Added tilemap spawning

cardinal/component/tilemap.go

@@ -0,0 +1,56 @@
+package component
+
+type TileType string
+type BuildingType string
+
+const MapWidth = 3
+const MapHeight = 3
+
+const (
+	Generic TileType = "Generic"
+	Wood    TileType = "Wood"
+	Water   TileType = "Water"
+	Stone   TileType = "Stone"
+)
+
+const (
+	None           BuildingType = "None"
+	Main           BuildingType = "Main"
+	Woodcutter     BuildingType = "Woodcutter"
+	Quarry         BuildingType = "Quarry"
+	FishermanHut   BuildingType = "FishermanHut"
+	Shipyard       BuildingType = "Shipyard"
+	Warehouse      BuildingType = "Warehouse"
+	UnitLimitHouse BuildingType = "UnitLimitHouse"
+)
+
+type Tile struct {
+	Tile     TileType     `json:"tile"`
+	Building BuildingType `json:"building"`
+}
+
+func GetDefaultTiles() *map[int]Tile {
+	tiles := map[int]Tile{
+		0: {Tile: Generic, Building: Warehouse},
+		1: {Tile: Stone, Building: Quarry},
+		2: {Tile: Wood, Building: FishermanHut},
+		3: {Tile: Water, Building: UnitLimitHouse},
+		4: {Tile: Generic, Building: Shipyard},
+		5: {Tile: Generic, Building: None},
+		6: {Tile: Water, Building: UnitLimitHouse},
+		7: {Tile: Generic, Building: Shipyard},
+		8: {Tile: Generic, Building: None},
+	}
+
+	return &tiles
+}
+
+type TileMap struct {
+	Tiles  *map[int]Tile `json:"tiles"`
+	Width  int           `json:"width"`
+	Height int           `json:"height"`
+}
+
+func (TileMap) Name() string {
+	return "TileMap"
+}

cardinal/main.go

@@ -31,6 +31,7 @@ func MustInitWorld(w *cardinal.World) {
 	Must(
 		cardinal.RegisterComponent[component.Player](w),
 		cardinal.RegisterComponent[component.Health](w),
+		cardinal.RegisterComponent[component.TileMap](w),
 	)
 
 	// Register messages (user action)

cardinal/system/player_spawner.go

@@ -2,6 +2,8 @@ package system
 
 import (
 	"fmt"
+	"pkg.world.dev/world-engine/cardinal/search/filter"
+	"pkg.world.dev/world-engine/cardinal/types"
 
 	"pkg.world.dev/world-engine/cardinal"
 
@@ -19,9 +21,38 @@ func PlayerSpawnerSystem(world cardinal.WorldContext) error {
 	return cardinal.EachMessage[msg.CreatePlayerMsg, msg.CreatePlayerResult](
 		world,
 		func(create cardinal.TxData[msg.CreatePlayerMsg]) (msg.CreatePlayerResult, error) {
+			var playerExist = false
+			var err error
+			err = cardinal.NewSearch().Entity(
+				filter.Contains(filter.Component[comp.Player]())).
+				Each(world, func(id types.EntityID) bool {
+					var player *comp.Player
+					player, err = cardinal.GetComponent[comp.Player](world, id)
+					if err != nil {
+						return false
+					}
+
+					// Terminates the search if the player is found
+					if player.Nickname == create.Msg.Nickname {
+						playerExist = true
+						return false
+					}
+
+					// Continue searching if the player is not the target player
+					return true
+				})
+			if err != nil {
+				return msg.CreatePlayerResult{}, fmt.Errorf("error creating player: %w", err)
+			}
+
+			if playerExist {
+				return msg.CreatePlayerResult{Success: false},
+					fmt.Errorf("error creating player, player with nickname %s already exist", create.Msg.Nickname)
+			}
+
 			id, err := cardinal.Create(world,
 				comp.Player{Nickname: create.Msg.Nickname},
-				comp.Health{HP: InitialHP},
+				comp.TileMap{Tiles: comp.GetDefaultTiles(), Width: comp.MapWidth, Height: comp.MapHeight},
 			)
 			if err != nil {
 				return msg.CreatePlayerResult{}, fmt.Errorf("error creating player: %w", err)

cardinal/system/utils.go

@@ -2,12 +2,10 @@ package system
 
 import (
 	"fmt"
-
+	comp "oceanus-shard/component"
 	"pkg.world.dev/world-engine/cardinal"
 	"pkg.world.dev/world-engine/cardinal/search/filter"
 	"pkg.world.dev/world-engine/cardinal/types"
-
-	comp "oceanus-shard/component"
 )
 
 // queryTargetPlayer queries for the target player's entity ID and health component.