// given point on the screen identify the cursor
public System GetSystem(Vector2 targetSize, Point p)
{
Vector2 worldSize = new Vector2(WorldWidth, WorldHeight);
ScreenUtils su = new ScreenUtils(targetSize, worldSize, 40);
foreach (System system in System.Systems)
{
Vector2 screenPos = su.WorldToScreen(system.Position);
Rectangle screenRect = new Rectangle((int)screenPos.X - SystemHitR, (int)screenPos.Y - SystemHitR,
SystemHitR * 2, SystemHitR * 2);
if (screenRect.Contains(p))
{
return(system);
}
}
return(null);
}
public override void Draw(Vector2 targetSize)
{
float aspect = targetSize.X / (float)targetSize.Y;
ScreenUtils su = new ScreenUtils(targetSize, new Vector2(aspect * 2, 2), 0);
DrawColoredRect(new Vector2(0, 0),
targetSize,
Color.Black);
foreach (Streak streak in streaks)
{
DrawColoredRect(su.WorldToScreen(streak.Position),
new Vector2(streak.Distance, streak.Thickness),
Color.White);
}
{
float desiredHeight = su.ScaleToScreen(boardingRegion.Height);
Vector2 textureSize = new Vector2(boardingShip.Width, boardingShip.Height);
Vector2 invScale = new Vector2(su.ScaleToScreen(boardingRegion.Width), su.ScaleToScreen(boardingRegion.Height)) / textureSize;
Vector2 shipScreenSize = invScale * textureSize;
Vector2 shipPos = su.WorldToScreen(boardingRegion.Position);
GameSpriteBatch().Draw(boardingShip,
shipPos - 0.5f * shipScreenSize,
null, // source rect
Color.White,
0,
Vector2.Zero,
invScale,
SpriteEffects.None,
0);
}
{
float desiredHeight = su.ScaleToScreen(enemyRegion.Height);
Vector2 textureSize = new Vector2(enemy.Width, enemy.Height);
Vector2 invScale = new Vector2(su.ScaleToScreen(enemyRegion.Width), su.ScaleToScreen(enemyRegion.Height)) / textureSize;
Vector2 shipScreenSize = invScale * textureSize;
Vector2 shipPos = su.WorldToScreen(enemyRegion.Position);
GameSpriteBatch().Draw(enemy,
shipPos - 0.5f * shipScreenSize,
null, // source rect
Color.White,
0,
Vector2.Zero,
invScale,
SpriteEffects.None,
0);
}
{
float shipWorldSize = 0.5f;
float desiredSize = su.ScaleToScreen(shipWorldSize);
float invScale = desiredSize / (float)battleship.Height;
Vector2 shipPos = su.WorldToScreen(shipPosW);
Vector2 shipScreenSize = new Vector2(invScale * battleship.Width, invScale * battleship.Height);
GameSpriteBatch().Draw(battleship,
shipPos - 0.5f * shipScreenSize,
null, // source rect
Color.White,
0,
Vector2.Zero,
invScale,
SpriteEffects.None,
0);
float desiredSize2 = su.ScaleToScreen(shipWorldSize * 0.5f);
float invScale2 = desiredSize2 / (float)turret.Height;
Vector2 turretScreenSize = new Vector2(invScale2 * turret.Width, invScale2 * turret.Height);
Vector2 turretPos = su.WorldToScreen(turretPosW);
GameSpriteBatch().Draw(turret,
turretPos,
null, // source rect
Color.White,
turretRotation,
0.5f * new Vector2(turret.Width, turret.Height),
invScale2,
SpriteEffects.None,
0);
}
foreach (Laser laser in friendlyLasers)
{
Vector2 laserPos = su.WorldToScreen(laser.Pos);
Vector2 laserTailPos = su.WorldToScreen(laser.Pos - laser.Dir * laser.Length);
DrawColoredLine(laserPos, laserTailPos, Color.Red, 4);
}
int fullChargeWidth = 80;
int chargePadding = 4;
Vector2 bufferOrigin = new Vector2(targetSize.X * 0.5f, targetSize.Y - 100);
//int maxLasers = 4;
//float laserBuffer = 0;
for (int i = 0; i < maxLasers; i++)
{
float chargeWidth = (float)Math.Min(1.0f, laserBuffer - i) * fullChargeWidth;
DrawColoredRect(bufferOrigin + new Vector2((fullChargeWidth + chargePadding) * i, 0), new Vector2(fullChargeWidth, 20), Color.Orange);
DrawColoredRect(bufferOrigin + new Vector2((fullChargeWidth + chargePadding) * i, 0), new Vector2(chargeWidth, 20), Color.Red);
}
}
public override void Update(Vector2 targetSize, GameTime gameTime)
{
float aspect = targetSize.X / (float)targetSize.Y;
ScreenUtils su = new ScreenUtils(targetSize, new Vector2(aspect * 2, 2), 0);
Vector2 turretD = su.ScreenToWorld(MouseTracker().Position) - turretPosW;
float dstTurretRotation = (float)(-Math.Atan2(-turretD.Y, turretD.X)) + (float)Math.PI * 1.5f;
float totalTime = (float)gameTime.TotalGameTime.TotalSeconds;
float elapsedTime = (float)gameTime.ElapsedGameTime.TotalSeconds;
//laserBuffer = laserBuffer + gameTime.
