#61 Render entities with rotations

This code didn't even error once, it just worked. Which is nice.

sharedPlugins/remoteMap/control.lua

@@ -69,7 +69,11 @@ function on_some_entity_created(event)
 		complain("wtf, on_some_entity_created has nil entity")
 		return
 	end
-	write_file(ent.name.." "..ent.position.x.." "..ent.position.y)
+	local entityData = ent.name..","..ent.position.x..","..ent.position.y
+	if ent.supports_direction then
+		entityData = entityData .. ",rot="..ent.direction
+	end
+	write_file(entityData)
 	--writeout_objects(ent.surface, {left_top={x=math.floor(ent.position.x), y=math.floor(ent.position.y)}, right_bottom={x=math.floor(ent.position.x)+1, y=math.floor(ent.position.y)+1}})
 
 	complain("on_some_entity_created: "..ent.name.." at "..ent.position.x..","..ent.position.y)
@@ -83,12 +87,12 @@ function on_some_entity_deleted(event)
 
 	-- we can't do this now, because the entity still exists at this point. instead, we schedule the writeout for the next tick
 	
-	local surface = ent.surface
-	local area = {left_top={x=math.floor(ent.position.x), y=math.floor(ent.position.y)}, right_bottom={x=math.floor(ent.position.x)+1, y=math.floor(ent.position.y)+1}}
+	--local surface = ent.surface
+	--local area = {left_top={x=math.floor(ent.position.x), y=math.floor(ent.position.y)}, right_bottom={x=math.floor(ent.position.x)+1, y=math.floor(ent.position.y)+1}}
 
 	--table.insert(todo_next_tick, function () writeout_objects(surface, area ) end)
 	write_file("deleted "..ent.position.x.." "..ent.position.y)
-	complain("on_some_entity_deleted: "..ent.name.." at "..ent.position.x..","..ent.position.y)
+	--complain("on_some_entity_deleted: "..ent.name.." at "..ent.position.x..","..ent.position.y)
 end
 
 script.on_event(defines.events.on_tick, on_tick)

sharedPlugins/remoteMap/index.js

@@ -57,8 +57,8 @@ class remoteMap {
 	scriptOutput(data){
 		if(data){
 			this.messageInterface(data);
-			// express-transport-belt -35.5 -14.5
-			data = data.split(" ");
+			// express-transport-belt,-35.5,-14.5,[...]
+			data = data.split(",");
 			if(data && data[0] == undefined){
 				console.log("empty: ");
 				console.log(data);
@@ -74,8 +74,15 @@ class remoteMap {
 						this.messageInterface("Deleted data "+xPos+", "+yPos);
 					}).catch((err)=>this.messageInterface(err));
 				} else {
+					let entity = {name};
+					for(let i = 3; i < data.length; i++){
+						if(data[i].includes("=")){
+							let kv = data[i].split("=");
+							entity[kv[0]] = kv[1];
+						}
+					}
 					// save this entity in the database
-					this.chunkMap.setEntity(xPos, yPos, {name}).then(data => {
+					this.chunkMap.setEntity(xPos, yPos, entity).then(data => {
 						this.messageInterface("Added "+name+" to data "+xPos+", "+yPos);
 					}).catch((err)=>this.messageInterface(err));
 				}

static/remoteMap.js

@@ -68,6 +68,14 @@ function requestMapDraw(){
 		}
 	}
 }
+function drawImage(ctx, image, x, y, w, h, degrees){
+	ctx.save();
+	ctx.translate(x+w/2, y+h/2);
+	ctx.rotate(degrees*Math.PI/180.0);
+	ctx.translate(-x-w/2, -y-h/2);
+	ctx.drawImage(image, x, y, w, h);
+	ctx.restore();
+}
 function drawEntity(entity){
 	if(entity.x && entity.y){
 		if(entity.entity && entity.entity.name && typeof entity.entity.name == "string"){
@@ -93,7 +101,12 @@ function drawEntity(entity){
 						let name = entity.entity.name;
 						let xPos = (entity.x * 16) - playerPosition.x;
 						let yPos = (entity.y * 16) - playerPosition.y;
-						ctx.drawImage(entityImages[name].img, xPos, yPos, 16, 16);
+						let rotation = 0;
+						if(entity.entity.rot && !isNaN(Number(entity.entity.rot))){
+							rotation = entity.entity.rot * 45;
+						}
+						
+						drawImage(ctx, entityImages[name].img, xPos, yPos, 16, 16, rotation);
 						console.log("Drawing "+name+" at X: "+xPos+", Y: "+yPos);
 					} else {
 						this.queue.push(entity);