Intersection(aim, glm::mat4(1.0f), &blkid, &dist)) {
                glm::vec3 pos = Chunk::ToCoords(blkid);
-               std::cout << "pointing at: <" << pos.x << ", " << pos.y << ", " << pos.z << ">, "
-                       "distance: " << dist << std::endl;
+               outline_visible = true;
+               outline_transform = glm::translate(glm::mat4(1.0f), pos);
        } else {
-               std::cout << "pointing at: nothing" << std::endl;
+               outline_visible = false;
        }
 }
 
@@ -266,6 +286,14 @@ void Application::Render() {
        glUniform1f(light_power_handle, light_power);
 
        chunk.Draw();
+       if (outline_visible) {
+               mv = cam.View() * outline_transform;
+               mvp = cam.MakeMVP(outline_transform);
+               glUniformMatrix4fv(m_handle, 1, GL_FALSE, &m[0][0]);
+               glUniformMatrix4fv(mv_handle, 1, GL_FALSE, &mv[0][0]);
+               glUniformMatrix4fv(mvp_handle, 1, GL_FALSE, &mvp[0][0]);
+               outline.Draw();
+       }
 
        window.Flip();
 }