Manage keypad display

maths-attacks.p8

@@ -14,13 +14,16 @@ function _update()
 end
 
 function _draw()
+	cls()
+	rect(0,0,127,127,1)
+	draw_keypad()	
 	result=get_input()
 	if result!="" then
 		print(get_input())
 	end
 end
 -->8
--- buttons --
+-- button management --
 
 function init_btn_status()
  -- no repeating delay for keyboard
@@ -108,10 +111,92 @@ function get_input()
 	end
 	return result
 end
+-->8
+-- keypad input --
+
+function draw_keypad()
+ -- size of keys
+ local delta=8
+ -- keypad location
+	local kx=(127-delta*3)/2
+	local ky=127-delta*3 
+
+	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
+					btn(⬇️)==v.down and
+					btn(⬅️)==v.left and
+					btn(➡️)==v.right then
+			offset=16
+		else
+			offset=0
+		end
+		spr(k+offset,
+			kx+v.dx*delta,
+			ky+v.dy*delta
+		)
+	end
+end
 __gfx__
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