From 1603242321c66c39d2f909998fd96d4b40560c04 Mon Sep 17 00:00:00 2001
From: Tyler Scott <tyler@dvkmo.com>
Date: Thu, 3 Feb 2022 14:00:10 +0700
Subject: [PATCH] Launch bubble on mouse press

---
 main.lua | 42 +++++++++++++++++++++++++++++++++---------
 1 file changed, 33 insertions(+), 9 deletions(-)

diff --git a/main.lua b/main.lua
index be8835b..fc1792e 100644
--- a/main.lua
+++ b/main.lua
@@ -33,6 +33,7 @@ function love.load(arg)
 
   game.bubble_diameter = 60
   game.bubble_radius = game.bubble_diameter / 2
+  game.bubble_speed = 900 -- px/s
 
   -- vertical distance between bubble center points
   game.row_gap = math.ceil(math.sqrt(
@@ -108,7 +109,20 @@ function love.load(arg)
     game.bubble_type_counts[bubble_type] = game.bubble_type_counts[bubble_type] + 1
   end
   game.next_bubble_index = 1
-  game.next_bubble_type = get_next_bubble_type(game.next_bubble_index, bubble_types)
+  game.next_bubble = {
+    x = game.launcher_x,
+    y = game.launcher_y,
+    bubble_type = get_next_bubble_type(game.next_bubble_index, bubble_types),
+    velocity_x = 0,
+    velocity_y = 0
+  }
+end
+
+function love.update(dt)
+  if game.next_bubble.velocity_x ~= 0 or game.next_bubble.velocity_y ~= 0 then
+    game.next_bubble.x = game.next_bubble.x + game.next_bubble.velocity_x * dt
+    game.next_bubble.y = game.next_bubble.y + game.next_bubble.velocity_y * dt
+  end
 end
 
 function love.draw()
@@ -167,17 +181,27 @@ function love.draw()
   -- draw next bubble
   love.graphics.setColor(1, 1, 1, 1)
   love.graphics.draw(
-    game.bubble_images[game.next_bubble_type], -- image
-    game.launcher_x,                           -- x
-    game.launcher_y,                           -- y
-    0,                                         -- rotation
-    1,                                         -- x scale
-    1,                                         -- y scale
-    game.bubble_radius,                        -- x offset
-    game.bubble_radius                         -- y offset
+    game.bubble_images[game.next_bubble.bubble_type],
+    game.next_bubble.x,
+    game.next_bubble.y,
+    0,
+    1,
+    1,
+    game.bubble_radius,
+    game.bubble_radius
   )
 end
 
+function love.mousepressed(x, y, button, is_touch, presses)
+  if button == 1 then
+    local diff_x = x - game.launcher_x
+    local diff_y = y - game.launcher_y
+    local dist = math.sqrt(diff_x * diff_x + diff_y * diff_y)
+    game.next_bubble.velocity_x = diff_x / dist * game.bubble_speed
+    game.next_bubble.velocity_y = diff_y / dist * game.bubble_speed
+  end
+end
+
 function love.mousemoved(x, y, dx, dy, is_touch)
   local diff_x = x - game.launcher_x
   local diff_y = y - game.launcher_y