Mercurial > touhou
annotate stageviewer.py @ 11:548662d70860
Add some explanations to the magic constants
| author | Thibaut Girka <thib@sitedethib.com> |
|---|---|
| date | Wed, 03 Aug 2011 15:25:26 +0200 |
| parents | 059ea0ea8d38 |
| children | 58bc264aba38 |
| rev | line source |
|---|---|
| 4 | 1 #!/usr/bin/env python |
| 2 | |
| 3 import sys | |
| 4 import os | |
| 5 | |
| 6 import struct | |
| 7 from math import degrees, radians | |
| 8 from io import BytesIO | |
| 9 from itertools import chain | |
| 10 | |
| 11 import pygame | |
| 12 | |
| 13 import OpenGL | |
| 14 OpenGL.FORWARD_COMPATIBLE_ONLY = True | |
| 15 from OpenGL.GL import * | |
| 16 from OpenGL.GLU import * | |
| 17 | |
| 18 from pytouhou.formats.pbg3 import PBG3 | |
| 19 from pytouhou.formats.std import Stage | |
| 20 from pytouhou.formats.anm0 import Animations | |
| 21 | |
| 22 from pytouhou.utils.matrix import Matrix | |
| 23 | |
| 24 | |
| 25 def load_texture(image, alpha_image=None): | |
| 26 textureSurface = pygame.image.load(image).convert_alpha() | |
| 27 | |
| 28 if alpha_image: | |
| 29 alphaSurface = pygame.image.load(alpha_image) | |
| 30 assert textureSurface.get_size() == alphaSurface.get_size() | |
| 31 for x in range(alphaSurface.get_width()): | |
| 32 for y in range(alphaSurface.get_height()): | |
| 33 r, g, b, a = textureSurface.get_at((x, y)) | |
| 34 color2 = alphaSurface.get_at((x, y)) | |
| 35 textureSurface.set_at((x, y), (r, g, b, color2[0])) | |
| 36 | |
| 37 textureData = pygame.image.tostring(textureSurface, 'RGBA', 1) | |
| 38 | |
| 39 width = textureSurface.get_width() | |
| 40 height = textureSurface.get_height() | |
| 41 | |
| 42 texture = glGenTextures(1) | |
| 43 glBindTexture(GL_TEXTURE_2D, texture) | |
| 44 | |
| 45 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, | |
| 46 GL_UNSIGNED_BYTE, textureData) | |
| 47 | |
| 48 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR) | |
| 49 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR) | |
| 50 | |
| 51 return texture, width, height | |
| 52 | |
| 53 | |
| 54 | |
| 55 def build_objects_faces(stage, anim): | |
| 56 objects_faces = [] | |
| 57 for i, obj in enumerate(stage.objects): | |
| 58 faces = [] | |
| 59 for script_index, x, y, z, width_override, height_override in obj.quads: | |
| 60 #TODO: move mof of it elsewhere | |
| 61 vertices = [] | |
| 62 uvs = [] | |
| 63 vertmat = Matrix() | |
| 64 vertmat.data[0][0] = -.5 | |
| 65 vertmat.data[1][0] = -.5 | |
| 66 | |
| 67 vertmat.data[0][1] = .5 | |
| 68 vertmat.data[1][1] = -.5 | |
| 69 | |
| 70 vertmat.data[0][2] = .5 | |
| 71 vertmat.data[1][2] = .5 | |
| 72 | |
| 73 vertmat.data[0][3] = -.5 | |
| 74 vertmat.data[1][3] = .5 | |
| 75 | |
| 76 for i in range(4): | |
| 77 vertmat.data[2][i] = 0. | |
| 78 vertmat.data[3][i] = 1. | |
| 79 | |
| 80 properties = {} | |
| 81 for time, instr_type, data in anim.scripts[script_index]: | |
| 82 if instr_type == 15: | |
| 83 properties[15] = b'' | |
| 84 break | |
| 85 elif time == 0: #TODO | |
| 86 properties[instr_type] = data | |
| 87 #if 15 not in properties: #TODO: Skip properties | |
| 88 # continue | |
| 89 | |
| 90 #TODO: properties 3 and 4 | |
| 91 if 1 in properties: | |
| 92 tx, ty, tw, th = anim.sprites[struct.unpack('<I', properties[1])[0]] | |
| 93 width, height = 1., 1. | |
| 94 if 2 in properties: | |
| 95 width, height = struct.unpack('<ff', properties[2]) | |
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96 width = width_override or width * tw |
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97 height = height_override or height * th |
| 4 | 98 transform = Matrix.get_scaling_matrix(width, height, 1.) |
| 99 if 7 in properties: | |
| 100 transform = Matrix.get_scaling_matrix(-1., 1., 1.).mult(transform) | |
| 101 if 9 in properties: | |
| 102 rx, ry, rz = struct.unpack('<fff', properties[9]) | |
