Mercurial > nagslang

annotate nagslang/screens/area.py @ 333:3dd32686dbc3

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Better wolf claw attack.
author Jeremy Thurgood <firxen@gmail.com>
date Fri, 06 Sep 2013 10:49:19 +0200
parents 0d7885e2f063
children 1d487646a4d4
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1 """Display a game area."""
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2
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3 import pygame
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4 import pymunk
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5 import pymunk.pygame_util
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6
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7 from nagslang.constants import (
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8 COLLISION_TYPE_WALL, COLLISION_TYPE_PLAYER, CALLBACK_COLLIDERS,
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9 COLLISION_TYPE_FURNITURE, COLLISION_TYPE_WEREWOLF_ATTACK)
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10 from nagslang.enemies import DeadEnemy
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11 from nagslang.events import (
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12 ScreenChange, DoorEvent, FireEvent, EnemyDeathEvent, ClawEvent)
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13 from nagslang.level import Level
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14 from nagslang.screens.base import Screen
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15 from nagslang.game_object import Bullet, ClawAttack
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16 from nagslang.sound import sound
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17
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18
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19 class ControlKeys(object):
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20 direction_keys = {
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21 (0, 1): set([pygame.locals.K_UP, pygame.locals.K_w]),
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22 (0, -1): set([pygame.locals.K_DOWN, pygame.locals.K_s]),
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23 (-1, 0): set([pygame.locals.K_LEFT, pygame.locals.K_a]),
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24 (1, 0): set([pygame.locals.K_RIGHT, pygame.locals.K_d]),
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25 }
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26
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27 def __init__(self):
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28 self.keys_down = set()
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29
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30 def key_down(self, key):
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31 self.keys_down.add(key)
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32
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33 def key_up(self, key):
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34 self.keys_down.discard(key)
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35
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36 def handle_event(self, ev):
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37 if ev.type == pygame.locals.KEYDOWN:
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38 self.key_down(ev.key)
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39 elif ev.type == pygame.locals.KEYUP:
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40 self.key_up(ev.key)
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41
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42 def get_direction(self):
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43 dx, dy = 0, 0
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44 for (tx, ty), keys in self.direction_keys.iteritems():
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45 if self.keys_down & keys:
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46 dx += tx
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47 dy += ty
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48 return (dx, dy)
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51 class Drawables(object):
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52 def __init__(self):
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53 self._drawables = {}
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54
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55 def add(self, drawable):
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56 self._drawables.setdefault(drawable.zorder, []).append(drawable)
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57
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58 def remove(self, drawable):
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59 self._drawables[drawable.zorder].remove(drawable)
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60
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61 def get_drawables(self):
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62 for zorder in sorted(self._drawables):
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63 for drawable in self._drawables[zorder]:
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64 yield drawable
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65
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66 __iter__ = get_drawables
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67
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68
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69 class AreaScreen(Screen):
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70
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71 def setup(self):
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72 self._disable_render = False # Avoid redrawing on scene changes
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73 self.keys = ControlKeys()
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74 self._level = Level(self.name, self.world)
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75 self._level.load(self.space)
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76 self._drawables = Drawables()
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77 self.add_walls()
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78 self._add_collision_handlers()
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79 self.add_protagonist()
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80 self.add_game_objects()
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81 sound.play_music("POL-cyber-factory-short.ogg")
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82
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83 def teardown(self):
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84 sound.stop()
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85
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86 @classmethod
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87 def list_areas(self):
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88 return Level.list_levels()
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89
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90 def _player_collision_pre_solve_handler(self, space, arbiter):
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91 gobj = arbiter.shapes[1].physicser.game_object
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92 result = gobj.collide_with_protagonist(self.protagonist)
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93 # The collision handler must return `True` or `False`. We don't want to
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94 # accidentally reject collisions from handlers that return `None`, so
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95 # we explicitly check for `False` and treate everything else as `True`.
