205 lines
7.2 KiB
C#
205 lines
7.2 KiB
C#
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using System;
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using System.Collections.Generic;
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using System.Drawing;
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using System.Numerics;
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using SDL2;
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using SkinnerBox.Entities;
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using SlatedGameToolkit.Framework.AssetSystem;
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using SlatedGameToolkit.Framework.Graphics.Render;
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using SlatedGameToolkit.Framework.Graphics.Textures;
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using SlatedGameToolkit.Framework.Graphics.Window;
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using SlatedGameToolkit.Framework.Input.Devices;
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using SlatedGameToolkit.Framework.StateSystem;
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using SlatedGameToolkit.Framework.StateSystem.States;
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using SlatedGameToolkit.Framework.Utilities.Collections.Pooling;
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namespace SkinnerBox.States.Gameplay
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{
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public class GamePlayState : IState
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{
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private MeshBatchRenderer renderer;
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private AssetManager assets;
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private StateManager stateManager;
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private Random random;
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//Cursor information
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private float widthFactor, heightFactor;
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private float leftXPos; //Last left click position
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//Entities
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private ServerEntity server;
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private ObjectPool<WarningEntity> warningPool;
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private List<WarningEntity> activeWarnings = new List<WarningEntity>();
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private ObjectPool<PacketEntity> packetPool;
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private List<PacketEntity> activePackets = new List<PacketEntity>();
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private SpawnInfo packetSpawnInfo;
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public GamePlayState(MeshBatchRenderer renderer, AssetManager asset)
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{
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this.assets = asset;
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this.renderer = renderer;
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packetPool = new ObjectPool<PacketEntity>(CreatePacket);
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warningPool = new ObjectPool<WarningEntity>(createWarning);
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}
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public bool Activate()
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{
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Keyboard.keyboardUpdateEvent += KeyInputListener;
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Mouse.mouseUpdateEvent += MouseInput;
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leftXPos = 0.5f * Game.WIDTH_UNITS;
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server = new ServerEntity((Texture)assets["serverunit.png"], leftXPos, 0.1f);
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random = new Random();
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packetSpawnInfo = new SpawnInfo(2, 1, (float)(random.NextDouble() * Game.WIDTH_UNITS), 1f, 0.2f);
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return true;
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}
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public PacketEntity CreatePacket() {
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return new PacketEntity((Texture)assets["packet.png"]);
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}
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public WarningEntity createWarning() {
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return new WarningEntity((Texture)assets["warning.png"]);
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}
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public bool Deactivate()
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{
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Keyboard.keyboardUpdateEvent -= KeyInputListener;
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Mouse.mouseUpdateEvent -= MouseInput;
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return true;
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}
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public void Deinitialize()
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{
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}
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public string getName()
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{
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return "GamePlayState";
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}
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public void Initialize(StateManager manager)
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{
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this.stateManager = manager;
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int vw, vh, vx, vy;
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WindowContextsManager.CurrentGL.GetViewport(out vx, out vy, out vw, out vh);
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CalculateScaleFactors(vw, vh);
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}
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public void Render(double delta)
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{
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renderer.Begin(Matrix4x4.Identity, delta);
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foreach (WarningEntity warn in activeWarnings)
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{
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renderer.Draw(warn);
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}
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foreach (PacketEntity packet in activePackets)
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{
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renderer.Draw(packet);
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}
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renderer.Draw(server);
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renderer.End();
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}
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public void Update(double timeStep)
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{
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#region ServerUpdate
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if (Mouse.LeftButtonPressed) {
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leftXPos = widthFactor * Mouse.X;
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}
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if (leftXPos < server.CenterX)
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{
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server.CenterX -= ((float)timeStep * server.Speed);
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if (server.CenterX < leftXPos) server.CenterX = leftXPos;
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} else if (leftXPos > server.CenterX)
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{
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server.CenterX += ((float)timeStep * server.Speed);
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if (server.X > leftXPos) server.CenterX = leftXPos;
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}
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#endregion
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#region PacketUpdate
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packetSpawnInfo.timeElapsed += (float) timeStep;
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if (packetSpawnInfo.timeElapsed >= packetSpawnInfo.period) {
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packetSpawnInfo.timeElapsed = 0;
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//do spawning
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for(int i = 0; i < packetSpawnInfo.perSpawn; i++) {
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PacketEntity packet = packetPool.Retrieve();
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packet.CenterX = packetSpawnInfo.batchLocation;
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packet.Y = i * packet.Height + packetSpawnInfo.distanceBetween + Game.HEIGHT_UNITS + packetSpawnInfo.speed * (2/3f);
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packet.velocity = packetSpawnInfo.speed;
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packet.Color = Color.Blue;
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activePackets.Add(packet);
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}
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//Spawn Warning
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WarningEntity warning = warningPool.Retrieve();
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warning.CenterX = packetSpawnInfo.batchLocation;
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warning.LifeTime = packetSpawnInfo.period * (2/3f);
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warning.Y = Game.HEIGHT_UNITS - warning.Height;
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activeWarnings.Add(warning);
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//Prepare next batch
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packetSpawnInfo.batchLocation = (float)(random.NextDouble() * Game.WIDTH_UNITS);
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}
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for (int i = 0; i < activePackets.Count; i++)
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{
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PacketEntity packet = activePackets[i];
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packet.Update(timeStep);
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if (packet.HitBox.IntersectsWith(server.HitBox) && packet.velocity > 0) {
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packet.velocity *= -2f;
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packet.Color = Color.Cyan;
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}
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if (packet.Y <= 0 - packet.Height) {
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packetPool.Release(packet);
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activePackets.RemoveAt(i);
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i--;
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continue;
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}
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if (packet.Y >= Game.HEIGHT_UNITS && packet.velocity < 0) {
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packetPool.Release(packet);
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activePackets.RemoveAt(i);
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i--;
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}
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}
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#endregion
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#region WarningCleanup
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for (int i = 0; i < activeWarnings.Count; i++)
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{
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WarningEntity warn = activeWarnings[i];
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warn.aliveTime.Value += (float) timeStep;
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if (warn.aliveTime.Value >= warn.LifeTime) {
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warningPool.Release(warn);
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activeWarnings.RemoveAt(i);
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i--;
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}
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}
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#endregion
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}
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public void KeyInputListener(SDL.SDL_Keycode keycode, bool down) {
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}
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public void MouseInput(bool leftDown, bool rightDown, bool middle, int x, int y, int scrollX, int scrollY) {
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}
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public void WindowResize(int width, int height) {
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WindowContextsManager.CurrentWindowContext.GetDrawableDimensions();
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int vw, vh, vx, vy;
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WindowContextsManager.CurrentGL.GetViewport(out vx, out vy, out vw, out vh);
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CalculateScaleFactors(vw, vh);
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}
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private void CalculateScaleFactors(float width, float height) {
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this.widthFactor = Game.WIDTH_UNITS * (1f / width);
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this.heightFactor = Game.HEIGHT_UNITS * (1f / height);
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}
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}
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}
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