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third person character capsule collision

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This commit is contained in:
Turanszki Janos
2020-04-20 20:27:11 +01:00
parent c2d639a2fc
commit 997b348794
6 changed files with 315 additions and 51 deletions
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scripts/character_controller_tps.lua
+17 -11
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@@ -192,9 +192,9 @@ Character = {
end
end
self.state_prev = self.state
-- gravity:
self.force = vector.Add(self.force, Vector(0,-9.8 * 20,0))
self.force = vector.Add(self.force, Vector(0,-9.8 * 15,0))
-- apply force:
self.velocity = vector.Add(self.velocity, vector.Multiply(self.force, 0.016))
@@ -203,8 +203,8 @@ Character = {
-- Sphere collider for character:
local radius = 0.7
local sphere = Sphere(vector.Add(model_transform.GetPosition(), Vector(0,radius)), radius)
local pp = sphere.GetCenter()
local intersection = false
local original_spherecenter = sphere.GetCenter()
local ground_intersection = false
local ccd = 0
local ccd_max = 5
while(ccd < ccd_max) do
@@ -213,33 +213,39 @@ Character = {
local prevpos = sphere.GetCenter()
sphere.SetCenter(vector.Add(prevpos, step))
local o2, p2, n2, depth = SceneIntersectSphere(sphere, PICK_OPAQUE, ~self.layerMask)
local o2, p2, n2, depth = SceneIntersectCapsule(sphere, 3, PICK_OPAQUE, ~self.layerMask)
if(o2 ~= INVALID_ENTITY) then
DrawPoint(p2,0.5,Vector(1,1,0,1))
DrawLine(p2, vector.Add(p2, n2), Vector(1,1,0,1))
-- Slide on surface:
-- Slide on contact surface:
local velocityLen = self.velocity.Length()
local velocityNormalized = self.velocity.Normalize()
local undesiredMotion = n2:Multiply(vector.Dot(velocityNormalized, n2))
local desiredMotion = vector.Subtract(velocityNormalized, undesiredMotion)
self.velocity = vector.Multiply(desiredMotion, velocityLen)
intersection = true
sphere.SetCenter(vector.Add(sphere.GetCenter(), vector.Multiply(n2, depth))) -- remove penetration
-- Remove penetration (penetration upscaled to avoid precision error):
sphere.SetCenter(vector.Add(sphere.GetCenter(), vector.Multiply(n2, depth * 1.2)))
-- Check whether it is intersecting the ground (ground normal is upwards)
if(vector.Dot(n2, Vector(0,1,0)) > 0) then
ground_intersection = true
end
end
end
--DrawPoint(sphere.GetCenter(), 0.5, Vector(0,1,0,1))
if intersection then
self.velocity = vector.Multiply(self.velocity, 0.87) -- ground friction
if ground_intersection then
self.velocity = vector.Multiply(self.velocity, 0.85) -- ground friction
else
self.velocity = vector.Multiply(self.velocity, 0.94) -- air friction
end
if(vector.Length(self.velocity) < 0.001) then
self.state = self.states.STAND
end
model_transform.Translate(vector.Subtract(sphere.GetCenter(), pp))
model_transform.Translate(vector.Subtract(sphere.GetCenter(), original_spherecenter)) -- transform by the sphere offset
model_transform.UpdateTransform()
-- try to put water ripple if character head is directly above water