add throttle

asteroids/actors.lua

@@ -83,6 +83,7 @@ function actors.buildActors(game)
             spin = 0,
             facing = phys.tau * 3 / 4,
             radius = game.ship.radius,
+            throttle = 0,
         }
         for k, v in pairs(game.ship) do
             instance[k] = v

asteroids/main.lua

@@ -17,6 +17,7 @@ local function initGame()
                 sound = love.sound.newSoundData('resources/bullet.mp3'),
             },
             sprite = love.graphics.newImage('resources/playerShip1_blue.png'),
+            maxThrust = 200,
         },
         asteroids = {
             stages = {
@@ -29,7 +30,6 @@ local function initGame()
         controls = {
             ship = {
                 turnRate = 10,
-                maxThrust = 200,
             },
         },
     }
@@ -94,9 +94,10 @@ end
 
 function love.update(dt)
     if state.controls.joystick ~= nil then
-        local thrust = state.controls.joystick:getGamepadAxis('triggerright') * game.controls.ship.maxThrust
-        if thrust > 0 then
-            phys.apply(state.ship, { speed = thrust * dt, angle = state.ship.facing })
+        state.ship.throttle = state.controls.joystick:getGamepadAxis('triggerright')
+        if state.ship.throttle > 0 then
+            local speed = state.ship.throttle * state.ship.maxThrust * dt
+            phys.apply(state.ship, { speed = speed, angle = state.ship.facing })
         end
 
         local spin = state.controls.joystick:getGamepadAxis('leftx') * game.controls.ship.turnRate