public bool IsVisible(Enemy monster)
{
//MAGIC NUMBERS. Screen is 800 long by 480
//We can determine if the monster is visible based on the players position
int screen_x = Math.Abs(game_state.local_player.getX() - monster.getX());
int screen_y = Math.Abs(game_state.local_player.getY() - monster.getY());
if (screen_x > 800 || screen_y > 400)
{
return false;
}
return true;
}
public void load(TileLayer _objects_layer)
{
objects_layer = _objects_layer;
for (int w = 0; w < objects_layer.getWidth(); ++w)
{
for (int h = 0; h < objects_layer.getHeight(); ++h)
{
Tile t = objects_layer.getTile(w, h);
if (t.getTexture() == -1)
{
continue;
}
if (obj_hash[t.getTexture()] == objectType.SPAWN)
{
if (t.getTexture() == PLAYER_SPAWN)
{
game_state.local_player.setX((w * TileEngine.TILE_SIZE)+(TileEngine.TILE_SIZE/2) - game_state.local_player.getWidth()/2);///2+game_state.local_player.getWidth());
game_state.local_player.setY((h * TileEngine.TILE_SIZE) + (TileEngine.TILE_SIZE / 2) - game_state.local_player.getHeight());///2+game_state.local_player.getHeight());
}
else
{
int width = 0;
int height = 0;
enemyType type = enemyType.BEETLE;
switch (t.getTexture())
{
case 78: //Beetle
width = 30;
height = 30;
type = enemyType.BEETLE;
break;
case 72: //grunt
width = 32;
height = 36;
type = enemyType.GRUNT;
break;
case 73: //Berserker
width = 32;
height = 36;
type = enemyType.BERSERKER;
break;
case 77: //Trooper
width = 32;
height = 36;
type = enemyType.TROOPER;
break;
default:
continue;
}
Enemy monster = new Enemy((w * TileEngine.TILE_SIZE)+16-(width/2), (h * TileEngine.TILE_SIZE)+16-(height/2), width, height, type);
game_state.monster_engine.AddMonster(monster);
}
t.setTexture(-1);
}
}
}
}
public void Remove(Enemy monster)
{
game_state.coll_engine.remove_object(monster.col_tok);
monsters.Remove(monster);
}
public void AddMonster(Enemy monster)
{
//Request collision token and push monster to monster list
monster.col_tok = game_state.coll_engine.register_object(monster, ColType.MONSTER);
monsters.Add(monster);
}
void move_towards_target(Enemy monster)
{
if (monster.getTarget() == null)
{
return;
}
int dist_x = monster.getTarget().loc_x - (monster.getX()+(monster.getWidth()/2))/game_state.tile_engine.getTileSize();
int dist_y = monster.getTarget().loc_y - (monster.getY()+(monster.getHeight())) / game_state.tile_engine.getTileSize();
if (dist_x == 0 && dist_y == 0)
{
monster.nextTarget();
return;
}
if (Math.Abs(dist_x) > Math.Abs(dist_y))
{
//Advance in the X direction
if (dist_x > 0)
{
monster.setX(monster.getX() + monster.getSpeed());
monster.setDirection(PlayerDir.RIGHT);
}
else
{
monster.setX(monster.getX() - monster.getSpeed());
monster.setDirection(PlayerDir.LEFT);
}
}
else
{
//Advance in the Y direction
if (dist_y > 0)
{
monster.setY(monster.getY() + monster.getSpeed());
monster.setDirection(PlayerDir.DOWN);
}
else
{
monster.setY(monster.getY() - monster.getSpeed());
monster.setDirection(PlayerDir.UP);
}
}
if (monster.getLastDirection() != monster.getDirection())
{
monster.getSprite().StartAnimating((int)monster.getDirection() * 3, ((int)monster.getDirection() * 3) + 2);