| 103 transform = Matrix.get_rotation_matrix(-rx, 'x').mult(transform) | |
| 104 transform = Matrix.get_rotation_matrix(ry, 'y').mult(transform) | |
| 105 transform = Matrix.get_rotation_matrix(-rz, 'z').mult(transform) #TODO: minus, really? | |
| 106 if 23 in properties: # Reposition | |
| 107 transform = Matrix.get_translation_matrix(width / 2., height / 2., 0.).mult(transform) | |
| 108 | |
| 109 transform = Matrix.get_translation_matrix(x, y, z).mult(transform) | |
| 110 vertmat = transform.mult(vertmat) | |
| 111 | |
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112 uvs = [(tx / anim.size[0], 1. - (ty / anim.size[1])), |
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113 ((tx + tw) / anim.size[0], 1. - (ty / anim.size[1])), |
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114 ((tx + tw) / anim.size[0], 1. - ((ty + th) / anim.size[1])), |
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115 (tx / anim.size[0], 1. - ((ty + th) / anim.size[1]))] |
| 4 | 116 |
| 117 for i in xrange(4): | |
| 118 w = vertmat.data[3][i] | |
| 119 vertices.append((vertmat.data[0][i] / w, vertmat.data[1][i] / w, vertmat.data[2][i] / w)) | |
| 120 faces.append((vertices, uvs)) | |
| 121 objects_faces.append(faces) | |
| 122 return objects_faces | |
| 123 | |
| 124 | |
| 125 | |
| 126 def objects_faces_to_vertices_uvs(objects): | |
| 127 vertices = tuple(vertex for obj in objects for face in obj for vertex in face[0]) #TODO: check | |
| 128 uvs = tuple(uv for obj in objects for face in obj for uv in face[1]) #TODO: check | |
| 129 return vertices, uvs | |
| 130 | |
| 131 | |
| 132 | |
| 133 def main(path, stage_num): | |
| 134 # Initialize pygame | |
| 135 pygame.init() | |
| 136 window = pygame.display.set_mode((384, 448), pygame.OPENGL | pygame.DOUBLEBUF) | |
| 137 | |
| 138 # Initialize OpenGL | |
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139 glMatrixMode(GL_PROJECTION) |
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140 glLoadIdentity() |
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141 gluPerspective(30, float(window.get_width())/window.get_height(), 101010101./2010101., 101010101./10101.) |
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142 |
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143 glHint(GL_FOG_HINT, GL_NICEST) |
| 4 | 144 glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST) |
| 145 glEnable(GL_DEPTH_TEST) | |
| 146 glEnable(GL_BLEND) | |
| 147 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA) | |
| 148 glEnable(GL_TEXTURE_2D) | |
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149 glEnable(GL_FOG) |
| 4 | 150 glEnableClientState(GL_VERTEX_ARRAY) |
| 151 glEnableClientState(GL_TEXTURE_COORD_ARRAY) | |
| 152 | |
| 153 # Load data | |
| 154 with open(path, 'rb') as file: | |
| 155 archive = PBG3.read(file) | |
| 156 stage = Stage.read(BytesIO(archive.extract('stage%d.std' % stage_num))) | |
| 157 anim = Animations.read(BytesIO(archive.extract('stg%dbg.anm' % stage_num))) | |
| 158 textures_components = [None, None] | |
| 159 for i, component_name in enumerate((anim.first_name, anim.secondary_name)): | |
| 160 if component_name: | |
| 161 textures_components[i] = BytesIO(archive.extract(os.path.basename(component_name))) | |
| 162 texture = load_texture(*textures_components) | |
| 163 | |
| 164 print(stage.name) | |
| 165 | |
| 166 uvs = [] | |
| 167 vertices = [] | |
| 168 objects_faces = build_objects_faces(stage, anim) | |
| 169 objects_instances_faces = [] | |
| 170 for obj, ox, oy, oz in stage.object_instances: | |
| 171 obj_id = stage.objects.index(obj) | |
| 172 | |
| 173 obj_instance = [] | |
| 174 for face_vertices, face_uvs in objects_faces[obj_id]: | |
| 175 obj_instance.append((tuple((x + ox, y + oy, z + oz) for x, y, z in face_vertices), | |
| 176 face_uvs)) | |