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96 return result is not False
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97
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98 def _claw_attack_collision_pre_solve_handler(self, space, arbiter):
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99 claw = arbiter.shapes[0].physicser.game_object
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100 gobj = arbiter.shapes[1].physicser.game_object
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101 result = gobj.collide_with_claw_attack(claw)
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102 return result is not False
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103
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104 def _furniture_collision_pre_solve_handler(self, space, arbiter):
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105 furniture = arbiter.shapes[0].physicser.game_object
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106 gobj = arbiter.shapes[1].physicser.game_object
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107 result = gobj.collide_with_furniture(furniture)
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108 return result is not False
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109
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110 def _add_collision_handlers(self):
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111 for collision_type in CALLBACK_COLLIDERS:
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112 self.space.add_collision_handler(
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113 COLLISION_TYPE_PLAYER, collision_type,
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114 pre_solve=self._player_collision_pre_solve_handler)
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115 self.space.add_collision_handler(
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116 COLLISION_TYPE_FURNITURE, collision_type,
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117 pre_solve=self._furniture_collision_pre_solve_handler)
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118 self.space.add_collision_handler(
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119 COLLISION_TYPE_WEREWOLF_ATTACK, collision_type,
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120 pre_solve=self._claw_attack_collision_pre_solve_handler)
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121
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122 def add_walls(self):
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123 self.walls = []
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124 body = pymunk.Body()
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125 body.position = (0, 0)
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126 walls = self._level.get_walls()
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127 for wall in walls:
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128 if len(wall) < 2:
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129 # Don't try to add a useless wall
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130 continue
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131 corners = wall
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132 corner = corners[-1]
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133 for next_corner in corners:
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134 wall = pymunk.Segment(body, corner, next_corner, 5)
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135 wall.collision_type = COLLISION_TYPE_WALL
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136 wall.elasticity = 1.0
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137 self.walls.append(wall)
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138 corner = next_corner
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139 self.space.add(*self.walls)
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140
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141 def add_game_objects(self):
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142 for drawable in self._level.drawables:
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143 self._drawables.add(drawable)
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144
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145 def add_protagonist(self):
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146 self.protagonist = self.world.protagonist
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diff changeset
147 self.protagonist.change_space(self.space)
107
b90d01e4d9d4 Layered drawing.
Jeremy Thurgood <firxen@gmail.com>
parents: 106
diff changeset
148 self._drawables.add(self.protagonist)
21
1b048d2a8411 Fake area.
Simon Cross <hodgestar@gmail.com>
parents: 20
diff changeset
149
18
9ecb1d222ee0 Screens.
Simon Cross <hodgestar@gmail.com>
parents:
diff changeset
150 def handle_event(self, ev):
20
347667c941de Hook up area.
Simon Cross <hodgestar@gmail.com>
parents: 18
diff changeset
151 if ev.type == pygame.locals.KEYDOWN:
347667c941de Hook up area.
Simon Cross <hodgestar@gmail.com>
parents: 18
diff changeset
152 if ev.key == pygame.locals.K_ESCAPE:
347667c941de Hook up area.
Simon Cross <hodgestar@gmail.com>
parents: 18
diff changeset
153 ScreenChange.post('menu')
97
c177cdc41477 Add WASD controls, switch to "c" for form change.
Jeremy Thurgood <firxen@gmail.com>
parents: 93
diff changeset
154 if ev.key == pygame.locals.K_c:
47
82036437ebf6 Better movement and swap between werewolf and human form with 'w' (hodgestar, decoy).
Simon Cross <hodgestar@gmail.com>
parents: 37
diff changeset
155 self.protagonist.toggle_form()
238
28d906fc2ab1 Add a world object to collect some stats
Neil Muller <drnlmuller@gmail.com>
parents: 211
diff changeset
156 self.world.transformations += 1
283
1dd05d03ad21 Fire on Ctrl too (z isn't convenient on Dvorak)
Stefano Rivera <stefano@rivera.za.net>
parents: 281
diff changeset
157 if ev.key in (pygame.locals.K_z, pygame.locals.K_LCTRL):
261
db7c8e74efb4 (really rubbish) bullets
Stefano Rivera <stefano@rivera.za.net>
parents: 258
diff changeset
158 self.world.attacks += 1
db7c8e74efb4 (really rubbish) bullets
Stefano Rivera <stefano@rivera.za.net>
parents: 258
diff changeset
159 self.protagonist.attack()
281
9b56e954c674 Protagonist actions, now required for operating doors.
