106 lines
3.1 KiB
Java
106 lines
3.1 KiB
Java
package mindustry.entities.comp;
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import arc.math.*;
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import arc.util.*;
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import mindustry.*;
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import mindustry.annotations.Annotations.*;
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import mindustry.content.*;
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import mindustry.entities.*;
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import mindustry.gen.*;
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import mindustry.type.*;
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import mindustry.world.blocks.environment.*;
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@Component
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abstract class LegsComp implements Posc, Rotc, Hitboxc, Flyingc, Unitc{
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@Import float x, y, elevation;
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@Import UnitType type;
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transient Leg[] legs = {};
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transient float totalLength;
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transient int lastGroup;
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@Override
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public void update(){
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//keep elevation halfway
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elevation = 0.5f;
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int count = type.legCount;
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float legLength = type.legLength;
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float rotation = vel().angle();
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//set up initial leg positions
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if(legs.length != type.legCount){
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this.legs = new Leg[count];
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float spacing = 360f / count;
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for(int i = 0; i < legs.length; i++){
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Leg l = new Leg();
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l.joint.trns(i * spacing + rotation, legLength/2f).add(x, y);
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l.base.trns(i * spacing + rotation, legLength).add(x, y);
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legs[i] = l;
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}
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}
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float moveSpeed = type.legSpeed;
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int div = Math.max(legs.length / 2, 2);
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float moveSpace = legLength / 1.6f / (div / 2f);
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totalLength += Mathf.dst(deltaX(), deltaY());
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int stage = (int)(totalLength / moveSpace);
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int group = stage % div;
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if(lastGroup != group){
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//create ripple effects when switching leg groups
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int i = 0;
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for(Leg l : legs){
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if(i++ % div == lastGroup){
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Floor floor = Vars.world.floorWorld(l.base.x, l.base.y);
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if(floor.isLiquid){
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floor.walkEffect.at(l.base.x, l.base.y, 0, floor.mapColor);
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}else{
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Fx.unitLandSmall.at(l.base.x, l.base.y, 0.5f, floor.mapColor);
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}
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//shake when legs contact ground
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if(type.landShake > 0){
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Effects.shake(type.landShake, type.landShake, this);
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}
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}
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}
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lastGroup = group;
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}
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float movespace = 360f / legs.length / 4f;
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float trns = vel().len() * 12.5f * div/1.5f * type.legTrns;
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Tmp.v4.trns(rotation, trns);
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for(int i = 0; i < legs.length; i++){
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float dstRot = rotation + 360f / legs.length * i + (360f / legs.length / 2f);
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float rot2 = Angles.moveToward(dstRot, rotation + (Angles.angleDist(dstRot, rotation) < 90f ? 180f : 0), movespace);
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Leg l = legs[i];
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Tmp.v1.trns(dstRot, legLength).add(x, y).add(Tmp.v4);
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Tmp.v2.trns(rot2, legLength / 2f).add(x, y).add(Tmp.v4);
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if(i % div == group){
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l.base.lerpDelta(Tmp.v1, moveSpeed);
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l.joint.lerpDelta(Tmp.v2, moveSpeed / 4f);
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}
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l.joint.lerpDelta(Tmp.v2, moveSpeed / 4f);
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}
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}
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@Override
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public void add(){
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elevation = 0.5f;
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}
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}
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