richlib: simple API on top of raylib

Author: electronstudio

raylib/richlib/__init__.py

@@ -0,0 +1,328 @@
+""" Richlib, simple access to Raylib
+"""
+__version__ = '0.1'
+
+from ..dynamic import ffi, raylib as rl
+from ..colors import *
+
+import sys
+
+data_dir = ""
+
+camera = ffi.new("struct Camera3D *")
+camera.position = (0.0, 100, 100)
+camera.target = (0.0, 0.0, 0.0)
+camera.up = (0, 1, 0)
+camera.fovy = 45
+camera.type = rl.CAMERA_PERSPECTIVE
+
+mod = sys.modules['__main__']
+
+
+class Vector(list):
+    @property
+    def x(self):
+        return self[0]
+
+    @x.setter
+    def x(self, value):
+        self[0] = value
+
+    @property
+    def y(self):
+        return self[1]
+
+    @y.setter
+    def y(self, value):
+        self[1] = value
+
+    @property
+    def z(self):
+        return self[2]
+
+    @z.setter
+    def z(self, value):
+        self[2] = value
+
+
+def make_color(c):
+    if isinstance(c, str):
+        return globals()[c.upper()]
+    else:
+        return c
+
+
+def clear(color=BLACK):
+    rl.ClearBackground(color)
+
+
+class Shape:
+    @property
+    def color(self):
+        return self._color
+
+    @color.setter
+    def color(self, value):
+        if isinstance(value, str):
+            self._color = globals()[value.upper()]
+        else:
+            self._color = value
+
+    @property
+    def pos(self):
+        return self._pos
+
+    @pos.setter
+    def pos(self, value):
+        self._pos = Vector(value)
+
+    @property
+    def wire_color(self):
+        return self._wire_color
+
+    @wire_color.setter
+    def wire_color(self, value):
+        if isinstance(value, str):
+            self._wire_color = globals()[value.upper()]
+        else:
+            self._wire_color = value
+
+    @property
+    def x(self):
+        return self.pos.x
+
+    @x.setter
+    def x(self, value):
+        self.pos.x = value
+
+    @property
+    def y(self):
+        return self.pos.y
+
+    @y.setter
+    def y(self, value):
+        self.pos.y = value
+
+    @property
+    def z(self):
+        return self.pos.z
+
+    @z.setter
+    def z(self, value):
+        self.pos.z = value
+
+
+class Box(Shape):
+    def __init__(self, position, size, color=RED, wires=True, wire_color=DARKGRAY):
+        self.pos = position
+        self.size = size
+        self.color = color
+        self.wire_color = wire_color  # make_color(wire_color)
+        self.wires = wires
+
+    # def __getattr__(self, item):
+    #     return self.pos.item
+    #
+    # def __setattr__(self, key, value):
+    #     self.pos.key = value
+
+    @property
+    def size(self):
+        return self._size
+
+    @size.setter
+    def size(self, value):
+        print("setting size ", value, type(value))
+        self._size = Vector(value)
+
+    def get_bounding_box(self):
+        return (
+            (
+                self.pos.x - self.size.x / 2,
+                self.pos.y - self.size.y / 2,
+                self.pos.z - self.size.z / 2,
+            ),
+            (
+                self.pos.x + self.size.x / 2,
+                self.pos.y + self.size.y / 2,
+                self.pos.z + self.size.z / 2,
+            )
+        )
+
+    def draw(self):
+        rl.DrawCubeV(self.pos, self.size, self.color)
+        if self.wires:
+            rl.DrawCubeWiresV(
+                self.pos, self.size, self.wire_color
+            )
+
+    def check_collision(self, other):
+        if isinstance(other, Sphere):
+            r = rl.CheckCollisionBoxSphere(
+                self.get_bounding_box(), other.pos, other.radius
+            )
+            return r
+        elif isinstance(other, Box):
+            return rl.CheckCollisionBoxes(self.get_bounding_box(), other.get_bounding_box())
+        elif isinstance(other, Actor):
+            return self.check_collision(other.collision_sphere)
+
+
+class Sphere(Shape):
+    def __init__(self, position, radius, color=RED, wires=True, wire_color=DARKGRAY):
+        self.pos = position
+        self.radius = radius
+        self.color = color
+        self.wire_color = wire_color
+        self.wires = wires
+
+    def draw(self):
+        rl.DrawSphere(self.pos, self.radius, self.color)
+        if self.wires:
+            rl.DrawSphereWires(self.pos, self.radius, 32, 32, self.wire_color)
+
+    def check_collision(self, other):
+        if isinstance(other, Sphere):
+            return rl.CheckCollisionSpheres(
+                self.pos, self.radius, other.pos, other.radius
+            )
+        elif isinstance(other, Box):
