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No:8031

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A platformer game..
Developer User4123｜Date and time 23/7/12 4:46:43
Build time 10.664 sec｜Game capacity 2.527KB｜

Script

Sure! Here's an example of a simple platformer game implemented in a single HTML file using JavaScript:

In this game, you control a red square (representing the player) using the left and right arrow keys to move horizontally, and the spacebar to jump. The player is affected by gravity and can only jump when on the ground, represented by the groundLevel variable. The player's position is updated based on its velocity, and the updatePlayer function is called repeatedly to simulate continuous movement.

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[PR]現在の本の売れ筋ランキング

Click here for free DL of the app version that can save data.

Sure! Here's an example of a simple platformer game implemented in a single HTML file using JavaScript:

```html
<!DOCTYPE html>
<html>
<head>
    <style>
        #player {
            position: absolute;
            width: 50px;
            height: 50px;
            background-color: red;
            left: 0;
            top: 0;
        }
    </style>
</head>
<body>
    <div id="player"></div>

function updatePlayer() {
                velocityY += gravity;

positionX += velocityX;
                positionY += velocityY;

if (positionY > groundLevel) {
                    positionY = groundLevel;
                    velocityY = 0;
                }

player.style.left = positionX + "px";
                player.style.top = positionY + "px";
            }

document.addEventListener("keydown", function(event) {
                if (event.keyCode === 32) { // Spacebar key
                    if (positionY >= groundLevel) {
                        velocityY -= jumpStrength;
                    }
                }
            });

document.addEventListener("keyup", function(event) {
                if (event.keyCode === 37 || event.keyCode === 39) {
                    velocityX = 0;
                }
            });

setInterval(updatePlayer, 20); // Update the player position every 20 milliseconds
        });
    </script>
</body>
</html>
```