public static Level LoadLevel(int levelNum)
{
NumberFormatInfo nfi = new CultureInfo("en-US", false).NumberFormat;
Func<XElement, string, float> fParse = (e, n) => float.Parse(e.Attribute(n).Value, nfi);
var doc = XDocument.Load("Levels\\Level1.xml");
var level = new Level();
level.Poligons = doc.Root.Elements("Scene").Elements("Poligon").Select(x =>
{
var p = new Poligon();
p.Points = x.Elements("Point").Select(y => new Vector2(float.Parse(y.Attribute("x").Value), float.Parse(y.Attribute("y").Value))).ToArray();
return p;
}
).ToList();
level.Images = doc.Root.Elements("Scene").Elements("Image").Select(x =>
{
var i = new Image();
i.pos = new Vector2(float.Parse(x.Attribute("x").Value), float.Parse(x.Attribute("y").Value));
i.textureName = x.Attribute("name").Value;
i.width = float.Parse(x.Attribute("w").Value);
i.height = float.Parse(x.Attribute("h").Value);
i.angle = float.Parse(x.Attribute("ang").Value);
return i;
}
).ToList();
level.Teleports = doc.Root.Elements("Scene").Elements("Teleport").Select(x =>
{
var t = new Teleport();
Gate g = new Gate();
g.Center = new Vector2(fParse(x, "x1"), fParse(x, "y1"));
g.Angle = float.Parse(x.Attribute("ang1").Value);
g.Teleport = t;
t.GateA = g;
g = new Gate();
g.Center = new Vector2(fParse(x, "x2"), fParse(x, "y2"));
g.Angle = float.Parse(x.Attribute("ang2").Value);
g.Teleport = t;
t.GateB = g;
t.GateA.Pair = t.GateB;
t.GateB.Pair = t.GateA;
t.lenght = float.Parse(x.Attribute("len").Value);
return t;
}
).ToList();
var player = new Player();
player.Pos = new Vector2(float.Parse(doc.Root.Element("Player").Attribute("x").Value), float.Parse(doc.Root.Element("Player").Attribute("y").Value));
player.direction = float.Parse(doc.Root.Element("Player").Attribute("direction").Value);
level.Player = player;
return level;
}
void drawGateShadow(World.Gate gate, Vector2 pos, float dir)
{
var a = gate.Vertexes[0].Position;
var b = gate.Vertexes[1].Position;
var oldRenderTargets = graphics.GraphicsDevice.GetRenderTargets();
graphics.GraphicsDevice.SetRenderTarget(gateShadow);
effect.View = Matrix.CreateTranslation(-pos.X, -pos.Y, 0) * Matrix.CreateRotationZ(MathHelper.ToRadians(-dir));
effect.CurrentTechnique.Passes[0].Apply();
graphics.GraphicsDevice.Clear(Color.Transparent);
drawShadow(new Vector3(pos, 0), a, b, Color.White);
//затираем тенями
var lA = a;
var lB = b;
level.Poligons.ForEach(x =>
toStartShadowLine(pos, x.Points, null, (sh1, sh2) =>
{
if (Vector.testShasow(pos, new Vector2(sh1.X, sh1.Y), new Vector2(sh2.X, sh2.Y), new Vector2(lA.X, lA.Y), new Vector2(lB.X, lB.Y)))
{
drawShadow(new Vector3(pos, 0), new Vector3(sh1, 0), new Vector3(sh2, 0), Color.Black);
}
})
);
drawPlayer();
graphics.GraphicsDevice.SetRenderTargets(oldRenderTargets);
}
RenderTarget2D DrawLevelRecursive(Vector2 pos, float direction, int depth, World.Gate gate)
{
if (depth >= telepotDepth)
{
return(null);
}
var oldRenderTargets = graphics.GraphicsDevice.GetRenderTargets();
graphics.GraphicsDevice.SetRenderTarget(mainView[depth]);
graphics.GraphicsDevice.Clear(debugMode ? LevelColor[depth] : Color.White);
//Рисуем полигоны уровня
if (depth >= startDepth)
{
DrawLelel(pos, direction, gate);
}
//Рисуем то, что за телепортами
var gates = level.Teleports.SelectMany(x => new World.Gate[] { x.GateA, x.GateB }).OrderByDescending(x => (x.Center - pos).Length())
.Where(x => Vector2.Dot(x.Direction, (pos - x.Center)) > 0).ToList();
gates.ForEach(x =>
{
var gPos = positionFromGate(x, pos);
var gDir = directionFromGate(x, direction);
var rt = DrawLevelRecursive(gPos, gDir, depth + 1, x.Pair);
if (rt == null)
{
return;
}
if (depth >= startDepth)
{
drawGateShadow(x, pos, direction);
}
else
{
fillGateShadow();
}
MixTexture(rt, gateShadow);
});
graphics.GraphicsDevice.SetRenderTargets(oldRenderTargets);
return(mainView[depth]);
}
Vector2 positionFromGate(World.Gate gate, Vector2 pos)
{
//1. Совмещаем текущие врата с нулём
var tg1 = Matrix.CreateTranslation(-gate.Center.X, -gate.Center.Y, 0);
//2. Поворачиваем текущие врата, чтобы совместить их наклон с выходными
var rg1 = Matrix.CreateRotationZ(MathHelper.ToRadians(gate.Pair.Angle - (gate.Angle + 180)));
//3. Совмещаем положение текущих врат с выходными
var tg2 = Matrix.CreateTranslation(new Vector3(gate.Pair.Center, 0));
