clj: fix palette selection and delete tile and better init-game

src/game.clj

@@ -46,12 +46,47 @@
       (aset (+ i 1) (int tr))
       (aset (+ i 2) (int tc)))))
 
+(defn delete-tile! [game layer cr cc]
+  (let [i (idx cr cc)]
+    (doto ^ints (e/cells (get (:layers game) layer))
+      (aset i -1)
+      (aset (+ i 1) -1)
+      (aset (+ i 2) -1)))
+  #_(do-neighbors! layer at-row at-col
+                 (fn [l r c]
+                   (when-let [tile (tile-at game l r c)]
+                     (when (contains? (:tags tile) :randomized)
+                       (set-random-tile! game l r c))))))
+
 (defn cell-at-mouse-pos [game]
   (let [{mx :x my :y} (rl/get-mouse-position)
         row (quot my (* cell-size scale))
         col (quot mx (* cell-size scale))]
     [row col]))
 
+(defn compute-tileset-rects [tiles]
+  (mapv (fn [[r c]]
+          (let [padding 10
+                curr-size (* cell-size scale)
+                pos-x (+ (* padding (inc c)) (* c curr-size))
+                pos-y (+ (* padding (inc r)) (* r curr-size))]
+            {:x pos-x :y pos-y :width curr-size :height curr-size}))
+        tiles))
+
+(defn load-tileset [path]
+  (let [tileset (edn/read-string (slurp path))
+        ;; TODO: We should include the WxH in the end file
+        texture (e/load-texture-once :level-props (:texture-path tileset))
+        tiles (:selected-cells tileset)]
+    {:id :level-props
+     :texture texture
+     ;; TODO: This is going to change soon because it needs to be a rect for multi-tile sprites
+     :tiles tiles
+     :src-rects (mapv (fn [[r c]] {:x (* c cell-size) :y (* r cell-size) :width cell-size :height cell-size})
+                      tiles)
+     ;; TODO: Maybe  we have a separate place for this?
+     :dst-rects (compute-tileset-rects tiles)}))
+
 (defn init-game [config]
   (let [tileset-path "./source-assets/Sprout Lands Premium/Tilesets/ground tiles/New tiles/"]
     {:editor-mode false
@@ -60,11 +95,10 @@
      :current-layer 0
      :current-tilemap 0
      :selected-tile [-1 -1 -1]
-     :atlases
+     :hovered-tile nil
+     :tilesets
      ;; (edn/read-string (slurp "./assets/Mushrooms, Flowers, Stones.edn"))
-     (let [path "./assets/Mushrooms, Flowers, Stones.edn"
+     [(load-tileset "./assets/Mushrooms, Flowers, Stones.edn")]
-           atlas (edn/read-string (slurp path))]
-       [[:level-props (e/load-texture-once :level-props (:texture-path atlas)) (:selected-cells atlas)]])
      ;; TODO: When we cannot find the image, no errors are being reported. Likely because raylib is failing silently
      ;; TODO: How do we get Raylib to reload images on the fly
      :tilemaps
@@ -192,16 +226,6 @@
                    (when (tile-at game l r c)
                      (set-random-tile! game l r c)))))
 
-(defn delete-tile! [game layer at-row at-col]
-  (set-tile! game layer at-row at-col nil)
-  (do-neighbors! layer at-row at-col
-                 (fn [l r c]
-                   (when-let [tile (tile-at game l r c)]
-                     (when (contains? (:tags tile) :randomized)
-                       (set-random-tile! game l r c))))))
-
-                     ;; (when (contains? (:tags tile) :randomized)
-
 (defn handle-game-input [config game]
   (update-as-> [g game]
     (assoc g :event-queue [])
@@ -224,6 +248,10 @@
     (when (rl/key-pressed? rl/key-space)
       (update g :editor-mode not))
 
