ufo/src/ufo.c
| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * SPDX-License-Identifier: MIT | ||
| 3 | * | ||
| 4 | * Copyright (c) 2026 Manuel Hernández Méndez | ||
| 5 | * | ||
| 6 | * Authors: | ||
| 7 | * Manuel Hernández Méndez <maherme.dev@gmail.com> | ||
| 8 | */ | ||
| 9 | |||
| 10 | #include "ufo.h" | ||
| 11 | #include "graph.h" | ||
| 12 | #include "graphGlutCallbacks.h" | ||
| 13 | #include "physic.h" | ||
| 14 | #include "utils.h" | ||
| 15 | #include <stdbool.h> | ||
| 16 | #include <stdlib.h> | ||
| 17 | |||
| 18 | #define UFO_WIDTH 16 | ||
| 19 | #define UFO_HEIGHT 8 | ||
| 20 | |||
| 21 | struct ufo_instance_t | ||
| 22 | { | ||
| 23 | sprite_t sprite; | ||
| 24 | direction_t direction; | ||
| 25 | long long time_to_appear; | ||
| 26 | bool alive; | ||
| 27 | }; | ||
| 28 | |||
| 29 | static struct ufo_instance_t ufo; | ||
| 30 | |||
| 31 | static const char ufoImage[UFO_HEIGHT][UFO_WIDTH][NUM_RGBA_CHANNELS] = { | ||
| 32 | {B, B, B, B, B, B, B, B, B, B, B, B, B, B, B, B}, | ||
| 33 | {B, B, B, B, R, R, R, R, R, R, R, R, B, B, B, B}, | ||
| 34 | {B, B, B, R, R, R, R, R, R, R, R, R, R, B, B, B}, | ||
| 35 | {B, B, B, R, B, R, B, R, R, B, R, B, R, B, B, B}, | ||
| 36 | {B, R, R, R, R, R, R, R, R, R, R, R, R, R, R, B}, | ||
| 37 | {R, R, R, R, R, R, R, R, R, R, R, R, R, R, R, R}, | ||
| 38 | {B, B, B, B, B, R, R, R, R, R, R, B, B, B, B, B}, | ||
| 39 | {B, B, B, B, B, B, B, R, R, B, B, B, B, B, B, B}, | ||
| 40 | }; | ||
| 41 | |||
| 42 | static void | ||
| 43 | 2 | calculateDirection(ufo_t ufo) | |
| 44 | { | ||
| 45 | 2 | double random = (double)rand() / RAND_MAX; | |
| 46 | 2 | int random_direction = (random < 0.5) ? 0 : 1; | |
| 47 |
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2 | if (random_direction) |
| 48 | { | ||
| 49 | 1 | ufo->direction = RIGHT; | |
| 50 | } | ||
| 51 | else | ||
| 52 | { | ||
| 53 | 1 | ufo->direction = LEFT; | |
| 54 | } | ||
| 55 | 2 | } | |
| 56 | |||
| 57 | static void | ||
| 58 | 2 | calculateStartingCoord(ufo_t ufo) | |
| 59 | { | ||
| 60 |
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2 | if (ufo->direction == RIGHT) |
| 61 | { | ||
| 62 | 1 | ufo->sprite.x = -ufo->sprite.width; | |
| 63 | } | ||
| 64 | else | ||
| 65 | { | ||
| 66 | 1 | ufo->sprite.x = GAME_WIDTH; | |
| 67 | } | ||
| 68 | |||
| 69 | 2 | ufo->sprite.y = GAME_HEIGHT - 16; | |
| 70 | 2 | } | |
| 71 | |||
| 72 | ufo_t | ||
| 73 | 2 | ufoCreate(void) | |
| 74 | { | ||
| 75 | 2 | ufo_t inst = &ufo; | |
| 76 | 2 | calculateDirection(inst); | |
| 77 | 2 | inst->sprite.width = UFO_WIDTH; | |
| 78 | 2 | inst->sprite.height = UFO_HEIGHT; | |
| 79 | 2 | inst->sprite.image = (const char *)ufoImage; | |
| 80 | 2 | inst->sprite.pixels_to_move = 1; | |
| 81 | 2 | inst->sprite.time_to_move = 1000 / 60 * NS_PER_MS; | |
| 82 | 2 | inst->time_to_appear = 5 * NS_PER_S; | |
| 83 | 2 | calculateStartingCoord(inst); | |
| 84 | 2 | inst->sprite.max_movement.right = GAME_WIDTH + inst->sprite.width + 1; | |
| 85 | 2 | inst->sprite.max_movement.left = -(inst->sprite.width + 1); | |
| 86 | 2 | inst->sprite.layer = LAYER_GAME_OBJECTS; | |
| 87 | 2 | inst->sprite.visible = true; | |
| 88 | 2 | graphUpdateTimeSprite(&inst->sprite); | |
| 89 | 2 | graphRegisterPrint(&inst->sprite); | |
| 90 | 2 | inst->alive = true; | |
| 91 | |||
| 92 | 2 | return inst; | |
| 93 | } | ||
| 94 | |||
| 95 | void | ||
| 96 | 2 | ufoDestroy(ufo_t ufo) | |
| 97 | { | ||
| 98 |
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2 | if (!ufo) |
| 99 | { | ||
| 100 | 1 | return; | |
| 101 | } | ||
| 102 | |||
| 103 | 1 | sprite_t *ufo_sprite = graphGetSprite((base_t *)ufo); | |
| 104 | 1 | graphUnregisterPrint(ufo_sprite); | |
| 105 | 1 | ufo->alive = false; | |
| 106 | } | ||
| 107 | |||
| 108 | bool | ||
| 109 | 4 | ufoAlive(ufo_t ufo) | |
| 110 | { | ||
| 111 |
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4 | return ufo && ufo->alive; |
| 112 | } | ||
| 113 | |||
| 114 | direction_t | ||
| 115 | 3 | ufoGetDirection(const ufo_t ufo) | |
| 116 | { | ||
| 117 |
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3 | if (!ufo) |
| 118 | { | ||
| 119 | 1 | return INVALID_DIR; | |
| 120 | } | ||
| 121 | 2 | return ufo->direction; | |
| 122 | } | ||
| 123 | |||
| 124 | bool | ||
| 125 | 6 | ufoCheckForMoving(ufo_t ufo) | |
| 126 | { | ||
| 127 |
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6 | if (!ufo || !ufo->alive) |
| 128 | { | ||
| 129 | 2 | return false; | |
| 130 | } | ||
| 131 | |||
| 132 |
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4 | if (ufo->time_to_appear == 0) |
| 133 | { | ||
| 134 | 1 | return true; | |
| 135 | } | ||
| 136 | |||
| 137 |
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3 | if (!utilsCheckTimeout(ufo->sprite.last_update, ufo->time_to_appear)) |
| 138 | { | ||
| 139 | 1 | return false; | |
| 140 | } | ||
| 141 | else | ||
| 142 | { | ||
| 143 | 2 | ufo->time_to_appear = 0; | |
| 144 | } | ||
| 145 | |||
| 146 | 2 | return true; | |
| 147 | } | ||
| 148 | |||
| 149 | #ifdef UNIT_TESTING | ||
| 150 | #include <string.h> | ||
| 151 | |||
| 152 | ufo_t | ||
| 153 | 7 | helperUT_ufoGetInstance(void) | |
| 154 | { | ||
| 155 | 7 | ufo_t inst = &ufo; | |
| 156 | 7 | memset(inst, 0, sizeof(*inst)); | |
| 157 | |||
| 158 | 7 | inst->alive = true; | |
| 159 | |||
| 160 | 7 | return inst; | |
| 161 | } | ||
| 162 | |||
| 163 | void | ||
| 164 | 2 | helperUT_ufoSetAlive(ufo_t ufo, bool alive) | |
| 165 | { | ||
| 166 | 2 | ufo->alive = alive; | |
| 167 | 2 | } | |
| 168 | |||
| 169 | void | ||
| 170 | 3 | helperUT_ufoSetTimeToAppear(ufo_t ufo, long long time) | |
| 171 | { | ||
| 172 | 3 | ufo->time_to_appear = time; | |
| 173 | 3 | } | |
| 174 | #endif /* UNIT_TESTING */ | ||
| 175 |