public PathfindAStar(MapBuilder map)
{
levelWidth = map.Width;
levelHeight = map.Height;
InitializeSearchNodes(map);
}
protected override void LoadContent()
{
Random rnd = new Random();
vertexDeclaration = new VertexDeclaration(new VertexElement[]
{
new VertexElement(0, VertexElementFormat.Vector3, VertexElementUsage.Position, 0),
new VertexElement(12, VertexElementFormat.Vector3, VertexElementUsage.Normal, 0),
new VertexElement(24, VertexElementFormat.Vector2, VertexElementUsage.TextureCoordinate, 0)
}
);
models.Add(new Ground(
Game.Content.Load<Model>(@"Models/Ground/Ground")));
models.Add(new Pickup(
Game.Content.Load<Model>(@"Models/Battery/BatteryModel"),
new Vector3(rnd.Next(MapBuilder.MINX, MapBuilder.MAXX), 30, rnd.Next(MapBuilder.MINY, MapBuilder.MAXY))));
models.Add(new Pickup(
Game.Content.Load<Model>(@"Models/Battery/BatteryModel"),
new Vector3(rnd.Next(MapBuilder.MINX, MapBuilder.MAXX), 30, rnd.Next(MapBuilder.MINY, MapBuilder.MAXY))));
///
/// Build a map using tiles
///
if (!bBuiltMap) {
mapBuilder = new MapBuilder(this.game);
models.AddRange(mapBuilder.Render());
bBuiltMap = true;
}
// need to keep hold of the players model
playerModel = new Player(
Game.Content.Load<Model>(@"Models/Vehicles/PlayerCarModel"),
((Game1)Game).GraphicsDevice,
((Game1)Game).camera,
(Game1)game);
models.Add(playerModel);
Enemy enemy = new Enemy(
Game.Content.Load<Model>(@"Models/Vehicles/BuggyFullHP"),
((Game1)Game).GraphicsDevice,
((Game1)Game).camera,
new Vector3(rnd.Next(MapBuilder.MINX, MapBuilder.MAXX), 0, MapBuilder.MAXY),
playerModel,
(Game1)game);
models.Add(enemy);
/*
MonsterTruck enemyTruck = new MonsterTruck(
Game.Content.Load<Model>(@"Models/Vehicles/MonsterTruckFull"),
((Game1)Game).GraphicsDevice,
((Game1)Game).camera,
new Vector3(rnd.Next(MapBuilder.MINX, MapBuilder.MAXX), 0, MapBuilder.MAXY),
playerModel,
uiManager);
models.Add(enemyTruck);
*/
base.LoadContent();
}
private void InitializeSearchNodes(MapBuilder map)
{
searchNodes = new NodeRecord[levelWidth, levelHeight];
for (int x = 0; x < levelWidth; x++) {
for (int y = 0; y < levelHeight; y++) {
NodeRecord node = new NodeRecord();
node.position = new Point(x, y);
node.movable = map.GetIndex(y, x) == 0;
if (node.movable == true) {
node.connections = new NodeRecord[4];
searchNodes[x, y] = node;
}
}
}
for (int x = 0; x < levelWidth; x++) {
for (int y = 0; y < levelHeight; y++) {
NodeRecord node = searchNodes[x, y];
if (node == null || node.movable == false) {
continue;
}
// implement diagonal in assignment...
Point[] connections = new Point[]
{
new Point (x, y - 1), // up
new Point (x, y + 1), // down
new Point (x - 1, y), // left
new Point (x + 1, y), // right
};
// loop through connections
for (int i = 0; i < connections.Length; i++) {
Point position = connections[i];
if (position.X < 0 || position.X > levelWidth - 1 ||
position.Y < 0 || position.Y > levelHeight - 1) {
continue;
}
NodeRecord connection = searchNodes[position.X, position.Y];
if (connection == null || connection.movable == false) {
continue;
}
node.connections[i] = connection;
}
}
}
}