58 lines
1.9 KiB
Go
58 lines
1.9 KiB
Go
package spawn
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import (
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"aego/asset"
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"aego/core/mathx"
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"aego/scene"
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"aego/script/bind"
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)
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func spawner(c *bind.Ctx) *Service {
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s := Of(c.World)
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if s == nil {
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c.Fail("spawning works only during Play")
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}
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return s
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}
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func installScript(m *bind.Module) {
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bind.Func2(m, "Spawn", func(c *bind.Ctx, ref asset.Ref[asset.Prefab], pos mathx.Vec2) scene.NodeHandle {
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s := spawner(c)
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if s == nil {
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return scene.NodeHandle{}
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}
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h, err := s.Spawn(ref.ID, scene.NodeHandle{}, pos, 0)
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if err != nil {
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c.Fail(err.Error())
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}
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return h
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}, bind.Doc("Spawn places a copy of a prefab at a position under the scene root, taken from its pool when one is free."),
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bind.Params("prefab", "position"), bind.Example("b := scene.Spawn(Bullet, node.WorldPosition())"))
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bind.Func4(m, "SpawnAt", func(c *bind.Ctx, ref asset.Ref[asset.Prefab], parent scene.NodeHandle, pos mathx.Vec2, rot float32) scene.NodeHandle {
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s := spawner(c)
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if s == nil {
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return scene.NodeHandle{}
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}
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h, err := s.Spawn(ref.ID, parent, pos, rot)
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if err != nil {
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c.Fail(err.Error())
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}
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return h
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}, bind.Doc("SpawnAt places a copy of a prefab under parent with a local position and rotation."),
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bind.Params("prefab", "parent", "position", "rotation"), bind.Example("fx := scene.SpawnAt(Spark, node, Vec2{}, 0)"))
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bind.Proc1(m, "Despawn", func(c *bind.Ctx, h scene.NodeHandle) {
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if s := spawner(c); s != nil {
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s.Despawn(h)
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}
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}, bind.Doc("Despawn returns a spawned copy to its pool; it destroys a node that did not come from a pool."),
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bind.Params("node"), bind.Example("scene.Despawn(node)"))
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bind.Proc2(m, "Pool", func(c *bind.Ctx, ref asset.Ref[asset.Prefab], n int64) {
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if s := spawner(c); s != nil {
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if err := s.Pool(ref.ID, int(n)); err != nil {
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c.Fail(err.Error())
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}
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}
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}, bind.Doc("Pool makes n copies of a prefab ahead of time; their Ready runs now and Spawn takes them later."),
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bind.Params("prefab", "count"), bind.Example("scene.Pool(Bullet, 32)"))
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}
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