more code cleanup

field.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"fmt"
+	sg "github.com/d2fn/sumi/internal/graphics"
 	rl "github.com/gen2brain/raylib-go/raylib"
 	"github.com/ojrac/opensimplex-go"
 	"math"
@@ -105,11 +106,13 @@ func (fl *FieldLayer) Update(env *Env) {
 
 }
 
-func (fl *FieldLayer) Draw(env *Env) {
-	rl.ClearBackground(rl.Blank)
-	rl.BeginBlendMode(rl.BlendAlphaPremultiply)
-	for x := range int32(env.GetGraphicsHeight()) {
-		for y := range int32(env.GetGraphicsHeight()) {
+func (fl *FieldLayer) Draw(env *Env, g *sg.Graphics) {
+	g.Clear()
+	g.BeginAdditiveBlend()
+	//rl.ClearBackground(rl.Blank)
+	//rl.BeginBlendMode(rl.BlendAlphaPremultiply)
+	for x := range g.WidthInt32() {
+		for y := range g.HeightInt32() {
 			v := fl.field.Get(float32(x), float32(y))
 			clr := LerpCurve(v, 1.3, fl.loColor, fl.hiColor)
 			rl.DrawPixel(x, y, clr)