Jeremy Thurgood <firxen@gmail.com>
parents: 279
diff changeset
160 if ev.key == pygame.locals.K_SPACE:
9b56e954c674 Protagonist actions, now required for operating doors.
Jeremy Thurgood <firxen@gmail.com>
parents: 279
diff changeset
161 self.protagonist.perform_action()
180
026297a03963 Add DoorEvent and tweak ScreenChange to keep more state when the player goes through a door
Neil Muller <drnlmuller@gmail.com>
parents: 147
diff changeset
162 elif DoorEvent.matches(ev):
026297a03963 Add DoorEvent and tweak ScreenChange to keep more state when the player goes through a door
Neil Muller <drnlmuller@gmail.com>
parents: 147
diff changeset
163 self.protagonist.set_position(ev.dest_pos)
026297a03963 Add DoorEvent and tweak ScreenChange to keep more state when the player goes through a door
Neil Muller <drnlmuller@gmail.com>
parents: 147
diff changeset
164 if ev.destination != self.name:
026297a03963 Add DoorEvent and tweak ScreenChange to keep more state when the player goes through a door
Neil Muller <drnlmuller@gmail.com>
parents: 147
diff changeset
165 # Go to anther screen
190
97627a999042 Don't render the old scene with the protagnist's new position during scene changes
Neil Muller <drnlmuller@gmail.com>
parents: 188
diff changeset
166 self._disable_render = True
238
28d906fc2ab1 Add a world object to collect some stats
Neil Muller <drnlmuller@gmail.com>
parents: 211
diff changeset
167 self.world.rooms += 1
276
3153196517fc Move protagonist to the world
Neil Muller <drnlmuller@gmail.com>
parents: 272
diff changeset
168 ScreenChange.post(ev.destination)
190
97627a999042 Don't render the old scene with the protagnist's new position during scene changes
Neil Muller <drnlmuller@gmail.com>
parents: 188
diff changeset
169 return
180
026297a03963 Add DoorEvent and tweak ScreenChange to keep more state when the player goes through a door
Neil Muller <drnlmuller@gmail.com>
parents: 147
diff changeset
170 # else we're teleporting within the screen, and just the
026297a03963 Add DoorEvent and tweak ScreenChange to keep more state when the player goes through a door
Neil Muller <drnlmuller@gmail.com>
parents: 147
diff changeset
171 # position change is enough
261
db7c8e74efb4 (really rubbish) bullets
Stefano Rivera <stefano@rivera.za.net>
parents: 258
diff changeset
172 elif FireEvent.matches(ev):
305
ce11e1cae0ed Enemies now die
Stefano Rivera <stefano@rivera.za.net>
parents: 303
diff changeset
173 bullet = Bullet(self.space, ev.source, ev.impulse, ev.damage,
293
47226c661ae2 Bullets that mostly die when they hit things
Stefano Rivera <stefano@rivera.za.net>
parents: 283
diff changeset
174 ev.source_collision_type)
261
db7c8e74efb4 (really rubbish) bullets
Stefano Rivera <stefano@rivera.za.net>
parents: 258
diff changeset
175 self._drawables.add(bullet)
308
3dee86b6c216 Enemies leave corpses
Stefano Rivera <stefano@rivera.za.net>
parents: 307
diff changeset
176 elif EnemyDeathEvent.matches(ev):
3dee86b6c216 Enemies leave corpses
Stefano Rivera <stefano@rivera.za.net>
parents: 307
diff changeset
177 self.world.kills += 1
3dee86b6c216 Enemies leave corpses
Stefano Rivera <stefano@rivera.za.net>
parents: 307
diff changeset
178 dead_enemy = DeadEnemy(self.space, self.world, ev.position,
3dee86b6c216 Enemies leave corpses
Stefano Rivera <stefano@rivera.za.net>
parents: 307
diff changeset
179 ev.enemy_type)
3dee86b6c216 Enemies leave corpses
Stefano Rivera <stefano@rivera.za.net>
parents: 307
diff changeset
180 self._drawables.add(dead_enemy)
312
72aca01c87ed Basic claw attack, stealing liberally from other people's code! ;)
David Sharpe
parents: 308
diff changeset
181 elif ClawEvent.matches(ev):
72aca01c87ed Basic claw attack, stealing liberally from other people's code! ;)
David Sharpe
parents: 308
diff changeset
182 claw_attack = ClawAttack(self.space, ev.source, ev.vector,
333
3dd32686dbc3 Better wolf claw attack.
Jeremy Thurgood <firxen@gmail.com>
parents: 321
diff changeset
183 ev.damage)
312
72aca01c87ed Basic claw attack, stealing liberally from other people's code! ;)
David Sharpe
parents: 308
diff changeset
184 self._drawables.add(claw_attack)
34
2995723e8ccf Move and hold.
Simon Cross <hodgestar@gmail.com>
parents: 27
diff changeset
185 self.keys.handle_event(ev)
18
9ecb1d222ee0 Screens.
Simon Cross <hodgestar@gmail.com>
parents:
diff changeset
186
87
75d8ad4bf9b5 Hack in viewport
Neil Muller <drnlmuller@gmail.com>
parents: 86
diff changeset
187 def _calc_viewport(self, level_surface, display_surface):
75d8ad4bf9b5 Hack in viewport
Neil Muller <drnlmuller@gmail.com>
parents: 86
diff changeset
188 level_size = level_surface.get_size()
75d8ad4bf9b5 Hack in viewport
Neil Muller <drnlmuller@gmail.com>
parents: 86
diff changeset
189 display_size = display_surface.get_size()
93
d6a49f0c1e6e Rectangular human protagonist shape, refactored physicsers.
Jeremy Thurgood <firxen@gmail.com>
parents: 92
diff changeset
190 protagnist_pos = self.protagonist.physicser.get_render_position(
127
fe1f0bb4ecf0 Handle case of display larger than the level better
Neil Muller <drnlmuller@gmail.com>
parents: 107
diff changeset
191 level_surface)
87
75d8ad4bf9b5 Hack in viewport
Neil Muller <drnlmuller@gmail.com>
parents: 86
diff changeset
192 x_wide = display_size[0] // 2
75d8ad4bf9b5 Hack in viewport
Neil Muller <drnlmuller@gmail.com>
parents: 86
diff changeset
193 y_wide = display_size[1] // 2
127
fe1f0bb4ecf0 Handle case of display larger than the level better
Neil Muller <drnlmuller@gmail.com>
parents: 107
diff changeset
194 if display_size[0] > level_size[0]:
fe1f0bb4ecf0 Handle case of display larger than the level better
Neil Muller <drnlmuller@gmail.com>
parents: 107
diff changeset
195 x = -(display_size[0] - level_size[0]) // 2
fe1f0bb4ecf0 Handle case of display larger than the level better
Neil Muller <drnlmuller@gmail.com>
parents: 107
diff changeset
196 elif protagnist_pos[0] < x_wide:
87
75d8ad4bf9b5 Hack in viewport
Neil Muller <drnlmuller@gmail.com>
parents: 86
diff changeset
197 x = 0
75d8ad4bf9b5 Hack in viewport
Neil Muller <drnlmuller@gmail.com>
parents: 86
diff changeset
198 elif protagnist_pos[0] > level_size[0] - x_wide:
75d8ad4bf9b5 Hack in viewport
Neil Muller <drnlmuller@gmail.com>
parents: 86
diff changeset
199 x = level_size[0] - display_size[0]
75d8ad4bf9b5 Hack in viewport
Neil Muller <drnlmuller@gmail.com>
parents: 86
diff changeset
200 else:
75d8ad4bf9b5 Hack in viewport
Neil Muller <drnlmuller@gmail.com>
parents: 86
diff changeset
201 x = protagnist_pos[0] - x_wide
127
fe1f0bb4ecf0 Handle case of display larger than the level better
Neil Muller <drnlmuller@gmail.com>
parents: 107
diff changeset
202 if display_size[1] > level_size[1]:
fe1f0bb4ecf0 Handle case of display larger than the level better
Neil Muller <drnlmuller@gmail.com>
parents: 107
diff changeset
203 y = -(display_size[1] - level_size[1]) // 2
fe1f0bb4ecf0 Handle case of display larger than the level better
Neil Muller <drnlmuller@gmail.com>