//4. Положение персонажа относительно выходных врат
var altPlayer = Vector2.Transform(pos, tg1 * rg1 * tg2);
return(altPlayer);
}
void DrawLelel(Vector2 pos, float direction, World.Gate gate)
{
var t = effect.View;
effect.View = Matrix.CreateTranslation(new Vector3(-pos, 0)) * Matrix.CreateRotationZ(MathHelper.ToRadians(-direction));
GraphicsDevice.RasterizerState = RasterizerState.CullNone;
effect.TextureEnabled = true;
effect.VertexColorEnabled = false;
GraphicsDevice.BlendState = BlendState.AlphaBlend;
level.Images.ForEach(x =>
{
effect.Texture = x.texture;
effect.CurrentTechnique.Passes[0].Apply();
GraphicsDevice.DrawUserPrimitives <VertexPositionTexture>(PrimitiveType.TriangleList, x.Vertexs, 0, 2);
});
effect.TextureEnabled = false;
effect.VertexColorEnabled = true;
effect.CurrentTechnique.Passes[0].Apply();
drawPlayer();
level.Poligons.ForEach(x =>
{
drawPoligonShadow(pos, x.Points, gate, debugMode ? Color.Red : Color.Black);
graphics.GraphicsDevice.DrawUserPrimitives <VertexPositionColor>(PrimitiveType.TriangleList, x.Vertexs, 0, x.TringleCount);
});
if (debugMode)
{
level.Teleports.ForEach(x =>
{
graphics.GraphicsDevice.DrawUserPrimitives <VertexPositionColor>(PrimitiveType.LineList, x.GateA.Vertexes, 0, 1);
graphics.GraphicsDevice.DrawUserPrimitives <VertexPositionColor>(PrimitiveType.LineList, x.GateB.Vertexes, 0, 1);
});
}
effect.View = t;
}
void toStartShadowLine(Vector2 pos, Vector2[] vertexs, World.Gate gate, Action <Vector2, Vector2> callback)
{
Vector2?a = null;
Vector2?b = null;
Action <Vector2> extremePoints = point =>
{
if (a == null)
{
a = point - pos; //минимальный градус
b = point - pos; //максимальный градус
}
var sample = point - pos;
if (a.Value.X * (-sample.Y) + a.Value.Y * sample.X > 0)
{
a = sample;
}
if (b.Value.X * (-sample.Y) + b.Value.Y * sample.X < 0)
{
b = sample;
}
};
if (gate == null)
{
vertexs.ForEach(extremePoints);
}
else
{
Vector.cutShape(pos, vertexs, new Segment2(gate.Vertexes[0].Position.ToVector2(), gate.Vertexes[1].Position.ToVector2()), extremePoints);
}
if (a != null)
{
callback(pos + a.Value, pos + b.Value);
}
}
float directionFromGate(World.Gate gate, float direction)
{
return(direction + gate.Pair.Angle - (gate.Angle + 180));
}
void drawPoligonShadow(Vector2 pos, Vector2[] vertexs, World.Gate gate, Color color)
{
//всё просто, нужно определить крайние точки из vertexs
toStartShadowLine(pos, vertexs, gate, (a, b) => drawShadow(new Vector3(pos, 0), new Vector3(a, 0), new Vector3(b, 0), color));
}
public static Level LoadLevel(int levelNum)
{
NumberFormatInfo nfi = new CultureInfo("en-US", false).NumberFormat;
Func <XElement, string, float> fParse = (e, n) => float.Parse(e.Attribute(n).Value, nfi);
var doc = XDocument.Load("Levels\\Level1.xml");
var level = new Level();
level.Poligons = doc.Root.Elements("Scene").Elements("Poligon").Select(x =>
{
var p = new Poligon();
p.Points = x.Elements("Point").Select(y => new Vector2(float.Parse(y.Attribute("x").Value), float.Parse(y.Attribute("y").Value))).ToArray();
return(p);
}
).ToList();
level.Images = doc.Root.Elements("Scene").Elements("Image").Select(x =>
{
var i = new Image();
i.pos = new Vector2(float.Parse(x.Attribute("x").Value), float.Parse(x.Attribute("y").Value));
i.textureName = x.Attribute("name").Value;
i.width = float.Parse(x.Attribute("w").Value);
i.height = float.Parse(x.Attribute("h").Value);
i.angle = float.Parse(x.Attribute("ang").Value);
return(i);
}
).ToList();
level.Teleports = doc.Root.Elements("Scene").Elements("Teleport").Select(x =>
{
var t = new Teleport();
Gate g = new Gate();
g.Center = new Vector2(fParse(x, "x1"), fParse(x, "y1"));
g.Angle = float.Parse(x.Attribute("ang1").Value);
g.Teleport = t;
t.GateA = g;
g = new Gate();
g.Center = new Vector2(fParse(x, "x2"), fParse(x, "y2"));
g.Angle = float.Parse(x.Attribute("ang2").Value);
g.Teleport = t;
t.GateB = g;
t.GateA.Pair = t.GateB;
t.GateB.Pair = t.GateA;
t.lenght = float.Parse(x.Attribute("len").Value);
return(t);
}
).ToList();
var player = new Player();
player.Pos = new Vector2(float.Parse(doc.Root.Element("Player").Attribute("x").Value), float.Parse(doc.Root.Element("Player").Attribute("y").Value));
player.direction = float.Parse(doc.Root.Element("Player").Attribute("direction").Value);
level.Player = player;
return(level);
}
