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// -----------------------------------------------------------------------------
// File: compat.ss
// Description: glue-code for retro-compatibility with built-in items (legacy)
// Author: Alexandre Martins <http://opensurge2d.org>
// License: MIT
// -----------------------------------------------------------------------------
using SurgeEngine.Level;
using SurgeEngine.Vector2;
using SurgeEngine.Transform;
using SurgeEngine.Events.EntityEvent;
using SurgeEngine.Events.FunctionEvent;
object ".compat_loopgreen" is "private", "entity"
{
obj = spawn("Layer Green");
state "main"
{
}
fun constructor()
{
transform = obj.child("Transform") || obj.spawn("Transform");
transform.translateBy(16, 16);
}
}
object ".compat_loopyellow" is "private", "entity"
{
obj = spawn("Layer Yellow");
state "main"
{
}
fun constructor()
{
transform = obj.child("Transform") || obj.spawn("Transform");
transform.translateBy(16, 16);
}
}
object ".compat_perspikes" is "private", "entity"
{
spikes = spawn("Spikes");
state "main"
{
}
fun constructor()
{
spikes.periodic = true;
}
}
object ".compat_perceilspikes" is "private", "entity"
{
spikes = spawn("Spikes Down");
state "main"
{
}
fun constructor()
{
spikes.periodic = true;
}
}
object ".compat_switch" is "private", "entity"
{
obj = spawn("Switch");
transform = Transform();
state "main"
{
// get the closest entities
position = transform.position;
door = findClosestEntity("Door");
teleporter = findClosestEntity("Teleporter");
// configure the switch
if(door != null || teleporter != null) {
doorDistance = (door != null) ? position.distanceTo(entityPosition(door)) : Math.infinity;
teleporterDistance = (teleporter != null) ? position.distanceTo(entityPosition(teleporter)) : Math.infinity;
if(doorDistance < teleporterDistance) {
obj.sticky = false;
obj.onActivate = EntityEvent(door).willCall("open");
obj.onDeactivate = EntityEvent(door).willCall("close");
}
else {
obj.sticky = true;
obj.onActivate = EntityEvent(teleporter).willCall("teleport");
}
}
// done
state = "done";
}
state "done"
{
}
// you must ensure that entityName references objects tagged "entity"
fun findClosestEntity(entityName)
{
closestEntity = null;
closestDistance = Math.infinity;
position = transform.position;
entities = Level.findEntities(entityName);
foreach(entity in entities) {
distance = position.distanceTo(entityPosition(entity));
if(distance < closestDistance) {
closestEntity = entity;
closestDistance = distance;
}
}
return closestEntity;
}
// get the world position of an entity
fun entityPosition(entity)
{
entityTransform = entity.child("Transform") || entity.spawn("Transform");
return entityTransform.position;
}
}
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