def _draw_pulse(cls, canvas: tk.Canvas, tower_: SimpleTower):
"""Draws a pulse tower"""
x, y = tower_.position
x_diameter, y_diameter = tower_.grid_size
top_left, bottom_right = tower_.get_bounding_box()
cell_size = tower_.cell_size
colour = tower_.colour
body = canvas.create_oval(top_left,
bottom_right,
tag='tower',
fill=colour)
tags = [body]
angle_step = math.pi / 2
for i in range(4):
angle = i * angle_step
dx = (x_diameter / 2) * cell_size * math.cos(angle)
dy = (y_diameter / 2) * cell_size * math.sin(angle)
tag = canvas.create_line(x + dx / 2,
y + dy / 2,
x + dx,
y + dy,
tag='tower')
tags.append(tag)
return tags
def _draw_simple(cls, canvas: tk.Canvas, tower_: SimpleTower):
"""Draws a simple tower"""
x, y = tower_.position
angle = tower_.rotation
x_diameter, y_diameter = tower_.grid_size
top_left, bottom_right = tower_.get_bounding_box()
cell_size = tower_.cell_size
colour = tower_.colour
return [
canvas.create_oval(top_left,
bottom_right,
tag='tower',
fill=colour),
canvas.create_line(
x,
y,
x + (x_diameter / 2) * cell_size * math.cos(angle),
y + (y_diameter / 2) * cell_size * math.sin(angle),
tag='tower')
]
def _left_click(self, event):
"""
Place tower when a grid is left clicked
Parameter:
event (tk.Event): Tkinter mouse event
"""
if self._lives != 0 and self._won == False:
if self._coins >= int(self._current_tower.__class__.base_cost):
self._coins -= int(self._current_tower.__class__.base_cost)
self._set_gold(self._coins)
self._view.delete("shadow")
# retrieve position to place tower
position = event.x, event.y
cell_position = self._game.grid.pixel_to_cell(position)
if self._game.place(cell_position, tower_type=self._current_tower.__class__):
# Task 1.2 (Tower Placement): Attempt to place the tower being previewed
pass
elif not self._game.place(cell_position, tower_type=SimpleTower(self._game.grid.cell_size).__class__):
# If a tower cannot be placed in that position, then a tower exists so call method upgrade_tower.
self.upgrade_tower(event)
self.refresh_view()