From 7b9e9c34f30ad0952a7ce50cf40690d9bfb6c7cf Mon Sep 17 00:00:00 2001
From: Svjatoslav Agejenko <svjatoslav@svjatoslav.eu>
Date: Sat, 26 Oct 2024 11:19:36 +0300
Subject: [PATCH] Using AI to improve code readability

---
 Graphics/Animations/sun&eart.bas | 114 ++++++++++++++++++++++---------
 1 file changed, 82 insertions(+), 32 deletions(-)

diff --git a/Graphics/Animations/sun&eart.bas b/Graphics/Animations/sun&eart.bas
index eededed..ee277cc 100755
--- a/Graphics/Animations/sun&eart.bas
+++ b/Graphics/Animations/sun&eart.bas
@@ -1,45 +1,95 @@
-' Sun; Earth and Moon
-' made by Svjatoslav Agejenko
-' in 1999
-' H-Page: svjatoslav.eu
-' E-Mail: svjatoslav@svjatoslav.eu
- 
-
-DECLARE SUB maa (a2%, b2%, c2%)
-DEFINT A-Y
-DIM SHARED zw
-DIM SHARED zy
+' Projects animation of the sun, earth and moon.
+' The moon orbits the earth, and the earth orbits the sun.
+' The program uses clever trickery to determine
+' the drawing order of the objects based on their y-coordinates.
+
+' By Svjatoslav Agejenko.
+' Email: svjatoslav@svjatoslav.eu
+' Homepage: http://www.svjatoslav.eu
+
+' Changelog:
+' 1999, Initial version
+' 2024, Improved program readability using AI
+
+
+DECLARE SUB drawEarthMoonSystem (a2!, b2!, c2!)
+
+DIM SHARED moonX
+DIM SHARED moonY
 SCREEN 7, , , 1
 
+' Initialize the earth rotation angle
+earthRotationAngle = 0
+
+' Main loop to update and draw the objects
+1 : 
+    ' Increment the earthRotationAngle for every frame
+    earthRotationAngle = earthRotationAngle + .01
+
+    ' Calculate the x and y coordinates of the earth
+    earthX = SIN(earthRotationAngle) * 100 + 100
+    earthY = COS(earthRotationAngle) * 30 + 100
+
+    ' Because we dont do proper earth, moon and sun Z-sorting,
+    ' instead we implement clever trickery to determine, should
+    ' sun be drawn before earth-moon system, or after.
+    IF earthY >= 100 THEN
+        ' Draw the sun
+        CIRCLE (100, 100), 50, 12
+        PAINT (100, 100), 12
+    END IF
+
+    ' Call the subroutine to draw the earth-moon system
+    drawEarthMoonSystem earthX, earthY, (earthY - 70) / 2 + 2
+
+    IF earthY < 100 THEN
+        ' Draw the sun
+        CIRCLE (100, 100), 50, 12
+        PAINT (100, 100), 12
+    END IF
+
+    ' Copy the screen to buffer
+    PCOPY 0, 1
+
+    ' Clear the screen
+    CLS
 
+    ' Check if a key is pressed
+    IF INKEY$ = "" THEN GOTO 1
 
-z = 0
-1
-z = z + .01
-a1 = SIN(z) * 100 + 100
-b1 = COS(z) * 30 + 100
-IF b1 >= 100 THEN CIRCLE (100, 100), 50, 12: PAINT (100, 100), 12
-maa a1, b1, (b1 - 70) / 2 + 2
-IF b1 < 100 THEN CIRCLE (100, 100), 50, 12: PAINT (100, 100), 12
-PCOPY 0, 1
-CLS
-IF INKEY$ = "" THEN GOTO 1
+' End the program
 SYSTEM
 
-SUB maa (a2, b2, c2)
-ed = (b2 - 70) / 2 + 2
+SUB drawEarthMoonSystem (a2, b2, c2)
+    moonSize = (b2 - 70) / 2 + 2
 
-zw = zw + .1
-zy = zy + .01
+    ' Increment the moon's x and y coordinates
+    moonX = moonX + .1
+    moonY = moonY + .01
 
-a1 = SIN(zw) * ed * 2
-b1 = COS(zw) * 10
+    ' Calculate the x and y offsets for the moon
+    moonOffsetX = SIN(moonX) * moonSize * 2
+    moonOffsetY = COS(moonX) * 10
 
-IF b1 > 0 THEN CIRCLE (a2, b2), c2, 1: PAINT (a2, b2), 1
+    ' Because we don't do proper earth and moon Z-sorting,
+    ' instead we implement clever trickery to determine, should
+    ' earth be drawn before moon or after.
+    IF moonOffsetY > 0 THEN
+        ' Draw the earth
+        CIRCLE (a2, b2), c2, 1
+        PAINT (a2, b2), 1
+    END IF
 
-CIRCLE (a1 + a2, b1 + b2), ((b1 + 20) * ed) \ 50, 14
-PAINT (a1 + a2, b1 + b2), 14
+    ' Calculate the x and y coordinates of the moon and draw it
+    moonXCoord = moonOffsetX + a2
+    moonYCoord = moonOffsetY + b2
+    CIRCLE (moonXCoord, moonYCoord), ((moonOffsetY + 20) * moonSize) \ 50, 14
+    PAINT (moonXCoord, moonYCoord), 14
 
-IF b1 <= 0 THEN CIRCLE (a2, b2), c2, 1: PAINT (a2, b2), 1
+    IF moonOffsetY <= 0 THEN
+        ' Draw the earth
+        CIRCLE (a2, b2), c2, 1
+        PAINT (a2, b2), 1
+    END IF
 END SUB
 
-- 
2.20.1