basic FlappyBird clone in x86 32 bit assembly dosbox protected mode MASM syntax

draw.asm

IDEAL
P386
MODEL FLAT, C
ASSUME cs:_TEXT,ds:FLAT,es:FLAT,fs:FLAT,gs:FLAT
include "draw.inc"
;♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥
; DATASEG
;♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥
DATASEG

bottomGrass = 170								; position grass in Y
topGround = 180									; positon ground in Y

; color defined by the bios color attributes
colorPipes = 2
colorSky = 11
colorGrass = 10
colorGround = 6

colorBodyBird = 14								; color yellow
colorLipsBird = 12 								; color red
colorWhite = 15									; color white
colorBlack = 0									; color black

pipesDistance = 30								; pipe gate distance
pipeLarge = 25									; define how large pipes are

; pipes coordinates, respectivly pipe 1,2 3
; we give here parameter to start drawing pipe from left
; we also give the parameter to hight of gate pipes
pipeOneXleft = 280
pipeOneXright = pipeLarge + pipeOneXleft
pipeOneYupper = 50
pipeOneYbottom = pipesDistance + pipeOneYupper

pipeTwoXleft = 66
pipeTwoXright = pipeLarge + pipeTwoXleft
pipeTwoYupper = 80
pipeTwoYbottom = pipesDistance + pipeTwoYupper

pipeThreeXleft = 162
pipeThreeXright = pipeLarge + pipeThreeXleft
pipeThreeYupper = 30
pipeThreeYbottom = pipesDistance + pipeThreeYupper

;♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥
; CODE
;♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥
CODESEG
	
;$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
; DRAW BACKGROUND (SKY, GRASS AND GROUND)
;$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
PROC drawWorld							
	
	pusha
	
		mov 	cx, 0						; start drawing x position = 0
		mov 	dx, 0						; start drawing y position = 0
		mov 	al, colorSky				; draw sky blue (color is 11)
		
		@@drawBackgroundLayer:
			int 	10h 					; call BIOS service to draw the pixel
			inc 	cx						; go one pixel right
			cmp 	cx, 320					; look if we did draw all 320 horizontal pixels
			jl 		@@drawBackgroundLayer	; if not: continue drawing horizontaly until we reached the last horizontal pixel to the right
			inc 	dx						; if we did: jump one pixel under in order to draw the next horizontal line
			mov 	cx, 0					; we reset our pixel to the first one to the left
			cmp 	dx, bottomGrass			; look if we arrived to y = 150
			jl 		@@drawBackgroundLayer	; if not: continue drawing verticaly until we reached y = 150
			mov 	al, colorGrass			; if we did: change color to green (color is = 10)
			cmp 	dx, topGround			; look if we arrived to y = 160 (if whole grass terrain is colored or not)
			jl 		@@drawBackgroundLayer	; if not: continue the same loop as for the sky
			mov 	al, colorGround			; if we did then change color to brown (color is = 6)
			cmp 	dx, 200					; continue drawing ground until the end (y = 200)
			jl 		@@drawBackgroundLayer	; if we did reach y = 200 (everything is colored) then function is ended
		
	popa

	ret	
	
ENDP drawWorld


;$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
; DRAW THE WHOLE PIPES
;$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
PROC drawPipes								
	ARG startPosX:word, endPosX:word, upperGate:word, bottomGate:word
											; we our arguments with cx and dx and we get 4 arguments: 
											; - left x position where we start drawing
											; - right x position where we end the drawing
											; - height position y of the upper part of the pipe
											; - height position y of the bottom part of the pipe
	pusha
	
		mov 	cx, [startPosX]				; start drawing in x from left wehere assigned to
		mov 	dx, 0						; pipe drawing start always at y = 0 from
		mov 	al, colorPipes				; we choose color dark green (color = 2)
		
