aperson
Joined: Sat May 01, 2010 9:48 am
Posts: 1
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 Posted: Sat May 01, 2010 12:31 pm Post subject: Speed problem/Jerky movement |
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Hi everybody, I'm trying to complete HCA Assignment 2. But I have struck a problem, the images don't seem to load or sometimes they load after a couple of seconds but the movement is jerky.
| Code: |
using System;
using System.Drawing;
using System.Collections.Generic;
using SdlDotNet.Core;
using SdlDotNet.Graphics;
using SdlDotNet.Input;
namespace OddOneOut
{
public class OddOneOut
{
Surface sfcGameWindow;
const int WIDTH = 1024;
const int HEIGHT = 768;
int level = 1;
List<Surface> TileTypes = new List<Surface>();
List<Tile> Tiles = new List<Tile>();
Random Rand = new Random();
List<int> Directions = new List<int>();
int DirectionPos;
public OddOneOut ()
{
sfcGameWindow = Video.SetVideoMode(WIDTH, HEIGHT);
TileTypes.Add(new Surface("media/card_1.png"));
TileTypes.Add(new Surface("media/card_2.png"));
TileTypes.Add(new Surface("media/card_3.png"));
TileTypes.Add(new Surface("media/card_4.png"));
TileTypes.Add(new Surface("media/card_5.png"));
TileTypes.Add(new Surface("media/card_6.png"));
TileTypes.Add(new Surface("media/card_7.png"));
TileTypes.Add(new Surface("media/card_8.png"));
GenerateDirections();
NewLevel();
}
public void Run() {
Video.WindowCaption = "Odd One Out";
Events.Tick += new EventHandler<TickEventArgs>(Events_Tick);
Events.Quit += new EventHandler<QuitEventArgs>(Events_Quit);
Events.Run();
}
void Events_Tick(object sender, TickEventArgs e) {
Update(e.SecondsElapsed);
Draw();
}
void Update(float elapsed){
foreach(Tile tile in Tiles){
tile.X += Convert.ToSingle(tile.xmove * elapsed);
tile.Y += Convert.ToSingle(tile.ymove * elapsed);
}
}
void Draw(){
sfcGameWindow.Fill(Color.Black);
foreach(Tile tile in Tiles){
sfcGameWindow.Blit(TileTypes[tile.Type], new Point(Convert.ToInt32(tile.X),
Convert.ToInt32(tile.Y)));
}
}
void GenerateDirections(){
for (int i = 0; i < 360; ++i) {
if (i < 10) continue;
if (i >= 350) continue;
if (i > 80 && i < 100) continue;
if (i > 170 && i < 190) continue;
if (i > 260 && i < 280) continue;
Directions.Add(i);
}
}
int ChooseDirection(){
++DirectionPos;
if (DirectionPos == Directions.Count) DirectionPos = 0;
return Directions[DirectionPos];
}
void ShuffleList<T>(List<T> list){
for (int i = 0; i < list.Count; i++){
T tmp = list[i];
list.RemoveAt(i);
list.Insert(Rand.Next(0, list.Count), tmp);
}
}
void NewLevel(){
Tiles.Clear();
GenerateTiles();
}
void GenerateTiles(){
ShuffleList(TileTypes);
for(int i = 0; i < TileTypes.Count; i++){
int numberOfTiles;
if(i == 0) numberOfTiles = 1;
else numberOfTiles = Rand.Next(2,level+2);
for(int y = 0; y < numberOfTiles; y++){
Tile tile = new Tile();
tile.X = Rand.Next(WIDTH);
tile.Y = Rand.Next(HEIGHT);
tile.Speed = Rand.Next(70, 120);
tile.Direction = ChooseDirection();
tile.xmove = (Math.Cos(tile.Direction * Math.PI / 180) * tile.Speed);
tile.ymove = (Math.Sin(tile.Direction * Math.PI / 180) * tile.Speed);
tile.Type = i;
Tiles.Add(tile);
}
}
}
void Events_Quit(object sender, QuitEventArgs e) {
Events.QuitApplication();
}
}
}
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| Code: |
using System;
using System.Drawing;
using SdlDotNet.Graphics;
namespace OddOneOut
{
public class Tile
{
public float X, Y;
public int Direction, Speed, Type;
public double xmove, ymove;
}
}
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Any help is appreciated! |
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