تويت
struct Bullet
{
public Vector3 position;
public Quaternion rotation;
}
Texture2D bulletTexture;
List<Bullet> bulletList = new List<Bullet>(); double lastBulletTime = 0;
bulletTexture = Content.Load<Texture2D>("bullet"...;
if (keys.IsKeyDown(Keys.Space))
{
double currentTime = gameTime.TotalGameTime.TotalMilliseconds;
if (currentTime - lastBulletTime > 100)
{
Bullet newBullet = new Bullet();
newBullet.position = ModelPosition;
newBullet.rotation = ModelRotation;
bulletList.Add(newBullet);
lastBulletTime = currentTime;
}
}
private void UpdateBulletPositions(float moveSpeed)
{
for (int i = 0; i < bulletList.Count; i++)
{
Bullet currentBullet = bulletList[i];
MoveForward(ref currentBullet.position, currentBullet.rotation, moveSpeed * 2.0f);
bulletList[i] = currentBullet;
model bulletSphere = new model (currentBullet.position, 0.005f);
CollisionType colType = CheckCollision(bulletSphere);
if (colType != CollisionType.None)
{
bulletList.RemoveAt (i);
i--;
if (colType == CollisionType.Target)
gameSpeed *= 1.05f;
}
}
DrawBullets();
private void DrawBullets()
{
if (bulletList.Count > 0)
{
VertexPointSprite[] spriteArray = new VertexPointSprite[bulletList.Count];
for (int i = 0; i < bulletList.Count; i++)
spriteArray[i] = new VertexPointSprite(bulletList[i].position, 50);
effect.CurrentTechnique = effect.Techniques["PointSprites"];
Matrix worldMatrix = Matrix.Identity;
effect.Parameters["xWorld"].SetValue(worldMatrix);
effect.Parameters["xView"].SetValue(viewMatrix);
effect.Parameters["xProjection"].SetValue(projectionMatrix);
effect.Parameters["xTexture"].SetValue(bulletTexture);
device.RenderState.PointSpriteEnable = true;
device.RenderState.AlphaBlendEnable = true;
device.RenderState.SourceBlend = Blend.One;
device.RenderState.DestinationBlend = Blend.One;
effect.Begin();
foreach (EffectPass pass in effect.CurrentTechnique.Passes)
{
pass.Begin();
device.VertexDeclaration = pointSpriteVertexDeclaration;
device.DrawUserPrimitives(PrimitiveType.PointList, spriteArray, 0, spriteArray.Length);
pass.End();
}
effect.End();
device.RenderState.PointSpriteEnable = false;
device.RenderState.AlphaBlendEnable = false;
}
}
تعليق