add asset for ChainEdge (attack)

fcore/chain-edge.sml

@@ -0,0 +1,49 @@
+structure ChainEdgeRight =
+struct
+  fun lerp (startX, startY, drawWidth, drawHeight, windowWidth, windowHeight, r, g, b) : Real32.real vector =
+    let
+       val endY = windowHeight - startY
+       val startY = windowHeight - (startY + drawHeight)
+       val endX = startX + drawWidth
+       val windowHeight = windowHeight / 2.0
+       val windowWidth = windowWidth / 2.0
+    in
+       #[      (((startX * (1.0 - 0.0)) + (endX * 0.0)) / windowWidth) - 1.0,
+      (((startY * (1.0 - 0.799999952316)) + (endY * 0.799999952316)) / windowHeight) - 1.0, 
+      r, g, b,
+
+      (((startX * (1.0 - 0.0)) + (endX * 0.0)) / windowWidth) - 1.0,
+      (((startY * (1.0 - 0.200000017881)) + (endY * 0.200000017881)) / windowHeight) - 1.0,
+      r, g, b,
+
+      (((startX * (1.0 - 1.0)) + (endX * 1.0)) / windowWidth) - 1.0,
+      (((startY * (1.0 - 0.485714316368)) + (endY * 0.485714316368)) / windowHeight) - 1.0, 
+      r, g, b
+    ]
+  end
+end
+
+structure ChainEdgeLeft =
+struct
+  fun lerp (startX, startY, drawWidth, drawHeight, windowWidth, windowHeight, r, g, b) : Real32.real vector =
+    let
+       val endY = windowHeight - startY
+       val startY = windowHeight - (startY + drawHeight)
+       val endX = startX + drawWidth
+       val windowHeight = windowHeight / 2.0
+       val windowWidth = windowWidth / 2.0
+    in
+       #[      (((startX * (1.0 - 1.0)) + (endX * 1.0)) / windowWidth) - 1.0,
+      (((startY * (1.0 - 0.799999952316)) + (endY * 0.799999952316)) / windowHeight) - 1.0, 
+      r, g, b,
+
+      (((startX * (1.0 - 1.0)) + (endX * 1.0)) / windowWidth) - 1.0,
+      (((startY * (1.0 - 0.200000017881)) + (endY * 0.200000017881)) / windowHeight) - 1.0, 
+      r, g, b,
+
+      (((startX * (1.0 - 0.0)) + (endX * 0.0)) / windowWidth) - 1.0,
+      (((startY * (1.0 - 0.485714316368)) + (endY * 0.485714316368)) / windowHeight) - 1.0, 
+      r, g, b
+    ]
+  end
+end

fcore/player.sml

@@ -548,7 +548,7 @@ struct
     case #mainAttack player of
       MAIN_ATTACKING {length, ...} =>
         let
-          val {x, y, ...} = player
+          val {x, y, facing, ...} = player
           val wratio = width / Constants.worldWidthReal
           val hratio = height / Constants.worldHeightReal
           val x =
@@ -573,18 +573,13 @@ struct
               val {charge, ...} = player
               val alpha = Real32.fromInt charge / 60.0
             in
-              Field.lerp
-                ( x
-                , y
-                , realLength
-                , realSize
-                , width
-                , height
-                , 0.7
-                , 0.7
-                , 1.0
-                , alpha
-                )
+              case facing of
+                FACING_RIGHT =>
+                  ChainEdgeRight.lerp
+                    (x, y, realLength, realSize, width, height, 0.5, 0.5, 0.5)
+              | FACING_LEFT =>
+                  ChainEdgeLeft.lerp
+                    (x, y, realLength, realSize, width, height, 0.5, 0.5, 0.5)
             end
           else
             let
@@ -603,18 +598,13 @@ struct
               val {charge, ...} = player
               val alpha = Real32.fromInt charge / 60.0
             in
-              Field.lerp
-                ( x
-                , y
-                , realLength
-                , realSize
-                , width
-                , height
-                , 0.7
-                , 0.7
-                , 1.0
-                , alpha
-                )
+              case facing of
+                FACING_RIGHT =>
+                  ChainEdgeRight.lerp
+                    (x, y, realLength, realSize, width, height, 0.5, 0.5, 0.5)
+              | FACING_LEFT =>
+                  ChainEdgeLeft.lerp
+                    (x, y, realLength, realSize, width, height, 0.5, 0.5, 0.5)
             end
         end
     | _ => Vector.fromList []