}
}
//Two basic functions for the Monster engine
actionDecision think(Enemy monster)
{
float[] ratings = new float[(int)actionDecision.NUM_ACTIONS];
int dist_x = game_state.local_player.getX() - monster.getX();
int dist_y = game_state.local_player.getY() - monster.getY();
int Dp = GetRating(Math.Sqrt(Math.Pow(dist_x, 2) + Math.Pow(dist_y, 2)), 800.0f);
int Db = 0; //Bullet system not in yet
int Alg = 0;
if (Math.Abs(dist_x) < Math.Abs(dist_y))
{
Alg = GetRating(Math.Abs(dist_x), 400);
}
else
{
Alg = GetRating(Math.Abs(dist_y), 240);
}
int Hlt = GetRating(monster.getHealth(), monster.getMaxHealth());
actionDecision retval = actionDecision.FLEE;
float max_value = 0;
for (int i = 0; i < (int)actionDecision.NUM_ACTIONS; ++i)
{
ratings[i] =
decision_matrix[(int)monster.getType(), i, (int)actionFactor.DP]*Dp +
decision_matrix[(int)monster.getType(), i, (int)actionFactor.DB]*Db +
decision_matrix[(int)monster.getType(), i, (int)actionFactor.AL]*Alg +
decision_matrix[(int)monster.getType(), i, (int)actionFactor.HL]*Hlt;
if (ratings[i] > max_value)
{
retval = (actionDecision)i;
max_value = ratings[i];
}
}
if (max_value < 5)
{
return actionDecision.IDLE;
}
return retval;
}
//Functions to calculate actions
void flee(Enemy monster)
{
PathFind pf = new PathFind(game_state);
int dist_x = game_state.local_player.getX() - monster.getX();
int dist_y = game_state.local_player.getY() - monster.getY();
int mons_tile_x = (monster.getX() + (monster.getWidth() / 2)) / game_state.tile_engine.getTileSize();
int mons_tile_y = (monster.getY() + (monster.getHeight() / 2)) / game_state.tile_engine.getTileSize();
int pl_tile_x = game_state.local_player.getX() / game_state.tile_engine.getTileSize();
int pl_tile_y = game_state.local_player.getY() / game_state.tile_engine.getTileSize();
Random r = new Random();
int mons_tile_xr = mons_tile_x;
int mons_tile_yr = mons_tile_y;
//int pl_tile_yr = pl_tile_y + r.Next(-5, 5);
//int pl_tile_xr = pl_tile_x + r.Next(-5, 5);
if (Math.Abs(dist_x) < Math.Abs(dist_y))
{
//Flee in the Y direction from the player
if (dist_y <= 0)
{
mons_tile_yr += r.Next(-10, -5);
mons_tile_xr += r.Next(-10, 10);
if (mons_tile_yr < 0)
mons_tile_yr = 0;
if (mons_tile_xr < 0)
mons_tile_xr = 0;
monster.setPath(pf.FindPath(mons_tile_x, mons_tile_y, mons_tile_xr, mons_tile_yr));
}
else
{
mons_tile_yr += r.Next(5, 10);
mons_tile_xr += r.Next(-10, 10);
if (mons_tile_yr < 0)
mons_tile_yr = 0;
if (mons_tile_xr < 0)
mons_tile_xr = 0;
monster.setPath(pf.FindPath(mons_tile_x, mons_tile_y, mons_tile_xr, mons_tile_yr));
}
}
else
{
//Flee in the x direction from the player
if (dist_x <= 0)
{
mons_tile_yr += r.Next(-10, 10);
mons_tile_xr += r.Next(5, 10);
if (mons_tile_yr < 0)
mons_tile_yr = 0;
if (mons_tile_xr < 0)
mons_tile_xr = 0;
monster.setPath(pf.FindPath(mons_tile_x, mons_tile_y, mons_tile_xr, mons_tile_yr));
}
else
{
mons_tile_yr += r.Next(-10, 10);
mons_tile_xr += r.Next(5, 10);
if (mons_tile_yr < 0)
mons_tile_yr = 0;
if (mons_tile_xr < 0)
mons_tile_xr = 0;
monster.setPath(pf.FindPath(mons_tile_x, mons_tile_y, mons_tile_xr, mons_tile_yr));
