Allow cars to customize engine brake torque

StyledStrike · Jan 6, 2025 · 7b474ee · 7b474ee
1 parent 2a066b3
commit 7b474ee
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Showing 3 changed files with 12 additions and 5 deletions.
diff --git a/lua/entities/base_glide_car/sv_engine.lua b/lua/entities/base_glide_car/sv_engine.lua
@@ -7,6 +7,7 @@ function ENT:EngineInit()
 
     self.flywheelFriction = -7000
     self.flywheelTorque = 20000
+    self.engineBrakeTorque = 500
 
     -- Fake engine variables
     self.reducedThrottle = false
@@ -133,11 +134,11 @@ end
 
 local Remap = math.Remap
 
-function ENT:GetTransmissionTorque( gear )
-    local torque = Remap( self:GetFlywheelRPM(), self:GetMinRPM(), self:GetMaxRPM(), self:GetMinRPMTorque(), self:GetMaxRPMTorque() )
+function ENT:GetTransmissionTorque( gear, minTorque, maxTorque )
+    local torque = Remap( self:GetFlywheelRPM(), self:GetMinRPM(), self:GetMaxRPM(), minTorque, maxTorque )
 
     -- Validation
-    torque = Clamp( torque, self:GetMinRPMTorque(), self:GetMaxRPMTorque() )
+    torque = Clamp( torque, minTorque, maxTorque )
 
     -- Clutch
     torque = torque * ( 1 - self.clutch )
@@ -360,15 +361,17 @@ function ENT:EngineThink( dt )
     end
 
     throttle = self:GetEngineThrottle()
-    gearTorque = self:GetTransmissionTorque( gear )
+    gearTorque = self:GetTransmissionTorque( gear, self:GetMinRPMTorque(), self:GetMaxRPMTorque() )
     availableTorque = gearTorque * throttle
 
     -- Simulate engine braking
     if transmissionRPM < 0 then
         -- The vehicle is moving against the current gear, do some hard engine braking.
         availableTorque = availableTorque + gearTorque * 2
     else
-        availableTorque = availableTorque - gearTorque * ( 1 - throttle ) * 0.5
+        -- The vehicle is coasting, apply a custom engine brake torque.
+        local engineBrakeTorque = self:GetTransmissionTorque( gear, self.engineBrakeTorque, self.engineBrakeTorque )
+        availableTorque = availableTorque - engineBrakeTorque * ( 1 - throttle ) * 0.5
     end
 
     -- Limit the engine RPM, check if it's redlining

diff --git a/lua/entities/gtav_insurgent.lua b/lua/entities/gtav_insurgent.lua
@@ -189,6 +189,8 @@ if SERVER then
     end
 
     function ENT:CreateFeatures()
+        self.engineBrakeTorque = 1300
+
         self:SetBrakePower( 3800 )
         self:SetDifferentialRatio( 3.3 )
         self:SetPowerDistribution( -0.4 )

diff --git a/lua/entities/gtav_speedo.lua b/lua/entities/gtav_speedo.lua
@@ -61,6 +61,8 @@ if SERVER then
     }
 
     function ENT:CreateFeatures()
+        self.engineBrakeTorque = 600
+
         self:SetSpringStrength( 700 )
         self:SetSteerConeMaxSpeed( 1000 )
         self:SetForwardTractionBias( -0.15 )