Improved walking system.

Screeps/StructureSpawnClass.js

@@ -0,0 +1,64 @@
+module.exports = {
+	setup: function () { StructureSpawn.prototype = _StructureSpawn.prototype; }
+}
+
+class _StructureSpawn extends StructureSpawn {	
+	begin(){
+		if (!this.memory.creepCounter) this.memory.creepCounter = 0;
+		this.memory.init = true;
+    }
+    
+    tick(){
+		if(!this.memory.init) this.begin();
+		if(Game.time%100) return;
+		if(this.room.energyAvailable < 300) return;
+		const job = this.room.memory.vacancies.pop();
+		if(job){
+			const name = getJobName(job.role);
+			const body = getBodyByJob(job.role, this.room.energyAvailable);
+			if(this.createCreep(job, name, body) != OK) this.room.memory.vacancies.push(job);
+		}
+    }
+
+	createCreep(job, name, body) {
+		const response = this.spawnCreep(body, name + ": " + this.memory.creepCounter, {
+			memory: { job: job }
+		});
+		if (response == OK) this.memory.creepCounter++;
+		return response;
+	}
+}
+
+function getJobName(role){
+	switch (role) {
+		case Role.BUILDER: return "Bob";
+		case Role.MINER: return "minny";
+		case Role.SUPPLIER: return "Sully";
+		case Role.UPGRADER: return "Uppa";
+	}
+}
+
+function getBodyByJob(role, energyAvailability){
+	const body = [];
+	switch (role) { 
+		case Role.BUILDER: body.push(WORK); energyAvailability -= 100;  break;
+		case Role.UPGRADER: body.push(CARRY); body.push(MOVE); energyAvailability -= 100; break;
+		case Role.MINER: body.push(MOVE); energyAvailability -= 100; break;
+	}
+	
+	var unitEnergyCost = 0;
+	while(unitEnergyCost <= energyAvailability) {
+		switch (role) {
+			case Role.BUILDER: body.push(MOVE); body.push(CARRY); unitEnergyCost = 100;  break;
+			case Role.UPGRADER:
+			case Role.MINER:
+				body.push(WORK);  unitEnergyCost = 100;
+			 	if(role === Role.MINER && body.length > 5) energyAvailability = -1; 
+				break;
+			case Role.SUPPLIER: body.push(CARRY); body.push(MOVE); unitEnergyCost = 100;  break;
+			default: energyAvailability = -1; break;
+		}
+		energyAvailability -= unitEnergyCost;
+	}
+	return body;
+}