[Gamecrash; due to kill or respawn script changes something...]

I think the line

self.entity:SetMass(0)

was causing crash problems. Maybe uncomment that.

[shader question]

Ah yes that worked perfectly, Ma-Shell. Thank you so much!
GorzenDev that's the post I started from. The only thing was I needed to rotate the texture without rotating the quad/mask texture itself.
Here's the script I'm using with the vertex and fragment of the shader for those wandering by:

Script:

Script.pos = Vec2(49,60) -- Vec2 "Position"
Script.size = Vec2(210,215) -- Vec2 "Size"

function Script:Start()
    self.shader = Shader:Load("HUD Elements/rotate attempt/weird.shader")
    self.intex = Texture:Load("Materials/Developer/bluegrid.tex")
    self.mask= Texture:Load("Materials/Developer/Flat Black.tex")
    self.angle=0
end

function Script:UpdateWorld()
    self.angle = Time:GetCurrent()/1000
end

function Script:PostRender(context)

    local a = self.a
    local x = self.pos.x
    local y = self.pos.y
    local w = self.size.x
    local h = self.size.y
 
    shd = context:GetShader()
    
    self.intex:Bind(1)

    self.shader:SetFloat("t", -1.0)
    self.shader:SetFloat("angle", self.angle)

    context:SetBlendMode(1)
    context:SetColor(1,1,1,1)
    context:SetShader(self.shader)
    context:DrawImage(self.mask, x, y , w, h)

    context:SetShader(shd)
end

------------------------------------------------------------------------------
Fragment of shader:

#version 400
uniform vec4 drawcolor;
uniform sampler2D texture0;
uniform sampler2D texture1;
uniform float t;

in vec2 vTexCoords0;
in vec2 vTexCoords1;

out vec4 fragData0;

void main(void)
{    
    vec4 mask=texture(texture0,vTexCoords0);
    if (mask.r < 0.1 && mask.a > 0.0) {
        vec4 t0 = texture(texture0, vTexCoords0);
        vec4 t1 = texture(texture1, vTexCoords1);
        mask = mix(t0, t1, vec4(vTexCoords1.x >= t));
    }
    else {
        discard;
    }
    fragData0 = mask;
}

------------------------------------------------------------------------------

Vertex of shader:

#version 400

uniform mat4 projectionmatrix;
uniform mat4 drawmatrix;
uniform vec2 position[5];
uniform vec2 texcoords[4];

uniform float angle = 0.0;

out vec2 vTexCoords0;
out vec2 vTexCoords1;

void main(void)
{
    float s = sin(angle);
    float c = cos(angle);
 
    mat2 RotationMatrix = mat2(c,-s,s,c);
    
    vec2 pos = position[gl_VertexID];

    gl_Position = projectionmatrix * (drawmatrix * vec4(pos, 0.0, 1.0));
    vTexCoords0 = texcoords[gl_VertexID];
    vTexCoords1 = (texcoords[gl_VertexID] - vec2(0.5, 0.5)) * RotationMatrix + vec2(0.5, 0.5);;
}

 

[shader question]

Since the time I asked this question I made a little progress. I have it rotating now using the vertex, but I can't get it to rotate from the center. It centers at the top-left. Here it is:

Fragment:

#version 400
uniform vec4 drawcolor;
uniform sampler2D texture0;
uniform sampler2D texture1;
uniform float t; // e.g. 0.4

in vec2 vTexCoords0;
in vec2 vTexCoords1;

out vec4 fragData0;

void main(void)
{    
    vec4 mask=texture(texture0,vTexCoords1);
    if (mask.r < 0.1 && mask.a > 0.0) {
        vec4 t0 = texture(texture0, vTexCoords1);
        vec4 t1 = texture(texture1, vTexCoords0);
        mask = mix(t0, t1, vec4(vTexCoords1.x >= t));
    }
    else {
        discard;
    }
    fragData0 = mask;
}

 

Vertex:

