Asteroids

main.lua

@@ -0,0 +1,58 @@
+local love = require("love")
+
+function love.load()
+    arenaWidth = 800
+    arenaHeight = 600
+    shipX = arenaWidth / 2
+    shipY = arenaHeight / 2
+    shipAngle = 0
+    shipSpeedX = 0
+    shipSpeedY = 0
+end
+
+function love.update(dt)
+    local turnSpeed = 10
+    if love.keyboard.isDown('right') then
+        shipAngle = shipAngle + turnSpeed * dt
+    end
+    if love.keyboard.isDown('left') then
+        shipAngle = shipAngle - turnSpeed * dt
+    end
+    shipAngle = shipAngle % (2 * math.pi)
+
+    if love.keyboard.isDown('up') then
+        local shipSpeed = 100
+        shipSpeedX = shipSpeedX + math.cos(shipAngle) * shipSpeed * dt
+        shipSpeedY = shipSpeedY + math.sin(shipAngle) * shipSpeed * dt
+    end
+
+    shipX = (shipX + shipSpeedX * dt) % arenaWidth
+    shipY = (shipY + shipSpeedY * dt) % arenaHeight
+end
+
+function love.draw()
+    for y = -1, 1 do
+        for x = -1, 1 do
+            love.graphics.origin()
+            love.graphics.translate(x * arenaWidth, y * arenaHeight)
+            love.graphics.setColor(0, 0, 1)
+            love.graphics.circle('fill', shipX, shipY, 30)
+            local shipCircleDistance = 20
+            love.graphics.setColor(0, 1, 1)
+            love.graphics.circle(
+                'fill',
+                shipX + math.cos(shipAngle) * shipCircleDistance,
+                shipY + math.sin(shipAngle) * shipCircleDistance,
+                5
+            )
+        end
+    end
+
+    love.graphics.origin()
+    love.graphics.setColor(1, 1, 1)
+    love.graphics.print(table.concat({
+        'shipAngle:' .. shipAngle,
+        'shipX: ' .. shipX,
+        'shipSpeedX: ' .. shipSpeedX,
+    }, '\n'))
+end