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Merge pull request #1660 from Xela10001/patch-2

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Midpoint-Based Movement Functionality Added
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Kade M 2021-08-08 13:42:11 -07:00 committed by GitHub
commit b2a2034690
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1 changed files with 24 additions and 24 deletions
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48
source/Alphabet.hx
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@ -1,5 +1,6 @@
package; package;
import flixel.math.FlxPoint;
import flixel.tweens.FlxEase; import flixel.tweens.FlxEase;
import flixel.tweens.FlxTween; import flixel.tweens.FlxTween;
import flixel.FlxG; import flixel.FlxG;
@ -285,32 +286,31 @@ class Alphabet extends FlxSpriteGroup
// ThatGuy: Ooga booga function for resizing text, with the option of wanting it to have the same midPoint // ThatGuy: Ooga booga function for resizing text, with the option of wanting it to have the same midPoint
// Side note: Do not, EVER, do updateHitbox() unless you are retyping the whole thing. Don't know why, but the position gets retarded if you do that // Side note: Do not, EVER, do updateHitbox() unless you are retyping the whole thing. Don't know why, but the position gets retarded if you do that
public function resizeText(xScale:Float, yScale:Float, xStaysCentered:Bool = true, yStaysCentered:Bool = false):Void { public function resizeText(xScale:Float, yScale:Float, xStaysCentered:Bool = true, yStaysCentered:Bool = false):Void {
var oldWidth:Float = this.width; var oldMidpoint:FlxPoint = this.getMidpoint();
var oldHeight:Float = this.height;
//trace('old x before scaling: ' + this.x);
//trace('old midpoint before scaling: ' + this.getMidpoint().x);
reType(text, xScale, yScale); reType(text, xScale, yScale);
//trace('old x after scaling: ' + this.x); if(!(xStaysCentered && yStaysCentered)){
//trace('old midpoint after scaling: ' + this.getMidpoint().x); if(xStaysCentered) {
//This works, commenting out all the tracing //I can just use this juicy new function i made
if(xStaysCentered) { moveTextToMidpoint(new FlxPoint(oldMidpoint.x, getMidpoint().y));
/* }
If oldX is the old position, that is the same for both sizes of text, e.g. oldX = 50 if(yStaysCentered) {
And oldWidth is the old width of the text, e.g. oldWidth = 100 moveTextToMidpoint(new FlxPoint(getMidpoint().x, oldMidpoint.y));
And newWidth is the current width of the text, e.g. newWidth= 150 }
And the midpoint, is always the same, e.g. midpoint = oldX + oldWidth/2 = 50 + 100/2 = 100 } else {
and the newMidpoint, which is equal to midpoint, is newX + newWidth/2, then moveTextToMidpoint(new FlxPoint(oldMidpoint.x, oldMidpoint.y));
newX = midpoint - newWidth/2 <=> newX = oldX + oldWidth/2 - newWidth/2, e.g., <=> newX = 50 + 100/2 - 150/2 <=> newX = 25
*/
//Since this.x doesnt change with text scaling, in this equation, this.x can be used as both the old and the new x
this.x = this.x + oldWidth/2 - this.width/2;
//trace('new x after scaling: ' + this.x);
//trace('new midpoint after scaling: ' + this.getMidpoint().x);
}
if(yStaysCentered) {
// Same logic applies here
this.y = this.y + oldHeight/2 - this.height/2;
} }
}
// ThatGuy: Function used to keep text centered on one point instead of manually having to come up with offsets for each sentence
public function moveTextToMidpoint(midpoint:FlxPoint):Void {
/*
e.g. You want your midpoint at (100, 100)
and your text is 200 wide, 50 tall
then, x = 100 - 200/2, y = 100 - 50/2
*/
this.x = midpoint.x - this.width / 2;
this.y = midpoint.y - this.height / 2;
} }
} }