mirror of
https://github.com/stevenhowes/GoRetro.git
synced 2026-05-26 15:53:31 +01:00
stevenhowes
65 lines
1.6 KiB
Go
65 lines
1.6 KiB
Go
package GoRetro
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/*
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* --------------------
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* intervalShooter
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* --------------------
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* Fire projectiles at fixed intervals
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*/
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import (
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"time"
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"github.com/veandco/go-sdl2/sdl"
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)
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type intervalShooter struct {
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container *Element
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cooldown time.Duration // Time between shots
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lastShot time.Time // Last shot
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shootFunc func(renderer *sdl.Renderer, collisionLayer int) *Element
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}
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func NewIntervalShooter(container *Element, cooldown time.Duration, lastShot time.Time, NewBullet func(renderer *sdl.Renderer, collisionLayer int) *Element) *intervalShooter {
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return &intervalShooter{
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container: container,
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cooldown: cooldown,
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lastShot: lastShot,
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shootFunc: NewBullet}
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}
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func (shooter *intervalShooter) onDraw() error {
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return nil
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}
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func (shooter *intervalShooter) onUpdate() error {
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//pos := shooter.container.Position
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if time.Since(shooter.lastShot) >= shooter.cooldown {
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// TODO: These positions should not be hard coded. Store as offset from
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// container (i.e. gun positions)
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shooter.shoot(shooter.container.Position.X+15, shooter.container.Position.Y-10, shooter.container.Rotation, shooter.container)
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shooter.shoot(shooter.container.Position.X-15, shooter.container.Position.Y-10, shooter.container.Rotation, shooter.container)
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shooter.lastShot = time.Now()
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}
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return nil
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}
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func (shooter *intervalShooter) shoot(x, y, rotation float64, parent *Element) {
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bul := shooter.shootFunc(parent.Renderer, parent.CollisionLayer+1)
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bul.Active = true
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bul.Position.X = x
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bul.Position.Y = y
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bul.Rotation = rotation
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bul.parentElement = parent
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}
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func (shooter *intervalShooter) onCollision(other *Element) error {
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return nil
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}
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