| 177 objects_instances_faces.append(obj_instance) | |
| 178 | |
| 8 | 179 def keyfunc(obj): |
| 180 return min(z for face in obj for x, y, z in face[0]) | |
| 181 objects_instances_faces.sort(key=keyfunc, reverse=True) | |
| 182 | |
| 4 | 183 vertices, uvs = objects_faces_to_vertices_uvs(objects_instances_faces) |
| 184 nb_vertices = len(vertices) | |
| 185 vertices_format = 'f' * (3 * nb_vertices) | |
| 186 uvs_format = 'f' * (2 * nb_vertices) | |
| 187 vertices, uvs = objects_faces_to_vertices_uvs(objects_instances_faces) | |
| 188 glVertexPointer(3, GL_FLOAT, 0, struct.pack(vertices_format, *chain(*vertices))) | |
| 189 glTexCoordPointer(2, GL_FLOAT, 0, struct.pack(uvs_format, *chain(*uvs))) | |
| 190 | |
| 191 x, y, z = 0, 0, 0 | |
| 192 frame = 0 | |
| 193 interpolation = 0, 0, 0 | |
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194 interpolation2 = 0, 0, 0 |
| 4 | 195 |
| 196 # Main loop | |
| 197 clock = pygame.time.Clock() | |
| 198 while True: | |
| 199 for event in pygame.event.get(): | |
| 200 if event.type == pygame.QUIT or (event.type == pygame.KEYDOWN and event.key in (pygame.K_ESCAPE, pygame.K_q)): | |
| 201 sys.exit(0) | |
| 202 elif event.type == pygame.KEYDOWN: | |
| 203 if event.key == pygame.K_RETURN and event.mod & pygame.KMOD_ALT: | |
| 204 pygame.display.toggle_fullscreen() | |
| 205 | |
| 206 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT) | |
| 207 | |
| 208 for frame_num, message_type, data in stage.script: | |
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209 if frame_num == frame and message_type == 1: |
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210 #TODO: move interpolation elsewhere |
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211 next_fog_b, next_fog_g, next_fog_r, _, next_fog_start, next_fog_end = struct.unpack('<BBBBff', data) |
| 4 | 212 if frame_num == frame and message_type == 3: |
| 213 duration, junk1, junk2 = struct.unpack('<III', data) | |
| 214 interpolation = frame_num, duration, frame_num + duration | |
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215 old_unknownx, old_dy, old_dz = unknownx, dy, dz |
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216 if frame_num == frame and message_type == 4: |
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217 duration, junk1, junk2 = struct.unpack('<III', data) |
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218 interpolation2 = frame_num, duration, frame_num + duration |
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219 old_fog_b, old_fog_g, old_fog_r, old_fog_start, old_fog_end = fog_b, fog_g, fog_r, fog_start, fog_end |
| 4 | 220 if frame_num <= frame and message_type == 0: |
| 221 last_message = frame_num, message_type, data | |
| 222 if frame_num <= frame and message_type == 2: | |
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223 next_unknownx, next_dy, next_dz = struct.unpack('<fff', data) |
| 4 | 224 if frame_num > frame and message_type == 0: |
| 225 next_message = frame_num, message_type, data | |
| 226 break | |
| 227 | |
| 228 if frame < interpolation[2]: | |
| 229 truc = float(frame - interpolation[0]) / interpolation[1] | |
| 230 unknownx = old_unknownx + (next_unknownx - old_unknownx) * truc | |
| 231 dy = old_dy + (next_dy - old_dy) * truc | |
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232 dz = old_dz + (next_dz - old_dz) * truc |
| 4 | 233 else: |
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234 unknownx, dy, dz = next_unknownx, next_dy, next_dz |
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235 |
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236 if frame < interpolation2[2]: |
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237 truc = float(frame - interpolation2[0]) / interpolation2[1] |