+    (when (rl/key-pressed? rl/key-e)
+      (doseq [i (conj (range 10) :asdf)]
+        (+ 1 i))
+      g)
     #_(when (and (:editor-mode game)
                  (rl/mouse-button-pressed? rl/mouse-button-left))
         (let [{mx :x my :y} (rl/get-mouse-position)]
@@ -267,7 +295,23 @@
         #_(when (and (= mode :draw)
                      (not= (cell-at-mouse-pos game) (:last-filled-cell game)))
             (auto-tile! game (:current-layer game) row col)
-          (assoc game :last-filled-cell [row col]))))))
+            (assoc game :last-filled-cell [row col]))))
+    ;; Find a hovered or selected tile
+    (when (:editor-mode game)
+      (let [tileset (first (:tilesets game))
+            mouse-pos (rl/get-mouse-position)
+            {:keys [width height seg]} (:texture tileset)]
+        (reduce-kv (fn [g idx rect]
+                     (if (not (rl/collision-point-rec? mouse-pos rect))
+                       g
+                       (if (rl/mouse-button-pressed? rl/mouse-button-left)
+                         (let [src-rect (get (:src-rects tileset) idx)]
+                           (reduced (-> g
+                                        (assoc :selected-tile [0 (quot (:y src-rect) cell-size) (quot (:x src-rect) cell-size)])
+                                        (dissoc :editor-mode :hovered-tile))))
+                         (assoc g :hovered-tile rect))))
+                   g
+                   (:dst-rects (first (:tilesets game))))))))
 
 (defn draw-tile! [game tilemap row col x y scale]
   (let [src-rect (rl/rect-seg (* col cell-size) (* row cell-size) cell-size cell-size)
@@ -282,15 +326,15 @@
     (do-grid [cr rows cc cols]
       (let [[aid tr tc] (tile-at game layer cr cc)]
         (when (and (not= aid -1)
-                   (get (:atlases game) aid))
+                   (get (:tilesets game) aid))
-          (draw-tile! game (second (get (:atlases game) aid)) tr tc (* cc cell-size scale) (* cr cell-size scale) scale)))))
+          (draw-tile! game (:texture (get (:tilesets game) aid)) tr tc (* cc cell-size scale) (* cr cell-size scale) scale)))))
-  #_(when (and (not= (first (:selected-tile game)) -1)
+  (when (and (not= (first (:selected-tile game)) -1)
              (not (contains? game :draw-drag))
              (not (:editor-mode game)))
     (let [{mx :x my :y :as mouse-pos} (rl/get-mouse-position)
           [aid tr tc] (:selected-tile game)]
       ;; TODO: Maybe better if we create a get-tilemap-by-name
-      (draw-tile! game (second (get (:atlases game) aid)) tr tc mx my scale)))
+      (draw-tile! game (:texture (get (:tilesets game) aid)) tr tc mx my scale)))
   #_(rl/draw-texture-pro!* (:seg (:bush (:tilemaps game)))
                            (rl/rect-seg 0 0 54 35)
                            (rl/rect-seg 600 180 (* 54 2) (* 35 2))
@@ -298,29 +342,16 @@
   (when (:editor-mode game)
     (rl/draw-rectangle-lines-ex!* (rl/rect-seg 0 0 screen-width screen-height) 5.0 rl/green)
     (rl/draw-rectangle!* 0 0 screen-width screen-height color-tint-gray)
-    (let [[_ texture cells] (first (:atlases game))
+    (let [{:keys [src-rects dst-rects texture]} (first (:tilesets game))]
-          {:keys [width height seg]} texture]
+      (dotimes [i (count src-rects)]
-      (doseq [[r c] cells]
+        (rl/draw-texture-pro! texture
-        (let [padding 10
+                              (get src-rects i)
-              curr-size (* cell-size scale)
+                              (get dst-rects i)
-              pos-x (+ (* padding (inc c)) (* c curr-size))
+                              {:x 0 :y 0} (float 0.0)
-              pos-y (+ (* padding (inc r)) (* r curr-size))
-              dst-rec (rl/rect-seg pos-x pos-y curr-size curr-size)
-              mouse-pos (rl/get-mouse-position)
-              {mx :x my :y} mouse-pos]
-          (rl/draw-texture-pro!* seg
-                                 (rl/rect-seg (* c cell-size) (* r cell-size) cell-size cell-size)
-                                 dst-rec
-                                 (rl/vec2-seg 0 0) (float 0.0)
                               rl/white)
-          (rl/draw-rectangle-lines!* pos-x pos-y curr-size curr-size rl/white)
+        (rl/draw-rectangle-lines! (get dst-rects i) rl/white))
-
+      (when-let [tile (:hovered-tile game)]
-          (when (rl/collision-point-rec? mouse-pos {:x pos-x :y pos-y :width curr-size :height curr-size})
+        (rl/draw-rectangle-lines! tile rl/green)))
-            (rl/draw-rectangle-lines!* pos-x pos-y curr-size curr-size rl/green)
-            (when (rl/mouse-button-pressed? rl/mouse-button-left)
-              ;; TODO: For the love of god fix this
-              (swap! e/game-state assoc :selected-tile [(:current-tilemap game) r c])
-              (swap! e/game-state dissoc :editor-mode))))))
     #_(doseq [[idx [k {:keys [width height seg]}]] (into [] (map-indexed vector) (:tilemaps game))
             :let [padding 10]]
       (rl/draw-texture-pro!* seg
@@ -331,8 +362,7 @@
 
