77 lines
2.2 KiB
Lua
77 lines
2.2 KiB
Lua
local tau = math.pi * 2
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local game = {}
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function love.load(arg)
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game.window_width, game.window_height = love.graphics.getDimensions()
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game.bubble_diameter = 60
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game.bubble_radius = game.bubble_diameter / 2
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-- vertical distance between bubble center points
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game.row_gap = math.ceil(math.sqrt(
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(game.bubble_diameter * game.bubble_diameter) -
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(game.bubble_radius * game.bubble_radius)
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))
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game.background_image = love.graphics.newImage('images/background.png')
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game.background_width = game.background_image:getWidth()
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local bubbles_wide = 8
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local bubbles_high = 14
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game.level_width = bubbles_wide * game.bubble_diameter
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game.level_height = (bubbles_high - 1) * game.row_gap + game.bubble_diameter
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game.level_x = (game.window_width - game.level_width) / 2
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game.level_y = game.bubble_radius
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game.launcher_image = love.graphics.newImage('images/launcher.png')
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game.launcher_height = game.launcher_image:getHeight()
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game.launcher_width = game.launcher_image:getWidth()
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game.launcher_x = game.window_width / 2
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game.launcher_y = game.level_y + game.level_height + game.bubble_diameter
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game.launcher_offset_x = 90 -- rotation point in launcher image
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game.launcher_offset_y = game.launcher_height / 2
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game.launcher_rotation = -tau / 4 -- up
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end
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function love.draw()
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-- draw background
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love.graphics.setColor(1, 1, 1, 1)
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love.graphics.draw(game.background_image, 0, 0)
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love.graphics.draw(game.background_image, game.background_width, 0)
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-- draw level border
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love.graphics.setColor(0, 0, 0, 1)
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love.graphics.rectangle(
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'line',
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game.level_x,
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game.level_y,
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game.level_width,
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game.level_height
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)
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-- draw launcher
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love.graphics.setColor(1, 1, 1, 1)
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love.graphics.draw(
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game.launcher_image,
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game.launcher_x,
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game.launcher_y,
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game.launcher_rotation,
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1,
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1,
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game.launcher_offset_x,
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game.launcher_offset_y
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)
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end
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function love.mousemoved(x, y, dx, dy, is_touch)
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local diff_x = x - game.launcher_x
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local diff_y = y - game.launcher_y
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game.launcher_rotation = math.atan2(diff_y, diff_x)
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end
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function love.keypressed(key, scan_code, is_repeat)
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if key == 'escape' then
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love.event.quit()
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end
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end
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