From b5e225ccc5317fa1d486b8ae09b21d21b71826c8 Mon Sep 17 00:00:00 2001
From: erinn <erinn@openprivacy.ca>
Date: Fri, 9 Aug 2019 19:47:26 -0700
Subject: [PATCH] add -pxsize parameter to zoom in, try values 1,2,3,...

---
 graphics/graphics.go | 19 ++++++++++++-------
 main.go              |  3 ++-
 2 files changed, 14 insertions(+), 8 deletions(-)

diff --git a/graphics/graphics.go b/graphics/graphics.go
index 22c40aa..5a5e2c8 100644
--- a/graphics/graphics.go
+++ b/graphics/graphics.go
@@ -12,17 +12,18 @@ import (
 type Graphics struct {
 	window        *sdl.Window
 	renderer      *sdl.Renderer
-	width, height int32
+	width, height, pxsize int32
 	t             int
 	colorMap      map[string][4]uint8
 }
 
-func NewGraphics(width, height int32) *Graphics {
+func NewGraphics(width, height, pxsize int32) *Graphics {
 	graphics := new(Graphics)
 	graphics.width = width
 	graphics.height = height
+	graphics.pxsize = pxsize
 	window, err := sdl.CreateWindow("Microworlds", sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED,
-		width, height, sdl.WINDOW_SHOWN)
+		width * pxsize, height * pxsize, sdl.WINDOW_SHOWN)
 	if err != nil {
 		panic(err)
 	}
@@ -41,13 +42,17 @@ func NewGraphics(width, height int32) *Graphics {
 	return graphics
 }
 
+func (g *Graphics) DrawTileColor(x, y int32) {
+	g.renderer.FillRect(&sdl.Rect{X: x * g.pxsize, Y: y * g.pxsize, W: g.pxsize, H: g.pxsize})
+}
+
 func (g *Graphics) ColorPheromone(name string, color [4]uint8) {
 	g.colorMap[name] = color
 }
 
 func (g *Graphics) Render(env *core.Environment, turtles []*core.Turtle) {
 	g.renderer.SetDrawColor(0x00, 0x00, 0x00, 0x00)
-	g.renderer.FillRect(&sdl.Rect{X: 0, Y: 0, W: 600, H: 600})
+	g.renderer.FillRect(&sdl.Rect{X: 0, Y: 0, W: g.width * g.pxsize, H: g.width * g.pxsize})
 
 	for x := 0; x < int(g.width); x++ {
 		for y := 0; y < int(g.height); y++ {
@@ -58,13 +63,13 @@ func (g *Graphics) Render(env *core.Environment, turtles []*core.Turtle) {
 					// TODO explictly define this scale
 					scaledamount := uint8(float64(color[0])  * (amount/2))
 					g.renderer.SetDrawColor(scaledamount,0,scaledamount, uint8(0xF0))
-					g.renderer.DrawPoint(int32(x), int32(y))
+					g.DrawTileColor(int32(x), int32(y))
 				}
 			}
 
 			if env.HasValue(x, y) {
 				g.renderer.SetDrawColor(255, 255, 255, uint8(255))
-				g.renderer.DrawPoint(int32(x), int32(y))
+				g.DrawTileColor(int32(x), int32(y))
 			}
 		}
 	}
@@ -72,7 +77,7 @@ func (g *Graphics) Render(env *core.Environment, turtles []*core.Turtle) {
 	g.renderer.SetDrawColor(0xF3, 0x81, 0, 0x00)
 	for _, t := range turtles {
 		x, y := t.Pos()
-		g.renderer.DrawPoint(int32(x), int32(y))
+		g.DrawTileColor(int32(x), int32(y))
 		t.Run(env)
 	}
 
diff --git a/main.go b/main.go
index 014c6ce..6ffba56 100644
--- a/main.go
+++ b/main.go
@@ -20,6 +20,7 @@ var model = flag.String("model", "slime", "slimemold|swarm|woodchips")
 
 var width = flag.Int("width", 300, "width of environment")
 var height = flag.Int("height", 300, "height of environment")
+var pxsize = flag.Int("pxsize", 1, "pixels per tile edge")
 var numTurtles = flag.Int("numTurtles", 5000, "number of turtles")
 
 func main() {
@@ -44,7 +45,7 @@ func main() {
 
 	env := core.NewEnvironment(*width, *height)
 	turtles := make([]*core.Turtle, *numTurtles)
-	g := graphics.NewGraphics(int32(*width), int32(*height))
+	g := graphics.NewGraphics(int32(*width), int32(*height), int32(*pxsize))
 
 	switch *model {