parents: 107
diff changeset
204 elif protagnist_pos[1] < y_wide:
87
75d8ad4bf9b5 Hack in viewport
Neil Muller <drnlmuller@gmail.com>
parents: 86
diff changeset
205 y = 0
75d8ad4bf9b5 Hack in viewport
Neil Muller <drnlmuller@gmail.com>
parents: 86
diff changeset
206 elif protagnist_pos[1] > level_size[1] - y_wide:
75d8ad4bf9b5 Hack in viewport
Neil Muller <drnlmuller@gmail.com>
parents: 86
diff changeset
207 y = level_size[1] - display_size[1]
75d8ad4bf9b5 Hack in viewport
Neil Muller <drnlmuller@gmail.com>
parents: 86
diff changeset
208 else:
75d8ad4bf9b5 Hack in viewport
Neil Muller <drnlmuller@gmail.com>
parents: 86
diff changeset
209 y = protagnist_pos[1] - y_wide
75d8ad4bf9b5 Hack in viewport
Neil Muller <drnlmuller@gmail.com>
parents: 86
diff changeset
210 return pygame.rect.Rect(x, y, display_size[0], display_size[1])
75d8ad4bf9b5 Hack in viewport
Neil Muller <drnlmuller@gmail.com>
parents: 86
diff changeset
211
18
9ecb1d222ee0 Screens.
Simon Cross <hodgestar@gmail.com>
parents:
diff changeset
212 def render(self, surface):
190
97627a999042 Don't render the old scene with the protagnist's new position during scene changes
Neil Muller <drnlmuller@gmail.com>
parents: 188
diff changeset
213 if self._disable_render:
97627a999042 Don't render the old scene with the protagnist's new position during scene changes
Neil Muller <drnlmuller@gmail.com>
parents: 188
diff changeset
214 return
50
94d47bfcc7bb Approximate levels and walls
Neil Muller <drnlmuller@gmail.com>
parents: 47
diff changeset
215 background = self._level.get_background()
84
ef8e799477e0 Point pymunk at a screen surface, not the display to make things saner
Neil Muller <drnlmuller@gmail.com>
parents: 83
diff changeset
216 mysurface = background.copy()
105
0131e4606e1a List of drawables in area.
Jeremy Thurgood <firxen@gmail.com>
parents: 100
diff changeset
217 for drawable in self._drawables:
0131e4606e1a List of drawables in area.
Jeremy Thurgood <firxen@gmail.com>
parents: 100
diff changeset
218 drawable.render(mysurface)
87
75d8ad4bf9b5 Hack in viewport
Neil Muller <drnlmuller@gmail.com>
parents: 86
diff changeset
219 render_rect = self._calc_viewport(mysurface, surface)
75d8ad4bf9b5 Hack in viewport
Neil Muller <drnlmuller@gmail.com>
parents: 86
diff changeset
220 surface.blit(mysurface, (0, 0), render_rect)
191
e080fcd07fa9 Overlay notes
Stefano Rivera <stefano@rivera.za.net>
parents: 190
diff changeset
221 for overlay in self._level.overlay_drawables:
e080fcd07fa9 Overlay notes
Stefano Rivera <stefano@rivera.za.net>
parents: 190
diff changeset
222 if overlay.is_visible():
211
434b5a3aaaff Pass display offset to overlays for when the display is larger than the level
Neil Muller <drnlmuller@gmail.com>
parents: 192
diff changeset
223 overlay.render(surface, render_rect.topleft)
243
46707efbb3a5 Added health bar to main screen.
David Sharpe
parents: 211
diff changeset
224 self.render_health_bar(surface)
34
2995723e8ccf Move and hold.
Simon Cross <hodgestar@gmail.com>
parents: 27
diff changeset
225
2995723e8ccf Move and hold.
