topical media & game development
game-xna-intro-XnaShooter-Game-Player.cs / cs
// Project: XnaShooter, File: Player.cs
// Namespace: XnaShooter.Game, Class: Player
// Path: C:\code\XnaShooter\Game, Author: Abi
// Code lines: 182, Size of file: 5,41 KB
// Creation date: 02.10.2006 01:33
// Last modified: 27.10.2006 02:40
// Generated with Commenter by abi.exDream.com
#region Using directives
using System;
using System.Collections.Generic;
using System.Text;
using XnaShooter.GameScreens;
using Microsoft.Xna.Framework;
using XnaShooter.Helpers;
using Microsoft.Xna.Framework.Input;
using XnaShooter.Properties;
using XnaShooter.Graphics;
using XnaShooter.Sounds;
#endregion
namespace XnaShooter.Game
{
<summary>
Player helper class, holds all the current game properties:
Health, Weapon and
Score.
Note: This is a static class and holds always all player entries
for the current game. If we would have more than 1 player (e.g.
in multiplayer mode) this should not be a static class!
</summary>
static class Player
{
#region Variables
<summary>
Current game time in ms. Used for time display in game. Also used to
update the level position.
</summary>
public static float
gameTimeMs = 0;
<summary>
Won or lost?
</summary>
public static bool victory = false;
<summary>
Game over?
</summary>
private static bool
gameOver = false;
<summary>
Is game over?
</summary>
<returns>Bool
</returns>
public static bool GameOver
{
get
{
return
gameOver;
} // get
} // GameOver
<summary>
Remember if we already uploaded our highscore for this game.
Don't do this twice (e.g. when pressing esc).
</summary>
static bool alreadyUploadedHighscore = false;
<summary>
Set game over and upload highscore
</summary>
public static void SetGameOverAndUploadHighscore()
{
// Set lifes to 0 and set
gameOver to true to mark this game as ended.
gameOver = true;
// Upload highscore
if (alreadyUploadedHighscore == false)
{
alreadyUploadedHighscore = true;
Highscores.SubmitHighscore(score, Highscores.DefaultLevelName);
} // if (alreadyUploadedHighscore)
} // SetGameOverAndUploadHighscore()
#endregion
#region Current player values (health, weapon, etc.)
<summary>
Health, 1 means we have 100% health, everything below means we
are damaged. If we reach 0, we die!
</summary>
public static float health = 1.0f;
<summary>
Weapon types we can carry with our ship
</summary>
public enum WeaponTypes
{
MG,
Plasma,
Gattling,
Rockets,
} // enum WeaponTypes
<summary>
Weapon we currently have, each weapon is replaced by the
last collected one. No ammunition is used.
</summary>
public static WeaponTypes currentWeapon = WeaponTypes.MG;
<summary>
Do we have the EMP bomb? Press space to fire them.
</summary>
public static int empBombs = 0;
<summary>
Position where EMP was fired!
</summary>
public static Vector3 empPosition = Vector3.Zero;
<summary>
After firing the EMP bomb will deploy over the screen in about 1 sec.
</summary>
public static float empBombTimeout = 0;
<summary>
Time for an EMP bomb to explode everything on screen.
</summary>
const int MaxEmpTimeout = 1000;
<summary>
Current score. Used as highscore if game is over.
</summary>
public static int score = 0;
/*unused
<summary>
Max. value for camera wobbel timeout.
</summary>
public const int MaxCameraWobbelTimeoutMs = 700;
/*unused
<summary>
Camera wobbel timeout.
Used to shake camera after colliding or nearly hitting asteroids.
</summary>
public static float cameraWobbelTimeoutMs = 0;
<summary>
Camera wobbel factor.
