1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
|
import glfw
import typing
import numpy as np
from OpenGL.GL import *
import OpenGL.GL.shaders as shaders
from .twod import Texture
from .input.callbacks import CallbackHandler
if typing.TYPE_CHECKING:
from .app import TxtGameApp
class PlatformError(Exception):
pass
class PlatformComponent:
def __init__(self, app: 'TxtGameApp'):
self.app = app
def init(self):
glfw.init()
self.init_window()
glfw.make_context_current(self.app.window)
glViewport(0, 0, *self.app.size)
@staticmethod
def monotonic_time():
return glfw.get_time()
@staticmethod
def enable_vsync():
glfw.swap_interval(1)
def init_window(self):
glfw.window_hint(glfw.CLIENT_API, glfw.OPENGL_API)
glfw.window_hint(glfw.RESIZABLE, glfw.FALSE)
glfw.window_hint(glfw.OPENGL_FORWARD_COMPAT, glfw.TRUE)
glfw.window_hint(glfw.OPENGL_PROFILE, glfw.OPENGL_CORE_PROFILE)
glfw.window_hint(glfw.OPENGL_DEBUG_CONTEXT, glfw.TRUE)
glfw.window_hint(glfw.CONTEXT_VERSION_MAJOR, 3)
glfw.window_hint(glfw.CONTEXT_VERSION_MINOR, 3)
self.app.window = glfw.create_window(
*self.app.size, self.app.name, None, None)
if not self.app.window:
raise PlatformError("Failed to initialize glfw window")
@property
def should_close(self) -> bool:
return glfw.window_should_close(self.app.window)
@should_close.setter
def should_close(self, val: bool):
glfw.set_window_should_close(val, self.app.window)
@staticmethod
def poll_events():
glfw.poll_events()
@staticmethod
def init_callbacks(window, handler: CallbackHandler):
glfw.set_key_callback(window, handler.get_keyboard_input_callback)
#glfw.set_mouse_button_callback(window, handler.get_mouse_click_callback())
#glfw.set_cursor_pos_callback(window, handler.get_mouse_move_callback())
def cleanup(self):
glfw.destroy_window(self.app.window)
glfw.terminate()
def swap_buffers(self):
glfw.swap_buffers(self.app.window)
@staticmethod
def set_clear_color(r, g, b, a):
glClearColor(r, g, b, a)
@staticmethod
def print_debug_message(source, msg_type, msg_id, severity, length, raw, user):
print('OPENGL ERROR', source, msg_type, msg_id, severity)
def check_debug(self):
assert (glGetIntegerv(GL_CONTEXT_FLAGS)
& GL_CONTEXT_FLAG_DEBUG_BIT) != 0
glDebugMessageCallback(GLDEBUGPROC(self.print_debug_message), None)
@staticmethod
def clear_background(depth_buffer=False):
glClear(GL_COLOR_BUFFER_BIT | (
depth_buffer and GL_DEPTH_BUFFER_BIT or 0))
class CoordinateComponent:
def __init__(self, app: 'TxtGameApp'):
self.screen_x = [-1, 1]
self.screen_y = [1, -1]
self.app = app
@property
def pixel_x(self):
return [0, self.app.size[0]]
@property
def pixel_y(self):
return [0, self.app.size[1]]
def from_screen_to_pixels(self, x: float, y: float) -> typing.Tuple[int, int]:
return int(np.interp(x, self.screen_x, self.pixel_x)), \
int(np.interp(y, self.screen_y, self.pixel_y))
def from_pixels_to_screen(self, x: int, y: int) -> typing.Tuple[float, float]:
return np.interp(x, self.pixel_x, self.screen_x), \
np.interp(y, self.pixel_y, self.screen_y)
class ShaderComponent:
def __init__(self, app: 'TxtGameApp'):
self.app = app
@staticmethod
def load_shaders(vertex_file: str, fragment_file: str):
with open(vertex_file) as fp:
vertex_source = fp.read()
with open(fragment_file) as fp:
fragment_source = fp.read()
vertex_shader = shaders.compileShader(vertex_source, GL_VERTEX_SHADER)
fragment_shader = shaders.compileShader(
fragment_source, GL_FRAGMENT_SHADER)
return shaders.compileProgram(vertex_shader, fragment_shader)
@staticmethod
def bind_shader(prog_id: int):
glUseProgram(prog_id)
@staticmethod
def get_uniform_location(prog_id: int, name: str):
return glGetUniformLocation(prog_id, name)
class RenderComponent:
def __init__(self, app: 'TxtGameApp'):
self.app = app
@staticmethod
def setup_vertex_arrays():
arr = glGenVertexArrays(1)
glBindVertexArray(arr)
@staticmethod
def setup_buffer(arr, mode=GL_STATIC_DRAW):
if not hasattr(arr, 'itemsize'):
arr = np.array(arr, np.float32)
buf = glGenBuffers(1)
glBindBuffer(GL_ARRAY_BUFFER, buf)
glBufferData(GL_ARRAY_BUFFER, arr.itemsize *
arr.size, arr, mode)
return buf
@staticmethod
def triangle(buf, count=3):
glEnableVertexAttribArray(0)
glBindBuffer(GL_ARRAY_BUFFER, buf)
glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 0, None)
glDrawArrays(GL_TRIANGLE_STRIP, 0, count)
glDisableVertexAttribArray(0)
@staticmethod
def bind_texture(shader_location, texture):
glActiveTexture(GL_TEXTURE0)
glBindTexture(GL_TEXTURE_2D, texture.gl_texid)
glUniform1i(shader_location, 0)
def textured_triangle(self, triangle, uvs, count=3):
glEnableVertexAttribArray(1)
glBindBuffer(GL_ARRAY_BUFFER, uvs)
glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 0, None)
self.triangle(triangle, count)
glDisableVertexAttribArray(1)
def setup_texture(self, width: int, height: int, data: np.ndarray):
tex_id = glGenTextures(1)
glPixelStorei(GL_UNPACK_ALIGNMENT, 4)
glBindTexture(GL_TEXTURE_2D, tex_id)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 0)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0)
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, data)
return tex_id
def free_texture(self, gl_texid: int):
glBindTexture(gl_texid, 0) # unbind the texture
glDeleteTextures(1, gl_texid) # actually delete it
|