+            return rl.CheckCollisionBoxSphere(
+                other.get_bounding_box(), self.pos, self.radius
+            )
+        elif isinstance(other, Actor):
+            return self.check_collision(other.collision_sphere)
+
+
+class Actor(Shape):
+    def __init__(self, model_file, position=Vector([0, 0, 0]), collision_radius=1, texture_file="",
+                 rotation_axis=Vector([0, 1, 0]), rotation_angle=0, scale=Vector([1, 1, 1]), color=WHITE, wires=False,
+                 wire_color=DARKGRAY):
+        #super().__init__(position, collision_radius, color, wires, wire_color)
+
+        self.pos = position
+        self.color = color
+        self.wire_color = wire_color
+        self.wires = wires
+
+        self.model_file = model_file
+        if texture_file == "":
+            texture_file = model_file + "_diffuse"
+        self.texture_file = texture_file
+        self.scale = scale
+        self.rotation_axis = rotation_axis
+        self.rotation_angle = rotation_angle
+        self.collision_radius = collision_radius
+        self.collision_sphere = Sphere(position, collision_radius, RED)
+
+        self.loaded = False
+
+    def load_data(self):
+        self.loaded = True
+        print("*** DATA_DIR=", data_dir)
+        self.model = rl.LoadModel((data_dir + self.model_file + '.obj').encode('utf-8'))
+        texture = rl.LoadTexture((data_dir + self.texture_file + '.png').encode('utf-8'))
+        self.model.materials[0].maps[rl.MAP_DIFFUSE].texture = texture
+
+    def calc_bounding_box(self):
+        bb = rl.MeshBoundingBox(self.model.meshes[0])
+
+        bb.min.x *= self.scale.x
+        bb.min.y *= self.scale.y
+        bb.min.z *= self.scale.z
+        bb.max.x *= self.scale.x
+        bb.max.y *= self.scale.y
+        bb.max.z *= self.scale.z
+
+        bb.min.x += self.pos.x
+        bb.min.y += self.pos.y
+        bb.min.z += self.pos.z
+        bb.max.x += self.pos.x
+        bb.max.y += self.pos.y
+        bb.max.z += self.pos.z
+        return bb
+
+    def calc_collision_sphere(self):
+        centre_x = (self.bounding_box.max.x + self.bounding_box.min.x)/2
+        centre_y = (self.bounding_box.max.y + self.bounding_box.min.y)/2
+        centre_z = (self.bounding_box.max.z + self.bounding_box.min.z)/2
+        sphere = Sphere((centre_x, centre_y, centre_z), self.collision_radius, RED)
+        return sphere
+
+    def draw(self):
+        if not self.loaded:
+            self.load_data()
+        self.bounding_box = self.calc_bounding_box()
+        self.collision_sphere = self.calc_collision_sphere()
+        rl.DrawModelEx(self.model, self.pos, self.rotation_axis, self.rotation_angle, self.scale, self.color)
+        if self.wires:
+            rl.DrawBoundingBox(self.bounding_box, self.wire_color)
+            self.collision_sphere.draw()
+
+    def check_collision(self, other):
+        return self.collision_sphere.check_collision(other)
+
+def run():
+    screen_width = 800
+    screen_height = 450
+    title = "RayLibPyZero"
+
+    if hasattr(mod, "WIDTH"):
+        screen_width = mod.WIDTH
+
+    if hasattr(mod, "HEIGHT"):
+        screen_height = mod.HEIGHT
+
+    if hasattr(mod, "TITLE"):
+        title = mod.TITLE
+
+    if hasattr(mod, "DATA_DIR"):
+        global data_dir
+        data_dir = mod.DATA_DIR
+
+    rl.SetConfigFlags(rl.FLAG_VSYNC_HINT + rl.FLAG_MSAA_4X_HINT)
+
+    rl.InitWindow(screen_width, screen_height, title.encode('utf-8'))
+
+    rl.SetTargetFPS(60)
+
+    if hasattr(mod, "CAMERA"):
+        rl.SetCameraMode(camera, mod.CAMERA)
+
+    if hasattr(mod, "init"):
+        mod.init()
+
+    while not rl.WindowShouldClose():
+        if hasattr(mod, "update"):
+            mod.update()
+        rl.UpdateCamera(camera)
+        if rl.IsKeyPressed(rl.KEY_F):
+            rl.ToggleFullscreen()
+        if rl.IsKeyPressed(rl.KEY_ESCAPE):
+            rl.Exit()
+        rl.BeginDrawing()
+        rl.BeginMode3D(camera[0])
+        if hasattr(mod, "draw3d"):
+            mod.draw3d()
+        rl.EndMode3D()
+        if hasattr(mod, "draw2d"):
+            mod.draw2d()
+        if hasattr(mod, "draw"):
+            mod.draw()
+        rl.EndDrawing()
+    rl.CloseWindow()
+
+
+class Keyboard:
+    def __getattr__(self, kname):
+        # return is a reserved word, so alias enter to return
+        if kname == 'enter':
+            kname = 'return'
+        kname = kname.upper()
+        if not kname.startswith("KEY_"):
+            kname = "KEY_" + kname
+
+        return rl.IsKeyDown(getattr(rl, kname))
+
+
+keyboard = Keyboard()

