From c9e914eeaa624cfa796bdea13ebb1056dfda5c9b Mon Sep 17 00:00:00 2001
From: Vegard Storheil Eriksen <zyp@jvnv.net>
Date: Sat, 26 Jun 2010 18:06:40 +0200
Subject: Create a seperate Background class for stage background.

---
 engine/background.cpp | 37 +++++++++++++++++++++++++++++++++++++
 engine/background.h   |  9 +++++++++
 engine/engine.cpp     | 43 +------------------------------------------
 engine/stage.cpp      | 13 +++++++++++++
 engine/stage.h        |  3 +++
 5 files changed, 63 insertions(+), 42 deletions(-)
 create mode 100644 engine/background.cpp
 create mode 100644 engine/background.h

diff --git a/engine/background.cpp b/engine/background.cpp
new file mode 100644
index 0000000..076c6cf
--- /dev/null
+++ b/engine/background.cpp
@@ -0,0 +1,37 @@
+#include "background.h"
+
+#include <SDL/SDL_opengl.h>
+#include <cmath>
+
+void Background::draw() {
+	glClearColor(0.2, 0.2, 0.2, 0);
+	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+	
+	glMatrixMode(GL_PROJECTION);
+	glLoadIdentity();
+	gluPerspective(45, (float)660 / (float)740, 1, 100);
+	
+	glMatrixMode(GL_MODELVIEW);
+	glLoadIdentity();
+	
+	static float f = 0.0;
+	f += 0.01;
+	
+	gluLookAt(
+		5 * sinf(f), 1, 5 * cosf(f),
+		0, 0, 0,
+		5 * sinf(f), 2, 5 * cosf(f));
+	
+	glBegin(GL_LINES);
+	for(int i = -10; i < 11; i++) {
+		if(i % 5 == 0)
+			glColor3f(1, 1, 1);
+		else
+			glColor3f(.5, .5, .5);
+		glVertex3f(i, 0, -10);
+		glVertex3f(i, 0, 10);
+		glVertex3f(-10, 0, i);
+		glVertex3f(10, 0, i);
+	}
+	glEnd();
+}
diff --git a/engine/background.h b/engine/background.h
new file mode 100644
index 0000000..4c294c8
--- /dev/null
+++ b/engine/background.h
@@ -0,0 +1,9 @@
+#ifndef BACKGROUND_H
+#define BACKGROUND_H
+
+class Background {
+	public:
+		void draw();
+};
+
+#endif
diff --git a/engine/engine.cpp b/engine/engine.cpp
index 2e681e7..e67ead3 100644
--- a/engine/engine.cpp
+++ b/engine/engine.cpp
@@ -101,51 +101,10 @@ void Engine::update() {
 	float v_w = Config::window_h * Config::viewport_w;
 	float v_h = Config::window_h * Config::viewport_h;
 	
-	glViewport(
-		v_x - v_w * 0.5,
-		v_y - v_h * 0.5,
-		v_w * 2,
-		v_h * 2);
+	glViewport(v_x - v_w * 0.5, v_y - v_h * 0.5, v_w * 2, v_h * 2);
 	glScissor(v_x, v_y, v_w, v_h);
 	glEnable(GL_SCISSOR_TEST);
 	
-	glClearColor(0.2, 0.2, 0.2, 0);
-	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-
-	glMatrixMode(GL_PROJECTION);
-	glLoadIdentity();
-	gluPerspective(45, (float)660 / (float)740, 1, 100);
-	
-	glMatrixMode(GL_MODELVIEW);
-	glLoadIdentity();
-	
-	float f = tick * 0.0005;
-	
-	gluLookAt(
-		5 * sinf(f), 1, 5 * cosf(f),
-		0, 0, 0,
-		5 * sinf(f), 2, 5 * cosf(f));
-	
-	glBegin(GL_LINES);
-	for(int i = -10; i < 11; i++) {
-		if(i % 5 == 0)
-			glColor3f(1, 1, 1);
-		else
-			glColor3f(.5, .5, .5);
-		glVertex3f(i, 0, -10);
-		glVertex3f(i, 0, 10);
-		glVertex3f(-10, 0, i);
-		glVertex3f(10, 0, i);
-	}
-	glEnd();
-	
-	glMatrixMode(GL_PROJECTION);
-	glLoadIdentity();
-	glOrtho(-0.5, 1.5, -Config::viewport_aspect * 0.5, Config::viewport_aspect * 1.5, 0, 10);
-	
-	glMatrixMode(GL_MODELVIEW);
-	glLoadIdentity();
-	
 	stage->draw();
 	
 	glDisable(GL_SCISSOR_TEST);
diff --git a/engine/stage.cpp b/engine/stage.cpp
index 39cf52a..6bcd622 100644
--- a/engine/stage.cpp
+++ b/engine/stage.cpp
@@ -1,11 +1,15 @@
 #include "stage.h"
 
+#include "config.h"
+
 #include <wriggle/texturesdl.h>
 
 #include <SDL/SDL_opengl.h>
 #include <cmath>
 
 Stage::Stage() {
+	background = new Background();
+	
 	player = new Player();
 	
 	texture = new TextureSDL("textures/shot1.png");
@@ -37,6 +41,15 @@ void Stage::update() {
 }
 
 void Stage::draw() {
+	background->draw();
+	
+	glMatrixMode(GL_PROJECTION);
+	glLoadIdentity();
+	glOrtho(-0.5, 1.5, -Config::viewport_aspect * 0.5, Config::viewport_aspect * 1.5, 0, 10);
+	
+	glMatrixMode(GL_MODELVIEW);
+	glLoadIdentity();
+	
 	player->draw();
 	
 	for(std::vector<Enemy*>::iterator it = enemy_list.begin(); it < enemy_list.end(); it++) {
diff --git a/engine/stage.h b/engine/stage.h
index bc687da..a53b5fd 100644
--- a/engine/stage.h
+++ b/engine/stage.h
@@ -1,6 +1,7 @@
 #ifndef STAGE_H
 #define STAGE_H
 
+#include "background.h"
 #include "player.h"
 #include <wriggle/shader.h>
 #include <wriggle/texture.h>
@@ -11,6 +12,8 @@
 
 class Stage {
 	private:
+		Background* background;
+		
 		Player* player;
 		
 		GLShaderProgram* shader;
-- 
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