| 1 | #!/usr/bin/env python
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| 2 |
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| 3 | # The basic area editor
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| 4 | #
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| 5 | # To edit an existing level, use
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| 6 | # editor levelname
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| 7 | #
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| 8 | # To create a new level:
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| 9 | #
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| 10 | # editor levelname <xsize> <ysiz>
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| 11 | # (size specified in pixels
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| 12 | #
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| 13 |
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| 14 | import os
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| 15 | import sys
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| 16 |
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| 17 | import pygame
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| 18 | import pygame.locals as pgl
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| 19 |
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| 20 | sys.path.append(os.path.join(os.path.dirname(__file__), '..'))
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| 21 |
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| 22 | import pymunk
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| 23 |
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| 24 | from albow.root import RootWidget
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| 25 | from albow.widget import Widget
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| 26 | from albow.controls import Button
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| 27 | from albow.dialogs import alert
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| 28 |
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| 29 | from nagslang.constants import SCREEN
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| 30 | from nagslang.level import Level, POLY_COLORS
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| 31 |
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| 32 |
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| 33 | # layout constants
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| 34 | MENU_BUTTON_HEIGHT = 35
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| 35 | MENU_PAD = 6
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| 36 | MENU_HALF_PAD = MENU_PAD // 2
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| 37 | MENU_LEFT = SCREEN[0] + MENU_HALF_PAD
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| 38 | MENU_WIDTH = 200 - MENU_PAD
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| 39 |
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| 40 |
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| 41 | class EditorLevel(Level):
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| 42 |
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| 43 | def __init__(self, name, x=800, y=600):
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| 44 | super(EditorLevel, self).__init__(name)
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| 45 | self.x = x
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| 46 | self.y = y
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| 47 |
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| 48 | def round_point(self, pos):
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| 49 | return (10 * (pos[0] // 10), 10 * (pos[1] // 10))
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| 50 |
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| 51 | def point_to_pymunk(self, pos):
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| 52 | # inverse of point_to_pygame
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| 53 | # (this is also the same as point_to_pygame, but a additional
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| 54 | # function for sanity later in pyweek).
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| 55 | return (pos[0], self.y - pos[1])
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| 56 |
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| 57 | def add_point(self, poly_index, pos):
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| 58 | self.polygons.setdefault(poly_index, [])
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| 59 | if not self.polygons[poly_index]:
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| 60 | point = self.point_to_pymunk(self.round_point(pos))
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| 61 | self.polygons[poly_index].append(point)
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| 62 | else:
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| 63 | add_pos = self.fix_angle(poly_index, pos)
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| 64 | self.polygons[poly_index].append(add_pos)
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| 65 |
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| 66 | def fix_angle(self, index, pos):
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| 67 | # Last point
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| 68 | point1 = self.point_to_pygame(self.polygons[index][-1])
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| 69 | pos = self.round_point(pos)
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| 70 | # We want the line (point1 to pos) to be an angle of
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| 71 | # 0, 45, 90, 135, 180, 225, 270, 305
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| 72 | # However, we only need to consider half the circle
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| 73 | # This is a hack to approximate the right thing
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| 74 | pos0 = (pos[0], point1[1])
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| 75 | pos90 = (point1[0], pos[1])
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| 76 | dist = max(abs(point1[0] - pos[0]), abs(point1[1] - pos[1]))
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| 77 | pos45 = (point1[0] + dist, point1[1] + dist)
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| 78 | pos135 = (point1[0] + dist, point1[1] - dist)
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| 79 | pos225 = (point1[0] - dist, point1[1] - dist)
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| 80 | pos305 = (point1[0] - dist, point1[1] + dist)
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| 81 | min_dist = 9999999
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| 82 | new_pos = point1
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| 83 | for cand in [pos0, pos90, pos45, pos135, pos225, pos305]:
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| 84 | dist = (pos[0] - cand[0]) ** 2 + (pos[1] - cand[1]) ** 2
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| 85 | if dist < min_dist:
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| 86 | new_pos = cand
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| 87 | min_dist = dist
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| 88 | return self.point_to_pymunk(new_pos)
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| 89 |
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| 90 | def delete_point(self, index):
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| 91 | if index in self.polygons and len(self.polygons[index]) > 0:
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| 92 | self.polygons[index].pop()
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| 93 |
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| 94 | def close_poly(self, index):
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| 95 | """Attempts to close the current polygon.
