func (rock *RockSpawnSystem) Update(dt float32) {
// 4% change of spawning a rock each frame
if rand.Float32() < .96 {
return
}
position := engo.Point{
X: rand.Float32() * engo.GameWidth(),
Y: -32,
}
NewRock(rock.world, position)
}
func (pong *PongGame) Setup(w *ecs.World) {
engo.SetBackground(color.Black)
w.AddSystem(&engo.RenderSystem{})
w.AddSystem(&engo.CollisionSystem{})
w.AddSystem(&engo.MouseSystem{})
w.AddSystem(&SpeedSystem{})
w.AddSystem(&ControlSystem{})
w.AddSystem(&BounceSystem{})
w.AddSystem(&ScoreSystem{})
basicFont = (&engo.Font{URL: "Roboto-Regular.ttf", Size: 32, FG: color.NRGBA{255, 255, 255, 255}})
if err := basicFont.CreatePreloaded(); err != nil {
log.Fatalln("Could not load font:", err)
}
ballTexture := engo.Files.Image("ball.png")
ball := Ball{BasicEntity: ecs.NewBasic()}
ball.RenderComponent = engo.RenderComponent{
Drawable: ballTexture,
Scale: engo.Point{2, 2},
}
ball.SpaceComponent = engo.SpaceComponent{
Position: engo.Point{(engo.GameWidth() - ballTexture.Width()) / 2, (engo.GameHeight() - ballTexture.Height()) / 2},
Width: ballTexture.Width() * ball.RenderComponent.Scale.X,
Height: ballTexture.Height() * ball.RenderComponent.Scale.Y,
}
ball.CollisionComponent = engo.CollisionComponent{
Main: true,
Solid: true,
}
ball.SpeedComponent = SpeedComponent{Point: engo.Point{300, 1000}}
// Add our entity to the appropriate systems
for _, system := range w.Systems() {
switch sys := system.(type) {
case *engo.RenderSystem:
sys.Add(&ball.BasicEntity, &ball.RenderComponent, &ball.SpaceComponent)
case *engo.CollisionSystem:
sys.Add(&ball.BasicEntity, &ball.CollisionComponent, &ball.SpaceComponent)
case *SpeedSystem:
sys.Add(&ball.BasicEntity, &ball.SpeedComponent, &ball.SpaceComponent)
case *BounceSystem:
sys.Add(&ball.BasicEntity, &ball.SpeedComponent, &ball.SpaceComponent)
}
}
score := Score{BasicEntity: ecs.NewBasic()}
score.RenderComponent = engo.RenderComponent{Drawable: basicFont.Render(" ")}
score.SpaceComponent = engo.SpaceComponent{
Position: engo.Point{100, 100},
Width: 100,
Height: 100,
}
// Add our entity to the appropriate systems
for _, system := range w.Systems() {
switch sys := system.(type) {
case *engo.RenderSystem:
sys.Add(&score.BasicEntity, &score.RenderComponent, &score.SpaceComponent)
case *ScoreSystem:
sys.Add(&score.BasicEntity, &score.RenderComponent, &score.SpaceComponent)
}
}
engo.Input.RegisterAxis("wasd", engo.AxisKeyPair{engo.W, engo.S})
engo.Input.RegisterAxis("arrows", engo.AxisKeyPair{engo.ArrowUp, engo.ArrowDown})
schemes := []string{"wasd", "arrows"}
score.RenderComponent = engo.RenderComponent{Drawable: basicFont.Render(" ")}
score.SpaceComponent = engo.SpaceComponent{
Position: engo.Point{100, 100},
Width: 100,
Height: 100,
}
// Add our entity to the appropriate systems
for _, system := range w.Systems() {
switch sys := system.(type) {
case *engo.RenderSystem:
sys.Add(&score.BasicEntity, &score.RenderComponent, &score.SpaceComponent)
case *ScoreSystem:
sys.Add(&score.BasicEntity, &score.RenderComponent, &score.SpaceComponent)
}
}
paddleTexture := engo.Files.Image("paddle.png")
for i := 0; i < 2; i++ {
paddle := Paddle{BasicEntity: ecs.NewBasic()}
paddle.RenderComponent = engo.RenderComponent{
Drawable: paddleTexture,
Scale: engo.Point{2, 2},
}
x := float32(0)
if i != 0 {
x = 800 - 16
}
paddle.SpaceComponent = engo.SpaceComponent{
Position: engo.Point{x, (engo.GameHeight() - paddleTexture.Height()) / 2},
Width: paddle.RenderComponent.Scale.X * paddleTexture.Width(),
Height: paddle.RenderComponent.Scale.Y * paddleTexture.Height(),
}
paddle.ControlComponent = ControlComponent{Scheme: schemes[i]}
paddle.CollisionComponent = engo.CollisionComponent{
Main: false,
Solid: true,
}
// Add our entity to the appropriate systems
for _, system := range w.Systems() {
switch sys := system.(type) {
case *engo.RenderSystem:
sys.Add(&paddle.BasicEntity, &paddle.RenderComponent, &paddle.SpaceComponent)
case *engo.CollisionSystem:
sys.Add(&paddle.BasicEntity, &paddle.CollisionComponent, &paddle.SpaceComponent)
case *ControlSystem:
sys.Add(&paddle.BasicEntity, &paddle.ControlComponent, &paddle.SpaceComponent)
}
}
}
}