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gamemaker player movement script
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| /// Player movement script | |
| /// arg0 = velocity | |
| /// should be called in a step | |
| { | |
| // Local vars & args | |
| velocity = argument[0]; | |
| xVel = 0; | |
| yVel = 0; | |
| // check keyboard events | |
| isUp = keyboard_check(vk_up); | |
| isDown = keyboard_check(vk_down); | |
| isRight = keyboard_check(vk_right); | |
| isLeft = keyboard_check(vk_left); | |
| // Set x/y velocity based on direction of keys | |
| if (isUp) yVel = -1; | |
| if (isDown) yVel = 1; | |
| if (isRight) xVel = 1; | |
| if (isLeft) xVel = -1; | |
| // proposed new position | |
| newX = x + xVel * velocity; | |
| newY = y + yVel * velocity; | |
| // update position if free | |
| if (place_free(newX, newY)) { | |
| x = newX; | |
| y = newY; | |
| } else if (place_free(newX, y)) { | |
| x = newX; // update the x, if the y isn't free | |
| } else if (place_free(x, newY)) { | |
| y = newY; // update the y, if the x isn't free | |
| } else { | |
| // nothing free. | |
| } | |
| } |
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