}
monster.setPath(pf.FindPath(mons_tile_x, mons_tile_y, mons_tile_xr, mons_tile_yr));
}
//monster.setPath(pf.FindPath(mons_tile_x, mons_tile_y, mons_tile_xr, mons_tile_yr));
}
void idle(Enemy monster)
{
//THIS IS FOR DEBUG PURPOSES
//PathFind pf = new PathFind(game_state);
//int mons_tile_x = (monster.getX() + (monster.getWidth() / 2)) / game_state.tile_engine.getTileSize();
//int mons_tiel_y = (monster.getY() + (monster.getHeight())) / game_state.tile_engine.getTileSize();
//monster.setPath(pf.FindPath(mons_tile_x, mons_tiel_y, 1, 1));
PathFind pf = new PathFind(game_state);
int mons_tile_x = (monster.getX() + (monster.getWidth() / 2)) / game_state.tile_engine.getTileSize();
int mons_tile_y = (monster.getY() + (monster.getHeight() / 2)) / game_state.tile_engine.getTileSize();
Random r = new Random();
int mons_tile_xr = mons_tile_x + r.Next(-10, 10);
int mons_tile_yr = mons_tile_y + r.Next(-10, 10);
if (mons_tile_yr < 0)
mons_tile_yr = 0;
if (mons_tile_xr < 0)
mons_tile_xr = 0;
monster.setPath(pf.FindPath(mons_tile_x, mons_tile_y, mons_tile_xr, mons_tile_yr));
/*
//Random number
System.Random generator = new System.Random();
int dir = generator.Next(4);
switch ((PlayerDir)dir)
{
case PlayerDir.DOWN:
monster.setY(monster.getY() + monster.getSpeed());
monster.setDirection(PlayerDir.DOWN);
break;
case PlayerDir.LEFT:
monster.setX(monster.getX() - monster.getSpeed());
monster.setDirection(PlayerDir.LEFT);
break;
case PlayerDir.RIGHT:
monster.setX(monster.getX() + monster.getSpeed());
monster.setDirection(PlayerDir.RIGHT);
break;
case PlayerDir.UP:
monster.setY(monster.getY() - monster.getSpeed());
monster.setDirection(PlayerDir.UP);
break;
}
* */
}
void evade(Enemy monster)
{
//Place holder till bullet system works
}
void fire(Enemy monster)
{
int player_x = game_state.local_player.getX();
int player_y = game_state.local_player.getY();
int monster_x = monster.getX();
int monster_y = monster.getY();
int fire_x = 0;
int fire_y = 0;
int min = 0;
int max = 0;
PlayerDir dir = PlayerDir.UP;
Random random = new Random();
bool fire = false;
if (player_x < monster_x + monster.getWidth() && player_x > monster_x - monster.getWidth())
{
fire = true;
min = monster.getX();
max = monster.getX()+monster.getWidth();
fire_x = random.Next(min,max);
if (monster_y - player_y >= 0)
{
dir = PlayerDir.UP;
fire_y = monster.getY() + 5;
}
else
{
dir = PlayerDir.DOWN;
fire_y = monster.getY() + monster.getHeight();
}
}
else if (player_y < monster_y + monster.getHeight() && player_y > monster_y - monster.getHeight())
{
fire = true;
min = monster.getY();
max = monster.getY() + monster.getHeight();
fire_y = random.Next(min, max);
if (monster_x - player_x >= 0)
{
dir = PlayerDir.LEFT;
fire_x = monster.getX() - 5;
}
else
{
dir = PlayerDir.RIGHT;
fire_x = monster.getX() + monster.getWidth();
}
}
if (fire)
{
game_state.bullet_engine.fire(fire_x, fire_y, dir, bulletOwner.ENEMY, bulletType.SMALL);
fire = false;
}
else
{
this.advance(monster);
}
//Place holder till bullet system works
}
void align(Enemy monster)
{
PathFind pf = new PathFind(game_state);
