added sphere bounce over the map borders

game/game.go

@@ -1,6 +1,7 @@
 package game
 
 import (
+	"fmt"
 	"image"
 
 	"github.com/hajimehoshi/ebiten/v2"
@@ -12,10 +13,10 @@ type Game struct {
 	Bounds                    image.Rectangle
 	ScreenWidth, ScreenHeight int
 	CurrentLevel              int
-	Scenes                    []Scene
+	Scenes                    map[int]Scene
 }
 
-func NewGame(width, height, startlevel int) *Game {
+func NewGame(width, height, startlevel int, startscene int) *Game {
 	world := ecs.NewWorld()
 
 	game := &Game{
@@ -24,10 +25,12 @@ func NewGame(width, height, startlevel int) *Game {
 		World:        &world,
 		ScreenWidth:  width,
 		ScreenHeight: height,
+		Scenes:       map[int]Scene{},
 	}
 
-	levelscene := NewLevelScene(game, startlevel)
-	game.Scenes = append(game.Scenes, levelscene)
+	game.Scenes[Play] = NewLevelScene(game, startlevel)
+
+	fmt.Println(game.World.Stats().String())
 
 	return game
 }

game/grid.go

@@ -8,6 +8,7 @@ import (
 	"openquell/components"
 	. "openquell/config"
 
+	"github.com/alecthomas/repr"
 	"github.com/mlange-42/arche/generic"
 )
 
@@ -90,7 +91,6 @@ func (grid *Grid) GetSolidNeighborPosition(
 		return false, nil
 	}
 
-	fmt.Println(position)
 	// set to true,  ifwe are already on the last  tile in the current
 	// direction, i.e. on the edge of the grid
 	edge := true
@@ -120,9 +120,43 @@ func (grid *Grid) GetSolidNeighborPosition(
 	}
 
 	newpos := components.NewPosition(neighborpos, grid.Tilesize)
-	fmt.Println(newpos, edge)
+	repr.Println(newpos)
 
-	if !edge && grid.Map[*neighborpos].Solid {
+	if !edge && grid.Map[neighborpos].Solid {
+		return true, newpos
+	}
+
+	return false, nil
+}
+
+func (grid *Grid) BumpEdge(
+	pos *components.Position,
+	velocity *components.Velocity) (bool, *components.Position) {
+
+	x := pos.X + velocity.Data.X
+	y := pos.Y + velocity.Data.Y
+
+	if x < 0 || x > grid.Width-grid.Tilesize || y < 0 || y > grid.Height-grid.Tilesize {
+		newpos := &components.Position{}
+		X := pos.X
+		Y := pos.Y
+
+		switch velocity.Direction {
+		case East:
+			X = 0
+			fmt.Println("east X=0")
+		case West:
+			X = grid.Width - grid.Tilesize
+			fmt.Println("west X=max")
+		case South:
+			Y = 0
+			fmt.Println("south y=0")
+		case North:
+			Y = grid.Height - grid.Tilesize
+			fmt.Println("north y=max")
+		}
+
+		newpos.Update(X, Y, grid.Tilesize)
 		return true, newpos
 	}
 

game/levels.go

@@ -25,10 +25,7 @@ type Level struct {
 }
 
 func NewLevel(game *Game, cellsize int, plan *assets.RawLevel) *Level {
-	//grid := NewGrid(game, cellsize, plan)
-
 	return &Level{
-		//Grid:        grid,
 		Mapslice:    LevelToSlice(game, plan, cellsize),
 		Cellsize:    cellsize,
 		World:       game.World,
@@ -40,19 +37,13 @@ func NewLevel(game *Game, cellsize int, plan *assets.RawLevel) *Level {
 }
 
 func (level *Level) Update() {
-	//playermapper := generic.NewMap3[components.Position, components.Velocity, components.Renderable](level.World)
 	positionid := ecs.ComponentID[components.Position](level.World)
 	velocityid := ecs.ComponentID[components.Velocity](level.World)
 	playerid := ecs.ComponentID[components.Player](level.World)
-	//solidid := ecs.ComponentID[components.Solid](level.World)
-	//renderid := ecs.ComponentID[components.Renderable](level.World)
 
 	selector := filter.All(positionid, velocityid, playerid)
 	query := level.World.Query(selector)
 
