show all map layers at once

editor/mapedit.fnl

@@ -14,9 +14,9 @@
 
 (fn platform [?key] (let [p (dimensions)] (if ?key (. p ?key) p)))
 (fn MapEditView.layer-type [self ?ilayer] (or (?. (platform :layers) (or ?ilayer self.ilayer)) :tiles))
-(fn MapEditView.dimensions [self ?ilayer] (or (platform (self:layer-type)) (platform)))
+(fn MapEditView.dimensions [self ?ilayer] (or (platform (self:layer-type ?ilayer)) (platform)))
 (fn MapEditView.scaled-dimensions [self ?ilayer]
-  (let [dim (lume.clone (self:dimensions))]
+  (let [dim (lume.clone (self:dimensions ?ilayer))]
     (each [_ key (ipairs [:tilew :tileh :xstagger :ystagger])]
       (when (. dim key) (tset dim key (* sprite-scale (. dim key)))))
     dim))
@@ -26,7 +26,7 @@
 (fn MapEditView.tilew [self ?ilayer] (. (self:scaled-dimensions ?ilayer) :tilew))
 (fn MapEditView.tileh [self ?ilayer] (. (self:scaled-dimensions ?ilayer) :tileh))
 
-(fn MapEditView.empty-map [self] (string.rep "\0" (* (self:mapw) (self:maph))))
+(fn MapEditView.empty-map [self ?ilayer] (string.rep "\0" (* (self:mapw ?ilayer) (self:maph ?ilayer))))
 
 (fn MapEditView.new [self]
   (MapEditView.super.new self)
@@ -37,8 +37,8 @@
   (self:reload))
 
 ; map is stored bottom-to-top
-(fn MapEditView.imap-from-xy [self mx my]
+(fn MapEditView.imap-from-xy [self mx my ?ilayer]
-  (+ mx -1 (* (self:mapw) (- (self:maph) my))))
+  (+ mx -1 (* (self:mapw ?ilayer) (- (self:maph ?ilayer) my))))
 
 (fn MapEditView.update-map [self map mx my itile]
   (local imap (self:imap-from-xy mx my))
@@ -48,13 +48,13 @@
     (string.char enctile)
     (map:sub (+ imap 2))))
 
-(fn MapEditView.map [self]
+(fn MapEditView.map [self ?ilayer]
-  (if (platform :layers) (or (?. self.level.layers self.ilayer) (self:empty-map))
+  (if (platform :layers) (or (?. self.level.layers (or ?ilayer self.ilayer)) (self:empty-map ?ilayer))
     self.level.map))
 
-(fn MapEditView.itile-from-xy [self mx my]
+(fn MapEditView.itile-from-xy [self mx my ?ilayer]
-  (local imap (+ (self:imap-from-xy mx my) 1))
+  (local imap (+ (self:imap-from-xy mx my ?ilayer) 1))
-  (local enctile (string.byte (string.sub (self:map) imap imap)))
+  (local enctile (or (string.byte (string.sub (self:map ?ilayer) imap imap)) 0))
   (decode-itile enctile))
 
 (fn MapEditView.set-tile [self mx my itile]
@@ -62,6 +62,7 @@
     (if (platform :layers) (util.nested-tset self.level [:layers self.ilayer] updated-map)
       (set self.level.map updated-map))))
 
+; todo: objects exist on layers
 (fn MapEditView.iobject-from-xy [self mx my ?iobj]
   (local iobj (or ?iobj 1))
   (local obj (. self.level.objects iobj))
@@ -131,10 +132,10 @@
 (fn MapEditView.draw-tilestrip [self x y my ?ilayer]
   ; stripcache leaks but honestly who cares
   (local tilestrip [])
-  (var stripid "")
+  (var stripid (tostring ?ilayer))
-  (for [mx 1 (self:mapw)]
+  (for [mx 1 (self:mapw ?ilayer)]
-    (local itile (self:itile-from-xy mx my))
+    (local itile (self:itile-from-xy mx my ?ilayer))
-    (local tile (?. self.tilecache.tiles itile :gfx))
+    (local tile (?. (files.cache (self:layer-type ?ilayer)) :tiles itile :gfx))
     (table.insert tilestrip tile)
     (set stripid (.. stripid  (string.char itile))))
   (var sprite (. self.stripcache stripid))
@@ -161,8 +162,8 @@
     (love.graphics.rectangle :line x y w h)
     (love.graphics.setColor 1 1 1)))
 