Simon Cross <hodgestar@gmail.com>
parents: 27
diff changeset
226 def tick_protagonist(self):
100
96bdfadeb461 Cleaner direction key management.
Jeremy Thurgood <firxen@gmail.com>
parents: 97
diff changeset
227 dx, dy = self.keys.get_direction()
47
82036437ebf6 Better movement and swap between werewolf and human form with 'w' (hodgestar, decoy).
Simon Cross <hodgestar@gmail.com>
parents: 37
diff changeset
228 self.protagonist.set_direction(dx, dy)
34
2995723e8ccf Move and hold.
Simon Cross <hodgestar@gmail.com>
parents: 27
diff changeset
229
2995723e8ccf Move and hold.
Simon Cross <hodgestar@gmail.com>
parents: 27
diff changeset
230 def tick(self, seconds):
303
24bd56bd17bd Fix timing issues
Neil Muller <drnlmuller@gmail.com>
parents: 301
diff changeset
231 super(AreaScreen, self).tick(seconds)
34
2995723e8ccf Move and hold.
Simon Cross <hodgestar@gmail.com>
parents: 27
diff changeset
232 self.tick_protagonist()
143
deac6a4008e7 Hook up protagnist animations
Neil Muller <drnlmuller@gmail.com>
parents: 140
diff changeset
233 for drawable in self._drawables:
307
c2bbb1e70d6f Rename animate to update and pass seconds, for future fun
Neil Muller <drnlmuller@gmail.com>
parents: 305
diff changeset
234 drawable.update(seconds)
293
47226c661ae2 Bullets that mostly die when they hit things
Stefano Rivera <stefano@rivera.za.net>
parents: 283
diff changeset
235 if drawable.remove:
47226c661ae2 Bullets that mostly die when they hit things
Stefano Rivera <stefano@rivera.za.net>
parents: 283
diff changeset
236 self._drawables.remove(drawable)
243
46707efbb3a5 Added health bar to main screen.
David Sharpe
parents: 211
diff changeset
237
258
083053422a84 Added collision damage with enemies.
David Sharpe
parents: 257
diff changeset
238 def render_health_bar(self, surface, damage_experienced=None):
243
46707efbb3a5 Added health bar to main screen.
David Sharpe
parents: 211
diff changeset
239 rect = pygame.Rect(50, 500, 110, 50)
258
083053422a84 Added collision damage with enemies.
David Sharpe
parents: 257
diff changeset
240 if damage_experienced:
083053422a84 Added collision damage with enemies.
David Sharpe
parents: 257
diff changeset
241 health_box_colour = pygame.color.THECOLORS['red']
083053422a84 Added collision damage with enemies.
David Sharpe
parents: 257
diff changeset
242 else:
083053422a84 Added collision damage with enemies.
David Sharpe
parents: 257
diff changeset
243 health_box_colour = pygame.color.THECOLORS['white']
333
3dd32686dbc3 Better wolf claw attack.
Jeremy Thurgood <firxen@gmail.com>
parents: 321
diff changeset
244 pygame.draw.rect(surface, health_box_colour, rect, 0)
246
281c54cefe08 Added health to protagonist.
David Sharpe
parents: 244
diff changeset
245 if self.protagonist.in_human_form():
243
46707efbb3a5 Added health bar to main screen.
David Sharpe
parents: 211
diff changeset
246 health_colour = pygame.color.THECOLORS['red']
46707efbb3a5 Added health bar to main screen.
David Sharpe
parents: 211
diff changeset
247 else:
46707efbb3a5 Added health bar to main screen.
David Sharpe
parents: 211
diff changeset
248 health_colour = pygame.color.THECOLORS['purple']
246
281c54cefe08 Added health to protagonist.
David Sharpe
parents: 244
diff changeset
249 rect = pygame.Rect(55, 505, self.protagonist.get_health_level(), 40)
333
3dd32686dbc3 Better wolf claw attack.
Jeremy Thurgood <firxen@gmail.com>
parents: 321
diff changeset
250 pygame.draw.rect(surface, health_colour, rect, 0)