--[[ effects.lua -- Effect configuration file for Evil Dead 3

This script supplies configuration information for various effects.

The data can be stored either in a variable:

	coolEffectColor = { 0.5, 0.75, 0.25, 1.0 }	-- R,G,B,A

or in a function:

	function coolEffectColor()
		return { 0.5, 0.75, 0.25, 1.0 }	-- R,G,B,A
	end

Functions are useful for keeping state information or adding randomness

Queries for physics objects should return data in one of the following formats:
	{ mass, linearDamping, angularDamping, friction, restitution, radius }						-- Sphere type
	{ mass, linearDamping, angularDamping, friction, restitution, radiusX, radiusY, radiusZ }	-- Box type

Specify particle effects by name, with optional parameters (use -1 for defaults):  { "effectName", additiveBlending, minLifetime, maxLifetime }

C++ functions that can be called:
	PreloadParticle(name)	-- Makes sure the specified particle effect is loaded
	PreloadTexture(name)	-- Makes sure the specified texture is loaded
	Random()				-- Returns a random number in the range [0,1)
	Random(limit)			-- Returns a random number in the range [0,limit)
	Random(min,max)			-- Returns a random number in the range [min,max)


--------------- CODE BEGINS HERE -------------- ]]

print( "LUA: Processing effects configuration file" )


----------------------------------------------------------------------------
----------------------------- Utility Functions ----------------------------


-- Returns a random integer number in the range [min,max] (note inclusive)
function RandomInt(min,max)
	local val = Random()				-- Get a value in the range [0,1)
	val = min + val * (max + 1 - min)	-- Scale it to the range [min,max+1)
	return math.floor( val )			-- Integerize it and get the range [min,max]
end


----------------------------------------------------------------------------
------------------------------ Generic -------------------------------------

-- Soft limit on the number of active non-shadow decals in the world
decalLimit = 64

-- Fade rate for expired decals
decalDeadFade = 0.1

-- Allowable distance a decal can be away from a surface before it will be considered "floating",
-- and the time it will take to fade away if it is floating
decalFloatingCheck = { 0.2, 1.0 }



-- Parameters used for cuttable piece dynamics:  { gravity, minRotationRateInDegrees, maxRotationRateInDegrees }
cuttableSettings = { -3.5, 45, 720 }

-- Velocity of a cut piece
function cuttableVelocity()
	return { Random( -0.5, 0.5 ), Random( 1.5, 3.5 ), Random( -0.5, 0.5 ) }
end

-- Projected shadow settings: { intensity, maxAngle (in degrees), cameraDistance }
shadowSettings = { 0.4, 30, 4.0, 128 }


-- Texture used for the pool of blood
bloodSplatTexture = "bld_spat"

-- Parameters for an expanding pool:  { startSize, maxSize, expandRate, lifetime }
bloodPoolParams = { 0.001, 1.5, 0.15, 40 }

-- Texture used for bloody footprints
bloodyFootprintTexture = "bl_foot"

-- Parameters for bloody footprints:  { size, trackingLifetime, decalLifetime }
bloodyFootprintParams = { 0.125, 10, 40 }

-- Texture used for Sam Spirit run footprints
spiritFootprintTexture = "samPrint"

-- Parameters for spirit footprints;  { size, trackingLifetime, decalLifetime }
spiritFootprintParams = { 0.125, 10, 40 }

-- Texture used for Ash Rage Shockwave
ashRageShockwave = "s_ring1"

----------------------------------------------------------------------------
----------------------------- Chainsaw -------------------------------------

-- Motion trail { nearDist, farDist, sliceLength, vertexBufferSize } --
chainsawMotionTrailSettings = { 0.15, 0.75, .25, 72 }
-- { initialAlpha, fadeRate } Fade rate is per frame.  Assume 30Hz. --
chainsawMotionTrailAlpha = { 50, 20 }
-- Texture
chainsawMotionTrailTexture = "cs_swing"

-- Preload any resources needed for motion trail
function chainsawMotionTrailPreload()

end

-- Number of frames the blood trail is active
chainsawBloodTrailFrames = 5

-- Particle effects --
chainsawParticleIdle = { "chs_idle" , 1, -1, -1 }
chainsawParticleAttack = { "chs_idle", 1, -1, -1 }
chainsawBloodParticle = "bld_sqrt"

-- Blood splatter texture --
function chainsawBloodTexture()
	return "bld_0" .. RandomInt( 1, 4 )
end

-- Process all possible resources to avoid load delays when they are used --
function chainsawPreload()

end

-- Calculate the size of the blood decal based on the distance from the creature to the wall --
function chainsawBloodSize( dist )
	return 0.01 + dist * 0.2				-- Apply a minimum size and standard scaling factor
end

-- Maximum distance blood can be spattered
chainsawBloodRange = 5

-- Distance from the chainsaw origin where we begin searching for walls to splatter blood.
-- This is to avoid false positives in the collision detection at ground zero.
chainsawBloodStartDist = 0.25


----------------------------------------------------------------------------
--------------------------- Harpoon Gun ------------------------------------

-- Texture used for the harpoon rope effect
harpoonRopeTexture = "rope"

-- Harpoon rope effect { numControlPoints, numSegments, tangentFactor } --
harpoonRopeSettings1 = { 6, 32, 0.6 }