-(fn MapEditView.handle-mouseedits-object [self mx my x y w h]
+(fn MapEditView.handle-mouseedits-object [self mx my x y w h ilayer]
-  (when (and (active? self :map) (mouse-inside x y w h))
+  (when (and (active? self [:map ilayer]) (mouse-inside x y w h))
     (let [iobject (self:iobject-from-xy mx my)]
       (match self.imstate.left
         :down (when (= self.iobject-linking nil) (set self.iobject-linking iobject))
@@ -178,13 +179,13 @@
                   (set self.playerpos nil))
 
               (= iobject nil)
-              (let [tile (self.tilecache:tile (self:itile-from-xy mx my))]
+              (let [tile (self.tilecache:tile (self:itile-from-xy mx my ilayer))]
                 (table.insert self.level.objects {:x mx :y my :func (or tile.word "")})
                 (set self.iobject (length self.level.objects))))
             (set self.iobject-linking nil))))))
 
-(fn MapEditView.handle-mouseedits-tile [self mx my x y w h]
+(fn MapEditView.handle-mouseedits-tile [self mx my x y w h ilayer]
-  (when (and (active? self :map) (mouse-inside x y w h) (not= (self:itile-from-xy mx my) self.itile))
+  (when (and (active? self [:map ilayer]) (mouse-inside x y w h) (not= (self:itile-from-xy mx my ilayer) self.itile))
     (self:set-tile mx my self.itile)))
 
 (fn MapEditView.draw-tile-xy-label [self mx my x y h ystagger]
@@ -192,18 +193,19 @@
   (renderer.draw_text style.font (string.format "%x" (encode-yx {:x mx :y my})) (+ x 20) labely style.text)
   (love.graphics.setColor 1 1 1))
 
-(fn MapEditView.draw-map-editor [self {: x : y &as form} ilayer]
+(fn MapEditView.draw-map-layer [self {: x : y &as form} ilayer live]
   (love.graphics.setColor 1 1 1 1)
   (local {: mapw : maph : tilew : tileh : xstagger : ystagger} (self:scaled-dimensions ilayer))
   (local intileh (or ystagger tileh))
-  (let [[w h] (self:mapsize ilayer)] (lume.extend form {: w : h :tag :map}))
+  (let [[w h] (self:mapsize ilayer)] (lume.extend form {: w : h :tag [:map ilayer]}))
-  (activate form)
+  (when live (activate form))
   (var iobject-over nil)
   (for [my 1 maph]
     (local tiley (+ y (* (- my 1) (or ystagger tileh))))
     (local intiley (+ tiley (- tileh intileh)))
     (local xoff (if (and xstagger (= (% my 2) 0)) xstagger 0))
     (self:draw-tilestrip (+ x xoff) tiley my ilayer)
+    (when live
       (for [mx 1 mapw]
         (local tilex (+ x (* (- mx 1) tilew) xoff))
         (local iobject (self:iobject-from-xy mx my))
@@ -211,12 +213,19 @@
           (self:draw-player mx my tilex intiley)
           (self:draw-object-box iobject tilex intiley tilew intileh))
         (if self.itile
-        (self:handle-mouseedits-tile mx my tilex intiley tilew intileh)
+          (self:handle-mouseedits-tile mx my tilex intiley tilew intileh ilayer)
-        (self:handle-mouseedits-object mx my tilex intiley tilew intileh))
+          (self:handle-mouseedits-object mx my tilex intiley tilew intileh ilayer))
         (when (mouse-inside tilex intiley tilew intileh)
           (when (not= iobject nil) (set iobject-over iobject))
-        (self:draw-tile-xy-label mx my tilex intiley tileh ystagger))))
+          (self:draw-tile-xy-label mx my tilex intiley tileh ystagger)))))
-  (when (= self.itile nil) (self:draw-link-lines form iobject-over)))
+  (when (and live (= self.itile nil))
+    (self:draw-link-lines form iobject-over)))
+
+(fn MapEditView.draw-map-editor [self form]
+  (let [g (group-wrapper form)]
+    (each [ilayer (ipairs (platform :layers))]
+      (self:draw-map-layer (g) ilayer (= ilayer self.ilayer)))
+    (g)))
 
 (fn condition-label [flag]
   (if flag {:label flag : flag} {:label "<always>"}))