119 lines
2.4 KiB
Go
119 lines
2.4 KiB
Go
package game
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import (
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"image/color"
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"time"
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"github.com/hajimehoshi/ebiten/v2"
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"github.com/atridad/BigFeelings/internal/hero"
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"github.com/atridad/BigFeelings/internal/status"
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"github.com/atridad/BigFeelings/internal/ui/hud"
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)
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const (
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ScreenWidth = 960
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ScreenHeight = 540
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TargetTPS = 60
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WindowTitle = "Big Feelings"
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)
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var (
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backgroundColor = color.NRGBA{R: 0, G: 0, B: 0, A: 255}
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)
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type controls struct {
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Left bool
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Right bool
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Up bool
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Down bool
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}
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func readControls() controls {
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return controls{
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Left: ebiten.IsKeyPressed(ebiten.KeyArrowLeft) || ebiten.IsKeyPressed(ebiten.KeyA),
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Right: ebiten.IsKeyPressed(ebiten.KeyArrowRight) || ebiten.IsKeyPressed(ebiten.KeyD),
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Up: ebiten.IsKeyPressed(ebiten.KeyArrowUp) || ebiten.IsKeyPressed(ebiten.KeyW),
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Down: ebiten.IsKeyPressed(ebiten.KeyArrowDown) || ebiten.IsKeyPressed(ebiten.KeyS),
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}
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}
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type Game struct {
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state *state
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}
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func New() *Game {
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return &Game{state: newState()}
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}
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func (g *Game) Update() error {
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g.state.update(readControls())
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return nil
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}
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func (g *Game) Draw(screen *ebiten.Image) {
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g.state.draw(screen)
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}
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func (g *Game) Layout(outsideWidth, outsideHeight int) (int, int) {
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return ScreenWidth, ScreenHeight
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}
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type state struct {
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hero *hero.Hero
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status *status.Manager
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hud hud.Overlay
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bounds hero.Bounds
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lastTick time.Time
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}
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func newState() *state {
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now := time.Now()
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return &state{
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hero: hero.New(hero.Config{
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StartX: ScreenWidth / 2,
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StartY: ScreenHeight / 2,
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Radius: 28,
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Speed: 180,
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Color: color.NRGBA{R: 210, G: 220, B: 255, A: 255},
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}),
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status: status.NewManager([]status.Config{
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{Label: "Core", Base: 60, Color: color.NRGBA{R: 255, G: 208, B: 0, A: 255}},
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{Label: "Drive", Base: 45, Color: color.NRGBA{R: 0, G: 190, B: 255, A: 255}},
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{Label: "Flux", Base: 30, Color: color.NRGBA{R: 255, G: 92, B: 120, A: 255}},
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}),
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hud: hud.Overlay{
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X: ScreenWidth - 220,
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Y: 20,
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Color: color.White,
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},
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bounds: hero.Bounds{
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Width: ScreenWidth,
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Height: ScreenHeight,
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},
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lastTick: now,
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}
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}
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func (s *state) update(input controls) {
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now := time.Now()
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dt := now.Sub(s.lastTick).Seconds()
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s.lastTick = now
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s.hero.Update(hero.Input{
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Left: input.Left,
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Right: input.Right,
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Up: input.Up,
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Down: input.Down,
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}, dt, s.bounds)
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s.status.Update()
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}
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func (s *state) draw(screen *ebiten.Image) {
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screen.Fill(backgroundColor)
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s.hero.Draw(screen)
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s.hud.Draw(screen, s.status.Meters())
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}
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