</summary>
public static float cameraWobbelFactor = 1.0f;
<summary>
Set camera wobbel
</summary>
<param name="factor">Factor
</param>
public static void SetCameraWobbel(float wobbelFactor)
{
cameraWobbelTimeoutMs = (int)
//((0.75f + 0.5f * wobbelFactor) *
(MaxCameraWobbelTimeoutMs);
cameraWobbelFactor = wobbelFactor;
} // SetCameraWobbel(wobbelFactor)
<summary>
Movement speed per second, used in SpaceCamera class.
500 means we will move up to 5 sectors a second, which is really fast.
</summary>
public const float MovementSpeedPerSecond = 88;//111;//1234;//500.0f;// 500.0f;
<summary>
Max values for x,y position (positive or negative)
</summary>
public const float MaxXPosition = 28.25f,
MaxYPosition = 26.75f;
<summary>
Our current ship position.
</summary>
public static Vector2 position = new Vector2(0, -MaxYPosition);
<summary>
Ship rotation in x and y directions to make it look cooler.
</summary>
public static Vector2 shipRotation = new Vector2(0, 0);
<summary>
Ship position in 3d, updated each frame in Mission.RenderLandscapeObjects
</summary>
public static Vector3 shipPos = new Vector3(0, 0, 0);
<summary>
Shoot number, will be increased each time we shoot.
</summary>
public static int shootNum = 0;
<summary>
Remember the last time we shoot to allow instant shooting when clicking.
</summary>
private static float lastShootTimeMs = -500;
#endregion
#region Reset everything for starting a new game
<summary>
Keys for moving around. Assigned from settings!
</summary>
static Keys moveLeftKey,
moveRightKey,
moveUpKey,
moveDownKey;
<summary>
Default to normal mouse sensibility, can be changed
from 0.5 to 2.0.
</summary>
static float mouseSensibility = 1.0f;
<summary>
Reset all player entries for restarting a game.
</summary>
public static void Reset()
{
gameOver = false;
alreadyUploadedHighscore = false;
gameTimeMs = 0;
health = 1.0f;
score = 0;
//unused: cameraWobbelTimeoutMs = 0;
lastShootTimeMs = -500;
// Assign keys. Warning: This is VERY slow, never use it
// inside any render loop (getting Settings, etc.)!
moveLeftKey = GameSettings.Default.MoveLeftKey;
moveRightKey = GameSettings.Default.MoveRightKey;
moveUpKey = GameSettings.Default.MoveForwardKey;
moveDownKey = GameSettings.Default.MoveBackwardKey;
// Also assign mouse sensibility
mouseSensibility = 2.5f -
2.0f * GameSettings.Default.ControllerSensibility;
if (mouseSensibility < 0.5f)
mouseSensibility = 0.5f;
} // Reset(setLevelName)
#endregion
#region Handle game logic
<summary>
Handle game logic
</summary>
public static void HandleGameLogic(Mission mission)
{
//tst: if (Input.KeyboardF1JustPressed)
//
gameOver = true;
// Don't handle any more game logic if game is over.
if (Player.GameOver)
{
if (victory)
{
// Display Victory message
TextureFont.WriteTextCentered(
BaseGame.Width / 2, BaseGame.Height / 3,
"Victory! You won.");
TextureFont.WriteTextCentered(
BaseGame.Width / 2, BaseGame.Height / 3 + 40,
"Your Highscore: " + Player.score +
" (#" + Highscores.GetRankFromCurrentScore(Player.score) + ")");
} // if
else
{
// Display game over message
TextureFont.WriteTextCentered(
BaseGame.Width / 2, BaseGame.Height / 3,
"Game Over! You lost.");
TextureFont.WriteTextCentered(
BaseGame.Width / 2, BaseGame.Height / 3 + 40,
"Your Highscore: " + Player.score +
" (#" + Highscores.GetRankFromCurrentScore(Player.score) + ")");
} // else
return;
} // if
// Increase game time
gameTimeMs += BaseGame.ElapsedTimeThisFrameInMs;
// Control our ship position with the keyboard or gamepad.