#version 400

uniform mat4 projectionmatrix;
uniform mat4 drawmatrix;
uniform vec2 position[4];
uniform vec2 texcoords[4];

uniform float turn = 0.0;

in vec3 vertex_position;
in vec2 vertex_texcoords0;

out vec2 vTexCoords0;
out vec2 vTexCoords1;

void main(void)
{
    vec2 pos = position[gl_VertexID];
    mat2 rot = mat2( cos( radians(turn)), -sin( radians(turn)), sin( radians(turn)),  cos(radians(turn)));

    gl_Position = projectionmatrix * (drawmatrix * vec4(pos, 0.0, 1.0));
    vTexCoords1 = texcoords[gl_VertexID];
    vTexCoords0 = texcoords[gl_VertexID] * rot;
}

 

 

[shader question]

I have a shader that allows me to move a texture1 within the masked space of a texture0 but I'm only able to move it in a line. I need it to rotate. How can I do that? Here's the fragment shader:

#version 400
uniform vec4 drawcolor;
uniform sampler2D texture0;
uniform sampler2D texture1;
uniform float t;    // e.g. 0.4
uniform vec2 bar = vec2(1.0,1.0);
uniform bool isbackbuffer;

in vec2 vTexCoords0;

out vec4 fragData0;

void main(void)
{    
    vec2 UV = (bar);
    if (isbackbuffer) UV.xy = 1.0 - UV.xy;
    vec4 mask=texture(texture0,vTexCoords0);
    if (mask.r < 0.1 && mask.a >0) {
        vec4 t0 = texture(texture0, vTexCoords0);
        vec4 t1 = texture(texture1, vTexCoords0+UV);
        mask = mix(t0, t1, vec4(vTexCoords0.x >= t));
    }
    else {
        discard;
    }
    fragData0 = mask;
}

    //vec2 turn = vec2(-(cos(2)*(UV.x/2) - sin(2)*(UV.y/2)),(-sin(2)*(UV.x/2) - cos(2)*(UV.y/2)));

 

[Anybody got a 2D mask shader?]

I have this rotating thing I want to make a health half-circle but I need to mask half of it. How can I do it? Anyone come across a shader for that? Or can it be done in lua? I looked around but I haven't been able to find one that works for this.

Here's my code, if that's useful:

Script.player = nil -- entity "Player"
Script.pos = Vec2(242,234) -- Vec2 "Position"
Script.offset = Vec2(4,3) -- Vec2 "Offset"
Script.csize = Vec2(200,200) -- Vec2  "Size"

function Script:Start()
    self.player = self.entity:GetParent()
    self.tex = Texture:Load("Materials/Developer/bluegrid.tex")
end

function Script:PostRender(context)
    local a = Time:GetCurrent() /10
    local w = self.csize.x
    local h = self.csize.y
    local x = self.pos.x-(Math:Cos(a)*(w/2) - Math:Sin(a)*(h/2))
    local y = self.pos.y+(-Math:Sin(a)*(w/2) - Math:Cos(a)*(h/2))
    local scale = 1
    
    context:SetRotation(a)
    context:SetScale(1,1)   
        
    context:SetBlendMode(Blend.Alpha)
    context:SetColor(1,1,1,1)
    context:DrawImage(self.tex, x, y, self.csize.x, self.csize.y)
    context:SetRotation(0)
end

 

[post render rotate]

I see. You have to reset context:SetRotation(0) at the bottom.

[post render rotate]

Nope. I got the square moving all over the screen but it won't turn. Here's my script:

Script.pos = Vec2(242,234) -- Vec2 "Position"
Script.offset = Vec2(4,3) -- Vec2 "Offset"
Script.csize = Vec2(200,200) -- Vec2  "Size"
Script.square = Texture:Load("Materials/Developer/bluegrid.tex")

function Script:PostRender(context)
    Time:Update()
        
    local a = Time:GetCurrent()*0.1
   
    local x = self.pos.x
    local y = self.pos.y
    local w = self.csize.x
    local h = self.csize.y
        
    local scale = 1
    
    --context:SetRotation(a)
    context:SetScale(scale,scale)   
        
    context:SetBlendMode(Blend.Alpha)
    context:SetColor(1,1,1)
    context:DrawText(text,x,y)
    context:DrawImage(self.square, x-(Math:Cos(a)*(w) - Math:Sin(a)*(h)), y+(-Math:Sin(a)*(w) - Math:Cos(a)*(h)) , self.csize.x, self.csize.y)
    context:SetBlendMode(Blend.Solid)
end

[post render rotate]

Oh wait, I think I'm getting it.

[post render rotate]

How can you rotate one thing in PostRender() without rotating everything? Is there a way without using shaders?

