Initial commit

main.lua

@@ -0,0 +1,129 @@
+function dump(o)
+  s = "X: " .. o.x .. "\tY:" .. o.y
+  return s
+end
+
+function generate_ball(x, y, angle, dir, radius)
+  local vel_x = math.sin(angle) * 100 * dir
+  local vel_y = math.cos(angle) * 100
+  return {
+    x = x,
+    y = y,
+    vel_x = vel_x,
+    vel_y = vel_y,
+    radius = radius
+  }
+end
+
+function love.load()
+  love.graphics.setBackgroundColor(0, 0, 0)
+  love.window.setMode(500, 700, {resizable=false})
+  player_x = 250
+  player_y = 640
+  flag = false
+  is_active = false
+  cursor_press = {}
+  cursor_move = {}
+  angle = 0
+  dir = 0
+  touch_id = nil
+  total_balls = 10
+  remaining_balls = 0
+  balls = {}
+end
+
+function love.draw()
+  love.graphics.setColor(180, 180, 180, 255)
+  -- love.graphics.circle("fill", ball_x, ball_y, 10)
+  love.graphics.circle("fill", player_x, player_y, 10)
+  if flag then
+    love.graphics.setColor(180, 180, 180, 255)
+    love.graphics.print("move " .. dump(cursor_move), 10, 10)
+    love.graphics.print("press " .. dump(cursor_press), 10, 30)
+    love.graphics.print("angle " .. angle, 10, 50)
+    love.graphics.line(cursor_press.x, cursor_press.y, cursor_press.x, cursor_move.y, cursor_move.x, cursor_move.y, cursor_press.x, cursor_press.y)
+    local point_x = player_x + (math.sin(angle) * 100) * dir
+    local point_y = player_y + (math.cos(angle) * 100)
+    love.graphics.line(player_x, player_y, point_x, point_y)
+  end
+  if active then
+    for ball in balls do
+      love.graphics.circle("fill", ball.x, ball.y, ball.radius)
+    end
+  end
+end
+
+function love.update(dt)
+  if flag then
+    if touch_id == nil then
+      cursor_move = {x = love.mouse.getX(), y = love.mouse.getY()}
+    else
+      x, y = love.touch.getPosition(touch_id)
+      cursor_move = {x = x, y = y}
+    end
+    if cursor_move.y <= cursor_press.y then
+      angle = 0
+    else
+      catA = cursor_press.x - cursor_move.x
+      catB = cursor_press.y - cursor_move.y
+      hypo = math.sqrt(catA * catA + catB * catB)
+      angle = math.acos(catB / hypo)
+      if cursor_move.x <= cursor_press.x then
+        dir = 1
+      else
+        dir = -1
+      end
+    end
+  else
+    angle = 0
+    dir = 0
+  end
+  -- local width, height, _ = love.window.getMode()
+  -- if ball_x <= (0 + 5) or ball_x >= (width - 5) then
+  --   velocity_x = velocity_x * -1
+  -- end
+  -- if ball_y <= (0 + 5) then
+  --   velocity_y = velocity_y * -1
+  -- end
+  -- if  ball_y >= (height - 5) then
+  --   active = false
+  --   player_x = ball_x
+  --   ball_y = 400
+  -- end
+  -- if active then
+  --   ball_x = ball_x + velocity_x
+  --   ball_y = ball_y + velocity_y
+  -- end
+end
+
+function love.mousepressed(x, y, button, istouch)
+  pressed(x, y)
+end
+
+function love.touchpressed(id, x, y, dx, dy, pressure)
+  touch_id = id
+  pressed(x, y)
+end
+
+function love.mousereleased(x, y, button, istouch)
+  released()
+end
+
+function love.touchreleased(id, x, y, dx, dy, pressure)
+  released()
+end
+
+function pressed(x, y)
+  if not active then
+    cursor_press = {x = x, y = y}
+    flag = true
+  end
+end
+
+function released()
+  if flag then
+    flag = false
+    active = true
+    remaining_balls = total_balls
+  end
+end