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| 96 |
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| 97 | We allow a small additional step to close the polygon, but
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| 98 | it's limited as it's a magic point addition"""
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| 99 | if len(self.polygons[index]) < 2:
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| 100 | # Too small
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| 101 | return False
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| 102 | first = self.polygons[index][0]
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| 103 | if self.fix_angle(index, self.point_to_pygame(first)) == first:
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| 104 | self.add_point(index, self.point_to_pygame(first))
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| 105 | return True
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| 106 | candidates = [(first[0] + 10 * i, first[1]) for
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| 107 | i in (-3, -2, -1, 1, 2, 3)]
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| 108 | candidates.extend([(first[0], first[1] + 10 * i) for
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| 109 | i in (-3, -2, -1, 1, 2, 3)])
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| 110 | candidates.extend([(first[0] + 10 * i, first[1] + 10 * i) for
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| 111 | i in (-3, -2, -1, 1, 2, 3)])
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| 112 | candidates.extend([(first[0] + 10 * i, first[1] - 10 * i) for
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| 113 | i in (-3, -2, -1, 1, 2, 3)])
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| 114 | min_dist = 99999
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| 115 | poss = None
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| 116 | for cand in candidates:
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| 117 | if self.fix_angle(index, self.point_to_pygame(cand)) == cand:
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| 118 | dist = (first[0] - cand[0]) ** 2 + (first[1] - cand[1]) ** 2
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| 119 | if dist < min_dist:
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| 120 | poss = cand
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| 121 | if poss is not None:
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| 122 | self.add_point(index, self.point_to_pygame(poss))
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| 123 | self.add_point(index, self.point_to_pygame(first))
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| 124 | return True
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| 125 | return False
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| 126 |
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| 127 | def draw(self, surface, topleft, mouse_pos, mouse_poly, filled):
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| 128 | self._draw_background(True)
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| 129 | # Draw polygons as needed for the editor
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| 130 | if filled:
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| 131 | self._draw_exterior(True)
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| 132 | for index, polygon in self.polygons.items():
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| 133 | color = POLY_COLORS[index]
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| 134 | if len(polygon) > 1:
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| 135 | pointlist = [self.point_to_pygame(p) for p in polygon]
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| 136 | pygame.draw.lines(self._surface, color, False, pointlist, 2)
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| 137 | if index == mouse_poly and mouse_pos:
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| 138 | endpoint = self.fix_angle(index, mouse_pos)
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| 139 | pygame.draw.line(self._surface, color,
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| 140 | self.point_to_pygame(polygon[-1]),
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| 141 | self.point_to_pygame(endpoint))
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| 142 | surface_area = pygame.rect.Rect(topleft, SCREEN)
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| 143 | surface.blit(self._surface, (0, 0), surface_area)
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| 144 |
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| 145 |
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| 146 | class LevelWidget(Widget):
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| 147 |
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| 148 | def __init__(self, level):
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| 149 | super(LevelWidget, self).__init__(pygame.rect.Rect(0, 0,
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| 150 | SCREEN[0], SCREEN[1]))
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| 151 | self.level = level
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| 152 | self.pos = (0, 0)
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| 153 | self.filled_mode = False
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| 154 | self.mouse_pos = None
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| 155 | self.cur_poly = None
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| 156 | self._mouse_drag = False
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| 157 |
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| 158 | def _level_coordinates(self, pos):
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| 159 | # Move positions to level values
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| 160 | if not pos:
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| 161 | return (0, 0)
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| 162 | return pos[0] + self.pos[0], pos[1] + self.pos[1]
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| 163 |
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| 164 | def _move_view(self, offset):
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| 165 | new_pos = [self.pos[0] + offset[0], self.pos[1] + offset[1]]
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| 166 | if new_pos[0] < 0:
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| 167 | new_pos[0] = self.pos[0]
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| 168 | elif new_pos[0] > self.level.x - SCREEN[0]:
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| 169 | new_pos[0] = self.pos[0]
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| 170 | if new_pos[1] < 0:
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| 171 | new_pos[1] = self.pos[1]
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| 172 | elif new_pos[1] > self.level.y - SCREEN[1]:
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| 173 | new_pos[1] = self.pos[1]
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| 174 | self.pos = tuple(new_pos)
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| 175 |
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| 176 | def draw(self, surface):
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| 177 | if (self.cur_poly is not None and self.cur_poly in self.level.polygons
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| 178 | and len(self.level.polygons[self.cur_poly])):
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| 179 | # We have an active polygon
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| 180 | mouse_pos = self._level_coordinates(self.mouse_pos)
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| 181 | else:
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| 182 | mouse_pos = None
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| 183 | level.draw(surface, self.pos, mouse_pos, self.cur_poly,
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| 184 | self.filled_mode)
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| 185 |