-	//tileselector := filter.All(positionid, solidid, renderid)
-	//tilequery := level.World.Query(tileselector)
-
 	for query.Next() {
 		playerposition := (*components.Position)(query.Get(positionid))
 		velocity := (*components.Velocity)(query.Get(velocityid))
@@ -90,17 +81,23 @@ func (level *Level) Update() {
 		*/
 
 		if velocity.Moving() {
-			ok, tilepos := level.Grid.GetSolidNeighborPosition(playerposition, velocity, true)
+			ok, newpos := level.Grid.BumpEdge(playerposition, velocity)
 			if ok {
-				intersects, newpos := tilepos.Intersects(playerposition, velocity)
-				if intersects {
-					fmt.Printf("collision detected. tile: %s\n", tilepos)
-					fmt.Printf("                  player: %s\n", playerposition)
-					fmt.Printf("                     new: %s\n", newpos)
+				fmt.Printf("falling off the edge, new pos: %v\n", newpos)
+				playerposition.Set(newpos)
+			} else {
+				ok, tilepos := level.Grid.GetSolidNeighborPosition(playerposition, velocity, true)
+				if ok {
+					intersects, newpos := tilepos.Intersects(playerposition, velocity)
+					if intersects {
+						fmt.Printf("collision detected. tile: %s\n", tilepos)
+						fmt.Printf("                  player: %s\n", playerposition)
+						fmt.Printf("                     new: %s\n", newpos)
 
-					playerposition.Set(newpos)
-					fmt.Printf("              player new: %s\n", playerposition)
-					velocity.Change(Stop)
+						playerposition.Set(newpos)
+						fmt.Printf("              player new: %s\n", playerposition)
+						velocity.Change(Stop)
+					}
 				}
 			}
 		}

game/levelscene.go

@@ -0,0 +1,49 @@
+package game
+
+import (
+	"openquell/assets"
+
+	"github.com/hajimehoshi/ebiten/v2"
+)
+
+type LevelScene struct {
+	CurrentLevel int
+	Levels       []*Level
+	Next         int
+	Whoami       int
+}
+
+// Implements the actual playing Scene
+func NewLevelScene(game *Game, startlevel int) Scene {
+	scene := &LevelScene{CurrentLevel: startlevel, Whoami: Play}
+
+	scene.GenerateLevels(game)
+	scene.Levels[game.CurrentLevel].SetupGrid(game)
+
+	return scene
+}
+
+func (scene *LevelScene) GenerateLevels(game *Game) {
+	for _, level := range assets.Levels {
+		scene.Levels = append(scene.Levels, NewLevel(game, 32, &level))
+	}
+}
+
+// Interface methods
+func (scene *LevelScene) SetNext() int {
+	if scene.Whoami != scene.Next {
+		return scene.Next
+	}
+
+	return 0
+}
+
+func (scene *LevelScene) Update() error {
+	scene.Levels[scene.CurrentLevel].Update()
+	return nil
+}
+
+func (scene *LevelScene) Draw(screen *ebiten.Image) {
+	screen.Clear()
+	scene.Levels[scene.CurrentLevel].Draw(screen)
+}

game/scene.go

@@ -1,51 +1,24 @@
 package game
 
 import (
-	"fmt"
-	"openquell/assets"
-
 	"github.com/hajimehoshi/ebiten/v2"
 )
 
+const (
+	Welcome = iota
+	Select
+	Play
+	About
+	Settings
+)
+
 // Wrapper for  different screens  to be  shown, as  Welcome, Options,
 // About, Select Level and of course the actual Levels.
 // Scenes are responsible for screen clearing! That way a scene is able
 // to render its content onto the running level, e.g. the options scene
 // etc.
 type Scene interface {
+	SetNext() int
 	Update() error
 	Draw(screen *ebiten.Image)
 }
-
-type LevelScene struct {
-	Game         *Game
-	CurrentLevel int
-	Levels       []*Level
-}
-
-// Implements the actual playing Scene
-func NewLevelScene(game *Game, startlevel int) Scene {
-	scene := &LevelScene{Game: game, CurrentLevel: startlevel}
-
-	scene.GenerateLevels()
-	scene.Levels[game.CurrentLevel].SetupGrid(game)
-	fmt.Println(game.World.Stats().String())
-
-	return scene
-}
-
-func (scene *LevelScene) GenerateLevels() {
-	for _, level := range assets.Levels {
-		scene.Levels = append(scene.Levels, NewLevel(scene.Game, 32, &level))
-	}
-}
-
-func (scene *LevelScene) Update() error {
-	scene.Levels[scene.CurrentLevel].Update()
-	return nil
-}
-
-func (scene *LevelScene) Draw(screen *ebiten.Image) {
-	screen.Clear()
-	scene.Levels[scene.CurrentLevel].Draw(screen)
-}