Changeset 156:94a2456696af for nagslang/protagonist.py

Timestamp:

09/02/13 21:52:24 (8 years ago)

Author:

Neil Muller <drnlmuller@…>

Branch:

default

Phase:

public

Message:

front and back views

File:

• nagslang/protagonist.py (modified) (8 diffs)

nagslang/protagonist.py

@@ -1 +1 @@
 import pymunk
 import pymunk.pygame_util
+
+import math
 
 from nagslang.constants import COLLISION_TYPE_PLAYER, ZORDER_MID
@@ -16 +18 @@
 
     HUMAN_FORM = 'human'
+    HUMAN_FORM_BACK = 'human_back'
     WOLF_FORM = 'wolf'
+    WOLF_FORM_BACK = 'wolf_back'
 
     def __init__(self, space, position):
@@ -23 +27 @@
         self.inventory = {}
         self.form = self.HUMAN_FORM
+        self.render_form = self.HUMAN_FORM
 
         super(Protagonist, self).__init__(
@@ -64 +69 @@
                  self._get_image('human_2.png', FLIP_H),
                  self._get_image('human_2.png', FLIP_H))),
+            self.HUMAN_FORM_BACK: AnimatedFacingImageRenderer(
+                (self._get_image('human_back_1.png'),
+                 self._get_image('human_back_1.png'),
+                 self._get_image('human_back_1.png'),
+                 self._get_image('human_back_2.png'),
+                 self._get_image('human_back_2.png'),
+                 self._get_image('human_back_2.png')),
+                (self._get_image('human_back_1.png', FLIP_H),
+                 self._get_image('human_back_1.png', FLIP_H),
+                 self._get_image('human_back_1.png', FLIP_H),
+                 self._get_image('human_back_2.png', FLIP_H),
+                 self._get_image('human_back_2.png', FLIP_H),
+                 self._get_image('human_back_2.png', FLIP_H))),
             self.WOLF_FORM: AnimatedFacingImageRenderer(
                 (self._get_image('werewolf_1.png'),
@@ -77 +95 @@
                  self._get_image('werewolf_2.png', FLIP_H),
                  self._get_image('werewolf_2.png', FLIP_H))),
+            self.WOLF_FORM_BACK: AnimatedFacingImageRenderer(
+                (self._get_image('werewolf_back_1.png'),
+                 self._get_image('werewolf_back_1.png'),
+                 self._get_image('werewolf_back_1.png'),
+                 self._get_image('werewolf_back_2.png'),
+                 self._get_image('werewolf_back_2.png'),
+                 self._get_image('werewolf_back_2.png')),
+                (self._get_image('werewolf_back_1.png', FLIP_H),
+                 self._get_image('werewolf_back_1.png', FLIP_H),
+                 self._get_image('werewolf_back_1.png', FLIP_H),
+                 self._get_image('werewolf_back_2.png', FLIP_H),
+                 self._get_image('werewolf_back_2.png', FLIP_H),
+                 self._get_image('werewolf_back_2.png', FLIP_H))),
         }
         for renderer in self._renderers.values():
@@ -100 +131 @@
         self.impulse_factor = 4000
         self._body.damping = 0.9
-        self.renderer = self._renderers[self.form]
+        if self.render_form == self.HUMAN_FORM:
+            self.render_form = self.WOLF_FORM
+        elif self.render_form == self.HUMAN_FORM_BACK:
+            self.render_form = self.WOLF_FORM_BACK
+        else:
+            self.render_form = self.WOLF_FORM
+        self.renderer = self._renderers[self.render_form]
 
     def go_human(self):
@@ -110 +147 @@
         self.impulse_factor = 500
         self._body.damping = 0.8
-        self.renderer = self._renderers[self.form]
+        if self.render_form == self.WOLF_FORM:
+            self.render_form = self.HUMAN_FORM
+        elif self.render_form == self.WOLF_FORM_BACK:
+            self.render_form = self.HUMAN_FORM_BACK
+        else:
+            self.render_form = self.HUMAN_FORM
+        self.renderer = self._renderers[self.render_form]
+
+    def _switch_to_back(self):
+        if self.render_form == self.HUMAN_FORM:
+            self.render_form = self.HUMAN_FORM_BACK
+        elif self.render_form == self.WOLF_FORM:
+            self.render_form = self.WOLF_FORM_BACK
+        self.renderer = self._renderers[self.render_form]
+
+    def _switch_to_front(self):
+        if self.render_form == self.HUMAN_FORM_BACK:
+            self.render_form = self.HUMAN_FORM
+        elif self.render_form == self.WOLF_FORM_BACK:
+            self.render_form = self.WOLF_FORM
+        self.renderer = self._renderers[self.render_form]
 
     def set_direction(self, dx, dy):
@@ -116 +173 @@
             self.renderer.stop()
             return
+        old_angle = self.angle
         self.angle = pymunk.Vec2d((dx, dy)).angle
+        # If we've gone from quadrants 2 & 3 to 1 & 4 (or vice versa)
+        # switch between front & back views
+        if self.angle != math.pi:
+            # == math.pi is going straight left, which can't
+            # trigger a front/back swap and simplifies these checks
+            if self.angle > 0 and old_angle != self.angle:
+                self._switch_to_back()
+            elif self.angle < 0 and old_angle != self.angle:
+                self._switch_to_front()
         self._body.apply_impulse(
             (dx * self.impulse_factor, dy * self.impulse_factor))