public override void DeployCommand(DVector3 position)
{
if (!buildInProgress)
{
return;
}
if (currentMode != BuildMode.BUILD_THEN_PLACE)
{
return;
}
if (remainingTime > 0)
{
return;
}
position = new DVector3(position.x,
World.current.map.Height(position),
position.z);
if (!CheckBuildPlacement(buildingWhat, position))
{
return;
}
World.current.Instantiate(buildables[buildingWhat],
entity.team,
position);
buildInProgress = false;
}
public bool CheckBuildPlacement(int id, DVector3 position)
{
// Eugh. Poke around in the prototype for the collider (if any).
var radius = (DReal)0;
var proto = World.current.entityPrototypes[buildables[id]];
foreach (var cproto in proto.components)
{
if (cproto.kind == "Collider")
{
radius = DReal.Parse(cproto.data["radius"]);
}
}
if (World.current.FindEntitiesWithinRadius(position, radius * 2).Any())
{
return(false);
}
// Must be within a build radius.
foreach (var ent in World.current.entities.Where(e => e.team == entity.team))
{
var br = ent.GetComponent <BuildRadius>();
if (br != null && br.Contains(position, radius))
{
return(true);
}
}
return(false);
}
// c (+0,+1) d (+1,+1)
// +--x-------+
// | | icd | Interpolate between a and b, producing iab.
// | x | Interpolate between c and d, producing icd.
// | | i | Interpolate between iab and icd, producing the interpolated result.
// | | |
// | | iab |
// +--x-------+
// a (+0,+0) b (+1,+0)
public static DVector3 BilinearLerp(DVector3 a, DVector3 b, DVector3 c, DVector3 d, DReal x, DReal y)
{
var iab = Lerp(a, b, x);
var icd = Lerp(c, d, x);
return(Lerp(iab, icd, y));
}
public override void DeployCommand(DVector3 position)
{
World.current.Instantiate(deployPrototype,
entity.team,
entity.position);
entity.Destroy();
}
public void BuildCommand(int id, DVector3 position)
{
position = World.current.map.WrapPosition(position);
foreach (var c in components)
{
c.BuildCommand(id, position);
}
}
public void SendDeployCommand(int eid, Game.DVector3 point)
{
var message = new NetworkMessage(NetworkMessage.Type.CommandDeploy);
message.entityId = eid;
message.position = point;
SendMessageToServer(message);
}
public void DeployCommand(DVector3 position)
{
position = World.current.map.WrapPosition(position);
foreach (var c in components)
{
c.DeployCommand(position);
}
}
public void SendBuildCommand(int eid, int buildId, Game.DVector3 point)
{
var message = new NetworkMessage(NetworkMessage.Type.CommandBuild);
message.entityId = eid;
message.buildId = buildId;
message.position = point;
SendMessageToServer(message);
}
public override void MoveCommand(DVector3 position)
{
if (motor != null)
{
motor.MoveTo(position);
}
attackTarget = null;
passiveAttackTarget = null;
}
public Entity(int team, DVector3 position, EntityPrototype prototype)
{
this.eid = World.current.RegisterEntity(this);
this.team = team;
this.position = position;
this.isAlive = true;
this.prototype = prototype;
this.modelName = prototype.name;
}
public Entity(int team, DVector3 position, string modelName)
{
this.eid = World.current.RegisterEntity(this);
this.team = team;
this.position = position;
this.modelName = modelName;
this.isAlive = true;
this.prototype = null;
}
// Cast a line from A to B, checking for collisions with other entities.
public IEnumerable <LineCastResult> LineCastAll(DVector3 start, DVector3 end, int ignoreTeam = -1)
{
var start2d = new DVector2(start.x, start.z);
var end2d = new DVector2(end.x, end.z);
foreach (Collider c in colliders)
{
if (c.entity.team == ignoreTeam)
{
continue;
}
var position2d = new DVector2(c.entity.position.x, c.entity.position.z);
DVector2 result;
// FIXME: Need to adjust positions to correct for wrap.
// FIXME: Some cases still not handled properly.
