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package main
import (
"fmt"
"image/color"
"age_of_empires/ecs"
"age_of_empires/physics"
"age_of_empires/selection"
"github.com/hajimehoshi/ebiten/v2"
"github.com/hajimehoshi/ebiten/v2/text/v2"
"github.com/hajimehoshi/ebiten/v2/vector"
)
func (g *Game) Draw(screen *ebiten.Image) {
x, y := ebiten.CursorPosition()
cursor := physics.Point{X: x, Y: y}
screen.Fill(soilColor)
required := ecs.CM_Image | ecs.CM_Position
for i, mask := range g.Mask {
if mask&required == required {
position := g.Position[i]
image := g.Image[i]
op := &ebiten.DrawImageOptions{}
op.GeoM.Translate(float64(position.X), float64(position.Y))
screen.DrawImage(image, op)
if mask&ecs.CM_Selection == ecs.CM_Selection {
selectable := g.Selection[i]
if selectable.IsSelected {
opt := &ebiten.DrawImageOptions{}
opt.GeoM.Translate(float64(position.X-selection.HaloWidth/2), float64(position.Y-selection.HaloWidth/2))
screen.DrawImage(selectable.Halo, opt)
if mask&ecs.CM_ResourceSource == ecs.CM_ResourceSource {
source := g.ResourceSource[i]
resourceText := fmt.Sprintf("%d", source.Remaining)
op := &text.DrawOptions{}
op.GeoM.Translate(float64(position.X+5), float64(position.Y+30))
op.ColorScale.ScaleWithColor(color.White)
text.Draw(screen, resourceText, &text.GoTextFace{
Source: g.FaceSource,
Size: 40,
}, op)
}
if mask&ecs.CM_Spawn == ecs.CM_Spawn {
spawn := g.Spawn[i]
spawnText := fmt.Sprintf("%d", len(spawn.Requests))
op := &text.DrawOptions{}
op.GeoM.Translate(float64(position.X+5), float64(position.Y+70))
op.ColorScale.ScaleWithColor(color.White)
text.Draw(screen, spawnText, &text.GoTextFace{
Source: g.FaceSource,
Size: 40,
}, op)
if spawn.SpawnTarget.Ok {
spawnTarget := spawn.SpawnTarget.Value
vector.DrawFilledCircle(screen, float32(spawnTarget.X+50), float32(spawnTarget.Y+50), 30, Red, true)
}
}
if mask&ecs.CM_Move == ecs.CM_Move {
move := g.Move[i]
dx := +image.Bounds().Dx() / 2
dy := +image.Bounds().Dy() / 2
last := position
for _, point := range move.Path {
vector.StrokeLine(screen, float32(last.X+dx), float32(last.Y+dy), float32(point.X+dx), float32(point.Y+dy), 10.0, color.RGBA{256 * 3 / 16, 256 * 3 / 16, 256 * 3 / 16, 256 / 4}, true)
last = point
}
}
}
}
}
}
if g.GlobalSelection.IsActive(cursor) {
g.GlobalSelection.Draw(screen, cursor)
}
drawTopBanner(screen, g)
if len(g.GlobalSelection.Selected) > 0 {
drawBottomBanner(screen, g)
}
}
func drawTopBanner(screen *ebiten.Image, g *Game) {
screenBounds := screen.Bounds()
bannerHeight := float32(200)
vector.DrawFilledRect(screen, 0, 0, float32(screenBounds.Dx()), bannerHeight, color.White, true)
resourceText := fmt.Sprintf("Resources: %d", g.ResourceAmount)
op := &text.DrawOptions{}
op.GeoM.Translate(25, 25)
op.ColorScale.ScaleWithColor(color.Black)
text.Draw(screen, resourceText, &text.GoTextFace{
Source: g.FaceSource,
Size: 100,
}, op)
}
func drawBottomBanner(screen *ebiten.Image, g *Game) {
screenBounds := screen.Bounds()
bannerHeight := float32(200)
bannerTop := screenBounds.Dy() - int(bannerHeight)
vector.DrawFilledRect(screen, 0, float32(bannerTop), float32(screenBounds.Dx()), bannerHeight, color.White, true)
selectedText := "Selection"
op := &text.DrawOptions{}
op.GeoM.Translate(25, float64(float32(bannerTop)+25))
op.ColorScale.ScaleWithColor(color.Black)
text.Draw(screen, selectedText, &text.GoTextFace{
Source: g.FaceSource,
Size: 100,
}, op)
}
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