public void Update(GameTime gameTime)
{
KeyboardState kState = Keyboard.GetState();
float dt = (float)gameTime.ElapsedGameTime.TotalSeconds;
if (healthTimer > 0)
{
healthTimer -= dt;
}
anim = animations[(int)direction];
if (isMoving)
{
anim.Update(gameTime);
}
else
{
anim.setFrame(1);
}
isMoving = false;
if (kState.IsKeyDown(Keys.Right))
{
direction = Dir.Right;
isMoving = true;
}
if (kState.IsKeyDown(Keys.Left))
{
direction = Dir.Left;
isMoving = true;
}
if (kState.IsKeyDown(Keys.Up))
{
direction = Dir.Up;
isMoving = true;
}
if (kState.IsKeyDown(Keys.Down))
{
direction = Dir.Down;
isMoving = true;
}
if (isMoving)
{
Vector2 tempPos = position;
switch (direction)
{
case Dir.Right:
tempPos.X += speed * dt;
if (!Obstacle.didCollide(tempPos, radius) && tempPos.X < mapW)
{
position.X += speed * dt;
}
break;
case Dir.Left:
tempPos.X -= speed * dt;
if (!Obstacle.didCollide(tempPos, radius) && tempPos.X > 0)
{
position.X -= speed * dt;
}
break;
case Dir.Down:
tempPos.Y += speed * dt;
if (!Obstacle.didCollide(tempPos, radius) && tempPos.Y < mapH)
{
position.Y += speed * dt;
}
break;
case Dir.Up:
tempPos.Y -= speed * dt;
if (!Obstacle.didCollide(tempPos, radius) && tempPos.Y > 0)
{
position.Y -= speed * dt;
}
break;
default:
break;
}
}
if (kState.IsKeyDown(Keys.Space) && kStateOld.IsKeyUp(Keys.Space))
{
Projectile.projectiles.Add(new Projectile(position, direction));
}
kStateOld = kState;
}
protected override void Update(GameTime gameTime)
{
if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed || Keyboard.GetState().IsKeyDown(Keys.Escape))
{
Exit();
}
base.Update(gameTime);
// player movement
if (player.Health > 0)
{
player.Update(gameTime, myMap.WidthInPixels, myMap.HeightInPixels);
}
// for CAMERA to follow player but to stop when you get near the edge
float tempX = player.Position.X;
float tempY = player.Position.Y;
int camW = graphics.PreferredBackBufferWidth; // LEFT side of the map
int camH = graphics.PreferredBackBufferHeight; // TOP side of the map
int mapW = myMap.WidthInPixels; // RIGHT side of the map
int mapH = myMap.HeightInPixels; // BOTTOM side of the map
if (tempX < camW / 2) // if the player is too close to the LEFT side of the screen edge
{
tempX = camW / 2; // set cam.LookAt to be graphics.PreferredBackBufferWidth
}
if (tempY < camH / 2) // if the player is too close to the TOP side of the screen edge
{
tempY = camH / 2; // set cam.LookAt to be graphics.PreferredBackBufferHeight
}
if (tempX > (mapW - (camW / 2))) // RIGHT
{
tempX = mapW - (camW / 2);
}
if (tempY > (mapH - (camH / 2))) // RIGHT
{
tempY = mapH - (camH / 2); // BOTTOM
}
cam.LookAt(new Vector2(tempX, tempY));
// projectiles
foreach (Projectile proj in Projectile.projectiles)
{
proj.Update(gameTime);
}
// enemies
foreach (Enemy en in Enemy.enemies)
{
en.Update(gameTime, player.Position);
}
// hit detection between projectile and enemy and obstacle
foreach (Projectile proj in Projectile.projectiles)
{
foreach (Enemy en in Enemy.enemies)
{
int sum = proj.Radius + en.Radius;
if (Vector2.Distance(proj.Position, en.Position) < sum) // if the distance of the projectle and enemy is less than sum, then theres a collision
{
proj.Collided = true; // projectile disappers when hitting enemy
en.Health--; // take 1 health away
}
}
// collision between projectile and obstacle
if (Obstacle.didCollide(proj.Position, proj.Radius))
{
proj.Collided = true; // projectile disappers when hitting obstacle
}
}
// check for collision between player and enemy
foreach (Enemy en in Enemy.enemies)
{
int sum = en.Radius + player.Radius;
// if player and enemy are too close
if (Vector2.Distance(player.Position, en.Position) < sum && player.HealthTimer <= 0) // check distancing
{
player.Health--; // reduce player health by 1
player.HealthTimer = 1.5F; // 1.5 second delay between hits
}
}
// remove all projectiles that have collided
Projectile.projectiles.RemoveAll(p => p.Collided);
// remove enemies with health at 0
