Draw clouds on hub map.

src/hub/hub.c

@@ -58,6 +58,7 @@ static PointF cursor;
 static float blipSize;
 static float blipValue;
 static int showingWidgets;
+static PointF cloudPos;
 
 void initHub(void)
 {
@@ -183,6 +184,9 @@ void initHub(void)
 		teeka->status = MS_LOCKED;
 	}
 	
+	cloudPos.x = randF() - randF();
+	cloudPos.y = randF() - randF();
+	
 	app.delegate.logic = &logic;
 	app.delegate.draw = &draw;
 	
@@ -197,6 +201,8 @@ static void logic(void)
 	
 	blipSize = 64 + (sin(blipValue) * 16);
 	
+	scrollBackground(cloudPos.x, cloudPos.y);
+	
 	animateSprites();
 	
 	doCursor();
@@ -291,6 +297,8 @@ static void draw(void)
 {
 	blitRectScaled(atlasTexture->texture, 0, 0, SCREEN_WIDTH, SCREEN_HEIGHT, &worldMap->rect, 0);
 	
+	drawBackground(atlasTexture->texture, &clouds->rect);
+	
 	drawMissions();
 	
 	drawInfoBar();

src/hub/hub.h

@@ -50,6 +50,9 @@ extern void stopMusic(void);
 extern void startSectionTransition(void);
 extern void endSectionTransition(void);
 extern void initWorld(void);
+extern void drawBackground(SDL_Texture *texture, SDL_Rect *srcRect);
+extern void scrollBackground(float x, float y);
+extern double randF(void);
 
 extern App app;
 extern Colors colors;

src/system/draw.c

@@ -22,6 +22,23 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 
 static void initColor(SDL_Color *c, int r, int g, int b);
 
+static PointF backgroundPoint[4];
+
+void initBackground(void)
+{
+	backgroundPoint[0].x = -SCREEN_WIDTH / 2;
+	backgroundPoint[0].y = -SCREEN_HEIGHT / 2;
+	
+	backgroundPoint[1].x = SCREEN_WIDTH / 2;
+	backgroundPoint[1].y = -SCREEN_HEIGHT / 2;
+	
+	backgroundPoint[2].x = -SCREEN_WIDTH / 2;
+	backgroundPoint[2].y = SCREEN_HEIGHT / 2;
+	
+	backgroundPoint[3].x = SCREEN_WIDTH / 2;
+	backgroundPoint[3].y = SCREEN_HEIGHT / 2;
+}
+
 void initGraphics(void)
 {
 	initColor(&colors.red, 255, 0, 0);
@@ -187,6 +204,47 @@ void drawOutlineRect(int x, int y, int w, int h, int r, int g, int b, int a)
 	SDL_RenderDrawRect(app.renderer, &rect);
 }
 
+void scrollBackground(float x, float y)
+{
+	int i;
+	
+	for (i = 0 ; i < 4 ; i++)
+	{
+		backgroundPoint[i].x += x;
+		backgroundPoint[i].y += y;
+		
+		if (backgroundPoint[i].x < 0)
+		{
+			backgroundPoint[i].x += (SCREEN_WIDTH * 2);
+		}
+		
+		if (backgroundPoint[i].x >= SCREEN_WIDTH)
+		{
+			backgroundPoint[i].x -= (SCREEN_WIDTH * 2);
+		}
+		
+		if (backgroundPoint[i].y < 0)
+		{
+			backgroundPoint[i].y += (SCREEN_HEIGHT * 2);
+		}
+		
+		if (backgroundPoint[i].y >= SCREEN_HEIGHT)
+		{
+			backgroundPoint[i].y -= (SCREEN_HEIGHT * 2);
+		}
+	}
+}
+
+void drawBackground(SDL_Texture *texture, SDL_Rect *srcRect)
+{
+	int i;
+	
+	for (i = 0 ; i < 4 ; i++)
+	{
+		blitRectScaled(texture, backgroundPoint[i].x, backgroundPoint[i].y, SCREEN_WIDTH - 1, SCREEN_HEIGHT - 1, srcRect, 0);
+	}
+}
+
 static void initColor(SDL_Color *c, int r, int g, int b)
 {
 	memset(c, 0, sizeof(SDL_Color));

src/system/init.c

@@ -134,6 +134,7 @@ void initGameSystem(void)
 	int i, numInitFuns;
 	void (*initFuncs[]) (void) = {
 		initGraphics,
+		initBackground,
 		initFonts,
 		initAtlas,
 		initWidgets,

src/system/init.h

@@ -29,6 +29,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 
 extern void createSaveFolder(void);
 extern void setLanguage(char *applicationName, char *languageCode);
+extern void initBackground(void);
 extern void initGraphics(void);
 extern void initFonts(void);
 extern void initAtlas(void);