entity.py (17f6490) - voxels

entity.py

from libs import *

class Entity:
    def __init__(self, verts, col, pos, **kwargs):
        self.verts = vec(verts)
        self.col = vec(col)
        self.pos = vec(pos)
        self.draw_mode = kwargs.get("mode", GL_TRIANGLE_STRIP)
        self.hud = kwargs.get("hud", False)
        self.orient = np.identity(4, dtype=FLOAT)
        self.onclick = lambda s, b, n: print(f"clicked {s}:{n} with button {b}")
        self.vao = None
        self.vbos = [[None, 0], [None, 0]]

def col_list(self):
        return np.repeat(vec([self.col]), len(self.verts), 0)

def update_attr(self, i, l=None):
        if l is None:
            l = self.verts if i == 0 else self.col_list()
        if self.vao:
            glBindBuffer(GL_ARRAY_BUFFER, self.vbos[i][0])
            if l.shape[0] != self.vbos[i][1]:
                glBufferData(GL_ARRAY_BUFFER, l.nbytes, l, GL_DYNAMIC_DRAW)
                self.vbos[i][1] = l.shape[0]
            else:
                glBufferSubData(GL_ARRAY_BUFFER, 0, l.nbytes, l)

def build_vao(self):
        self.vao = glGenVertexArrays(1)
        glBindVertexArray(self.vao)
        for (i, l) in enumerate((self.verts, self.col_list())):
            self.vbos[i][0] = glGenBuffers(1)
            self.update_attr(i, l)
            glEnableVertexAttribArray(i)
            glVertexAttribPointer(i, l.shape[1], GL_FLOAT, GL_FALSE, 0, None)

def translate(self):
        m = np.identity(4, dtype=FLOAT)
        m[:3, 3] = self.pos
        return m

def rotate(self, theta, axis):
        x, y, z = axis
        c, s = np.cos(theta), np.sin(theta)
        t = 1 - c
        self.orient = vec([
            [t*x*x + c,   t*x*y - s*z, t*x*z + s*y, 0],
            [t*x*y + s*z, t*y*y + c,   t*y*z - s*x, 0],
            [t*x*z - s*y, t*y*z + s*x, t*z*z + c,   0],
            [0, 0, 0, 1]
        ]) @ self.orient

def click(self, button, face):
        self.onclick(self, button, face)

voxels

Refactor WorldRegion and add crosshair