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| <!DOCTYPE html> | ||
| <html> | ||
| <head> | ||
| <meta charset="utf-8"> | ||
| <meta name="viewport" content="width=device-width, initial-scale=1"> | ||
| <meta name="description" content="Making character physics wrapper, moving character, control number of jump, etc."> | ||
| <meta property="og:url" content="https://bge.ninja"> | ||
| <meta property="og:type" content="website"> | ||
| <meta property="og:title" content="BGENinja"> | ||
| <meta property="og:description" content="Making character physics wrapper, moving character, control number of jump, etc."> | ||
| <!-- <meta property="og:image" content="https://rangeengine.tech//img/ogp_splash.jpg"> --> | ||
| <meta name="twitter:card" content="summary_large_image"> | ||
| <meta property="twitter:domain" content="bge.ninja"> | ||
| <meta property="twitter:url" content="https://bge.ninja"> | ||
| <meta name="twitter:title" content="BGENinja"> | ||
| <meta name="twitter:description" content="Making character physics wrapper, moving character, control number of jump, etc."> | ||
| <!-- <meta name="twitter:image" content="https://rangeengine.tech//img/ogp_splash.jpg"> --> | ||
| <title>Character Control</title> | ||
| </head> | ||
| <body> | ||
| <h1>Character Control</h1> | ||
| <p> | ||
| We will make character physics controller which is | ||
| <span class="mono">KX_CharacterWrapper</span> type. | ||
| This allows us to check if the character has landed, | ||
| control number of jumps it can do, etc. | ||
| </p> | ||
| <h3>Setup</h3> | ||
| <p> | ||
| Select the cube, change it's physics type to Character, drag it up on the | ||
| Z axis to around 3-4.<br> | ||
| </p> | ||
| <h3>Logic Bricks</h5> | ||
| <p> | ||
| To setup the logic bricks, we need to know how the player will | ||
| be controller. My guess is something like this. | ||
| </p> | ||
| <figure> | ||
| <img src="https://i.postimg.cc/rmVKTrx2/image.png" loading="lazy" alt="logic bricks setup"> | ||
| <figcaption>Logic Bricks Setup</figcaption> | ||
| </figure> | ||
| <p> | ||
| The keyboard keys will be controlled with python. | ||
| </p> | ||
| <h3>Coding</h3> | ||
| <p> | ||
| Import the game engine module, define our python controller and owner. | ||
| </p> | ||
| <pre><code>try: | ||
| import Range | ||
| except: | ||
| import bge as Range | ||
|
|
||
| cont = Range.logic.getCurrentController() | ||
| own = cont.owner | ||
|
|
||
| def move(): | ||
| pass</code></pre> | ||
| <p> | ||
| The <span class="mono">move</span> function will run in a loop. | ||
| Next we need to move our character when the keyboard sensors is triggered. | ||
| </p> | ||
| <pre><code>def move(): | ||
| keyboard = cont.sensors["Keyboard"] # Get sensor as "keyboard" | ||
| y = 0 # Forward / Backward | ||
| z = 0 # Turn | ||
| jump = (0,0,0) # Jump Direction | ||
| if keyboard.positive: # If keyboard is triggered | ||
| if 45 in keyboard.inputs: # W key | ||
| y = 1/8 | ||
| if 23 in keyboard.inputs: # A key | ||
| z = 1/8 | ||
| if 41 in keyboard.inputs: # S key | ||
| y = -1/8 | ||
| if 26 in keyboard.inputs: # D key | ||
| z = -1/8 | ||
| if 8 in keyboard.inputs: # SPACE key | ||
| pass # Do nothing, will be implemented later | ||
| else: # Reset everything | ||
| x = 0 | ||
| z = 0 | ||
| jump = 0</code></pre> | ||
| <p> | ||
| Here, we've setup the movement when the keyboard is pressed. | ||
| Now we need to get the character ID. | ||
| </p> | ||
| <div class="note"> | ||
| <p class="what"></p> | ||
| <p> | ||
| Getting the character ID is mandatory or the character you control becomes | ||
| <span class="mono">KX_GameObject</span>. | ||
| </p> | ||
| </div> | ||
| <pre class="language-python"><code>player = Range.constraints.getCharacter(own)</code></pre> | ||
| <p> | ||
| We got our character ID, now we need to implement the player movement. | ||
| </p> | ||
| <pre class="language-python"><code>def move(): | ||
| keyboard = cont.sensors["Keyboard"] | ||
| y = 0 | ||
| z = 0 | ||
| jump = (0,0,0) | ||
| if keyboard.positive: | ||
| if 45 in keyboard.inputs: | ||
| y = 1/8 | ||
| if 23 in keyboard.inputs: | ||
| z = 1/8 | ||
| if 41 in keyboard.inputs: | ||
| y = -1/8 | ||
| if 26 in keyboard.inputs: | ||
| z = -1/8 | ||
| if 8 in keyboard.inputs: | ||
| player.jump() # The proper jump | ||
| else: | ||
| x = 0 | ||
| z = 0 | ||
| jump = 0 | ||
|
|
||
| player.walkDirection = (0,y,0) # Movement but in world coordinates | ||
| own.applyRotation((0,0,z), True) # Turn left and right</code></pre> | ||
| <p> | ||
| If you run the script, the character moves in world coordinates, | ||
| to solve this we multiply <span class="mono">worldOrientation</span> | ||
| that returns us Matrix with the tuple <span class="mono">(0,y,0)</span> | ||
| which will be converted into a Vector with <b>mathutils</b> module. | ||
| </p> | ||
| <pre class="language-python"><code>player.walkDirection = own.worldOrientation * Vector((0,y,0))</code></pre> | ||
| <p> | ||
| And we create a property that returns us the | ||
| <span class="mono">KX_CharacterWrapper.onGround</span> as True or False. | ||
| </p> | ||
| <pre><code>own["landed"] = player.onGround</code></pre> | ||
| <p> | ||
| And the final code looks like this. | ||
| </p> | ||
| <pre id="full-src"><code>try: | ||
| import Range | ||
| except: | ||
| import bge as Range | ||
|
|
||
| from mathutils import Vector | ||
|
|
||
| cont = Range.logic.getCurrentController() | ||
| own = cont.owner | ||
| player = Range.constraints.getCharacter(own) | ||
|
|
||
| def move(): | ||
| keyboard = cont.sensors["Keyboard"] | ||
| y = 0 | ||
| z = 0 | ||
| jump = (0,0,0) | ||
| if keyboard.positive: | ||
| if 45 in keyboard.inputs: | ||
| y = 1/8 | ||
| if 23 in keyboard.inputs: | ||
| z = 1/8 | ||
| if 41 in keyboard.inputs: | ||
| y = -1/8 | ||
| if 26 in keyboard.inputs: | ||
| z = -1/8 | ||
| if 8 in keyboard.inputs: | ||
| player.jump() | ||
| else: | ||
| x = 0 | ||
| z = 0 | ||
| jump = 0 | ||
|
|
||
| player.walkDirection = own.worldOrientation * Vector((0,y,0)) | ||
| own.applyRotation((0,0,z), True) | ||
| own["landed"] = player.onGround</code></pre> | ||
| <p> | ||
| <a href="" target="_blank">Download the project file.</a> | ||
| </p> | ||
| <!-- SCRIPTS --> | ||
| <script src="../../code/highlight.min.js"></script> | ||
| <script>hljs.highlightAll();</script> | ||
| <script type="text/javascript" src="../../code/syntax.js"></script> | ||
| </body> | ||
| </html> |
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