		@@drawPipesLayer:
			int 	10h 						; draw the pixel
			inc 	cx						; move 1 pixel to the right
			cmp 	cx, [endPosX]			; Are we arrived to the last horizontal pixel?
			jl 		@@drawPipesLayer		; if not: continue drawing horizontaly
			inc 	dx						; if yes: go down in y with one pixel
			mov 	cx, [startPosX]			; reset the horizontal drawing to the to the first pixel on the left
			cmp 	dx, [upperGate]			; did we reach the y = position of the upper part of the pipe?
			jl 		@@drawPipesLayer		; if not: continue drawing
			jg 		@@jump					; if we did then jump from drawing y = upperGate to y = bottomGate
			mov 	dx, [bottomGate]		; (jump needed otherwise stuck at 100)	
			@@jump:							; continue drawing from y = bottomGate to the end (y = 150)
			cmp 	dx, bottomGrass
			jl 		@@drawPipesLayer
			
		
	popa
	
	ret	
ENDP drawPipes


;$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
; ANIM PIPES BY REMOVING VERTICAL LEFT LINE 
; AND ADDING IT TO THE LEFT
;$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
PROC animPipes
	; the idea is simple: we remove on line of vertical pixels of the pipe.
	; this line is on the left. We remove it by remplacing the color of the pipe by the color of the sky.
	; we add one vertical line to the right with the same color as the pipe.
	; this creates a effect of movement.
	call 	animPipesFunction, pipeOneXleft, pipeOneYupper, pipeOneYbottom, colorSky			; send parameters to remove left side
	call 	animPipesFunction, pipeOneXright, pipeOneYupper, pipeOneYbottom, colorPipes			; send parameters to add right side

	call 	animPipesFunction, pipeTwoXleft, pipeTwoYupper, pipeTwoYbottom, colorSky			; send parameters to remove left side
	call 	animPipesFunction, pipeTwoXright, pipeTwoYupper, pipeTwoYbottom, colorPipes			; send parameters to add right side
	
	call 	animPipesFunction, pipeThreeXleft, pipeThreeYupper, pipeThreeYbottom, colorSky		; send parameters to remove left side
	call 	animPipesFunction, pipeThreeXright, pipeThreeYupper, pipeThreeYbottom, colorPipes	; send parameters to add right side
	
	call 	slide							; to shift the pipes place
	
	ret

ENDP animPipes


;$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
; SHIFT PIPES BY ONE FOR EVERY TIME MAIN LOOP IS DONE
;$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$

PROC slide
	
	cmp 	edi, 2						; we compare with the loop counter.
	jl 		@@Loopke					; we do it 1 times per 2 loops otherwise the pipes are moving too fast

	add 	bx, 1						; shift pipes to right by 1. When to the left we restart by substracting 320
	cmp 	bx, 320
	jl 		@@doNotResetValue
	sub 	bx, 320
	@@doNotResetValue:
	
	@@Loopke:
	
	ret
	
ENDP slide


PROC animPipesFunction
	ARG startPosXleft:word, pipeTop:word, pipeDown:word, kleur:byte
	
	pusha
		mov 	al, [kleur]					; set color to draw
		mov 	cx, [startPosXleft]			; define start position to start drawing
		add 	cx, bx						; modify position to make a "movement"
		mov 	dx, 0						; define start position in y to start drawing
		
		@@animPipesLayer:
			int 	10h 					; call BIOS interrupt to draw the pixel
			inc 	cx						; move one pixel to the right
			cmp 	cx, [startPosXleft + 1]	; because we want just to draw one vertical line we directly jump back to default
			jl 		@@animPipesLayer			
			inc 	dx						; we go one line under
			mov 	cx, [startPosXleft]		; like we said above, we jump cx back to default
			add 	cx, bx					
			cmp 	dx, [pipeTop]			; we do this until the end of the upperpipe
			jl 		@@animPipesLayer
			cmp 	dx, [pipeDown]			; if end of the upper pipe is reached we jump to the bottom pipe
			jg 		@@jump
			mov 	dx, [pipeDown]
			@@jump:
			cmp 	dx, bottomGrass			; we continue remplacing vertical lines until we arrived to the end
			jl 		@@animPipesLayer
	popa
	
	ret

ENDP animPipesFunction

;$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
; DRAW BIRD BY HORIZONTAL LINE. SEND WHERE START AND WHERE 
; TO END + COLOR. INCREMENT DX TO DRAW LINE UNDER
;$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$

