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working missile trails

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This commit is contained in:
Chris Forbes
2011-04-09 19:37:11 +12:00
parent 5fd3cc7977
commit 79079ebe07
4 changed files with 91 additions and 51 deletions
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62
OpenRA.Mods.RA/Effects/Bullet.cs
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@@ -14,6 +14,7 @@ using OpenRA.Effects;
using OpenRA.GameRules;
using OpenRA.Graphics;
using OpenRA.Traits;
using System.Drawing;
namespace OpenRA.Mods.RA.Effects
{
@@ -30,6 +31,9 @@ namespace OpenRA.Mods.RA.Effects
public readonly bool Proximity = false;
public readonly float Angle = 0;
public readonly int TrailInterval = 2;
public readonly int ContrailLength = 0;
public readonly bool ContrailUsePlayerColor = false;
public readonly int ContrailDelay = 1;
public IEffect Create(ProjectileArgs args) { return new Bullet( this, args ); }
}
@@ -43,6 +47,7 @@ namespace OpenRA.Mods.RA.Effects
Animation anim;
const int BaseBulletSpeed = 100; /* pixels / 40ms frame */
ContrailHistory Trail;
public Bullet(BulletInfo info, ProjectileArgs args)
{
@@ -60,6 +65,13 @@ namespace OpenRA.Mods.RA.Effects
anim = new Animation(Info.Image, GetEffectiveFacing);
anim.PlayRepeating("idle");
}
if (Info.ContrailLength > 0)
{
Trail = new ContrailHistory(Info.ContrailLength,
Info.ContrailUsePlayerColor ? ContrailHistory.ChooseColor(args.firedBy) : Color.White,
Info.ContrailDelay);
}
}
int TotalTime() { return (Args.dest - Args.src).Length * BaseBulletSpeed / Info.Speed; }
@@ -94,7 +106,6 @@ namespace OpenRA.Mods.RA.Effects
if (t > TotalTime()) Explode( world );
if (Info.Trail != null)
{
var at = (float)t / TotalTime();
var altitude = float2.Lerp(Args.srcAltitude, Args.destAltitude, at);
@@ -104,12 +115,15 @@ namespace OpenRA.Mods.RA.Effects
? (pos - new float2(0, GetAltitude()))
: pos;
if (--ticksToNextSmoke < 0)
if (Info.Trail != null && --ticksToNextSmoke < 0)
{
world.AddFrameEndTask(w => w.Add(
new Smoke(w, highPos.ToInt2(), Info.Trail)));
ticksToNextSmoke = Info.TrailInterval;
}
if (Trail != null)
Trail.Tick(highPos);
}
if (!Info.High) // check for hitting a wall
@@ -129,29 +143,35 @@ namespace OpenRA.Mods.RA.Effects
const float height = .1f;
public IEnumerable<Renderable> Render()
{
if (anim != null)
{
var at = (float)t / TotalTime();
public IEnumerable<Renderable> Render()
{
if (anim != null)
{
var at = (float)t / TotalTime();
var altitude = float2.Lerp(Args.srcAltitude, Args.destAltitude, at);
var pos = float2.Lerp(Args.src, Args.dest, at) - new float2(0, altitude);
var altitude = float2.Lerp(Args.srcAltitude, Args.destAltitude, at);
var pos = float2.Lerp(Args.src, Args.dest, at) - new float2(0, altitude);
if (Info.High || Info.Angle > 0)
{
if (Info.Shadow)
yield return new Renderable(anim.Image, pos - .5f * anim.Image.size, "shadow", (int)pos.Y);
if (Args.firedBy.World.LocalShroud.IsVisible(OpenRA.Traits.Util.CellContaining(pos)))
{
if (Info.High || Info.Angle > 0)
{
if (Info.Shadow)
yield return new Renderable(anim.Image, pos - .5f * anim.Image.size, "shadow", (int)pos.Y);
var highPos = pos - new float2(0, GetAltitude());
var highPos = pos - new float2(0, GetAltitude());
yield return new Renderable(anim.Image, highPos - .5f * anim.Image.size, Args.firedBy.Owner.Palette, (int)pos.Y);
}
else
yield return new Renderable(anim.Image, pos - .5f * anim.Image.size,
Args.weapon.Underwater ? "shadow" : Args.firedBy.Owner.Palette, (int)pos.Y);
}
}
yield return new Renderable(anim.Image, highPos - .5f * anim.Image.size, Args.firedBy.Owner.Palette, (int)pos.Y);
}
else
yield return new Renderable(anim.Image, pos - .5f * anim.Image.size,
Args.weapon.Underwater ? "shadow" : Args.firedBy.Owner.Palette, (int)pos.Y);
}
}
if (Trail != null)
Trail.Render(Args.firedBy);
}
void Explode( World world )
{