Add examples catalog with subcommand dispatch

- Extract game engine from package main to engine/ library package
- Create examples/ package with registry, Entry type, and BuilderDeps
- Register default world as an example (moved from main())
- Add combat example: two teams of units facing each other
- Rewrite main.go as thin dispatch: go run . example [name]
- Update README with examples catalog one-liner

1 files changed, 0 insertions, 41 deletions

diff --git a/order.go b/order.go
deleted file mode 100644
index 9c3d643..0000000
--- a/order.go
+++ /dev/null
@@ -1,41 +0,0 @@
-package main
-
-import (
-	"log/slog"
-
-	"age_of_empires/ecs"
-	"age_of_empires/monad"
-	"age_of_empires/physics"
-)
-
-type OrderKind int
-
-const (
-	OrderKindNone OrderKind = iota
-	OrderKindPatrol
-	OrderKindGather
-)
-
-func MainAction(g *Game, mainEntity ecs.Entity, target physics.Point, moveMap physics.MoveMap) {
-	mask := g.Mask[mainEntity]
-	targetEntity := g.entityAt(target)
-	gatherTargetRequired := ecs.CM_ResourceSource
-	mainGatherRequired := ecs.CM_ResourceGatherer | ecs.CM_Move
-	if targetEntity >= 0 && (g.Mask[targetEntity]&gatherTargetRequired == gatherTargetRequired) && (mask&mainGatherRequired == mainGatherRequired) {
-		Gather(g.getMoveMap(), g.Position[mainEntity], &g.Move[mainEntity], &g.Order[mainEntity], &g.ResourceGatherer[mainEntity], targetEntity, g.Position[targetEntity])
-		return
-	}
-	moveRequired := ecs.CM_Move | ecs.CM_Position
-	if mask&moveRequired == moveRequired {
-		position := g.Position[mainEntity]
-		g.Order[mainEntity] = OrderKindNone
-		g.Move[mainEntity] = physics.NewMove(position, target, moveMap)
-		return
-	}
-	if mask&ecs.CM_Spawn == ecs.CM_Spawn {
-		slog.Info("Setting spawn target")
-		spawn := &g.Spawn[mainEntity]
-		spawn.SpawnTarget = monad.Some(target)
-		return
-	}
-}