2 files changed, 46 insertions, 2 deletions
diff --git a/main.cpp b/main.cpp
index 1076903..4d14190 100644
--- a/main.cpp
+++ b/main.cpp
@@ -320,9 +320,11 @@ void render() {
 	if (ui::debug) {
 		auto pos = game::engine.getSystem<PlayerSystem>()->getPosition();
 		ui::putText(offset.x-SCREEN_WIDTH/2, (offset.y+SCREEN_HEIGHT/2)-ui::fontSize,
-		            "loc: (%+.2f, %+.2f)\nticks: %u\nxml: %s",
+		            "loc: (%+.2f, %+.2f)\noffset: (%+.2f, %+.2f)\nticks: %u\nxml: %s",
 					pos.x,
 					pos.y,
+					offset.x,
+					offset.y,
 					game::time::getTickCount(),
 					game::engine.getSystem<WorldSystem>()->getXMLFile().c_str()
 		            );
diff --git a/src/world.cpp b/src/world.cpp
index 02db9cf..62e4f69 100644
--- a/src/world.cpp
+++ b/src/world.cpp
@@ -955,8 +955,50 @@ void WorldSystem::render(void)
 	    glVertexAttribPointer(Render::worldShader.tex, 2, GL_FLOAT, GL_FALSE, 0, &grasst[0]);
 	    glDrawArrays(GL_TRIANGLES, 0 , c.size());
 
-    	Render::worldShader.disable();
+		// the starting pixel of the world
+		float s = -(static_cast<float>(SCREEN_WIDTH)/2.0f);
+		// the ending pixel of the world
+		float e =  (static_cast<float>(SCREEN_WIDTH)/2.0f);
+
+		if (offset.x + world.startX > s) {
+
+			glBindTexture(GL_TEXTURE_2D, Texture::genColor(Color(0,0,0))); 
+			glUniform1f(Render::worldShader.uniform[WU_light_impact], 0.0f);
+
+			GLfloat blackBarLeft[] = {s, 				0.0f,								-3.0f,		0.0f, 0.0f, 
+									  world.startX, 	0.0f, 								-3.0f,		1.0f, 0.0f,
+									  world.startX, 	static_cast<float>(SCREEN_HEIGHT), 	-3.0f,		1.0f, 1.0f,
+									  
+									  world.startX, 	static_cast<float>(SCREEN_HEIGHT), 	-3.0f,		1.0f, 1.0f,
+    								  s,				static_cast<float>(SCREEN_HEIGHT), 	-3.0f,		0.0f, 1.0f,
+									  s,				0.0f,								-3.0f,		0.0f, 0.0f};
+
+	    	glVertexAttribPointer(Render::worldShader.coord, 3, GL_FLOAT, GL_FALSE, sizeof(GLfloat)*5, &blackBarLeft[0]);
+	    	glVertexAttribPointer(Render::worldShader.tex, 2, GL_FLOAT, GL_FALSE, sizeof(GLfloat)*5, &blackBarLeft[3]);
+	    	glDrawArrays(GL_TRIANGLES, 0 , 6);
+		}
+
+		if (offset.x - world.startX < e) {
+			
+			glBindTexture(GL_TEXTURE_2D, Texture::genColor(Color(0,0,0))); 
+			glUniform1f(Render::worldShader.uniform[WU_light_impact], 0.0f);
+
+			GLfloat blackBarRight[] = {grassc[grassc.size()-3], 	0.0f,								-3.0f,		0.0f, 0.0f, 
+									   e, 							0.0f, 								-3.0f,		1.0f, 0.0f,
+									   e, 							static_cast<float>(SCREEN_HEIGHT), 	-3.0f,		1.0f, 1.0f,
+									  
+									   e, 							static_cast<float>(SCREEN_HEIGHT), 	-3.0f,		1.0f, 1.0f,
+    								   grassc[grassc.size()-3],		static_cast<float>(SCREEN_HEIGHT), 	-3.0f,		0.0f, 1.0f,
+									   grassc[grassc.size()-3],		0.0f,								-3.0f,		0.0f, 0.0f};
+
+	    	glVertexAttribPointer(Render::worldShader.coord, 3, GL_FLOAT, GL_FALSE, sizeof(GLfloat)*5, &blackBarRight[0]);
+	    	glVertexAttribPointer(Render::worldShader.tex, 2, GL_FLOAT, GL_FALSE, sizeof(GLfloat)*5, &blackBarRight[3]);
+	    	glDrawArrays(GL_TRIANGLES, 0 , 6);
+		}
+		
+		Render::worldShader.disable();
 		Render::worldShader.unuse();
+
 	} else {
 		Render::useShader(&Render::worldShader);
 		Render::worldShader.use();