// Use keyboard cursor keys and the left thumb stick. The
// right hand is used for fireing (ctrl, space, a, b).
Vector2 lastPosition = position;
Vector2 lastRotation = shipRotation;
float moveFactor = mouseSensibility *
MovementSpeedPerSecond * BaseGame.MoveFactorPerSecond;
// Left/Right
if (Input.Keyboard.IsKeyDown(moveLeftKey) ||
Input.Keyboard.IsKeyDown(Keys.Left) ||
Input.Keyboard.IsKeyDown(Keys.NumPad4) ||
Input.GamePad.DPad.Left == ButtonState.Pressed)
{
position.X -= moveFactor;
} // if
if (Input.Keyboard.IsKeyDown(moveRightKey) ||
Input.Keyboard.IsKeyDown(Keys.Right) ||
Input.Keyboard.IsKeyDown(Keys.NumPad6) ||
Input.GamePad.DPad.Right == ButtonState.Pressed)
{
position.X += moveFactor;
} // if
if (Input.GamePad.ThumbSticks.Left.X != 0.0f)
{
position.X += Input.GamePad.ThumbSticks.Left.X;// *0.75f;
} // if
// Down/Up
if (Input.Keyboard.IsKeyDown(moveDownKey) ||
Input.Keyboard.IsKeyDown(Keys.Down) ||
Input.Keyboard.IsKeyDown(Keys.NumPad2) ||
Input.GamePad.DPad.Down == ButtonState.Pressed)
{
position.Y -= moveFactor;
} // if
if (Input.Keyboard.IsKeyDown(moveUpKey) ||
Input.Keyboard.IsKeyDown(Keys.Up) ||
Input.Keyboard.IsKeyDown(Keys.NumPad8) ||
Input.GamePad.DPad.Up == ButtonState.Pressed)
{
position.Y += moveFactor;
} // if
if (Input.GamePad.ThumbSticks.Left.Y != 0.0f)
{
position.Y += Input.GamePad.ThumbSticks.Left.Y;// *0.75f;
} // if
// Keep position in bounds
if (position.X < -MaxXPosition)
position.X = -MaxXPosition;
if (position.X > MaxXPosition)
position.X = MaxXPosition;
if (position.Y < -MaxYPosition)
position.Y = -MaxYPosition;
if (position.Y > MaxYPosition)
position.Y = MaxYPosition;
// Calculate ship rotation based on the current movement
if (lastPosition.X > position.X)
shipRotation.X = -0.5f;
else if (lastPosition.X < position.X)
shipRotation.X = +0.5f;
else
shipRotation.X = 0;
if (lastPosition.Y > position.Y)
shipRotation.Y = +0.53f;
else if (lastPosition.Y < position.Y)
shipRotation.Y = -0.33f;
else
shipRotation.Y = 0;
shipRotation = lastRotation * 0.95f + shipRotation * 0.05f;
// Fire?
if (Input.GamePadAPressed ||
Input.GamePad.Triggers.Right > 0.5f ||
Input.Keyboard.IsKeyDown(Keys.LeftControl) ||
Input.Keyboard.IsKeyDown(Keys.RightControl))
{
switch (currentWeapon)
{
case WeaponTypes.MG:
if (gameTimeMs - lastShootTimeMs >= 150)
{
bool hitUnit = false;
Vector3 enemyUnitPos = new Vector3(0, 100000, 0);
// Hit enemy units, check all of them
for (int num = 0; num < Mission.units.Count; num++)
{
Unit enemyUnit = Mission.units[num];
// Near enough to enemy ship?
if (Math.Abs(enemyUnit.position.X - shipPos.X) < 5.0f &&
enemyUnit.position.Y > shipPos.Y &&
(enemyUnit.position.Y - shipPos.Y) < 60)
{
// Hit and do damage!