//
// _______________
// | / |
// ---X-----------
// /
// /
// O
// /
// /
// Circle intersects at O, which is a miss, but a real intersect happens at X.
if (Utility.IntersectLineCircle(position2d, c.radius, start2d, end2d, out result))
{
// Possible hit, work out the correct 3D position at the intersect.
var result3d = new DVector3(result.x, start.y, result.y);
var a = result3d - start;
var bhat = (end - start).normalized;
var ab = DVector3.Dot(a, bhat);
var intersectPoint = start + bhat * ab;
var height = intersectPoint.y;
var bottom = c.entity.position.y;
var top = bottom + c.height;
Logger.Log("result3d: {0} a: {1} bhat: {2} ab: {3} height: {4} bottom: {5} top:{6}",
result3d, a, bhat, ab, height, bottom, top);
DebugExtension.DebugPoint((UnityEngine.Vector3)intersectPoint, UnityEngine.Color.blue, 10, 10);
UnityEngine.Debug.DrawLine((UnityEngine.Vector3)start, (UnityEngine.Vector3)end, UnityEngine.Color.green, 10);
UnityEngine.Debug.DrawLine((UnityEngine.Vector3)start, (UnityEngine.Vector3)result3d, UnityEngine.Color.green, 10);
if (bottom <= height && height <= top)
{
var r = new LineCastResult();
r.entity = c.entity;
r.position = intersectPoint;
yield return(r);
}
}
}
}
public ProjectileWeapon(Entity entity, ComponentPrototype proto) : base(entity)
{
projectile = proto.data["projectile"];
range = DReal.Parse(proto.data["range"]);
fireRate = DReal.Parse(proto.data["fireRate"]);
randomOffset = new DVector3(DReal.Parse(proto.data["randomOffsetX"]),
DReal.Parse(proto.data["randomOffsetY"]),
DReal.Parse(proto.data["randomOffsetZ"]));
fireTime = 0;
}
public void FireAt(Entity target)
{
if (fireTime > 0)
{
return;
}
var dist = entity.Range(target);
if (dist > range)
{
return;
}
var target_position = target.position;
// Aim for the middle.
var target_collider = target.GetComponent <Collider>();
if (target_collider != null)
{
target_position += new DVector3(0, target_collider.height / 2, 0);
}
var projectile_spawn = entity.position;
if (collider != null)
{
// Spawn from front middle of the collider.
projectile_spawn += new DVector3(0, collider.height / 2, 0);
projectile_spawn += entity.faceDirection * collider.radius;
}
// Offset the origin slightly to make it less repetative.
projectile_spawn += new DVector3(randomOffset.x * World.current.RandomRange(-1, 1),
randomOffset.y * World.current.RandomRange(-1, 1),
randomOffset.z * World.current.RandomRange(-1, 1));
var dir = World.current.map.Direction(projectile_spawn, target_position);
fireTime = fireRate;
var ent = World.current.Instantiate(projectile, entity.team, projectile_spawn);
var proj = ent.GetComponent <Projectile>();
if (proj != null)
{
proj.spawner = entity;
proj.target = target_position;
}
World.current.eventListener.Animate(entity, "Fire");
}
public Entity LineCast(DVector3 start, DVector3 end, out DVector3 hitPosition, int ignoreTeam = -1)
{
var result = LineCastAll(start, end, ignoreTeam)
.OrderBy(r => map.Distance(start, r.position))
.FirstOrDefault();
if (result == null)
{
hitPosition = new DVector3(0, 0, 0);
return(null);
}
hitPosition = result.position;
return(result.entity);
}
public override bool Equals(System.Object obj)
{
// If parameter is null return false.
if (obj == null)
{
return(false);
}
// If parameter cannot be cast to Point return false.
DVector3 p = (DVector3)obj;
// Return true if the fields match:
return(this == p);
}
public IEnumerable <Entity> FindEntitiesWithinRadius(DVector3 position, DReal radius, int ignoreTeam = -1)
{
foreach (Collider c in colliders)
{
if (c.entity.team == ignoreTeam)
{
continue;
}
var dist = map.Distance(c.entity.position, position);
if (dist < radius + c.radius)
{
yield return(c.entity);
}
}
}
public DReal Height(DVector3 position)
{
var ix = (int)position.x;
var iz = (int)position.z;
// Corner heights.
var ha = RawHeight(ix, iz);
var hb = RawHeight(ix + 1, iz);
var hc = RawHeight(ix, iz + 1);
var hd = RawHeight(ix + 1, iz + 1);
// Interpolation offsets.
var tx = position.x - ix;
var tz = position.z - iz;
return(DReal.BilinearLerp(ha, hb, hc, hd, tx, tz));
}
public DVector3 Normal(DVector3 position)
{
var ix = (int)position.x;
var iz = (int)position.z;
// Corner normals.
