Metroidvania game
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1.6 KiB

package system
import (
"fmt"
_ "image/png"
"code.rocketnine.space/tslocum/gohan"
"code.rocketnine.space/tslocum/monovania/component"
"code.rocketnine.space/tslocum/monovania/engine"
"code.rocketnine.space/tslocum/monovania/world"
"github.com/hajimehoshi/ebiten/v2"
"github.com/hajimehoshi/ebiten/v2/ebitenutil"
)
type RenderDebugTextSystem struct {
player gohan.Entity
op *ebiten.DrawImageOptions
debugImg *ebiten.Image
}
func NewRenderDebugTextSystem(player gohan.Entity) *RenderDebugTextSystem {
s := &RenderDebugTextSystem{
player: player,
op: &ebiten.DrawImageOptions{},
debugImg: ebiten.NewImage(200, 200),
}
return s
}
func (s *RenderDebugTextSystem) Needs() []gohan.ComponentID {
return []gohan.ComponentID{
component.PositionComponentID,
component.VelocityComponentID,
component.WeaponComponentID,
}
}
func (s *RenderDebugTextSystem) Uses() []gohan.ComponentID {
return nil
}
func (s *RenderDebugTextSystem) Update(_ *gohan.Context) error {
return gohan.ErrSystemWithoutUpdate
}
func (s *RenderDebugTextSystem) Draw(ctx *gohan.Context, screen *ebiten.Image) error {
if world.World.Debug <= 0 {
return nil
}
position := component.Position(ctx)
velocity := component.Velocity(ctx)
s.debugImg.Clear()
s.op.GeoM.Reset()
s.op.GeoM.Scale(2, 2)
ebitenutil.DebugPrint(s.debugImg, fmt.Sprintf("POS %.0f,%.0f\nVEL %.2f,%.2f\nENT %d\nUPD %d\nDRA %d\nTPS %0.0f\nFPS %0.0f", position.X, position.Y, velocity.X, velocity.Y, engine.Engine.CurrentEntities(), engine.Engine.CurrentUpdates(), engine.Engine.CurrentDraws(), ebiten.CurrentTPS(), ebiten.CurrentFPS()))
screen.DrawImage(s.debugImg, s.op)
return nil
}