test_richlib.py

@@ -0,0 +1,50 @@
+from raylib.richlib import *
+
+WIDTH=800
+HEIGHT=640
+#CAMERA=CAMERA_FIRST_PERSON
+DATA_DIR="examples/models/resources/models/"
+
+player = Box((0, 10, 20), (10, 20, 10), GREEN)
+enemy_box = Box((-40, 10, 0), (20, 20, 20), (70,70,70))
+enemy_sphere = Sphere((40, 15, 0), 15, 'gray')
+castle = Actor("castle", collision_radius=15)
+castle.z=-50
+castle.scale.y=2
+castle.scale.x=1
+castle.scale.z=1
+
+#def init():
+#    set_camera_mode(camera, CAMERA_FIRST_PERSON)
+
+def update():
+    if keyboard.right:
+        player.pos.x += 2
+    elif keyboard.left:
+        player.pos.x -= 2
+    elif keyboard.down:
+        player.pos.z += 2
+    elif keyboard.up:
+        player.pos.z -= 2
+
+    if player.check_collision(enemy_box) or player.check_collision(enemy_sphere) or player.check_collision(castle):
+        player.color = RED
+    else:
+        player.color = GREEN
+
+
+def draw3d():
+    rl.ClearBackground(WHITE)
+    enemy_box.draw()
+    enemy_sphere.draw()
+    player.draw()
+    castle.draw()
+    rl.DrawGrid(10, 10)
+
+
+def draw2d():
+    rl.DrawText(b"Move player with cursors to collide", 220, 40, 20, GRAY)
+    rl.DrawFPS(10, 10)
+
+
+run()