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mirror of https://github.com/OpenDiablo2/OpenDiablo2 synced 2024-11-02 17:27:23 -04:00
OpenDiablo2/d2common/d2util/debug_print.go
gravestench 783993470e
Lint error cleanup1 (#779)
* fixed lint error in d2app/app.go

* go fmt entire project

* adding doc.go for d2records

* fixed lint issues in d2core/d2map

* fixed lint error in d2interface/palette.go

* fixed lint error in  d2core/d2hero/hero_state_factory.go

* adding dov.go to d2common/d2geom

* fixing lint errors in d2common/d2loader

* adding doc.go to d2common/d2cache

* adding doc files for d2datautils, d2util, d2path

* adding package doc strings for mapgen, in-geam help screen, and tcp client connection

* removed all cuddling lint errors

* changed stamina equality check to '<=' instead of '<'
2020-10-22 01:12:06 -04:00

103 lines
2.3 KiB
Go

package d2util
import (
"image"
"log"
"github.com/OpenDiablo2/OpenDiablo2/d2common/d2util/assets"
"github.com/hajimehoshi/ebiten"
)
const (
cw = assets.CharWidth
ch = assets.CharHeight
)
// DebugPrinter is the global debug printer
var DebugPrinter = NewDebugPrinter() //nolint:gochecknoglobals // currently global by design
// NewDebugPrinter creates a new debug printer
func NewDebugPrinter() *GlyphPrinter {
img, err := ebiten.NewImageFromImage(assets.CreateTextImage(), ebiten.FilterDefault)
if err != nil {
return nil
}
printer := &GlyphPrinter{
glyphImageTable: img,
glyphs: make(map[rune]*ebiten.Image),
}
return printer
}
// GlyphPrinter uses an image containing glyphs to draw text onto ebiten images
type GlyphPrinter struct {
glyphImageTable *ebiten.Image
glyphs map[rune]*ebiten.Image
}
// Print draws the string str on the image on left top corner.
//
// The available runes are in U+0000 to U+00FF, which is C0 Controls and
// Basic Latin and C1 Controls and Latin-1 Supplement.
//
// DebugPrint always returns nil as of 1.5.0-alpha.
func (p *GlyphPrinter) Print(target *ebiten.Image, str string) error {
p.PrintAt(target, str, 0, 0)
return nil
}
// PrintAt draws the string str on the image at (x, y) position.
// The available runes are in U+0000 to U+00FF, which is C0 Controls and
// Basic Latin and C1 Controls and Latin-1 Supplement.
func (p *GlyphPrinter) PrintAt(target *ebiten.Image, str string, x, y int) {
p.drawDebugText(target, str, x, y, false)
}
func (p *GlyphPrinter) drawDebugText(target *ebiten.Image, str string, ox, oy int, shadow bool) {
op := &ebiten.DrawImageOptions{}
if shadow {
op.ColorM.Scale(0, 0, 0, 0.5)
}
x := 0
y := 0
w, _ := p.glyphImageTable.Size()
for _, c := range str {
if c == '\n' {
x = 0
y += ch
continue
}
s, ok := p.glyphs[c]
if !ok {
n := w / cw
sx := (int(c) % n) * cw
sy := (int(c) / n) * ch
rect := image.Rect(sx, sy, sx+cw, sy+ch)
s = p.glyphImageTable.SubImage(rect).(*ebiten.Image)
p.glyphs[c] = s
}
op.GeoM.Reset()
op.GeoM.Translate(float64(x), float64(y))
op.GeoM.Translate(float64(ox+1), float64(oy))
op.CompositeMode = ebiten.CompositeModeLighter
err := target.DrawImage(s, op)
if err != nil {
log.Print(err)
}
x += cw
}
}