CodingPirates/godot-demo-projects
1
0
Fork 0
mirror of https://github.com/godotengine/godot-demo-projects.git synced 2026-01-08 08:50:07 +01:00
Code Issues Packages Projects Releases Wiki Activity

Automatic brake/reverse

Browse Source 
Value fwd_mps converts global velocity into a velocity vector which is rotated to cars local coordinate system (in this example x-axis).
Then if key "ui_down" is pressed and the fwd_mps value is greater or equal to -1 (which seems to be very good spot and represents car still moving forward but nearly standing still) the car reverses (negative engine_force_value). If this condition isn't met (which means the car is moving forward) then the car brakes.

Tested and working on Godot 3.1 Beta 3.

Suggestions:
In this case, if you want something more realistic, the -engine_force_value can be much lower because no car reverses in same speed as it goes forward but for the sake of demo project I left it as it is.

Created for my own project with help of user wombatstampede from godotdevelopers.org/forum
This commit is contained in:
Ivan Kmeťo
2019-02-06 05:59:45 +01:00
committed by GitHub
parent a6ce6dbf4c
commit bded14a506
1 changed files with 6 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
3d/truck_town/vehicle.gd
View File

@@ -10,6 +10,8 @@ var steer_target = 0
export var engine_force_value = 40
func _physics_process(delta):
var fwd_mps = transform.basis.xform_inv(linear_velocity).x
if Input.is_action_pressed("ui_left"):
steer_target = STEER_LIMIT
elif Input.is_action_pressed("ui_right"):
@@ -23,7 +25,10 @@ func _physics_process(delta):
engine_force = 0
if Input.is_action_pressed("ui_down"):
brake = 1
if (fwd_mps >= -1):
engine_force = -engine_force_value
else:
brake = 1
else:
brake = 0.0