PROC drawBird

		call 	drawBirdFunction, 256, 261, colorBlack
		inc 	dx
		
		call 	drawBirdFunction, 255, 255, colorBlack
		call 	drawBirdFunction, 256, 256, colorWhite
		call 	drawBirdFunction, 257, 257, colorBlack
		call 	drawBirdFunction, 258, 261, colorBodyBird
		call 	drawBirdFunction, 261, 263, colorBlack
		inc 	dx
		
		call 	drawBirdFunction, 254, 254, colorBlack
		call 	drawBirdFunction, 255, 258, colorWhite
		call 	drawBirdFunction, 258, 258, colorBlack
		call 	drawBirdFunction, 259, 263, colorBodyBird
		call 	drawBirdFunction, 263, 263, colorBlack
		inc 	dx

		call 	drawBirdFunction, 253, 253, colorBlack
		call 	drawBirdFunction, 254, 254, colorWhite
		call 	drawBirdFunction, 255, 255, colorBlack
		call 	drawBirdFunction, 256, 258, colorWhite
		call 	drawBirdFunction, 258, 258, colorBlack
		call 	drawBirdFunction, 259, 262, colorBodyBird
		call 	drawBirdFunction, 262, 266, colorBlack
		inc		dx
		
		call 	drawBirdFunction, 253, 253, colorBlack
		call 	drawBirdFunction, 254, 254, colorWhite
		call 	drawBirdFunction, 255, 255, colorBlack
		call 	drawBirdFunction, 256, 258, colorWhite
		call 	drawBirdFunction, 258, 258, colorBlack
		call 	drawBirdFunction, 259, 261, colorBodyBird
		call 	drawBirdFunction, 261, 261, colorBlack
		call 	drawBirdFunction, 262, 266, colorWhite
		call 	drawBirdFunction, 266, 266, colorBlack
		inc 	dx
		
		call 	drawBirdFunction, 253, 253, colorBlack
		call 	drawBirdFunction, 254, 257, colorWhite
		call 	drawBirdFunction, 257, 257, colorBlack
		call 	drawBirdFunction, 258, 260, colorBodyBird
		call 	drawBirdFunction, 260, 260, colorBlack
		call 	drawBirdFunction, 261, 266, colorWhite
		call 	drawBirdFunction, 266, 266, colorBlack
		inc 	dx
		
		call 	drawBirdFunction, 251, 257, colorBlack
		call 	drawBirdFunction, 257, 260, colorBodyBird
		call 	drawBirdFunction, 260, 260, colorBlack
		call 	drawBirdFunction, 261, 266, colorWhite
		call 	drawBirdFunction, 266, 266, colorBlack
		inc 	dx
		
		call 	drawBirdFunction, 250, 250, colorBlack
		call 	drawBirdFunction, 251, 257, colorLipsBird
		call 	drawBirdFunction, 257, 257, colorBlack
		call 	drawBirdFunction, 258, 261, colorBodyBird
		call 	drawBirdFunction, 261, 261, colorBlack
		call 	drawBirdFunction, 262, 265, colorWhite
		call 	drawBirdFunction, 265, 265, colorBlack
		inc 	dx
		
		call 	drawBirdFunction, 251, 257, colorBlack
		call 	drawBirdFunction, 257, 257, colorLipsBird
		call 	drawBirdFunction, 258, 258, colorBlack
		call 	drawBirdFunction, 259, 262, colorBodyBird
		call 	drawBirdFunction, 262, 265, colorBlack
		inc 	dx
		