var ha = RawNormal(ix, iz);
var hb = RawNormal(ix + 1, iz);
var hc = RawNormal(ix, iz + 1);
var hd = RawNormal(ix + 1, iz + 1);
// Interpolation offsets.
var tx = position.x - ix;
var tz = position.z - iz;
return(DVector3.BilinearLerp(ha, hb, hc, hd, tx, tz).normalized);
}
public DVector3 RandomSpawnPosition(DReal min, DReal max)
{
for (var attempt = 0; attempt < 100; attempt += 1)
{
var angle = World.current.RandomValue() * 360;
var radius = World.current.RandomRange(min, max);
var x = this.position.x + DReal.Cos(angle) * radius;
var z = this.position.z + DReal.Sin(angle) * radius;
var height = World.current.map.Height(new DVector3(x, 0, z));
var p = new DVector3(x, height, z);
if (World.current.navigation.Reachability(this.position) == World.current.navigation.Reachability(p))
{
return(p);
}
}
UnityEngine.Debug.Log("Failed to generate random position.");
return(this.position);
}
IEnumerable <DVector3> neighbors(DVector3 point)
{
yield return(map.WrapPosition(point + new DVector3(0, 0, +1) * granularity));
yield return(map.WrapPosition(point + new DVector3(0, 0, -1) * granularity));
yield return(map.WrapPosition(point + new DVector3(+1, 0, 0) * granularity));
yield return(map.WrapPosition(point + new DVector3(-1, 0, 0) * granularity));
yield return(map.WrapPosition(point + new DVector3(+1, 0, +1) * granularity));
yield return(map.WrapPosition(point + new DVector3(+1, 0, -1) * granularity));
yield return(map.WrapPosition(point + new DVector3(-1, 0, +1) * granularity));
yield return(map.WrapPosition(point + new DVector3(-1, 0, -1) * granularity));
}
public override void DeployCommand(DVector3 position)
{
if (tower != null && tower.isAlive)
{
return;
}
if (towerBuildCooldownRemaining > 0)
{
return;
}
if (!CheckBuildPlacement(position))
{
return;
}
// TODO: Respect the tower's build mode.
tower = World.current.Instantiate(towerPrototype,
entity.team,
position);
towerBuildCooldownRemaining = towerBuildCooldown;
}
public bool MoveTo(DVector3 position)
{
if (currentPath != null && currentPath.Count != 0)
{
// Try to avoid recomputing path.
var dist = World.current.map.Distance(position, currentPath[currentPath.Count - 1]);
if (dist < 1)
{
return(true);
}
}
var newPath = World.current.navigation.BuildPath(entity.position, position);
if (newPath == null)
{
return(false);
}
currentPath = newPath;
return(true);
}
// Range to target, adjusted by collider size.
public DReal Range(Entity target)
{
var ent2d = new DVector3(position.x, 0, position.z);
var targ2d = new DVector3(target.position.x, 0, target.position.z);
var dist = World.current.map.Distance(ent2d, targ2d);
var local_collider = GetComponent <Collider>();
if (local_collider != null)
{
dist -= local_collider.radius;
}
var target_collider = target.GetComponent <Collider>();
if (target_collider != null)
{
dist -= target_collider.radius;
}
return(DReal.Max(0, dist));
}
public override void OnTick()
{
var p2d = new DVector3(entity.position.x, 0, entity.position.z);
var targ = new Game.DVector3(target.x, 0, target.z);
var dist = World.current.map.Distance(p2d, targ);
var dir = World.current.map.Direction(p2d, targ);
if (dist < moveSpeed * World.deltaTime)
{
entity.position = new DVector3(target.x, entity.position.y, target.z);
}
else
{
var d = p2d + dir * moveSpeed * World.deltaTime;
entity.position = new DVector3(d.x, entity.position.y, d.z);
entity.faceDirection = dir;
}
var terrainHeight = DReal.Max(0, World.current.map.Height(entity.position));
var wobble = DReal.Sin((World.current.time + wobbleOffset) * wobbleFrequency) * wobbleAmplitude;
var targetHeight = terrainHeight + floatOffset + wobble;
var height_diff = DReal.Abs(targetHeight - entity.position.y);
var newHeight = (DReal)0;
if (targetHeight > entity.position.y)
{
newHeight = entity.position.y + DReal.Min(height_diff, verticalSpeed * World.deltaTime);
}
else
{
newHeight = entity.position.y - DReal.Min(height_diff, verticalSpeed * World.deltaTime);
}
entity.position = new DVector3(entity.position.x,
DReal.Max(terrainHeight, newHeight),
entity.position.z);
}
// Directly examine the map to determine if a tile is passible.