if (enemyUnit.position.Y < enemyUnitPos.Y)
enemyUnitPos = new Vector3(enemyUnit.position, Mission.AllShipsZHeight);
hitUnit = true;
Player.score += (int)enemyUnit.hitpoints / 10;
enemyUnit.hitpoints -= 150; // do about 1000 damage/sec
} // if
} // for
Vector3 shootPos = shipPos + new Vector3(-1.2f, 0, 0);
EffectManager.AddMgEffect(shootPos,
hitUnit ? enemyUnitPos : shootPos + new Vector3(0, 100, 0),
0, 2, hitUnit, true);//shootNum % 2 == 0);
shootPos = shipPos + new Vector3(+1.2f, 0, 0);
EffectManager.AddMgEffect(shootPos,
hitUnit ? enemyUnitPos : shootPos + new Vector3(0, 100, 0),
1, 3, hitUnit, false);
shootNum++;
lastShootTimeMs = gameTimeMs;
Input.GamePadRumble(0.015f, 0.125f);
Player.score += 1;
} // if
else
{
Vector3 shootPos = shipPos + new Vector3(-1.2f, 0, 0);
EffectManager.UpdateMgEffect(shootPos, 0);
shootPos = shipPos + new Vector3(+1.2f, 0, 0);
EffectManager.UpdateMgEffect(shootPos, 1);
} // else
break;
case WeaponTypes.Plasma:
if (gameTimeMs - lastShootTimeMs >= 250)
{
Vector3 shootPos = shipPos +
new Vector3(shootNum % 2 == 0 ? -2.4f : +2.4f, 0, 0);
Mission.AddWeaponProjectile(
Projectile.WeaponTypes.Plasma, shootPos, true);
EffectManager.AddFireFlash(shootPos);
EffectManager.PlaySoundEffect(
EffectManager.EffectSoundType.PlasmaShoot);
shootNum++;
lastShootTimeMs = gameTimeMs;
Input.GamePadRumble(0.05f, 0.175f);
Player.score += 5;
} // if
break;
case WeaponTypes.Gattling:
if (gameTimeMs - lastShootTimeMs >= 100)
{
bool hitUnit = false;
Vector3 enemyUnitPos = new Vector3(0, 100000, 0);
// Hit enemy units, check all of them
for (int num = 0; num < Mission.units.Count; num++)
{
Unit enemyUnit = Mission.units[num];
// Near enough to enemy ship?
if (Math.Abs(enemyUnit.position.X - shipPos.X) < 5.0f &&
enemyUnit.position.Y > shipPos.Y &&
(enemyUnit.position.Y - shipPos.Y) < 60)
{
// Hit and do damage!
if (enemyUnit.position.Y < enemyUnitPos.Y)
enemyUnitPos = new Vector3(enemyUnit.position, Mission.AllShipsZHeight);
hitUnit = true;
Player.score += (int)enemyUnit.hitpoints / 10;
enemyUnit.hitpoints -= 175; // do about 1750 damage/sec
} // if
} // for
Vector3 shootPos = shipPos + new Vector3(-1.2f, 0, 0);
EffectManager.AddGattlingEffect(shootPos,
hitUnit ? enemyUnitPos : shootPos + new Vector3(0, 100, 0),
0, 2, hitUnit, shootNum % 2 == 0);
shootPos = shipPos + new Vector3(+1.2f, 0, 0);
EffectManager.AddGattlingEffect(shootPos,
hitUnit ? enemyUnitPos : shootPos + new Vector3(0, 100, 0),
1, 3, hitUnit, false);
if (RandomHelper.GetRandomInt(2) == 0)
{
shootPos = shipPos + new Vector3(-2.54f, 0, 0);
EffectManager.AddGattlingEffect(shootPos,
hitUnit ? enemyUnitPos : shootPos + new Vector3(0, 100, 0),
4, 2, hitUnit, false);
shootPos = shipPos + new Vector3(+2.54f, 0, 0);
EffectManager.AddGattlingEffect(shootPos,
hitUnit ? enemyUnitPos : shootPos + new Vector3(0, 100, 0),
5, 2, hitUnit, false);
} // if
shootNum++;
lastShootTimeMs = gameTimeMs;
Input.GamePadRumble(0.05f, 0.225f);
Player.score += 1;
} // if
break;
case WeaponTypes.Rockets:
if (gameTimeMs - lastShootTimeMs >= 500)
{
Vector3 shootPos = shipPos +
new Vector3(shootNum % 2 == 0 ? -2.64f : +2.64f, 0, 0);
Mission.AddWeaponProjectile(
Projectile.WeaponTypes.Rocket, shootPos, true);
EffectManager.AddFireFlash(shootPos);
EffectManager.PlaySoundEffect(
EffectManager.EffectSoundType.RocketShoot);
shootNum++;
lastShootTimeMs = gameTimeMs;
Input.GamePadRumble(0.10f, 0.15f);
Player.score += 10;
} // if
break;
} // switch
} // if
// Fire EMP?