-- Harpoon rope effect { ropeWidth, maxWiggleDistY, maxWiggleDistSideways, textureDensity } --
harpoonRopeSettings2 = { 0.02, 0.9, 0.475, 4.5 }




----------------------------------------------------------------------------
----------------------------- Shotgun --------------------------------------

-- Particle effects --
shotgunBloodParticleEnter = { "bld_sml", -1, -1, -1 }
shotgunBloodParticleExit = { "bld_lrg", -1, -1, -1 }
shotgunWallHitParticle = "chs_hitW"


-- Blood splatter texture --
function shotgunBloodTexture()
	return "bld_0" .. RandomInt( 1, 4 )
end

-- Lifetime of a blood spatter
shotgunBloodLifetime = 60

-- Texture used when the pellets hit a wall --
shotgunPelletTexture = "imgNull"

-- Lifetime of a bullet hole
shotgunPelletLifetime = 0	-- Zero means no fade until the limit is reached


-- Calculate the size of the blood decal based on the distance from the creature to the wall --
function shotgunGetBloodSize( dist )
	if (dist > 8) then return 0 end			-- Limit the distance a spatter can be projected
	local scale = math.pow( dist, 1.35 )	-- Do a non-linear scaling
	local size = 0.01 + scale * 0.15		-- Apply a minimum size and standard scaling factor
	if (size > 0.8)	then					-- Clamp the result
		size = 0.8
	end
	return size
end



----------------------------------------------------------------------------
------------------------ Projectile Weapons --------------------------------

-- Process all possible resources to avoid load delays when they are used --
function projweapPreload()
	-- Partile effects

	-- Textures
	
end

-- Size of a bullet hole in the wall
projweapBulletHoleSize = 0.025

----------------------------------------------------------------------------
-------------------------- Breaking Glass ----------------------------------

-- Texture used for breaking glass effect
breakingGlassTexture = "whiteash"

-- Glass shards will "reflect" light as they move
breakingGlassLightDir = { 0.57735, 0.57735, 0.57735 }

-- Determine the shared parameters for a pane of glass:  { gravity, endingAltitudeFactor, minAlpha }
breakingGlassParams = { -5.5, -2.0, 0.1 }

-- Calculate the linear velocity for a shard of glass
function breakingGlassShardLinearVelocity( distFromImpactPoint, impulse )
	-- Do a quadratic falloff
	local force = 1 - distFromImpactPoint;
	return (1 - force * force) * impulse * 0.25
end

-- Calculate the angular velocity for a shard of glass
function breakingGlassShardAngularVelocity( distFromImpactPoint, impulse )
	-- Do a linear falloff
	local force = 1 - distFromImpactPoint
	if (force < 0) then
		force = 0.01
	end
	return force * impulse * 0.07216
end

-- Preload resources that will be used later in order to avoid delays
function breakingGlassPreload()
	
end


----------------------------------------------------------------------------
------------------------------ Throwables ----------------------------------

throwableDefaultModel = "thw_dynomite"
throwableDefaultPhysicsObject = { 1.0, 0.8, 0.20, 0.65, 0.1, 0.30, 0.40, 0.30 }
throwableDefaultParticleEffect = { "tnt_lit", 1 }
throwableDefaultAngularVel = { 7.0, 6.0, 9.0 }


----------------------------------------------------------------------------
------------------------------ Severing  ----------------------------------

severingFXDust = { "hit_bone", 0 }
severingFXBloodRed = { "bld_spry", 0, 0, -1 }
severingFXBloodBlue = { "bld_burst", 0 }
severingFXBloodBlack = { "smk_car", 0 }
severingFXBloodGreen = { "mi_steamL", 0 }
severingFXBlunt = { "hit_soft", 0 }


----------------------------------------------------------------------------
----------------------------- Collectibles ---------------------------------

-- Particle effects --
smallHealthEffect = "pupsh_fx"
smallMoneyEffect  = "pupsm_fx"


----------------------------------------------------------------------------
-------------------------------- Water -------------------------------------

waterEnterEffect = "wtr_splash"
waterExitEffect = "wtr_splshExt"
waterWadingEffect = "my_null"
waterRippleTexture = "wtrWake"

-- Lifetime is in seconds.
waterRippleLifetime = 1.75

-- Minimum and Maximum Sizes are in world space units, and are the starting and
-- end sizes of the ripples.
waterWakeMinimumSize = 0.33
waterWakeMaximumSize = 2.50

-- Maximum alpha is used when moving quickly through water, while Minimum alpha
-- is used when standing still in water.
waterWakeMaximumAlpha = 64
waterWakeMinimumAlpha = 32

-- Ripple delay is specified in seconds. Minimum delay is used when moving
-- quickly through water, while Maximum delay is used when standing still in
-- water.
waterWakeMinimumRippleDelay = 0.15
waterWakeMaximumRippleDelay = 1.00


----------------------------------------------------------------------------
----------------------- Weaponeer Motion Trail -----------------------------

-- Motion trail { nearDist, farDist, sliceLength, vertexBufferSize } --
weaponeerMotionTrailSettings = { 0.15, 0.75, .25, 72 }
-- { initialAlpha, fadeRate } Fade rate is per frame.  Assume 30Hz. --
weaponeerMotionTrailAlpha = { 50, 20 }
-- Texture
weaponeerMotionTrailTexture = "cs_swing"

-- Preload any resources needed for motion trail
function weaponeerMotionTrailPreload()
	
end


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