basic player movement

obj/game/Player.lua

@@ -10,10 +10,37 @@ function Player:new(area, x, y, opts)
 
     self.w, self.h = 12, 12
     self.collider = self.area.world:circle(self.x, self.y, math.floor(self.w*0.8))
+
+    -- player angle
+    self.r = -math.pi/2
+    -- velocity of player angle rotation
+    self.rv = 1.66*math.pi
+    -- player velocity
+    self.v = 0
+    -- max player velocity
+    self.max_v = 100
+    -- player acceleration
+    self.a = 100
 end
 
 function Player:update(dt)
     Player.super.update(self, dt)
+
+    -- controls
+    if input:down('left') then self.r = self.r - self.rv*dt end
+    if input:down('right') then self.r = self.r + self.rv*dt end
+
+    -- update velocity
+    self.v = math.min(self.v + self.a*dt, self.max_v)
+
+    -- update position
+    local vx = self.v * math.cos(self.r)  -- velocity X
+    local vy = self.v * math.sin(self.r)  -- velocity Y
+    self.x = self.x + vx * dt             -- update position X
+    self.y = self.y + vy * dt             -- update position Y
+
+    -- move collision area
+    self.collider:moveTo(self.x, self.y)
 end
 
 function Player:draw()