if (empBombs > 0 &&
empBombTimeout <= 0 &&
(Input.GamePadBJustPressed ||
Input.KeyboardSpaceJustPressed))
{
empBombs--;
empBombTimeout = MaxEmpTimeout;
empPosition = shipPos + new Vector3(0, 10, 0);
// Give some extra points to player
Player.score += 1000;
// Big badda boom
//tst: EffectManager.AddExplosion(empPosition, 10);
for (int num=0; num<5; num++)
EffectManager.AddEffect(shipPos+ new Vector3(0, 5, 0),
EffectManager.EffectType.ExplosionRing, 2+2.5f*num, 0);
Sound.Play(Sound.Sounds.EMP);
} // if
if (empBombTimeout > 0)
{
empBombTimeout -= BaseGame.ElapsedTimeThisFrameInMs;
if (empBombTimeout <= 0)
empBombTimeout = 0;
// EMP Distance
float distance = 64 *
(MaxEmpTimeout - empBombTimeout) / MaxEmpTimeout;
// Show effect
BaseGame.DrawLine(
empPosition +new Vector3(-100, distance, 0),
empPosition +new Vector3(+100, distance, 0));
BaseGame.DrawLine(
empPosition +new Vector3(-100, -distance, 0),
empPosition +new Vector3(+100, -distance, 0));
BaseGame.DrawLine(
empPosition +new Vector3(distance, -100, 0),
empPosition +new Vector3(distance, +100, 0));
BaseGame.DrawLine(
empPosition +new Vector3(-distance, -100, 0),
empPosition +new Vector3(-distance, +100, 0));
// Kill all units on screen that are in range!
for (int num = 0; num < Mission.units.Count; num++)
{
// Only include units on the screen and don't kill asteroids.
// Projectiles and effects stay active too.
if ((Mission.units[num].position -
new Vector2(empPosition.X, empPosition.Y)).Length() < distance + 10)// &&
//Mission.units[num].position.Y - Mission.LookAtPosition.Y < 15 &&
//looks cooler with: Mission.units[num].unitType != Unit.UnitTypes.Asteroid)
{
Player.score += (int)Mission.units[num].hitpoints / 10;
Mission.units[num].hitpoints = 0;
} // if
} // for
} // if (emp bomb active)
if (Player.health <= 0)
{
victory = false;
EffectManager.AddExplosion(shipPos, 20);
for (int num = 0; num<8; num++)
EffectManager.AddFlameExplosion(shipPos+
RandomHelper.GetRandomVector3(-12, +12), false);
Sound.PlayDefeatSound();
Player.SetGameOverAndUploadHighscore();
} // if
} // HandleGameLogic(asteroidManager)
#endregion
} // class Player
} // namespace XnaShooter
(C) Æliens
20/2/2008
You may not copy or print any of this material without explicit permission of the author or the publisher.
In case of other copyright issues, contact the author.