[How can I fix this problem?]

Here's spectator.lua if you need it:

Script.movespeed=5.0--float "Move speed"
Script.movementsmoothing = 0.3--float "Move smoothness"
Script.radius = 0.5--float "Radius"
Script.lookspeed = 0.1--float "Look speed"
Script.looksmoothing = 0.5--float "Look smoothness"

function Script:Start()
    local window = Window:GetCurrent()
    self.mousepos = window:GetMousePosition()
    self.camerarotation = self.entity:GetRotation()
    if (self.entity:GetMass()==0) then
        self.entity:SetMass(10)
    end
    self.entity:SetGravityMode(false)
    self.entity:SetBuoyancyMode(false)
    self.entity:SetCollisionType(Collision.Projectile)
    if self.entity:GetShape()==nil then
        local shape = Shape:Sphere(0,0,0, 0,0,0, self.radius*2,self.radius*2,self.radius*2)
        self.entity:SetShape(shape)
        shape:Release()
    end
    self.entity:SetFriction(0,0)
    self.entity:SetElasticity(0)
    self.entity:SetSweptCollisionMode(true)
    self.listener = Listener:Create(self.entity)
    self.entity:SetBuoyancyMode(false)
end

--Collision filter so the spectator doesn't knock things over
function Script:Overlap(entity)
    if entity:GetMass()==0 then
        return Collision.Collide
    else
        return Collision.None
    end
end

function Script:UpdateWorld()
    local window = Window:GetCurrent()
    local cx = Math:Round(context:GetWidth()/2)
    local cy = Math:Round(context:GetHeight()/2)
    local mpos = window:GetMousePosition()
    window:SetMousePosition(cx,cy)
    local centerpos = window:GetMousePosition()
    if self.started then
        mpos = mpos * self.looksmoothing + self.mousepos * (1-self.looksmoothing)
        local dx = (mpos.x - centerpos.x) * self.lookspeed
        local dy = (mpos.y - centerpos.y) * self.lookspeed        
        self.camerarotation.x = self.camerarotation.x + dy
        self.camerarotation.y = self.camerarotation.y + dx
        self.mousepos = mpos
    else
        self.mousepos = Vec3(centerpos.x,centerpos.y,0)
        self.started=true
    end
end

function Script:UpdatePhysics()
    local move=0
    local strafe=0
    local ascension=0
    local window = Window:GetCurrent()
    if window:KeyDown(Key.W) or window:KeyDown(Key.Up) then move = move + self.movespeed end
    if window:KeyDown(Key.S) or window:KeyDown(Key.Down) then move = move - self.movespeed end
    if window:KeyDown(Key.D) or window:KeyDown(Key.Right) then strafe = strafe + self.movespeed end
    if window:KeyDown(Key.A) or window:KeyDown(Key.Left) then strafe = strafe - self.movespeed end
    if window:KeyDown(Key.Q) or window:KeyDown(Key.PageDown) then ascension = ascension - self.movespeed end
    if window:KeyDown(Key.E) or window:KeyDown(Key.PageUp) then ascension = ascension + self.movespeed end
    local currentvelocity = self.entity:GetVelocity(false)
    local desiredvelocity = Vec3(strafe,0,move) + Transform:Vector(0,ascension,0,nil,self.entity)
    local velocity = currentvelocity * self.movementsmoothing + desiredvelocity * (1.0-self.movementsmoothing)
    self.entity:AddForce((desiredvelocity - currentvelocity) * self.entity:GetMass() / self.movementsmoothing,false)
    self.entity:PhysicsSetRotation(self.camerarotation.x,self.camerarotation.y,self.camerarotation.z)
end

[Headshot Kills?]

Well so I was able to create a script that I can child to the head and drag in the top parent as an entity. I like this because I don't have to do anything to other scripts. It works but the only problem is when I set the material to Invisible.mat I get no bullet wound texture when shooting the head. The invisible texture hides that, too. Is there an easy way to fix that in this script? I can live without it but it irks me a bit.

