Add basic implementation of game input

maths-attacks.p8

@@ -4,6 +4,7 @@ __lua__
 -- maths attacks --
 -- by djib --
 function _init()
+	cls()
 	init_btn_status()
 end
 
@@ -13,9 +14,10 @@ function _update()
 end
 
 function _draw()
-	cls()
- print("❎ - pressed:"..tostr(btn_pressed(❎)).." - held:"..tostr(btn_held(❎)),1,1)
- print("🅾️ - pressed:"..tostr(btn_pressed(🅾️)).." - held:"..tostr(btn_held(🅾️)),1,10)
+	result=get_input()
+	if result!="" then
+		print(get_input())
+	end
 end
 -->8
 -- buttons --
@@ -32,8 +34,11 @@ function init_btn_status()
 end
 
 function update_btn_status(button)
+ -- clear held status
+ if	btn_held_status[button] then
+  btn_held_status[button]=false
  -- button was already pressed --
- if btn_down_status[button] then
+ elseif btn_down_status[button] then
   -- button was held
  	if btnp(button) then
  		btn_held_status[button]=true
@@ -63,6 +68,46 @@ end
 function btn_pressed(button)
 	return btn_up_status[button]
 end
+-->8
+-- game logic --
+
+function get_input()
+	result=""
+	if btn_pressed(❎) then
+		if btn(⬆️) then
+			if btn(⬅️) then
+				result = "1"
+			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!"
+	elseif btn_pressed(🅾️) then
+		result = "0"
+	elseif btn_held(🅾️) then
+		result = "fire!"
+	end
+	return result
+end
 __gfx__
 00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
 00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000