Thread: Drawing many Tiles on screen

Hi, I've been working on my game for a while now, and I've started making levels. Unfortunately, when I have a lot of tiles on screen, some tiles will lag behind on updating the position they're drawn on by a frame. Reducing the frame rate doesn't help this, so is there any solution that doesn't involve making the tile size bigger?

Also in case you're wondering, they're drawn at x-Frame.sx, y-Frame,sy. With Frame.sx and sy being the scroll value.

I'm assuming the problem might be that I'm using Image Icons instead of Buffered Images. Could anyone here tell me how to use Buffered Images in a way that will compile to a .jar?

Ok.

public void render(Graphics g, Component c){
		//g.setColor(Color.red);
		//g.fillRect(x-Frame.sx,y-Frame.sy,16,16);
		if (TileId==1){
		tileset1groundlefttop.paintIcon(c,g,x-Frame.sx,y-Frame.sy);
		}
		if (TileId==2){
			//g.fillRect(x-Frame.sx,y-Frame.sy,16,16);
			tileset1groundtop.paintIcon(c,g,x-Frame.sx,y-Frame.sy);
		}
		if (TileId==3){
			tileset1groundrighttop.paintIcon(c,g,x-Frame.sx,y-Frame.sy);
		}
		if (TileId==4){
			tileset1groundleft.paintIcon(c,g,x-Frame.sx,y-Frame.sy);
		}
		if (TileId==5){
			tileset1ground.paintIcon(c,g,x-Frame.sx,y-Frame.sy);
		}
		if (TileId==6){
			tileset1groundright.paintIcon(c,g,x-Frame.sx,y-Frame.sy);
		}
		if (TileId==7){
			tileset1groundbotleft.paintIcon(c,g,x-Frame.sx,y-Frame.sy);
		}
		if (TileId==8){
			tileset1groundbot.paintIcon(c,g,x-Frame.sx,y-Frame.sy);
		}
		if (TileId==9){
			tileset1groundbotright.paintIcon(c,g,x-Frame.sx,y-Frame.sy);
		}
		if (TileId==10){
			tileset1grounddrytop.paintIcon(c,g,x-Frame.sx,y-Frame.sy);
		}
		if (TileId==11){
			tileset1groundsides.paintIcon(c,g,x-Frame.sx,y-Frame.sy);
		}
		if (TileId==12){
			tileset1trunkslim.paintIcon(c,g,x-Frame.sx,y-Frame.sy);
		}
		if (TileId==13){
			tileset1groundlintersectleft.paintIcon(c,g,x-Frame.sx,y-Frame.sy);
		}
		if (TileId==14){
			tileset1groundlintersect.paintIcon(c,g,x-Frame.sx,y-Frame.sy);
		}
		if (TileId==15){
			tileset1groundlintersectright.paintIcon(c,g,x-Frame.sx,y-Frame.sy);
		}
		if (TileId==16){
			tileset1groundrintersectleft.paintIcon(c,g,x-Frame.sx,y-Frame.sy);
		}
		if (TileId==17){
			tileset1groundrintersect.paintIcon(c,g,x-Frame.sx,y-Frame.sy);
		}
		if (TileId==18){
			tileset1groundrintersectright.paintIcon(c,g,x-Frame.sx,y-Frame.sy);
		}
		if (TileId==19){
			tileset1spike1.paintIcon(c,g,x-Frame.sx,y-Frame.sy);
		}
		if (TileId==20){
			tileset1spike2.paintIcon(c,g,x-Frame.sx,y-Frame.sy);
		}
		if (TileId==21){
			tileset1groundsteepslopel.paintIcon(c,g,x-Frame.sx,y-Frame.sy);
		}
		if (TileId==23){
			tileset1brick.paintIcon(c,g,x-Frame.sx,y-Frame.sy);
		}
		if (TileId==24){
			tileset1door1.paintIcon(c,g,x-Frame.sx,y-Frame.sy);
		}
		if (TileId==25){
			tileset1door2.paintIcon(c,g,x-Frame.sx,y-Frame.sy);
		}
	}

Well, that's the whole render method, at least for the tiles. It also happens at random when a lot is on screen, no patterns whatsoever. Also, its not that the tiles don't actually draw, its that they lag when I update the position. Say a tile is initially drawn at 400-sx for x, 300-sy for y and 0 for sx and sy. The character will move 3 pixels to the right, and increase sx by 3 as well. So x is now 397, y is still 300, sx is now 3, and sy is still 0. Sometimes for a single frame, the tile will still be drawn at 400 for x.

Found the problem, and it was a dumb one too... I apparantly was calling the repaint method too much, and it was trying to update the screen 3 times over...

Originally Posted by curmudgeon

Agree but again a suggestion, next time please give a more complete description of your problem including that you're using Swing, etc.

Sorry, I didn't know things like that the little things like that could actually affect the issue...