		
		call 	drawBirdFunction, 251, 251, colorBlack
		call 	drawBirdFunction, 252, 257, colorLipsBird
		call 	drawBirdFunction, 257, 257, colorBlack
		call 	drawBirdFunction, 258, 264, colorBodyBird
		call 	drawBirdFunction, 264, 264, colorBlack
		inc 	dx
		
		call 	drawBirdFunction, 252, 257, colorBlack
		call 	drawBirdFunction, 257, 262, colorBodyBird
		call 	drawBirdFunction, 262, 264, colorBlack
		inc 	dx
		
		call 	drawBirdFunction, 257,262, colorBlack
		
		sub 	dx, 11								; we reset DX position as it was before the drawBird
		
	ret
	
ENDP drawBird


;$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
; THIS DRAWS FROM LEFT TO RIGHT. GIVE VALUE FOR X START
; AND X BEGIN. + COLOR. 
;$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$

PROC drawBirdFunction
	ARG begin:word, ending:word, kleurVogel:byte
	USES cx
	
	mov 	al, [kleurVogel]			; gives color 
	mov 	cx, [begin]					; give start place in x
	@@drawBirdLayer:
		int 	10h 					; call BIOS service to color pixel
		inc 	cx						; shift place to draw to one pixel right
		cmp 	cx, [ending]			; look if we are at the end 
		jl 		@@drawBirdLayer			; if so then stop drawing

	ret

ENDP drawBirdFunction


;$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
; SIMILAR METHOD AS FOR DRAWING BIRD BUT THIS CLEANS IT 
; JUST GIVE X BEGIN AND X END PLACE TO CLEAN
;$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$

PROC cleanPreviousBird
	
	call 	cleanBirdFunction, 256, 262
	call 	cleanBirdFunction, 255, 264
	call 	cleanBirdFunction, 254, 264
	call 	cleanBirdFunction, 253, 267
	call 	cleanBirdFunction, 253, 267
	call 	cleanBirdFunction, 253, 267
	call 	cleanBirdFunction, 251, 267
	call 	cleanBirdFunction, 250, 266
	call 	cleanBirdFunction, 251, 266
	call 	cleanBirdFunction, 251, 265
	call 	cleanBirdFunction, 252, 265
	call 	cleanBirdFunction, 257, 263
		
	sub 	dx, 12								; we reset DX position as it was before the drawBird

	ret
	
ENDP cleanPreviousBird

;$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
; JUST BEGIN AND END POSITION ARE NEEDED. NO COLOR 
; COLOR IS IN FUNCTION ITSELF BECAUSE ALWAYS = COLOR SKY
;$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$

PROC cleanBirdFunction
	ARG begin:word, ending:word
	USES cx
	
	mov 	al, colorSky				; gives color (here sky color)
	mov 	cx, [begin]					; gives start place to draw
	@@drawBirdLayer:
		int 	10h 					; call BIOS service to color pixel
		inc 	cx						; shift place to draw to one pixel right
		cmp 	cx, [ending]			; look if we are at the end 
		jl 		@@drawBirdLayer			; if so then stop drawing
	
	inc 	dx							; go to next horizontal line
	ret

ENDP cleanBirdFunction

END

draw.inc

GLOBAL 	drawWorld:PROC, \
		drawPipes:PROC, \
		animPipes:PROC, \
		slide:PROC, \
		drawBird:PROC, \
		cleanPreviousBird:PROC, \
		cleanPreviousBirdFunction:PROC, \
		drawBirdFunction:PROC, \
		animPipesFunction:PROC

main.asm

;♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥
; 32-bit Assembly game
; Made by lashi Dugagjin & Quentin Quevy
;♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥
IDEAL
P386
MODEL FLAT, C
ASSUME cs:_TEXT,ds:FLAT,es:FLAT,fs:FLAT,gs:FLAT

include "vga.inc"
include "text.inc"
include "world.inc"
include "draw.inc"

;♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥
; DATA
;♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥
DATASEG

birdPos	= 70							; place were bird starts
gravityPower = 3						; lower = greater gravity

pipesDistance = 30						; pipe gate distance
pipeLarge = 25							; define how large pipes are

; pipes coordinates, respectivly pipe 1,2 3
; we give here parameter to start drawing pipe from left
; we also give the parameter to hight of gate pipes
pipeOneXleft = 280
pipeOneXright = pipeLarge + pipeOneXleft
pipeOneYupper = 50
pipeOneYbottom = pipesDistance + pipeOneYupper

pipeTwoXleft = 66
pipeTwoXright = pipeLarge + pipeTwoXleft
pipeTwoYupper = 80
pipeTwoYbottom = pipesDistance + pipeTwoYupper

pipeThreeXleft = 162
pipeThreeXright = pipeLarge + pipeThreeXleft
pipeThreeYupper = 30
pipeThreeYbottom = pipesDistance + pipeThreeYupper

;♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥
; CODE
;♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥
CODESEG

PROC main
	
	call 	setVideoMode
	mov 	ah,	0Ch 						; function 0Ch to start the draw mode with int 10h
	

	call 	drawWorld						; draw the background (sky, grass and ground)
	
											; draw the pipes
	call 	drawPipes, pipeOneXleft, pipeOneXright, pipeOneYupper, pipeOneYbottom	
	call 	drawPipes, pipeTwoXleft, pipeTwoXright, pipeTwoYupper, pipeTwoYbottom
	call 	drawPipes, pipeThreeXleft, pipeThreeXright, pipeThreeYupper, pipeThreeYbottom
	
	mov 	bx, 0							; set value start value shift the pipes (start from 0)
	mov 	dx, birdPos						; set value start where bird is drawed
	mov 	edi, 0							; set start value loop for gravity (normaly always 0)
	push 	edi
	
	@@mainLoop:		
		call 	drawBird					; draw the bird	
		call 	animPipes					; move the pipes to the right
		call 	updateWorld					; wait for vertical retrace
		
		; GRAVITY BEGIN
		pop 	edi
		inc 	edi							; this a loop to slower down gravity. We count to 3. When 3 is reached then	
		cmp 	edi, gravityPower			; we draw the bird a little bit under where he was.
		jl 		@@Loop						; when 3 is not reached we move on, we do not mov the bird position
		call 	cleanPreviousBird
		inc 	dx							; increment (change bird position one pixel lower) when edi reached 3.
		mov 	edi, 0						; if gravity did affect then reset counter
		@@Loop:
		push 	edi
		; GRAVITY END
		
		
		call 	birdDied					; check if bird died if so this function will end the game
		call 	procesUserInput				; if game is not endend we check for user input en restart the loop.		
		jmp 	@@mainLoop	
		
	@@endOfLoop:
		call 	setTextMode					; function that quits the game
	
ENDP main
	
;♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥
; STACK
;♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥
STACK 1000h

END main

makefile

# =============================================================================
# Project makefile
# =============================================================================

# Settings
objs = text.obj vga.obj draw.obj world.obj main.obj
dest = main.exe

# =============================================================================
# Do NOT edit this section, unless you know what you are doing.
# =============================================================================
.asm.obj
  tasm /ml /m2 /w2 /z /zi /p /jIDEAL $<

$(dest): $(objs)
  wlink option quiet system pmodew name $@ file {$(objs)}

clean: .symbolic
  del *.obj
  del $(dest)

