start building actual gameplay

main.fs

@@ -1,29 +1,98 @@
-\ JAVAPOOL incremental game
+\ JAVAPOOL - THE GAME (an incremental game based on the lore of #javapool on tilde.town)
 \ this code likely sucks, because I'm bad at forth and figuring stuff out as I go.
 
+\ ANSI escape sequences. gforth already provides at-xy and page, but I also need a word for clearing the current line and displaying the cursor.
+: hide-cursor esc[ ." ?25l" ;
+: show-cursor esc[ ." ?25h" ;
+: clear-line esc[ ." K" ;
+: move-right ( x -- )   esc[ 0 .R ." C" ;	
+
 \ initialise some variables that encode game state.
 \ the variable "counter" holds the count of the current tick. It always starts at 0.
 variable counter 
+\ the variable "devices" holds the amount of devices currently in the pool.
+variable devices
+\ the variable "devicerate" is the amount of ticks between devices getting added.
+variable devicerate
+2000 devicerate ! 
+\ the variable "membercost" is the cost of hiring a new chat member. If it is zero, hiring chat members hasn't been unlocked yet.
+variable membercost
+\ the variable "membercount" is how many chat members you've hired. For each chat member, device gain delay decreases.
+variable membercount
 
-\ the word tick waits a game tick. Pretty much 1/60th of a second.
-: tick   16 ms ; 
+\ the word !0= tests if something is non-zero
+: !0= 0= 0= ;
+
+\ the world unlock-members tests to see if hiring chat members can be unlocked. if so, they are unlocked.
+: unlock-members
+	devices @ 5 = membercost @ 0= and if
+		10 membercost ! then ;
+		
+\ the word unlock tests to see if any unlock conditions are matched, and unlocks them if they are.
+: unlock unlock-members ;
+
+\ the word tick waits a tick. Ticks are 1ms currently.
+: tick   1 ms ; 
 
 \ the word tick-up ticks the counter up
 : tick-up   tick 1 counter +! ;
 
-\ TODO cleanup, saving
-: exit-game   bye ;
+\ the word game-tick runs a single tick of the game
+: game-tick tick-up unlock counter @ 
+	devicerate @ mod 0= if 1 devices +! then ;
 
+\ TODO saving
+\ the word exit-game exits the game.
+: exit-game page show-cursor bye ;
+
+
+\ the word hire-chat-member hires a chat member.
+: hire-chat-member 
+	membercost @ dup !0= swap
+	devices @ <=
+	and if
+		devices @ membercost @ - devices !
+		devicerate @ 500 - devicerate !
+		1 membercount +! 
+		membercount @ 2 * 5 + membercost +! 
+		then ;
+
+	
+\ the word handle-input handles input every time around the game loop.
 : handle-input 
     key? if key case 
         [char] q of exit-game endof
+        [char] h of hire-chat-member endof
     endcase then ;
 
+\ print-rate prints the current device output rate on the screen.
+\ TODO make this be devices/s
+: print-rate 
+	2 set-precision
+	." (" devicerate @ s>f 1000e f/ 1e fswap f/ f. ." devices/second)" ;
+
+\ draw-devices draws the number of devices on the screen.
+: draw-devices 
+	devices @ dup
+	1 1 at-xy
+	clear-line
+	1 = if ." There is 1 device in the javapool." drop else
+	." There are " . ." devices in the javapool." then 
+	space print-rate ;
+
+\ draw-actions draws a list of the actions you've unlocked.
+: draw-actions
+	1 3 at-xy
+	membercost @ dup !0= if 
+		." (h)ire a chat member [" . ." Devices] (you have " membercount @ . ." chat members helping you)" cr
+	else drop then
+	1 move-right ." (q)uit" ;
+	
 \ TODO this is a stub
-: draw-screen   counter @ . ;
+: draw-screen  draw-devices draw-actions  ;
 
 \ main game loop
-: game-loop   begin tick-up handle-input draw-screen 0 until ;
+: game-loop   begin game-tick handle-input draw-screen 0 until ;
 
 \ clear the screen and start the game
-page game-loop
+page hide-cursor game-loop