// NOTE: this code sucks, but I'm tired
if (turretRotation < dstTurretRotation)
{
turretRotation += 0.5f * elapsedTime;
}
else
{
turretRotation -= 0.5f * elapsedTime;
}
laserBuffer = Math.Min(laserBuffer + elapsedTime * 0.5f, maxLasers);
MouseTracker().Update();
if (MouseTracker().WasPressed() && laserBuffer >= 1)
{
//Vector2 target = su.ScreenToWorld(MouseTracker().Position);
Laser laser = new Laser();
laser.Pos = turretPosW;
laser.Dir = new Vector2(-(float)Math.Sin(turretRotation), (float)Math.Cos(turretRotation)); //Vector2.Normalize(target - laser.Pos);
laser.Length = 0.1f;
laser.Speed = 0.05f;
friendlyLasers.Add(laser);
laserBuffer -= 1;
if (boardingState == BoardingState.PREPARED)
{
boardingState = BoardingState.BOARDING;
}
}
enemyRegion.Position = new Vector2(0.4f * (float)Math.Sin(totalTime * 1.5f), -0.6f + 0.02f * (float)Math.Cos(totalTime * 0.5f));
if (boardingState == BoardingState.PREPARED)
{
boardingRegion.Position = enemyRegion.Position;
}
else if (boardingState == BoardingState.BOARDING)
{
Vector2 d = shipPosW - boardingRegion.Position;
d.Normalize();
boardingRegion.Position += d * 0.1f * elapsedTime;
}
else if (boardingState == BoardingState.DESTROYED)
{
// TODO: animate this, use acceleration
boardingRegion.Acceleration = new Vector2(1, 0);
boardingRegion.Velocity = boardingRegion.Acceleration * elapsedTime;
boardingRegion.Position += boardingRegion.Velocity;
//asset.Velocity = asset.Acceleration * elapsedTime;
//asset.Position += su.ScaleToScreen(asset.Velocity);
}
shipPosW = new Vector2(0.2f * (float)Math.Sin(totalTime), 0.6f + 0.02f * (float)Math.Cos(totalTime * 0.5f));
turretPosW = shipPosW + new Vector2(0.26f, 0.0f);
for (int i = 0; i < NUM_STREAKS; i++)
{
float speed = 2 + (i % 4);
float x = -aspect + (float)Math.Cos(i) + speed * totalTime; //20 + 50 * (float)Math.Cos(i);
int screenWidths = (int)(x / (2 * aspect));
x = x - screenWidths * (2 * aspect) - aspect;
float y = 2 * ((i + 1.0f) / (NUM_STREAKS + 1)) - 1; //+ 30.0f * (float)Math.Sin(i);
streaks[i].Position = new Vector2(x, y);
streaks[i].Distance = targetSize.X * 0.002f * speed;
streaks[i].Thickness = 2;
}
// remove distant lasers
List <Laser> unimpactedLasers = new List <Laser>();
foreach (Laser laser in friendlyLasers)
{
Vector2 prevPos = laser.Pos;
Vector2 newPos = laser.Pos + laser.Dir * laser.Speed;
Vector2?enemyImpactPos = enemyRegion.Trace(prevPos, newPos);
Vector2?boardingImpactPos = boardingRegion.Trace(prevPos, newPos);
float boardingDistance = shipPosW.Y - boardingRegion.Position.Y;
if (boardingState == BoardingState.BOARDING && boardingImpactPos != null && boardingDistance > 0.15f)
{
var explosion = new TextureAnimationAsset(explosionTexture, 3, 5);
explosion.Position = su.WorldToScreen(boardingImpactPos.Value);
explosion.Acceleration = new Vector2(1, 0);
AddChild("explosion_effect", explosion);
boardingHealth--;
if (boardingHealth == 0)
{
boardingState = BoardingState.DESTROYED;
}
}
else if (enemyImpactPos != null)
{
