Terraria world generation

Newbie & Debugging Questions
#1

i have a terrarian style terrain engine but it runs extremly slow. my engine only renders whats on screen. there are individual blocks being spawn. so my question is, how can i get my frame rate as high as in terraria? btw my engine is 2d

  • thanks
#2

Can you show some of the code you use for rendering and stuff?

#3

Correct me if I’m wrong, but Terraria generates the whole world on the first time it is created, still on the menu, it takes a long time to generate it, but when you’re actually in game, no generation occurs. Does this apply for your game?

#4

Yes it does actually. everything is calculated before gameplay happens

btw here is the code for my generation


	r=new Random();//just a random to help generation
			decider=r.nextInt(5);//how jagged the terrain  will be
			
				//there are no chunks actually being rendered, chunkSize is just a number
//the blocks are just doubles holding simplex noise data
			for( x=0; x<chunkSize*25; x+=16){
				for( int k=0; k<chunkSize*2;k+=16){
			block1=SimplexNoise.noise(x/2,0);
	    		  block2=SimplexNoise.noise(x/4,0);
	    		  block3=SimplexNoise.noise(x/8,0);
	    		  block4=SimplexNoise.noise(x/16,0);
	    		 block5=SimplexNoise.noise(x/32,0);
			
						y =  (block1+block2+block3+block4+block5*(decider+1); 

							
						if(k<4){//this just decides which type of block each tile is
					blok=1;
						}
					if(k>4&&k<4*5){
						blok=0;
					}
					if(k>4*5){
						blok=2;
					}
					addBlock(new TestEnt(x,y+595+k, blok));
					
					
				}
			}

Each testEnt is stored in a linked list then created. each blocks checks to see wheter it is off the screen or not then doesn’t render accordingly

#5

What engine do you use? For fast 2D you should look into libGDX.

Mike

#6

i use the regular java2d but ive pretty much fixed it. i was running the functions of the blocks way to much

#7

Maybe it only renders what’s onscreen, but it’s still calculating what’s offscreen…

#8

In terraria it sures calculates whats offscreen, because if u push a pipe of one side of the world to the other side, you can transport water blocks :stuck_out_tongue: