feat: add 6 lua games for basic1 console
- Pong: 2-player paddle and ball game with spin mechanics - Flappy Bird: gravity physics, obstacle avoidance - Breakout: paddle control, brick grid, collision detection - Simon Says: sequence memory, animation timing - Memory Match: pair matching, flip animations, grid layout - Tetris: falling blocks, grid system, line clearing - Asteroids: vector math, rotation, projectiles, enemy spawning All games follow API conventions with state machines, touch input, frame-based animation, and persistent game.vars state management.
This commit is contained in:
Adolfo Reyna
284
games/lua_examples/asteroids.lua
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284
games/lua_examples/asteroids.lua
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-- NAME: Asteroids
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-- DESC: Destroy asteroids, avoid collisions
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-- Game states
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local STATE_MENU = 0
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local STATE_PLAYING = 1
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local STATE_GAME_OVER = 2
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-- Game constants
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local SHIP_SPEED = 2
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local SHIP_ROTATION_SPEED = 8
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local BULLET_SPEED = 5
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local ASTEROID_SPAWN_RATE = 120
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local ASTEROID_SPEEDS = {1.5, 2, 2.5, 3}
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function init()
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game.vars.state = STATE_MENU
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game.vars.score = 0
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game.vars.level = 1
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-- Ship
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game.vars.ship_x = game.width() / 2
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game.vars.ship_y = game.height() / 2
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game.vars.ship_angle = 0 -- Radians
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game.vars.ship_vel_x = 0
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game.vars.ship_vel_y = 0
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game.vars.thrusting = false
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-- Bullets
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game.vars.bullets = {}
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game.vars.bullet_cooldown = 0
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-- Asteroids
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game.vars.asteroids = {}
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game.vars.frame_count = 0
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-- Enable continuous updates
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game.set_frame_updates(true)
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print("Asteroids initialized")
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end
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function update(event)
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local state = game.vars.state
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if state == STATE_MENU then
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if event.type == INPUT.TOUCH_DOWN or event.type == INPUT.BUTTON_0 or event.type == INPUT.BUTTON_1 then
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reset_game()
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game.vars.state = STATE_PLAYING
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return true
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end
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elseif state == STATE_PLAYING then
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-- Handle input
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if event.type == INPUT.TOUCH_DOWN or event.type == INPUT.TOUCH_MOVE then
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if event.x < game.width() / 2 then
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-- Left side: rotate counter-clockwise
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game.vars.ship_angle = game.vars.ship_angle - SHIP_ROTATION_SPEED * 0.017
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else
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-- Right side: rotate clockwise
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game.vars.ship_angle = game.vars.ship_angle + SHIP_ROTATION_SPEED * 0.017
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end
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-- Thrust
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game.vars.thrusting = true
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else
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game.vars.thrusting = false
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end
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-- Update physics on frame tick
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if event.type == INPUT.FRAME_TICK then
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update_ship()
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update_bullets()
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update_asteroids()
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check_collisions()
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-- Spawn asteroids
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game.vars.frame_count = game.vars.frame_count + 1
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if game.vars.frame_count >= ASTEROID_SPAWN_RATE then
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spawn_asteroid(game.width() / 2, game.height() / 2, 3)
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game.vars.frame_count = 0
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end
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return true
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end
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elseif state == STATE_GAME_OVER then
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if event.type == INPUT.TOUCH_DOWN or event.type == INPUT.BUTTON_0 or event.type == INPUT.BUTTON_1 then
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game.vars.state = STATE_MENU
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return true
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end
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end
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return false
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end
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function draw()
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renderer.clear(false) -- Black background
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local state = game.vars.state
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if state == STATE_MENU then
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renderer.text(game.width() / 2 - 35, game.height() / 2 - 30, "ASTEROIDS", true)
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renderer.text(game.width() / 2 - 50, game.height() / 2, "Tap to Start", true)
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elseif state == STATE_PLAYING or state == STATE_GAME_OVER then
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-- Draw asteroids
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for i = 1, #game.vars.asteroids do
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local ast = game.vars.asteroids[i]
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renderer.circle(ast.x, ast.y, ast.size, true, false)
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end
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-- Draw bullets
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for i = 1, #game.vars.bullets do
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local bullet = game.vars.bullets[i]
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renderer.pixel(bullet.x, bullet.y, true)
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end
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-- Draw ship
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local ship_size = 6
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local nose_x = game.vars.ship_x + math.cos(game.vars.ship_angle) * ship_size
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local nose_y = game.vars.ship_y + math.sin(game.vars.ship_angle) * ship_size
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local back_x = game.vars.ship_x - math.cos(game.vars.ship_angle) * (ship_size / 2)
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local back_y = game.vars.ship_y - math.sin(game.vars.ship_angle) * (ship_size / 2)
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renderer.line(game.vars.ship_x, game.vars.ship_y, nose_x, nose_y, true, 1)
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renderer.line(back_x, back_y, nose_x, nose_y, true, 1)
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-- Draw thrust indicator
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if game.vars.thrusting then
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local flame_x = game.vars.ship_x - math.cos(game.vars.ship_angle) * ship_size
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local flame_y = game.vars.ship_y - math.sin(game.vars.ship_angle) * ship_size
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renderer.line(game.vars.ship_x, game.vars.ship_y, flame_x, flame_y, true, 1)
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end
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-- Draw score
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renderer.text(10, 10, "Score: " .. tostring(game.vars.score), true)
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renderer.text(10, 20, "Level: " .. tostring(game.vars.level), true)
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if state == STATE_GAME_OVER then
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renderer.text(game.width() / 2 - 40, game.height() / 2, "GAME OVER", true)
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renderer.text(game.width() / 2 - 50, game.height() / 2 + 20, "Tap to Menu", true)
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end
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end
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end
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function update_ship()
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if game.vars.thrusting then
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game.vars.ship_vel_x = game.vars.ship_vel_x + math.cos(game.vars.ship_angle) * SHIP_SPEED
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game.vars.ship_vel_y = game.vars.ship_vel_y + math.sin(game.vars.ship_angle) * SHIP_SPEED
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end
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-- Friction
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game.vars.ship_vel_x = game.vars.ship_vel_x * 0.98
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game.vars.ship_vel_y = game.vars.ship_vel_y * 0.98
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-- Move ship
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game.vars.ship_x = game.vars.ship_x + game.vars.ship_vel_x
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game.vars.ship_y = game.vars.ship_y + game.vars.ship_vel_y
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-- Wrap around screen
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if game.vars.ship_x < 0 then game.vars.ship_x = game.width() end
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if game.vars.ship_x > game.width() then game.vars.ship_x = 0 end
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if game.vars.ship_y < 0 then game.vars.ship_y = game.height() end
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if game.vars.ship_y > game.height() then game.vars.ship_y = 0 end
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end
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function update_bullets()
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-- Update existing bullets
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for i = #game.vars.bullets, 1, -1 do
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local bullet = game.vars.bullets[i]
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bullet.x = bullet.x + bullet.vel_x
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bullet.y = bullet.y + bullet.vel_y
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-- Remove if off-screen
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if bullet.x < 0 or bullet.x > game.width() or bullet.y < 0 or bullet.y > game.height() then
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table.remove(game.vars.bullets, i)
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end
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end
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-- Fire bullet
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game.vars.bullet_cooldown = math.max(0, game.vars.bullet_cooldown - 1)
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if game.vars.thrusting and game.vars.bullet_cooldown == 0 then
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local bullet_x = game.vars.ship_x + math.cos(game.vars.ship_angle) * 8
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local bullet_y = game.vars.ship_y + math.sin(game.vars.ship_angle) * 8
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table.insert(game.vars.bullets, {
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x = bullet_x,
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y = bullet_y,
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vel_x = math.cos(game.vars.ship_angle) * BULLET_SPEED + game.vars.ship_vel_x,
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vel_y = math.sin(game.vars.ship_angle) * BULLET_SPEED + game.vars.ship_vel_y
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})
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game.vars.bullet_cooldown = 5
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end
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end
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function update_asteroids()
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for i = 1, #game.vars.asteroids do
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local ast = game.vars.asteroids[i]
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ast.x = ast.x + ast.vel_x
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ast.y = ast.y + ast.vel_y
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-- Wrap around screen
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if ast.x < -ast.size then ast.x = game.width() + ast.size end
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if ast.x > game.width() + ast.size then ast.x = -ast.size end
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if ast.y < -ast.size then ast.y = game.height() + ast.size end
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if ast.y > game.height() + ast.size then ast.y = -ast.size end
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end
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end
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function check_collisions()
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-- Bullet-asteroid collisions
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for b = #game.vars.bullets, 1, -1 do
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local bullet = game.vars.bullets[b]
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for a = #game.vars.asteroids, 1, -1 do
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local ast = game.vars.asteroids[a]
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local dx = bullet.x - ast.x
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local dy = bullet.y - ast.y
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local dist = math.sqrt(dx * dx + dy * dy)
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if dist < ast.size then
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-- Hit!
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table.remove(game.vars.bullets, b)
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table.remove(game.vars.asteroids, a)
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game.vars.score = game.vars.score + (4 - ast.size) * 50
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-- Spawn smaller asteroids
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if ast.size > 1 then
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for _ = 1, 2 do
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spawn_asteroid(ast.x, ast.y, ast.size - 1)
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end
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end
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break
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end
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end
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end
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-- Ship-asteroid collisions
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for i = 1, #game.vars.asteroids do
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local ast = game.vars.asteroids[i]
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local dx = game.vars.ship_x - ast.x
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local dy = game.vars.ship_y - ast.y
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local dist = math.sqrt(dx * dx + dy * dy)
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if dist < ast.size + 6 then
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game.vars.state = STATE_GAME_OVER
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end
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end
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end
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function spawn_asteroid(x, y, size)
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if size < 1 then return end
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local speed = ASTEROID_SPEEDS[size]
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local angle = math.random() * math.pi * 2
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table.insert(game.vars.asteroids, {
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x = x,
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y = y,
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size = size,
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vel_x = math.cos(angle) * speed,
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vel_y = math.sin(angle) * speed
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})
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end
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function reset_game()
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game.vars.score = 0
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game.vars.level = 1
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game.vars.ship_x = game.width() / 2
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game.vars.ship_y = game.height() / 2
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game.vars.ship_angle = 0
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game.vars.ship_vel_x = 0
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game.vars.ship_vel_y = 0
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game.vars.bullets = {}
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game.vars.asteroids = {}
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game.vars.frame_count = 0
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spawn_asteroid(game.width() / 2 - 40, game.height() / 2 - 40, 3)
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spawn_asteroid(game.width() / 2 + 40, game.height() / 2 + 40, 3)
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end
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