bool MapPassable(int x, int z)
{
for (int xoff = 0; xoff < granularity; xoff += 1)
{
for (int zoff = 0; zoff < granularity; zoff += 1)
{
var pos = new DVector3(x + xoff + DReal.Half, 0, z + zoff + DReal.Half);
var normal = map.Normal(pos);
var up = new DVector3(0, 1, 0);
var slope = DVector3.Dot(normal, up);
if (slope < slopeLimit)
{
// Too sloped.
return(false);
}
if (map.Height(pos) < 0)
{
// Underwater.
return(false);
}
}
}
return(true);
}
public DVector3 WrappedVectorSub(DVector3 lhs, DVector3 rhs)
{
var dx = lhs.x - rhs.x;
var dy = lhs.y - rhs.y;
var dz = lhs.z - rhs.z;
if (dx > width / 2)
{
dx = dx - width;
}
else if (dx < -width / 2)
{
dx = dx + width;
}
if (dz > depth / 2)
{
dz = dz - depth;
}
else if (dz < -depth / 2)
{
dz = dz + depth;
}
return(new DVector3(dx, dy, dz));
}
public override void MoveCommand(DVector3 position)
{
is_idle = true;
motor.MoveTo(position);
}
public bool Contains(DVector3 point, DReal thing_radius)
{
var dist = World.current.map.Distance(point, entity.position);
return(dist < radius + thing_radius);
}
void DoFire(Game.DVector3 targetPoint, Game.DVector3 origin)
{
Debug.Log("Firing at " + targetPoint + " from " + origin);
var dist = navMesh.map.Distance(new Game.DVector3((Game.DReal)origin.x, 0, (Game.DReal)origin.z),
new Game.DVector3((Game.DReal)targetPoint.x, 0, (Game.DReal)targetPoint.z));
var dir = navMesh.map.Direction(new Game.DVector3((Game.DReal)origin.x, 0, (Game.DReal)origin.z),
new Game.DVector3((Game.DReal)targetPoint.x, 0, (Game.DReal)targetPoint.z));
Debug.Log("Distance to target is " + dist);
Debug.DrawRay((Vector3)origin, (Vector3)(dir * dist), Color.white, 10.0f);
// Walk the line to check for collisions against the terrain.
// ### Walking the projectile's whole path feels dubious for performance...
// At least it only needs to be done once. Line/terrain intersect algorithms?
// This computes X, the highest point of the arc (actually triangle) to clear the terrain.
// X
// / \
// / \
// / t\
// / tt \
// /t ttt \
// / t tttt t \
// / tttttttttt \
// Actual rendering uses an arc that passes through X to look nice, and the projectile travel
// time is computed as though the line was flat.
var position = origin;
var midpoint = dist / 2;
var angle = (Game.DReal) 0;
var intesects_terrain = false;
for (var offset = (Game.DReal) 0; offset < dist; offset += projSpeed * timeStep)
{
var old = position;
var next_offset = offset + projSpeed * timeStep;
if (next_offset >= dist)
{
break;
}
position += dir * projSpeed * timeStep;
var terrain_height = navMesh.map.Height(position);
if (terrain_height > position.y)
{
Debug.DrawLine((Vector3)old,
(Vector3)position,
Color.red, 10.0f, false);
intesects_terrain = true;
if (offset > midpoint)
{
angle = Game.DReal.Max(angle, Game.DReal.Atan2(terrain_height - position.y + 1, dist - offset));
}
else
{
angle = Game.DReal.Max(angle, Game.DReal.Atan2(terrain_height - position.y + 1, offset));
}
}
}
if (intesects_terrain)
{
Debug.Log("Intersect angle: " + Game.DReal.Degrees(angle) + " cos: " + Game.DReal.Cos(angle));
var foo = dir * midpoint;
var leg = Game.DReal.Half * dist * ((Game.DReal) 1 / Game.DReal.Cos(angle));
var height = Game.DReal.Sqrt((4 * leg * leg - dist * dist) / 4);
Debug.Log("Height: " + height);
var middle = new Game.DVector3(foo.x, foo.y + height, foo.z);
Debug.DrawLine((Vector3)origin, (Vector3)(origin + middle), Color.blue, 10.0f, false);
Debug.DrawLine((Vector3)(origin + middle), (Vector3)targetPoint, Color.blue, 10.0f, false);
}
}