.silent
debug: $(objs) .symbolic
  wlink debug watcom lines option Q,C system pmodew name $(dest) file {$(objs)}
  wd /tr=rsi /li=43 $(dest)

text.asm

IDEAL
P386
MODEL FLAT, C
ASSUME cs:_TEXT,ds:FLAT,es:FLAT,fs:FLAT,gs:FLAT
include "text.inc"
include "draw.inc"
include "world.inc"
;♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥
; DATASEG
;♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥
DATASEG
;♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥
; CODE
;♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥
CODESEG

;$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
; SET TEXT MODE
;$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
PROC setTextMode

	mov 	ax,3h				; specify AH=0 (set video)
	int 	10h					; call VGA BIOS 
	
	mov 	eax, 4c00h          ; AH = 4Ch - Exit To DOS
	int 	21h     
	
	ret
	
ENDP setTextMode

;$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
; INPUT USER
;$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
PROC procesUserInput

	; get user input. If space is pressed then bird goes above
	; if nothing is pressed then nothing happens
	pusha
	
	mov 	ah, 01h				; look if there is anything in the keyboard buffer
	int 	16h					
	jz 		@@end				; if the keyboard buffer is 0 then jump to end
	mov 	ah, 00h				; if keyboard buffer is free then read user input
	int 	16h
	cmp 	al, ' '				; if user pressed the spacebar?
	jne 	@@end				; if not: jump to end (nothing happens)
	popa
	call 	cleanPreviousBird	; if bird moves, the old one has to be cleaned of the screen
	sub 	dx, 12				; if so then make bird jump by 9 pixels above
	pusha
	
	call 	sound, 4000		; play sound corresponding to 4000.
	
	@@end:
		popa
		

	
	ret
	
ENDP procesUserInput

END

text.inc

GLOBAL 	setTextMode:PROC, \
		procesUserInput:PROC

vga.asm

IDEAL
P386
MODEL FLAT, C
ASSUME cs:_TEXT,ds:FLAT,es:FLAT,fs:FLAT,gs:FLAT
include "vga.inc"
;♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥
; DATASEG
;♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥
DATASEG

;♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥
; CODE
;♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥
CODESEG

;$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
; SET VIDEO MODE 320x200
;$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
PROC setVideoMode

	pusha
	
		mov ax,13h		; specify AH=0 (set video)
		int 10h			; call VGA BIOS 
		
	popa	
	
	ret
ENDP setVideoMode
	
END

vga.inc

GLOBAL	setVideoMode:PROC

world.asm

IDEAL
P386
MODEL FLAT, C
ASSUME cs:_TEXT,ds:FLAT,es:FLAT,fs:FLAT,gs:FLAT
include "world.inc"
include "text.inc"
;♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥
; DATASEG
;♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥
DATASEG

CollisionXleft = 246 
CollisionXright = 270
offsetBirdInY = 12

detectColorPipe = 2
detectColorGrass = 10
detectColorGround = 6

;♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥
; CODE
;♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥
CODESEG

;$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
; VERTICAL RETRACE METHOD
;$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$

PROC updateWorld
	
	pusha
		mov 	dx, 03dah 					; vga status port
		@@waitVBlank_wait1: 				; if already in VB, then wait until it is finished
			in 		al, dx					; read status
			and 	al, 8 					; test bit
			jnz 	@@waitVBlank_wait1 		; busy waiting if in VB
			@@waitVBlank_wait2:				; wait until begin of a new VB
				in 		al, dx 				; read status
				and 	al, 8 				; test bit
				jz 		@@waitVBlank_wait2 	; busy wait if not in VB
	popa
		
	ret
	
ENDP updateWorld


PROC birdDied

	mov 	ah, 0Dh			; we activate the function to read pixels color at a given place x = cx and y = dx
		
	call 	checkCollision, CollisionXleft,0,detectColorPipe							; if touched pipes with head left side
	call 	checkCollision, CollisionXleft, offsetBirdInY,detectColorPipe				; if touched pipes with head down left side
	call 	checkCollision, CollisionXright,0,detectColorPipe							; if touched pipes with head right side 
	call 	checkCollision, CollisionXright, offsetBirdInY, detectColorPipe				; if touched pipes with head down right side
		