Here's the script:

Script.parent= "" --entity "Parent"
Script.size = Vec3(0.30,0.34,0.34) -- Vec3 "Size"
Script.pos = Vec3(0,0.1,-0.07) -- Vec3 "Offset"
Script.damageMulti = 10 -- int "Damage Multiplier"

function Script:Start()

    self.head = self.entity:GetParent()
    self.health = self.parent.script.health

    self.box = Model:Sphere(8)
    self.box:SetScale(self.size)
    self.box:SetKeyValue(self.parent:GetKeyValue("type"))
    self.box:SetPosition(self.head:GetPosition(true))
    self.box:SetParent(self.entity,true)
    self.box:SetPickMode(self.parent:GetPickMode())
    self.box:Translate(self.pos)
    self.box:SetShadowMode(0)

    self.material = Material:Load("Materials/Effects/Invisible.mat")
    self.box:SetMaterial(self.material)

end

function Script:Hurt(damage,distributorOfPain)
    if self.health>0 then
        self.health = self.health - (damage * self.damageMulti)
        self.parent.script.health = self.parent.script.health - damage * self.damageMulti
        if self.health<=0 then
            self.health = 0
            self.parent.script.health = Math:Clamp(self.parent.script.health, 0, self.health)
            self.parent.script:SetMode("dying")
            self.box:Hide()
        end
    end
    return
end

 

[Headshot Kills?]

Ok I'll try it. Thanks guys.

[Headshot Kills?]

Ah ok. So this right here:

function Script:UpdateWorld()...

local enemy = self:FindScriptedParent(pickinfo.entity,"Hurt")

Ok so now how do I actually get that? You're talking about modifying the gun script?

[Headshot Kills?]

Oh yeah in the gun code. This one?

function Script:FindScriptedParent(entity,func)
    while entity~=nil do
        if entity.script then
            if type(entity.script[func])=="function" then
                --if entity.script.enabled~=false then
                    return entity
                --else
                --    return nil
                --end
            end
        end
        entity = entity:GetParent()
    end
    return nil
end

[Headshot Kills?]

Ok sorry I'm lost already. The pick position? Pass the pick and the Hurt() into the Headshot Box script? Actually that part makes sense but where is the pickposition? Are the entity children a table somewhere that I can iterate them? How do I find the exact limb? It's not as simple as:

Hurt()...

if self.headshotBox then

damage = 100

end

 

I can see I should have thought this through longer.

[Headshot Kills?]

You're saying I can reference the Hurt() function in the Headshot Box script?

[Headshot Kills?]

I tried making a hitbox like from your video, but in your video it's just one box and I can't make a distinction in damage on the limbs. I presume there is something I'm missing or did wrong, but I couldn't get that to work. In the AI script I referenced it in the Start() as:

self.headshotBox=self.entity:FindChild("Headshot Box")

I made a pivot and attached it to the head limb and attached a script that created a box there:

function Script:Start()
    self.head = self.entity:GetParent()
    material = Material:Load("HUD Elements/Materials/_original.mat")

    self.box = Model:Box(0.35,0.35,0.35)
    self.box:SetMaterial(material)
    self.box:SetPosition(self.head:GetPosition(true))
    self.box:SetParent(self.head,true)
    self.box:Translate(1,0,0)
end

 

The box works like this and reduces health with damage but now I don't know how to reference it. I'm assuming I could do something like in the AI script under the Hurt() function add an "if" statement but what? "If target? == self.headshotBox then...?"

Or should I add some kind of Hurt() function to the box itself?

 

 

[Headshot Kills?]

What's the best way to approach headshots? I tried messing with the AI script in the Hurt() function. I tried making a script that created a box around the head. I tried making a pick...seems like the best way would be to add an "if" statement in the AI script Hurt(damage) function by declaring the head but how?

[AI attack range]

Ok so I added this line in the HUD AI under ChooseTarget():

 if d < self.sightradius then

..so it looks like this:

function Script:ChooseTarget()
    local entities = GetEntityNeighbors(self.entity,self.sightradius,true)
    local k,entity
    for k,entity in pairs(entities) do
        if entity.script.teamid~=nil and entity.script.teamid~=0 and entity.script.teamid~=self.teamid then
            if entity.script.health>0 then
                local d = self.entity:GetDistance(entity)
                local pickinfo=PickInfo()
                if self.entity.world:Pick(self.entity:GetPosition()+Vec3(0,1.6,0),entity:GetPosition()+Vec3(0,1.6,0),pickinfo,0,false,Collision.LineOfSight)==false then
                    if d < self.sightradius then --added so they don't charge from any distance
                    return entity.script
                    end
                end
            end
        end
    end
end

