Fix issues found by staticcheck

common/basetilecreator.go

@@ -6,8 +6,8 @@ package common
 
 import (
 	"image/color"
-	"io/ioutil"
 	"log"
+	"os"
 	"path/filepath"
 	"strconv"
 )
@@ -177,7 +177,7 @@ func (btc *BaseTileCreator) WriteFunc(i, j int, update BaseTileUpdateFunc) func(
 	if update == nil && btc.renderer.IsEmpty() {
 		return func() (bool, error) {
 			//log.Printf("Writing empty (%d, %d) to file %s\n", x, z, path)
-			return true, ioutil.WriteFile(path, btc.blankImage(), 0666)
+			return true, os.WriteFile(path, btc.blankImage(), 0666)
 		}
 	}
 

common/image.go

@@ -131,6 +131,6 @@ func HashImage(img *image.RGBA) []byte {
 
 func BackgroundImage(width, height int, bg color.RGBA) *image.RGBA {
 	m := image.NewRGBA(image.Rect(0, 0, width, height))
-	draw.Draw(m, m.Bounds(), &image.Uniform{bg}, image.ZP, draw.Src)
+	draw.Draw(m, m.Bounds(), &image.Uniform{bg}, image.Point{}, draw.Src)
 	return m
 }

common/renderer.go

@@ -64,19 +64,16 @@ func (r *Renderer) GetPos() (int16, int16) {
 
 func (r *Renderer) initBuffers() {
 	yb := r.yBuffer
-	yb = yb[:len(yb)]
 	for i := range yb {
 		yb[i] = math.MinInt32
 	}
 
 	cb := r.cBuffer
-	cb = cb[:len(cb)]
 	for i := range cb {
 		cb[i] = -1
 	}
 
 	ym := r.yMin
-	ym = ym[:len(ym)]
 	for i := range ym {
 		ym[i] = math.MinInt32
 	}