From b118fc208028cd1deed8b735d18096e090d546b6 Mon Sep 17 00:00:00 2001
From: LaG1924 <12997935+LaG1924@users.noreply.github.com>
Date: Tue, 6 Feb 2018 21:36:03 +0500
Subject: Raycast debug render

---
 src/GameState.cpp     |  1 +
 src/GameState.hpp     |  1 +
 src/RendererWorld.cpp | 22 ++++++++++++++++++++++
 3 files changed, 24 insertions(+)

diff --git a/src/GameState.cpp b/src/GameState.cpp
index 180db98..28e8007 100644
--- a/src/GameState.cpp
+++ b/src/GameState.cpp
@@ -39,6 +39,7 @@ void GameState::Update(float deltaTime) {
         RaycastResult raycast = world.Raycast(player->pos + player->EyeOffset, direction);
         selectedBlock = raycast.isHit ? raycast.hitBlock : Vector(0,0,0);
         distanceToSelectedBlock = raycast.isHit ? (player->pos - raycast.hitPos).GetLength() : 0.0f;
+        raycastHit = raycast.hitPos;
 	}
 }
 
diff --git a/src/GameState.hpp b/src/GameState.hpp
index 5d3d36a..fac9923 100644
--- a/src/GameState.hpp
+++ b/src/GameState.hpp
@@ -63,4 +63,5 @@ public:
 
 	Vector selectedBlock;
 	float distanceToSelectedBlock;
+	VectorF raycastHit;
 };
diff --git a/src/RendererWorld.cpp b/src/RendererWorld.cpp
index 895661f..8390de7 100644
--- a/src/RendererWorld.cpp
+++ b/src/RendererWorld.cpp
@@ -268,6 +268,28 @@ void RendererWorld::Render(RenderState & renderState) {
         glCheckError();
     }
 
+    //Render raycast hit
+    bool renderHit = false;
+    if (renderHit) {
+        VectorF hit = gs->raycastHit;
+        glLineWidth(2.0f);
+        {
+            glm::mat4 model;
+            model = glm::translate(model, hit.glm());
+            model = glm::scale(model,glm::vec3(0.3f,0.3f,0.3f));
+            glUniformMatrix4fv(modelLoc, 1, GL_FALSE, glm::value_ptr(model));
+            if (selectedBlock == Vector())
+                glUniform3f(colorLoc,0.7,0.0,0.0);
+            else
+                glUniform3f(colorLoc, 0.0, 0.0, 0.7);
+            glCheckError();
+            glDrawArrays(GL_LINE_STRIP, 0, 36);
+        }
+        glLineWidth(1.0f);
+        glCheckError();
+    }
+
+
     //Render sections
     renderState.SetActiveShader(blockShader->Program);
     projectionLoc = glGetUniformLocation(blockShader->Program, "projection");
-- 
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