131 lines
2.2 KiB
Go
131 lines
2.2 KiB
Go
package main
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import "time"
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import "image"
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import "git.tebibyte.media/sashakoshka/tomo"
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import "git.tebibyte.media/sashakoshka/tomo/canvas"
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type Game struct {
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*Raycaster
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running bool
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tickChan <- chan time.Time
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stopChan chan bool
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stamina float64
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health float64
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controlState ControlState
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onStatUpdate func ()
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}
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func NewGame (world World, textures Textures) (game *Game) {
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game = &Game {
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Raycaster: NewRaycaster(world, textures),
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stopChan: make(chan bool),
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}
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game.Raycaster.OnControlStateChange (func (state ControlState) {
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game.controlState = state
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})
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game.stamina = 0.5
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game.health = 1
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return
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}
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func (game *Game) DrawTo (
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canvas canvas.Canvas,
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bounds image.Rectangle,
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onDamage func (image.Rectangle),
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) {
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if canvas == nil {
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select {
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case game.stopChan <- true:
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default:
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}
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} else if !game.running {
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game.running = true
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go game.run()
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}
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game.Raycaster.DrawTo(canvas, bounds, onDamage)
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}
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func (game *Game) Stamina () float64 {
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return game.stamina
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}
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func (game *Game) Health () float64 {
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return game.health
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}
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func (game *Game) OnStatUpdate (callback func ()) {
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game.onStatUpdate = callback
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}
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func (game *Game) tick () {
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moved := false
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statUpdate := false
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speed := 0.07
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if game.controlState.Sprint {
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speed = 0.16
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}
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if game.stamina <= 0 {
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speed = 0
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}
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if game.controlState.WalkForward {
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game.Walk(speed)
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moved = true
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}
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if game.controlState.WalkBackward {
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game.Walk(-speed)
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moved = true
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}
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if game.controlState.StrafeLeft {
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game.Strafe(-speed)
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moved = true
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}
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if game.controlState.StrafeRight {
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game.Strafe(speed)
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moved = true
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}
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if game.controlState.LookLeft {
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game.Rotate(-0.1)
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}
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if game.controlState.LookRight {
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game.Rotate(0.1)
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}
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if moved {
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game.stamina -= speed / 50
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statUpdate = true
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} else if game.stamina < 1 {
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game.stamina += 0.005
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statUpdate = true
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}
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if game.stamina > 1 {
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game.stamina = 1
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}
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if game.stamina < 0 {
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game.stamina = 0
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}
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tomo.Do(game.Draw)
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if statUpdate && game.onStatUpdate != nil {
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tomo.Do(game.onStatUpdate)
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}
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}
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func (game *Game) run () {
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ticker := time.NewTicker(time.Second / 30)
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game.tickChan = ticker.C
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for game.running {
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select {
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case <- game.tickChan:
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game.tick()
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case <- game.stopChan:
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ticker.Stop()
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}
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}
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}
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