Simplified instruction pointer delta handling

pkg/pointer/delta.go

@@ -1,10 +0,0 @@
-package pointer
-
-type Delta struct {
-	x int
-	y int
-}
-
-func NewDelta(x, y int) *Delta {
-	return &Delta{x: x, y: y}
-}

pkg/pointer/pointer.go

@@ -3,16 +3,19 @@ package pointer
 import "git.adyxax.org/adyxax/gofunge/pkg/field"
 
 type Pointer struct {
-	x     int
-	y     int
-	delta *Delta
+	// the position
+	x int
+	y int
+	// The delta
+	dx int
+	dy int
 	// The Storage offset
 	sox int
 	soy int
 }
 
 func NewPointer() *Pointer {
-	return &Pointer{delta: NewDelta(1, 0)}
+	return &Pointer{dx: 1}
 }
 
 func (p Pointer) Split() *Pointer {
@@ -20,5 +23,5 @@ func (p Pointer) Split() *Pointer {
 }
 
 func (p *Pointer) Step(f field.Field) {
-	p.x, p.y = f.Step(p.x, p.y, p.delta.x, p.delta.y)
+	p.x, p.y = f.Step(p.x, p.y, p.dx, p.dy)
 }

pkg/pointer/pointer_test.go

@@ -9,7 +9,7 @@ import (
 )
 
 func TestNewPointer(t *testing.T) {
-	require.Equal(t, NewPointer(), &Pointer{delta: &Delta{1, 0}})
+	require.Equal(t, NewPointer(), &Pointer{dx: 1})
 }
 
 func TestSplit(t *testing.T) {
@@ -23,8 +23,8 @@ func TestSplit(t *testing.T) {
 	// We check that p2 is a real copy
 	p.Step(*f)
 	p2.Step(*f)
-	require.Equal(t, p, &Pointer{x: 1, y: 0, delta: &Delta{1, 0}})
-	require.Equal(t, p2, &Pointer{x: 1, y: 0, delta: &Delta{1, 0}})
+	require.Equal(t, p, &Pointer{x: 1, y: 0, dx: 1})
+	require.Equal(t, p2, &Pointer{x: 1, y: 0, dx: 1})
 }
 
 func TestStep(t *testing.T) { // Step is thoroughly tested in the field package

pkg/pointer/storage-offset.go

@@ -5,7 +5,7 @@ func (p Pointer) GetStorageOffset() (x, y int) {
 }
 
 func (p *Pointer) CalculateNewStorageOffset() {
-	p.sox, p.soy = p.x+p.delta.x, p.y+p.delta.y
+	p.sox, p.soy = p.x+p.dx, p.y+p.dy
 }
 
 func (p *Pointer) SetStorageOffset(x, y int) {