public static void Run(
Ecs.Registry ecsRegistry,
SpriteBatch spriteBatch,
Camera camera
)
{
HashSet <Ecs.Entity> entities = ecsRegistry.GetEntities(
typeof(SpriteComp),
typeof(PositionComp)
);
foreach (Ecs.Entity entity in entities)
{
SpriteComp spriteComp = ecsRegistry
.GetComponentUnsafe <SpriteComp>(entity);
PositionComp positionComp = ecsRegistry
.GetComponentUnsafe <PositionComp>(entity);
if (camera.IsInRange(positionComp.data))
{
Render(spriteComp, positionComp, spriteBatch, camera);
}
}
}
// To optimize drawing performance, check that the sprite is in range
// for the camera before calling this
public static void Render(
SpriteComp spriteComp,
PositionComp positionComp,
SpriteBatch spriteBatch,
Camera camera
)
{
var drawingPos =
camera.GetDrawingPosition(positionComp.data) -
spriteComp.destOffset;
DrawingPosRectangle destPosRectangle = GetCenteredDrawingPosRectangle(
drawingPos,
camera.Scale(spriteComp.destRectangle)
);
// TODO: Figure out how to use origin with rotation
spriteBatch.Draw(
spriteComp.texture,
destPosRectangle,
spriteComp.texturePosRectangle,
spriteComp.tint,
spriteComp.rotation,
new Vector2(0, 0),
spriteComp.effects,
1.0f
);
}
private static void Render(
Tiles.Visible tile,
int tileIndex, // Tile index in its layer
Map map,
ContentManager contentManager,
SpriteBatch spriteBatch,
Camera camera
)
{
if (tile.gid == 0)
{
// Skip empty tiles
return;
}
PhysicalVector2 tilePos = GetTilePosition(map, tileIndex);
var position = new Ecs.Components.Position()
{
data = tilePos
};
Tileset tileset = GetTilesetOfTile(map, tile.gid);
Texture2D tilesetTexture = GetTexture(contentManager, tileset);
var texturePosRectangle = GetTexturePosRectangle(
tile.gid,
tileset,
map
);
var destRectangle = GetDestRectangle(map);
SpriteEffects effects = GetSpriteEffects(tile);
var sprite = new EcsExt.Components.Visibles.Sprite()
{
texture = tilesetTexture,
texturePosRectangle = texturePosRectangle,
destRectangle = destRectangle,
tint = Color.White,
effects = effects
};
EcsExt.Systems.SpriteRender.Render(
sprite,
position,
spriteBatch,
camera
);
}
private static void Render(
GameTile tile,
int tileIndex, // Tile index in its layer
Map map,
ContentManager contentManager,
SpriteBatch spriteBatch,
Camera camera
)
{
if (tile.kind == GameTile.Kind.Empty)
{
// Skip empty tiles
return;
}
PhysicalVector2 tilePos = GetTilePosition(map, tileIndex);
var position = new Ecs.Components.Position()
{
data = tilePos
};
Tileset tileset = map.GameTileset;
Texture2D tilesetTexture = GetTexture(contentManager, tileset);
int tileFrame = tile.GetTileFrame;
var texturePosRectangle = GetTexturePosRectangleWithTileFrame(
tileFrame,
tileset,
map
);
var destRectangle = GetDestRectangle(map);
var sprite = new EcsExt.Components.Visibles.Sprite()
{
texture = tilesetTexture,
texturePosRectangle = texturePosRectangle,
destRectangle = destRectangle,
tint = Color.White
};
EcsExt.Systems.SpriteRender.Render(
sprite,
position,
spriteBatch,
camera
);
}
public static void Run(Registry registry)
{
HashSet <Entity> entities = registry.GetEntities(
typeof(PositionComp),
typeof(VelocityComp)
);
foreach (Entity entity in entities)
{
VelocityComp velocityComp = registry
.GetComponentUnsafe <VelocityComp>(entity);
PositionComp positionComp = registry
.GetComponentUnsafe <PositionComp>(entity);
// Decay velocity to simulate friction
velocityComp.data *= velocityComp.decay;
velocityComp.data = RoundIfZero(velocityComp.data);
positionComp.data += velocityComp.data;
}
}