int dist_x = game_state.local_player.getX() - monster.getX();
int dist_y = game_state.local_player.getY() - monster.getY();
int mons_tile_x = (monster.getX() + (monster.getWidth() / 2)) / game_state.tile_engine.getTileSize();
int mons_tile_y = (monster.getY() + (monster.getHeight() / 2)) / game_state.tile_engine.getTileSize();
int pl_tile_x = game_state.local_player.getX() / game_state.tile_engine.getTileSize();
int pl_tile_y = game_state.local_player.getY() / game_state.tile_engine.getTileSize();
if (Math.Abs(dist_x) < Math.Abs(dist_y))
{
//Advance in the X direction toward the player
monster.setPath(pf.FindPath(mons_tile_x, mons_tile_y, pl_tile_x, mons_tile_y));
}
else
{
//Advance in the Y direction toward the player
monster.setPath(pf.FindPath(mons_tile_x, mons_tile_y, mons_tile_x, pl_tile_y-1));
}
}
void advance(Enemy monster)
{
PathFind pf = new PathFind(game_state);
int mons_tile_x = (monster.getX() + (monster.getWidth() / 2)) / game_state.tile_engine.getTileSize();
int mons_tile_y = (monster.getY() + (monster.getHeight())) / game_state.tile_engine.getTileSize();
int pl_tile_x = (game_state.local_player.getX()+(game_state.local_player.getWidth()/2))/game_state.tile_engine.getTileSize();
int pl_tile_y = (game_state.local_player.getY()+(game_state.local_player.getHeight()))/game_state.tile_engine.getTileSize();
// pl_tile_y += 1;//get the enemies to head toward the bottom of the player so that they follow you on the bridge
monster.setPath(pf.FindPath(mons_tile_x, mons_tile_y, pl_tile_x, pl_tile_y));
}
void act(Enemy monster, actionDecision action)
{
switch (action)
{
case actionDecision.FLEE:
flee(monster);
break;
case actionDecision.ALIGN:
align(monster);
break;
case actionDecision.ADVANCE:
advance(monster);
break;
case actionDecision.EVADE:
evade(monster);
break;
case actionDecision.FIRE:
fire(monster);
break;
case actionDecision.IDLE:
idle(monster);
break;
}
}
// dont do anything
void idle(Enemy monster)
{
PathFind pf = new PathFind(game_state);
int mons_tile_x = (monster.getX() + (monster.getWidth() / 2)) / game_state.tile_engine.getTileSize();
int mons_tile_y = (monster.getY() + (monster.getHeight() / 2)) / game_state.tile_engine.getTileSize();
Random r = new Random();
int mons_tile_xr = mons_tile_x + r.Next(-10, 10);
int mons_tile_yr = mons_tile_y + r.Next(-10, 10);
if (mons_tile_yr < 0)
mons_tile_yr = 0;
if (mons_tile_xr < 0)
mons_tile_xr = 0;
monster.setPath(pf.FindPath(mons_tile_x, mons_tile_y, mons_tile_xr, mons_tile_yr));
}
// go toward player
void advance(Enemy monster)
{
PathFind pf = new PathFind(game_state);
int mons_tile_x = (monster.getX() + (monster.getWidth() / 2)) / game_state.tile_engine.getTileSize();
int mons_tile_y = (monster.getY() + (monster.getHeight())) / game_state.tile_engine.getTileSize();
int pl_tile_x = (game_state.local_player.getX()+(game_state.local_player.getWidth()/2))/game_state.tile_engine.getTileSize();
int pl_tile_y = (game_state.local_player.getY()+(game_state.local_player.getHeight()))/game_state.tile_engine.getTileSize();
monster.setPath(pf.FindPath(mons_tile_x, mons_tile_y, pl_tile_x, pl_tile_y));
}