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238 fog_b = old_fog_b + (next_fog_b - old_fog_b) * truc |
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239 fog_g = old_fog_g + (next_fog_g - old_fog_g) * truc |
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240 fog_r = old_fog_r + (next_fog_r - old_fog_r) * truc |
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241 fog_start = old_fog_start + (next_fog_start - old_fog_start) * truc |
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242 fog_end = old_fog_end + (next_fog_end - old_fog_end) * truc |
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243 else: |
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244 fog_r, fog_g, fog_b, fog_start, fog_end = next_fog_r, next_fog_g, next_fog_b, next_fog_start, next_fog_end |
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245 |
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246 |
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247 glFogi(GL_FOG_MODE, GL_LINEAR) |
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248 glFogf(GL_FOG_START, fog_start) |
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249 glFogf(GL_FOG_END, fog_end) |
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250 glFogfv(GL_FOG_COLOR, (fog_r / 255., fog_g / 255., fog_b / 255., 1.)) |
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251 |
| 4 | 252 |
| 253 x1, y1, z1 = struct.unpack('<fff', last_message[2]) | |
| 254 x2, y2, z2 = struct.unpack('<fff', next_message[2]) | |
| 255 | |
| 256 truc = (float(frame) - last_message[0]) / (next_message[0] - last_message[0]) | |
| 257 | |
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258 x = x1 + (x2 - x1) * truc |
| 4 | 259 y = y1 + (y2 - y1) * truc |
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260 z = z1 + (z2 - z1) * truc |
| 4 | 261 |
| 262 | |
| 263 glMatrixMode(GL_MODELVIEW) | |
| 264 glLoadIdentity() | |
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265 # Some explanations on the magic constants: |
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266 # 192. = 384. / 2. = width / 2. |
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267 # 224. = 448. / 2. = height / 2. |
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268 # 835.979370 = 224./math.tan(math.radians(15)) = (height/2.)/math.tan(math.radians(fov/2)) |
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269 # This is so that objects on the (O, x, y) plane use pixel coordinates |
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270 gluLookAt(192., 224., - 835.979370 * dz, |
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271 192., 224. - dy, 750 - 835.979370 * dz, 0., -1., 0.) #TODO: 750 might not be accurate |
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272 #print(glGetFloat(GL_MODELVIEW_MATRIX)) |
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273 glTranslatef(-x, -y, -z) |
| 4 | 274 |
| 275 glDrawArrays(GL_QUADS, 0, nb_vertices) | |
| 276 | |
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277 #TODO: show the game itself |
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278 # It is displayed on (0, 0, 0), (0, 448, 0), (388, 448, 0), (388, 0, 0) |
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279 # using a camera at (192, 224, -835.979370) looking right behind itself |
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280 # Depth test should be disabled when rendering the game |
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281 |
| 4 | 282 pygame.display.flip() |
| 283 clock.tick(120) | |
| 284 frame += 1 | |
| 285 | |
| 286 | |
| 287 | |
| 288 try: | |
| 289 file_path, stage_num = sys.argv[1:] | |
| 290 stage_num = int(stage_num) | |
| 291 except ValueError: | |
| 292 print('Usage: %s std_dat_path stage_num' % sys.argv[0]) | |
| 293 else: | |
| 294 main(file_path, stage_num) | |
| 295 |