 

Not sure why that's not in the original script. So to OP just what Macklebee suggested above, plus change this one line in your HUD AI script, save it as a prefab if you're spawning them, and also I have to change this line in the minimap script from a 1 to a 2 for the dots to appear:

local AABB = self.miniMapSphere:GetAABB(1)

...so it looks like:
local AABB = self.miniMapSphere:GetAABB(2)

[AI attack range]

Yeah that works. The sightrange is still off. I have to set it to -22 to walk up to the crawler. Should be at 0. Is there a way to compensate for that in the minimap script? Like add something to the table?

[AI attack range]

Are you using the minimap? Looks like it may be the minimap sphere. I deleted it and they worked normally.

[Variables in other scripts?]

How do you "loop over all entities in the world'? Talking about an AABB box?

 

[Numbers not showing up on screen?]

Ah yes! Thanks. That works.

[Numbers not showing up on screen?]

Thanks for the reply. I just tried your code here. Same problem. Not sure why but it's not working for me with the standard Leadwerks Main.lua. The only format that shows up is:

context:DrawText("Ammo: "..clip.. " | " ..Ammo, 20,108)

 

If I use Luawerks instead it works fine, they all show up. So if you have bought Luawerks you can switch the Main.lua back and forth and see. That's the best replication I have right now. I presumed someone would have encountered this and I know a lot of you guys can just troubleshoot these things in your head. Not sure what it is about the Luawerks system that makes it work that is missing in the original.

Here's one of my scripts where the text isn't showing up in case you want to see if I'm doing something wrong:

Script.overlayPath = "" --path "Texture" "Tex file (*tex):tex"
Script.timeBarColor = Vec4(255,128,0,255) --color "Timebar Color"
Script.fontColor = Vec4(1,1,1,0.8) -- color "Font Color"
Script.maxTime = 150 --int "Countdown Time"
Script.radius = 35 --int "Radius"
Script.cirPos = Vec2(100,180) --Vec2 "Circle Position"

function Script:Start()

    self.font = Font:Load("Fonts/arialbd.ttf", 10)

    self.player = self.entity:GetParent()
    self.camera = self.player.script.camera

    self.endtime = 0
    self.timer = self.maxTime

    if self.overlayPath ~= "" then
        self.overlay = Texture:Load(self.overlayPath)
    end
end

function Script:UpdateWorld()
    self.timer = self.timer - Time:GetSpeed()/100
    if     self.timer < self.endtime then
        self.timer = 0
        self:GameOver()
    end
end

function Script:GameOver()
    self.player.script.health = 0
    self.player.script:Kill()
    self.entity:Release()
end

function Script:PostRender(context)

    local x = 0
    local y = 0
    local r = self.radius
    local G = 1000
    local countdown = self.timer/self.maxTime
    local p = self.radius + self.radius/5

    w = context:GetWidth()/context:GetWidth() + self.cirPos.x
    h = context:GetHeight()/2 + self.cirPos.y

    context:SetBlendMode(1)
    
    --draw overlay
    if self.overlayPath ~= nil then
        context:SetColor(1,1,1,0.45)
        context:DrawImage(self.overlay, w-p, h-p, p*2, p*2)
    end

    -- draw circle
    for k = 0, G do
        a = 360 / G * k *(countdown)

        X = -(r * Math:Sin(a)) + x
        Y = -(r * Math:Cos(a)) + y

        context:SetColor(self.timeBarColor)
        context:DrawRect(X + w, Y + h, X/5 , Y/5, 1)
    end

    --draw text
    context:SetColor(self.fontColor)
    context:SetFont(self.font)
    context:DrawText(string.format("%.0f",self.timer), w-14, h-14, 30, 30, Text.VCenter+Text.Center)
end

[Numbers not showing up on screen?]

It appears this format shows up on start:

    context:DrawText("Ammo: "..clip.. " | " ..Ammo, 20,108)

...but this does not:

    context:DrawText(string.format("Ammo: "..clip.. " | " ..Ammo), 20, 108, 100, 30, Text.VCenter+Text.Center)

It works fine with ReepBlue's Luawerks so perhaps there's something missing in the Leadwerks Main.lua or Menu.lua which accounts for this? I just don't know where to look.