/// <summary>
/// This is called when the game should draw itself.
/// </summary>
/// <param name="gameTime">Provides a snapshot of timing values.</param>
public override void Draw(GameTime gameTime)
{
// Màu nền
TankWars.GraphicsDevice.Clear(Color.Black);
// Dùng để vẽ các đối tượng
SpriteBatch spriteBatch = TankWars.SpriteBatch;
spriteBatch.Begin(SpriteSortMode.FrontToBack, BlendState.AlphaBlend
/*, null, null, null, null, Camera.get_transformation(Game.GraphicsDevice)*/);
// Vẽ Màn chơi
Map.Draw(gameTime, spriteBatch);
foreach (PowerIcon power in PowerIconList)
{
power.Draw(gameTime, spriteBatch);
}
// Vẽ Minimap
Minimap.Draw(gameTime, spriteBatch);
// Vẽ cursor người chơi
Cursor.Draw(gameTime, spriteBatch);
// Vẽ người chơi
if (!Player.IsDead)
{
Player.Draw(gameTime, spriteBatch);
Direction.Draw(gameTime, spriteBatch);
Minimap.DrawDot(Player, Color.Blue, spriteBatch);
}
// Vẽ Health Bar
HealthBar.Draw(Player.HitPoints, Player.MaxHitPoints, spriteBatch);
// Vẽ Energy Bar
EnergyBar.Draw(Player.EnergyPoints, Player.MaxEnergyPoints, spriteBatch);
// Vẽ đạn
foreach (Ammunition ammunition in AmmunitionList)
{
ammunition.Draw(gameTime, spriteBatch);
}
// Vẽ các vụ nổ
foreach (Sprite effect in EffectList)
{
effect.Draw(gameTime, spriteBatch);
}
// Vẽ Enemy
foreach (Tank enemy in EnemyList)
{
enemy.Draw(gameTime, spriteBatch);
Minimap.DrawDot(enemy, Color.Red, spriteBatch);
}
spriteBatch.End();
// If the game is transitioning on or off, fade it out to black.
if (TransitionPosition > 0 || pauseAlpha > 0)
{
float alpha = MathHelper.Lerp(1f - TransitionAlpha, 1f, pauseAlpha / 2);
TankWars.FadeBackBufferToBlack(alpha);
}
}
/// <summary>
/// Allows the game component to update itself.
/// </summary>
/// <param name="gameTime">Provides a snapshot of timing values.</param>
public override void Update
(GameTime gameTime, bool otherScreenHasFocus, bool coveredByOtherScreen)
{
base.Update(gameTime, otherScreenHasFocus, false);
// Gradually fade in or out depending on whether we are covered by the pause screen.
if (coveredByOtherScreen)
{
pauseAlpha = Math.Min(pauseAlpha + 1f / 32, 1);
}
else
{
pauseAlpha = Math.Max(pauseAlpha - 1f / 32, 0);
}
if (IsActive)
{
Content.Audio.BackgroundBattlefieldLoop.Play();
Camera.Update(gameTime);
Cursor.Update(gameTime);
Minimap.Update(gameTime);
// Update Sprite người chơi và các thao tác điều khiển
if (!Player.IsDead)
{
Player.Update(gameTime);
Direction.Update(gameTime);
}
// Update các viên đạn đã đc bắn ra
for (CurrentListItem = 0; CurrentListItem < AmmunitionList.Count; CurrentListItem++)
{
Ammunition ammunition = AmmunitionList[CurrentListItem];
ammunition.Update(gameTime);
}
// Update các vụ nổ
for (CurrentListItem = 0; CurrentListItem < EffectList.Count; CurrentListItem++)
{
Sprite effect = EffectList[CurrentListItem];
effect.Update(gameTime);
}
// Update Enemy
RandomMovableEnemy();
for (CurrentListItem = 0; CurrentListItem < EnemyList.Count; CurrentListItem++)
{
Tank enemy = EnemyList[CurrentListItem];
enemy.Update(gameTime);
}
foreach (PowerIcon power in PowerIconList)
{
power.Update(gameTime);
}
if (Player.IsDead)
{
MissionEndDelay += gameTime.ElapsedGameTime;
if (MissionEndDelay >= TimeSpan.FromSeconds(2))
{
Content.Audio.MissionFailed.Play();
Content.Audio.BackgroundBattlefieldLoop.Pause();
TankWars.AddScreen(new MissionFailedMenuScreen());
}
}
if (IsMissionAccomplished)
{
MissionEndDelay += gameTime.ElapsedGameTime;
if (MissionEndDelay >= TimeSpan.FromSeconds(2))
{
Content.Audio.MissionAccomplished.Play();
Content.Audio.BackgroundBattlefieldLoop.Pause();
if (IsCampaignAccomplished)
{
TankWars.AddScreen(new CampaignAccomplishedMenuScreen());
}
else
{
TankWars.AddScreen(new MissionAccomplishedMenuScreen());
}
}
}
}
}
