Open your project and locate the AI.(gameTime);
We don't want the AI to move when we're already dead , or the AI is dead. So, set a condition before updating the AI
//UPDATE METHOD
if (enemy.alive && player.alive)
{
AI(gameTime);
}
Next, add a bool to your project called hasstart.
bool hasstart = false;
Next go to your Game ()method, make the screen larger for more gameplay space.
public Game1()
{
graphics = new GraphicsDeviceManager(this);
Content.RootDirectory = "Content";
graphics.PreferredBackBufferHeight = 768;
graphics.PreferredBackBufferWidth = 1024;
graphics.ApplyChanges();
}
//UPDATE METHOD
if (hasstart) //IF THE GAME HAS STARTED, UPDATE THE GAME OBJECTS, METHODS AND THE GAME
{
updateTank();
if (enemy.alive && player .alive )
{
AI(gameTime);
}
if (player.alive)
{
tempposition = player.position;
if (currentKeyboardState.IsKeyDown(Keys.Right) && oldKeyboardState.IsKeyDown(Keys.Right))
{
player.rotation += 0.1f;
}
if (currentKeyboardState.IsKeyDown(Keys.Left) && oldKeyboardState.IsKeyDown(Keys.Left))
{
player.rotation -= 0.1f;
}
if (currentKeyboardState.IsKeyDown(Keys.Up) && oldKeyboardState.IsKeyDown(Keys.Up))
{
player.position += player.velocity * moveSpeed;
player.position.X = MathHelper.Clamp(player.position.X, player.texture.Width / 4, GraphicsDevice.Viewport.Width - player.texture.Width / 4);
player.position.Y = MathHelper.Clamp(player.position.Y, player.texture.Height / 4, GraphicsDevice.Viewport.Height - player.texture.Height / 4);
soundManager.soundBank.PlayCue("move");
}
if (currentKeyboardState.IsKeyDown(Keys.Down) && oldKeyboardState.IsKeyDown(Keys.Down))
{
player.position -= player.velocity * moveSpeed;
player.position.X = MathHelper.Clamp(player.position.X, player.texture.Width / 4, GraphicsDevice.Viewport.Width - player.texture.Width / 4);
player.position.Y = MathHelper.Clamp(player.position.Y, player.texture.Height / 4, GraphicsDevice.Viewport.Height - player.texture.Height / 4);
}
if (currentKeyboardState.IsKeyDown(Keys.Space) && oldKeyboardState.IsKeyUp(Keys.Space))
{
fireBullets();
}
}
if (enemy.life <= 0)
{
enemy.alive = false;
}
if (player.life <= 0)
{
player.alive = false;
}
detectCollisionsAgainstObject(player, enemy);
}
if (currentKeyboardState.IsKeyDown(Keys.Enter) && oldKeyboardState.IsKeyUp(Keys.Enter) && hasstart == false)
{
//IF THE PLAYER PRESSED ENTER KEY AND THE GAME HASNT STARTED , SET THE GAME TO START
hasstart = true;
}
NEXT, INFORM THE USER HOW TO START THE GAME
//DRAW METHOD, EDIT YOUR DRAW METHOD
protected override void Draw(GameTime gameTime)
{
GraphicsDevice.Clear(Color.CornflowerBlue);
spriteBatch.Begin();
spriteBatch.Draw(background , Vector2 .Zero ,
null, Color.White, 0f,
Vector2 .Zero ,
2f, SpriteEffects.None, 0);
if (enemy.alive)
{
spriteBatch.Draw(enemy.texture, enemy.position,
null, Color.White, enemy.rotation,
new Vector2(enemy.texture.Width / 2, enemy.texture.Height / 2),
0.5f, SpriteEffects.None, 0);
}
else
{
spriteBatch.DrawString(Content.Load
hasstart= false;
}
SpriteFont font = Content.Load
if(!hasstart )
spriteBatch.DrawString(font, "PRESS ENTER TO START GAME", new Vector2(GraphicsDevice.Viewport.Width / 2 - font.MeasureString("PRESS ENTER TO START GAME").X / 2, GraphicsDevice.Viewport.Height / 2), Color.White);
if (player.alive)
{
spriteBatch.Draw(player.texture, player.position,
null, Color.White, player.rotation,
new Vector2(player.texture.Width / 2, player.texture.Height / 2), 0.5f, SpriteEffects.None, 0);
}
else
{
spriteBatch.DrawString(Content.Load
hasstart = false;
}
updateBullets();
spriteBatch.DrawString(Content.Load
spriteBatch.DrawString(Content.Load
new Vector2(GraphicsDevice .Viewport .Width - 200 ,0), Color.White);
spriteBatch.End();
foreach (gameObject explode in Explosion)
{
drawExplosion(explode);
}
base.Draw(gameTime);
}
NOW CREATE A RECTANGLE METHOD THAT WILL DRAW THE LIFE OF THE PLAYER
public Rectangle life(Vector2 position, int hp, int border )
{
int w = 1;
int h = 10;
return new Rectangle((int)position.X - border , (int)position.Y - border , w * hp +border *2 ,h + border*2 );
}
public void drawRectangle(bool alive)
{
Color hpColor;
if (alive)
{
if (player.life < 30)
{
hpColor = Color.Red;
}
else
{
hpColor = Color.ForestGreen;
}
Texture2D bounds = new Texture2D(GraphicsDevice, 1, 2);
Color[] color = new Color[1 * 2];
for (int i = 0; i < color.Length; i++)
color[i] = Color.Black * 0.5f;
bounds.SetData
spriteBatch.Draw(bounds, life(new Vector2(player.position.X - player.texture.Width / 4, player.position.Y - player.texture.Height / 3), 100, 2), Color.White);
bounds = new Texture2D(GraphicsDevice, 1, 1);
bounds.SetData
spriteBatch.Draw(bounds, life(new Vector2(player.position.X - player.texture.Width / 4, player.position.Y - player.texture.Height / 3), player.life, 0), Color.White);
}
}
THEN ADD IT TO YOUR DRAW METHOD
drawRectangle(player .alive ); //PLACE IT BEFORE THE SPRITEBATCH.END
RUN THE GAME!!
[AI WONT UPDATE : PLAYER IS DEAD]
[WAIT FOR INPUT DEPENDING ON HAS START BOOL]
[HP BAR USING RECTANGLE METHOD]
