tui-cat.red

Red [
	Title:  "TUI-PAC"
	Needs:	'View
	Config: [GUI-engine: 'terminal]
	Description: {A Pacman clone made to test Red TUI (Text User Interface) Engine}
	Author: "Giuseppe Chillemi"
	Copyright: "To Be defined"
	TBD: {
		Redo the engine to keep on the central way and not on lateral space
		Fix the uncentered PAC
		Add lateral walls trepassing management
		Add ghosts
		Add Big Pill management
		Add hi-score
		Save Hi-Score
		Add level editor
		Add "hidden" playmode
		Make the path engine able to handle all
		mazes
		Toggle debug informations
		
	}
	notes: {
	   maze taken from here: 
	   https://codeberg.org/NNB/ansi/ (This resource is full of links!!!)
	   that has also been taken from
	   https://www.reddit.com/r/unixporn/comments/jisfcx/oc_pacman_prompt_anyone/
	}
	LOG: {
		Changed the name to TUI-PAC
	}
	
]

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}

ctx-maze: make object! [
	
	the-maze: copy maze-binary
	
	maze: none
	
	Start-time: none
	
	last-time: none
	
	record-time: none

;--- Characters, unused in the source but listed here for personal preference
	
	esc: #{1B}
	open-square: #{5B}
	zer: #{30} ;0
	emme: #{6D} ;m
	agrave: #{E2}
	
	escape-agrave: rejoin [#{1B} #{E2}] ;escape-paren
	escape-paren: rejoin [#{1B} #{5B}] ;????

;--- From here on we use all elements

;--- Walls

	double-h: rejoin [#{E2} #{95} #{90}] ;double horizontal line
	double-v: rejoin [#{E2} #{95} #{91}]	;double vertical line line
	double-ul: rejoin [#{E2} #{95} #{94}]	;double upper left angle
	double-ur: rejoin [#{E2} #{95} #{97}]	;double upper right angle
	double-lr: rejoin [#{E2} #{95} #{9D}] ;double lower right angle
	double-lowerleft: rejoin [#{E2} #{95} #{9A}] ;double lower left angle
	double-t-down: rejoin [#{E2} #{95} #{A4}] ;double line T point down
	;double-t-up: rejoin [#{E2} #{95} #{A4}]; double line T point up	

	double-t-right: rejoin [#{E2} #{95} #{9F}] ;double line T right direction
	double-t-left: rejoin [#{E2} #{95} #{A2}] ;double line T left direction


	single-h: rejoin [#{e2} #{94} #{80}] ; horizontal line
	single-h2: rejoin [#{e2} #{94} #{81}] ; horizontal line2
	single-v: rejoin [#{e2} #{94} #{82}] ; vertical line

	single-ur: rejoin [#{e2} #{94} #{90}] ; upper right angle
	single-lr: rejoin [#{e2} #{94} #{98}] ; lower right angle

	single-ul: rejoin [#{e2} #{94} #{8c}] ; upper left angle
	single-ll: rejoin [#{e2} #{94} #{94}] ; lower left angle

;--- This is the parse rule containing all the elements we can't walk over

	walls-p: [

		double-h |
		double-v |
		double-ul	|
		double-ur |
		double-lr |
		double-lowerleft |
		double-t-down |
		double-t-right |
		double-t-left |

		single-h |
		single-h2 |
		single-v |

		single-ur |
		single-lr |

		single-ul |
		single-ll 
		
	]

;== Commands

;--- Colors - Neutral
	
	ye: rejoin [#{1B} #{5B} #{33} #{34} #{6D}]
	bl: rejoin [#{1B} #{5B} #{33} #{33} #{6D}]


	linefeed: #{0A}

	reset: rejoin [#{1B} #{5B} #{30} #{6D}]
	
;---The parse rule for those commands

	neutral-p: [ye | bl | reset]


;--- Allowed
;--- Pac cat can wolk over all there characters

	spc1: #{20} ;space
	big-dot: rejoin [#{e2} #{97} #{8f}] ;big dot
	dot: rejoin [#{e2} #{80} #{a2}]  ;

;--- The rule tu match them
	allowed-p: [spc1 | big-dot | dot]	

	
	;A simple test I can manualli use, so the if the rules matches alle the elements, returns true. 
	; It means every single combination of the maze is parsed
	; note: longest rules first
	;
	test-rules: does [
		probe parse the-maze [some [ walls-p | allowed-p | neutral-p | linefeed ] end]
	]
	

	;Counter of dots left in the map
	
	dots-count: 0

;---Here we extract dot count and build map of all the elements we can walk on
;
;---ANSI Maze works this way: 
;  We have solid elements and commands
;  each line has element until line feed
;  We create a map made of lines and solid alements with ù
;  their index on screen and also on the original binary

	process-maze: func [ 
		/local
		idx
		line-pos
		line
		mapp
		pos-solid
		;rounds-in
		;rounds-out
		;append-line?
		x
		y
		incx
		incy
		decx
		decy
		inc-dots-count
	] [
		;rounds-in: 0
		;rounds-out: 0
		x: 0
		y: 0
		incx: does [x: x + 1]
		decx: does [x: x - 1]
		incy: does [y: y + 1]
		decy: does [y: y - 1]
		inc-dots-count: does [dots-count: dots-count + 1]

		mapp: copy [
			
			;Structure:
			;[maze-pos pos]
			;
		]
		
		line: copy []
		
		parse the-maze [
			some  [
				some [ walls-p (incx) | pos-solid: allowed-p (append line reduce [incx index? pos-solid]) | neutral-p ]
				 line-pos: linefeed    
				(
					if true [append/only mapp line x: 0]
					line: copy []
				)
				
