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Phun is a 2D game/simulator where you enter simple situations and are shown the results in a visual format. I will be showing how to make games using the laws of physics. BR BRNote on formatting: BRSub-window names are italicized.
Game 1: Racing
BRFirst we will make a monocycle. This lesson will teach students about gravity and inertia.
- Draw Hinges/Fixes when running
- Draw Inside Objects
The rest are relatively insignificant.
BRMake the monocycle! BRStart by drawing a circle with the circle tool near the ground. BRDraw a box using the box tool. Start below the bottom of the circle and to the right of the center of the circle and go to the left of the center of the circle and a little above the center of the circle. The box should hang down from the center and protrude.
BRMake the motor on the monocycle. Right-click on the circle, go to Geometry settings>Add center hinge. Right click on the hinge and go to Hinges> BRCheck the following: BRMotor BRControl with arrow keys
BRPress space to test it. BR BRWoah! What happened? It's gone! BRActually, it isn't. It just flew up so fast that you couldn't see it. Why? It the pendulum was hanging down into the ground. The fastest way to remove that was to fling it straight up. (To see the flung moncycle, right-click anywhere on the screen where there isn't any objects. Use the pan and/or zoom to find it.) BR(If the pendulum hangs inside the circle, that's OK. Just follow these instructions anyway to learn about collisions in Phun.) BR BRTo go back to the editing screen press Ctrl-Z or click Undo Sim Start in the Control window. BR(If you Panned/Zoomed before, Pan/Zoom back.)
BRPress space to start. BR BRPress the left arrow key. The pendulum should move left, followed shortly by the cycle. BRPress the right arrow key. The pendulum should move right, followed shortly by the cycle. BR BRIsn't very interesting though, is it? Let's add an AI player. (Actually, the intelligence part of artificial intelligence is kind of a stretch.)
BRMake the AI player. BR BRSelect the brush tool, and draw a closed shape around the mono cycle. It should be flashing now. Go to the Options window and un-check Draw inside objects. Hold down Control and drag the monocycle until the two monocycles do not intersect. Right click on the hinge of the AI player. Go to Hinges... > BRUncheck Controlled by arrow keys.Monocycle-RPM-change.png BRRight-Click your monocycle body. Go to Collision Menu... > BROnly Check:
- Collision group A
Right-Click the AI's monocycle body. Go to Collision Menu... > BROnly Check:
- Collision group B
You now have a controllable monocycle plus one to race against. BR BROptional: Make things more interesting by setting the speed of both hinges to 45 rpm instead of 15. [attachment:Monocycle-RPM-change.png]
Game 1 questions