Enemy.enemies.RemoveAll(e => e.Health <= 0);
}
protected override void Update(GameTime gameTime)
{
if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed || Keyboard.GetState().IsKeyDown(Keys.Escape))
{
Exit();
}
if (player.Health > 0)
{
player.Update(gameTime);
}
float tempX = player.Position.X;
float tempY = player.Position.Y;
int camW = graphics.PreferredBackBufferWidth;
int camH = graphics.PreferredBackBufferHeight;
int mapW = myMap.WidthInPixels;
int mapH = myMap.HeightInPixels;
if (tempX < camW / 2)
{
tempX = camW / 2;
}
if (tempY < camH / 2)
{
tempY = camH / 2;
}
if (tempX > (mapW - (camW / 2)))
{
tempX = (mapW - (camW / 2));
}
if (tempY > (mapH - (camH / 2)))
{
tempY = (mapH - (camH / 2));
}
cam.LookAt(new Vector2(tempX, tempY));
foreach (Projectile proj in Projectile.projectiles)
{
proj.Update(gameTime);
}
foreach (Enemy en in Enemy.enemies)
{
en.Update(gameTime, player.Position);
}
foreach (Projectile proj in Projectile.projectiles)
{
foreach (Enemy en in Enemy.enemies)
{
int sum = proj.Radius + en.Radius;
if (Vector2.Distance(proj.Position, en.Position) < sum)
{
proj.Collided = true;
en.Health--;
}
}
if (Obstacle.didCollide(proj.Position, proj.Radius))
{
proj.Collided = true;
}
}
foreach (Enemy en in Enemy.enemies)
{
int sum = player.Radius + en.Radius;
if (Vector2.Distance(player.Position, en.Position) < sum && player.HealthTimer <= 0)
{
player.Health--;
player.HealthTimer = 1.5f;
}
}
Projectile.projectiles.RemoveAll(p => p.Collided);
Enemy.enemies.RemoveAll(e => e.Health <= 0);
base.Update(gameTime);
}
// Methods
// player movement
public void Update(GameTime gameTime, int mapW, int mapH) // int mapW, int mapH is for the right and bottom camera edges
{
KeyboardState kstate = Keyboard.GetState();
float dt = (float)gameTime.ElapsedGameTime.TotalSeconds;
// so players health doesnt decline too fast when hit
if (healthTimer > 0)
{
healthTimer -= dt;
}
// set the animation based on direction player is facing
anim = animations[(int)direction];
// this cycles through the player animations
if (isMoving)
{
anim.Update(gameTime);
}
else
{
anim.setFrame(1); // return animation to standing still frame
}
// this means every frame the player stops moving
isMoving = false;
// however if the keys are held, player will move
if (kstate.IsKeyDown(Keys.Right))
{
direction = Dir.Right;
isMoving = true;
}
if (kstate.IsKeyDown(Keys.Left))
{
direction = Dir.Left;
isMoving = true;
}
if (kstate.IsKeyDown(Keys.Up))
{
direction = Dir.Up;
isMoving = true;
}
if (kstate.IsKeyDown(Keys.Down))
{
direction = Dir.Down;
isMoving = true;
}
// movement speed
if (isMoving)
{
Vector2 tempPos = position; // for obstable collision
switch (direction)
{
case Dir.Down:
tempPos.Y += speed * dt; // put next move into variable and pass to Obstacle.didCollide
if (!Obstacle.didCollide(tempPos, radius) && tempPos.Y < mapH) // if collision is NOT made and not at edge of screen
{
position.Y += speed * dt; // do the actual movement
}
break;
case Dir.Up:
tempPos.Y -= speed * dt;
if (!Obstacle.didCollide(tempPos, radius) && tempPos.Y > 0)
{
position.Y -= speed * dt;
}
break;
case Dir.Left:
tempPos.X -= speed * dt;
if (!Obstacle.didCollide(tempPos, radius) && tempPos.X > 0)
{
position.X -= speed * dt;
}
break;
case Dir.Right:
tempPos.X += speed * dt;
if (!Obstacle.didCollide(tempPos, radius) && tempPos.X < mapW)
{
position.X += speed * dt;
}
break;
default:
break;
}
}
// when spacebar is pressed, create ONE projectile
if (kstate.IsKeyDown(Keys.Space) && kStateOld.IsKeyUp(Keys.Space))
{
Projectile.projectiles.Add(new Projectile(position, direction));
MySounds.projectileSound.Play(1f, 0.5f, 0f);
}
kStateOld = kstate;
}
public void Update(GameTime gameTime)
{
KeyboardState kState = Keyboard.GetState();
float dt = (float)gameTime.ElapsedGameTime.TotalSeconds;
if (healthTimer > 0)
{
healthTimer -= dt;
}
/// <summary>
/// this one liner is a better version of switch statement below.
