#include "road_chunk.h"
#include "road_segment.h"
#include "intersection.h"
#include "vehicle.h"
#include "road_chunk_list.h"

void initSimulation(RoadChunkList& cityMap);

// * Main program contents:
// *   - Major program variables that persist throughout execution
// *   - Event loop that processes GP142 events,
// *     and updates variables and redraws the window as needed.  until the user quits
//
int main() {

	// Event handling and menu items:  
	bool quit = false;		// = "user has selected quit"				 
	char keyPressed;		// last keyboard character from key event	 
	int  mouseX, mouseY;	// x and y coordinates of latest mouse event 
	
	GP142Display display;		// our GP142 window
		
	display.clear (White);
	display.setAnimation (Run);
	
	RoadChunkList cityMap;

	initSimulation(cityMap);

	//
	// * Main event loop:
	// * ---- ----- -----
	// * Wait for the next user action, decode it, and call an
	// * appropriate function to handle it.  Repeat until the
	// * user selects quit.
	//	  
	while (!quit) {
			
		// perform appropriate action depending on kind of event  
		switch (display.getNextEvent(mouseX, mouseY, keyPressed)) {
		case Quit:
			// Quit selected  
			quit = true;
			break;
			
		case Mouse:
			// Mouse click.  Not used in simulation
			break;

		case Periodic:
			// Handle timer tick: update all simulation objects.
			cityMap.tick();
			break;

		default:
			// all other events we do not need to process
			break;
			
		}  
		
		// Redraw everything... just the menu for now
		cityMap.draw(display);
	}
	
	return 0;
}

void initSimulation(RoadChunkList& cityMap) {
	Intersection *isec1, *isec2, *isec3, *isec4;
	RoadSegment *rs1, *rs2, *rs3, *rs4, *rs5, *rs6;
	isec1 = new Intersection(Position(0,0));
	isec2 = new Intersection(Position(0,100));
	isec3 = new Intersection(Position(0,200));
	isec4 = new Intersection(Position(-100,100));
	rs1 = new RoadSegment();
	rs2 = new RoadSegment();
	rs3 = new RoadSegment();
	rs4 = new RoadSegment();
	rs5 = new RoadSegment();
	rs6 = new RoadSegment();
	isec1->connectRoad(rs1, North, Exit);
	isec1->connectRoad(rs3, North, Entry);
	isec2->connectRoad(rs1, South, Entry);
	isec2->connectRoad(rs3, South, Exit);
	isec2->connectRoad(rs2, North, Exit);
	isec2->connectRoad(rs4, North, Entry);
	isec3->connectRoad(rs2, South, Entry);
	isec3->connectRoad(rs4, South, Exit);
	isec4->connectRoad(rs5, East, Exit);
	isec4->connectRoad(rs6, East, Entry);
	isec2->connectRoad(rs5, West, Entry);
	isec2->connectRoad(rs6, West, Exit);


	cityMap.addRoadChunk(rs1);
	cityMap.addRoadChunk(rs2);
	cityMap.addRoadChunk(rs3);
	cityMap.addRoadChunk(rs4);
	cityMap.addRoadChunk(rs5);
	cityMap.addRoadChunk(rs6);
	cityMap.addRoadChunk(isec1);
	cityMap.addRoadChunk(isec2);
	cityMap.addRoadChunk(isec3);
	cityMap.addRoadChunk(isec4);

	rs1->enqueue(new Vehicle);
	rs3->enqueue(new Vehicle);
	rs5->enqueue(new Vehicle);
	rs6->enqueue(new Vehicle);
}