	call 	checkCollision, CollisionXright - 8, offsetBirdInY + 5, detectColorGrass	; if touched floor (grass)
	call 	checkCollision, CollisionXleft, 0, detectColorGround						; if fly too high (out of screen)
		
	mov 	ah, 0Ch			; we desactivate the function to read pixels and go back in write pixel modus
		
	ret


ENDP birdDied

PROC checkCollision
	ARG placeX:word, placeY:word, kleur:byte	
	
	mov 	cx, [placeX]		; go to x coordinate
	add 	dx, [placeY]		; go to y coordinate relative to bird
	int 	10h					; read color
	sub 	dx, [placeY]		; reset relative position to bird
	cmp 	al, [kleur]			; compare color if it is the same the color that we want to detect nearby or bird
	jne 	@@doNotEndGame		; if yes then end game if not continue game
	
	call 	sound, 5000			; if not then end game but before play some sound
	call 	sound, 6000
	call 	setTextMode			; we end game and set text mode back
	
	@@doNotEndGame:
	
	ret

ENDP checkCollision

PROC sound
	ARG freq:word
	USES ax

    mov     al, 182         ; prepare the speaker for the note
    out     43h, al          
    mov     ax, [freq]  	; frequency number in decimar

    out     42h, al         ; output low byte
    mov     al, ah          ; output high byte
    out     42h, al 
    in      al, 61h         ; turn on note (get value from port 61h)
	
    or      al, 00000011b   ; set bits 1 and 0
    out     61h, al         ; send new value
    mov     bx, 3           ; break for duration of note
	
	@@break1:				; we doe some breaks to limit sound duration
        mov     cx, 65535			
		@@break2:
			dec     cx
			jne     @@break2
			dec     bx
			jne     @@break1
			in      al, 61h         ; turn off note (get value from port 61h)
			and     al, 11111100b   ; reset bits 1 and 0
			out     61h, al         ; send new value

	ret 
	
ENDP sound


END

world.inc

GLOBAL 	updateWorld:PROC, \
		birdDied:PROC, \
		checkCollision:PROC, \
		sound:PROC, \
		gravity:PROC

how to run it on dosbox?

Hi,

It's a long time ago like almost 9 years. I need to have a look into it to refresh my memory on this. I will do it as soon as I got some free time and will update you @abeerstupid

Yes please i would love that, I ran it on dosBOX by copying it but it had a lot of errors

…

On Fri, 8 Dec 2023, 10:11 pm Dugagjin Lashi, ***@***.***> wrote: ***@***.**** commented on this gist. ------------------------------ how to run it on dosbox? Hi, It's a long time ago like almost 9 years. I need to have a look into it to refresh my memory on this. I will do it as soon as I got some free time and will update you @abeerstupid <https://github.com/abeerstupid> — Reply to this email directly, view it on GitHub <https://gist.github.com/dugagjin/7fb95d11b644a39dfeab#gistcomment-4786873> or unsubscribe <https://github.com/notifications/unsubscribe-auth/BEQTHYUTA5K2OLR6CNKISITYINC3JBFKMF2HI4TJMJ2XIZLTSKBKK5TBNR2WLJDHNFZXJJDOMFWWLK3UNBZGKYLEL52HS4DFQKSXMYLMOVS2I5DSOVS2I3TBNVS3W5DIOJSWCZC7OBQXE5DJMNUXAYLOORPWCY3UNF3GS5DZVRZXKYTKMVRXIX3UPFYGLK2HNFZXIQ3PNVWWK3TUUZ2G64DJMNZZDAVEOR4XAZNEM5UXG5FFOZQWY5LFVAZDSOBUGI3DIMVHORZGSZ3HMVZKMY3SMVQXIZI> . You are receiving this email because you were mentioned. Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub> .