 (defn watch-game [config game]
   {:mouse-pos (rl/get-mouse-position)
-   :current-layer (:current-layer game)
+   :state (dissoc game :tilemaps :tilesets :layers)})
-   :current-tilemap (:current-tilemap game)})
 
 (defn unload-game [game])
 
@@ -353,8 +383,9 @@
   ;; TODO: I hate this, terrible way to read game state, maybe pass an atom in?
   (reset! e/game-state (init-game {}))
   (swap! e/game-state :assoc :selected-tile [0 0 6])
-  e/game-state
+  (dissoc @e/game-state :tilemaps :tilesets)
 
   (:tilemaps @e/game-state)
+  (reset! e/use-debugger? true)
 
   :-)

src/rl.clj

@@ -221,6 +221,10 @@
   [x y w h color]
   (draw-rectangle-lines-raw!* (int x) (int y) (int w) (int h) color))
 
+(defn draw-rectangle-lines!
+  [{:keys [x y width height]} color]
+  (draw-rectangle-lines-raw!* (int x) (int y) (int width) (int height) color))
+
 (def ^:private draw-rectangle-lines-ex-raw!*
   (ffi/make-downcall "DrawRectangleLinesEx"
                      [::rectangle ::mem/float ::color] ::mem/void))
@@ -359,6 +363,20 @@
 (defn vec2-seg [x y]
   (mem/serialize {:x (float x) :y (float y)} ::vector-2 arena))
 
+(defn- rect-floats [{:keys [x y width height]}]
+  {:x (float x) :y (float y) :width (float width) :height (float height)})
+
+(def draw-texture-pro!
+  (let [src (mem/alloc-instance ::rectangle arena)
+        dst (mem/alloc-instance ::rectangle arena)
+        org (mem/alloc-instance ::vector-2 arena)]
+    (fn [texture src-rect dst-rect origin rotation color]
+      (mem/serialize-into (rect-floats src-rect) ::rectangle src arena)
+      (mem/serialize-into (rect-floats dst-rect) ::rectangle dst arena)
+      (mem/serialize-into {:x (float (:x origin)) :y (float (:y origin))}
+                          ::vector-2 org arena)
+      (draw-texture-pro!* (:seg texture) src dst org (float rotation) color))))
+
 (defn image-seg [img]
   (mem/serialize img ::image arena))