/// Because "directions" is enum, so basically
/// it resolves to [0, 1, 2, 3]
/// </summary>
animSprite = animations[(int)direction];
//switch (direction)
//{
// case Dir.Down:
// animSprite = animations[0];
// break;
// case Dir.Up:
// animSprite = animations[1];
// break;
// case Dir.Left:
// animSprite = animations[2];
// break;
// case Dir.Right:
// animSprite = animations[3];
// break;
// default:
// break;
//}
// for stopping character to always moving
if (isMoving)
{
animSprite.Update(gameTime);
}
else
{
animSprite.SetFrame(1);
}
#region Changing direction
// every frame will be false and only if keys are down, it will be true
isMoving = false;
if (kState.IsKeyDown(Keys.Right))
{
direction = Dir.Right;
isMoving = true;
}
if (kState.IsKeyDown(Keys.Left))
{
direction = Dir.Left;
isMoving = true;
}
if (kState.IsKeyDown(Keys.Up))
{
direction = Dir.Up;
isMoving = true;
}
if (kState.IsKeyDown(Keys.Down))
{
direction = Dir.Down;
isMoving = true;
}
#endregion
if (isMoving)
{
// holding current player position at this particular moment
Vector2 tempPos = position;
switch (direction)
{
case Dir.Right:
tempPos.X += speed * dt;
if (!Obstacle.DidCollide(tempPos, radius))
{
position.X += speed * dt;
}
break;
case Dir.Left:
tempPos.X -= speed * dt;
if (!Obstacle.DidCollide(tempPos, radius))
{
position.X -= speed * dt;
}
break;
case Dir.Up:
tempPos.Y -= speed * dt;
if (!Obstacle.DidCollide(tempPos, radius))
{
position.Y -= speed * dt;
}
break;
case Dir.Down:
tempPos.Y += speed * dt;
if (!Obstacle.DidCollide(tempPos, radius))
{
position.Y += speed * dt;
}
break;
default:
break;
}
}
// this makes projectile shoot once only when Space key is pressed down
if (kState.IsKeyDown(Keys.Space) && kStateOld.IsKeyUp(Keys.Space))
{
Projectile.projectiles.Add(new Projectile(position, direction));
}
kStateOld = kState;
}
//=============
// ===UPDATE===
//=============
protected override void Update(GameTime gameTime)
{
if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed || Keyboard.GetState().IsKeyDown(Keys.Escape))
{
Exit();
}
// TODO: Add your update logic here
if (player.Health > 0)
{
player.Update(gameTime);
}
// shooting projectiles
foreach (Projectile proj in Projectile.projectiles)
{
proj.Update(gameTime);
}
// executing all enemies updates
foreach (Enemy en in Enemy.enemies)
{
en.Update(gameTime, player.Position);
}
// checking for enemy collision with projectiles.
// On collision destroying enemies and projectiles
foreach (Projectile proj in Projectile.projectiles)
{
foreach (Enemy en in Enemy.enemies)
{
int sum = proj.Radius + en.Radius;
if (Vector2.Distance(proj.Position, en.Position) < sum)
{
proj.Collided = true;
en.Health--;
}
}
if (Obstacle.DidCollide(proj.Position, proj.Radius))
{
proj.Collided = true;
}
}
// checking if enemies colliding with the player
foreach (Enemy en in Enemy.enemies)
{
int sum = player.Radius + en.Radius;
if (Vector2.Distance(player.Position, en.Position) < sum && player.HealthTimer <= 0)
{
player.Health--;
player.HealthTimer = 1.5f;
}
}
// actually destroying enemies and projectiles
Projectile.projectiles.RemoveAll(p => p.Collided == true);
Enemy.enemies.RemoveAll(e => e.Health <= 0);
base.Update(gameTime);
}// end of UPDATE