Refactor input code

maths-attacks.p8

@@ -4,7 +4,7 @@ __lua__
 -- maths attacks --
 -- by djib --
 function _init()
-	cls()
+	cls(1)
 	init_btn_status()
 end
 
@@ -14,12 +14,10 @@ function _update()
 end
 
 function _draw()
-	cls()
-	rect(0,0,127,127,1)
 	draw_keypad()	
 	result=get_input()
 	if result!="" then
-		print(get_input())
+		print(get_input(),0)
 	end
 end
 -->8
@@ -72,107 +70,91 @@ function btn_pressed(button)
 	return btn_up_status[button]
 end
 -->8
--- game logic --
+-- keypad input --
+
+keys = {
+	{ --1
+ 	dx=0,dy=0,
+ 	up=true,down=false,
+ 	left=true,right=false
+ },
+ { --2
+ 	dx=1,dy=0,
+ 	up=true,down=false,
+ 	left=false,right=false
+ },
+ { --3
+ 	dx=2,dy=0,
+ 	up=true,down=false,
+ 	left=false,right=true
+ },
+ { --4
+ 	dx=0,dy=1,
+ 	up=false,down=false,
+ 	left=true,right=false
+ },
+ { --5
+ 	dx=1,dy=1,
+ 	up=false,down=false,
+ 	left=false,right=false
+ },
+ { --6
+ 	dx=2,dy=1,
+ 	up=false,down=false,
+ 	left=false,right=true
+ },
+ { --7
+ 	dx=0,dy=2,
+ 	up=false,down=true,
+ 	left=true,right=false
+ },
+ { --8
+ 	dx=1,dy=2,
+ 	up=false,down=true,
+ 	left=false,right=false
+ },
+ { --9
+ 	dx=2,dy=2,
+ 	up=false,down=true,
+ 	left=false,right=true
+ }
+}
 
 function get_input()
 	result=""
 	if btn_pressed(❎) then
-		if btn(⬆️) then
+		for k,v in pairs(keys) do
-			if btn(⬅️) then
+			if input_matches(v) then
-				result = "1"
+				result=tostr(k)
-			elseif btn(➡️) then
-				result = "3"
-			else
-				result = "2"
-			end
-		elseif btn(⬇️) then
-			if btn(⬅️) then
-				result = "7"
-			elseif btn(➡️) then
-				result = "9"
-			else
-				result = "8"
-			end
-		else
-			if btn(⬅️) then
-				result = "4"
-			elseif btn(➡️) then
-				result = "6"
-			else
-				result = "5"
 			end
 		end
 	elseif btn_held(❎) then
-		result = "clear!"
+		result = "fire!"
 	elseif btn_pressed(🅾️) then
 		result = "0"
 	elseif btn_held(🅾️) then
-		result = "fire!"
+		result = "clear!"
 	end
 	return result
 end
--->8
+
--- keypad input --
+function input_matches(v)
+	return btn(⬆️)==v.up and
+								btn(⬇️)==v.down and
+								btn(⬅️)==v.left and
+								btn(➡️)==v.right
+end
 
 function draw_keypad()
  -- size of keys
  local delta=8
  -- keypad location
 	local kx=(127-delta*3)/2
-	local ky=127-delta*3 
+	local ky=127-delta*3
+	rectfill(kx-1,ky-1,kx+3*delta,ky+3*delta,0)
 
-	local keys = {
-	 { --1
-	 	dx=0,dy=0,
-	 	up=true,down=false,
-	 	left=true,right=false
-	 },
-	 { --2
-	 	dx=1,dy=0,
-	 	up=true,down=false,
-	 	left=false,right=false
-	 },
-	 { --3
-	 	dx=2,dy=0,
-	 	up=true,down=false,
-	 	left=false,right=true
-	 },
-	 { --4
-	 	dx=0,dy=1,
-	 	up=false,down=false,
-	 	left=true,right=false
-	 },
-	 { --5
-	 	dx=1,dy=1,
-	 	up=false,down=false,
-	 	left=false,right=false
-	 },
-	 { --6
-	 	dx=2,dy=1,
-	 	up=false,down=false,
-	 	left=false,right=true
-	 },
-	 { --7
-	 	dx=0,dy=2,
-	 	up=false,down=true,
-	 	left=true,right=false
-	 },
-	 { --8
-	 	dx=1,dy=2,
-	 	up=false,down=true,
-	 	left=false,right=false
-	 },
-	 { --9
-	 	dx=2,dy=2,
-	 	up=false,down=true,
-	 	left=false,right=true
-	 }
-	}
 	for k,v in pairs(keys) do
-		if btn(⬆️)==v.up and
+		if input_matches(v) then
-					btn(⬇️)==v.down and
-					btn(⬅️)==v.left and
-					btn(➡️)==v.right then
 			offset=16
 		else
 			offset=0
@@ -183,20 +165,22 @@ function draw_keypad()
 		)
 	end
 end
+-->8
+
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