add easing functions, fixed draw_outlined_text

Author: mstop4

Drawing/draw_outlined_text.gml

@@ -24,7 +24,7 @@ var _alpha = argument[9];
 var _fidelity = argument[10];
 
 draw_set_color(_out_color);
-for (var i=0; i<360; i+=360/4)
+for (var i=0; i<360; i+=360/_fidelity)
 	draw_text(_x + lengthdir_x(1, i),
 			  _y + lengthdir_y(1, i),
 			  _str);

Easing/easeInCubic/easeInCubic.gml

@@ -0,0 +1,16 @@
+/// @arg	t
+/// @arg	start
+/// @arg	magnitude
+/// @arg	duration (max_t)
+
+// x = t / d
+// y = m * x^3 + s
+
+var _t = argument[0];
+var _start = argument[1];
+var _magnitude = argument[2];
+var _duration = argument[3];
+
+var _norm_t = _t / _duration;
+
+return _magnitude * _norm_t * _norm_t *_norm_t + _start;

Easing/easeInCubic/easeInCubic.yy

@@ -0,0 +1,16 @@
+/// @arg	t
+/// @arg	start
+/// @arg	magnitude
+/// @arg	duration (max_t)
+
+// x = t / d
+// y = m * x^2 + s
+
+var _t = argument[0];
+var _start = argument[1];
+var _magnitude = argument[2];
+var _duration = argument[3];
+
+var _norm_t = _t / _duration;
+
+return _magnitude * _norm_t * _norm_t + _start;

Easing/easeInQuad/easeInQuad.gml

@@ -0,0 +1,16 @@
+/// @arg	t
+/// @arg	start
+/// @arg	magnitude
+/// @arg	duration (max_t)
+
+// x = t / d
+// y = m * x + s
+
+var _t = argument[0];
+var _start = argument[1];
+var _magnitude = argument[2];
+var _duration = argument[3];
+
+var _norm_t = _t / _duration;
+
+return _magnitude * _norm_t + _start;

Easing/easeInQuad/easeInQuad.yy

@@ -0,0 +1,16 @@
+/// @arg	t
+/// @arg	start
+/// @arg	magnitude
+/// @arg	duration (max_t)
+
+// x = t / d
+// y = m * ((x-1)^3 + 1) + s
+
+var _t = argument[0];
+var _start = argument[1];
+var _magnitude = argument[2];
+var _duration = argument[3];
+
+var _norm_t = (_t / _duration) - 1;
+
+return _magnitude * (_norm_t * _norm_t * _norm_t + 1) + _start;

Easing/easeLinear/easeLinear.gml

@@ -0,0 +1,16 @@
+/// @arg	t
+/// @arg	start
+/// @arg	magnitude
+/// @arg	duration (max_t)
+
+// x = t / d
+// y = -m * (x^2 - 2x) + s
+
+var _t = argument[0];
+var _start = argument[1];
+var _magnitude = argument[2];
+var _duration = argument[3];
+
+var _norm_t = _t / _duration;
+
+return -_magnitude * _norm_t * (_norm_t-2) + _start;