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85 lines
3.2 KiB
C#
85 lines
3.2 KiB
C#
// ClassicalSharp copyright 2014-2016 UnknownShadow200 | Licensed under MIT
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using System;
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using ClassicalSharp.Model;
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using OpenTK;
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namespace ClassicalSharp {
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/// <summary> Entity component that performs model animation depending on movement speed and time. </summary>
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public sealed class AnimatedComponent {
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Game game;
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Entity entity;
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public AnimatedComponent( Game game, Entity entity ) {
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this.game = game;
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this.entity = entity;
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}
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public float legXRot, armXRot, armZRot;
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public float bobYOffset, tilt, walkTime, swing;
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internal float walkTimeO, walkTimeN, swingO, swingN;
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internal float leftXRot, leftZRot, rightXRot, rightZRot;
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/// <summary> Calculates the next animation state based on old and new position. </summary>
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public void UpdateAnimState( Vector3 oldPos, Vector3 newPos, double delta ) {
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walkTimeO = walkTimeN;
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swingO = swingN;
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float dx = newPos.X - oldPos.X;
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float dz = newPos.Z - oldPos.Z;
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double distance = Math.Sqrt( dx * dx + dz * dz );
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if( distance > 0.05 ) {
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float walkDelta = (float)distance * 2 * (float)(20 * delta);
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walkTimeN += walkDelta;
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swingN += (float)delta * 3;
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} else {
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swingN -= (float)delta * 3;
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}
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Utils.Clamp( ref swingN, 0, 1 );
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}
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const float armMax = 60 * Utils.Deg2Rad;
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const float legMax = 80 * Utils.Deg2Rad;
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const float idleMax = 3 * Utils.Deg2Rad;
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const float idleXPeriod = (float)(2 * Math.PI / 5.0f);
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const float idleZPeriod = (float)(2 * Math.PI / 3.5f);
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/// <summary> Calculates the interpolated state between the last and next animation state. </summary>
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public void GetCurrentAnimState( float t ) {
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swing = Utils.Lerp( swingO, swingN, t );
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walkTime = Utils.Lerp( walkTimeO, walkTimeN, t );
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float idleTime = (float)game.accumulator;
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float idleXRot = (float)(Math.Sin( idleTime * idleXPeriod ) * idleMax);
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float idleZRot = (float)(idleMax + Math.Cos(idleTime * idleZPeriod) * idleMax);
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armXRot = (float)(Math.Cos( walkTime ) * swing * armMax) - idleXRot;
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legXRot = -(float)(Math.Cos( walkTime ) * swing * legMax);
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armZRot = -idleZRot;
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bobYOffset = (float)(Math.Abs( Math.Cos( walkTime ) ) * swing * (2.5f/16f));
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tilt = (float)Math.Cos( walkTime ) * swing * (0.15f * Utils.Deg2Rad);
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if( entity.Model is HumanoidModel || entity.Model is ChibiModel )
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CalcHumanAnim( idleXRot, idleZRot );
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}
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void CalcHumanAnim( float idleXRot, float idleZRot ) {
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if( game.SimpleArmsAnim ) {
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leftXRot = armXRot; leftZRot = armZRot;
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rightXRot = -armXRot; rightZRot = -armZRot;
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} else {
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PerpendicularAnim( 0.23f, idleXRot, idleZRot, out leftXRot, out leftZRot );
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PerpendicularAnim( 0.28f, idleXRot, idleZRot, out rightXRot, out rightZRot );
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rightXRot = -rightXRot; rightZRot = -rightZRot;
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}
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}
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const float maxAngle = 110 * Utils.Deg2Rad;
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void PerpendicularAnim( float flapSpeed, float idleXRot, float idleZRot,
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out float xRot, out float zRot ) {
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float verAngle = (float)(0.5 + 0.5 * Math.Sin( walkTime * flapSpeed ) );
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zRot = -idleZRot - verAngle * swing * maxAngle;
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float horAngle = (float)(Math.Cos( walkTime ) * swing * armMax * 1.5f);
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xRot = idleXRot + horAngle;
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}
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}
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} |