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| 186 | def change_poly(self, new_poly):
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| 187 | self.cur_poly = new_poly
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| 188 | if self.cur_poly is not None:
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| 189 | self.filled_mode = False
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| 190 |
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| 191 | def key_down(self, ev):
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| 192 | if ev.key == pgl.K_LEFT:
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| 193 | self._move_view((-10, 0))
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| 194 | elif ev.key == pgl.K_RIGHT:
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| 195 | self._move_view((10, 0))
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| 196 | elif ev.key == pgl.K_UP:
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| 197 | self._move_view((0, -10))
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| 198 | elif ev.key == pgl.K_DOWN:
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| 199 | self._move_view((0, 10))
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| 200 | elif ev.key in (pgl.K_1, pgl.K_2, pgl.K_3, pgl.K_4, pgl.K_5, pgl.K_6):
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| 201 | self.change_poly(ev.key - pgl.K_0)
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| 202 | elif ev.key == pgl.K_0:
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| 203 | self.change_poly(None)
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| 204 | elif ev.key == pgl.K_d and self.cur_poly:
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| 205 | self.level.delete_point(self.cur_poly)
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| 206 | elif ev.key == pgl.K_f:
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| 207 | self.set_filled()
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| 208 | elif ev.key == pgl.K_c:
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| 209 | self.close_poly()
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| 210 |
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| 211 | def set_filled(self):
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| 212 | closed, _ = self.level.all_closed()
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| 213 | if closed:
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| 214 | self.cur_poly = None
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| 215 | self.filled_mode = True
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| 216 | else:
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| 217 | alert('Not all polygons closed, so not filling')
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| 218 |
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| 219 | def mouse_move(self, ev):
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| 220 | old_pos = self.mouse_pos
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| 221 | self.mouse_pos = ev.pos
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| 222 | if self.cur_poly and old_pos != self.mouse_pos:
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| 223 | self.invalidate()
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| 224 |
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| 225 | def mouse_drag(self, ev):
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| 226 | if self._mouse_drag:
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| 227 | old_pos = self.mouse_pos
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| 228 | self.mouse_pos = ev.pos
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| 229 | diff = (-self.mouse_pos[0] + old_pos[0],
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| 230 | -self.mouse_pos[1] + old_pos[1])
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| 231 | self._move_view(diff)
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| 232 | self.invalidate()
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| 233 |
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| 234 | def mouse_down(self, ev):
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| 235 | if ev.button == 1:
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| 236 | print "Click: %r" % (self._level_coordinates(ev.pos),)
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| 237 | if ev.button == 4: # Scroll up
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| 238 | self._move_view((0, -10))
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| 239 | elif ev.button == 5: # Scroll down
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| 240 | self._move_view((0, 10))
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| 241 | elif ev.button == 6: # Scroll left
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| 242 | self._move_view((-10, 0))
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| 243 | elif ev.button == 7: # Scroll right
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| 244 | self._move_view((10, 0))
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| 245 | elif self.cur_poly and ev.button == 1:
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| 246 | # Add a point
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| 247 | self.level.add_point(self.cur_poly,
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| 248 | self._level_coordinates(ev.pos))
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| 249 | elif ev.button == 3:
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| 250 | self._mouse_drag = True
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| 251 |
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| 252 | def mouse_up(self, ev):
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| 253 | if ev.button == 3:
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| 254 | self._mouse_drag = False
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| 255 |
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| 256 | def close_poly(self):
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| 257 | if self.cur_poly is None:
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| 258 | return
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| 259 | if self.level.close_poly(self.cur_poly):
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| 260 | alert("Successfully closed the polygon")
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| 261 | self.change_poly(None)
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| 262 | else:
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| 263 | alert("Failed to close the polygon")
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| 264 |
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| 265 |
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| 266 | class PolyButton(Button):
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| 267 | """Button for coosing the correct polygon"""
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| 268 |
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| 269 | def __init__(self, index, level_widget):
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| 270 | if index is not None:
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| 271 | text = "Draw: %s" % index
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| 272 | else:
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| 273 | text = 'Exit Draw Mode'
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| 274 | super(PolyButton, self).__init__(text)
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| 275 | self.index = index
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| 276 | self.level_widget = level_widget
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| 277 |
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| 278 | def action(self):
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| 279 | self.level_widget.change_poly(self.index)
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| 280 |
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| 281 |
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| 282 | class EditorApp(RootWidget):
