uberpong/dev/lib/weltmeister/undo.js

234 lines
4.9 KiB
JavaScript
Raw Normal View History

ig.module(
'weltmeister.undo'
)
.requires(
'weltmeister.config'
)
2012-06-22 17:26:53 +02:00
.defines(function(){ "use strict";
wm.Undo = ig.Class.extend({
levels: 10,
chain: [],
rpos: 0,
currentAction: null,
init: function( levels ) {
this.levels = levels || 10;
},
clear: function() {
this.chain = [];
this.currentAction = null;
},
commit: function( action ) {
if( this.rpos ) {
this.chain.splice( this.chain.length - this.rpos, this.rpos );
this.rpos = 0;
}
action.activeLayer = ig.game.activeLayer ? ig.game.activeLayer.name : '';
this.chain.push( action );
if( this.chain.length > this.levels ) {
this.chain.shift();
}
},
undo: function() {
var action = this.chain[ this.chain.length - this.rpos - 1 ];
if( !action ) {
return;
}
this.rpos++;
ig.game.setActiveLayer( action.activeLayer );
if( action.type == wm.Undo.MAP_DRAW ) {
for( var i = 0; i < action.changes.length; i++ ) {
var change = action.changes[i];
change.layer.setTile( change.x, change.y, change.old );
}
}
else if( action.type == wm.Undo.ENTITY_EDIT ) {
action.entity.pos.x = action.old.x;
action.entity.pos.y = action.old.y;
action.entity.size.x = action.old.w;
action.entity.size.y = action.old.h;
ig.game.entities.selectEntity( action.entity );
ig.game.entities.loadEntitySettings();
}
else if( action.type == wm.Undo.ENTITY_CREATE ) {
ig.game.entities.removeEntity( action.entity );
ig.game.entities.selectEntity( null );
}
else if( action.type == wm.Undo.ENTITY_DELETE ) {
ig.game.entities.entities.push( action.entity );
if( action.entity.name ) {
this.namedEntities[action.entity.name] = action.entity;
}
ig.game.entities.selectEntity( action.entity );
}
ig.game.setModified();
},
redo: function() {
if( !this.rpos ) {
return;
}
var action = this.chain[ this.chain.length - this.rpos ];
if( !action ) {
return;
}
this.rpos--;
ig.game.setActiveLayer( action.activeLayer );
if( action.type == wm.Undo.MAP_DRAW ) {
for( var i = 0; i < action.changes.length; i++ ) {
var change = action.changes[i];
change.layer.setTile( change.x, change.y, change.current );
}
}
else if( action.type == wm.Undo.ENTITY_EDIT ) {
action.entity.pos.x = action.current.x;
action.entity.pos.y = action.current.y;
action.entity.size.x = action.current.w;
action.entity.size.y = action.current.h;
ig.game.entities.selectEntity( action.entity );
ig.game.entities.loadEntitySettings();
}
else if( action.type == wm.Undo.ENTITY_CREATE ) {
ig.game.entities.entities.push( action.entity );
if( action.entity.name ) {
this.namedEntities[action.entity.name] = action.entity;
}
ig.game.entities.selectEntity( action.entity );
}
else if( action.type == wm.Undo.ENTITY_DELETE ) {
ig.game.entities.removeEntity( action.entity );
ig.game.entities.selectEntity( null );
}
ig.game.setModified();
},
// -------------------------------------------------------------------------
// Map changes
beginMapDraw: function( layer ) {
this.currentAction = {
type: wm.Undo.MAP_DRAW,
time: Date.now(),
changes: []
};
},
pushMapDraw: function( layer, x, y, oldTile, currentTile ) {
if( !this.currentAction ) {
return;
}
this.currentAction.changes.push({
layer: layer,
x: x,
y: y,
old: oldTile,
current: currentTile
});
},
endMapDraw: function() {
if( !this.currentAction || !this.currentAction.changes.length ) {
return;
}
this.commit( this.currentAction );
this.currentAction = null;
},
// -------------------------------------------------------------------------
// Entity changes
beginEntityEdit: function( entity ) {
this.currentAction = {
type: wm.Undo.ENTITY_EDIT,
time: Date.now(),
entity: entity,
old: {
x: entity.pos.x,
y: entity.pos.y,
w: entity.size.x,
h: entity.size.y
},
current: {
x: entity.pos.x,
y: entity.pos.y,
w: entity.size.x,
h: entity.size.y
}
};
},
pushEntityEdit: function( entity ) {
if( !this.currentAction ) {
return;
}
this.currentAction.current = {
x: entity.pos.x,
y: entity.pos.y,
w: entity.size.x,
h: entity.size.y
};
},
endEntityEdit: function() {
var a = this.currentAction;
if( !a || (
a.old.x == a.current.x && a.old.y == a.current.y &&
a.old.w == a.current.w && a.old.h == a.current.h
)) {
return;
}
this.commit( this.currentAction );
this.currentAction = null;
},
commitEntityCreate: function( entity ) {
this.commit({
type: wm.Undo.ENTITY_CREATE,
time: Date.now(),
entity: entity
});
},
commitEntityDelete: function( entity ) {
this.commit({
type: wm.Undo.ENTITY_DELETE,
time: Date.now(),
entity: entity
});
}
});
wm.Undo.MAP_DRAW = 1;
wm.Undo.ENTITY_EDIT = 2;
wm.Undo.ENTITY_CREATE = 3;
wm.Undo.ENTITY_DELETE = 4;
});