reflower/main/scenes/scene_car.c

#include "scenes.h"
#include "liquid.h"
#include <malloc.h>
#include "graphics/nokia.h"
#include "graphics/drawing.h"

struct CarScene {
    struct Scene base;
    int32_t pos;
};

static struct SceneEvent Car_onInput(struct CarScene *self, struct InputEvent event) {
    switch (event.kind) {
        case InputEventKind_Wheel:
            self->pos += event.wheel.delta;
            if (self->pos < 0) self->pos = 0;
            if (self->pos > LCD_WIDTH-21) self->pos = LCD_WIDTH-21;
            return SceneEvent_Repaint();

        case InputEventKind_Button:
            if (event.button.state) {
                return SceneEvent_Close(0, NULL);
            }
            // fall through
        default:
            return SceneEvent_None();
    }
}

static void Car_paint(struct CarScene *self)
{
    LCD_clearDisplay(0);
    LCD_setRect(self->pos, LCD_HEIGHT/2-10, self->pos+20,LCD_HEIGHT/2+10,0,1);
    LCD_updateDisplay();
}

struct Scene *NewScene_Car(void) {
    struct CarScene *scene = calloc(1, sizeof(struct CarScene));
    if (!scene) return NULL;

    scene->base.onInput = (Scene_onInput_t) Car_onInput;
    scene->base.paint = (Scene_paint_t) Car_paint;
    return (struct Scene *) scene;
}