Remove ScreenshotKey Event, Add F* Key Handlers

* The F3 key now toggles the Debug Overlay, which is now OFF by default.
* The F4 key now toggles the Debug Collision Boxes feature.

README.md

@@ -40,8 +40,14 @@ Escape
   Exit the program otherwise.
 
 Enter
-  Open and close the developer console, and run commands while the console
-  is open.
+  Open and close the developer console, and run commands while the
+  console is open.
+
+F3
+  Toggle the Debug Overlay.
+
+F4
+  Toggle debug collision hitboxes.
 ```
 
 In Play Mode:
@@ -51,13 +57,6 @@ Cursor Keys
   Move the player around.
 ```
 
-In Edit Mode:
-
-```
-F12
-  Take a screenshot (generate a PNG based on level data)
-```
-
 ## Developer Console
 
 Press `Enter` at any time to open the developer console.
@@ -68,14 +67,14 @@ Commands supported:
 new
   Create a new map in Edit Mode.
 
-save [filename.json]
+save [filename]
   Save the current map in Edit Mode. The filename is required if the map has
   not been saved yet.
 
-edit [filename.json]
-  Open a map in Edit Mode.
+edit [filename]
+  Open a map or doodad in Edit Mode.
 
-play [filename.json]
+play [filename]
   Open a map in Play Mode.
 
 echo <text>

lib/events/events.go

@@ -11,8 +11,6 @@ type State struct {
 	Button1 *BoolTick
 	Button2 *BoolTick
 
-	// Screenshot key.
-	ScreenshotKey *BoolTick
 	EscapeKey   *BoolTick
 	EnterKey    *BoolTick
 	ShiftActive *BoolTick
@@ -35,7 +33,6 @@ func New() *State {
 	return &State{
 		Button1:     &BoolTick{},
 		Button2:     &BoolTick{},
-		ScreenshotKey: &BoolTick{},
 		EscapeKey:   &BoolTick{},
 		EnterKey:    &BoolTick{},
 		ShiftActive: &BoolTick{},

lib/render/sdl/events.go

@@ -19,6 +19,14 @@ var (
 // Poll for events.
 func (r *Renderer) Poll() (*events.State, error) {
 	s := r.events
+
+	// helper function to push keyboard key names on keyDown events only.
+	pushKey := func(name string, state uint8) {
+		if state == 1 {
+			s.KeyName.Push(name)
+		}
+	}
+
 	for event := sdl.PollEvent(); event != nil; event = sdl.PollEvent() {
 		switch t := event.(type) {
 		case *sdl.QuitEvent:
@@ -103,8 +111,30 @@ func (r *Renderer) Poll() (*events.State, error) {
 					continue
 				}
 				s.EnterKey.Push(t.State == 1)
+			case sdl.SCANCODE_F1:
+				pushKey("F1", t.State)
+			case sdl.SCANCODE_F2:
+				pushKey("F2", t.State)
+			case sdl.SCANCODE_F3:
+				pushKey("F3", t.State)
+			case sdl.SCANCODE_F4:
+				pushKey("F4", t.State)
+			case sdl.SCANCODE_F5:
+				pushKey("F5", t.State)
+			case sdl.SCANCODE_F6:
+				pushKey("F6", t.State)
+			case sdl.SCANCODE_F7:
+				pushKey("F7", t.State)
+			case sdl.SCANCODE_F8:
+				pushKey("F8", t.State)
+			case sdl.SCANCODE_F9:
+				pushKey("F9", t.State)
+			case sdl.SCANCODE_F10:
+				pushKey("F10", t.State)
+			case sdl.SCANCODE_F11:
+				pushKey("F11", t.State)
 			case sdl.SCANCODE_F12:
-				s.ScreenshotKey.Push(t.State == 1)
+				pushKey("F12", t.State)
 			case sdl.SCANCODE_UP:
 				s.Up.Push(t.State == 1)
 			case sdl.SCANCODE_LEFT:

pkg/doodle.go

@@ -118,6 +118,14 @@ func (d *Doodle) Run() error {
 				break
 			}
 
+			if ev.KeyName.Now == "F3" {
+				DebugOverlay = !DebugOverlay
+				ev.KeyName.Read()
+			} else if ev.KeyName.Now == "F4" {
+				DebugCollision = !DebugCollision
+				ev.KeyName.Read()
+			}
+
 			// Run the scene's logic.
 			err = d.Scene.Loop(d, ev)
 			if err != nil {

pkg/fps.go

@@ -17,7 +17,7 @@ const maxSamples = 100
 // Debug mode options, these can be enabled in the dev console
 // like: boolProp DebugOverlay true
 var (
-	DebugOverlay   = true
+	DebugOverlay   = false
 	DebugCollision = false
 
 	DebugTextPadding int32 = 8

pkg/level/chunker.go

@@ -6,7 +6,6 @@ import (
 	"math"
 
 	"git.kirsle.net/apps/doodle/lib/render"
-	"git.kirsle.net/apps/doodle/pkg/log"
 )
 
 // Chunker is the data structure that manages the chunks of a level, and
@@ -30,7 +29,6 @@ func NewChunker(size int) *Chunker {
 // on disk) to connect references to the swatches in the palette.
 func (c *Chunker) Inflate(pal *Palette) error {
 	for coord, chunk := range c.Chunks {
-		log.Debug("Chunker.Inflate: expanding chunk %s", coord)
 		chunk.Point = coord
 		chunk.Size = c.Size
 		chunk.Inflate(pal)

pkg/uix/canvas.go

@@ -169,9 +169,7 @@ func (w *Canvas) Loop(ev *events.State) error {
 	if err := w.loopFollowActor(ev); err != nil {
 		log.Error("Follow actor: %s", err) // not fatal but nice to know
 	}
-	if err := w.loopConstrainScroll(); err != nil {
-		log.Debug("loopConstrainScroll: %s", err)
-	}
+	_ = w.loopConstrainScroll()
 
 	// Remove any actors that were destroyed the previous tick.
 	var newActors []*Actor