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| 283 |
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| 284 | def __init__(self, level, surface):
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| 285 | super(EditorApp, self).__init__(surface)
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| 286 | self.level = level
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| 287 | self.level_widget = LevelWidget(self.level)
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| 288 | self.add(self.level_widget)
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| 289 |
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| 290 | # Add poly buttons
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| 291 | y = 15
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| 292 | for poly in range(1, 7):
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| 293 | but = PolyButton(poly, self.level_widget)
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| 294 | but.rect = pygame.rect.Rect(0, 0, MENU_WIDTH // 2 - MENU_PAD,
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| 295 | MENU_BUTTON_HEIGHT)
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| 296 | if poly % 2:
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| 297 | but.rect.move_ip(MENU_LEFT, y)
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| 298 | else:
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| 299 | but.rect.move_ip(MENU_LEFT + MENU_WIDTH // 2 - MENU_HALF_PAD,
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| 300 | y)
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| 301 | y += MENU_BUTTON_HEIGHT + MENU_PAD
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| 302 | self.add(but)
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| 303 |
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| 304 | button_rect = pygame.rect.Rect(0, 0, MENU_WIDTH, MENU_BUTTON_HEIGHT)
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| 305 |
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| 306 | end_poly_but = PolyButton(None, self.level_widget)
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| 307 | end_poly_but.rect = button_rect.copy()
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| 308 | end_poly_but.rect.move_ip(MENU_LEFT, y)
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| 309 | self.add(end_poly_but)
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| 310 | y += MENU_BUTTON_HEIGHT + MENU_PAD
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| 311 |
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| 312 | fill_but = Button('Fill exterior', action=self.level_widget.set_filled)
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| 313 | fill_but.rect = button_rect.copy()
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| 314 | fill_but.rect.move_ip(MENU_LEFT, y)
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| 315 | self.add(fill_but)
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| 316 | y += MENU_BUTTON_HEIGHT + MENU_PAD
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| 317 |
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| 318 | save_but = Button('Save Level', action=self.save)
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| 319 | save_but.rect = button_rect.copy()
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| 320 | save_but.rect.move_ip(MENU_LEFT, y)
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| 321 | self.add(save_but)
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| 322 | y += MENU_BUTTON_HEIGHT + MENU_PAD
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| 323 |
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| 324 | close_poly_but = Button('Close Polygon',
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| 325 | action=self.level_widget.close_poly)
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| 326 | close_poly_but.rect = button_rect.copy()
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| 327 | close_poly_but.rect.move_ip(MENU_LEFT, y)
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| 328 | self.add(close_poly_but)
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| 329 | y += MENU_BUTTON_HEIGHT + MENU_PAD
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| 330 |
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| 331 | quit_but = Button('Quit', action=self.quit)
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| 332 | quit_but.rect = button_rect.copy()
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| 333 | quit_but.rect.move_ip(MENU_LEFT, y)
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| 334 | self.add(quit_but)
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| 335 |
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| 336 | def key_down(self, ev):
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| 337 | if ev.key == pgl.K_ESCAPE:
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| 338 | self.quit()
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| 339 | elif ev.key == pgl.K_s:
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| 340 | self.save()
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| 341 | else:
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| 342 | self.level_widget.key_down(ev)
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| 343 |
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| 344 | def save(self):
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| 345 | closed, messages = self.level.all_closed()
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| 346 | if closed:
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| 347 | self.level.save()
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| 348 | # display success
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| 349 | alert("Level %s saved successfully." % self.level.name)
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| 350 | else:
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| 351 | # display errors
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| 352 | alert("Failed to save level.\n\n%s" % '\n'.join(messages))
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| 353 |
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| 354 | def mouse_move(self, ev):
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| 355 | self.level_widget.mouse_move(ev)
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| 356 |
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| 357 |
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| 358 | if __name__ == "__main__":
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| 359 | if len(sys.argv) == 2:
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| 360 | level = EditorLevel(sys.argv[1])
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| 361 | level.load(pymunk.Space())
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| 362 | elif len(sys.argv) == 4:
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| 363 | level = EditorLevel(sys.argv[1], int(sys.argv[2]), int(sys.argv[3]))
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| 364 | else:
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| 365 | print 'Please supply a levelname or levelname and level size'
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| 366 | sys.exit()
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| 367 | pygame.display.init()
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| 368 | pygame.font.init()
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| 369 | pygame.display.set_mode((SCREEN[0] + MENU_WIDTH, SCREEN[1]),
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| 370 | pgl.SWSURFACE)
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| 371 | pygame.display.set_caption('Nagslang Area Editor')
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| 372 | pygame.key.set_repeat(200, 100)
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| 373 | app = EditorApp(level, pygame.display.get_surface())
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| 374 | app.run()
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![(please configure the [header_logo] section in trac.ini)](/trac/nagslang/chrome/common/trac_banner.png)