var explosion = new TextureAnimationAsset(explosionTexture, 3, 5);
explosion.Position = su.WorldToScreen(enemyImpactPos.Value);
explosion.Acceleration = new Vector2(1, 0);
AddChild("explosion_effect", explosion);
}
else if (laser.Pos.Length() < 10)
{
unimpactedLasers.Add(laser);
}
laser.Pos = laser.Pos + laser.Dir * laser.Speed;
}
friendlyLasers = unimpactedLasers;
foreach (KeyValuePair <string, Asset> pair in children)
{
if (typeof(TextureAnimationAsset).IsInstanceOfType(pair.Value))
{
TextureAnimationAsset asset = (TextureAnimationAsset)pair.Value;
asset.Velocity = asset.Acceleration * elapsedTime;
asset.Position += su.ScaleToScreen(asset.Velocity);
}
}
bool isNotFinishedExplosion(Asset asset)
{
if (typeof(TextureAnimationAsset).IsInstanceOfType(asset))
{
TextureAnimationAsset anim = (TextureAnimationAsset)asset;
return(!anim.IsFinished());
}
return(true);
}
children = children.FindAll(pair => isNotFinishedExplosion(pair.Value));
}
public override void Draw(Vector2 targetSize)
{
if (systemTexture == null)
{
systemTexture = Game().Content.Load <Texture2D>("system");
playerTexture = Game().Content.Load <Texture2D>("galaxy_player_ship");
}
Vector2 worldSize = new Vector2(WorldWidth, WorldHeight);
ScreenUtils su = new ScreenUtils(targetSize, worldSize, 40);
// draw hover system
if (hoverSystem != null)
{
Vector2 hoverPos = su.WorldToScreen(hoverSystem.Position) - new Vector2(SystemHitR, SystemHitR);
Vector2 texToScreen = new Vector2(SystemHitR * 2, SystemHitR * 2);
DrawColoredRect(hoverPos, texToScreen, Color.YellowGreen);
}
// draw connections
//
foreach (System system in System.Systems)
{
Vector2 systemScreenPos = su.WorldToScreen(system.Position);
// NOTE: this draws each line twice
foreach (System neighbor in system.Neighbors)
{
Vector2 neighborScreenPos = su.WorldToScreen(neighbor.Position);
if (travelPath != null && travelPath.Contains(system) && travelPath.Contains(neighbor))
{
DrawColoredLine(systemScreenPos, neighborScreenPos, Color.Gray * 0.4f, 1);
}
}
}
// draw systems
//
foreach (System system in System.Systems)
{
float spriteRadius = 3 + (int)Math.Ceiling(Math.Sqrt(system.Planets.Count));
Vector2 systemScreenPos = su.WorldToScreen(system.Position);
// draw system
//
float texToScreenRatio = spriteRadius * 2.0f / systemTexture.Width;
Vector2 texToScreen = new Vector2(texToScreenRatio, texToScreenRatio);
GameSpriteBatch().Draw(systemTexture,
systemScreenPos - new Vector2(spriteRadius, spriteRadius),
null, // source rect
system.Color,
0,
Vector2.Zero,
texToScreen,
SpriteEffects.None,
0);
// draw label
//
float nameWidth = NormalFont().MeasureString(system.Name).X;
Vector2 namePos = su.WorldToScreen(system.Position) + new Vector2(-nameWidth * 0.5f, 10);
namePos = new Vector2((int)namePos.X, (int)namePos.Y);
GameSpriteBatch().DrawString(NormalFont(), system.Name, namePos, Color.White);
}
// draw player
//
Vector2 screenPos = su.WorldToScreen(playerPos);
GameSpriteBatch().Draw(playerTexture, screenPos);
}