added transient entities: when crossed, turns into wall tile

components/components.go

@@ -11,9 +11,9 @@ type Renderable struct {
 }
 
 type Particle struct {
-	Show      bool
-	Index     int
-	Particles []*ebiten.Image
+	Show  bool
+	Index int
+	Tiles []*ebiten.Image
 }
 
 type Speed struct {
@@ -26,4 +26,7 @@ type Solid struct{}
 type Floor struct{}
 type Player struct{}
 type Collectible struct{}
-type Obstacle struct{}
+
+type Obstacle struct {
+	Direction int
+}

components/position.go

@@ -3,7 +3,6 @@ package components
 import (
 	"fmt"
 	"image"
-	"log/slog"
 	. "openquell/config"
 )
 
@@ -90,13 +89,14 @@ func (tile *Position) Intersects(moving *Position, velocity *Velocity) (bool, *P
 
 	is := tile.Rect.Bounds().Intersect(object.Rect.Bounds())
 	if is != image.ZR {
-		slog.Debug("Intersect",
-			"velocity", velocity.Data,
-			"player", moving.Rect,
-			"moved player", object.Rect,
-			"collision at", is,
-		)
-
+		/*
+			slog.Debug("Intersect",
+				"velocity", velocity.Data,
+				"player", moving.Rect,
+				"moved player", object.Rect,
+				"collision at", is,
+			)
+		*/
 		// collision, snap into neighbouring tile depending on the direction
 		switch velocity.Direction {
 		case West:

components/transient.go

@@ -0,0 +1,24 @@
+package components
+
+import (
+	"log"
+)
+
+type Transient struct {
+	Activated bool
+	Sprites   []string
+	Current   int // sprite index
+}
+
+func (trans *Transient) GetNext() string {
+	if len(trans.Sprites) > trans.Current {
+		trans.Current++
+		return trans.Sprites[trans.Current]
+	}
+
+	log.Fatalf("not enough sprites in transient tile, have %d sprites, index requested: %d",
+		len(trans.Sprites), trans.Current+1,
+	)
+
+	return ""
+}

components/velocity.go

@@ -6,8 +6,20 @@ import (
 
 // movement in relation to position
 type Velocity struct {
-	Data      Position
-	Direction int
+	Data       Position
+	Direction  int
+	PointingAt int
+}
+
+func (velocity *Velocity) Set(new *Velocity) {
+	velocity.Direction = new.Direction
+	velocity.Data.Set(&new.Data)
+}
+
+func (velocity *Velocity) ResetDirectionAndStop() {
+	velocity.Data.X = 0
+	velocity.Data.Y = 0
+	velocity.Direction = velocity.PointingAt
 }
 
 func (velocity *Velocity) Change(direction int) {