			]  
			end			
		]
		
		dots-count: 0
		
		;---Extracting the dots count
		;
		parse the-maze [any [dot (inc-dots-count) | big-dot (inc-dots-count) | skip] to end]
			
		maze: mapp 
	]


	; The starting pos of PAC CAT

	pac-pos: 20x20
	
	match-value: func [
		"If the input matches the value at the starting point returns true"
		series [string! binary! issue!]
		value [string! binary! issue!]
		/local
		ln
	] [
		ln: length? value
		series: copy/part series ln
		either value = series [true] [false]
	]
	
	move-pac: func [
		direction
		/local
		x
		y
		selected
		next-pac-pos		
	] [
		switch direction [
			left [next-pac-pos: paccat/offset - 1x0]
			right [next-pac-pos: paccat/offset + 1x0]
			up [next-pac-pos: paccat/offset - 0x1]
			down [next-pac-pos: paccat/offset + 0x1]
			
		]

		
		insert clear head xpos/text to-string to-integer first paccat/offset
		insert clear head ypos/text to-string to-integer second paccat/offset

		x: to-integer first next-pac-pos
		y: to-integer second next-pac-pos


		insert clear head next-pos/text to-string next-pac-pos
		insert clear head nextxpos/text to-string x
		insert clear head nextypos/text to-string y 
		
		if selected: select/skip maze/(y + 1) (x + 1) 2 [
			paccat/offset: next-pac-pos
			insert clear head maze-selected/text to-string selected
			insert clear head ascii-selected/text mold copy/part at the-maze selected 15
			
			if parse at the-maze selected [1 [dot | big-dot] to end] [
				ln-dot: length? dot
				remove/part at the-maze selected ln-dot
				insert at the-maze selected spc1 
				insert clear head board/text to-string head the-maze
				the-maze: head the-maze
				
				;--For debugging purpose
				;
				;write %modified-maze.ansi head the-maze				
			]
			

			process-maze
			insert clear head dotsc/text to-string dots-count
			
			if dots-count = 0 [
				
				view me: layout/tight [
					on-key [
						case [
							any [event/key = #"y" event/key = #"Y"] [unview/all start-pac] 
							any [event/key = #"n" event/key = #"N"]  [unview/all quit]
						]
					]
					
					origin 13x10
					Style text3: text 35x1 blue
					below
					text3 "You won!!! You are Fantastic!" 
					Text3 ""
					Text3 "" with [
						text: rejoin ["Completed in: "  last-time: now/time - start-time] 
					]
					

					
					Text3 ""
					Text3 "A giant THANK YOU to" 
					Text3 "the Red team for the TUI engine" 
					Text3 ""
					Text3 "Restart Y/N" red font-color white
					
				]
				
				;--- Print here in the middle of the base
			]
			
		] 
		
		
	]
	
]

start-pac: does [

	;Coping is needed when the game is restarted
	;
	ctx-maze/the-maze: copy maze-binary
	ctx-maze/start-time: now/time
	
	;--- TBD: Move this inside the object
	;				
	either ctx-maze/record-time [
		if ctx-maze/last-time < ctx-maze/record-time [ctx-maze/record-time: ctx-maze/last-time]
	] [
		ctx-maze/record-time: ctx-maze/last-time
	]
					

	;---Here we process the map, see the object member for a description of the process
	;
	ctx-maze/process-maze

	page-0: layout/tight [
		
		;--- Setting events
		
	 	on-key [
			switch event/key [
				left	[
					ctx-maze/move-pac 'left
				]
				right	[
					ctx-maze/move-pac 'right
				]
				up [
					ctx-maze/move-pac 'up
				]
				down	[
					ctx-maze/move-pac 'down
				]
				;--Reset the position
				
				#"t" [paccat/offset: 1x1]
				#"q" [unview/all]
			]
		]
			

		panel 70x60 [
			
			board: base 60x60 transparent with [text: to-string ctx-maze/the-maze]
		]
		
		panel 40x40 [
			style text: text 30x1
			style ltext: text 15x1

			across
			ltext "Current" blue current-pos: text ""  return
			ltext "Now XPOS" xpos: text "" return
			ltext "Now YPOS" ypos: text ""  return
			text "Requested positions" red return
			ltext "Next Pos: " next-pos: text "" return 
			ltext "Next XPOS" nextxpos: text "" return
			ltext "Next YPOS" nextypos: text "" return
			ltext "Sel on Maze:" maze-selected: text "---" return
			ltext "BIN STREAM:" ascii-selected: text "xxxxxxxxxx" return
			ltext "" return
			ltext "Dots-count:"  DOTSC: text 5x1 data ctx-maze/dots-count brown return
			ltext "" return
			ltext "Last Time:"  LAST-TIME: text 15x1 data ctx-maze/last-time blue return
			ltext "Record:"  RECORD-TIME: text 15x1 data ctx-maze/record-time  return
			ltext "" return
			ltext "Press Q to quit" magenta return

		]
		
		
		origin 20x20 space 1x1

		paccat: base transparent 2x1 "🐱"

	]

	view page-0
]

start-pac