1 files changed, 312 insertions, 0 deletions
diff --git a/rayito/RtoObject.py b/rayito/RtoObject.py
new file mode 100755
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+++ b/rayito/RtoObject.py
@@ -0,0 +1,312 @@
+#! /usr/bin/env python
+# Rayito objects
+# Copyright (C) 2011 Gabriel Eirea
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+# Contact information:
+# Gabriel Eirea geirea@gmail.com
+# Ceibal Jam http://ceibaljam.org
+
+import pygame
+
+class RtoObject():
+    """ Class for rayito objects.
+
+    position: (x, y) of upper-left corner in pixels
+    layer: layer number, high is up, low is down
+    """
+
+    def __init__(self, position, layer = 0):
+        self._position = [position[0], position[1]]
+        self._layer = layer
+        self._visible = False
+        self._moving = False
+        self._velocity = (0, 0)
+        self._last_update = 0
+
+    def hide(self):
+        self._visible = False
+
+    def show(self):
+        self._visible = True
+
+    def move_to(self, newpos):
+        self._position = [newpos[0], newpos[1]]
+
+    def move_by(self, relpos):
+        self._position[0] += relpos[0]
+        self._position[1] += relpos[1]
+
+    def change_layer(self, new_layer):
+        self._layer = new_layer
+
+    def move_start(self, vel):
+        # vel should be in pixels per millisecond
+        self._moving = True
+        self._velocity = vel
+
+    def move_stop(self):
+        self._moving = False
+
+    def update(self, time):
+        pixels_x =  int(self._velocity[0]*(time - self._last_update))
+        pixels_y =  int(self._velocity[1]*(time - self._last_update))
+        if self._moving:
+            self._position[0] += pixels_x
+            self._position[1] += pixels_y
+        self._last_update = time
+        self.update_specific(time)
+
+    def update_specific(self, time):
+        pass
+
+    def render(self, screen):
+        pass
+
+    def is_pressed(self, pos):
+        return False
+
+
+class RtoImage(RtoObject):
+    """ Class for rayito images.
+
+    image: pygame surface with the image
+    """
+
+    def __init__(self, image, position, layer = 0):
+        RtoObject.__init__(self, position, layer)
+        self._image = image
+
+    def scale_to(self, target_size):
+        w = self._image.get_width()
+        h = self._image.get_height()
+        center = (self._position[0]+int(w/2), self._position[1]+int(h/2))
+        tmp = pygame.transform.scale(self._image, target_size)
+        wtmp = tmp.get_width()
+        htmp = tmp.get_height()
+        self._position = [center[0]-int(wtmp/2), center[1]-int(htmp/2)]
+        self._image = tmp
+        del tmp
+
+    def scale_by(self, ratio):
+        w = self._image.get_width()
+        h = self._image.get_height()
+        center = (self._position[0]+int(w/2), self._position[1]+int(h/2))
+        tmp = pygame.transform.scale(self._image,
+                          (int(self._image.get_width()*ratio),
+                           int(self._image.get_height()*ratio)))
+        wtmp = tmp.get_width()
+        htmp = tmp.get_height()
+        self._position = [center[0]-int(wtmp/2), center[1]-int(htmp/2)]
+        self._image = tmp
+        del tmp
+
+    def flip_hor(self):
+        tmp = pygame.transform.flip(self._image, True, False)
+        self._image = tmp
+        del tmp
+
+    def flip_ver(self):
+        tmp = pygame.transform.scale(self._image, False, True)
+        self._image = tmp
+        del tmp
+
+    def rotate(self, angle):
+        w = self._image.get_width()
+        h = self._image.get_height()
+        center = (self._position[0]+int(w/2), self._position[1]+int(h/2))
+        tmp = pygame.transform.rotate(self._image, angle)
+        wtmp = tmp.get_width()
+        htmp = tmp.get_height()
+        self._position = [center[0]-int(wtmp/2), center[1]-int(htmp/2)]
+        self._image = tmp
+        del tmp
+
+    def render(self, screen):
+        if self._visible:
+            screen.blit(self._image,self._position)
+
+
+class RtoDialog(RtoObject):
+    """Class for rayito dialogs 
+
+    text: list with text to display; each element can have \n to separate lines
+    font: pygame font to use
+    bg_color: background color (R, G, B)
+    fg_color: text color (R, G, B)
+    """
+
+    def __init__(self, text, font, bg_color, fg_color, position, layer = 0):
+        RtoObject.__init__(self, position, layer)
+        self._font = font
+        self._text = text
+        self._ntexts = len(text)
+        self._current_text = 0
+        self._bg_color = bg_color
+        self._fg_color = fg_color
+        # compute size
+        self._width = 0
+        self._height = 0
+        for t in self._text:
+            lines = t.split("\n")
+            lh = 0
+            for l in lines:
+                (w, h) = self._font.size(l)
+                if w > self._width:
+                    self._width = w
+                lh += h
+            if lh > self._height:
+                self._height = lh
+        self._width += 10
+        self._height += 10
+        # create empty background
+        self._bg = pygame.Surface((self._width, self._height))
+        self._bg.fill(self._bg_color)
+        # render first line of text
+        self.next_text()
+
+    def next_text(self):
+        if self._current_text == self._ntexts:
+            self.hide()
+            return False
+        self._image = self._bg.copy()
+        yline = 5
+        for l in self._text[self._current_text].split("\n"):
+            text_img = self._font.render(l, 1, self._fg_color)
+            textrect = text_img.get_rect()
+            textrect.left = 5
+            textrect.top = yline
+            self._image.blit(text_img, textrect)
+            yline += self._font.get_height()
+        self._current_text += 1
+        return True
+
+    def render(self, screen):
+        if self._visible:
+            screen.blit(self._image, self._position)
+
+    def restart(self):
+        self._current_text = 0
+        self.next_text()
+
+
+class RtoButton(RtoObject):
+    """Class for rayito buttons 
+
+    text: text to display; can have \n to separate lines
+    font: pygame font to use
+    bg_color: background color (R, G, B)
+    fg_color: text color (R, G, B)
+    """
+
+    def __init__(self, text, font, bg_color, fg_color, position, layer = 0):
+        RtoObject.__init__(self, position, layer)
+        self._font = font
+        self._text = text
+        self._bg_color = bg_color
+        self._fg_color = fg_color
+        # compute size
+        self._width = 0
+        self._height = 0
+        lines = self._text.split("\n")
+        for l in lines:
+            (w, h) = self._font.size(l)
+            if w > self._width:
+                self._width = w
+            self._height += h
+        self._width += 10
+        self._height += 10
+        # create empty background
+        self._image = pygame.Surface((self._width, self._height))
+        self._image.fill(self._bg_color)
+        yline = 5
+        for l in self._text.split("\n"):
+            text_img = self._font.render(l, 1, self._fg_color)
+            textrect = text_img.get_rect()
+            textrect.left = 5
+            textrect.top = yline
+            self._image.blit(text_img, textrect)
+            yline += h
+
+    def render(self, screen):
+        if self._visible:
+            screen.blit(self._image, self._position)
+
+    def is_pressed(self, pos):
+        if pos[0] > self._position[0] \
+                and pos[0] < self._position[0] + self._width \
+                and pos[1] > self._position[1] \
+                and pos[1] < self._position[1] + self._height:
+            return True
+        else:
+            return False
+
+
+class RtoSprite(RtoObject):
+    """Class for rayito sprites.
+
+    images: list with sprite images (each one a pygame surface)
+    frames: list with image# for every frame
+    next_frames: list with next frame from current one
+    dxs: list with dx for current frame (in pixels)
+    dys: list with dy for current frame (in pixels)
+    """
+
+    def __init__(self, images, frames, next_frames, dxs, dys,
+                 position, layer = 0):
+        RtoObject.__init__(self, position, layer)
+        self._images = images
+        self._frames = frames
+        self._next_frames = next_frames
+        self._dxs = dxs
+        self._dys = dys
+        self._frame = 0
+        self._image = self._images[self._frames[self._frame]]
+
+    def update_specific(self, time):
+        self._position[0] += self._dxs[self._frame]
+        self._position[1] += self._dys[self._frame]
+        self._frame = self._next_frames[self._frame]
+        self._image = self._images[self._frames[self._frame]]
+        self._last_update = time
+
+    def render(self, screen):
+        screen.blit(self._image, self._position)
+
+    def update_frame(self, fr):
+        self._frame = fr
+
+
+class RtoSound():
+    """Class for rayito sounds.
+
+    sound: pygame.mixer.Sound object
+    volume: volume (between 0 and 1)
+    """
+
+    def __init__(self, sound, volume = 1):
+        self._sound = sound
+        self._volume = volume
+
+    def play(self):
+        self._sound.play()
+        
+    def set_volume(self, vol):
+        if vol >= 0 and vol <= 1:
+            self._sound.set_volume(vol)
+
+    def update(self, time):
+        pass
+